Dissertations / Theses on the topic 'Faktori'
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Mladen, Subotić. "Faktori razvoja preduzetničkih potencijala studenata." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=106897&source=NDLTD&language=en.
Full textThe main objective of this research is to examine the factors that influencethe development of student entrepreneurial potentials. The obtained resultsare important for understanding the theoretical aspect of the concept ofentrepreneurial potential, its structure and factors that influence thedevelopment of individual dimensions, as well as for opening up significantpractical possibilities for better and more efficient planning of educationalactivities and organizing incentive programs for the development ofentrepreneurship. This research of students' entrepreneurial potential pointsto the possibility of their development and contributes to the development ofentrepreneurship in our country.
Kulhua, J. (Jussi). "Faktori-indeksien käyttö riskiperusteisessa salkunhoidossa." Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201606072447.
Full textDragan, Živančev. "Analiza uticaja genetskih, mikroklimatskih i ekoloških faktora na sastav glutena i tehnološki kvalitet sorti pšenice." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2014. http://dx.doi.org/10.2298/NS20131226ZIVANCEV.
Full textIn the Ph. D. Thesis was analyzed the impact of genetic, environmental andmicroclimatic factors that prevailed during the three production years on glutencomposition and technological quality of 16 wheat varieties that are present in theassortment of Serbia. Also, all wheat varieties were produced at the same location. Thetraditional and sofisticated methods are used, electrophoretic analysis of glutenin andgliadin subunits was performed, the content of free-SH and-NH groups are determined,baking test and objective quality of the obtained bread are evaluated to examine thetechnological quality of wheat and composition of gluten. The gained results are usedto established a database for statistical analysis. Due to the numerous data and the factthat the properties measured in different number of repetitions which are qualifed bysample amount, the usual number of repetitions, reproductivity method PCA wasperformed toward the selection of the most important properties. After that was doneANOVA in the respective to climatic factors that charatcterized the production year,the genetic factors that are caused by genetic similarity of the exmined cultivars ofwheat and environmental factors that are reflected through the different levels ofinseparable impurities, which are defined by frekvency analysis. Specific objectives ofthe study enable to:–determine how microclimatic conditions that prevailed in the three productionyears, especially the rainy and instable weather that prevailed from wheat floweringuntil full maturity of wheat kernel influence on the composition of gluten and wheatprocessing quality tested,–determine how environmental factors that are defined by the presence of threedifferent levels of germinate kernels, kernels damaged by wheat bug, kernels infestedby Fussarium molds and kernels infested by Alternaria alternata molds affect on thecomposition of gluten and technological quality of wheat cultivar and–determine how genetic factors which are defined through differences in HMW-GSon the Glu A1 and Glu D1 locus that cultivars contain or do not contain and identicalHMW-GS composition which examined cultivars possess affect on the glutencomposition and technological quality of tested wheat varieties.The achieved results represent a complex analysis of the impact of various factors onthe composition of gluten and technological quality of wheat, which included aenormous database of properites and closely determine how individual microclimatic,genetic and environmental factors influence on the gluten composition andtechnological quality of wheat.
Sanja, Đukić. "Agroekonomski faktori održivog razvoja regiona Fruške gore." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=94873&source=NDLTD&language=en.
Full textThis paper analyses agrieconomics factors of sustainable development in the case of region of Fruška gora. The need for research on these factors comes from the fact that agriculture is the most common activity in the region, specifically in its protective zone. An identifying and quantifying agrieconomics factor through relevant indicators of sustainable agriculture has been extended to an aspect of rural development. The paper gives an overview of the actual literature, and a number of methodologies for sustainable development, sustainable agriculture and rural development. Different theoretical approaches of the regional economy and the assessment of regional competitiveness of rural areas are presented, in order a comprehensive analysis of the observed issues. The characteristics of the area in the case of Fruška gora are presented (potential for sustainable development, profiles of municipalities/cities which are located in the scope of this region, as well as the sustainable orientation for all business activity). Based on available data, was analysed the influence of the certain agrieconomics factors of sustainable development of the region of Fruška gora, and assessment of their impact in the following period, together with other economic indicators of the Republic of Serbia and AP Vojvodina. In proving or disproving the hypothesis, except the identification agrieconomics factors of sustainable development, the research by a survey questionnaire of all stakeholders in the region of Fruška gora was used. Also, the ideas and suggestions for future research are expressed and a model that would optimally valorised all potentials of Fruška gora is proposed, primarily those that are aimed at improving the agricultural, rural and sustainable development.
Ana, Jovičić. "Organizacioni faktori kao prediktori inovativnosti u hotelijerstvu Srbije." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=95390&source=NDLTD&language=en.
Full textHotel industry is an important component of tourism development in Serbia. The scope of the doctoral dissertation is to examine the current situation and the level of innovativeness in hotels in Serbia. In today's business environment the ability of a hotel to provide innovative solutions to its guests is the basis for creating and maintaining competitive advantage. The research of the current state of innovativeness is one of the key tools for acquiring information which business segments need to be improved in order to ensure optimal quality of a hotel product and achieve better business results.The aim of the research is to determine the effect of the organizational factors such astransformational leadership, transactional leadership, organizational climate dimensions and organizational learning dimensions on innovations in hotels, as wellas to determine relations between these variables. In addition, the aim of thesis is to determine the effect of innovation on the creation of value for hotel guests.The research methodology involved desk and field research. The sample consisted of 512 respondents employed in 57 hotels of the first, second and third category in Serbia.The results showed that organizational factors such as transformational and transactional leadership, organizational climate (the Cohesion, Support for innovation, Trust and Recognition dimensions) and organizational learning affect hotel innovativeness, as well as that innovations (especially in terms of innovations related to customers, technology innovation, process innovation and management innovation) directly contribute to creating value for the hotel guests. The results of this study are new scientific information and may be a significant practical guide for hotel management, hotel owners, employees, professionals, teaching staff in the tourism and hospitality industry, scientists and researchers and other stakeholders. Scientifically relevant results can be used in making future decisions, measures and standards related to human resources management, removing obstacles, the development and promotion of innovative activities and defining further directions of development of the hotel product.
Đorđe, Ćelić. "Ključni faktori uspešnosti malih i srednjih preduzeća u uslovima tranzicije." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101321&source=NDLTD&language=en.
Full textThe subject of this work is the environment of the knowledge economy andthe business of small and medium enterprises in this environment. Theproblem of this research is to analyze the factors affecting the performanceof small and medium-sized enterprises. The aim of the research is to identifythe key success factors of small and medium-sized enterprises in Serbia inorder to define measures to increase the competitiveness of the sector anddeveloped a model of management of small and medium enterprises in theknowledge economy based on the key factors of success. The value of theresults of this study arises from the research objectives within the frameworkof this thesis, which in a broader sense means providing information to thescientific and professional community that can contribute to the furtherdevelopment of the SME sector and better management of SMEs on thebasis of the key success factors
Andrea, Božić. "Faktori rizika za pojavu lumbalnog bola kod medicinskih sestara - tehničara." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104732&source=NDLTD&language=en.
Full textOne of the today’s most frequent health problems is the low back pain. Nursing is stressful and hard physical job which belongs to the group of high-risk jobs that could cause low back pain and therefore medical nurses/technicians represent the vulnerable population. Determination of prevalence, risk factors and prevention of the low back pain were the main goals of this research. The research in the form of cross-sectional study was conducted with nurses filling in the surveys within five medical institutions in Vojvodina. The modified Nordic questionnaire was used for the surveys. The results show very high prevalence of the low back pain, cca 94%, among medical nurses. Most of the respondents were females, who finished high school education, at average age of 38 years. The study showed that there is a statistically significant coherence between low back pain, ageing and working experience as a nurse. There is also a statistically significant coherence between the low back pain and the increase of the BMI. The most common nursing jobs that respondents with the low back pain do are: positioning of patients, lifting patients, dressing patients in bed and giving therapy. The low back pain with the respondents who do the nursing just by themselves is statistically significantly more present then with the respondents who do the nursing with help. Nurses who suffer more stress at their workplaces have a significantly higher risk to develop low back pain. Working 12 hour shifts (alternately day and night shifts), overtime work, more then 25 kg weight lifting and number of patients for nursing per nurse during working hours have no significant correlation with the low back pain occurrence. About three quarters of the respondents had no absence from work caused by the low back pain. Only 8% of the respondents changed their workplace because of the low back pain and have regular health checks. To prevent the low back pain it is necessary to emphasize the physical reduction of the load on the lower back and manual handling of loads. The frequent low back pain with the nurses could be reduced with the appropriate ergonomic access, better work organization, a supportive atmosphere at work and the willingness of responsible authorities to express greater concern about the employees.
Arsen, Uvelin. "Prediktivni faktori nastanka akutne renalne insuficijencije na odeljenju intenzivnog lečenja." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=90932&source=NDLTD&language=en.
Full textIntroduction: The incidence of acute renal insufficiency (acute kidney injury) in intensive care unit is between 36 and 66 %. Acute kidney injury is responsible for higher mortality, longer hospitalization and higher costs. Earlier recognition of acute kidney injury predictive factors could have important impact on right timing of therapeutic measures and lower mortality in critically ill patients. Aims: investigate the incidence of acute kidney injury during 2011. in patients who are hospitalized at Department of reanimation of Emergency centre, Clinical centre of Vojvodina, incidence of acute kidney injury caused by sepsis in the same period and detect acute kidney injury occurrence predicitive factors Methodology: This retrospective-prospective observational study investigated 251 critically ill patients-study subjects who were treated at two intensive care departments in Clinical centre of Vojvodina during 2010, 2011 and first six months of 2012. Potential predictive factors were identified out of medical records (patient history, daily therapeutic lists, vital parameters and laboratory values lists); the occurrence of acute kidney injury was noted according to RIFLE criteria. IBM SPSS version 20 was used for statistical analysis, standard statystical test were applied. The results were presented in tables and graphs, statystical significance was set at p value of less than 0,05. Multivariate logistic regression model was used for potential predictive factors. Statystically important factors were identified and their best sensitivity and specificity cut-off values were found using ROC curve analysis.; These cut-off values were used for creating a scoring system that determines the risk for acute kidney injury occurrence. Results: The incidence of acute kidney injury at Department of reanimation, Clinical centre of Vojvodina in patients who were hospitalized at least 48 hours was 32 % during 2011. The cut off value of provoked hourly urine output during first hour after furosemide intravenous bolus of 0.165 ml/kg body weight/h/miligram of administered furosemide has the highest sensitivity (82.3 %) and specifity (67.5 %) in differentiation of patients who would develop acute kidney injury and those who would not. The final suggested model of scoring system with the role of acute kidney injury prediction after 24 hours of treatment contains the next variables: age higher than 53 years, APACHE II score higher than 16, avarage hourly urine output during first 6 hours after ICU admission less than 0,875 ml/kg BW/h, vasopressor medication administration, blood potassium concentration higher than 4,5 mmol/l, lactates higher than 2 mmol/l after 24 hours of treatment. Conclusion: The incidence of acute kidney injury at Department of reanimation of Emergency centre, Clinical centre of Vojvodina is similar to world literature references. Critically ill patients who are more likely to develop acute kidney injury are older, have higher APACHE II score values, lower avarage urine output in the first 6 hours after ICU admission, are administered vasopressor medication, have higher blood potassium and lactate concentration in the first 24 hours of their treatment.
Jelena, Đekić Malbaša. "Faktori rizika i javnozdravstveni značaj infekcije krvi izazvane multirezistentnim bakterijama Acinetobacter spp." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104676&source=NDLTD&language=en.
Full textAim: Establish the participation of Acinetobacter spp. isolates in the structure of positive hemocultures and the percentage range of resistance to antibiotics in the health institutions of secondary and tertiary level on the territory of AP of Vojvodina in the period from 2013 to 2015; determine which patients most commonly get BSI caused by MDRA; determine risk factors for the occurrence of healthcare-associated infection (HAI) of blood caused by MDRA and the impact of HAI of blood caused by these pathogens to the duration of hospitalization, and the treatment outcome of patients admitted to the health care institutions of secondary and tertiary levels in the AP of Vojvodina. Material and Methods: Data from the protocol of the microbiological laboratory of the Center for Microbiology, Institute of Public Health of Vojvodina were used for retrospective analysis of the frequency of isolates of Acinetobacter spp. in the structure of positive hemocultures and for monitoring the percentage isolates of Acinetobacter spp. resistant to the observed type of antibiotics in health institutions of secondary and tertiary levels in AP of Vojvodina in the period from January 1, 2013 to December 31, 2015. Determining the risk factor for the occurrence of BSI induced by MDRA was conducted as a prospective cohort study in intensive care units (ICU) in the health institutions in AP of Vojvodina in the period from January 1, 2013 to March 31, 2016. Group 1 (n=164), study group of the cohort study included the patients with HAI of blood induced by MDRA. Group 2 (n=328), control group of the cohort study consisted of ICU patients without isolates of Acinetobacter spp. in the hemoculture. Controls were included in the study only if the length of their stay in the ICU (duration of hospitalization until discharge) was the same or longer than the length of the stay of their study group counterparts until the isolation of MDRA from blood culture. Controls were matched with the cases of the study group in the ratio (1: 2) according to: age (+/- 5 years), type of ICU and time (the same calendar month in which positive hemoculture was isolated in the the study group pair). In order to determine the predisposing factors of lethal outcome (14-day lethality) of patients in the ICU with the BSI caused by MDRA, anamnestic study was conducted. Results: Participation of Acinetobacter spp. isolates in the structure of hemocultures of patients, aged 18 and older, hospitalized in medical institutions in AP of Vojvodina in the period from 2013 to 2015 amounted to 13.9%. Acinetobacter spp. primoisolates from the patients' hemoculture samples were in 96.1% (198/204) multi-drug resistant. Analysing the Acinetobacter spp. isolates resistance to the tested antibiotics, Cefepime was the only to prove to cause statistically significant decrease in the share of resistant isolates (from 98.5% in the year 2014 to 83.3% in 2015), (p=0.025). Isolates of Acinetobacter spp. are most frequently registered in patients hospitalized in ICU (71.1% (145/204)). Multivariate analyses separated independent predictors for the occurrence of blood infection caused by the MDRA: patient transfers from another ward/hospital, admission diagnoses of polytrauma and burns, previous colonization of the upper respiratory tract MDRA, the presence of two or more co-morbidity, previous use of mechanical ventilation, higher index of invasive procedures, previous use of Imidazole derivates and the previous use of four or more classes of antibiotics. Patients with BSI caused by MDRA stayed statistically much longer in the ICU (24.5±17.5) as compared to uninfected controls (19.7±12.6), (p=0.001) and significantly more likely to have the lethal outcome (51.2% (84/164)) compared to patients without bloodsteram infections caused by this micro-organism (25.0% (82/328) (p<0.0001). Using multivariate analysis, independent predictors of death of patients, were found to be: advanced age, admission diagnosis of acute respiratory insufficiency and the application of inadequate antibiotic therapy after the isolation of pathogens from the hemoculture. Conclusion: The frequency and the structure of the risk factors suggested that the reduction of the prevalence and lowering of lethality can be achieved by combined administration of measures that include the rational use of broad spectrum antibiotics in the empirical antimicrobial treatment and strict compliance with the procedures related to the use of invasive follow-ups.
Aleksandra, Lazukić. "Sistemski prediktivni faktori ishoda lečenja kod povređenih sa teškim traumatskim moždanim oštećenjem." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107381&source=NDLTD&language=en.
