To see the other types of publications on this topic, follow the link: PHCN.
Dissertations / Theses on the topic 'PHCN'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'PHCN.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Enofe, Obamwonyi Martyn. "Improving Maintenance Perception in Developing Countries - A Case Study." Thesis, Linnéuniversitetet, Institutionen för teknik, TEK, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-6630.
Full textAbstract:
Despite the continuous evolving world of technology, maintenance has responded tremendously in meeting this rapid technological change. Nevertheless, inadequate maintenance has become one of the most issues faced by organizations in developing countries. Maintenance is seen as an unimportant activity in most developing countries thus, it is not given high priority due to insufficient/ minimal knowledge about the concept. Hence, the purpose of this thesis (submitted for Total Quality Maintenance at the Department of Terotechnology) is to enhance the perception and maintenance in developing countries. A case study was performed at Power Holding Company of Nigeria (National Electric Power Authority). The company is responsible for the production, transmission and distribution of electricity in Nigeria. The analysis shows that proper education and training can facilitate or increase the perception of maintenance in developing countries. However, for the case company, the study shows that not having appropriate maintenance in place is the major problem behind the company’s inability to achieve its objectives. Thus maintenance practice can be improved significantly with proper maintenance education and training. The result from the study shows the concept of maintenance education and training program and who it should address. One major conclusion that can be drawn from the analysis is that major developments in developing countries are associated with modern technology from developed countries. Thus, maintenance should be given a top priority because keeping the proper functioning of the technologies depends greatly on DCs proficiency, in order to ensure viability of the development policies so as to obtain the benefit from modern technologies.
2
Ewulum, Ogemdi Kilian. "A new maintenance strategy for Power Holding Company Nigeria to contest the current power demand problem / O.K. Ewulum." Thesis, North-West University, 2008. http://hdl.handle.net/10394/2582.
Full textAbstract:
Power Holding Company of Nigeria (PHCN), responsible for generating,
transmitting and distributing electricity in Nigeria is being faced with an apparent
huge maintenance problem which seemingly contributes greatly to the power
demand problem of the country.
This apparent maintenance problem is investigated by surveying its root causes
through interviews, questionnaires and data gathered from selected case studies.
Questionnaires were used scientifically with a confidence level of 95% and
interval of +-5% and +-4.4% to establish a high level of integrity on data
gathered. Findings and deliverables are compared to South Africa’s power utility
company Eskom for validation of the final deliverable.
With the findings of this survey, the research problem was overcome by
developing a new maintenance strategy and work authorization system for the
company while making some recommendations on the training being given to its
maintenance personnel.
The New strategy called ‘Utility Availability Centered Maintenance Strategy’ or
UACMS is presented in the form of a flow chart/ block diagram with its different
sections fully explained. It mainly combines preventative, predictive and
corrective maintenance strategies alongside other modern maintenance
techniques. It’s all linked to a computer database support to ensure high
effectiveness. Furthermore, the work authorization system called ‘Internal Task
Authorization form’ serves to ensure responsibility in task execution within the
company.
During the course of this research, an excessive application of corrective
maintenance strategy, lack of root cause analysis and unavailability of computer
based applications were discovered in PHCN.Thesis (M.Ing. (Development and Management Engineering))--North-West University, Potchefstroom Campus, 2009.
3
Aghenta, Emmanuel Aigbokhaibho. "Mitigating risks associated with Lockout/Tagout (LOTO) of hazardous energy in Nigeria : a tracker approach / E.A. Aghenta." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9776.
Full textAbstract:
The main objective of the study was to determine the risk(s) associated with lockout/tagout of hazardous energy and propose a new LOTO procedure which tracks the implementation of LOTO to mitigate against identified risks as a basis for promotion of safety. The study focuses on electrical personnel working in PHCN. Only electrical accident risks are examined, not other types of risk e.g. mechanical, chemical, and nuclear.
To gather material for this study, a questionnaire was distributed amongst electrical workers in PHCN and their supervisors were interviewed. Relevant literature and publications were studied as reference.
According to electrical personnel experience, electrocution, arc flash, arc blast, burns and lockout and tagout of the wrong electrical circuit are seen as the biggest electrical safety risk with regards to LOTO of hazardous energy.
The research reveals new information about electrical accident risks. This information is used to create a procedure for tracking LOTO of hazardous energy. The procedure can be utilized in the mitigation of electrical risks and promotion ofThesis (MIng (Development and Management Engineering))--North-West University, Potchefstroom Campus, 2013.
4
Hussaini, Muzhgan. "Luminous Land of Phon." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91402.
Full textAbstract:
This thesis, Luminous Land of Phon, explores how architectural spaces, even interior spaces, interact with nature along different dimensions. Light and sound are the two very powerful elements of nature and are the focus of this study. Louis Kahn once said: "The sun does not realize how wonderful it is until after a room is made." (Source: https://www.quotetab.com/quotes/by-louis-kahn#GdaYdAIrZ8tmvcyh.97)
The question of nature is explored in an urban environment to challenge the tired dualistic division between the human and the natural world. This project transforms the way we think about the urban so that architecture and nature can have great harmony and elevate each other instead of canceling each other. The project is a school of architecture and landscape architecture that promotes fine spaces with desirable qualities of light and sound for the design professionals of the future. The project is sited in the University of the District of Columbia as an expansion of their existing campus and programs.Master of Architecture
The architecture is a school of Architecture and Landscape architecture consisting of a full scale natural water pool underneath the building, Gallery and shop space under the pool, studio spaces, class rooms, faculty offices, cafeteria, and ceremony halls for the University of the District of Columbia at its Van Ness Campus sited at the Connecticut Ave, NW Washington D.C. The thesis is an exploration of the concept of bringing nature into architecture and a formal study of their harmony with each other, Architecture, structure and construction of the building.
5
Fyn-Sydney, Betty Iboroma. "Phan geometries and error correcting codes." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4433/.
Full textAbstract:
In this thesis, we define codes based on the Phan geometry of type An. We show that the action of the group SUn+1(q) is not irreducible on the code. In the rank two case, we prove that the code is spanned by those apartments which only consist of chambers belonging to the Phan geometry and obtain submodules for the code.
6
Wu, Jesse 1972. "Towards a poly-phon-ic environment." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/70865.
Full textAbstract:
Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1998.Includes bibliographical references (p. 96-99).
