Dissertations / Theses on the topic 'Face angle'
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Kumar, Sooraj. "Face recognition with variation in pose angle using face graphs /." Online version of thesis, 2009. http://hdl.handle.net/1850/9482.
Full textLam-Médioni, Régina. "Etude de l'angle goniaque sur des teleradiographies de 151 cas de faces longues en classe ii et iii d'angle." Paris 7, 1988. http://www.theses.fr/1988PA071052.
Full textTeixeira, Luis Fernando Lorenzi. "Estudo eletromiografico dos musculos orbiculares da boca e mentoniano, em portadores de maloclusão classe II, divisão 1 de Angle tratados com aparelhos ortopedico de Bimler." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/290923.
Full textDissertação (mestrado) - Universidade Estadual de Campinas . Faculdade de Odontologia de Piracicaba
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Resumo: Analisou-se o comportamento eletromiográfico dos músculos orbiculares superior e inferior da boca, porção medial e mentoniano em indivíduos jovens portadores de maloclusão Classe" divisão 1 de Angle com e sem o uso do aparelho ortopédíco funcional de BIMLER. Para tanto foram selecionados 5 pacientes sendo 1 do sexo masculino e 4 do sexo feminino com idade variando entre 10 e 12 anos. As atividades eletromiográficas destes músculos foram feitas em oclusão habitual e durante a deglutição de saliva nos perfodos de 18 hora, 1 semana, 1 mês, 3 meses e 6 meses. Os dados obtidos foram submetidos à análise de variâncía e para a comparação das médias duas a duas foi usado o teste de Tukey. Foram feitas também distribuição de frequências baseadas na escala de níveis de intensidade em microvolts segundo BASMAJIAN ( 1974 ). Os resultados revelaram que, existem diferenças no foncionamento dos músculos orbiculares da boca, porção medial, segmento superior e inferior entre os indivíduos classe li, divisão 1 de Angle durante o uso do aparelho; o segmento inferior tem uma participação mais efetiva em relação ao músculo orbicular superior, tanto em oclusão habitual quanto em deglutiçAo de saliva; durante a deglutlção de saliva os pacientes apresentaram uma atividade muito forte dos músculos mentoniano e segmento Inferior do orblcular da boca. Os músculos estudados revelaram, que em oclusão habitual e com o aparelho, as suas atividades- elétricas aumentam no 1° mês e diminuem significativamente no 3° e 6° mês de uso. Os pacientes sem o uso do aparelho funcional de BIMLER sempre mostraram que os potenciais de ação são menores que aqueles verificados com o aparelho, em todos os períodos estudados. Existe uma tendência de adaptação da atividade elétrica dos músculos peribucais ( orbiculares superior e inferior e mentoniano ) após o 6° mês do uso do aparelho funcional de BIMLER.
Abstract: Analysis of eletromiographic function of the mouth superior and inferior orbicular muscles, middle portion and mentonian in young patients with malocclusion class li, division 1 according to Angle with and without an ortopedic functional device of BIMLER. For This purpose 5 patients were selected, 1 male and 4 female with ages between 10 and 12. Muscular eletromiography activities were measured in usual oclussion and while swallowing saliva in the periods of 1 day, 1 week, 1 month, 3 months and 6 months. Data were submitted to varation analysis and results compared two by two according to Tukey. Iso the frequency distribution based in a intensity levels scale in microvolts according to Basmajian (, 1974 ) was made. Results showed significant differents in the activity of moutt1 orbicular muscle, middle portion, superior and inferior segments among the patients class 11, division 1 according to Angle while wearing the device, the inferior segment has a more effective function in relation to the superior orbicular muscle, as in usual occlusion as while swallowing saliva; in this period patients showed a very strong mentonian muscle and inferior segment of mouth orbicular activity. The studied muscles showed that in usual occlusion and with the device, electrial activltjes increase in the first month and decrease a lot in the 3rd and 6th month of use. Patients IIÍthout the BIMLER functional device showed action potentials smaller tha" the ones with the device, in ali the periods studied. There is a tendency to adapt the electrial activity from peribucal muscles ( superior and inferior o,picular and mentonian ) after the 6th month of use of the BIMLER functional device.
Mestrado
Fisiologia e Biofisica do Sistema Estomatognatico
Mestre em Ciências
Takalimane, Motena. "Evaluating the influence of lifter face angle on the trajectory of particles in a tumbling mill using PEPT." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13374.
Full textThe work performed in this thesis was aimed at evaluating the influence of lifter face angle on the charge kinematics for a laboratory scale mill. The study involved tracking a single particle representing the ensemble using the Positron Emission Particle Tracking (PEPT) to obtain the location of the particle with time. The particle was radiated with a radionuclide; ⁶⁸8Ga, which has a half-life of 68 minutes. The objectives of the study involved tests with different lifter face angles at different mill speeds and volumetric mill filling. After performing the tests the data was analysed to obtain probability density distributions for each test conditions from key charge descriptors. Charge descriptors such as the Centre of Circulation (CoC), shoulder angle, toe angle, the free surface and also kinematic information such as the velocity profile along a carefully chosen radial line from the centre of the mill that passes through the CoC were obtained. The time averaged velocity data was used when assessing the influence of the lifter face angle on the velocity profile. The results showed notable effects of lifter face angle on charge characteristics. No real definitive trend was observed for the CoC as the lifter face angle was altered at all mill speed and filling conditions. However, the CoC showed an outward shift toward the mill shell with an increase in mill speed but an inward shift toward the mill centre with increase in charge filling degrees. Mill speed is expected to cause a load expansion as the charge approaches centrifugation.
Machado, Daniele Teixeira. "Estudo cefalométrico das alterações das alturas faciais anterior e posterior em pacientes leucodermas com má oclusão de classe II, 1ª divisão de Angle, tratados com e sem extração de quatro primeiros pré-molares." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/25/25134/tde-30092005-093253/.
Full textThe cephalometric changes of anterior and posterior facial heights, in the Class II, Division 1 treatment, were compared among three different groups of patients: 4-premolar extraction, non-extraction and control. Each test sample consisted of 22 patients from whom lateral headfilms were obtained, either at the beginning or in the end of the treatment. Fourteen compatible subjects, comprising the control group, had their radiographs taken accordingly, at this same time interval. The one-way ANOVA was used to identify differences among the groups regarding the observed variables. As a result, significant differences for the anterior and posterior facial heights were not statistically detected among the groups. Based upon this methodology, no significant influence of the orthodontic treatment therapy was revealed over the facial heights, but rather similar behavior, in all groups, toward increasing the LAFH, UAFH, TAFH, PFH, AFH, TPFH and CF-Go. The rate between the TPFH and the TAFH exhibited an increase in groups I and III. In all three groups, the vertical drift of upper and lower first molars were similarly modified, producing a significant extrusion of these teeth, mainly in the lower arch of the treated sample. Sagital dentoalveolar changes, regardless of the group, consisted of mesial movement of all first molars. The largest mesial movements, however, were found to occur in the 4-premolar extraction and in the control groups.
Carvalho, Mariana Helena Silva. "AVALIAÇÃO DO PADRÃO ESQUELÉTICO VERTICAL DA FACE NA OCLUSÃO NORMAL NATURAL E NAS MALOCLUSÕES DE ANGLE, E SUA CORRELAÇÃO COM A SÍNFISE MANDIBULAR." Universidade Metodista de São Paulo, 2011. http://tede.metodista.br/jspui/handle/tede/1204.
Full textThe purpose of this study was to evaluate cephalometrically, the vertical facial skeletal pattern in subjects with natural normal occlusion and different malocclusions, correlation with the mandibular symphysis and evaluate sexual dimorphism. The sample consisted of 200 cephalometric radiographs divided in five groups based on occlusion type: group A, patients with natural normal occlusion and groups B, C, D and E, patients with malocclusions, each group being divided equally by sex and mean age between 13 and 16 years old. The sample was classified into three morphological patterns of vertical face, according to the facial height ration (FHR), proposed by SIRIWAT & JARABAK or Quotient Jarabak in: Hyperdivergent, Neutral and Hypodivergent. It was used the GoMe.VT variable, from VIGORITO analysis to assess the symphysis inclination and its correlation with the vertical facial patterns. After data collection and statistical tests evaluation; q-square test, "T" Student test and Pearson correlation, it was concluded that Hypodivergent was the most frequent in all patients studied, with 70%, and the greater frequency of this pattern was found in Class II malocclusion, division 2, with 87,5%, prevalence of some other existing standards in different classes of occlusions. We found a positive correlation between the inclination of the mandibular symphysis and Quotient Jarabak only for malocclusion Class I and Class III malocclusion. There was no significant statistical difference between the sexes and the morphology classification when the five groups were compared, however, when the groups were analyzed separately, significant differences were found between the sexes.
O propósito deste estudo foi avaliar cefalometricamente, o padrão esquelético vertical da face em indivíduos com oclusão normal natural e nas diferentes maloclusões e sua correlação com a sínfise mandibular, além de avaliar a presença de dimorfismo sexual. A amostra foi composta de 200 telerradiografias cefalométricas, divididas quanto ao tipo de oclusão, em cinco grupos: grupo A, com pacientes portadores de oclusão normal natural e grupos B, C, D e E, com pacientes portadores de maloclusões, sendo cada grupo, dividido igualmente quanto ao sexo e apresentando idade média entre 13 e 16 anos. A amostra foi classificada em 3 padrões morfológicos verticais da face, de acordo com o índice da altura facial (FHR), proposto por SIRIWAT & JARABAK ou Quociente de Jarabak, em: Hiperdivergente, Neutro e Hipodivergente. Foi utilizada a variável GoMe.VT, da análise de VIGORITO, para avaliar a inclinação da sínfise e sua correlação com os padrões verticais faciais. Após a coleta de dados e da avaliação dos testes estatísticos; qui-quadrado, teste t de Student e da correlação de Pearson, concluiu-se que, o padrão Hipodivergente em todos os pacientes estudados foi o mais frequente, com 70%, sendo que a maior frequência deste padrão foi encontrado na maloclusão Classe II, divisão 2, com 87.5%, existindo outras prevalências de alguns padrões em diferentes classes de oclusões. Foi encontrada uma correlação positiva entre a inclinação da sínfise mandibular e o quociente de Jarabak apenas para a maloclusão Classe I e maloclusão Classe III. Não houve diferença estatisticamente significante entre os sexos e a classificação da morfologia quando comparados os cinco grupos, porém, quando os grupos foram analisados separadamente, foram encontradas diferenças significantes entre os sexos.
Simões, Roberto Cuchiara. "Correlação entre a atividade eletromiográfica dos músculos elevadores e depressores da mandíbula e as dimensões verticais da face em indivíduos com maloclusão classe II, divisão 1 de Angle / Roberto Cuchiara Simões ; orientador, Orlando Tanaka, co-orientadora, Michelle Santos Vianna." reponame:Biblioteca Digital de Teses e Dissertações da PUC_PR, 2004. http://www.biblioteca.pucpr.br/tede/tde_busca/arquivo.php?codArquivo=301.