Full textIntroduction: Traumatic brain injury (TBI) is a global health problem that affects about 10 million people worldwide annually. Severe traumatic brain injury (STBI) account for 10% of all TBI and has high morbidity and unreliable recovery. Early recognition of systemic factors that affect the treatment outcome can have a significant impact on the timely initiation of therapeutic measures and the reduction of morbidity and mortality. The objective of the research: to identify systemic factors that have a significant impact on the treatment outcome of the STBI patients in the Intensive Care Unit (ICU) during the first day of hospitalization. Methodology: The study was conducted as a retrospective-prospective study that included 115 injured patients with STBI who were hospitalized in the ICU, Emergency Center (EC) of the Clinical Center of Vojvodina (CCV) in the period from 01.01.2014 to 1.10.2017. From the medical documentation, for each participant involved in the research, the following parameters within the first 24 hours after the admission were considered and analyzed: demographic and general characteristics of the participants of importance for research and systemic predictive factors (systolic and mean arterial pressure-SAP / MAP, glycemia, body temperature -TT, pH, partial pressure of oxygen-PaO2 and partial pressure of carbon dioxide-PaCO2) registered at five time points (0h, 6h, 12h,18h, 24h). All of the above data were observed and analyzed as predictors, ie, independent variables in relation to the dependent variable "treatment outcome" defined as the Glasgow Outcome Scale (GOS) after the transfer from the ICU to the Clinic of neurosurgery of the CCV and GOS after discharge from a Clinic of neurosurgery and "treatment course" defined by length of stay in ICU, or the total duration of hospitalization in CCV, as well as the release to the home or the appropriate rehabilitation center. Statistical analysis was performed using the IBM SPSS 23 statistical package. The data are presented in tables and graphs, and the statistical significance was determined at p <0.05. The collected data were processed with adequate statistical methods. Results: Systemic factors that had predictive value for the lethal outcome (GOS 1) in STBI during the first day of ICU stay were the use of vasopressors and glycemia. The use of vasopressors increases the likelihood of fatal outcome 4.7 times (OR= 0,214; 95%CI: 0,096-0,479; p<0,05) and glycemic values > 10 mmol/l increase the likelihood of fatal outcome on admission (OR=0,240, 95%CI: 0,087-0,662; p=0,05) and after 24 hours (OR=0,206, 95%CI: 0,037 – 0,929; p=0,05). With each increase in body temperature for one unit in the observed interval, the probability of a positive outcome increases (OR=2,118, 95%CI: 1,097 – 4,091;p<0,05) and glycemic values in the range 4-8 mmol/l increase the probability of a positive outcome 2.5 times. Systemic factors that predict the treatment outcome of the patients after their discharge from ICU are glycemia and body temperature. The blood sugar on admission in the ICU in the range from 6.9 to 7.4 mmol/l increases the opportunity of a better recovery (GOS 4-5 vs. GOS 2-3). Lower glycemic values at the next time points (6h, 12h, 18h) also increase the opportunity of a better recovery. If the body temperature in the 6th and 12th-hour postadmission is higher than 36.5° C, the greater opportunity for better neurological improvement when the patient is discharged from ICU, or from the Clinic of neurosurgery. Participants who had higher values of body temperature had a longer duration of hospitalization (OR 4.096; 95% CI; 0.709-7.483;p<0,05). The length of the stay in ICU, as well as the release to the home or the appropriate rehabilitation center, was not affected by any observed systemic factor. Conclusion: Systemic predictive flow factors and outcome of treatment factors with STBI use of vasopressors, glycemia and body temperature.
Dragan, Žuljević. "Klijentovo oĉekivanje ishoda psihološkog tretmana kao faktor psihološke promene." Phd thesis, Univerzitet u Novom Sadu, Filozofski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=99983&source=NDLTD&language=en.
Full textDecenijama unazad, klijentova oĉekivanja ishoda tretmana isticana su od strane teoretiĉara kontekstualnih psihoterapijskih modela kao jedan od kljuĉnih opštih faktora psihoterapijske promene. MeĊutim, rezultati dosadašnjih istraţivanja uloge ovog fenomena daju nekonzistentne rezultate jer se ovom konstruktu pristupa veoma raznovrsno. Pojedini istraţivaĉi istiĉu vaţnost poĉetnih pretretmanskih oĉekivanja ishoda tretmana, drugi ulogu promene oĉekivanja ishoda tretmana u postizanju ţeljene terapijske promene, dok treći istiĉu da se efekti oĉekivanja ishoda tretmana na ishod ostvaruju kako direktno tako i indirektno posredstvom promene klijentovih generalnih oĉekivanja.
Da bismo detaljnije istraţili ulogu klijentovih oĉekivanja ishoda tretmana u ostvarivanju psihoterapijske promene, sproveli smo longitudinalno korelaciono istraţivanje koje je za cilj imalo praćenje kako promene klijentovih oĉekivanja ishoda tretmana i generalnih oĉekivanja, tako i varijabli ishoda - opšte uznemirenosti, pozitivnog i negativnog afekta, te zadovoljstva ţivotom u funkciji protoka psihoterapijskog tretmana. Uzorak se sastojao od ispitanika koji pate od neke forme psihološkog problema subkliniĉkog intenziteta i samoinicijativno su se javili na tretman. Od 117 klijenata inicijelnog uzorka, 36 ispitanika proseĉne starosti 31 godinu i dominantno ţenskog pola (80.6%) privelo je tretman kraju i popunilo upitnike tri meseca nakon završetka tretmana. Tretman se sastojao od deset susreta sa psihoterapeutom po principu rutinske terapijske prakse Centra za ratnu traumu u Novom Sadu koji su sprovodili 19 psihoterapeuta edukovanih u okvirima razliĉitih psihoterapijskih orijentacija. Istraţivanje je obuhvatalo ukupno šest merenja - prvo prilikom dijagnostiĉkog susreta sa klijentom, drugo u proseku dve nedelje kasnije neposredno pre poĉetka prve tretmanske seanse, treće nakon treće seanse tretmana, ĉetvrto nakon šeste seanse, peto na kraju tretmana, te šesto merenje tri meseca nakon završetka tretmana. Primenjivani su sledeći instrumenti: Skala depresivnosti, anksioznosti i stresa (DASS 21) za procenu opšte uznemirenosti, Srpski inventar afekata baziran na Positive and Negative Affect Schedule - X (SIAB - PANAS) za procenu pozitivnog i negativnog afekta, Skala zadovoljstva ţivotom (SWLS) za procenu zadovoljstva ţivotom, Skala generalizovane self-efikasnosti (SGSE) i Skala liĉnog optimizma (PO) za procenu generalnih oĉekivanja, te Skala oĉekivanja promene (ACES) za procenu oĉekivanja ishoda tretmana. Serijom analiza kriva latentnog rasta te multilevel analiza mešovitih efekata dobijeni su rezultati koji sugerišu da dolazi do znaĉajne redukcije opšte uznemirenosti i negativnog afekta i to pre poĉetka tretmana i u njegovim ranim fazama, dok se zadovoljstvo ţivotom i pozitivni afekat znaĉajno ne menjaju u funkciji protoka tretmana. Promena pozitivnih i negativnih pokazatelja klijentovog stanja ne prate obrnuto proporcionalni obrazac. Oĉekivanja ishoda tretmana i liĉni optimizam linearno rastu nakon poĉetka tretmana, dok generalizovana self-efikasnost znaĉajno raste u završnoj fazi tretmana. Vrednosti praćenih varijabli stabilne su tri meseca nakon kraja tretmana. Pretretmanska oĉekivanja ishoda tretmana, kao i njihov porast tokom tretmana, znaĉajani su prediktori trendova svih praćenih varijabli. Porast liĉnog optimizma ima nedvosmislenu medijacionu ulogu u relacijama porasta oĉekivanja ishoda tretmana i promene u kriterijumima, dok porast generalizovane self-efikasnosti nema tu ulogu, te se više moţe smatrati ishodom nego medijatorom ishoda tretmana. Nasumiĉni efekti i rezidualne varijanse ovih modela sugerišu postojanje moderacionog efekta trećih varijabli, ali rezultati pokazuju da pretretmanska oĉekivanja ishoda tretmana takvu ulogu ne poseduju.
Rezultati snaţno idu u prilog kontekstualnim modelima u psihoterapiji i istiĉu da su klijentova pretretmanska oĉekivanja ishoda tretmana i promena tih oĉekivanja tokom tretmana neosporivo moćni opšti faktori promene koji u znaĉajnoj meri predviĊaju i objašnjavaju ishod psihoterapijskog tretmana.
Monika, Papić. "Prognostički faktori za povratak na posao kod bolesnika operisanih zbog lumbalne diskus hernije." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101084&source=NDLTD&language=en.
Full textReturn to work after lumbar discectomy is determinated by functional status, presence and degree of discomfort in the lumbosacral spine, the requirements in the workplace of patients and psychosocial factors that in the assessment of working capabilities require an individual approach. Groups of patients which don’t return to work after surgery could be identified by predictive model. The aim of this study is to define prognostic model to return to work patients after lumbar discectomy, as well as the identification major risk factors responsible for the poor outcome of operative treatment viewed through the prism of returning to work. This prospective study included a total of 200 patients, who underwent surgery for lumbar disc herniation on one level and were followed up in period of 12 months following surgery. The statistical analysis included 153 patients who fulfilled all selection criteria of the study subjects. After determining significance of the observed biological, professional and psychosocial risk factors for return to work, prognostic models were designed and evaluated based on all and selected attributes by tenfold cross-validation: decision tree (DT) model of multilayer perception (MLP) model and support vector (SVM). For the prediction of return to work best accuracy, specificity and sensitivity for selected attributes, is achieved by supporting vector model (SVM). The decision tree model (DT) provides the best intuitive and practical value for predicting return to work. By identifying the most important risk factors for adverse outcome for return to work it is made possible for preventive actions, to reduce the number of patients with reduced work ability and disability.
Danica, Sazdanić-Velikić. "Prognostički faktori za preživljavanje kod gerijatrijskih bolesnika sa uznapredovalim stadijumom nemikrocelularnog karcinoma bronha." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101147&source=NDLTD&language=en.
Full textINTRODUCTION: Nowadays life expectancy is prolonged due to modern diagnostic and therapy achievements, as well as promotion of preventive measurements. Aging of population is a phenomenon in the whole world. Increasing number of elderly population is accompanied with the increased number of diagnosed cancer in this age group, because the aging themselves is a risk factor for development of cancer. The appearance of cancer rapidly rises from the age of fifty with the peak at the age of eighty. 58% of cancer diagnoses are in the people older than sixty-five years and 30% in people older than seventy years. The age is not contraindication for chemotherapy treatment in older patient with cancer. The aging is associated with disturbed pharmacodynamics and pharmacokinetics of antitumor drugs and increased susceptibility of normal tissue for toxic complications, therefore clinical decision for introducing chemotherapy is very complex and requires good assessment and proper selection of the patients for this treatment. MATERIAL AND METHODS: This doctoral thesis includes results of partly retrospective and partly prospective observational research conducted in the period 01.01.2011. until 31.12.2013. at the Institute for pulmonary diseases of Vojvodina in Sremska Kamenica, which includes 152 lung cancer patients 65 and more years old with diagnosed non-small cell lung cancer in advanced stage treated with combined platinum based chemotherapy regimen. These prognostic factors are included: age of patients (group <75 years, group ≥75 years old), sex, smoking cessation (smoker, former smoker, non smoker), alcohol consuming habit, performance status (according to the ECOG-Eastern Cooperative Oncology Group scale) in the moment of confirmed diagnosis, pathohistological type of tumor (adenocarcinoma, squamous cell carcinoma, other), stage of disease (IIIb, IV), tumor size (<6cm and ≥6cm), TNM status according tumor classification (7th revision), blood count parameters (leucocyte, hemoglobin level, thrombocyte), biochemical parameters (lactate-dehydrogenase level (LDH), alkaline phosphatase level, aspartate aminotransferase level (AST), alanine aminotransferase level (ALT), potassium level, sodium level, bilirubin level) on the start of the chemotherapy, comorbidities at the moment of diagnosis (number of comorbid conditions, Charlson index), symptoms of the disease (cough, hemoptysis, dyspnea, chest pain, hoarseness, swallowing difficulties, caval venae compression symptoms, bone pain, central nervous symptoms, increased body temperature), weight loss (˃ 5% in the previous 6 months), body mass index (<18,5kg/m² underweight 18,5-24,9kg/m² normal weight, 25-29,9kg/m² overweight , ˃30kg/m² obese). All potential prognostic factors were evaluated with univariante analysis, and after that all factors with confirmed significance were analysed with multivariante logistic regression, in order to identify independent predictors for 2-year survival. Binary logistic regression analysis was applied for identifying independent predictors for 2-years survival and those variables were analysed : age <75 years, smoking cessation, pathohistological type of cancer, stage of disease IV, T4 status, M1b status, presence of respiratory comorbidity, dyspnea, chest pain. Cumulative survival of those patients was shown with Kaplan-Meier prognostic curves. Two mathematical model for 2-year survival was created from the factors confirmed as independent predictors for survival. AIM: This research objectives were to determine the influence of certain prognostic factors on 2-years survival of those patients and to create mathematical model for stratification of those patients related to 2-years survival. RESULTS: Univariante analysis confirmed that the group of patients older than 75 years and more have had better 2-year survival than group of patient younger than 75 year, but without the statistically significance, patients with tumor size ≥6cm have had worst 2-year survival in comparison with patients with tumor size <6cm, patients with tumor status T4 at the moment of diagnosis and M status M1b have had the shorter 2-year survival, patients with anemia and increased LDH level on the start of the chemotherapy treatment have had shorter 2-year survival, the presence of more comorbid conditions at the moment of diagnosis influence on shorter 2-year survival, patients with weight loss more than 5% in the previous 6 months have had shorter 2-year survival. Two mathematical models were created (one for 2-year survival and the other for the cumulative survival) for stratification of elderly patients with advanced staged non-small cell lung cancer treated with combined platinum based chemotherapy regimen related to 2-year survival. CONSLUSION: Created mathematical models for stratification of elderly patients with advanced staged non-small cell lung cancer treated with combined platinum based chemotherapy regimen more easily stratify patients compared to pretreatment prognostic factors as opposed to comprehensive geriatric assessment which is time-consuming procedure and requires trained personnel.
Tatjana, Šarčev. "Prognostički faktori u lečenju medijastinoskopski dokazanog N2 i N3 stadijuma nemikrocelularnog karcinoma bronha." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2014. https://www.cris.uns.ac.rs/record.jsf?recordId=86753&source=NDLTD&language=en.
Full textLung cancer is the most common cause of cancer related mortality worldwide. Increase in both incidence and mortality of lung cancer was registered throughout 20th century. The median survival in every stage of lung cancer has been improved in last years of 20th century but it is still not satisfactory. In most cases, lung cancer is diagnosed in advanced stage when surgical treatment as the optimal approach is not possible. Staging is the most important element in the evaluation of every lung cancer patient. Mediastinal lymph node involvement is crucial, because in most of the cases nodal staging is factor which determines appropriate use of surgery, radiotherapy and chemotherapy and it is one of the important factors influencing prognosis of lung cancer patients. Patients with proven involvement of ipsilateral mediastinal lymph nodes (N2 stage) are categorized in IIIA stage which is considered to be potentially resectable, and patients with proven involvement of contralateral mediastinal lymph nodes (N3 stage) are categorized in IIIB stage, which is considered to be nonresectable. The aim of this study was the determination of significant prognostic factors that have influence on treatment and survival of non-small cell lung cancer (NSCLC) patients in stage N2 and N3. Study was nonrandomized, partially retrospective and partially prospective. It included 60 patients treated at the Institute for Pulmonary Diseases of Vojvodina during 2006, 2007 and 2008. Cancer involvement of mediastinal lymph nodes was determined by mediastinoscopy in every patient. In study we analyzed following factors: gender, age, ECOG performance status, associated chronic obstructive pulmonary disease (COPD), associated cardiovascular disease with symptoms graded by NYHA classification, T status, position and number of involved mediastinal lymph nodes, applied treatment (surgery, chemoradiotherapy, chemotherapy alone), treatment result (response to treatment and survival). Prognostic factors for poorer survival on univariant analysis were ECOG PS 2 (p=0,0000), associated cardiovascular disease with symptoms NYHA II (p=0,00113) and involvement of contralateral mediastinal lymph nodes (N3 stage) (p=0,00003) while multi station N2 disease was borderline significant at level of p=0,05385. It was determined that patients treated with chemoradiotherapy achieved better response to treatment compared to patients treated with chemotherapy alone (p=0,03118). Univariant analyses did not confirm significance of gender, age, associate COPD, squamous cell lung cancer and T factor on survival. Multivariante analyses identified N status (better survival has N2 stage compared to N3 stage of NSCLC) and conducted treatment (better survival has chemoradiotherapy compared to chemotherapy alone) as independent prognostic factors. Our results suggest that position and number of cancer involved mediastinal lymph nodes position, proven by mediastinoscopy, as well as the conducted multimodality treatment are key prognostic factors which might influence the survival of patients with N2 and N3 stage of NSCLC.
Nenad, Lalović. "Faktori rizika značajni za nastanak dehiscencije staplerskih anastomoza kod pacijenata operisanih zbog karcinoma rektuma." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101255&source=NDLTD&language=en.