This thesis explores an architectural/landscape environment where polyphonic metaphors are the means for exploration and investigation. Polyphonic, as described in musical definitions/ terms, is the style of composition in which two or more distinctly independent but organically related parts sound against one another. This combination produces associations within the piece that relate to various time lengths and musical instruments when particular musical motives, specifically melodic lines, play against one another. An interdependent relationship between the lines, a vertical association, is referred as harmony, while an interdependent relationship within the lines, a horizontal relationship, is referred as melody. The significance of this metaphorical association with architectural form is the opportunity to create an architectural vocabulary that is exemplified by its richness and diversity of spatial, material, and subconsciousness qualities that moves beyond music's time sequential nature. It is an attempt to provide an environment that exhibits polyphonic qualities in a space-time sequence. Inherent to achieve these qualities, several issues must be considered. This includes; territorial definition and exchange (privacies vs. public), materiality decisions, physical reciprocity, lighting intentions ... etc. The vehicle for these studies will be a chamber music facility programmed for both practice and performance. It is a place where chamber groups or individual performers have decisions to select a place appropriate for their "style" of performance beyond the traditional enclosed concert hall.
by Jesse Wu.
M.Arch.
7
Selden, Suzanne M. "PHC : unravelling a maze." University of Sydney, 2009. http://hdl.handle.net/2123/5976.
Full textAbstract:
Doctor of Philosophy(PhD)The thesis explores the complexities of primary health care in a setting characterised as being both isolated and remote, and in the process identifies factors critical for developing successful PHC programs in such settings and more broadly. The four questions underpinning the study are 1) is a PHC approach relevant to the chosen small remote Australian community; 2) to what extent was a PHC approach being implemented; 3) what are the barriers and enablers to developing and implementing a PHC approach; and 4) what are the crucial factors for PHC programs in similar communities. The first chapter provides the background to the study, beginning with the range of descriptions of primary health care and the many themes needed to understand how it plays out in a small community. The Menindee community and some of the local health service players are introduced. Chapter Two explores complexity theory and complex adaptive systems and its relevance to organisations and managing change, particularly in complex environments. Chapter Three examines the evolution of primary health care, its philosophy, principles and elements as both a model of health care and of development. Chapter Four addresses social determinants, the life course and the long-term effects of inequity, before considering current factors that impact on health and health services. These include the beginning and end of the life course and those in the ‘middle’ where the effects of the obesity and diabetes epidemics are being played out at a younger age. The chapter concludes by noting common themes across the three chapters. Chapter Five describes the research design and methods. A case study using mixed methods was chosen and the theoretical framework provides an exploration of complexity and transdisciplinarity. What changed during the course of the study, questions of scope and its limitations are stated. Chapter Six is a quantitative analysis of the study community, which examines community demographics, the life course, a summary of adult and child health, and service use. These enable an understanding of the community profile, its uniqueness and its similarity to other communities that might benefit from a comprehensive PHC approach. The questions to be explored in the qualitative phase are identified. Chapter Seven is a qualitative study of the community in the midst of change. An individual interview guide approach was used and representatives from the community, local and regional health service providers were interviewed. Chapter Eight provides a synthesis of the two studies as they address themes from the complexity, PHC and social inequity literature. Five themes had particular significance to the study community: social determinants and Indigenous health; community size, resilience and change; chronic disease programs and prevention; vulnerable groups; and a complex adaptive systems perspective. The second section answers the four study questions. The thesis concludes with a discussion of PHC rhetoric and reality, the relevance of the study and its limitations, and issues requiring further research when considering primary health care in smaller communities.
8
Roberts, Adam E. "A PHAN-TYPE THEOREM FOR ORTHOGONAL GROUPS." Bowling Green State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1124723065.
Full text
9
Roberts, Adam E. "A Phan-type theorem for orthgonal [sic] groups." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1124723065.
Full text
10
Phan, Quoc Huy [Verfasser]. "Audio event detection, classification, and beyond / Quoc Huy Phan." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2018. http://d-nb.info/116843467X/34.
Full text
11
Iverson, Nate. "A Phan-like theorem for orthogonal groups in even characteristic." Bowling Green State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1280251081.
Full text
12
Phan, Thi Thanh Hoi [Verfasser]. "Testing levels of competencies in biological experimentation / Thi Thanh Hoi Phan." Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019552891/34.
Full text
13
Cook, Philip R. "Limitations and Extensions of the WoLF-PHC Algorithm." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2109.pdf.
Full text
14
Yarnell, James E. "Exploring the Photophysics of [Re(PNI-Phen)(CO)3Cl]." Bowling Green State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1269261887.
Full text
15
Henchy, Judith A. N. "Performing modernity in the writings of Nguyễn An Ninh and Phan Văn Hùm /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/10411.
Full text
16
Dumoulin, Hugues. "Synthèse et étude physicochimique de nouveaux phen-1-YL pyrroles à visée thérapeutique." Caen, 1997. http://www.theses.fr/1997CAEN4054.
Full text
17
Picard, Alexis. "I²PHEN : une nouvelle plateforme de télésurveillance médicale basée sur l'Internet des Objets." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCD056.