Full textInclui bibliografia
O objetivo deste estudo foi analisar a atividade eletromiográfica (EMG) dos músculos masseter direito, temporal direito (porção anterior) e supra-hióideos e relacioná-la com as dimensões verticais da face em 17 indivíduos do gênero masculino e 22 do gêner
El, Seuofi Sherif M. "Performance Evaluation of Face Recognition Using Frames of Ten Pose Angles." Youngstown State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1198184813.
Full textHotař, Petr. "Reologické vlastnosti asfaltových pojiv." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226951.
Full textAraujo, Lana Beth Ayres Franco de. "The autobiographical project of Soveida Dosamantes in Face of an angel, by Denise Chávez." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6863.
Full textThe present dissertation aims to investigate the collective hue of Face of an angel, a fictional autobiography by Mexican American writer Denise Chávez. Therefore, this research intends to discuss the Chicano society described under the lens of its narrator/protagonist, Soveida Dosamantes, investigating it since the historical process it resulted from, moving to the iniquity between mens and womens roles, and finally reaching the self-referential discourse with which the narrator/protagonist represents the cultural environment she is inserted in. Before the narrative itself, the reader is presented to the narrator/protagonists genealogic tree, signaling that what is going to develop throughout the novel is a family saga. Thus, Soveida Dosamantes makes use of her domestic ambience and also the community of the fictional town of Agua Oscura, her homeland, as the cutout of a major social framework. Employing autobiographical discourse, the narrator/protagonist created by Denise Chávez exposes the ills of a community that, as a product of colonialism and neocolonialism, has lost its cultural identity. In Face of an Angel, by means of the narrator/protagonists first person account, Denise Chávez reproduces the ethos she was born and grew up in. Endowing Soveida Dosamantes with autobiographical components such as complicated family relations, native women characters who work as gatekeepers of ancestral practices erased by European domination, as well as men characters who mask frailty underneath the appearance of strength and power, Chávez represents in Face of an angel a microcosm of a group which little by little has been subverting the official discourse and gaining terrain in the U.S. political and social panorama
Desnoix, Emeric. "L'entreprise face à la justice pénale : étude comparée du droit français / droits anglo-saxons." Tours, 2005. http://www.theses.fr/2005TOUR1004.
Full textThere is serious concern about the criminality of business enterprises. Indeed, this issue relates to numerous offences : white collar crime, health and safety offences, matters of pollution, corporate fraud, and also conventional crime (such as manslaughter). The aim is to study how the authorities enforce the criminal law, and how the culpable agent is to be identified within corporation. It is then necessary to see how he can be made criminally responsible for his acts, and finally sanctioned. In particular, this analysis encompasses both corportate and individual liability. In various aspects, corporate crime contravenes may conventional criminological principles and regulations, some of which have thefore been adapted (e. G. Rules attributing blame to the offender). Thus, the legal responses to corporate wrongs actually modify the way in which the criminal law conceptualizes the corporation itself
Oliveira, Pablo Gustavo de. "Ângulo de fase como indicador de desfechos negativos em pacientes cirúrgicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/61738.
Full textIntroduction: Electrical Bioimpedance (BIA) is an easy to use, fast, inexpensive, noninvasive and highly reproducible used to verify the changes in body composition. The Phase Angle (PA), obtained by BIA reflects the relative contribution of fluid and membranes for the human body, being associated as a prognostic marker in various clinical situations. Objectives: To evaluate the AF as an indicator of negative outcomes in surgical patients. Methodology: We studied patients aged 18 to 80 years at the Hospital de Clínicas de Porto Alegre with indication of elective surgery. Evaluations were performed at admission, 48 and 72 hours after surgery. Body weight, height and Body Mass Index (BMI), nutritional status by Subjective Global Assessment (SGA) and Phase Angle through the BIA. Results: According to BMI, 59.2% of patients were classified as eutrophic, 3.5% moderately malnourished and 37.3% had some degree obesity. The assessment by SGA found that 76.1% of patients were eutrophic, 23.2% moderately malnourished and 0.7% severely malnourished. The low values obtained for the AF in three evaluations were not presented as indicators of negative outcomes in surgical patients. Conclusions: AF is not an indicator to show negative outcomes in surgical patients.
Armond, Andrew D. Wood Ralph C. "The Anglo-Catholic quality of Christina Rossetti's apocalyptic vision in The Face of the Deep." Waco, Tex. : Baylor University, 2006. http://hdl.handle.net/2104/4203.
Full textSpicer, Charles. "'Ambulant amateurs' : the rise and fade of the Anglo-German Fellowship." Thesis, Institute of Historical Research (University of London), 2018. http://sas-space.sas.ac.uk/9193/.
Full textLandázuri, Denise Rocha Goes [UNESP]. "Alterações cefalométricas do perfil facial decorrentes do crescimento natural e induzidas pelo aparelho de Herbst no tratamento da classe II divisão 1, em fase pré-puberal." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/88698.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O objetivo deste estudo cefalométrico foi avaliar as alterações no perfil facial decorrentes do crescimento natural e induzidas pelo uso do aparelho de Herbst no tratamento da má oclusão Classe II divisão 1 de Angle. A amostra foi constituída por dois grupos, com idades óssea e cronológica equivalentes, e, portanto, pertencentes aos estágios 1 e 2 de maturação esquelética (CVM). O grupo experimental foi constituído por 20 pacientes (12 meninos e 8 meninas), com média de idade inicial de 9,3 anos, que receberam tratamento com o aparelho de Herbst por 7 meses. O grupo controle foi constituído por 16 indivíduos (9 meninos e 7 meninas), com média de idade inicial de 9,1 anos, não tratados ortodonticamente e com características esqueléticas e dentárias semelhantes ao grupo experimental, derivados dos arquivos de documentações do Burlington Growth Centre da Faculdade de Odontologia, Universidade de Toronto, Canadá. Para avaliação das mudanças no perfil facial foram utilizadas telerradiografias em norma lateral iniciais e após 7 meses de tratamento no grupo experimental, e no grupo controle as radiografias foram tomadas anualmente e convertidas em 7 meses para efeitos de comparação. Os dados obtidos foram submetidos à análise estatística, realizada com teste t de Student, com nível de significância de 5%. Os resultados indicaram que o aparelho de Herbst promoveu uma redução significante da convexidade do perfil facial esquelético e de tecidos moles, aumento significante do ângulo mentolabial, além de demonstrar tendência à abertura do ângulo nasolabial. Alterações estatisticamente significantes como o aumento da altura facial anterior inferior, a retrusão do lábio superior e a protrusão do lábio inferior, assim como o aumento em comprimento deste, também foram observadas. Pode-se concluir que o uso do aparelho de Herbst induziu efeito favorável...
The purpose of this cephalometric study was to evaluate the facial profile changes due to natural growth and induced by the Herbst appliance on treatment of Angle’s Class II division 1 malocclusion. The sample consisted of two groups, matched according to osseous and chronological ages, and therefore classified as stages 1 and 2 of skeletal maturity (CVM). The experimental group consisted of 20 patients (12 boys and 8 girls), initial mean age of 9.3 years, which were treated with the Herbst appliance for 7 months. The control group consisted of 16 individuals (9 boys and 7 girls), initial mean age of 9.1 years, not treated orthodontically and with skeletal and dental characteristics similar to the experimental group, originally from Burlington Growth Centre, Faculty of Dentistry, University of Toronto, Canada. For the analysis of facial profile changes, initial and 7-month treatment follow-up lateral cephalograms were obtained for the experimental group, and for the control group the radiographs were taken annually and converted to 7 months for comparison. The data obtained were submitted to statistical analysis, performed with Student’s t test, at significance level of 5%. The results showed that the use of the Herbst appliance promoted a significant reduction of skeletal and soft tissue facial profile convexity, a significant increase of the mentolabial angle, as well as demonstrating tendency to open the nasolabial angle. Statistically significant alterations as the increase of the anterior facial height, the upper lip retrusion and lower lip protrusion, as well as the increase on its length, were also observed. It can be concluded that the Herbst appliance had a favorable effect on facial profile change, which became less convex, by acting mainly on the lips and the mentolabial areas.
Sanders, E. Randall. "Determining duty the fate of Anglo-Protestant Indian missions after the Great Awakening /." Theological Research Exchange Network (TREN), 2007. http://www.tren.com/search.cfm?p088-0185.
Full textGrataloup-Crabbie, Anthony. "Le monde libéral et capitaliste Anglo-Saxon face à l’émergence de la société civile et des mouvements altermondialistes." Paris 4, 2006. http://www.theses.fr/2007PA040097.
Full textThe “liberal” Globalisation, primarily of Anglo-Saxon inspiration, is not a new world phenomenon. International Trade has always been a source of profits for the company and those who worked for it. However, today’s Globalisation, shows a much less idyllic aspect, namely its huge impact on Civilisation and its environment. This is characterised by the impressive deterioration of the concept of Humanity to the benefit of the Homo Oeconomicus, individual whose search is profit at all costs. Multinational corporations, helped by ultra powerful media, are henceforth richer than States, consisting of a new phenomenon influencing their political, economic and especially social decisions. Unregulated finance controls considerable money and constitutes a risk for the stability of States, in particular the poorest ones (those of the “Southern” world). Today, strong reactions emerge from all parts of the world, creating a sort of universal collective conscience named Civil Society and Anti-Globalisation Movements. This kind of “New Universal Fraternity” –often represented by young people resulting from all socio-economic strata— uses effective means namely the new media and information technologies with its supreme symbol called the Internet. This thesis work deals with the issue of Civilisation in the 21st century vis-à-vis modern information (or misinformation) technologies on a worldwide scale
Goodlett, Sean Campbell. "The origins of celebrity : the eighteenth-century Anglo-French press reception of Jean-Jacques Rousseau /." view abstract or download file of text, 2000. http://wwwlib.umi.com/cr/uoregon/fullcit?p9987425.
Full textTypescript. Includes vita and abstract. Includes bibliographical references. Also available for download via the World Wide Web; free to University of Oregon users.
Freitas, Karina Maria Salvatore de. "Estudo da recidiva do apinhamento ântero-inferior de casos tratados ortodonticamente sem extrações no arco inferior e mecânica Edgewise, na fase pós-contenção." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/25/25134/tde-14122004-112359/.
Full textOne of the most important objectives of Orthodontics is treatment stability. However, after many decades of research there is a consensus that stability of the aligned teeth is variable and largely unpredictable. Considering the great importance that clinical orthodontists place on the ability to predict when posttreatment changes are prone to occur, it was decided to evaluate the relapse of mandibular anterior crowding. The experimental sample consisted of 40 patients, of both gender, presenting with either Class I or II malocclusions, treated without extractions in the mandibular arch with Edgewise mechanics. The lateral cephalogram and dental casts of each patient were evaluated at three different stages: pretreament, posttreatment and after a mean postretention period of 5 years. The relapse of mandibular anterior crowding was assessed and associations between this relapse and the following factors were investigated: increase in intercanine and intermolar distances, increase in arch length, gender, extractions in the upper arch, interproximal stripping, type of malocclusion, craniofacial growth pattern, degree of initial mandibular anterior crowding, protrusion of the lower incisors consequent to treatment, final position of the lower incisors, treatment time and retention time. The data were evaluated by the Mann-Whitney test, and the mandibular anterior crowding was measured by the Little irregularity index. Results demonstrated that the relapse of mandibular anterior crowding occurred in most of the patients. However, the mean relapse amount was relatively small (26,54%). The male patients showed more mandibular anterior crowding in the pretreatment and postretention periods. The mean relapse amount was greater in the male patients, but not statistically significant. The group with Class II malocclusion and the group with vertical craniofacial growth pattern presented more relapse than the other groups, but not statistically significant. The group with the smaller amount of initial crowding demonstrated a statistically significant greater relapse than the other groups. Therefore, it was concluded that the degree of initial crowding was associated with the relapse of mandibular anterior crowding. The group with greater retention time presented less relapse, but not statistically significant. The other evaluated factors did not present any association with the relapse of mandibular anterior crowding.