Full textINTRODUCTION: Colorectal anastomosis, which is formed deep in the pelvis because of establishment of continuity of gastrointestinal tract after resection of the part of intestines, has got its specifities during forming and healing process and when complications occur. Systemic, local and technical factors influence the healing process of anastomosis itself. Any kind of compromise in terms of these principles causes higher risk of complications! The most serious complication of anastomosis is dehiscence. “Only anastomosis which is not carried out will not dehisce.” This old surgical saying is still true, and the more distal anastomosis is, the possibility of development of dehiscence is higher, especially in lower subperitoneal anastomosis with rectum and anus. Incidence of dehiscence of these anastomosis in literature varies from 0,5 to 69 %, which may indicate the quality of surgical work, use of definition of dehiscence, kind of diagnostics etc. International group for rectal cancer defined dehiscence of anastomosis as a defect of intestinal wall, including suturing or stapler line of neorectal reservoir, which leads to communication between intra and extra luminal space. AIMS: Basic aim of this study was to determine preoperative and postoperative risk factors significant for the development of dehiscence of colorectal anastomosis, as well as significance of procalcitonin and C-reactive protein in detection of dehiscence of colorectal anastomosis at the subclinical stage of the disease. MATERIAL AND METHODOLOGY: The study included 100 patients operated on in the elective programme, on which radical operation of the rectal cancer was carried out with creation of double stapler colorectal anastomosis. All patients included in the study were randomly chosen and divided into two groups. Group A: the patients on which radical operation of the rectal cancer was carried out and primary stapler colorectal anastomosis created. Group B: the patients on which radical operation of the rectal cancer was carried out using Hartman's procedure in the first act, and reconstruction of the continuity of gastrointestinal tract was established in the second act by creation of secondary stapler colorectal anastomosis. By application of statistical tests preoperative (sex, age, comorbidities, ASA score, body mass index, preoperative application of haemoradiotherapy, laboratory analyses) and perioperative (duration of operation, distance of anastomosis from anocutaneous line, size of tumor in cm, intraoperative application of blood) risk factors for development of dehiscence of anastomosis in both groups were analysed. In all patients on the second and fourth postoperative day values of C-reactive protein and procalcitonin in the serum were analysed, regardless of the existence of clinically or non-clinically manifested signs of dehiscence of anastomosis. Also, sensitivity, specifity and diagnostically accurate C-reactive protein and procalcitonin on the second and fourth postoperative day in detection of dehiscence of colorectal anastomosis were analysed by application of ROC curve. RESULTS: There is no statistically significant difference in the development of dehiscence of anastomosis between primary and secondary double stapler anastomosis. Incidence of dehiscence of anastomosis was 11% in all samples. Eight patients were reoperated on, whereas three patients were treated conservatively. In three patients who developed dehiscence and were reoperated on, the death occurred due to sepsis and septic shock. Sex, age, comorbidities, stage of the disease, duration of operation, intraoperative application of blood were not statistically significant risk factors (p>0,05) for the development of dehiscence of primary and secondary double stapler colorectal anastomosis. Distance of anastomosis from anocutaneous line (<7cm), size of tumor over 5 cm were statistically significant risk factors for the development of dehiscence of anastomosis. There is highly statistically significant difference (p<0,001) values of CRP and PCT on the fourth postoperative day in patients with and without dehiscence of colorectal anastomosis. On the basis of ROC analysis of CRP for the fourth postoperative day, for the bordering value of 130 mg/l sensitivity is 82%, specificity 96% and diagnostic accuracy 94%. For bordering value of PCT of 0,78 ng/ml for the fourth postoperative day, by application of ROC curve, the following values were determined: sensitivity 91%, specificity 92% and diagnostic accuracy 86%. CRP for the fourth postoperative day has got higher diagnostic accuracy and specificity in detection of dehiscence of colorectal anastomosis in relation to PCT. CONCLUSION: In spite of huge technological advance, improvement of surgical techniques, better understanding of the nature of malignant diseases, improvement of intraoperative and postoperative continuous follow up of the patient, introduction of new antimicrobial medicines, the problem in treating and development of dehiscence of colorectal anastomosis is still significantly present. Detection of dehiscence of colorectal anastomosis at the subclinical stage, identification of preoperative and perioperative risk factors significant for the development of dehiscence would help in early detection of dehiscence and contribute to more effective operations.
Ana, Nešić. "Sociokulturni aspekti političkog aktivizma društva u tranziciji: primer AP Vojvodine." Phd thesis, Univerzitet u Novom Sadu, Filozofski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101102&source=NDLTD&language=en.
Full textProblem kojim se doktorska disertacija bavi je politički aktivizam i sociokulturni faktori, koji ga određuju u uslovima tranzicije i krize u kojima se Srbija nalazi. Osnovna istraživačka pitanja od kojih se u radu pošlo su: na koji način funkcioniše politički aktivizam u Srbiji, koji oblici političkog ponašanja su najzastupljeniji, kojim vrednosnim okvirima se političko ponašanje oblikuje, kao i koji sociokulturni faktori su najznačajniji prediktori političkog aktivizma. Teorijsku osnovu za istraživanje pružio je model socioekonomskog statusa u političkoj participaciji kojim se ističe značaj socioekonomskih pokazatelja u političkom aktivizmu kao što su uzrast, školska sprema, zanimanje, životni standard. Istraživanje je vršeno upitnikom koji se sastoji iz pet celina: prvi deo upitnika čine pitanja o sociodemografskim karakteristikama ispitanika, drugi deo se odnosi na politički aktivizam, treći na ispitivanje vrednosti i to modernističko-tradicionalističkih i autokratsko-demokratskih, četvrti deo upitnika meri teritorijalni identitet i naklonost određenim teritorijalnim celinama i peti se tiče odnosa prema religiji.
Uzorak istraživanja su činili članovi stranaka koje učestvuju u radu skupština u šest gradova u Vojvodini: Novom Sadu, Subotici, Somboru, Zrenjaninu, Pančevu i Sremskoj Mitrovici. Rezultati istraživanja su pokazali da su sociodemografski i sociokulturni faktori značajni za objašnjenje političkog aktivizma. Postavljene hipoteze su delimično potvrđene, jer se politički aktivizam u najvećoj meri iskazao u okviru već ponuđenih političkih dešavanja kao što su izlazak na izbore, učešće u partijskim skupovima i aktivnostima, a znatno manje kao samoinicijativne aktivnosti politički svesnih i odgovornih građana. Politička kultura koja se kroz aktivizam sagledala je pre svega podanička, sa elementima participativnog ponašanja.
Danijela, Kuhajda. "Faktori rizika koji utiču na ishod respiratorne rehabilitacije kod pacijenata sa hroničnom opstruktivnom bolesti pluća." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101428&source=NDLTD&language=en.
Full textChronic obstructive pulmonary disease (COPD) is one of the leading morbidity and mortality causes all over the world. Despite the steady advance in scientific research, introduction of novel prognostic biomarkers, new and potent bronchodilation, anti-inflammatory and anti-infectious drugs, a constant increase in the number of the affected and deceased from chronic obstructive pulmonary diseas has still been permanently evidenced in the 21st century. In a modern concept, the chronic obstructive pulmonary disease (COPD) is understood as a heterogenous disorder associated with numerous comorbidities and systemic manifestations. Common risk factors represent the basis for concomitant chronic diseases to develop. Comorbidities and acute exacerbations contribute to the overall disease severity. As a COPD may develop extrapulmonary manifestations as well, each patient should be evaluated for systemic manifestations and comorbidities. The 2011 update of the „Global Strategy for Chronic Obstructive Lung Disease Diagnosis, Management, and Prevention –GOLD‖ lists the following comorbidities to be actively searched for: cardiovascular diseases, skeletal muscle dysfunction, metabolic syndrome, osteoporosis, depression, lung cancer and bronchiectases. The treatment of COPD can be devided in two groups: pharmacological and non-pharmacological. Pharmacological treatment is today, according to GOLD, based on incremental approach. It should be carry out in every patient with simptoms. In last few years, non-pharmacological treatment of COPD is very popular, due to the evidence of positive effects on decreasing the simptoms, increasing the tolerance to exertion and decreasing the exacerbations. Non-pharmacological treatment consider: active avoiding the risk factors, smoking cessation, oxigenotherapy, vaccination against the flu, psicho-social support, respiratory rehabilitation and surgery. It is well known today that respiratory rehabilitation achieve numerous benefits in COPD patients and most of that benefits are evidence based (GOLD 2013): increasing the exercise capacity, decreasing the shortness of breath, increasing the quality of life, reduces the number and length of hospital stay, decreasing the anxiety and depression conected to COPD, the effects lasts and after the rehabilitation program, improves the survival of this patients. The primary goals of this investigation were to establish the percentage of patients with positive outcome after the respiratory rehabilitation, to determine the conection of the following factors with the outcome of respiratory rehabilitation: gender, age, „pack/years―, duration of the disease, the number of exacerbations in previous year, comorbidities: ischemic heart disease, heart failure, arterial hypertension, osteoporosis, depression, diabetes mellitus, bronchiectasis, lung cancer, tuberculosis. The other goals were to establish the influence of some parametars on the outcome of respiratory rehabilitation: FEV1, BMI, SaO2 ,6 minute walk test, „CAT― questionnaire, „mMRC― questionnaire, BODE index. This was retrospective-prospective study the included 500 patients with COPD, from I to IV stadium, in stable disease, who have done the two years complete program of ambulatory respiratory rehabilitation. The program have been done in polyclinic for respiratory diseases, Institute for pulmonary disesases of Vojvodina, Sremska Kamenica. The results showed that 452 patients (90,4%) achieved positive outcome of respiratory rehabilitation. The majority of patients 142 (28,4%) were in ―very good‖ caterogy, the 129 patients (25,8%) in category ―good‖, ―satisfied‖ 102 patients (20,4%) and ―excellent‖ 79 patients (15.8%). After completion of the respiratory rehabilitation program, statistically significant improvements of the following parameters have been achieved: FEV1, 6MTH, SaO2, mMRC, BODE index. Gender, age, smoking, duration of the disease and ≥2 exacerbations in previous year did not have influence on the successful respiratory rehabilitation outcome. The statistically significant negative correlation between the heart failure and positive respiratory rehabilitation outcome has been achieved, while there were no statistically significant correlations among other comorbidities and the successful respiratory rehabilitation outcome. The statistically significant univariant predictors of positive outcome of respiratory rehabilitation are: less comorbidities, absence of heart failure, lower oxygen saturation, higher BMI, , mMRC ≥ 2, CAT ≥ 10, B i D stadium of disease, while multivariant logistic regression analysis showed that the independent predictors of positive outcome of respiratory rehabilitation are: less comorbidities, absence of heart failure, higher BMI, CAT ≥ 10.
Kristina, Tot Vereš. "Prediktivni faktori za neželjeni događaj tokom jednogodišnjeg praćenja pacijenata obolelih od hronične opstruktivne bolesti pluća." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104740&source=NDLTD&language=en.
Full textChronic obstructive pulmonary disease is one of the most common chronic lung diseases and is an important cause of morbidity and mortality in the world. Exacerbations are an important event in the course of the disease, as they have a negative impact on mortality, quality of life, lung function decline and increased costs of treatment. The aim of study is to identify risk factors for exacerbation or death during the one-year follow-up of patients with chronic obstructive pulmonary disease, and creation of predictive models for exacerbation and mortality during the follow-up period. The study included 200 patients with a confirmed diagnosis of chronic obstructive pulmonary disease who have had the therapy according to the Global initiative for chronic obstructive airway diseases guidelines. Patients were followed for one year, evaluated the number of exacerbations on the basis of emergency visits and eventual death. With statistical data processing there were identified independent predictors of exacerbations (age > 65 years, COPD Assessment Test > 9, modified Medical Research Council scale >2, oxygen saturation ≤ 93%) and death (age > 65 years, the need for application of antiplatelet therapy, the rate of maximum expiratory flow at 25% of vital capacity ≤ 1,16 l, modified Medical Research Council scale >2, heart rate > 89th). Of these independent factors was created a models for the prediction of adverse events during the one-year mark of COPD patients. Internal validation showed good predictive value of both models. No difference between the observed and the expected percentage of occurrence of exacerbations or death during the the follow-up period.
Aleksandar, Jovanović. "Psihički poremećaji nakon ishemijskog moždanog udara." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101562&source=NDLTD&language=en.
Full textINTRODUCTION: Stroke belongs to noninfectious diseases, which are considered the most common diseases of modern man. It is one of the most common causes of mortality and disability in the modern world. The many associated complications of stroke include mental disorders: depression, anxiety and psychotic disorders. Determining the relationship between stroke and mental disorders, as well as enlightening their underlying mechanism, represents a significant contribution to a better understanding of this very frequent disease, and an early treatment of these associated disorders should allow a faster and more complete recovery from stroke. OBJECTIVE: To determine characteristics of mental functioning after ischemic stroke, to determine the impact of lesion localization on development of certain mental disorders after stroke, to determine the impact of vascular status on development of mental disorders, and to determine the correlation between the associated mental disorders and the speed and degree of recovery of general life activities. MATERIALS AND METHODS: The research was conducted as a prospective study that included 101 ischemic stroke patients of both sexes, hospitalized at the Clinic of Neurology in Novi Sad. Data about the course of disease and stroke risk factors was collected and laboratory diagnostics was performed in all patients. All patients underwent brain computed tomography (CT) (or magnetic resonance imaging - MRI), and ultrasound examination of carotid and vertebrobasilar arteries and the circle of Willis. The degree of neurological deficit and functional recovery in the acute phase and at 3-month follow-up were assessed using the National Institute of Health Stroke Severity (NIHSS) scale, the Rankin scale, and the Barthel Index. All patients underwent psychological exploration of the mental status in the acute phase of stroke by using the Beck Depression Inventory 2 (BDI - 2), the State-Trait Anxiety Inventory (STAI), the Positive and Negative Syndrome Scale (PANSS), and the Cornell Services Index (CSI). Follow-up testing with the same tests was performed after 3 months. Statistical analysis included methods of descriptive statistics: tabular presentation of the frequency and percentages in case of nonparametric (nominal or ordinal) variables. Contingency tables were used to present relationships between two variables. In addition, measures of central tendency (arithmetic mean) and measures of dispersion (standard deviation) were used for parametric variables. The chisquared test was used to determine differences between groups for nominal measurement variables, Cramer’s V was used to examine association between nominal levels of measurement. Association between interval measurement variables was measured by the Pearson correlation coefficient (r), and significance of differences between arithmetic means of more groups was determined by the analysis of variance (ANOVA). RESULTS: The study included 101 patients, 65.3% male and 34.7% female. The average age of patients was 60.69 years (median=62.00, standard deviation=10.828, statistical error=1.077). Stroke localizations were as follows: the right cerebral hemisphere in 38.6%, the left hemisphere in 34.7%, the cerebellum in 4%, the brainstem in 11.9%, and 10.9% of patients had multiple localizations. In 39.6% of patients, stroke was territorial, and in 59.4% lacunar. The distribution of risk factors for stroke was typical for the study area. Normal carotid arteries were found in 26.7%, 26.7% had diffuse atheromatosis, 27.7% had <70% ACI stenosis, and 18.8% had >70% ACI stenosis. As regards VB circulation, 52.5% had normal findings and 47.5% had pathological findings (stenosis and diffuse atheromatosis). As regards the circle of Willis, 54.5% had normal findings and 45.5% had pathological findings (stenosis and diffuse atheromatosis). Regarding mental functioning, 5.9% had depressive disorder, 29.7% had anxiety disorder, 9.9% had neurotic disorder, and 2% had psychotic disorder. In relation to sex, mental disorders were present as follows: depressive disorder in 3% of men and 11.4% of women, anxiety disorder in 25.8% of men and 37.1% of women, neurotic disorder in 7.6% of men and 14.3% of women, and psychotic disorder in 3% of men and none of women. With respect to age, among patients under 45 years of, age none had depressive disorder, 30% had anxiety disorder, 10% had psychotic disorder, and none had neurotic disorder. In the group of patients aged 46-65 years, 6.9% had depressive disorder, 22.4% had anxiety disorder, 12.1% had neurotic disorder, and 1.7% had neurotic disorder. In the group above 65 years of age, 6.1% had depressive disorder, 42.4% had anxiety disorder, 9.1% had neurotic disorder, and none had psychotic disorder. The distribution of responses obtained on the BDI-2 showed a higher prevalence of depressive disorder in patients with lesions in the left cerebral hemisphere. The distribution of responses obtained on the STAI showed a higher prevalence of anxiety disorder in patients who had lesion of the right hemisphere. The distribution of responses obtained on the CSI showed a higher prevalence of neurotic disorder in those who had multiple lesions. The distribution of responses obtained by the PANSS indicated a higher prevalence of psychotic disorder in those with lesion of the right hemisphere. Comparison of carotid artery lesions and mental disorders showed a progressive increase in the prevalence of mental disorders with increasing severity of the lesions, as well as a complete absence of mental disorders in people who had normal findings on carotids. The follow-up results showed that mental disorders (generally and individually) did not have a statistically significant effect on functional recovery of stroke patients. There were statistically significant comorbidities of depressive disorder and anxiety disorder, depressive disorder and neurotic disorder, and anxiety disorder and neurotic disorder, and no significant interactions of any of these disorders with psychotic disorder. CONCLUSION: In patients with ischemic stroke, anxiety disorder has the highest prevalence, followed by depressive disorder, whereas psychosis is the rarest. Depressive and anxiety disorders are significantly more common in women, while psychotic disorder occurs exclusively in men. Depressive disorder is significantly more common in the middle and old ages, anxiety disorder is more frequent in the younger and middle ages, while psychotic manifestations occur most often in the middle age of life. Depressive and anxiety disorders are similarly prevalent in patients with territorial and lacunar strokes, while psychotic manifestations occur exclusively in patients with territorial stroke. There is no significant correlation between the presence of stroke risk factors and mental disorders, although there is an evident absence of mental disorders in patients without stroke risk factors. Three months after stroke, no significant regression of the symptoms of mental disorders was observed. Anxiety disorder and psychotic manifestations are significantly more common in right hemispheric stroke, while as regards depressive disorder, there is no statistically significant association with left-hemispheric stroke. Mental disorders in stroke patients are more common in those with carotid lesions and increase in severity with increasing severity of lesion and degree of stenosis. There are no statistically significant correlations between lesions in the vertebrobasilar circulation or the circle of Willis and development of mental disorders. No significant impact of mental disorders on recovery from stroke was found. A high prevalence of comorbid depressive and anxiety disorders was proven/confirmed.