Full textAbstract:
La télésurveillance médicale est un domaine encore en plein développement en France. C'est une branche de la télémédecine qui a pour vocation de permettre à un médecin de recueillir et d'interpréter à distance les données nécessaires au suivi médical d'un patient. Elle permet, entre autres, d'améliorer le suivi médical à distance des personnes âgées en perte d'autonomie ou atteintes de pathologies chroniques (insuffisance cardiaque, diabète et hypertension artérielle par exemple), et ainsi elle favorise leur maintien à domicile et prévient au plus tôt d'éventuelles hospitalisations.Cette Thèse CIFRE au sein de l'entreprise MainCare (éditeur majeur de solutions digitales pour le monde de la santé) nous a permis de proposer la nouvelle plateforme I²PHEN (IoT Interoperable Platform for Health moNitoring low power) au sein de laquelle le suivi des paramètres de santé du patient est réalisé à l'aide d'objets connectés (tensiomètre, thermomètre, glucomètre, ...) qui communiquent avec la plateforme distante (monitoring de données distribuées). Le serveur de récupération peut alors déclencher des alertes, définies au préalable avec les équipes médicales. Le choix technologique des réseaux utilisés est un point majeur. En effet, les réseaux LPWAN (Low-Power Wide Area Network) offrent une alternative rentable et moins coûteuse en énergie que les réseaux cellulaires pour transmettre des petites quantités de données, sur des distances importantes et à partir de capteurs et d'objets faible puissance alimentés sur batterie. Ce domaine étant nouveau, et encore peu dédié au domaine médical, il a été nécessaire de développer de nouveaux axes de recherche comme COMMA, notre nouvel algorithme adaptatif pour réduire la consommation énergétique et les interférences en mobilités quotidiennes. Le premier verrou a été la consommation énergétique, en relation avec la qualité de service, de ces nouveaux réseaux dans le domaine critique de la santé. Le second verrou, et probablement le plus difficile, a été de proposer des solutions d'interopérabilité pour que les objets connectés puissent dialoguer via ces nouveaux réseaux avec la plateforme distante, par l'intermédiaire d'une passerelle locale (basée sur Arduino). Au final, la plateforme que nous proposons dans notre plateforme permet le télémonitoring des patients de bout en bout, interopérable et économe en énergieMedical telemonitoring is an area still in full development in France. It is a branch of telemedicine which aims at enabling a doctor in collecting and interpreting remotely the data necessary for the medical follow-up of a patient. It enables, among others, in improving remote medical monitoring of seniors with loss of autonomy or suffering from chronic diseases (heart diseases, diabetes and high blood pressure for example). Hence it encourages their stay at home and to warn as soon as possible of any hospitalizations.This CIFRE Thesis within Maincare company (major publisher of digital solutions for the world of health) allowed us to propose our novel platform I²PHEN (IoT Interoperable Platform for Health moNitoring low power) in which the monitoring of a patient's health parameters is done using connected objects (sphygmomanometer, thermometer, glucometer, ...) which communicates with the remote platform (distributed data monitoring). The central server can then trigger alerts which are defined beforehand with the medical teams. The technological choice of the networks used is a major concern. LPWAN networks (Low-Power Wide Area Network) offer a cost-effective alternative and are less expensive in terms of energy than cellular networks to transmit small amounts of data from sensors and energy efficient objects powered on batteries over important distances. This field being new, and still little dedicated to the medical field, it is necessary to develop new focus of research such as COMMA, a new adaptive algorithm to reduce energy consumption and interference in daily mobility. Hence, the first lock is the energy consumption, in relation to the quality of service (QoS), of these new networks in the critical area of telemedecine. The second lock, and probably the most difficult, is to propose interoperable solutions in which connected objects can interact, through these new networks, with the remote platform through a local gateway (based on Arduino). In the end, the platform that we propose in this PHD allows the telemonitoring of patients from end to end, is interoperable and energy efficient
18
Andries, Maria Madalena Costa. "Fatores associados à adequação do pré-natal no Brasil." Universidade Federal de Juiz de Fora, 2014. https://repositorio.ufjf.br/jspui/handle/ufjf/475.
Full textAbstract:
Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-01-22T13:47:34Z
No. of bitstreams: 1
mariamadalenacostaandries.pdf: 601192 bytes, checksum: 984ab20d82627b54486f62e5b20c775f (MD5)Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-01-25T18:53:54Z (GMT) No. of bitstreams: 1 mariamadalenacostaandries.pdf: 601192 bytes, checksum: 984ab20d82627b54486f62e5b20c775f (MD5)
Made available in DSpace on 2016-01-25T18:53:54Z (GMT). No. of bitstreams: 1 mariamadalenacostaandries.pdf: 601192 bytes, checksum: 984ab20d82627b54486f62e5b20c775f (MD5) Previous issue date: 2014-02-27
O trabalho tem por objetivo classificar a adequação do acompanhamento pré-natal no Brasil em diferentes níveis de complexidade e identificar fatores assistenciais, demográficos, socioeconômicos e comportamentais associados à inadequação desta assistência. Para a realização deste trabalho, foi utilizado o banco de dados do PNDS-2006, onde as mães fornecem informações sobre 5.958 nascimentos nas cinco macrorregiões do Brasil. Por meio dos critérios do PHPN, foram definidos os níveis de adequações e sua classificação em adequado e inadequado. Três níveis complementares e de complexidade crescente que se baseiam relativamente na avaliação da utilização da assistência pré-natal (início e número de consultas), nos procedimentos clínico-obstétricos (aferição da pressão arterial, altura uterina e peso materno) e nos exames laboratoriais básicos (sangue, urina e vacina antitetânica). Para a verificação da significância da associação entre os fatores e os níveis, foram aplicados testes qui-quadrado, considerando-se os pesos amostrais, para verificar os fatores associados à adequação. Os fatores significativos foram incluídos em modelos multivariados de regressão logística binomial. As percentagens de inadequação apresentadas pelos níveis foram de (23,2%) para o nível um, (34,7%) para o nível dois e (59,1%) para o nível três. Os fatores que apresentaram um número maior de variáveis significantes nas associações foram os socioeconômicos e comportamentais. Mulheres com uma renda familiar superior a três salários e com maior acesso a bens e serviços apresentaram menores percentagens de inadequação. O fato da mãe não desejar ter o filho ou de desejá-lo para o futuro, mostrou ser de grande relevância para a inadequação do serviço pré-natal. Os resultados poderão subsidiar a formulação de políticas públicas que visem à adequação do pré-natal, ampliando o acesso e o estabelecimento de procedimentos e ações, cujo objetivo principal seja o acompanhamento e a promoção do vínculo entre a assistência ambulatorial e o momento do parto, atendendo assim as diretrizes do SUS e os critérios do PHPN.
The work aims to classify the adequacy of prenatal care in Brazil at different levels of complexity and identify assistance, demographic, socioeconomic and behavioral factors associated with inadequacy of this assistance. For this work, the PNDS - 2006 database, with information provided by the mothers of 5,958 births in the five geographical regions of Brazil, was used. Using the PHPN criteria, levels of adjustments and classification into appropriate and inappropriate were defined. Three complementary and increasingly complex levels that are based on relatively reviewed the use of prenatal care (beginning and number of queries), the clinical and obstetric procedures (measurement of blood pressure, fundal height and maternal weight) and basic laboratory tests (blood, urine, and tetanus vaccine). To check the significance of the association between factors and levels, chi-square tests were applied, considering the sample weights, to verify the adequacy associated factors. Significant factors were included in multivariate models of binomial logistic regression. The percentages of inadequacy presented by the levels were (23.2 %) for level one (34.7 %) and for the level two (59.1 %) to level three. Factors that showed significant associations were greater socioeconomic and behavioral. Women with a family income higher than three minimum wages and greater access to goods and services had lower percentages of inadequacy. The fact that the mother does not wish to have the child or to wish for the future, proved to be of great relevance to the inadequacy of prenatal care services. The results may inform the design of public policies that the adequacy of prenatal care, expanding access and the establishment of procedures and actions whose primary purpose is to monitor and promote the link between outpatient care and delivery, thus meeting the SUS guidelines and PHPN criteria.
19
Phan, Truong San [Verfasser]. "The role of keratinocyte glucocorticoid synthesis in skin homeostasis and inflammation / Truong San Phan." Konstanz : KOPS Universität Konstanz, 2021. http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1f01d7id4cltz2.
Full text
20
Lopes, Ana Maria Arruda Ferreira Marques. "Employer branding em empresas B2B : o caso da PHC Software, S.A." Master's thesis, Instituto Superior de Economia e Gestão, 2017. http://hdl.handle.net/10400.5/14567.