Teodoro, Joana Teresa Guimarães [UNESP]. "Avaliação da efetividade da protração maxilar com ancoragem intrabucal para correção da má oclusão classe III durante a fase de crescimento craniofacial." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/157358.
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Introdução: O tratamento da má oclusão Classe III em pacientes em crescimento é um desafio pela estabilidade e colaboração do paciente. A etilologia da Classe III pode ser por natureza esquelética, genética e fatores ambientais. Os aspectos encotrados são deficiência maxilar com mandíbula bem posicionada ou protruída da sua base ósseas, maxila bem posicionada com prognatismo mandibular ou a combinação de retrognatismo maxilar com prognatismo mandibular. A deficiência de maxila é frequentemente encontrada em pacientes com má oclusão Classe III sendo o tratamento indicado, a protração maxilar. Material e métodos: Foram selecionadas 8 crianças na faixa etária de 7 a 10 anos, com características faciais e esqueléticas para Classe III. Como terapêutica ortopédica, foi utilizado o aparelho expansor tipo Hyrax modificado com ganchos soldados na mesial dos segundos molares decíduos e primeiros molares permanentes. Para o inferior foi um arco lingual de Nance modificado com ganchos soldados na altura de caninos e segundos molares decíduos. O protocolo para disjunção maxilar com dois quartos de volta por dia em média de 7 a 10 dias, em seguida indicado o uso de elásticos para Classe III 3/16” de força média na primeira semana e a partir da segunda semana, elásticos 1/8” médio de cada lado da arcada até a correção da mordida cruzada anterior. Para a análise dos efeitos dentoesqueléticos foram usadas as teleradiografias iniciais (T1), as obtidas após a correção da MCA (T2) e as telerradiografias realizadas após três meses após a correção (T3). Resultados: De acordo com a mecânica proposta e metodologia aplicada, conclui-se que, no Aspecto dentoalveolar: 1.PlMx – constante, 1.NA – favorável, 1.NB – favorável, 1/.NS – constante, IMPA – favorável, 1/./1 - desfavorável. Posição da bases ósseas: SNA – desfavorável. SNB – favorável, Nperp-Pog – favorável, Nperp-A - constante. Posição maxilo mandibular: ANB – favorável, CoGn – favorável, Co-A – favorável. Análise vertical: AFAI – constante, FMA – desfavorável, SN.Go-Gn – favorável. Análise do perfil facial: ANL – favorável. Conclusão: A correção da Classe III provocou alterações dentoalveolares principalmente a vestibularização dos incisivos superiores; alterações esqueléticas sendo predominante a manutenção da posição mandibular e o perfil se modificou tornando-se mais convexo.
Introduction: Treatment of Class III malocclusion in growing patients is a challenge for patient stability and collaboration. Class III etiology may be by skeletal, genetic, and environmental factors. The aspects found are maxillary deficiency with well positioned or protruding mandible of its base bone, maxilla well positioned with mandibular prognathism or the combination of maxillary retrognathism with mandibular prognathism. Jaw deficiency is often found in patients with Class III malocclusion and the indicated treatment is maxillary protraction. Material and methods: We selected 8 children aged 7 to 10 years, with facial and skeletal characteristics for Class III. As an orthopedic therapy, the modified Hyrax type expander was used with welded hooks in the mesial of the second deciduous and first permanent molars. For the lower one was a lingual arch of Nance modified with welded hooks at the height of deciduous canines and second molars. The protocol for maxillary disjunction with two quarters of a turn in a mean of 7 to 10 days, then indicated the use of Class III 3/16 "elastic force in the first week and from the second week, elastic 1 / 8 "on each side of the arcade until the correction of the anterior crossbite. The initial teleradiographs (T1), those obtained after correction of the MCA (T2) and the cephalograms performed three months after the correction (T3) were used to analyze the dento-skeletal effects. Results: According to the proposed mechanics and applied methodology, it is concluded that, in the dentoalveolar aspect: 1.PlMx - constant, 1.NA - favorable, 1.NB - favorable, 1 / .NS - constant, IMPA - 1 /./ 1 - unfavorable. Position of the bony bases: SNA - unfavorable. SNB - favorable, Nperp-Pog - favorable, Nperp-A - constant. Mandibular maxillary position: ANB - favorable, CoGn - favorable, Co-A - favorable. Vertical analysis: AFAI - constant, FMA - unfavorable, SN.Go-Gn - favorable. Analysis of facial profile: ANL - favorable. Conclusion: Class III correction caused dentoalveolar changes, mainly vestibularization of maxillary incisors; skeletal changes being predominant the maintenance of the mandibular position, and the profile changed becoming more convex.
Landázuri, Denise Rocha Goes [UNESP]. "Avaliação das mudanças tegumentares naturais e induzidas pelo aparelho de Herbst, em indivíduos com má oclusão classe II, divisão 1, na fase da dentadura mista." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/104501.
Full textO objetivo desse estudo cefalométrico prospectivo foi avaliar a influência do tratamento precoce com o aparelho Herbst, associado ao Trainer for Kids (T4K), utilizado como contenção, nas alterações do perfil facial. Uma amostra de 44 indivíduos, na fase da dentadura mista e com má oclusão Classe II divisão 1 foi dividida em 2 grupos: grupo tratado com o aparelho Herbst (n=22; média de idade inicial 8,9 anos) e grupo controle, acompanhado sem tratamento, (n=22; média de idade inicial 8,7 anos). Os grupos foram pareados quanto ao gênero e às idades ósseas e cronológicas. Para cada paciente do grupo tratado foram realizadas telerradiografias laterais denominadas: T1- inicial, T2- após 7 meses de tratamento e T3- 1 ano após a remoção do aparelho Herbst. No grupo controle, as radiografias foram tomadas anualmente, sendo convertidas em meses para efeitos de comparação. A análise estatística foi realizada por meio do teste t de Student (p<0,05). Os resultados mostraram que o aparelho Herbst promoveu redução significante da convexidade do perfil facial tegumentar e esquelético, aumento significante do ângulo mentolabial, além da projeção anterior e significante do lábio inferior e pogônio tegumentar. Após a fase de contenção com o T4K, observamos recidiva significante e parcial da convexidade do perfil facial tegumentar. Concluímos que o uso associado dos aparelhos Herbst e T4K, na dentadura mista, alterou positivamente o perfil facial, tornando-o menos convexo. Contudo, os efeitos mais significativos foram verificados logo após o uso do aparelho Herbst, sendo mais evidentes na região do lábio inferior e mento
The purpose of this prospective cephalometric study was to evaluate the influence of early treatment with the Herbst appliance followed by retention with a prefabricated positioner, Trainer for Kids (T4K), on facial profile changes. The sample consisted of 44 Class II division 1 patients, in the mixed dentition stage, which were divided into two groups: treated group (n=22; initial mean age of 8.9 years) and control group, not treated orthodontically, (n=22; initial mean age of 8.7 years). Both groups were paired according to gender as well to osseous and chronological ages. Three lateral cephalograms were taken and grouped as: T1- baseline; T2- after 7 months of treatment; T3- 1 year after Herbst appliance removal. In the control group, the radiographs were taken annually and converted to months for comparison. Statistical analysis was performed with Student’s t test, at significance level of 5%. The results showed that the Herbst appliance promoted a significant reduction on skeletal and soft tissue facial profile convexity, a significant increase of the mentolabial angle, as well as a significant protrusion of the lower lip and the soft pogonion. After T4K retention phase, we observed a significant and partial relapse on the soft facial profile convexity. We concluded that the Herbst treatment in the mixed dentition, in combination with retention, straightened the facial hard and soft tissue profile, making them less convex. However, the most significant changes were detected immediately after Herbst appliance removal and were mainly on the lower lip and the mentolabial areas
Landázuri, Denise Rocha Goes. "Avaliação das mudanças tegumentares naturais e induzidas pelo aparelho de Herbst, em indivíduos com má oclusão classe II, divisão 1, na fase da dentadura mista /." Araraquara, 2013. http://hdl.handle.net/11449/104501.
Full textBanca: Ary dos Santos-Pinto
Banca: Lídia Parsekian Martins
Banca: Francisco Antonio Bertoz
Banca: Maria Beatriz Borges de Araújo Magnani
Resumo: O objetivo desse estudo cefalométrico prospectivo foi avaliar a influência do tratamento precoce com o aparelho Herbst, associado ao Trainer for Kids (T4K), utilizado como contenção, nas alterações do perfil facial. Uma amostra de 44 indivíduos, na fase da dentadura mista e com má oclusão Classe II divisão 1 foi dividida em 2 grupos: grupo tratado com o aparelho Herbst (n=22; média de idade inicial 8,9 anos) e grupo controle, acompanhado sem tratamento, (n=22; média de idade inicial 8,7 anos). Os grupos foram pareados quanto ao gênero e às idades ósseas e cronológicas. Para cada paciente do grupo tratado foram realizadas telerradiografias laterais denominadas: T1- inicial, T2- após 7 meses de tratamento e T3- 1 ano após a remoção do aparelho Herbst. No grupo controle, as radiografias foram tomadas anualmente, sendo convertidas em meses para efeitos de comparação. A análise estatística foi realizada por meio do teste t de Student (p<0,05). Os resultados mostraram que o aparelho Herbst promoveu redução significante da convexidade do perfil facial tegumentar e esquelético, aumento significante do ângulo mentolabial, além da projeção anterior e significante do lábio inferior e pogônio tegumentar. Após a fase de contenção com o T4K, observamos recidiva significante e parcial da convexidade do perfil facial tegumentar. Concluímos que o uso associado dos aparelhos Herbst e T4K, na dentadura mista, alterou positivamente o perfil facial, tornando-o menos convexo. Contudo, os efeitos mais significativos foram verificados logo após o uso do aparelho Herbst, sendo mais evidentes na região do lábio inferior e mento
Abstract: The purpose of this prospective cephalometric study was to evaluate the influence of early treatment with the Herbst appliance followed by retention with a prefabricated positioner, Trainer for Kids (T4K), on facial profile changes. The sample consisted of 44 Class II division 1 patients, in the mixed dentition stage, which were divided into two groups: treated group (n=22; initial mean age of 8.9 years) and control group, not treated orthodontically, (n=22; initial mean age of 8.7 years). Both groups were paired according to gender as well to osseous and chronological ages. Three lateral cephalograms were taken and grouped as: T1- baseline; T2- after 7 months of treatment; T3- 1 year after Herbst appliance removal. In the control group, the radiographs were taken annually and converted to months for comparison. Statistical analysis was performed with Student's t test, at significance level of 5%. The results showed that the Herbst appliance promoted a significant reduction on skeletal and soft tissue facial profile convexity, a significant increase of the mentolabial angle, as well as a significant protrusion of the lower lip and the soft pogonion. After T4K retention phase, we observed a significant and partial relapse on the soft facial profile convexity. We concluded that the Herbst treatment in the mixed dentition, in combination with retention, straightened the facial hard and soft tissue profile, making them less convex. However, the most significant changes were detected immediately after Herbst appliance removal and were mainly on the lower lip and the mentolabial areas
Doutor
Silva, Taís Kereski da. "Avaliação do comportamento do ângulo de fase e da dinamometria manual em pacientes submetidos à cirurgia cardíaca : estudo de coorte prospectivo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/148173.