Slađana, Martinović Mitrović. "Uticaj dužine ekspozicije heroinu na egzekutivne funkcije opijatskih zavisnika." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=95369&source=NDLTD&language=en.
Full textINTRODUCTION: Executive functions represent an integrated set of mental abilities involved in the production, monitoring and controlling of the goal-oriented behavior. Primarily, they are responsible for managing new situations which are placed outside the domain of automatic mental processes. Heroin abuse over a longer period of time results in the damage of the executive functions which significantly reflects on personal, professional and social functioning of an addict. THE AIM OF THE STUDY: The aim of this study is investigating the impact of substance abuse on executive control processes, testing the existence of a specific relationship between possible deficits of executive performance of opiate addicts and heroin exposure length, as well as defining the damage predictors of executive functions in opiate addicts. MATERIALS AND METHODS: The study was conducted by the cross-sectional study and included 200 examinees divided into two groups. The experimental group consisted of 150 heroin addicts, aged from 18 to 35 years, who were abstinent for at least 3 weeks. The control group included 50 healthy examinees of the same sex, age and educational background as the examinees in the experimental group. To collect the data, the following instruments were used: a general structured questionnaire – specifically designed for the purposes of this study, based on self-assessment, which refers to the basic socio-demographic characteristics and addictological features of examinees; Psychopathy Assessment Questionnaire for evaluation (control) of the possible impact of personality structure of addicts on achievement on tests used to assess executive functions; for the assessment of condition of executive functions: Verbal Fluency Task - phonemic fluency, Wechsler Adult Intelligence Scale, Trail Making Test, Barratt impulsiveness Scale, Wisconsin Card Sorting Test, Iowa Gambling Task Iowa Gambling Task. RESULTS: In heroin addicts significant deficits in executive domains were recorded: updating, inhibition, shiffring and decision making. The damage of executive functions can be predicted on the basis of the following factors: total length of heroin abuse, the average daily dose of heroin, number of abstinence compared to the total duration of heroin abuse and age of addicts at their first contact with psychoactive substances. CONCLUSION: The consumption of heroin is associated with significant impairment of the system of executive functions. This results in addicts having difficulties to overcome habitual responses and adjust behavior to the requirements imposed by new situations, as well as in the tendency to make high-risk decisions that result in current gain, regardless of inevitable later negative consequences.
Olivera, Ninković Mrđenovački. "Faktori koji utiču na postignute vrednosti krvnog pritiska osoba sa dijagnostikovanom arterijskom hipertenzijom na nivou primarne zdravstvene zaštite." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104728&source=NDLTD&language=en.
Full textIntroduction. Cardiovascular diseases, as part of a group of chronic noncommunicable diseases, have been and still are the leading cause of morbidity and mortality in the world. Numerous scientific proofs confirm that arterial hypertension is a major cardiovascular risk factor and that the achieved blood pressure values lower than 140/90mmHg significantly reduce cardio-vascular risk, or the appearance of cardio-vascular events, mainly myocardial infarction and stroke. Arterial hypertension is the most common condition that is seen in primary health care institutions and preventive measures, early diagnosis, treatment and control of arterial hypertension are a public health challenge in all countries of the world. Objectives. The objectives of the research were to determine the prevalence of arterial hypertension which is controlled; to determine the prevalence and correlation of the metabolic factors with the outcome in blood pressure control; to determine the prevalence and correlation of unhealthy lifestyles with the outcome in blood pressure control; to determine the predictors of poor blood pressure control and calculate a 10-year cardiovascular risk. Methods. The cross-sectional study (of prevalence) included 373 respondents of both sexes aged 45 to 75 years diagnosed with arterial hypertension who in the period from October 2015 to February 2016 visited their chosen doctor. Data collection was performed by measuring blood pressure, anthropometric measurements, biochemical analyses and surveying by filling out a questionnaire. Results. The sample consisted of 55% women and 45% men, of mean age of 59±6.3 years. The results showed low incidence of arterial hypertension under control of 39.1%, and high incidence of metabolic factors (44.5% of overweight, 34% of obesity, 29% of diabetes mellitus, 88.2% of elevated fat and 41.8% of the metabolic syndrome) as well as their association with the outcome in blood pressure control as the respondents with uncontrolled blood pressure usually had two risk factors (40.5%), while the group with controlled blood pressure usually had one risk factor (45.9%). It was found that the average values of systolic, diastolic blood pressure and heart rate were significantly (p<0.001) lower in the group with controlled blood pressure, as well as that the respondents with uncontrolled pressure had a significantly greater waist circumference (p=0.006), the metabolic syndrome (p<0.001) and more often drunk greater number of medicines (p<0.001). There was a high prevalence of smoking (26.3%) and a high incidence of sedentary lifestyle (76.7%) and it was found that knowledge, attitudes, and behaviors of the respondents related to risk factors (smoking, alcohol consumption, physical inactivity and excessive use of salt) were not satisfactory. As independent predictors of arterial hypertension which was not under the control, the study obtained waist circumference, body weight, body mass index, age, heart rate value, the number of medicines that the respondents drunk, second-hand smoking, unawareness of the existence of arterial hypertension, inexperience on the harmful effects of excessive amounts of alcohol, not overcome myocardial infarction and stroke. It was calculated that 22.2% of hypertensive respondents with diabetes and 2.7% of respondents with arterial hypertension without diabetes were in the high and very high risk of adverse Conclusion. It is necessary to implement public-health educational and promotional activities in order to increase the knowledge, changes in the attitudes and behavior of the population with arterial hypertension due to the poor control of blood pressure and the presence of the high incidence of associated risk factors affecting its control.
Mirjana, Miladinović. "Proteinska ekspresija i genska amplifikacija receptora humanog epidermalnog faktora rasta 2 ( HER2) kod adenokarcinoma pluća." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=107833&source=NDLTD&language=en.
Full textHuman epidermal growth factor 2 (HER2) is a member of the epidermal growth factor family having tyrosine kinase activity, which is directly linked to malignant cells proliferation, apoptosis inhibition, tumor angiogenesis and ability for invasion and metastasis. Increased protein expression of HER2 receptors can be the consequence of gene amplification and/or transcription changes. Expression of HER2 receptors in human tumors is associated with more aggressive behavior and worse prognosis. Incidence of increased protein expression of HER2 receptors in non-small-cell lung carcinoma (NSCLS) is mainly represented in adenocarcinoma, in comparison with other histological types. Identification of HER2 positive NSCLC enables determination of a group of patients who would be candidates for specific therapy. The problem occurs in choosing the method of detection of HER2 receptors and non-existence of determined protocol for reading the results, as the one ones which exist for breast and gastric carcinoma. The main objectives of this PhD dissertation were: to determine the incidence of increased protein expression of HER2 receptors in lung adenocarcinoma; to compare the results of the increased protein expression of HER2 receptors obtained by using HER2 antibodies "HercepTest Dako" and "Ventana anti-HER2/neu (4B5)" antibodies; to compare the presence of HER2 gene amplification by in situ hybridization (ISH) (Dual IHC HER2 kit: Ventana Medical Systems) by retesting the samples in which the increased protein expression of HER2 receptors was graded with 2+ and 3+, obtained by "HercepTest Dako" with present gene HER2 amplification on samples obtained by "Ventana anti-HER2/neu (4B5) and graded with 2+ and 3+; to compare the incidence of increased protein expression of HER2 receptors and presence of HER2 gene amplification in different histological subtypes of lung adenocarcinoma; to determine if the increased protein expression of HER2 receptors in lung adenocarcinoma and/or presence of gene amplification is related to demographic (age and sex of the patient) parameters, smoking status, appearance of metastases in regional lymphatic nodes, distant organs, infiltration of pleura and surrounding structures, and stage of the disease. Increased protein expression of HER2 in lung adenocarcinoma is 7.4% for HercepTest Dako and 2.7% for Ventana anti-HER2/neu (4B5) antibody. In positive expression they are correlated in 2%, while in negative expression they are correlated in 91.9% cases, which is overall 93.9%. The incidence of HER2 gene amplification in lung adenocarcinoma is 17.6%, from that in 2.7% of the cases high grade amplification is present. There is a statistically significant correlation between increased protein expression of HER2 receptors obtained by use of HercepTest Dako and Ventana anti-HER2 /neu (4B5) antibody and amplification of HER2 genes. Amplification of HER2 genes is present in 90.9% of patients with increased protein expression of HER2 receptors, which is obtained by using HercepTest Dako and in 75% patients by using Ventana anti-HER2/neu (4B5) antibody. Increased protein expression of HER2 receptors obtained by HercepTest Dako and Ventana anti-Her2/neu (4B5) antibody is most common in solid predominant type of adenocarcinoma in pathological T2a descriptor and IB stadium and acinar predominant type of adenocarcinoma in pathological T1b descriptor and IA stadium. Amplification of HER2 genes is most common in solid, and then in acinar and papillary predominant type of adenocarcinoma. Increased protein expression of HER2 receptors obtained by HercepTest Dako and Ventana anti-HER2/neu (4B5) antibody and amplification of HER2 genes most commonly occurs in men, smokers, at the age of 61-70 years, tumor size 31-50 mm, NO and MO disease status, without presence of tumor infiltration of pleura and surrounding structures.
Slobodan, Pantelinac. "Uticaj biopsihosocijalnih faktora na ishod rehabilitacije pacijenata nakon lumbalne mikrodiskektomije." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2014. http://www.cris.uns.ac.rs/record.jsf?recordId=89984&source=NDLTD&language=en.
Full textIntroduction: Microdiscectomy is one of the modern surgical methods for the treatment of people with low back pain, caused by a herniated intervertebral disc. On postoperative recovery, rehabilitation outcome and functional status, among others, great influence have also biopsychosocial factors. Goal: The main goal of the research was to assess which biopsychosocial factors have a significant impact on treatment outcome and functional status of patients with low back pain after lumbar microdiscectomy and the subsequent physical therapy. Material and methods: The research was conducted as a prospective study on 200 patients (96 men and 104 women), of various professions and mean age 50.20 ± 26.10 years (range 29-69 years). The study involved patients after surgical treatment of disc herniation by microdiscectomy, who were transferred from the Clinic for neurosurgery to the Clinic for medical rehabilitation, in Clinical center of Vojvodina, Novi Sad, in order to perform physical therapy and rehabilitation. Stratification of patients was performed according to their biological, demographic, socio-economic, psychological and functional characteristics, using data from the health history, clinical examination, the available medical records and appropriate questionnaires and tests. Among the questionnaires were those that are used for assessment of pain, psychological and psychosocial characteristics and functional status of patients with low back pain, including a visual analogue scale, Pain Detect Test, Spielberger Anxiety Inventory-State and Trait, Beck Depression Inventory, The Fear-Avoidance Beliefs Questionnaire (Physical activity and Work), Oswestry Low Back Pain Disability Questionnaire (ODI) and Quebec Back Pain Disability Scale. The flexibility of the lumbar segment of the spine and its movement index were assessed by Schober's and Thomayer's tests. All of these above mentioned assessments were carried out just before the start of the rehabilitation treatment (month 0), at the beginning of physical therapy (month 0), one month later and then 3 and 6 months after microdiscectomy. Results: On the pain and functional ability / disability the significant influences had following listed factors. Gender: subjective perception of pain was stronger among women than among men, but the degree of functional disability (ODI and Quebec Scale) was significant higher in the group of men (p<0.01). Age: The degree of recovery among patients after microdiscectomy over time in different age groups was varying, but in general was worse in the group of older people. Smoking habits: pain intensity and degree of functional disability were higher among smokers than nonsmokers (p<0.01). Mechanical loading of the spine: lower degree of recovery had subjects whose job is associated with a higher dynamic and static loading of the spine. Social factors: regular employment and cash income are associated with better functional recovery. Psychological status and the degree of optimism: anxiety and fear of physical activity and work as well as the possibility of job loss, depression, negative attitudes and pessimism, were significantly more often present in the group of patients who had a lower degree of functional recovery during the studied period. Conclusions: On the experience of pain, on functional ability and recovery of patients after microdisectomy, significant influences have the following biopsychosocial factors: gender, age, smoking habits, the mechanical loading of the spine, socio-economic factors, psychological status and the degree of optimism of the patient. Using the appropriate questionnaires and registering mentioned factors, it is possible to create a model for predicting the degree of functional recovery and for the application of additional therapeutic procedures after microdisectomy.
Darijo, Bokan. "Uticaj demografskih faktora i karakteristika tumora na preživljavanje obolelih od karcinoma bronha u Vojvodini." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=114455&source=NDLTD&language=en.
Full textWorldwide, lung cancer remains the leading cause of cancer incidencije and mortality, with 2.1 million new lung cancer cases and 1.8 million deaths predicted in 2018. Methodology: For the purpose of this retrospective study we collected data of 21915 patients from seven Public Health Institutes, one for each district. This data was categorized by five-year age groups during 2010–2016. Survival analysis data of 8142 patients was collected from the Institute for Pulmonary Diseases of Vojvodina Hospital Information System and the Lung Cancer Registry. The primary objective was to determine the impact on overall survival by assessing demographic and clinical pathological characteristics in these patients. The secondary objective was to analyze the incidencije and mortality of lung cancer in the region of Vojvodina. Incidencije and mortality rates were directly age-standardized to the World and Europe Standard Population. A total of 7540 patients were eligible for the survival analysis, 5456 (72.4%) males and 2084 (27.6%) females. The average survival time, including all stages and cancer types was 17.1 months for men and 23.2 months for women (p = 0.000). There was statistically significant difference in survival time by gender in subtypes of adenocarcinoma (p = 0.000), squamous cell carcinoma (p= 0.000) and microcellular carcinoma (p = 0.001). Analysis showed significant difference in survival by age (p = 0.000), cancer type (p = 0.000), stage of the disease (p = 0.000), ECOG performance status (p = 0.000), smoking status (p = 0.001), TNM stage of disease (p = 0.000) and among districts (p = 0.014). Male gender (p = 0.000), age over 60 (p = 0.000), ECOG performance status 2 and greater (p = 0.000), smoking habit (p = 0.002), lower socioeconomic status (p = 0.000), stage IV of disease (p = 0.000) and small cell lung cancer as tumor type (p = 0.000) were identified as independent prognostic factors. One-year survival in 1A stage was 78.1%, in 1B stage 73.2%, 2A stage 70.4%, 2B stage 52.1%, 3A stage 42.3%, 3B stage 28.3 %, while in stage 4 was 17.9%. Three-year survival in 1A stage was 40.8%, in 1B stage 37.5%, 2A stage 31.2%, 2B stage 21.6%, 3A stage 9.7%, 3B stage 5.5 %, while in stage 4 was 2.9%. Five-year in 1A stage is 32.1%, in 1B stage 19.3%, 2A stage 16.2%, 2B stage 13.3%, 3A stage 4.4%, 3B stage 2.6 %, while in stage 4 was 1.6%. The incidencije rate was 118.9 per 100000 for males and 43.3 per 100000 for women. The standardized incidencije rate was 65.4 per 100000 for males and 21.7 per 100000 for females. There was a statistically significant difference by districts (p = 0.001). Mortality rate was 125.1 per 100000 for males and 43.8 per 100000 for females. The standardized mortality rate was 67.6 per 100000 for males and 20.9 per 100000 for females. There was also a statistically significant difference by district (p = 0.001). There was a statistically significant difference in overall survival by gender (p = 0.000), age (p = 0.000), place of residence (p = 0.014), smoking status (p = 0.001), ECOG performance status (p = 0.000), and socioeconomic status (p = 0.000). There was also a statistically significant difference in the overall survival by tumor type (p = 0.000), stage of disease (p = 0.000), T-descriptor (p = 0.000), N-descriptor (p = 0.000), and M-descriptor (p = 0.000). One-year survival rate was 32.5%, three-year survival was 9.2%, and five-year survival rate was 5.0%. Incidencije and mortality rates data were analyzed for the territory of Vojvodina, and it was found that there were significant regional differences.