Full textAbstract:
Mestrado em Ciências EmpresariaisO Employer Branding de uma empresa é essencial na atração de candidatos e na retenção de colaboradores. As empresas procuram destacar-se das demais, criando a sua marca de empregador, marca esta que deve ser comunicada para o exterior. No que toca a empresas Business to Business surgem algumas dificuldades nesta comunicação. Este trabalho é um estudo de caso que tem como objetivo compreender de que forma é que as organizações definem e promovem a sua marca de empregador, tentando perceber as dificuldades das empresas B2B e as estratégias que as mesmas utilizam para as ultrapassar. A PHC Software, S.A., uma empresa que desenvolve software de gestão e que atua no mercado B2B foi escolhida para este estudo. Foram consultados diversos documentos internos da empresa e recolhida bastante informação por observação direta. As informações obtidas permitiram entender melhor a visão da empresa sobre a temática estudada e confirmar a importância do Employer Branding para o sucesso das empresas B2B, especialmente no setor das tecnologias da informação.
Employer Branding is essential in attracting candidates and retaining employees. The companies try to stand out from the others, creating their employer brand, a brand that must be communicated to the outside. As far as Business to Business is concerned, there are some difficulties in this communication. This paper is a case study that aims to understand how organizations define and promote their employer brand, trying to understand the difficulties of B2B companies and the strategies they use to overcome them. PHC Software, S.A., a company that develops management software and operates in the B2B market was chosen for this study. Several internal documents of the company were consulted and information was collected by direct observation. The information obtained allowed us to better understand the company's view on the subject studied and confirm the importance of Employer Branding to the success of B2B companies, especially in the information technology sector.
info:eu-repo/semantics/publishedVersion
21
Phan, Thi Minh Diep [Verfasser]. "Internal characteristics, chemical compounds and spectroscopy of sapphire as single crystals / Thi Minh Diep Phan." Mainz : Universitätsbibliothek Mainz, 2015. http://d-nb.info/1075170532/34.
Full text
22
Nguyen-Sauerbaum, Lina Phan Anh [Verfasser], and Frank [Akademischer Betreuer] Schmidt-Döhl. "Betoninstandsetzung unter Wasser : Mörtelentwicklung und Applikationstechniken / Lina Phan Anh Nguyen-Sauerbaum ; Betreuer: Frank Schmidt-Döhl." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2017. http://d-nb.info/1143691296/34.
Full text
23
Nguyen, Dinh-Thi [Verfasser], and Thanh [Akademischer Betreuer] Phan. "Blow-up analysis for focusing many-body quantum systems / Dinh-Thi Nguyen ; Betreuer: Thanh Phan." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1218466138/34.
Full text
24
Smythe, Kirsten. "Using Petroleum Hydrocarbons (PHCs) to Characterize Contamination in the Cold Lake Oil Sands Region, Alberta." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41155.
Full textAbstract:
In-situ oil sands operations have been the dominant method of bitumen extraction in Canada since 2012; however, research on contaminants attributed to this method is limited in the peer-reviewed scientific literature, compared to that of open-pit mining. The Cold Lake oil sands region operates using exclusively thermal in-situ extraction techniques, raising the issue of whether oil sands activity is resulting in petroleum hydrocarbon (PHC) contamination in the absence of open-pit mines, upgraders, refineries, tailings ponds, and other bitumen processing operations. The lack of baseline contamination levels prior to oil sands development hampers debate on contamination from the oil sands industry. We address this shortcoming by using regional lake sediment cores to characterize petroleum hydrocarbons and trace their origin within the Cold Lake oil sands deposit. Petroleum hydrocarbons are hydrophobic compounds that bind to sediments, therefore persisting and accumulating in aquatic environments. This thesis examines historical levels of polycyclic aromatic hydrocarbons (PACs), petroleum biomarkers, and n-alkanes in radiometrically dated sediment cores collected from the depocenter of lakes within the Cold Lake heavy oil field. We used alkylated PACs and a suite of petroleum biomarkers to evaluate in-situ operations as potential petroleum-derived contamination sources. We predicted that similarly to open-pit mining, concentrations of PHCs in lake sediments would increase with industrial activity corresponding to proximity from in-situ operations. Like open-pit regions, alkylated PACs in Cold Lake sediments were elevated when compared to unsubstituted parent PACs and were significantly enriched in lake sediments deposited after the onset of oil sands operations. These findings imply that in-situ oil sands activity is driving the enrichment; however, diagnostic ratios and pyrogenic indices confirm a strongly pyrogenic origin in both pre-industrial and more recent sediments. When compared to a Cold Lake bitumen sample, the principal components driving PHC enrichment do not resemble bitumen. Likewise, diagnostic ratios of petroleum biomarkers and n-alkanes do not support bitumen as a significant source of hydrocarbons. PHC inputs in lake sediments are instead from terrestrial vegetation and plant waxes. These findings suggest that bitumen is not significantly contributing to petroleum hydrocarbon enrichment to lakes within the Cold Lake oil field; however, emissions from in-situ activity (natural gas burning, diesel trucks, seismic line cutting etc.) is increasingly abundant in more recent sediment.
With >80 % of Canadian bitumen reserves requiring in-situ techniques for extraction, this thesis provides the first assessment of the spatial and temporal relationship between contaminant loading and proximity to in-situ oil sands operations. Additionally, this study allows for the environmental implications of open-pit mining operations to now be compared to that of in-situ techniques.
25
Drinkard, Ilg Allyson M. "The Influence of Gender, Verbal Ability, and Socioeconomic Adversity on the Development of a Prosocial Disposition in a Sample of Urban Adolescents." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1344608906.
Full text
26
Phan, Qui Tra [Verfasser]. "Untersuchungen zur Nutzung der Solarenergie für die Wärme-Kälte-Kopplung unter tropischen Bedingungen / Qui Tra Phan." Dresden : TUDpress, 2007. http://d-nb.info/999769308/34.
Full text
27
Phan, Thi My-Dung [Verfasser]. "Prozessentwicklung und -optimierung zur Gewinnung einer Lipase aus der Hefe Trichosporon sp. / Thi My-Dung Phan." Aachen : Shaker, 2003. http://d-nb.info/1170544290/34.
Full text
28
Sudarga, Tjakraatmadja Airlangga Arya Janitra [Verfasser]. "Copper complexes with bpa- and phen-based ligands as artificial nucleases / Airlangga Arya Janitra Sudarga Tjakraatmadja." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1103486632/34.
Full text
29
Palmer, Alison. "Linear stability analyses of Poiseuille flows of viscoelastic liquids." Thesis, Aberystwyth University, 2007. http://hdl.handle.net/2160/5f85cd3a-2209-4b34-8527-735b41fee8e4.