Full textBackground and aims: The phase angle (PA), derived from bioelectrical impedance analysis (BIA), have been interpreted as cell membrane integrity indicator; and the handgrip strength (HGS) have been used as prognostic indicators in some clinical situations. This study aims to evaluate the PA and HGS behavior in patients undergoing cardiac surgery and associate these with clinical outcomes and prognostic. Methods: Cohort prospective study of consecutive recruited patients undergoing cardiac surgery aged ≥18 years. The PA and HGS were measured at three set points: preoperatively, hospital predischarge and three months after surgery. Were also collected: time of cardiopulmonary bypass (CPB), ischemia, mechanical ventilation (MV), length of stay (LOS) in Intensive Care Unit (ICU) and LOS after surgery and calculated the EuroSCORE. Results: A decrease in PA was observed between the preoperative and the two postoperative stages (p<0.001). When the HGS was evaluated over time was seen a reduction between preoperative and predischarge (p<0.001) and a recovery in three months after surgery (p<0.001). The MV and EuroSCORE had an inverse association with PA and HGS in three stages. PA correlation in the first stage of the EuroSCORE p=0.007 and the second and third stage p<0.001, and for the three stages of MV (p<0.001), respectively. In HGS correlation in the first and second stage of the EuroSCORE and MV p<0,001 and in the third stage p=0.010 and p=0.018, respectively. Conclusion: PA and HGS appears to be related to MV time, LOS in ICU and LOS after surgery in patients undergoing cardiac surgery.
Dib, Luana Paz Sampaio [UNESP]. "Avaliação das mudanças esqueléticas e dentárias naturais e induzidas pelo aparelho de Herbst em indivíduos classe II na fase pré-pubertária." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/104480.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A pesquisa foi desenvolvida em três estudos. O 1º estudo foi uma revisão sistemática cujo objetivo foi avaliar as informações existentes na literatura mundial sobre as alterações dentárias e esqueléticas induzidas pelo uso do aparelho de Herbst no tratamento da Classe II na fase da dentadura mista. As bases de dados eletrônicas Scopus, Pub Med, Medline, Biblioteca Cochrane, Lilacs, Scielo foram pesquisadas no intuito de selecionar artigos pertinentes ao assunto que se enquadravam dentro dos critérios de inclusão estabelecidos. O 2º e o 3° estudo tiveram como objetivo diferenciar as alterações dentárias e esqueléticas sagitais e verticais, respectivamente, naturais e induzidas pelo tratamento associado Herbst e Trainer for Kids (T4K), utilizando a análise modificada “pitchfork” de Johnston. Uma amostra de 44 indivíduos pré-pubertários com má oclusão Classe II Divisão 1 foi utilizada, sendo dividida em 2 grupos: grupo tratado com o aparelho de Herbst (n=22) e grupo controle (n=22). A análise estatística dos dados do 2º e 3º estudo foi realizada por meio do teste t de Student, com nível de significância de 5%. O 1° estudo concluiu que o aparelho de Herbst induziu alterações dentárias e esqueléticas em indivíduos na dentadura mista. O 2° e o 3° estudo concluíram que o tratamento precoce da Classe II utilizando o aparelho de Herbst associado ao Trainer for Kids (T4K) induziu alterações predominantemente dentoalveolares
The research was developed in three studies. The first study consisted of a systematic review aiming to evaluate existing information in world literature on dental and skeletal Changes Induced by the Herbst Appliance and Natural on Class II Individuals in mixed dentitions phase. The electronic data base Scopus, Pub Med, Medline, Cochrane Library, Lilacs and Scielo were consulted for the purpose of selecting articles regarding to the subject that meets the requirements of the established inclusion criterion. The second and third studies aimed to distinguish the sagittall and vertical dental and skeletal changes, respectively, natural and induced by the associated treatments Herbst and Trainer for Kids (T4K) using Johnston`s “Pitchfork” modified analysis. It was taken a sample of 44 individuals in pre-puberty phase with Class II, division 1 malocclusion. The sample was divided into two groups: (1) group treated with the Herbst Appliance (n=22); (2) control group (n=22). The statistical analysis of the data for the second and third studies were carried out by means of t-student test, showing significance level of 5%. The first study concluded that the Herbst Appliance induced to dental and skeletal changes on individuals in mixed dentition phase. The second and third studies concluded that anticipated treatment of the Class II using Herbst appliance associated to Trainer for Kids treatments induced to changes, predominantly dentoalveolar changes
Dib, Luana Paz Sampaio. "Avaliação das mudanças esqueléticas e dentárias naturais e induzidas pelo aparelho de Herbst em indivíduos classe II na fase pré-pubertária /." Araraquara : [s.n.], 2011. http://hdl.handle.net/11449/104480.
Full textBanca: Ary dos Santos-Pinto
Banca: Lídia Parsekian Martins
Banca: Arnaldo Pinzan
Banca: Francisco Antônio Bertoz
Resumo: A pesquisa foi desenvolvida em três estudos. O 1º estudo foi uma revisão sistemática cujo objetivo foi avaliar as informações existentes na literatura mundial sobre as alterações dentárias e esqueléticas induzidas pelo uso do aparelho de Herbst no tratamento da Classe II na fase da dentadura mista. As bases de dados eletrônicas Scopus, Pub Med, Medline, Biblioteca Cochrane, Lilacs, Scielo foram pesquisadas no intuito de selecionar artigos pertinentes ao assunto que se enquadravam dentro dos critérios de inclusão estabelecidos. O 2º e o 3° estudo tiveram como objetivo diferenciar as alterações dentárias e esqueléticas sagitais e verticais, respectivamente, naturais e induzidas pelo tratamento associado Herbst e Trainer for Kids (T4K), utilizando a análise modificada "pitchfork" de Johnston. Uma amostra de 44 indivíduos pré-pubertários com má oclusão Classe II Divisão 1 foi utilizada, sendo dividida em 2 grupos: grupo tratado com o aparelho de Herbst (n=22) e grupo controle (n=22). A análise estatística dos dados do 2º e 3º estudo foi realizada por meio do teste t de Student, com nível de significância de 5%. O 1° estudo concluiu que o aparelho de Herbst induziu alterações dentárias e esqueléticas em indivíduos na dentadura mista. O 2° e o 3° estudo concluíram que o tratamento precoce da Classe II utilizando o aparelho de Herbst associado ao Trainer for Kids (T4K) induziu alterações predominantemente dentoalveolares
Abstract: The research was developed in three studies. The first study consisted of a systematic review aiming to evaluate existing information in world literature on dental and skeletal Changes Induced by the Herbst Appliance and Natural on Class II Individuals in mixed dentitions phase. The electronic data base Scopus, Pub Med, Medline, Cochrane Library, Lilacs and Scielo were consulted for the purpose of selecting articles regarding to the subject that meets the requirements of the established inclusion criterion. The second and third studies aimed to distinguish the sagittall and vertical dental and skeletal changes, respectively, natural and induced by the associated treatments Herbst and Trainer for Kids (T4K) using Johnston's "Pitchfork" modified analysis. It was taken a sample of 44 individuals in pre-puberty phase with Class II, division 1 malocclusion. The sample was divided into two groups: (1) group treated with the Herbst Appliance (n=22); (2) control group (n=22). The statistical analysis of the data for the second and third studies were carried out by means of t-student test, showing significance level of 5%. The first study concluded that the Herbst Appliance induced to dental and skeletal changes on individuals in mixed dentition phase. The second and third studies concluded that anticipated treatment of the Class II using Herbst appliance associated to Trainer for Kids treatments induced to changes, predominantly dentoalveolar changes
Doutor
Silva, Alisson Alves. "A relação dos valores de ângulo de fase com parâmetros de aptidão física e capacidade funcional e qualidade de vida em idosos." Universidade Católica de Brasília, 2018. https://bdtd.ucb.br:8443/jspui/handle/tede/2509.
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The phase angle is formed by the deviation of the electric current that is applied in the body, created from the moment that this current crosses the cellular membranes, being that part of these membranes will store energy, functioning like capacitors. The sample consisted of 37 elderly women, aged between 60 and 77 years. The objective of this study was to evaluate the phase angle as a predictor of functional capacity in the elderly. The elderly were divided into two groups: 19 elderly women exercising, water aerobics three times a week, and 18 elderly women who did not exercise at all. All of them underwent bioimpedance, anthropometry, hand hold tests, Time Up and Go and answered a quality of life questionnaire (SF-36). It has been found that the measured phase angle of this population is lower than the reference values for sex and for age, which is related to the strength abilities of palmar grip (right hand) and abdominal circumference.
O ângulo de fase é formado pelo desvio da corrente elétrica que é aplicada no corpo, criado a partir do momento em que essa corrente atravessa as membranas celulares, sendo que parte dessas membranas irão armazenar energia, funcionando como capacitores. A amostra foi composta por 37 idosas, com idades entre 60 e 77 anos. Pretendeu-se nesse trabalho avaliar o ângulo de fase como preditor de capacidade funcional em idosas. As idosas foram divididas em dois grupos, sendo 19 idosas que faziam exercício físico, hidroginástica, três vezes por semana e 18 idosas que não faziam nenhum exercício físico. Todas fizeram avaliação de bioimpedância, antropometria, teste de preensão de mão, Time Up and Go e responderam um questionário de qualidade de vida (SF-36). Verificou-se que o ângulo de fase medido dessa população é inferior aos valores de referência para o sexo e para a idade, que o mesmo relaciona-se com as capacidades de força de preensão palmar (mão direita) e circunferência abdominal.
Dias, Fernanda Dultra. "Efeitos da ventilação mecânica não invasiva na mobilidade e assincronia tóraco-abdominal em pacientes com DPOC." Universidade Nove de Julho, 2016. http://bibliotecatede.uninove.br/handle/tede/1825.