Borislav, Čabrilo. "Diverzitet faune i ekologija intestinalnih nematoda žutogrlog miša (Apodemus flavicollis Melchior, 1834) na teritoriji Srbije." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104328&source=NDLTD&language=en.
Full textA study of intestinal nematode parasites was conducted on the yellow-necked mouse (Apodemus flavicollis Melchior, 1834) sampled from 18 sites from Serbia south of the Sava and Danube rivers. The aim of the study was to broaden and enrich the data on this category of rodent parasites in this part of Europe. The nematode fauna of the gastrointestinal tract was analysed from quantitative, community, biological, biodiversity and sex ratio aspects. In addition, selected extrinsic and intrinsic factors were tested for their influence on the prevalence and abundance of infection.Nine species of intestinal nematodes were noted, 1 to 7 per site. Total sample prevalence was 81.6%. Heligmosomoides polygyrus and Syphacia stroma were the most common species, with the highest prevalence and intensity values. Nematodes were aggregated within their hosts. Infracommunity richness varied from 1 to 5, but infections with one or two species were most common. The most frequentcombination of species was H. polygyrus-S. stroma, but in absence of prior research and adequate null models, conclusions of possible interactions and associations between species could not be drawn.Monoxenous nematodes were more abundant and prevalent than heteroxenous species, reflecting the differences in their life cycles. Of the monoxenous nematodes, geohelminths sensu stricto had the highest prevalence values, whereas ageohelminths were most abundant, with respect to their life strategies that favour either dispersal or accumulation. Shannon’s diversity index for the total sample was 1.44, a high value compared to those from other European based studies. A significant negative correlation between site distance and Sorensen index values was not found, implying that spatial factors have an important role in structuring intestinal nematode communities on a local scale. Sex ratio was generally female-biased, in agreement with data from other authors. In addition, females were larger than males, congruent with previous findings for parasitic nematodes.Elevation did not significantly influence intestinal nematode abundance. Host sex influenced the prevalence of two species: for S. stroma prevalence was higher in males, and for Trichuris muris in females. Influence of host sex on abundance was found only for Aonchotheca annulosa, with abundances of this parasite higher in male mice. The results suggest that the effectof host sex on parasite infection levels is a highly complex phenomenon. Infection prevalence and abundance was higher in hosts that carried B chromosomes. Site was a significant factor in explaining variations in nematode abundance. Hostage and presence of other nematode species also exibited effects. An increase in nematode abundance with host age is explained by prolonged exposure to parasites in older host individuals. Although results indicate that the abundance of one species influences the abundance of another, this is not firm evidence of the existence of species interactions.
Nataša, Dragnić. ""Konstrukcija i analiza klaster algoritma sa primenom u definisanju bihejvioralnih faktora rizika u populaciji odraslog stanovništva Srbije"." Phd thesis, Univerzitet u Novom Sadu, Doktorske disertacije iz interdisciplinarne odnosno multidisciplinarne oblasti na Univerzitetu u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=99629&source=NDLTD&language=en.
Full textThe cluster analysis has a long history and alarge number of clustering techniques havebeen developed in many areas, however,significant challenges still remain. In thisthesis we have provided a introduction tononsmooth optimization approach to clusteringwith reference to clustering large datasets.Nevertheless, these optimization clusteringalgorithms work much better when a datasetcontains only vectors with continuous features.One of the main challenges is clustering of largedatasets with categorical and mixed (numericaland categorical) data. Clustering deals with alarge number of instances (objects) and a largenumber of dimensions (variables) can beproblematic because of time complexity. One ofthe ways to solve this problem is by reducingthe number of instances, without the loss ofinformation.The first aim of this thesis was to comparethe results of cluster algorithms on the wholedataset and on simple random samples withcategorical and mixed data, in terms of validity,for different number of clusters and fordifferent sample sizes. There were nosignificant differences (p>0.05) between theobtained results on the samples of the size of0.03m,0.05m,0.1m,0.3m (where m is the size ofthe dataset) and the whole dataset.The second aim of this thesis was todevelop an efficient clustering procedure forlarge datasets with categorical and mixed(numeric and categorical) values. The proposedprocedure consists of the following steps: 1.clustering on simple random samples of a givencardinality; 2. finding the best cluster solutionon a sample (by appropriate validity measure);3. using cluster centers from this sample forclustering of the remaining data.The third aim of this thesis was toexamine clustering of four lifestyle risk factorsand to examine the variation across differentsocio-demographic groups in a Serbian adultpopulation. Cluster analysis was carried out ona large representative sample of Serbian adultsaged 20 and over. We identified fivehomogenous health behaviour clusters withspecific combination of risk factors: 'No RiskBehaviours', 'Drinkers with Risk Behaviours','Unhealthy diet with Risk Behaviours','Smoking'. Results of multinomial logisticregression indicated that single adults, lesseducated, with low socio-economic status andliving in the region of Vojvodina are most likelyto be a part of the clusters with a high-riskprofile.
Abel, Baltić. "Fizičko vežbanje u terapiji gojaznosti kod osoba obolelih od periferne vaskularne bolesti." Phd thesis, Univerzitet u Novom Sadu, Fakultet sporta i fizičkog vaspitanja u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107078&source=NDLTD&language=en.
Full textthey represent a large social and economic burden. Diseases of peripheral arterial circulation can bedivided into two groups - the occlusive and non-occlusive disease, or functional impairment.Incidence of arterial disease of the lower extremities is strongly associated with age. Risk factorsfor peripheral arterial disease are similar to those that are important in the etiology of coronaryartery disease: obesity, smoking, dyslipidaemia, diabetes and hypertension. The most typicalpresentation of peripheral arterial disease is intermittent claudication, which is characterized withpain in the leaves, which increases during walking; the pain usually goes away in peace. All obesepatients with peripheral arterial disease of the lower extremities have an increased risk of futurecardiovascular incidents, and they require general secondary prevention in order to improve theirhealth forecasts. Physical activity represents the method of choice in patients with peripheralarterial disease of the lower extremities.Aim of the research: Compare the effects of programmed physical activity and medical therapy onhemodynamic and risk factors for cardiovascular diseases in patients with peripheral arterialdiseases of the lower extremities.Subjects and methods of research: A retrospective-prospective, clinically descriptive, controlledstudy was conducted on subjects of the Public Institution Health Care Centre of Sarajevo Canton–Specialist-consultative unit. Specialist-consultative unit represents secondary outpatient level ofhealth care. This study evaluated a period of 20 weeks (140 days). The study involved 75 subjects.At the beginning of the study, based on the findings of colour Doppler sonography of the pedalarteries, the findings of ejection fraction of the left ventricle, spirometry findings, values ofpulmonary aortic pressure and the determination of overweight - obesity subjects were included inthe research. In addition to ultrasound findings and spirometry findings, patients provided anexhaustive history of previous illnesses. Measurement of the body weight index, waistcircumference and claudication distance were performed. Lipid status and morning blood glucoselevel were performed for each patient. Prescribed or prolonged medicinal therapy was performedfor patients, and detailed instructions for everyday vasoactive walking program were given.Research resultsAt the beginning of the study, the average volume of the subjects' waistcircumference was 87.94 ± 3.07cm, after two weeks the average volume of the waist was 87.10 ±2.0 cm, and at the end of the study 84.96 ± 1.98cm. At the beginning of the study, subjects of thetested group had a body mass index of 28.93 ± 2.10 kg / m2. After two weeks of research andperformed therapy, the body mass index decreased and amounted to 28.36 ± 1.99 kg / m2, so that atthe end of the study, the average body mass index in the tested group was 27.26 ± 1.87 kg / m2.The mean blood glucose level at the beginning of the study was 5.77 ± 0.96 mmol / L, during thestudy this value was 5.42 ± 0.88 mmol / L, and at the end of the study, 5.30 ± 0.92 mmol / L. Thepostprandial blood glucose level at the beginning of the study was 7,48 ± 0,85 mmol / L, during thestudy, this value was 6.82 ± 0.62 mmol / L, and at the end of the study, 6.44 ± 0.64 mmol / L. Atthe beginning of the study, the HbA1c value was 5.52 ± 0.91%, during the study 5.32 ± 0.97%, andat the end of the study, 5.09 ± 0.73%. The C-reactive protein (CRP) mean at the beginning of thestudy was 3.77 ± 1.12mg / L, during the study, the value was 3.66 ± 1.36mg / L, and at the end ofthe study, this value was 3.61 ± 1.21mg / L. Paired t-test did not show a statistically significantreduction or an increase in CRP during the study. The average blood cholesterol of the subjects atthe beginning of the study was above the reference values and amounted to 6.58 ± 0.90 mmol / L.After two weeks of research and therapy, the value was 4.96 ± 0.46 mmol / L, and at the end of thestudy the value was 4.15 ± 0.54 mmol / L. The average triglyceride values at the beginning andduring the study were elevated so that at the end of the study they were within the reference values.VIIIThe difference between the values of leptin in male subjects at the beginning and at the end of thestudy were 2.66 ± 1.52 ng / ml (t = 3.024; p = 0.094) while there was no statistically significantdifference in female subjects. The average values of plasma viscosity were initially and during thestudy above the reference values, and at the end of the study this value was within the limits ofphysiological values. The mean values of PSV at the beginning and during the study were withinthe limits of pathological values, and at the end of the study the value was within the physiologicallimits. At the beginning of the study, the mean PSV value was 25.64 ± 5.38 cm / s, during the study26.94 ± 5.31 cm / s, and at the end of the study it was 35.84 ± 5.73 cm / s. During all threemeasurements statistically significant improvement was observed. At the beginning and during thestudy, the subjects of the tested group had pathological values of claudication distance, and at theend of the study this value was within the physiological limits. A statistically significant reductionin pulse was observed during the study, in physiological frameworks. Although there wasstatistically significant improvement in EFLV, however, the values at the end of the study were atthe lower limits of physiological values. During the study, statistically significant improvement inthe value of pulmonary aortic pressure was obtained. Although there was statistically significantimprovement in FEV1, the values at the end of the study were at the lower limits of physiologicalvalues.Conclusion - The values of the body mass index of subjects involved at the end of the study werestatistically significantly reduced. The average value of cholesterol and triglycerides, as well as theaverage value of PSV, BMI, EFLV, FEV1 as well as all other comparable parameters, decreasedsignificantly after both treatments. Based on the obtained results it was found that the claudicationdistance was statistically significantly lower than the baseline values. Comparing the effects ofmedicinal treatment with the effects of the combined therapeutic approach, it is concluded that allthe compared parameters, other than C-reactive protein in the blood, were statistically significantlyimproved at the end of the combined treatment compared to the values at the end of the medicinaltreatment.
Jana, Ilić. "Povezanost između različitih faktora rizika za pojavu osteoporoze i koštane mase u postmenopauznih žena." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101174&source=NDLTD&language=en.
Full textIntroduction: Osteoporosis is a systematic disease of skeleton characterized by the reduction of bone mass and changes in bone structure which result in the increased aptitude of bone tissue to fractures. According to the suggestion of the World Health Organization, the diagnosis for osteoporosis is set if the T-score is -2.5 SD and below it and the normal report if the value of T-score is -1.0 SD and above it. Nowadays, it is considered that the golden standard in osteoporosis diagnostic is the use of double X absorption densitometry of lumbal spine and hipe which provides the values of bone mass Bone mineral density as well as T-score. However, it has been known that there are risk factors whish influence the reduction of bone mass by reducing maximum bone mass gained by the age of 35 and/or by quckening, the normal process of gradual and mild reduction of bone mass starting after 35 and in that way increase the risk toward fractures. It mas also been known that some of the risk factors and their correlation may cause the increasement of the risk factor toward fractures not having the connection with the bone mass and T-score. Researchment aims: 1. Determine bone mass in postmenopausal women using double X absorption densitometry. 2. Analyse distribution of risk factors in patients whith the T-score below -2.5 SD comparing to the patients with T-score above -1.0SD. 3. Determine the relation between statistical space made by individual and associated risk factors (with the characteristics of each of them) and the bone mass specified by densitometry. Material and methods of working: Researchment is outlined partly as prospective and partly as retrospective study which was carried out in patients in postmenopausal life period, aged 50-80. After applying double X absorption densitometry of lumbal spine and hip the examined patients did the questionnaire by themselves whith the help of nurses and doctors. After obtaining the data, patients were divided into two groups: with and without osteoporosis. There were 270 patients in the group with osteoporosis and 250 of them without it. Thereafter, the statistic data processing was carried out. After the overall analysis of obtained results of researchment, following conclusions were conducted: 1. It has been determined that 60 % of postmenopausal women of average age 67.0±7.0 have osteoporosis, in other words, their T-score is ≤ -2.5 SD. 2. There is statistically important relationship between the bone mass and following risk factors: positive family anamnesis to osteoporosis and fractures, body weight, height, previos fractures, frequent falls and reduction of height for more than 3 cm. 3. Analysing the risk factors, characteristics of persons with osteoporosis have been obtained: positive family anamnesis to osteoporosis and fractures, smaller body weight and height, the reduction in height for more than 3 cm, frequent falls and previous fractures. 4. Hyperthyroidism and hyperparathyroidism, rheumatoid arthritis and the usage of corticosteroid therapy are the risk factors more incident in the examined patients with osteoporosis. 5. Smoking, early menopause, allergy to milk with no adequate substitution of calcium and insufficient exposition to sun rays with no adequate substitution of vitamine D are the risk factors more incident in patients with osteoporosis. 6. The largest contribution to the total makes positive family anamnesis to osteoporosis and fractures (20.99%), followed by body weight, height, Body mass index (19.03%), previos fractures, frequent falls and reduction in height for more than 3 cm (18.41%), smoking and insufficient physical activity (12.75%), allergy to milk and insufficient exposition to the sun (12.14%), early menopause (8.72%), hyperthyroidism and hyperparathyroidism, rheumatoid arthritis (7.93%). 7. By the analysis of all three goups of features giving the largest cintribution to the total, it has been determined that positive family anamnesis to fractures (37.7%), and body weight (31.3%), present the major risk factors for osteoporosis. 8. By mathematical processing we obtain the formula which can with the probability of 64.0% predict osteoporosis, and with the probability of 73.2% the absence of osteoporosis, which can, among other things in our research to some extent, require relative necessity for introduction of antiosteoporotic therapy. The formula is +.214 O +.562 F +.202 R +.223 P +.335 S +.493 T +.057 V +.020. 9. It is necessary to test the formula obtained in examined patients and continue the reseachment, on larger sample, of risk factors which have not shown statistic importance.
Ivana, Radić. "Gojaznost i fizička neaktivnost kao javnozdravstveni problemi odraslog stanovništva Vojvodine." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101648&source=NDLTD&language=en.
Full textObesity and physical inactivity are one of the most significant risk factors for chronic noncommunicable diseases, which are one of the most important public health problems in the world and also in our country. The aim of the study was to evaluate the prevalence of obesity and leisure time physical inactivity among the adult population of Vojvodina, and also to evaluate the association of demographic, socio-economic and behavioral factors with obesity and leisure time physical inactivity. The study is part of the National Health Survey of Serbia, a cross-sectional study conducted in year 2013 by the Ministry of Health of Republic of Serbia on a representative stratified two-stage sample. The study included 3337 participants aged 20 and over who resided in Vojvodina. The instruments were questionnaires designed in line with the European Health Interview Survey questionnaire, and data on body mass and body height were measured. Results showed that in year 2013 every fourth adult person in Vojvodina was obese, and every third overweight. There was no increase in prevalences compared to year 2000, although they remained high. Odds of obesity increased until age 75, and afterwards decreased. The highest odds of obesity were among persons who were married or living with a partner. Obesity was associated with socio-economic factors only among women. The predictors of obesity among women were: low level of education, low wealth index and unemployment/economical inactivity. Former smokers had two times higher odds of obesity, compared to smokers, while persons who consumed alcohol in the last 12 months had lower odds to be obese. Leisure time physical inactivity, as well as transport related physical inactivity were important predictors of obesity. Prevalence of leisure time physical inactivity was very high (89%). With increasing age, odds of physical inactivity increased. Predictors of physical inactivity were female gender, being married or living with a partner, low level of education and low wealth index. Smokers had two times higher odds of physical inactivity in comparison to nonsmokers, while persons who consumed alcohol in the last 12 months had lower odds of physical inactivity. Obese and physically inactive persons were more likely to assess their health as average, poor or very poor. Obese persons (regardless of the level of physical activity) had three and a half times higher odds of multimorbidity compared to persons with healthy weight who were physically active. Obese persons had four times higher odds of arterial hypertension and almost four times higher odds of diabetes. Obesity and physical inactivity are important public health problems among the adult population in Vojvodina due to high prevalences in population, especially among vulnerable groups, inequality in frequency among different socio-economic groups, preventability and association with poor health perception and chronic diseases.