Full textAbstract:
The linear stability of the Giesekus and linear Phan-Thien Tanner (PTT) fluid models is investigated for a number of planar Poiseuille flows in single, double and triple layered configurations. The Giesekus and PTT models involve parameters that can be used to fit shear and extensional data, thus making them suitable for describing both polymer solutions and melts. The base flow is determined using a Chebyshev-tau method. The linear stability equations are also discretized using Chebyshev approximations to furnish a generalized eigenvalue problem which is then solved using the QZ-algorithm. The eigenspectra are shown to comprise of continuous parts and discrete parts. The theoretical and numerical results are validated for the Oldroyd-B model, which is a simplified case of the Giesekus and PTT models, by comparing with results in the literature. The continuous and discrete parts of the eigenspectra are determined using a purely numerical scheme to solve the discretized eigenvalue problem. The continuous spectra are then more accurately determined using a semi-analytical scheme which uses an analytical solution of the Orr-Sommerfeld equation alongside a numerical solution for the base flow. A comprehensive survey of the effect of each shear thinning and extensional fluid parameter is undertaken and an instability is found for particular parameter values for the Giesekus fluid. A preliminary investigation of this instability is undertaken whereby the unstable discrete eigenvalue is investigated using an Orthonormal Runge-Kutta scheme within a shooting method which uses the results from the Chebyshev-QZ scheme as a starting point. The linear PTT fluid is found to be stable to infinitesimal disturbances within the range of shear-thinning and extensional parameters considered. The computational e ciency and accuracy of the numerical methods are also investigated.
30
Phan, Thanh Hai [Verfasser]. "In-situ characterization of self-assembled organic layers at anion modified metal/electrolyte interfaces / Thanh Hai Phan." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1238687083/34.
Full text
31
Gebhard, Susanne, and n/a. "The Phn and Pst systems of Mycobacterium smegmatis : phosphate transport and gene regulation." University of Otago. Department of Microbiology & Immunology, 2006. http://adt.otago.ac.nz./public/adt-NZDU20070502.112113.
Full textAbstract:
Phosphate is an essential but often growth-limiting nutrient for bacteria. At low concentrations of phosphate in the growth medium, bacteria induce high-affinity uptake systems for phosphate, and this is usually the ABC-type phosphate specific transport system Pst. In the fully sequenced genomes of pathogenic species of mycobacteria, several copies of the genes encoding for the Pst system (pstSCAB) have been identified and some of these genes have been shown to be virulence factors. The reasons for the presence of multiple copies of pst genes in pathogenic mycobacteria are not understood, and phosphate transport by these bacteria, as well as the gene regulation involved, is poorly characterised. The fast-growing M. smegmatis contains only a single copy of the pst operon, but we recently identified a gene locus containing three genes, phnDCE, which encode for a putative ABC-type phosphate/phosphonate transport system, and a gene, phnF, which encodes for a putative transcriptional regulator of the HutC subfamily of GntR like regulators.
To identify a function for the PhnDCE transport system and to characterise high-affinity phosphate transport in M. smegmatis, we created allelic exchange mutants in phnD and pstS, as well as a phnD pstS double deletion mutant. All three mutants failed to grow in minimal medium containing 10 mM phosphate, while the wildtype was able to grow in the presence of micromolar phosphate concentrations. No differences were observed in complex growth medium. Steady-state levels of [��P]-phosphate uptake were approximately 25% lower in all mutant strains as compared to the wildtype. Kinetics of phosphate uptake in the wildtype strain when grown at low phosphate concentrations (50 [mu]M P[i]) were biphasic, suggesting the presence of two inducible transport systems with apparent K[m] values of 16 [mu]M P[i] and 64 [mu]M P[i], respectively. Analysis of the kinetics of phosphate transport in the mutant strains led us to the proposition that the Pst system has an apparent Km value of ca. 16 [mu]M P[i], and the Phn system has an apparent Km of ca. 60 [mu]M P[i]. A third inducible phosphate transport system, which was active in the double mutant strain, had an apparent K[m] of ca. 90 [mu]M P[i]. Uptake of phosphate in all strains was not inhibited by the presence of excess phosphonates or phosphite, suggesting that all three transport systems were specific for phosphate. The study of phosphate transport in the presence of various metabolic inhibitors revealed that uptake by the Phn and Pst systems is driven by ATP-hydrolysis, consistent with ABC-type transport, while the third, unidentified transport system may be driven by the proton motive force.
We showed that phnDCE formed an operon, and that the promoter area of the operon lies within 200 bp of the start of phnD. To investigate the regulation of the phn and pst genes, β-galacosidase activities of strains carrying transcriptional lacZ-fusions of the pstSCAB, phnDCE and phnF promoter areas, and levels of mRNA of the phn and pst genes were studied. All genes were induced when phosphate concentrations fell below a threshold value of 30 [mu]M, which coincided with a shift in the growth characteristics of M. smegmatis. Expression of the pst operon appeared to be controlled directly by the PhoPR two-component regulatory system, while the phn operon may be under direct or indirect control by PhoPR.
To identify a role for PhnF in the regulation of phn gene expression, we created a phnF deletion mutant. PhnF appeared to repress transcription of phnDCE and phnF under phosphate-replete conditions. We identified two putative binding sequences for PhnF in the intergenic region between phnD and phnF with the sequence TGGTATAGACCA, which is similar to the proposed recognition consensus for HutC-like transcriptional regulators. Using site-directed mutagenesis of these sequences, we demonstrated that they are required for the repression of phnDCE and phnF. To prove PhnF binding to these potential binding sites, we attempted to express the M. smegmatis PhnF protein in E. coli, but could not obtain soluble recombinant protein. Electrophoretic mobility shift assays of the phnDCE promoter fragment using cell-free crude extracts of M. smegmatis were not successful.
We propose that Pst and Phn both constitute high-affinity phosphate specific transport systems of M. smegmatis, and that a third inducible phosphate transport system is present in this bacterium. PhnF is required for repression of phnDCE and phnF transcription under phosphate-replete conditions, while induction of the pst operon, and possibly the phn operon, under phosphate-limited conditions involves the PhoPR system.
32
Obioha, EE, and MG Molale. "Functioning and Challenges of Primary Health Care (PHC) Program in Roma Valley, Lesotho." Ethno Med, 2011. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000710.