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Introduction: The VMNI has been showing an adjuvant treatment resource for patients with stable COPD or exacerbation. However little is known about the action that the NIV promotes in thoracic and abdominal and mobility if it is able to promote improvement of asynchrony. Objectives: to evaluate the effects of the NIV in thoracic and abdominal mobility, comparing variables in spontaneous breathing and during the use of NIV in patients with COPD by OEP. Methods: Two groups of individuals (GC with 14 healthy and COPD with 16 patients) were assessed in relation to the thoracic-abdominal asynchrony, respiratory and àcontrubuição variables of each thoracic compartment using a Plethysmograph SPOS System (BTS, Italy) in spontaneous breathing and with two VMNI modes. Results: Patients with COPD evaluated presented ATA in home, we also observed that the COPD asynchrony in all compartments in relation to healthy, which in turn has always maintained its AF next to zero and when it observes only the COPD group, using both methods of VMNI promote decrease of asynchrony in compartment CTS vs. ABD and the key changes found in the COPD group are related to the distribution of aid and action of each compartment toracico. Conclusion: There are ATA in patients with COPD, even at home, the degree of airway obstruction of these patients correlates with the presence of asynchronous Thoracoabdominal, the use of VMNI in the mode continuous positive airway pressure is able to improve thoracic abdominal synchrony in patients with COPD, as well as the use of some blood pressure to A6 led and that the VMNI is able to promote changes in compartmental contribution without promoting significant changes in respiratory variables in patients with COPD compared with age-matched healthy.
Introdução: A VMNI vem se mostrando um recurso adjuvante ao tratamento de pacientes com DPOC estável ou na exacerbação.No entanto pouco se sabe sobre a ação que a VNI promove na mobilidade tóraco abdominal e se é capaz de promover melhora da assincronia respiratória. Objetivos: Avaliar os efeitos da VNI na mobilidade e sincronia tóraco-abdominal, comparando as variáveis em respiração espontânea e durante o uso de VNI em pacientes com DPOC por meio da OEP. Método: Dois grupos de indivíduos (GC com 14 saudáveis e DPOC com 16 pacientes) foram avaliados em relação à assincronia toraco-abdominal, às variáveis respiratórias e àcontrubuição de cada compartimento torácico, utilizando-se um pletismógrafo OEP System (BTS, Italy) em respiração espontânea e com aplicação de dois modos de VMNI. Resultados: Os pacientes com DPOC avaliados apresentaram ATA em repouso, observou-se também que o DPOC apresentou assincronia em todos os compartimentos em relação ao Saudável, que por sua vez sempre manteve seu AF próximo a zero e quando se observa somente o grupo DPOC, o uso de ambas as modalidades de VMNI promovem diminuição da assincronia no compartimento CTS vs ABD e as principais alterações encontradas no grupo DPOC estão relacionadas a distribuição da contribuição e ação de cada compartimento toracico. Conclusão: Há ATA em pacientes com DPOC, mesmo em situação de repouso, o grau de obstrução das vias aéreas desses pacientes não se correlaciona com a presença de assincronia toracoabdominal, o uso de VMNI no modo pressão positiva contínua nas vias aéreas é capaz de melhorar a sincronia tóraco-abdominal em pacientes com DPOC, assim como a utilização de alguns níveis pressóricos de Bilevel e que a VMNI é capaz de promover alterações na contribuição compartimental sem promover alterações significativas nas variáveis respiratórias nos pacientes com DPOC comparando com saudáveis pareados por idade.
Teodoro, Joana Teresa Guimarães. "Avaliação da efetividade da protração maxilar com ancoragem intrabucal para correção da má oclusão classe III durante a fase de crescimento /." Araçatuba, 2018. http://hdl.handle.net/11449/157358.
Full textCoorientador: Osmar Aparecido Cuoghi
Banca: André Pinheiro de Magalhães Bertoz
Banca: Luhana Santos Gonzales Garcia
Resumo: Introdução: O tratamento da má oclusão Classe III em pacientes em crescimento é um desafio pela estabilidade e colaboração do paciente. A etilologia da Classe III pode ser por natureza esquelética, genética e fatores ambientais. Os aspectos encotrados são deficiência maxilar com mandíbula bem posicionada ou protruída da sua base ósseas, maxila bem posicionada com prognatismo mandibular ou a combinação de retrognatismo maxilar com prognatismo mandibular. A deficiência de maxila é frequentemente encontrada em pacientes com má oclusão Classe III sendo o tratamento indicado, a protração maxilar. Material e métodos: Foram selecionadas 8 crianças na faixa etária de 7 a 10 anos, com características faciais e esqueléticas para Classe III. Como terapêutica ortopédica, foi utilizado o aparelho expansor tipo Hyrax modificado com ganchos soldados na mesial dos segundos molares decíduos e primeiros molares permanentes. Para o inferior foi um arco lingual de Nance modificado com ganchos soldados na altura de caninos e segundos molares decíduos. O protocolo para disjunção maxilar com dois quartos de volta por dia em média de 7 a 10 dias, em seguida indicado o uso de elásticos para Classe III 3/16" de força média na primeira semana e a partir da segunda semana, elásticos 1/8" médio de cada lado da arcada até a correção da mordida cruzada anterior. Para a análise dos efeitos dentoesqueléticos foram usadas as teleradiografias iniciais (T1), as obtidas após a correção da MCA (T2) e as telerradi... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Introduction: Treatment of Class III malocclusion in growing patients is a challenge for patient stability and collaboration. Class III etiology may be by skeletal, genetic, and environmental factors. The aspects found are maxillary deficiency with well positioned or protruding mandible of its base bone, maxilla well positioned with mandibular prognathism or the combination of maxillary retrognathism with mandibular prognathism. Jaw deficiency is often found in patients with Class III malocclusion and the indicated treatment is maxillary protraction. Material and methods: We selected 8 children aged 7 to 10 years, with facial and skeletal characteristics for Class III. As an orthopedic therapy, the modified Hyrax type expander was used with welded hooks in the mesial of the second deciduous and first permanent molars. For the lower one was a lingual arch of Nance modified with welded hooks at the height of deciduous canines and second molars. The protocol for maxillary disjunction with two quarters of a turn in a mean of 7 to 10 days, then indicated the use of Class III 3/16 "elastic force in the first week and from the second week, elastic 1 / 8 "on each side of the arcade until the correction of the anterior crossbite. The initial teleradiographs (T1), those obtained after correction of the MCA (T2) and the cephalograms performed three months after the correction (T3) were used to analyze the dento-skeletal effects. Results: According to the proposed mechanics and applied m... (Complete abstract click electronic access below)
Mestre
Landázuri, Denise Rocha Goes. "Alterações cefalométricas do perfil facial decorrentes do crescimento natural e induzidas pelo aparelho de Herbst no tratamento da classe II divisão 1, em fase pré-puberal /." Araraquara : [s.n.], 2009. http://hdl.handle.net/11449/88698.
Full textBanca: Arnaldo Pinzan
Banca: Ary dos Santos-Pinto
Resumo: O objetivo deste estudo cefalométrico foi avaliar as alterações no perfil facial decorrentes do crescimento natural e induzidas pelo uso do aparelho de Herbst no tratamento da má oclusão Classe II divisão 1 de Angle. A amostra foi constituída por dois grupos, com idades óssea e cronológica equivalentes, e, portanto, pertencentes aos estágios 1 e 2 de maturação esquelética (CVM). O grupo experimental foi constituído por 20 pacientes (12 meninos e 8 meninas), com média de idade inicial de 9,3 anos, que receberam tratamento com o aparelho de Herbst por 7 meses. O grupo controle foi constituído por 16 indivíduos (9 meninos e 7 meninas), com média de idade inicial de 9,1 anos, não tratados ortodonticamente e com características esqueléticas e dentárias semelhantes ao grupo experimental, derivados dos arquivos de documentações do Burlington Growth Centre da Faculdade de Odontologia, Universidade de Toronto, Canadá. Para avaliação das mudanças no perfil facial foram utilizadas telerradiografias em norma lateral iniciais e após 7 meses de tratamento no grupo experimental, e no grupo controle as radiografias foram tomadas anualmente e convertidas em 7 meses para efeitos de comparação. Os dados obtidos foram submetidos à análise estatística, realizada com teste t de Student, com nível de significância de 5%. Os resultados indicaram que o aparelho de Herbst promoveu uma redução significante da convexidade do perfil facial esquelético e de tecidos moles, aumento significante do ângulo mentolabial, além de demonstrar tendência à abertura do ângulo nasolabial. Alterações estatisticamente significantes como o aumento da altura facial anterior inferior, a retrusão do lábio superior e a protrusão do lábio inferior, assim como o aumento em comprimento deste, também foram observadas. Pode-se concluir que o uso do aparelho de Herbst induziu efeito favorável... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The purpose of this cephalometric study was to evaluate the facial profile changes due to natural growth and induced by the Herbst appliance on treatment of Angle's Class II division 1 malocclusion. The sample consisted of two groups, matched according to osseous and chronological ages, and therefore classified as stages 1 and 2 of skeletal maturity (CVM). The experimental group consisted of 20 patients (12 boys and 8 girls), initial mean age of 9.3 years, which were treated with the Herbst appliance for 7 months. The control group consisted of 16 individuals (9 boys and 7 girls), initial mean age of 9.1 years, not treated orthodontically and with skeletal and dental characteristics similar to the experimental group, originally from Burlington Growth Centre, Faculty of Dentistry, University of Toronto, Canada. For the analysis of facial profile changes, initial and 7-month treatment follow-up lateral cephalograms were obtained for the experimental group, and for the control group the radiographs were taken annually and converted to 7 months for comparison. The data obtained were submitted to statistical analysis, performed with Student's t test, at significance level of 5%. The results showed that the use of the Herbst appliance promoted a significant reduction of skeletal and soft tissue facial profile convexity, a significant increase of the mentolabial angle, as well as demonstrating tendency to open the nasolabial angle. Statistically significant alterations as the increase of the anterior facial height, the upper lip retrusion and lower lip protrusion, as well as the increase on its length, were also observed. It can be concluded that the Herbst appliance had a favorable effect on facial profile change, which became less convex, by acting mainly on the lips and the mentolabial areas.
Mestre
Vargas, Erick Rodolfo. "The Anglo American academic attitude towards the field of judicial evidence and its usefulness to rational fact finding in Honduras /." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99155.
Full textMoreover, I draw such a scheme from the conceptual basis for admission of evidence and the probative processes identified by Wigmore. I think that if this scheme were applied to trial records, academicians would identify problems in the admission and weight of evidence and would develop approaches to make reason and justice prevail.
The scheme is presented in the form of a chart and because it is adapted to the Honduran context I consider that it will have a positive effect on academic research, theorization and teaching of issues of admission and weight of evidence in Honduras.
Brewer, Brian. "Challenges for expatriate managers an exploration of cross-cultural management, adjustemnt, and training issues faced by anglo-american managers in Hong Kong /." Online version, 1997. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.262778.
Full textBrewer, Brian. "Challenges for expatriate managers: an exploration of cross-cultural management, adjustment, and training issues faced by Anglo-American managers in Hong Kong." Thesis, Aston University, 1997. http://publications.aston.ac.uk/10711/.
Full textHärter, Jéssica. "Avaliação do uso do ângulo de fase e da força do aperto de mão como fatores prognósticos para pacientes cirúrgicos oncológicos." Universidade Federal de Pelotas, 2016. http://guaiaca.ufpel.edu.br:8080/handle/prefix/3929.