Vladimir, Krstić. "Uticaj faktora rizika na povređivanje prednje ukštene veze kolena u toku sportskih aktivnosti." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=114831&source=NDLTD&language=en.
Full textThe study group consisted of 1247 respondents with anterior cruciate ligament injuries who were surgically treated in the period 2012-2017. at the Clinic for Orthopedic Surgery and Traumatology of the Clinical Center of Vojvodina. The objectives of the study were to determine the impact of sports activity levels and injury mechanisms on the occurrence of anterior cruciate ligament injuries, then the impact of external risk factors (type of sport, competition rank, type of surface, training or match, training period) on the occurrence of anterior cruciate ligament injuries and the influence of internal risk factors (gender, age, BMI) on the occurrence of injuries of this knee structure. Out of the total number of respondents 517 (41.5%) were active athletes, and 730 (58.5%) were recreational athletes. A significant majority in the observed group were men (82.6%), persons aged 16 to 25 years (62.6%) and normal BMI respondents (62%). Anterior cruciate ligament injury occurred in 504 of them (40.5%) during active sports, while injuries during recreational sports occurred in 741 respondents (59.5%). Among active athletes, more than two thirds competed at the international or national level- in the highest ranks of the competition. Contact collective sports (football, basketball and handball) were practiced by 77.9% of respondents. 22.1% of respondents practiced non-contact sports such as volleyball, martial arts sports and skiing. The largest number of injuries occurring while playing football (51.3%). Statistically significantly more injuries (both during active and recreational sports) occurred without direct contact (noncontact injuries-78,7% of total injuries number), with the largest number of injuries caused by changes in the direction and rhythm of movement. Among active athletes, most injuries occurred in matches (73.8%), followed by injuries in training (24.1%), while only 2.1% of respondents were injured in recreation. Significantly more injuries occurred in the middle of engaging in sports activity (47.4%) compared to injuries during the warm-up, beginning and end of sports activity. Injuries occurred significantly more often on grass (42%) and floor (28%) than on other types of surfaces. Most of the respondents were injured wearing sneakers while doing sports. There are significant differences in the context of injury depending on the gender of the respondents. A significantly higher percentage of women were injured during active sports, while men were more often injured during recreational sport activities. Women were most often injured in handball, men in football. Compared to men, injuries were much less common in women during direct contact, and when it comes to the place of injury, women were injured more often than men during training acitivities. Over 50% of women were injured on the floor, while the largest number of men were injured on the grass. Subjects with overweight were significantly more likely to be injured during recreational sport acitivites, while those with normal BMI were more likely to be injured during active sports. Risk factors for anterior cruciate ligament injuries are numerous and specific and there are risks for each population category, but it is noticed that in all sports, on all surfaces and in all subjects, injuries were most often caused by a noncontact injury mechanism. The formation of a Register of injuries would enable a better understanding of risk factors and their mutual influence, as well as the definition of the profile of persons at greatest risk for the occurrence of an anterior cruciate ligament injury. This would provide the necessary information for planning prevention programs aimed at reducing the risk of injury and would enable the implementation of appropriate selective prevention measures.
Jelena, Tomić. "Karakterizacija albumina i biohemijski aspekti kvaliteta pšenice (Triticum aestivum)." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=97038&source=NDLTD&language=en.
Full textIn this dissertation, the influence of variety and microclimatic conditions that prevailed during the two production years on the content and structure of wheat albumins were investigated; characterization of albumins was performed by Lab-on-a-Chip capillary electrophoresis; the proteolytic and α- amylolytic activity, as well as the content of free sulfhydryl and free amino groups were also determined; the rheological properties of dough were estimated using conventional methods for the assessment of flour technological quality and characterization of the final product- bread was performed. One part of the research covered the period of postharvest wheat and flour maturation. Heat stress was characteristic of both production years; however, in 2012, maximum temperatures exceeded 35 °C and the number of days with maximum temperatures above 30 °C was markedly higher than in the 2011 production year. These conditions have caused the changes in the composition and quality of protein and starch in wheat kernels. The albumin content of wheat flour samples from 2012 was significantly lower compared to 2011 production year. Results of proteolytic and amilolytic activities of wheat flour samples from two production years, showed that the values of these indicators were significantly lower for 2012 in relation to the 2011 production year, and that the enzyme activity is primarily varietal characteristic. The content of free sulfhydryl groups of wheat flour samples from the 2012 production year was significantly higher while the content of disulfide bonds was lower than in 2011. The content of free amino groups differed between samples from two production years. Differences in the amount of free amino content were evident between the varieties and between different treatments of gluten incubation. Significant differences between the values of the free amino groups measured after gluten incubation at 37 °C, indicate a different proteolytic activity of tested wheat flour samples. In comparison with the samples from the 2011 production year, samples from 2012 had significantly lower values of specific bread volume. The addition of double amount of its own albumins to the selected samples indicated that the flour samples from 2011 had a deficit of amylolytic enzymes and samples from 2012 had a deficit of proteolytic enzymes for achieving optimal technological quality.
Goran, Petković. "Дефинисање фактора који детерминишу техничку иновативност ученика средњих школа." Phd thesis, Univerzitet u Novom Sadu, Tehnički fakultet Mihajlo Pupin u Zrenjaninu, 2011. http://dx.doi.org/10.2298/NS20111019PETKOVIC.
Full textJedan od uslova uspešnog obrazovno-vaspitnog procesa i razvoja svakog pojedinca savremenog društva je tehnička kultura sa svim svojim programima, kako u osnovnoj tako i u srednjoj školi, koji su važan izvor znanja, sposobnosti i kreativnosti. Definisanjem faktora koji determinišu tehničku inovativnost učenika srednjih škola, dobija se odrednica u kom pravcu treba iči da se nivo tehničke inovativnosti podigne kod učenika koji pohađaju srednje stručne škole. Tehničko znanje i inovativnost, treba da podignu: nivo tehničkog obrazovanja učenika, operativnost i funkcionalnost u korišćenju tehničko-tehnoloških dostignuća, osposobni ih za kvalitetno, kreativno rešavanje tehničkih problema u svakodnevnom životu i radu.
Ljuba, Vujanović. "Kontaktna senzibilizacija kod obolelih od hronične venske insuficijencije." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2014. https://www.cris.uns.ac.rs/record.jsf?recordId=87660&source=NDLTD&language=en.
Full textDevelopment of allergic contact dermatitis as a complication of treatment of chronic venous insufficiency is well known. The aim of this study was to determine the incidence of eczematous contact sensitization in patients with chronic venous insufficiency, possible risks for the development of contact sensitization, and the correlation between disease duration and contact sensitization. The working hypothesis was that the incidence of contact sensitivity is significantly higher in individuals with chronic venous insufficiency than in those without chronic venous insufficiency, that they are at greater risk of developing contact sensitization, and that there is a positive correlation between the incidence of contact sensitization and the disease duration. The study included 266 patients. They were divided into two groups: the study group included patients with chronic venous insufficiency referred for allergy testing due to suspected contact dermatitis, and the control group included patients without chronic venous insufficiency patch tested for suspected contact dermatitis. The severity of chronic venous insufficiency was assessed by CEAP classification. Thereafter, each patient underwent patch testing. The research has shown that the incidence of contact sensitization among patients with chronic venous insufficiency was 49.3%. In these patients, the incidence of contact sensitization to the European standard battery of allergens was 31.55%; to the battery specific for chronic venous insufficiency it was 28.45%; to commercially available batteries of allergens of ubiquitous plants from the Compositae family it was 6.69%; and to originally prepared extracts of ubiquitous plants found in Vojvodina it was 6.11%. There was no statistically significant difference in relation to sex. The prevalence of contact sensitization in patients with chronic venous insufficiency was not significantly different from those without chronic venous insufficiency. Positive patch test reaction rates, confirming the existence of contact sensitization, were significantly higher in patients with chronic venous insufficiency. Patients with chronic venous insufficiency had a 2.45-fold higher risk for developing contact sensitization to two or more allergens, and a 3.69-fold higher risk for developing contact sensitization to five or more allergens compared to those without chronic venous insufficiency. There was a positive correlation between the incidence of contact sensitization and the duration of the disease.
Milena, Cvjetković. "Analiza ključnih faktora unapređenja poslovanja i konkurentnosti preduzeća." Phd thesis, Univerzitet u Novom Sadu, Tehnički fakultet Mihajlo Pupin u Zrenjaninu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104089&source=NDLTD&language=en.
Full textIn this paper conducted an analysis of the key factors of business improvement and competitiveness of domestic enterprises and on the basis of the results created a model whose application for domestic enterprises to improve their competitive position in the international market. The paper confirmed the importance of knowledge in the development of quality aspects and the impact of quality and knowledge on improving the business performance of companies.
Željko, Živanović. "Korelacija ultrazvučnih karakteristika ateroskleroze karotidnih arterija i prisustva kardiometaboličkih faktora rizika kod bolesnika sa ishemijskim moždanim udarom." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94884&source=NDLTD&language=en.
Full textINTRODUCTION: Atherosclerosis is the most common disease of carotid arteries, causing 20% of all ischemic strokes. Besides the degree of stenosis, certain characteristics of carotid plaques indicate an increased risk for stroke. Carotid ultrasound can reliably evaluate atherosclerotic changes in carotid arteries. Although the risk factors for atherosclerosis are the same as the risk factors for stroke, the presence of identical risk factors in patients with stroke does not necessarily mean the presence of the same degree of carotid atherosclerosis. AIM: To determine correlation of certain characteristics of carotid atherosclerosis detected by ultrasound with the presence of various cardiometabolic risk factors in patients with ischemic stroke. METHODS: The study included 120 patients with noncardioembolic ischemic stroke in the anterior circulation, who were divided into two groups; 60 with lacunar and 60 with nonlacunar brain infarction. The presence of cardiometabolic risk factors, such as hypertension, diabetes, hyperlipoproteinemia, smoking, obesity, metabolic syndrome, hyperhomocysteinemia, and inflammation, was evaluated in all patients. Data regarding blood pressure, glycemia, glycated hemoglobin, lipid status parameters, apolipoprotein (ApoAI and ApoB), lipoprotein a, body mass index (BMI), homocysteine, and C-reactive protein (CRP) were collected. Intima-media thickness (IMT), carotid plaque characteristics (morphology, surface) and the degree of stenosis were determined by carotid duplex ultrasound. Demographic characteristics, risk factors, biomarkers, as well as ultrasound characteristics of carotid atherosclerosis, were compared between patients with lacunar and nonlacunar stroke. Two-sample student t-test and χ2 test were used for comparisons. In order to assess the correlation of various risk factors and their biomarkers with different characteristics of carotid plaques, we used the Pearson correlation coefficient r and Cramer's V. Regression analysis was used to evaluate the association of risk factors and their biomarkers with various carotid atherosclerosis characteristics. RESULTS: More patients with lacunar stroke had hypertension (98.3% vs. 85%; p=0.021). Patients with lacunar stroke had higher BMI values (27.6 kg/m2 vs. 25.9 kg/m2; p=0.029), while patients with nonlacunar stroke had higher CRP values (16.4 mg/l vs. 6.8 mg/l; p=0.001). Demographic characteristics, other risk factors and their biomarkers, as well as carotid IMT were not significantly different between the two groups of patients. Patients with nonlacunar stroke had a higher degree of carotid stenosis (79.7% vs. 33.2%; p=0.0001) and a higher prevalence of heterogeneous plaques (73.3% vs. 35%; p<0.001), hypoechogenic plaques (51.7% vs. 16.7%; p<0.001), and plaques with irregular surface (81.7% vs. 21.7%; p<0,001). IMT was significantly (p<0.05) correlated with the age of patients (r=0.276), diabetes (Cramer’s V=0.236), metabolic syndrome (Cramer’s V=0.247), HDL cholesterol (r=-0.254), LDL/HDL (r=0.306), ApoA-I (r=-0.386) and ApoB/ApoA-I (r=0.359). The presence of a heterogeneous plaque was correlated with metabolic syndrome (Cramer’s V=0.246) ApoB (r=0.213), ApoB/ApoA-I (r=0.207) and elevated CRP (Cramer’s V=0.266). A plaque with irregular surface was correlated with elevated CRP (Cramer’s V=0.283). The degree of carotid stenosis was correlated with BMI (r=-0.180) and elevated CRP (Cramer’s V=0.301). The independent predictors of higher values of IMT were older age (β=0.230; p=0.006), ApoA-I (β=-0.244; p=0.008), and ApoB/ApoA-I (β=0.247; p=0.007). The predictors of the presence of a heterogeneous plaque were male gender (p=0.011; OR=3.425), ApoB (p=0.007; OR=8.972), BMI (p=0.0001; OR=0.380), metabolic syndrome (p=0.003; OR=4.555) and elevated CRP (p=0.018; OR=2.800). The predictors of the presence of a hypoechogenic plaque were ApoB (p<0.001; OR=29.2), BMI (p=0.02; OR=0.514), metabolic syndrome (p<0.001; OR=9.224) and elevated CRP (p=0.046; OR=2.659). Elevated CRP was the only independent predictor of a plaque with irregular surface (p=0.002; OR=3.203) and of a higher degree of carotid stenosis (β=0.270; p=0.002). CONCULSIONS: Although carotid stenosis is significantly more pronounced in patients with nonlacunar than those with lacunar noncardioembolic ischemic stroke, cardiometabolic risk factors, their biomarkers and carotid IMT do not differ significantly between the two groups of patients. In addition to stenosis, a presence of heterogeneous, hypoechogenic and irregular-surface carotid plaques indicates an increased risk for ischemic nonlacunar stroke. Among the cardiometabolic risk factors and their biomarkers, ApoAI and ApoB have the strongest association with carotid atherosclerosis. Apolipoprotein B and metabolic syndrome have the strongest association with a heterogeneous and hypoechogenic carotid plaque. Elevated CRP in patients with acute ischemic stroke may be a sign of carotid plaque destabilization and can indicate a significant carotid stenosis.
Marina, Karić. "Istraživanje novih modela simulacije procesa konzerviranja voća sušenjem." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2014. https://www.cris.uns.ac.rs/record.jsf?recordId=89542&source=NDLTD&language=en.
Full textThe thesis analyzes, on the basis of experimental data, convective drying of a sort of apple ina laboratory batch condensation drying plant designed especially for the laboratory researches. Theinfluence of process parameters on drying kinetics and quality of dried products is examined. For thispurpose a widespread sort of apple called „Red Delicious“ is chosen. It is cut into slices with thestarting and final moisture being about 87% and 7,5-8,5%, respectively.The relevance of certain factors and their effect on the duration of the process and parametersof the quality of dried products is determined by the method of planned experiment.The procedure of factor plans of the experiment is applied in order to obtain mathematicalmodels and graphical illustrations of the influences of process parameters on the change of measuredcharacteristic.Air temperature varies from 40 to 60ºC, while the flow speed is from 1 to 2 m/s and relativemoisture of air is in the range from 55 to 75%. The curves of drying speed are identified and thequality of dried apples is tested by instrumental analysis and consumers’ evaluation on the productacceptability. The obtained dried products are of high quality. Regression analysis of experimentaldata results in mathematical models describing dependance of output values on process parameterswhich define drying mode. Output values (responses) which are monitored and which represent thestate of the system are: duration of drying process, content of total acids expressed as malic acid andcontent of total sugars.On the basis of mathematical model, a detailed parameter analysis of the process is carriedout as well as the influence of individual input value on the process itself and it will provide theprediction of characteristics of dried products in various combinations of process parameters.Research results confirm that the increase of temperature and decrease of relative moisture ofdrying agents (air) significantly reduce the process of drying apple slices. The content of total acids issignificantly influenced by the speeds of air flow, interaction of flow speed and temperature,temperature and relative air moisture.The results of the research work are expected to produce mathematical models which aregood enough to achieve high quality dried products which can be applied as a basis for optimizationand control of drying processes in semi-industrial and industrial scopes.In addition to expected scientific achievement, the presented research is significant forobtaining dried products having defined qualities with regard to criteria of quality preservation,energy conservation and environment protection.