Full textAbstract:
Primary Health Care (PHC) plays a vital role in decentralization of health care services. PHC is designed to
ensure health care coverage at the community level through the involvement of the community in improving their healthy
living. PHC offers treatment and care in continuum that is supported by a facility-linked home- based care system and a
referral system. While PHC is global, its operation and functioning in the area of community health provisioning varies across
communities. The main objective of this study is to find out whether PHC is effective or not in Roma Valley, Lesotho. The study
was carried out in Roma Valley, in the Maseru district of Lesotho. The population for this study includes the nurses under the
department of PHC, village health workers, Chiefs and out-patients from four different villages. Out of this, a sample of thirty
individuals was selected. The data for this study was collected through qualitative research technique, particularly oral interviews
and written records or secondary data sources. The analysis revealed that nurses and village health workers respond to the
social needs and health problems of the community and community members are also involved in improving their health status.
Village health workers face many challenges in their engagement in this system such as not being given incentives for what they
do and often uncooperative disposition of some community members including their leaders. It was also found that they operate
under a lot of stress due to lack of resources.
33
Sahito, Hadi Bakhsh Wirat Kamsrichan. "Participation of village health volunteers in PHC in Phuttamonthon Distric, Nakhonpathom Province, Thailand /." Abstract, 2005. http://mulinet3.li.mahidol.ac.th/thesis/2548/cd375/4737960.pdf.
Full text
34
Matsheke, Thembakazi. "A cost analysis of rural primary health care (PHC) services in KwaZulu-Natal." Master's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/9322.
Full textAbstract:
Includes bibliographical references.It has been found that South Africa has very limited costing information of health services at both primary and higher levels of care. Therefore, a study was conducted in Ingwavuma health district, a rural setting in KZN, evaluating costs of primary health care (PHC) services. The primary objective of the study was to evaluate the costs of providing PHC services in a rural setting and to compare costs of providing PHC services at different levels of care. Costs data were collected through interview and record reviews from Manguzi hospital, a district hospital, and nine clinics operating within the hospital's catchment area. Cost comparisons between Manguzi clinics and between the clinic and hospital levels were undertaken. Variations in terms of costs between similar facilities (clinics) were discovered, with some clinics being more costly compared to others. Such variations can be explained by some input costs, e.g. personnel which varied considerably between facilities. Variations in the personnel costs between similar facilities were found to be linked with staff distribution patterns and facility utilisation. In addition, variations in terms of costs were also discovered between services provided within one facility. For instance, expenditure figures revealed that the largest proportion of resources was spent on curative services. Tuberculosis and mental health services consumed a minimum amount of resources, namely about 1%. Further comparison of Manguzi results with those of the Centre for Health Policy (CHP) was undertaken. Costs analyses of PHC services provided at Manguzi clinics with similar facilities compared to other sites. namely Agincourt (a rural setting), and Alexandra Health Centre (AHC) (an urban setting), were undertaken. Manguzi and Agincourt have similar costs of PHC services. However, AHC has relatively higher costs compared to the other two sites. This is probably because Manguzi and Agincourt are both rural. Finally, analysis on scaling-up PHC services in Manguzi to the essential package target of 3.5 utilisations per person per year shows that there would be no additional staff costs required. The current staffing levels in Manguzi seem to be sufficient to provide a comprehensive PHC package of 3.5 visits per person per year.
35
Serruya, Suzanne Jacob. "A experiencia do programa de humanização no pre-natal e nascimento (PHPN) do Ministerio da Saude no Brasil." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313259.
Full textAbstract:
Orientador: Jose Guilherme CecattiTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
Made available in DSpace on 2018-08-03T16:22:12Z (GMT). No. of bitstreams: 1 Serruya_SuzanneJacob_D.pdf: 461898 bytes, checksum: 8be8e442fe381066a0de8333db2aea0c (MD5) Previous issue date: 2003
Doutorado
36
Passos, Anderson Aguiar. "Assistence prenatal in the state of Cearà in perspective the program of humanization in prenatal and birth (phpn)." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1037.
Full textAbstract:
CoordenaÃÃo de AperfeiÃoamento de NÃvel SuperiorConsiderando-se que o acesso das gestantes ao atendimento digno, humanizado e de qualidade à alÃm de um direito, uma necessidade da mulher, o MinistÃrio da SaÃde expressa e oficializa por meio de portarias, a intenÃÃo de investir na atenÃÃo à gravidez, ao parto e ao puerpÃrio, instituindo o Programa de HumanizaÃÃo no PrÃ-natal e Nascimento (PHPN). à um Programa inÃdito, pois consulta ampla na literatura nÃo identificou nenhum outro no formato do PHPN. Ademais, à uma proposta de intervenÃÃo para um paÃs em desenvolvimento; oferece diretrizes para as diferentes instÃncias da assistÃncia; descreve as condiÃÃes mÃnimas para a atenÃÃo com incentivo financeiro atrelado ao cumprimento de tais condiÃÃes; e propÃe um sistema de informaÃÃo (SISPRENATAL), que oferece ao gestor local, monitorar avanÃos e desafios e corrigir falhas. Neste contexto, decidiu-se pela realizaÃÃo do presente estudo que teve como objetivo geral avaliar a qualidade da assistÃncia prÃ-natal no Cearà a partir da implementaÃÃo do PHPN, tendo como objetivos especÃficos avaliar indicadores de processo do PHPN geradores no SISPRENATAL no Estado; analisar aspectos especÃficos da atuaÃÃo do enfermeiro na atenÃÃo prÃ-natal, informados no sistema; e identificar a receita financeira gerado pelo PHPN para o CearÃ. O estudo caracterizou-se como sendo do tipo exploratÃrio e descritivo e teve como universo o Sistema de SaÃde do CearÃ. Parte dos dados foi coletada na CÃlula de InformaÃÃo da Secretaria Estadual da SaÃde por meio de busca no Sistema de InformaÃÃo do PrÃ-Natal e outra parte na Coordenadoria de Controle e AvaliaÃÃo da mesma Secretaria. Os indicadores de processo serviram de subsÃdios para analisar a qualidade da assistÃncia prÃ-natal no CearÃ, no perÃodo de junho de 2001 a agosto de 2006. Ao longo desses seis anos foram notificados 691.001 nascidos vivos (NV) no SISPRENATAL. Contudo, foram detectados apenas 312.507 cadastros de gestantes, ou seja, 44,4% do nÃmero de NV, incluindo gestantes com idade gestacional atà 120 dias entre 2001 a 2003 e a partir de entÃo as gestantes de todas as idades gestacionais. Observou-se aumento crescente nos indicadores de cadastramento precoce das gestantes (<120 dias) no programa, saindo de 88,3%, em 2001, para 96,4%, em 2006. A avaliaÃÃo de todas as condiÃÃes determinadas no Componente I do PHPN, juntas, que define uma melhor qualidade da assistÃncia prÃ-natal prestada, o percentual atingiu 15,67% das gestantes cadastradas. Este resultado foi superior em aproximadamente 50% o resultado encontrado no PaÃs, tendo em vista que a conclusÃo do referido indicador em nÃvel nacional foi de cerca de 10,12% para o mesmo perÃodo. Ficou demonstrado que os Enfermeiros