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A desnutrição é frequente no paciente oncológico e pode ter grande impacto no prognóstico. Assim, o uso de medidas capazes de detectar precocemente alterações no estado nutricional e funcional se torna importante. Portanto, o presente estudo buscou avaliar o ângulo de fase, a força do aperto de mão e a sarcopenia como fatores prognósticos de morbimortalidade pós-operatória em uma amostra de pacientes oncológicos. A coleta de dados ocorreu no Hospital Escola da Universidade Federal de Pelotas/EBSERH entre os meses de novembro de 2015 a maio de 2016. O ângulo de fase foi obtido através de teste de bioimpedância elétrica e para as análises foi padronizado, ou seja, ajustado para sexo e idade. A força do aperto de mão foi obtida por dinamômetro hidráulico. O diagnóstico de sarcopenia seguiu os critérios estabelecidos pelo European Working Group on Sarcopenia in Older People. O estado nutricional foi avaliado através da Avaliação Subjetiva Global Produzida Pelo Paciente. Foram considerados desfechos as complicações pós-operatórias e a internação prolongada. A classificação das complicações foi feita através da Classificação de complicações cirúrgicas de Clavien-Dindo e o tempo de internação foi separado em tercis para definir o que seria considerado tempo de internação prologando, que ficou definido como internação por um período maior ou igual a oito dias. A amostra final do estudo foi composta por 60 pacientes. A prevalência de desnutrição foi de 28,3% e a de sarcopenia foi de 16,9%. O ângulo de fase foi significativamente menor entre os pacientes que apresentaram complicações pós-operatórias graves e internação prolongada. A desnutrição esteve significativamente associada a esses dois desfechos, enquanto a força do aperto de mão e a sarcopenia não mostraram associação. Nesse volume consta o projeto de pesquisa, o relatório do trabalho de campo e o artigo gerado a partir dos resultados encontrados.
Malnutrition is frequent in cancer patients and can have a big impact on prognosis. The use of measures capable of detecting early changes in nutritional and functional states becomes important. The present study aims to evaluate phase angle, sarcopenia and handgrip strength as prognostic factors of postoperative morbimortality in patients with cancer. The data were collected in Hospital Escola da Universidade Federal de Pelotas/EBSERH between November 2015 and May 2016. Phase angle was measured through a bioelectric impendence test and was standardized for analysis based on gender and age. Handgrip strength was measured through hydraulic dynamometer. The sarcopenia diagnosis followed the criteria of the European Working Group on Sarcopenia in Older People. The nutritional status of each subject was evaluated through Patient Generated Subjective Global Assessment. The prognostic outcomes we considered were postoperative complications and long hospital stay. The classification of postoperative complications was given by the Clavien-Dindo Classification and the length of stay was split in tertiles to define what we would consider a long length stay, which was defined as the length of stay longer than or of that of eight days. The final sample had 60 subjects. The malnutrition prevalence was 28.3% and the sarcopenia prevalence was 16.9%. The phase angle was significantly lower among the subjects who showed severe postoperative complication or long hospital stay The malnutrition was significantly associated to this outcomes while the handgrip strength and sarcopenia did not show any association. In the present work we present the research project, the field report and the article based on the research results.
El, Khatib Nadine. "La contractualisation de la gouvernance d'entreprise face à l'évolution des réseaux contractuels interne et externe à la société anonyme cotée : étude comparative entre le droit français et le système anglo-américain." Rennes 1, 2012. http://www.theses.fr/2012REN1G047.
Full textThe recurrence of financial scandals since the 1970s have demonstrated the failure of the vertical mechanisms implemented to impose Corporate Governance rules using the disclosure based model. The reason for this failure is related to the evolution of the public limited incorporated joint stock company, that led, in turn, to the evolution of corporate governance problems. These problems have always been limited to the agency conflicts between shareholders and managers and to the conflicts of interest among internal stakeholders. Today, corporate governance problems are mainly related to the external stakeholders network of the company. The 2000-2001 scandals as well as the Subprime crisis have shown that the external contractual stakeholders such as bankers, lawyers, external auditors etc. Have played a major role in causing the companies involved to collapse. Since the contractual external stakeholders are gaining more power to affect the rights of internal stakeholders; and since the internal stakeholders network has a contractual basis, and finally because the contract is gaining a larger place in organising internal realtionships in the company such as through shareholders agreements, imposing corporate governance rules through contracting might be considered a better solution. The idea is to use the genius and skills of contract drafters to the benefits of corporate governance in order to strengthen the bargaining power of all internal and external stakeholders and allow them to insert corporate governance principles in their contracts
Mundstock, Eduardo. "Associa??o do n?vel de atividade f?sica e do tempo sentado com o ?ngulo de fase da bioimped?ncia." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2018. http://tede2.pucrs.br/tede2/handle/tede/8107.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
Introduction: The phase angle is considered an important prognostic marker because it reflects cellular health. Inadequate physical activity and sitting time are associated with a significant number of chronic noncommunicable diseases. Recent studies suggest that these two factors may be associated with phase angle values. Objective: to verify the association of phase angle with physical activity Methodology: the thesis will present two articles: a systematic review with metaanalysis and a cross-section article. Meta-analysis: We searched the following databases: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, SciELO, LILACS, SPORTDiscus, Scopus and Web of Science. Two reviewers independently assessed eligibility criteria and bias risks. The results were synthesized using random effects models. The association between physical activity and phase angle was evaluated considering the design of the study. Cross-sectional study: individuals over 11 years of age, of both sexes, who met bioimpedance assessment criteria and without diagnosis of chronic disease, were invited to participate in the study. The phase angle evaluation was performed using Ottoboni's Biospace equipment, model InBodyS10. Physical activity level and sitting time were assessed using the International Physical Activity Questionnaire (IPAQ). The association between the phase angle and the predictor variables was evaluated using a univariate and multivariate generalized linear model (GLM). All variables with a value of p <0.20 were included in the multivariate model. In the final model, only the variables with p <0.05 were included. Results: Systematic Review: Nine studies, totaling 575 participants, were included in the meta-analysis. The results of cross-sectional studies indicate that the active subjects presented a mean value of higher phase angle when compared to controls (DM = 0.70, 95% CI 0.48 to 0.92, P <0.001), with low heterogeneity (I2 = 0%, P = 0.619). In the crosssectional analysis, the differences between health status and type of physical activity evaluation were not significant (P = 0.332, P <0.253). In longitudinal studies (clinical trial and follow-up), mean values of final phase angle increased significantly compared to baseline (DM = 0.30, 95% CI 0.11 to 0.49, P <0.001), with low heterogeneity (I2 = 13%, P = 0.331). The differences were not significant in relation to the state of health and the type of longitudinal study (clinical trials or follow-up studies) (P = 0.900; 0.989). Evidence of publication bias was not observed, and the overall risk of bias was moderate to high. Cross-sectional article: 1228 subjects were included. The multivariate generalized linear model showed that both physical activity (? = 0.164, 95% CI 0.071 to 0.256, P = 0.001) and sitting time (? = 0.152, 95% CI 0.063 to 0, 242, P = 0.001) were determinant for the phase angle. As well as sex, body mass index and age, also remained associated with phase angle (? = -0.890, 95%CI -0.975 to -0.806, P <0.001; ? = 0.037, 95%CI 0.029 to 0,045, p <0.001 e; ? = -0.006, 95%CI -0.008 to -0.003 P<0.001, respectively). Conclusion: The results of the systematic review and the cross-sectional article suggest an association of phase angle with physical activity and sitting time. Among the main factors that may explain the positive effect of physical activity on the phase angle are the increase in cell membrane integrity and the change in intracellular content, these factors reflecting the cellular health and, consequently, the health of the individual.
Introdu??o: O ?ngulo de fase est? sendo considerado um importante marcador progn?stico, pois reflete a sa?de celular. A atividade f?sica inadequada e o tempo sentado est?o associados a um n?mero importante de doen?as cr?nicas n?o transmiss?veis. Estudos recentes sugerem que esses dois fatores podem estar associados com os valores do ?ngulo de fase. Objetivo: verificar a associa??o do ?ngulo de fase com a atividade f?sica. Metodologia: a tese ir? apresentar dois artigos: uma revis?o sistem?tica com metan?lise e um artigo transversal. Metan?lise: foram realizadas buscas nas seguintes bases de dados: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, SciELO, LILACS, SPORTDiscus, Scopus e Web of Science. Dois revisores avaliaram independentemente os crit?rios de elegibilidade e o risco de vi?s. Os resultados foram sintetizados mediante modelos de efeitos aleat?rios. A associa??o entre atividade f?sica e ?ngulo de fase foi avaliada considerando o desenho do estudo. Artigo transversal: os indiv?duos com mais de 11 anos de idade, de ambos os sexos, que atendiam aos crit?rios de avalia??o da bioimped?ncia e sem diagn?stico de doen?a cr?nica, foram convidados a participar do estudo. A avalia??o do ?ngulo de fase foi realizada usando o equipamento Biospace, modelo InBodyS10, da Ottoboni. O n?vel de atividade f?sica e o tempo sentado foram avaliados com o question?rio internacional de atividade f?sica (IPAQ). A associa??o entre o ?ngulo de fase e as vari?veis preditoras foram avaliadas utilizando um modelo linear generalizado univari?vel e multivari?vel (MLG). Todas as vari?veis com um valor de p <0,20 foram inclu?das no modelo multivari?vel. No modelo final, apenas as vari?veis com p <0,05 foram inclu?das. Resultados: Revis?o Sistem?tica: Nove estudos, totalizando 575 participantes, foram inclu?dos na metan?lise. Os resultados dos estudos transversais indicam que os sujeitos ativos apresentaram um valor m?dio de ?ngulo de fase superior quando comparado aos controles (DM = 0,70; IC 95%: 0,48 a 0,92, P <0,001), com baixa heterogeneidade (I2 = 0%; P = 0,619). Na an?lise transversal, as diferen?as entre o estado de sa?de e o tipo de avalia??o da atividade f?sica n?o foram significativas (P = 0,332; P <0,253). Nos estudos longitudinais (ensaio cl?nico e acompanhamento), os valores m?dios do ?ngulo de fase finais aumentaram significativamente comparando com os valores iniciais (DM = 0,30; IC 95%: 0,11 a 0,49, P <0,001), com heterogeneidade baixa (I2 = 13%, P = 0,3314). As diferen?as n?o foram significativas, em rela??o ao estado de sa?de e ao tipo de estudo longitudinal (ensaios cl?nicos ou estudos de seguimento) (P = 0,900; 0,989). N?o encontramos evid?ncia de vi?s de publica??o e o risco geral de vieses foi de moderado a alto. Artigo transversal: foram inclu?dos 1228 indiv?duos. O modelo linear generalizado multivari?vel mostrou que tanto a atividade f?sica (? = 0,164, IC95% 0,071 a 0,256, P= 0,001) como o tempo sentado (? = 0,152, IC95% 0,063 a 0,242, P= 0,001) foram determinantes para o ?ngulo de fase. Assim como o sexo, o ?ndice de massa corporal e a idade tamb?m permaneceram associados com o ?ngulo de fase (? = -0,890, IC95% -0,975 a -0,806, P <0,001; ? = 0,037, IC95% 0,029 a 0,045, p <0,001 e; ? = -0,006, IC95% - 0,008 a -0,003 P<0,001, respectivamente). Conclus?o: Os resultados da revis?o sistem?tica e do artigo transversal sugerem uma associa??o do ?ngulo de fase com a atividade f?sica e com o tempo sentado. Entre os principais fatores que podem explicar o efeito positivo da atividade f?sica sobre o ?ngulo de fase est?o o aumento da integridade da membrana celular e a mudan?a no conte?do intracelular, fatores estes que refletem a sa?de celular e, consequentemente, a sa?de do indiv?duo.