Tatjana, Mihajlov. "Спољашње вредновање као кључни фактор наставе и учења у основним школама." Phd thesis, Univerzitet u Novom Sadu, Filozofski fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104794&source=NDLTD&language=en.
Full textPotreba za vrednovanjem nastala je iz svesti o potrebi stalnog unapređivanja obrazovno–vaspitnog procesa, praćenja i sagledavanja jasne slike o školi.U okviru međunarodnog projekta „Praćenje kvaliteta rada škola“ pod pokroviteljstvom Vlade Kraljevine Holandije i uz podršku stručnjaka iz Inspektorata obrazovanja Ministarstva obrazovanja, kulture i nauke Kraljevine Holandije i Akademije međunarodnog Udruženja obrazovnih inspektorata zemalja Evrope (SICI Inspectors Academy–The Standing International Conference of Inspectorates), Republika Srbija je Zakonom o osnovama sistema obrazovanja i vaspitanja („Sl. Glasnik RS“, br.72/09) u obrazovni sistem unela novine s ciljem ostvarenja kvalitetnog, pravednog i efikasnog obrazovnog sistema, a koji predviđa mere koje se odnose na unapređivanje kvaliteta nastave, rada nastavnika i upravljanja školom, uvođenja novih mehanizama saradnje sa roditeljima i učenicima, kao i unapređivanje nadzora nad funkcionisanjem sistema u celini. Tome je posvećen i poseban član Zakona koji se odnosi na osiguranje kvaliteta rada ustanove (član 48. Zakona o osnovama sistema obrazovanja i vaspitanja). Prema ovom Zakonu vrednovanje kvaliteta rada ustanova podrazumeva dva oblika vrednovanja i vrši se na dva načina: kroz samovrednovanje i spoljašnje vrednovanje. Spoljašnje vrednovanje je vrsta eksternog nadzora, koji se vrši u okvirudefinisanih oblika kvaliteta, bazirano je na standardima, indikatorima i normama, i zasnovano je na dokazima koji su validni, autentični, pouzdani i konzistentni.Sistem vrednovanja koji podrazumeva spoljašnje vrednovanje doprinosi unapređivanju kvaliteta rada škole jer obuhvata vrednovanje svih vidova života i rada škole, a koji imaju uticaj na nastavu, učenje i rezultate učenja. U reformskom smislu, proces vrednovanja kvaliteta prati trendove reformskih procesa u Evropskim zemljama gde je ovaj proces stavljen u centar pažnje jer se vrši u okviru definisanih oblasti kvaliteta u skladu sa donetim standardima. Spoljašnje vrednovanje mapira jake i slabe strane škole i na osnovu njih usmerava akcije u područja gde je potrebno unaprediti kvalitet. U okviru spoljašnjeg vrednovanja škole, korisno je upotrebljavati rezultate dobijene u procesu samovrednovanja u cilju delotvornijeg planiranja posete školama i usmeravanja na određena područja spoljašnjeg vrednovanja. Ovi podaci treba da budu izvor za strukturiranje razgovora sa raznim učesnicima u obrazovnom procesu zbog efikasnije komunikacije. Koristeći izveštaje o samovrednovanju, spoljašnji evaluatori procenjuju kvalitet i mogu značajno doprineti njegovom daljem unapređivanju. Podaci koji se na taj način dobijaju omogućavaju redefinisanje Razvojnog plana škole, koji sadrži metode i postupke za ostvarivanje kratkoročnih i dugoročnih ciljeva, kao i praćenje i vrednovanje njegove realizacije.Istraživanja su pokazala da se najbolji efekti u unapređivanju kvaliteta rada škola postižu kombinovanjem unutrašnjeg i spoljašnjeg vrednovanja, što je cilj većine zemalja u Evropi. S obzirom da je ovo proces koji je tek otpočeo kod nas važno je ispitati promene koje nastaju u tom području, kako ga učesnici obrazovno-vaspitnog procesa shvataju i procenjuju i da li spoljašnje vrednovanje doprinosi kvalitetu rada škole.
Fonsén, P. (Päivi). "Prolyl hydroxylases:cloning and characterization of novel human and plant prolyl 4-hydroxylases, and three human prolyl 3-hydroxylases." Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514286735.
Full textTiivistelmä Prolyylihydroksylaasit ovat entsyymejä, jotka katalysoivat 3- ja 4-hydroksiproliinien muodostumisen valkuaisaineissa. Nykyisin tunnetaan ainakin kaksi prolyyli-4-hydroksylaasien (P4H) entsyymiperhettä: endoplasmakalvostossa sijaitsevat kollageeni prolyyli-4-hydroksylaasit (kollageeni-P4H:t) sekä vähähappisissa olosuhteissa aktivoituvaa transkriptiotekijää, hypoksiaindusoituvaa faktoria (HIF), hydroksyloivat prolyyli-4-hydroksylaasit (HIF-P4H:t). HIF-P4H:t sijaitsevat sytoplasmassa ja tumassa. Sekä kollageeni-P4H:t että HIF-P4H:t kuuluvat 2-oksoglutaraattidioksygenaasien laajaan entsyymiperheeseen. Nämä entsyymit tarvitsevat kosubstraateikseen rautaa, 2-oksoglutaraattia, happea sekä C-vitamiinia. Kollageeni-P4H:t hydroksyloivat kollageenien proliinitähteitä ja ovat avainasemassa kollageenisynteesissä, sillä muodostuneet 4-hydroksiproliinitähteet ovat ehdoton vaatimus stabiilille kollageenirakenteelle. HIF-P4H:t säätelevät puolestaan niiden geenien ilmenemistä, jotka ovat välttämättömiä elimistön selviytymiselle vähähappisissa olosuhteissa. HIF-P4H:t hydroksyloivat HIF-transkriptiotekijän α-alayksikön tiettyjä proliinitähteitä hapen läsnä ollessa, joka ohjaa α-alayksikön proteasomaaliseen hajotukseen eikä aktiivista HIF transkriptiotekijää siten muodostu. Alentuneessa happipitoisuudessa HIF-P4H entsyymien toiminta estyy, HIF stabiloituu ja aktivoi kohdegeeniensä toiminnan. Kollageeni-P4H entsyymejä pidetään erityisen sopivina lääkekehityksen kohteina fibroottisten ja HIF-P4H entsyymejä iskeemisten sairauksien hoitoon. Tässä väitöskirjatyössä on karakterisoitu aiemmin tuntematon ihmisen transmembraaninen P4H entsyymi (P4H-TM). Entsyymi osoittautui indusoituvan vähähappisissa olosuhteissa useissa solulinjoissa ja hydroksyloivan HIF-transkriptiotekijää muistuttaen siten HIF-P4H entsyymejä. Kuitenkin P4H-TM:n solulokalisaatio poikkesi HIF-P4H entsyymeistä, sillä sen havaittiin sijaitsevan endoplasmakalvostossa, katalyyttinen keskus kalvoston sisällä. Näiden tutkimustulosten valossa on oletettavaa, että tällä ihmisentsyymillä on HIF:n lisäksi toinen toistaiseksi tuntematon fysiologinen substraatti. Väitöskirjassa karakterisoitiin toinen lituruohon, Arabidopsis thalianan, P4H (At-P4H-2), joka poikkesi katalyyttisiltä ominaisuuksiltaan aiemmin karakterisoidusta lituruohon P4H:sta. Näiden kahden kasvientsyymin substraattivaatimusten poiketessa selvästi toisistaan, on niillä solussa todennäköisesti spesifiset tehtävät. At-P4H-2:n oletetulla substraatin sitomisalueella on jakso, joka on 37-prosenttisesti identtinen ihmisen P4H-TM:n kanssa, minkä vuoksi At-P4H-2:n karakterisoinnin uskottiin olevan tärkeä apuväline ihmisen P4H-TM:n tutkimuksissa. Selkärankaisilla prolyyli-3-hydroksylaaseja (P3H) tiedetään olevan kolme, ja myös ne kuuluvat 2-oksoglutaraattidioksygenaaseihin. 3-Hydroksiproliinia esiintyy ainoastaan kollageeneissa, erityisesti tyypin IV kollageenissa, joka on tyvikalvojen tärkeä rakennekomponentti. 3-Hydroksiproliinin merkitystä ei tunneta vielä tarkoin, mutta tyypin I kollageenissa 3-hydroksiproliinin puutoksen on osoitettu johtavan vaikeaan luustosairauteen, osteogenesis imperfectaan. Väitöskirjatyössä ihmisen P3H:t kloonattiin ja tuotettiin rekombinanttiproteiineina. Yhden isoentsyymin (P3H2) katalyyttiset ominaisuudet määritettiin ja sen osoitettiin ilmenevän erityisesti kudoksissa, joissa on paljon tyvikalvorakenteita
Čadová, Kateřina. "Faktory úspěšného prodeje - Vyhodnocení marketingového výzkumu a závislost ekonomických faktorů jako podpora manažerského rozhodování podniku." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2011. http://www.nusl.cz/ntk/nusl-222884.
Full textSandra, Jovanović. "Uloga inhibitora vaskularnog endotelnog faktora rasta u terapiji dijabetičnog makularnog edema." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=91828&source=NDLTD&language=en.
Full textDiabetic retinopathy is among the leading causes of acquired blindness in developed countries, as well as in developing countries. Diabetic retinopathy is one of the most frequent Diabetes Mellitus complications. Within diabetic retinopathy, diabetic macular edema (DME) is one of the earliest causes of the loss of visual acuity. Impaired vision causes decline in life quality in diabetic patients and it decreases theirworking ability. Up to this date, laser photocoagulation treatment has not givensatisfactory results. Recently, new promising treatment forms have emerged, including the intravitreal application of vascular endothelium growth factor (VEGF inhibitors), which lead to stabilization of the vessel wall. The aim of this study is to evaluate the efficacy of DME treatment consisting of intravitreal VEGF inhibitor application alone or as a part of combined treatment (intravitreal VEGF inhibitor plus laser photocoagulation) compared with conventional laser treatment alone. The effect of treatment was evaluated according to morphological parameters by measuring central macular thickness (CMT) in μm with optical coherence tomography, and according to functional parameter by visual acuity in log MAR scale. In this prospective randomized clinical trial, with minimum follow up of 6 months, in experimental group 51 patient, or 84 eyes were treated with bevacizumab (VEGF inhibitor) in 1.25 mg dosage, alone or in combination with laser. The mean reduction in was 139.15 μm, which was achieved with 2.46 doses on average. The difference between the final and initial CMT values after each dos age was tatistically significant.Edemas with high central macular thickness required high number of intravitealaplicatons and the reduction was higher. In our study, mean visual acuity improved significantly in 0.135 log MAR. In control group (50 patient, 92 eyes) treated with laserphotocolagulation alone, the effect on visual acuity and central acular thickness was not statistically significant. The treatment with bevacizumab alone or in combinedtreatment is more effective in treating DME than conventional macular laser treatment alone, from both - anatomical and functional perspective. The importance of this study is confirmation of the efficacy and safety of a new form of treatment and the introduction of a new protocol for the treatment of diabetic macular edema.
Mirjana, Jovančević Drvenica. "Validacija standardizovanih upitnika za procenu sindroma poremećaja disanja tokom spavanja." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=97036&source=NDLTD&language=en.
Full textSleep disordered breathing (SDB) includes a spectrum of diseases occurring due to an increased resistance in the upper airway, which affects sleeping. The major SDB subgroup is sleep apnea syndrome (SAS). SDB is present in 20% of the general population, and among the subjects with a moderate or severe SAS, 82% of males and 93% of females remain undiagnosed. Since polysomnography - the basic diagnostic method, requires a well-trained staff and adequate laboratory equipment, the need for a fast, efficient and cheap screening method in the diagnosis of SAS has breen imposed. Objectives of the study are to evaluate and translate the “STOP BANG“ questionnaire from English to Serbian, establish its specificity and sensitivity in relation to the apnea hypopnea index (AHI) values while diagnosing SAS in adults, and to assess the cumulative sensitivity and specificity of the “STOP BANG“ questionnaire and Epworth Sleepiness Scale. The investigation has been entirely carried out in the Lung Function and Sleep Medicine Centre of the Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica. The study cohort included 102 subjects who were all, having answered both questionnaires first, submitted to polysomnography. Thirty subjects were tested by the „STOP BANG“ questionnaire, and retested a month later. Results of the investigation show the male sex predominated in the study sample (69.6%). The subjects' mean age was 50.1±13.8 years. Most subjects had SDB (73.5%). The majority of ther subjects (30.4%) had a serious SDB form (AHI>30). Obstuctive disorders prevailed, registered in 66.7% of the study population. Excessive daily sleepiness, measured by the Epworth sleepiness scale, was registered in 58.8% of the examined subjects, correlating well to the disorder severity level (r=0.43). Sensitivity and specificity obtained for the „STOP BANG“ questionnaire amounted to 62.7% and 51.9% respectively. The „STOP BANG“ questionnaire was translated to Serbian first, followed by testing an retesting using the questionairre, providing no differences in the obtained answeres. The obtained cut-off value for the „STOP BANG“ questionnaire was 4.5, and the test sensitivity and apecificity for different SAS severity levels were satisfactory, amounting to 70.7%/66.7% for mild, 78.6% /60,9% for moderate, and 87.4%/50.7% for severe sleep apnea. The cumulative comparation of the two questionnaires has disclosed a better specificity of 85.2%, 76.1%, and 69.0%, but a worse sensitivity of 53.3%, 58.9%, and 71.0% for a mild, moderate and severe sleep apnea respectively in the group of subjects whose values for both questionnaires exceeded the cutoffs. In the group of subjects with one of the questionnaire values exceeding the cutoffs, a better sensitivity but a worse specificity were obtained related to only the „STOP BANG“ questionnaire. The investigation has established the screening method – the “STOP BANG“ questionnaire which (on the basis of the clinical symptoms, physical examination and present risk factors) stratifies the patients into the high risk group requiring urgent polysomnography and referral for further treatment, and to those requiring no polysomnography.
Mileretová, Eva. "Faktoring pohledávek." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-76213.
Full textMladen, Radišić. "Portfolio investitori u evropskim zemljama u tranziciji: procena rizika i potencijala rasta tržišta." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2011. http://dx.doi.org/10.2298/NS20110711RADISIC.
Full textmarkets investors. Comparison of six European emerging stock market indices and world’s the most important stock exchange index - the S&P 500, established a level of emerging markets price dependence on international investors with global market overview. The results obtained can be used as a basis for further research in the field by the academic community, as well as by professional investors in financial markets, to assist in making their investment decisions. Of particular interest is the possibility of applying the results in economic and financial decision making policy of the Republic of Serbia.
Milana, Rakić. "Diverzitet makrogljiva i njihova uloga u monitoringu stanja šumskih ekosistema Srbije." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110999&source=NDLTD&language=en.
Full textWithin the framework of this doctoral dissertation, monitoring of macrofungal communities, within 5 forest habitats on Vidlič, Kopaonik and Tara, was done. Mycodiversity was investigated from the morphological, functional and genetic point of view. Various classical methods used, enabled the assessment of the condition of macrofungal communities, as well as the observed forest habitats. Several statistical methods (PCA, PLS, CA and CCA) were used to analyze the composition of species within the mycocenosis, as well as the assessment of the effects of abiotic factors on the species richness and species composition within different functional groups.Some of the most represented species have been selected for molecular analyzes, which includedsequencing of the ITS region, the analysis of polymorphisms, as well as phylogenetic analyzes within the species/genus. In order to assess the pollution of habitats, the content of metals (atomic absorption spectrophotometry) and radionuclides (gamma spectrometry) was determined in the sporocarps of macrofungi and their substrate. The obtained results indicate that diversity of macrofungi reflects the state of the habitat itself and that long-term monitoring can indicate changes in it.
Dragana, Tegeltija. "Učestalost i tipovi mutacija receptora epidermalnog faktora rasta u invazivnim adenokarcinomima pluća." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=100677&source=NDLTD&language=en.