atuam amplamente na assistÃncia prÃ-natal nas unidades bÃsicas de saÃde do Estado, pois 95% dos cadastros de adesÃo de gestantes e 88% das consultas de puerpÃrio foram realizadas por esse profissional. Quanto ao aspecto financeiro ao verificar-se a diferenÃa dos valores de procedimentos que foram realizados e informados no BPA dos municÃpios mas, nÃo tiveram aprovaÃÃo temos um valor total Estadual de R$ 323.040,00. O que se percebe, pelo valor à a possÃvel falta interesse ou atà mesmo o desconhecimento por parte dos gestores, em resolver problemas que geram a desaprovaÃÃo das informaÃÃes e obstruem a arrecadaÃÃo de recursos, diminuÃdo, desta forma, a possibilidade de maiores avanÃos nesta Ãrea. Enfim, com este estudo pÃde-se perceber que se faz necessÃrio uma intensificaÃÃo nas discussÃes entre profissionais, gestores e comunidade, levantando os avanÃos e desafios em cada municÃpio, em cada Ãrea adstrita de PSF, a fim de promover uma visualizaÃÃo das diversas necessidades no campo da assistÃncia prÃ-natal, buscando soluÃÃes viÃveis e eficazes. à inaceitÃvel que uma Ãrea do cuidado tÃo necessÃria e tantas vezes priorizada nas polÃticas pÃblicas de saÃde deste PaÃs ainda padeÃa de negligÃncia pela ausÃncia de garantias tÃo bÃsicas como a realizaÃÃo de exames laboratoriais essenciais, imunizaÃÃo anti-tetÃnica e o seguimento puerperal, realidade detectada no Cearà e tambÃm descrita no cenÃrio nacional. Hà de reconhecer o papel ativo do enfermeiro nessa Ãrea do cuidado e de ser inadiÃvel que gestores municipais se apropriem do processo de financiamento do PHPN e possam minimizar oportunidades perdidas de aquisiÃÃo de recursos.
Pregnant womenâs access to a decent, humanized and qualified service is not only a right, but a womenâs necessity. The Health Department expresses and makes official through regulations, the intention of investing in attention to pregnancy, childbirth and post-delivery, establishing the Program of Humanization in Prenatal and Birth (PHPN). It is an unprecedented program, as a deep search in literature did not identify any other program like PHPN. Besides, it is a proposal of intervention for a country that is in process of development; it offers directives for the different instances of assistance; it describes the minimum conditions for the attention with financial incentive connected to the execution of such conditions; and it suggests an information system (SISPRENATAL), with offers the local administrator to monitor progress and challenges and to correct imperfections. In this context, it was decided to carry out the present study which had as a general objective to evaluate the quality of prenatal assistance in Cearà from the implementation of PHPN on. The specific objectives were to evaluate process indicators of PHPN generator in the SISPRENATAL in the State; to analyze specific aspects of the nurseâs performance in the prenatal attention, informed in the SISPRENATAL; and to identify the financial income produced by PHPN to the state of CearÃ. The study was characterized as exploratory and descriptive and its universe was the Health System of CearÃ. Part of the data was collected in the Information Department of the Health State Secretariat through a search in the Prenatal Information System (SISPRENATAL). The other part was collected in the Coordination of Control and Evaluation of the same Secretariat. The process indicators served as supplementary information to analyze the quality of prenatal assistance in CearÃ, between June, 2001 and August, 2006. Throughout these six years 691.001 live born infants (NV) were notified in the SISPRENATAL. However, only 312.507 registrations of pregnant women were notified, that is, 44,4% of NV, including pregnant women with pregnancy age until 120 days from 2001 to 2003, and from then on women with all pregnancy ages. It was observed a continuous increase in the indicators of pregnant womenâs early registration (<120 days) in the program, from 88,3%, in 2001, to 96,4%, in 2006. In the evaluation of all conditions determined in Component I of PHPN, together, which defines a better quality of prenatal assistance, the percentage reached 15,67% of registered pregnant women. This result was about 50% superior to the result found in the Country, considering that the conclusion of this indicator in national level was about 10,12% in the same period. It was demonstrated that nurses act extensively in prenatal assistance of basic health units of the State, because 95% of pregnant womenâs registration and 88% of post-delivery service were carried out by this professional. Concerning the financial aspect, when we verify the difference of the value of the actions which were carried out and informed at the BPA of the municipalities but were not approved, we have a State total value of R$ 323.040,00. It is noticeable by this value the possible lack of interest or even the lack of Knowledge that governors have when solving problems that produce the disapproval of information and block the collection of resources, what decreases the possibility of greater progress in this area. In conclusion, it was possible to notice through this study that it is necessary to intensify the discussions among professionals, governors and community about progress and challenges in each municipality, in each area of PSF, in other to promote a visualization of several necessities in prenatal assistance and look for possible and effective solutions. It is unacceptable that the area of care which is so necessary and considered many times a priority by public policies suffer because of negligence and absence of basic guarantees like the realization of essential lab exams, anti-tetanus immunization and post-delivery service. This is a reality detected in Cearà and also described in the national scenery. We have to recognize the active role of the nurse in this area of care and that it is urgent that governors of the municipality appropriate the financing process of PHPN and minimize missed opportunities to obtain financial resources for the Health Local System.
37
Quispe, Umpire Madily Graetzel. "Informe jurídico de la sentencia 468/2020 del expediente N° 04417-2016-PHC/TC." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/20096.
Full textAbstract:
La Constitución Política del Perú reconoce en su artículo 149 la función jurisdiccional de
las Comunidades Campesinas y Nativas con el apoyo de las Rondas Campesinas; sin
embargo, en la Sentencia 468/2020 del Tribunal Constitucional, emitida el 23 de julio de
2020, se desconoce las competencias de las Rondas Campesinas al considerar que estas
solo cuentan como apoyo de la función jurisdiccional de las Comunidades Campesinas.
Al respecto, este informe busca demostrar que, de la emisión de esta Sentencia, se ha
vulnerado derechos sobre las Comunidades Campesinas y en el caso en cuestión, sobre la
Ronda Campesina del Caserío Las Malvinas toda vez que se declaró fundada la demanda
de Habeas Corpus impuesta por José Santos Castillo Fernández. Para ello, se realiza el
análisis de las normas nacionales e internacionales vinculantes para el reconocimiento de
las competencias de las Rondas Campesinas en relación a un Estado pluricultural y
además observar la falta de motivación en relación a la vulneración de los derechos sobre
José Santos Castillo Fernández quién fue sancionado por la Comunidad por faltar a la
Asamblea General del Caserío Las Malvinas. Finalmente, en relación a lo observado
sobre la sentencia, objeto de análisis, se determina la escasez de la interculturalidad de la
administración de justicia y las contradicciones del Tribunal Constitucional al desconocer
competencias de las Rondas Campesinas para ejercer jurisdicción dentro de las
Comunidades en las que se desenvuelven.