Toffano, Roseli Borges Donegá. "Análise vetorial de impedância bioelétrica e ângulo de fase em lactentes de 30 a 90 dias de idade a termo, adequados para a idade gestacional." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/17/17144/tde-28052018-174249/.
Full textBioelectrical impedance vectorial analysis (BIVA) can be considered a favorable method for evaluation of the body composition, due to the difficulties in the early life and excessive variability of the amount of water in the organism of the infants. It is a method that doesn\'t make any presumption on values of the body composition, which can be controlled by their own values, with no need for validation based on gold standards, not depending on equations or models. The aims of the study are to establish reference values creating BIVA curves, and to establish reference values for phase angle in term infants, healthy and appropriate-forgestational age (AGA), from 30 to 90 days of life. This study still intend to compare the data of BIVA between genders, among newborns and young infants, presented in the literature, and the ones obtained in this study. This transversal cohort study assessed healthy infants of a Community Centre for Social Medicine Vila Lobato, located in Ribeirão Preto, São Paulo, Brazil. Data of infants, anthropometry and bioelectrical impedance were collected (singlefrequency - RJL System ® model Quantum II - 800 ?A and 50 KHz). Using bivariate normal distribution of R/H and Xc/H (resistance and reactance for infants length, respectively), graphs RXc with the 95, 75 and 50% tolerance intervals of the vectorial value of the impedance, were made through BIVA Software 2002. 150 infants were studied (48,6% girls), term, AGA, exclusively breastfed. The average age was 56,4 (± 23,1) days, average weight was 5038,5g, higher in girls (p = 0,001), and the average length was 56,0 cm (± 0,03), higher in girls (p = 0,001). The values of R (± SD) were 521,2 (± 52,1); 519,4 (± 53,4) and 523,0 (± 51,1) ? and for Xc were 39,2 (± 5,3); 38,6 (± 5,5) e 39,7 (± 4,9) ?, respectively for all the infants, and boys and girls, with no difference between the genders (p = 0,6) and (p = 0,1). Regarding to the phase angle, we found normal value of 4,3° (± 0,7°) for all the infants, 4,3° (± 0,6°) for male and 4,4° (± 0,5°) for female, without statistical difference (p = 0,36). For Bioelectrical Impedance Vector analysis of infants from 30 to 90 days of life, it would be interesting to use specific reference values for this age group and gender. BIVA model makes possible the direct comparison of the measured vector of the small children; still makes it possible for children needing special care, using the tolerance reference values of healthy infants. This comparison allows us a qualitative assessment of the body composition, with no need of equations. With the values of phase angle characterized in the present study for healthy Brazilian infants, from 30 to 90 days of life, critical patients data can be compared, being useful during the hospitalization due to severe illness.
Osco, Karla Minacca. "Análise de parâmetros de impedância bioelétrica, bioquímicos, morfológicos e funcionais em idosos sarcopênicos e não sarcopênicos submetidos a treinamento resistido convencional e com resistência elástica : ensaio clínico aleatório /." Presidente Prudente, 2019. http://hdl.handle.net/11449/181393.
Full textResumo: A população idosa com idade igual ou superior a 60 anos dobrou na última metade do século XX. O envelhecimento é um processo inevitável com consequências deletérias e progressivas para o corpo humano, comprometendo os seus diferentes sistemas, tais como o fisiológico, o morfológico, o funcional e o endócrino. A perda progressiva de massa e força muscular, associada à função é denominada sarcopenia, e como consequência, promove maior risco para incapacidade funcional, fragilidade, quedas, fraturas, hospitalizações, institucionalizações, óbito precoce e alterações imunológicas. Em idosos as alterações no sistema imunológico podem ocorrer devido ao aumento da concentração sanguínea de citocinas pró-inflamatórias que agrava o estado sarcopênico, acarretando um processo de inflamação crônica de baixo grau (LGI, low grade inflammation). Dentre os parâmetros observados na avaliação da sarcopenia, a análise de impedância bioelétrica (BIA) vem sendo utilizada há tempo para mensuração dos diferentes componentes corporais dentro do sistema morfológico, especialmente os tecidos adiposo e muscular. Mais recentemente, parâmetros brutos da BIA (R, resistência e Xc, reatância) têm sido utilizados para a avaliação da saúde celular (PhA, ângulo de fase e a análise de vetores de impedância bioelétrica (BIVA, bioimpedance vector analysis). Com a finalidade de reverter ou atenuar os efeitos deletérios do envelhecimento, programas de treinamento físico, mais especificamente o treinamento resistido... (Resumo completo, clicar acesso eletrônico abaixo)
Mestre
Padula, Lilian 1982. "Estudo do equilibrio de fases e de estruturas de complexos formados entre polietilenoiminas e dodecilsulfato." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249587.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica
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Resumo: Polieletrólitos e surfatantes de carga oposta associam-se fortemente, levando à formação de fases líquido cristalinas com estruturas supramoleculares. A geometria da fase líquido cristalina depende de parâmetros tais como: concentração, razão molar (surfatante/ monômero), características do polímero, presença de aditivos e cossolventes. O objetivo desse trabalho é estudar o equilíbrio de fases e mudanças estruturais das fases líquido cristalinas em sistemas binários contendo complexo polietilenoimina-dodecilsulfato - (PEI-DS) e água, observando assim, a dependência das fases em relação às variáveis tais como razão molar surfatante/ monômero, massa molar e estrutura do polímero (ramificado ou linear) e quantidade de água. Os complexos apresentaram diferenças de comportamento quando utilizados polímeros de diferentes massas molares. O polímero de maior massa molar (2000 'g.mol POT. -1') apresentou apenas estruturas lamelares, já o polímero de menor massa molar (423 'g.mol POT. -1') apresentou estruturas lamelares e hexagonais. Depois de estudados os efeitos das diferentes características do polímero sobre o sistema binário composto por complexo e água, foi escolhido um determinado complexo cuja razão molar 'N IND. SURFATANTE'/ 'N IND. MONÔMERO' é 0,75. Este foi estudado na presença de água e um cossolvente. Os cossolventes escolhidos foram decanol e p-xileno, para ambos os sistemas houve predominância de fase hexagonal. De maneira geral, a troca do contra-íon simples, Na+, pelo contra-íon polimérico, PEI, provocou diferenças no comportamento das mesofases tanto na geometria quanto nas dimensões estruturais, tanto para os sistemas binários quanto para os sistemas ternários
Abstract: Polyelectrolytes associate strongly with oppositely charged surfactants in water, being able to generate liquid crystalline phases with interesting supramolecular structures. The geometry of the liquid crystalline phase depends on parameters such as: concentration, surfactant/monomer ratio, polymer characteristics and presence of cosolvents. The objective of this work is to study the phase equilibria and the structural changes of liquid crystalline phases in binary systems which contain a complex polyethyleneimine dodecylsulfate - (PEI-DS) and water, analyzing the dependence of these phases on variables such as surfactant/monomer ratio, polymer molar mass and structure (branched or linear) and water content. Different polymers led to different phase behavior. While complex with PEI 2000 'g.mol POT. -1' formed only lamellar phases the PEI 423 'g.mol POT. -1' formed lamellar and hexagonal ones. The complex formed with surfactant/ monomer ratio of 0.75 was studied in the presence of water and cosolvents. The cosolvents were decanol and p-xylene and for both systems the hexagonal phase predominate. The counterion exchange from simple, Na+, to polymeric, PEI, produced differences on mesophases geometry and structural dimensions, both in binary and ternary systems
Mestrado
Físico-Química
Mestre em Química
Fischer, Hannes. "Estudos estruturais de xerogéis de óxido de níquel." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/43/43133/tde-09102001-185623/.
Full textStructural properties of several xerogels obtained by the sol-gel procedure and heat treated at different temperatures between 150 and 900ºC were studied. The initial systems were dry gels prepared from liquid solutions composed of nickel chloride, buthanol, water and acetic acid. During the different isothermal treatments, volatile species leave the inicial material and structural transformations occur. The resulting porous materials (xerogels) were studied by means of several structural techniques: small angle X ray scattering (SAXS), X ray absorption spectroscopy (XANES and EXAFS), X ray diffraction (XRD) and scanning electron microscopy. These studies were complemented with chemical analysis (infrared spectroscopy), differential thermal analisis, mass loss and density measurements. The experimental results demonstrated that the porous structure of the starting material, based on nickel chloride, transforms in a also porous biphasic structure composed of nickel chloride and nickel oxide, respectively, rich fase. The volume fraction occupied by the nickel oxide rich fase of the final material increases with temperature of heat treatment. For temperatures above 500ºC, practically all the sample volume transforms and is occupied by the NiO phase. It was demonstrated that the porous structure of all materials, studied by SAXS, is composed of nanopores (sizes ranging from 10 to 150Å ) and mesopores (larger than 150Å), their fraction depending on the heat treatment temperature. Particularly, nanopores are only present in samples treated below 500ºC. The average local order close to nickel atoms, determined by EXAFS, corresponds to the expected one for biphasic systems whose volume fractions depend on treatment temperature, in agreement with XRD results. The structural properties of the several materials obtained after different heat treatments were studied as functions of preparation conditions of precursor solutions. In a first series of experiments, acetic acid content in the solution was varied. It was demonstrated that higher acetic acid content promotes the formation of more compact structures. In a second series of experiments, water content was varied. It was concluded that water content only affects the structure of the materials heat treated at temperatures below 500ºC.
Salmazo, Carla Alexandra Almeida. "Parâmetros de avaliação nutricional para detectar desnutrição em pacientes com AIDS em tratamento com antirretrovirais." Universidade do Estado do Rio de Janeiro, 2010. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3286.
Full textThe assessment of nutritional status in patients with HIV is of great importance, because the consequences caused by the pathological process of the disease are associated with weight loss, lean body mass and severe malnutrition, which predicts increased morbidity and mortality. The values of CD4 linfometria have also been used as predictors of short and medium term development of opportunistic infections, which are uncommon in patients with CD4 counts > 200 cells/mm3. Based on this knowledge, we chose to study the nutritional status of HIV positive men and women according to CD4 cell count. Participants had the following nutritional parameters assessed: body mass index (BMI), corrected arm muscle area (AMA), serum albumin and the phase angle (PA). We studied 39 HIV-positive patients, under treatment in a infectious diseases clinic of the University Hospital Pedro Ernesto (HUPE). None of patients has malnutrition according BMI and albumin in both sexes, regardless of the number of CD4 cells. However, in men and women to AMA and the PA, have demonstrated reductions in parameters of lean body mass. Regarding the association between nutritional indicators and the number of CD4 cells, we observed a significant correlation with the AMA and albumin in the study group. The correlation according to gender remained significant in both groups for AMA and a positive trend (p = 0.06) between the PA and CD4 in males. Therefore these results demonstrate that to assess nutritional status, especially the compartiment of lean body mass in HIV positive patients under antirretrovirals, it is necessary to use more sensitive, even in patients with the best state of disease control.