Full textEpidermal growth factor receptor (EGFR) belongs to the family of protein-tyrosin kinase family, whose activation is associated with the proliferation of malignant cells, invasion, inhibition of apoptosis, tumor angiogenesis and metastatic spread and thus plays an important role in carcinogenesis and tumor progression. Activated mutations take place around the catalytic tyrosine kinase domain. Biopsy, cytological and surgical specimens are used for the detection of EGFR mutations at the time of diagnosis of adenocarcinoma or carcinoma with an adenocarcinoma component, most reliably using a polymerase chain reaction. The fact that the application of molecular tyrosin kinase inhibitor therapy to patients with EGFR mutated lung adenocarcinoma improves the prognosis of the disease, there is resistance in certain types of EGFR mutations and connection with histopathological and immunohistochemical characteristics of tumor, that the bronchoscopic specimen is often the only specimen in which it is necessary to determine the molecular profile of the tumor, the primary objective of this thesis is to determine the frequency and type of EGFR mutations and their connection with the characteristics of adenocarcinoma. In order to realize this objective, the following secondary objectives have been set: to execute histopathological reclassification of lung adenocarcinoma based on the criteria set by the International Association for the Study of Lung Cancer, the American Thoracic Society and European Respiratory Society; determine the expression of TTF-1 in lung adenocarcinoma and connection with EGFR mutation status; determine the frequency, type and connection of EGFR mutations with predominant type of adenocarcinoma and confirm whether bronchoscopic biopsy may be a representative specimen for the determination of EGFR mutation status. Histopathological material of lung adenocarcinoma in surgical specimens is more heterogeneous in relation to biopsy specimens and such difference is statistically significant (p<0,001). Acinar predominant type is the most common in surgical and biopsy specimens with no statistically significant differences in the distribution of predominant type among them (p=0,65883). The predominant type in the primary tumor determines the predominant type in lymphatic metastases. EGFR mutations in the type of insertions on exon 21 and L858R mutations on exon 20 have been detected in three out of 60 (5%) of patients in five out of 120 specimens (three surgical and two biopsy samples), more often in women older than 60, smokers and in a solid predominant type. There are no statistically significant differences in the concentration of isolated DNA between EGFR mutated and wt EGFR adenocarcinoma in biopsy (p=0,132) and surgical specimens (p=0,641). The percentage of invalid results in determining the EGFR mutation status is higher in biopsy specimens compared to the surgical specimens. There is a statistically significant difference between the number of TTF-1 positive and TTF-1 negative adenocarcinoma (p<0,001), but not in the distribution of these patients according to gender (p=0,1231), average age, smoking habits (p=0,6488) and average tumor size (p-0,21). There is a positive correlation between TTF-1 positive expression and EGFR mutation status and therefore TTF-1 positive expression can be a predictor of positive EGFR mutation status. Bronchoscopic biopsy is a representative sample for the determination of EGFR mutation status because: most diagnostic biopsy specimens have more than 100 preserved tumor cells, there is no difference in the distribution of predominant types in relation to surgical specimens, EGFR mutations are detected in samples with less than 100 tumor cells and less than 20% of volume density of tumor tissue, the difference between the concentration of isolated DNA in EGFR mutated and wt EGFR adenocarcinoma in biopsy and surgical specimens is not statistically significant (p=0,132 and p=0,641).
Radmila, Velicki. "Utvrđivanje povezanosti mediteranskog načina ishrane i faktora rizika za nastanak akutnog koronarnog sindroma upotrebom „MedDiet” skora." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=106919&source=NDLTD&language=en.
Full textIntroduction: Cardiovascular diseases are the leading cause of morbidity and mortality of a modern society and are major public health problem in our country and also worldwide. Numerous studies suggest that the Mediterranean diet is associated with a reduction in the risk of developing cardiovascular diseases and other non-communicable diseases, as well as reduction in the overall mortality rate. Aim: To determine the degree of Mediterranean diet complience in subjects with acute coronary syndrome and subjects with an established risk for developing cardiovascular diseases, using validated Mediterranean diet score - MedDiet. Also, the aim of the study was to determine whether there is a significant difference in the values of the biochemical and clinical risk factors for the development of cardiovascular diseases between the two observed groups of subjects, and to determine the cut-off value of the MedDiet score between the favorable and unfavorable dietaty pattern for the development of acute coronary syndrome. Method: The study was conducted as an analytical cross-sectional study with enrollment of 294 subjects (146 women and 148 men), 30 to 82 years of age. The research was conducted during the period from 02/07/2016 until 03/16/2017. The first group of subjects consisted of patients diagnosed with acute coronary syndrome who were hospitalized at the Institute for Cardiovascular Diseases Vojvodina in Sremska Kamenica. The second group was comprised of subjects with established at least one major risk factor for the development of cardiovascular diseases but without clinically manifest coronary artery disease, who came to the medical examination of the Counseling Center for Proper Nutrition, Institute of Public Health of Vojvodina in Novi Sad. Among all participants in the study the following examinations were conducted: anthropometric measurements, arterial blood pressure measurements, appropriate biochemical analysis, ECG and surveys using a specially prepared questionnaire, which included MedDiet score - validated score system for assessing the degree of compliance with Mediterranean dietary pattern among subjects. Results of the study: The average value of the MedDiet score among subjects without acute coronary syndrome was 27.48 ± 6.59, while the average value of MedDiet score among subjects with acute coronary syndrome was 20.53 ± 4.01. The difference in MedDiet average values between the two groups of subjects was statistically significant (p = 0.029). By examining the predictive values of individual variables, it was shown that MedDiet score and fasting blood sugar were excellent markers for acute coronary syndrome (AUROC = 0.815, p<0.0005 and AUROC = 0.829, p <0.0005, respectively). The results of the study showed that the consumption of certain foods in the categories defined by MedDiet score (fruits, vegetables, poultry, and olive oil) can contribute to reduction of the risk for developing acute coronary syndrome. On the other hand, consuming red meat and meat products increased the risk of acute coronary syndrome. The established cut-off value for MedDiet score was 22.5. MedDiet score ≤22.5 practicaly indicated greater risk for the development of acute coronary syndrome, while MedDiet score> 22.5 indicated reduced risk for the development of acute coronary syndrome. Multivariate regression analysis showed that acute coronary syndrome is affected by the following risk factors: age 1,063 (1,270-1,819), male gender 4,071 (1,901-8,719), smoking 3,067 (1,322-7,114), body mass index 0,902 (0.839-0.970 ), systolic blood pressure 1.020 (1.003-1.037), fasting blood sugar 1.520 (1.025-1.101) and MedDiet score 0.783 (0.722- 0.849). Conclusion: Acute coronary syndrome is a major public health problem in the adult population of the Republic of Serbia, as indicated by its high prevalence. The results of the conducted research show that discrete increase in food intakes of foods which represent the basis of the Mediterranean diet, can lead to significant health benefits. These results can represent a framework for the development of a local scoring system for a non-mediterranean area, and also for creation of risk assessment model for acute coronary syndrome in our population.
Grünbaum, Maria [Verfasser]. "Expression des Tumor-Nekrose-Faktor-Rezeptor-assoziierten Faktors 1 in neoplastischen und reaktiven lymphatischen Läsionen / Maria Grünbaum." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2008. http://d-nb.info/102276151X/34.
Full textDušan, Škrbić. "Metabolički sindrom kod pacijenata sa hroničnom opstruktivnom bolesti pluća i bronhiektazijama." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94077&source=NDLTD&language=en.
Full textChronic inflammatory diseases of the respiratory organs are one of the leading morbidity and mortality causes all over the world. Despite the steady advance in scientific research, discovery of the disease-progression-contributing molecularand cellular mechanisms, introduction of novel prognostic biomarkers, new detection methods of infectious agents, application of new, potent bronchodilation, anti-inflammatory and anti-infectious drugs, a constant increase in the number of the affected and deceased from chronic pulmonary diseases has still been permanentlyevidenced in the 21st century. In a modern concept, the chronic obstructive pulmonarydisease (COPD) is understood as a heterogenous disorder associated with numerous comorbidities and systemic manifestations. Common risk factors represent the basis for concomitant chronic diseases to develop. Comorbidities and acute exacerbations contribute to the overall disease severity. As a COPD may develop extrapulmonary manifestations as well, each patient should be evaluated for systemic manifestations and comorbidities. The 2011 update of the „Global Strategy for Chronic Obstructive Lung Disease Diagnosis, Management, and Prevention –GOLD” lists the following comorbidities to be actively searched for: cardiovascular diseases, skeletal muscledysfunction, metabolic syndrome, osteoporosis, depression, and lung cancer. Bronchiectases represent a chronic lung disorder marked by VII excessively dilated bronchial lumen induced by weakened or destructed muscular and elastic components of the bronchial wall, reduced mucus clearance, and recurrent respiratory infections. Bronchiectases and COPD have some clinical features in common. The metabolic syndrome is a group of metabolic disorders which increase the risk of cardiovascular diseases and type 2 diabetes. In our investigation, we utilized the NCEP HATPIII definition of the metabolic syndrome based on the presence of three of five components: abdominal obesity (> 102 cm and >88 cm waist measure for males and females respectively), elevated (>1.7 mmol/l) triglyceride levels on an empty stomach, or a former history of the disorder treatment, reduced HDL cholesterol (< 1.03 mmol/l and <1.29 mmol/l for males and females respectively), or a former history of the disorder treatment, elevated systolic bloodpressure of >130 mmHg and/or diastolic blood pressure of > 85 mmHg, or a former history of treated hypertension, elevated glucose levels (>5.6 mmol/l), or already existing type 2 diabetes mellitus. The investigation has been carried out inthe Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, aimed at 1)establishing the frequency of the metabolic syndrome and its components among the patients with COPD and bronchiectases; 2) analyze and compare the frequency of metabolic syndrome and its components in the examined groups related to the patients’ sex, age, and COPD treatment length. The study included 193 subjects, 163 of whom suffered from COPD and bronchiectases, classified into three groups: COPD patients (n=55, Group 1), patients with bronchiectases (n=50, Group 2), and patients with concurrent COPD and bronchiectases (n=58, Group 3). The control group, designated as Group 4, included 30 subjects free of bronchiectases and COPD, so the total of 193 subjects were included in the investigation. The NCEP/ATP III criteriaestablished metabolic syndrome frequency among the patients with chronic respiratory diseases (COPD, bronchiectases, and concomitant COPD and bronchiectases) amounted to 37.3 % . The metabolic syndrome was more frequent in the patients with COPD and/or bronchiectases than in the control group patients free of any chronic respiratory disease. The metabolic syndrome was VIII confirmed in 38.2% of COPD patients, 54% of the patients with bronchiectases, and in 36.2% of thepatients with concomitant COPD and bronchiectases. The mean number of themetabolic syndrome components was 2.18 in COPD patients, 2.56 in patients withbronchiectases, and 2.1 in patients with concomitant COPD and bronchiectases. Themetabolic syndrome components were neither more frequent, nor statistically higher in the patients with concomitant COPD and bronchiectases as compared to the patients with a single presence of any of the two diseases. The difference in the single values of the metabolic syndrome components and the frequency of certain components in the examined groups of the patients with chronic pulmonary diseases was not statistically significant. Among the patients with chronic respiratory diseases, no correlation was observed between the metabolic syndrome frequency and the patients’ sex or age. The metabolic syndrome was not confirmed to be more frequent in males, or in >65 yr old patients, as compared to younger patients. Among COPDpatients, no correlation was registered between the metabolic syndrome frequency and COPD treatment duration. It was confirmed that the metabolic syndrome frequency was not higher in the patients with <5Hyear long COPD treatmentthan in those treated for COPD longer. On the basis of the results obtained in our investigation, we conclude that chronic respiratory diseases, COPD and bronchiectases, are the conditions with a higher cardiometobolic risk.
Ivana, Fratrić. "Uticaj organofosfornih pesticida na pojavu nespuštenog testisa." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110721&source=NDLTD&language=en.
Full textUndescended testis is the absence of testis in the scrotum on one or both sides. Risk factors for the occurrence of undescended testis include genetic predisposition, premature birth, low birth weight and prenatal exposure to endocrine disruptors or tobacco smoke. Endocrine disruptors are defined as exogenous substances that can affect homeostasis of the organism and the production of reproductive hormones. In this group are organophosphorus pesticides that are widely used in agriculture. Most of organophosphorus pesticides have anti-androgenic effect and with the fact that we live in a predominantly agricultural area, they are the focus of our interest. The aim of the research: The aim of this study is to determine the difference in exposure to organophosphorous pesticides using questionnaires created by standardized European model questionnaire QLK 4-1999-01422 in individuals who gave birth to a healthy male children and women who gave birth to children with undescended testis. In addition, the aim of this study is to determine and compare the value of metabolites of organophosphorus pesticides (dimethylphosphate, dimethyldithiophosphate, diethylphosphate, diethylthiophosphate and diethyldithiophosphate) in the urine of mothers who gave birth to male children with undescended testis and mothers who gave birth to healthy male children. Methodology: This work is randomized, prospective, clinical research conducted at the Clinic for gynaecology and obstetrics of the Clinical center of Vojvodina and the Department of Pharmacology and toxicology of the Faculty of Medicine, University of Novi Sad. This clinical research includes 50 new mothers that gave birth to male children with undescended testes (experimental group) and 53 new mothers that gave birth to healthy male children (control group) in the period from October 2012 to April 2018. During their stay at the maternity hospital the subjects were asked to fill out a questionnaire about habits and to give a urine sample for analyzing the level of metabolites of organophosphus pesticides. Urine samples were then prepared using the method described by Wu and associates 2010, and analyzed on gas chromatograph with a mass spectrophotometer Agilent 7890A brand. Results: Study groups do not differ according to the age of women (average age of control group is 29.41 ± 5.58 years, and experimental 30.54 ± 4.87 years). In both groups this was second pregnancy on average. The subjects did not distinguish either by the way of delivery. The average gestational weeks of pregnancy to childbirth was 39.45 ± 1.38 weeks for the control group and 39.20 ± 1.38 weeks for the experimental group, and birth weight of newborn was 3527.30 ± 470.16 g in control group and 3404.37 ± 508.20 g in the experimental group. There is no statistically significant difference in relation to the place of residence (50.9 % of the control group and 77.6 % of experimental live in the city), the living unit (67.9 % and 45.7 % of the control and experimental groups are living in the house) and the way of conception (6 % of experimental and 1.9 % of the control group reported IVF as a way of conception). Nearly half of both groups are smokers, and 32.7 % of women in the control group and 38.8 % in experimental smoked during pregnancy. Exposure to pesticides reported 50.9 % of mothers in control and 44 % of mothers in the experimental group. Professional exposure was reported by 3 control subjects and 2 subjects in experimental group. The subjects did not differ according to the origin of fruits and vegetables they were consuming, neither regarding the type of fruits they consumed during pregnancy. Average level of dimethylphosphate in control group was 5.604 ± 6.103 ug/L, and in experimental 4.815 ± 6.729 ug/l. Levels of diethylphosphate in control group were 0.408 ± 0.447 ug/L, and in experimental 0.461 ± 0.593 ug/l. DMDTP level in the control group was 0.431 ± 0.508 ug/L, and in experimental 0.547 ± 0570 ug/L, and the DETP was measured 0.403 ± 0.606 ug/L in control, and 0.725 ± 0.529 ug/L in the experimental group. These metabolites showed no statistically significant difference in the examined groups. Similar values are obtained for the adjusted values for creatinine level. Univariate regression analysis showed that the subjects who live in town are 3.3 times more likely to have child with undescended testis, and those who live in the apartment are 2.5 times more likely for the same outcome. Statistically significant difference was noticed in DEDTP level depending on the age of the subject and the living unit. Higher levels of DETP metabolites were detected in subjects that have been on hormonal therapy during pregnancy. The subjects who reported being exposed to pesticides during pregnancy had statistically significantly higher DMDTP values in relation to the subjects that were not exposed to pesticides. Similar results are obtained for the DEDTP level with higher levels in subjects owning pets. Statistically higher levels of DEP and DETP adjusted for creatinine were obtained in subjects that were not reporting eating apples, and higher levels of DEP and DEDTP were obtained in subjects that consumed raspberries and blackberries during pregnancy. Other groups showed no statistically significant difference between the study groups. Conclusion: Exposure of pregnant women to OP pesticides is not significantly greater in the group of mothers who gave birth to children with undescended testis in relation to exposure to OP pesticides in mothers of healthy male children. The level of OP metabolites (dimethylphosphate, dimethyldithiophosphate, diethylphosphate, diethylthiophosphate and diethyldithiophosphate) in the urine of mothers who gave birth to children with undescended testis is not higher in relation to the levels of OP metabolites (dimethylphosphate, dimethyldithiophosphate, diethylphosphate, diethylthiophosphate and diethyldithiophosphate) recorded in urine of mothers who gave birth to healthy male children.
Borislav, Jošanov. "Model vrednovanja mogućnosti uvodjenjakooperativnih otvorenih interorganizacionih informacionih sistema." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2001. https://www.cris.uns.ac.rs/record.jsf?recordId=73359&source=NDLTD&language=en.
Full textIn this master degree thesis interorganisational information sytems and factors for theirimplementation are described. Evaluation model for information systems from the aspects for their integration into cooperative, open interorganisational information systems is defined. This model is tested on the sample made from 50 organisations and conclusions from whole research are formulated.