Castanho, Ivany Alves. "Associação de indicadores da função da membrana celular com o volume de massa tumoral de pacientes com câncer de pulmão não pequenas células." Universidade do Estado do Rio de Janeiro, 2009. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=1864.
Full textPhase angle (PA), determined by bioelectrical impedance analysis (BIA), detects changes in electrical properties of the tissues becoming a prognostic indicator in several chronic diseases including lung cancer. This study aimed to verify the possible relationship of AF and the ratio of extracellular mass and body cell mass (ECM/ BCM) with the measure of the volume of the tumor mass and survival of men with lung cancer in non-small cell (NSC), comparing this group of patients with active smokers group control without cancer. We evaluated the males with histopathology diagnosis of lung cancer NSC previously untreated chemotherapy, radiotherapy or surgery (G1 = 30) and active smokers with no signs of disease (G2, n = 30). The volumetric measurement of tumor mass of patients was through software Bebuí (Analysis System of Pulmonary Nodules) and segmentation done by semi-automatic process using a region growing algorithm and aggregation of voxels. The analysis by BIA was performed using the apparatus Biodynamics model 450. The average age of G1 was 65.6 9.3 years and G2, 61.5 8.5 years. For the assessment of functional capacity of patients used the Karnofsky Performance Status Scale (KPS). There was no significant difference between the means of anthropometric measurements in both groups. However, the AF average was lower in G1 at 0.43 (p <0.05) with the mean ratio of ECM / BCM higher (1.28 0.14 p <0.02) compared to G2. The results of the associations between indicators of cellular function with the volume of disease were: PA and VMT (r = - 0.545, p <0.02), MEC/MCC and VMT (r = 0.594, p <0.01), PA and KPS (r = 0.44 p = 0.015). We observed longer survival for patients with KPS> 70% (p <0.02), PA ≥ 5.65 (p <0.04); reason ECM / BCM <1.22 (p <0.01) VMT and ≤ 163 ml (p <0.04). PA was associated with the level of smoking (r = - 0.54, p <0.03) in G2, possibly pointing to changes in cellular function caused by nicotine in active smokers with high nicotine load. Our results, evaluated together show that the PA and the reason ECM / MCC should be employed to assess the integrity of the cell membrane in patients with lung cancer NSC in the period before the treatment and that the level of smoking should be considered as variable important in assessing PA in studies with subjects with no disease.
Pospíšil, Aleš. "Detekce a sledování polohy hlavy v obraze." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218928.
Full textShih, Meng-Shian, and 石孟憲. "PSO accelerated 3D face angle searching system for face recognition." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/06425040426260388469.
Full text淡江大學
電機工程學系碩士班
97
Face recognition has been one of the most popular topic of image processing. But there always exist a problem in conventional 2D face recognition system. It is the limitation of tolerance from face poses. For solving this problem, 3D model based face recognition has been proposed in recent years. But it took a long time while matching the angles from an random head pose in conventional 3D model based face recognition system. So we accelerated the angle matching step by combining the Particle Swarm Optimization with 3D model based face recognition system.
Hsiaw, Yu-Hung, and 蕭宇宏. "Face Age Classification based on Anthropometric Models via Angle." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/62496291067455048446.
Full text國立暨南國際大學
通訊工程研究所
98
In this thesis, an age classification method, anthropometric method is measuring the face ratio method and do research. Distinguished the face features away from child to adulthood is not easy. Anthropometric method can apply to distinguish for young, not usually apply to adults. Based on shape free texture and learning is introduced. After a face is detected, face alignment extracts facial landmarks by which the face image is complex. Furthermore, of local feature, Haar-like feature is extracted from the shape free texture. Euclidean distance method is used for training child or adults classifiers, and will try to propose a transformation of organ identity is characterized by the angle of approach. Through experiment it is shown that, more efficient for discriminating pre-school child and youth aged people. The research method for all age groups total recognition rate is up to 85.02%. Unfortunately this research method identify middle-aged population less effective, but identify pre-school age and young people quite effective, the highest recognition rate is 98.37% above.
CHEN, TE-EN, and 陳得恩. "A Multi-Angle Face Recognition Based on Geometry Features." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/80912211361237596022.
Full text嶺東科技大學
資訊科技系碩士班
104
Nowadays, the face recognition is widely used in daily life such as the application on the unlock system of the cellphones, the access control system of the buildings, the E-Gate in the airport, and the basis to solve a case. A good face recognition system did not depend only upon the factor of fast and convenience, but also more important in precision. This study recognizes the face that based on the theory of the geometry features. Further, we also included the face in profile into the experiment to study the effect for the successful rate. In this investigation, we capture the face from complex background by using the methods of color information and morphology. After that, we positioned the eyes by using the circular detector and then to find out the specific points of nose and mouth in accordance with the biological character. Moreover, we used the weighted function and normalization method to project onto a feature vector space to recognize a particular face. In addition, the experimental result shows an outperformance by adding the face in profile to the recognized training system.
Lee, Chih-Hsien, and 李芷嫻. "The Creation of Face Album Using Techniques of Face Positioning, Tracking and Angle Calculation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/87u7kd.
Full text元智大學
資訊工程學系
106
In recent years, the popularity of community sites, so that after uploading photos can also detect face and recognize face. In the campus, the camera is quite popular, but the campus security is always worrying. Therefore, this paper proposed the face detection system, and finally will get the face region to create a face album. In the system design, we divided into five parts: (1) real-time face positioning; (2) face tracking; (3) face recognition; (4) face pose calculation; (5) the creation of face album. When shooting in the camera, we need to detect the face quickly and accurately on the screen, we use FDDB's face database as training data, and use the YOLO object detection architecture to train the weight, so we can get the weight to do face position. After face positioning, we will track the face, and give the face a tracking number. Then we will do the face recognition to determine whether the tracking number is given correctly through calculating of the facial feature vectors. After face recognition, we will obtain the face feature points by Dlib, we can know the feature points of the 2D and 3D coordinates, through the formula will be able to get the face angle according to the three-axis rotation. Finally, we use the web page to create a face album, it will get the face according to the angle of the number to do the sort, and stored in the GIF format presented in the face album, so the album will show the face from left to right. The Face album can make it easy to find the face, it do not only take too much time and cost to watch the camera, but also can quickly view all the faces, face rotation can also be seen in more detail information.
Liu, Yuan-Cheng, and 劉原呈. "Deep Learning Based 90-Degree Angle Side-View Face Recognition." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8399sw.
Full text國立臺灣科技大學
自動化及控制研究所
107
In this paper, we explore 90-degree angle side-view face recognition based on deep learning. First, using the traditional machine learning method, the feature extraction is performed on the 90-degree side-view face image by MB-LBP and Haar-like respectively. Then, the 90-degree side-view face classifier is trained by Adaboost algorithm. On the other hand, the training and classification are performed with Faster R-CNN, one of deep learning methods. The experiment was carried out in three classification methods: MB-LBP feature classifier, Haar-like feature classifier and deep learning Faster R-CNN algorithm. Experimental results show that the depth learning Faster R-CNN algorithm has a success rate of more than 99% in the 90-degree side-view face without background interference images and in natural background images. In order to verify the possible effects in the case of background image interference, we also randomly placed the 90-degree side-view face image into the same natural background image for testing, which also can achieve good performance. Keywords: Side-view face, face recognition, machine learning, MB-LBP, Haar-like, feature extraction, deep learning, Faster R-CNN.
Liao, Jyun-Jie, and 廖俊傑. "Face Recognition with Consideration of Illumination and Facial Angle Adjustment." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/37334782576379502682.
Full text國立雲林科技大學
資訊工程系
103
In this paper, the Radio-frequency identification (RFID) technology and face recognition are integrated for access control system. A rapid face detection scheme which using a set of rotated haar-like features is adopted for face detection. A normalization process is then applied to adjust the detected faces. The speeded up robust features (SURF) algorithm is used for registering the detected face and the stored face image. The complex wavelet structural similarity is finally used for face authentication. Experimental results show that the proposed method achieves high recognition rate. The proposed method had operated in a multinational enterprise well with high satisfaction, which makes the security stronger and reliable.
Wang, Hao-Hsueh, and 王顥學. "3D AAM based Face Alignment under Yaw Angle Variation using 2D and 3D data." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/38221687204633933165.
Full text國立臺灣大學
資訊網路與多媒體研究所
99
Method using 3DAAM have advantages in handling face deformation and alignment. However, they tend to fail when human head is under wide yaw angles, due to the dramatic reduction of the visible facial features, which decreases the information useable by the alignment. As for 3D data alignment, due to the property of the 3D data which provides 3D structure, the alignment is able to capture the 3D structure and angle but loses the precise location of features. 3D and appearance based alignment suffers from different issues and is reliable in different situations. For dealing with wide yaw angle face alignment under the consideration of locating the features, and angle estimation, we introduce an approach to estimate the belief between 3D and 2D alignment. The algorithm incorporate 3D data alignment into 3D Active Appearance Model (3D AAM) fitting using a Time-of-Flight camera and a RGB camera. The proposed algorithm benefits from both 3D structure and texture information by estimating the belief between 3D and 2D alignment, and results in a more stable alignment with 126% improvement maximally, compared with the 3D AAM using 2D image only. Experiments demonstrate the improvement using real-world data. Its application to 3D structure recovery is also demonstrated.
Ciou, Yu-Hong, and 邱昱宏. "Investigation of Entrance Angle Effects on the Machined Surface and Tool Insert in Face Milling." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/7qcvqe.
Full text國立臺北科技大學
製造科技研究所
99
Face milling is one of the most common milling processes in metal cutting. How to select the entrance angle for face milling is an important scheme, because it affects the machined surface quality and the cutting tool life very much. The purpose of this study is to investigate the milling forces, tool wear, machined surface roughness, and the stresses induced in the tool insert under different entrance angles of face milling operations, and illustrate the influences and importance of entrance angles in face milling. To compare the effects in face milling, 6 different types of entrance angles, -20°, -10°, 0°, 30°, 60° and 75°, are included. And, there are 3 feedrates and 3 cutting depths for each entrance angle. The material used for face milling experiments is nodular cast iron FCD700 with machining surface of 30 mm (width) × 200 mm (length). The diameter of the face cutter is 100 mm, with only one tool insert installed (tungsten carbide), for all milling experiments. Using only one insert eliminates the influences of tool run-out and deviations among inserts during milling. All the milling speeds and tool feedrates used in present experiments were adequately referred to the tools catalog. The experimental results show the entrance angles that near zero bring to larger horizontal cutting forces acted on the face cutter during milling. It is to say, with larger entrance angle or larger minus entrance angle (such as 75° and -20° in present study), the maximum horizontal cutting forces will be reduced; however, duration of the real cutting time in one revolution will be longer. In comparison of machined surface roughness, it reveals better machined surface can be obtained by using larger entrance angles (or larger minus entrance angles) because of more densely cutting texture compared with small entrance angles. In the tool wear experiments, the milling condition of 75° entrance angle causes the maximum flank wear while 30° entrance angle causes the minimum in present study. Finally, the paper uses a mechanistic face milling force model to predict the tangential, radial, and axial forces acted on the tool insert during milling. By using the model, we can analyze the stress distribution in tool insert during milling for each cutting condition. The simulated results show that the face milling with larger entrance angle generates larger equivalent stress on the main cutting edge.