38
Phan, Van Tung [Verfasser], and T. [Akademischer Betreuer] Böhlke. "Modeling the mesoscopic and macroscopic deformation behavior of the ferritic stainless steel DC04 / Tung Phan Van. Betreuer: T. Böhlke." Karlsruhe : KIT-Bibliothek, 2012. http://d-nb.info/1020663561/34.
Full text
39
Carvalho, Fabrício de. "Efeito de alguns substituintes da 1,10-fenantrolina em corantes sensibilizadores do tipo cis-[Ru(R2-phen)(dcbH2)(NCS)2]." reponame:Repositório Institucional da UFABC, 2014.
Find full textAbstract:
Orientador: Prof. Dr. André Sarto PoloDissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Ciência & Tecnologia - Química, 2014.
O trabalho desenvolvido teve como foco sintetizar compostos tris-heterolepticos de rutenio(II), o cis-[Ru(phen)(dcbH2)(NCS)2], o cis-[Ru(Me2-phen)(dcbH2)(NCS)2] e o cis-[Ru(Ph2-phen)(dcbH2)(NCS)2]. Estes compostos foram sintetizados pela rota one-pot que forneceu rendimentos superiores a 60%. A escolha dos substituintes nas posicoes 4 e 7 da fenantrolina foram feitas com o intuito de analisar o efeito causado por um grupo retirador de eletrons (Ph - fenila) e por um grupo doador de eletrons (Me - metila). Os compostos sintetizados foram caracterizados por analise elementar, espectroscopia eletronica, espectroscopia vibracional, emissao e ressonancia magnetica nuclear de 1H. Pelo espectro vibracional constatou-se que o aumento da densidade eletronica causado pelo grupo doador de eletrons desloca o ¿Þ(CN)NCS para uma regiao de maior energia e apresenta um efeito contrario para o grupo retirador de eletrons. Com o auxilio da ressonancia magnetica nuclear de 1H foi possivel comparar os sinais dos protons H2 e verificou-se que o composto com o substituinte com o grupo doador de eletrons foi deslocado para campo alto em relacao ao composto com o substituinte com o grupo retirador de eletrons. Os grupos substituintes influenciam muito pouco nas propriedades eletronicas dos compostos sintetizados. Os espectros de emissao dos compostos apresentam bandas largas e nao estruturadas, tipicas de emissao proveniente do estado thexi 3MLCT. Os tres compostos foram utilizados como corantes sensibilizadores de celulas solares. Com este trabalho observou-se que pela escolha adequada dos grupos substituintes e possivel modular as propriedades dos corantes sensibilizadores. O desempenho fotoeletroquimico foi avaliado por testes de curvas de corrente potencial e apresentaram os seguintes resultados: cis-[Ru(phen)(dcbH2)(NCS)2]: Voc = 0,733 V, Jsc = 8,67 mA cm-2, ff = 0,61 e £b = 3,78%; cis-[Ru(Me2-phen)(dcbH2)(NCS)2]: Voc = 0,683 V, Jsc = 12,72 mA cm-2, ff = 0,55 e £b = 4,60%; cis-[Ru(Ph2-phen)(dcbH2)(NCS)2]: Voc = 0,738 V, Jsc = 13,28 mA cm-2, ff = 0,63 e £b = 6,18%.
The developed work focused on synthesizing compounds tris-heteroleptic ruthenium(II), cis-[Ru(phen)(dcbH2)(NCS)2], cis-[Ru(Me2-phen)(dcbH2)(NCS)2] and were synthesized cis-[Ru(Ph2-phen)(dcbH2)(NCS)2]. These compounds were synthesized by one-pot route which provided higher yields at 60%. The choice of the substituents at positions 4 and 7 of phenanthroline were made in order to analyze the effect caused by an electron withdrawing group (Ph - phenyl) and an electron donating group (Me - methyl). The synthesized compounds were characterized by elemental analysis, electronic spectroscopy, vibrational spectroscopy, emission and 1H nuclear magnetic resonance. For the vibrational spectrum it was found that increasing the electron density caused by the electron donating group displaces the ¿Þ(CN)NCS for a higher energy region and has an opposite effect to the electron withdrawing group. With the aid of 1H nuclear magnetic resonance was possible to compare the signals of the protons H2, and it was found that the compound of the substituent with electron donating group was shifted upfield compared to the compound with the substituent withdrawing group electrons. The substituent groups very little influence on the electronic properties of the synthesized compounds. Emission spectra of the compounds show broad and unstructured bands, typical of emission from the 3MLCT thexi state. The three compounds were used as sensitizing dyes of solar cells. With this work it was observed that with the appropriate choice of substituents is possible to modulate the properties of the dyes. The photoelectrochemical performance was evaluated by testing current and potential curves showed the following results: cis-[Ru(phen)(dcbH2)(NCS)2]: Voc = 0.733 V, Jsc = 8.67 mA cm- 2, ff = 0.61 and £b = 3.78 %; cis-[Ru(Me2-phen)(dcbH2)(NCS)2]: Voc = 0.683 V, Jsc = 12.72 mA cm-2, ff = 0.55 and £b = 4.60 %; cis-[Ru(Ph2-phen phen)(dcbH2)( NCS)2]: Voc = 0.738 V, Jsc = 13.28 mA cm-2, ff = 0.63 and ç = 6.18 % .
40
Ou, Suk Han. "A study of the photo-oxidation of thymine and thymidine by the NH₄[VO(O₂)₂(5-NO₂phen)] complex." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/533.
Full text
41
Adindu, Anthonia U. "The effect of incongruity on quality of health information systems : Bama, Nigeria PHC case study." Thesis, University of Hull, 1995. http://hydra.hull.ac.uk/resources/hull:3692.
Full textAbstract:
Generally, organisations mobilise information from varying sources on which policies, plans, objectives and organisational management are predicated. indeed, everyone within organisation needs information to perform tasks, it is thus indispensable and its use so pervasive that a methodical approach for collection and processing is imperative. In health care organisations, involved with people and life, this is even of greater significance, in many instances allowable margin of error is narrow and can be devastating.Accurate and reliable information in clinical care for example cannot be compromised.On the other hand, adequate assessment of health services quality,effectiveness and efficiency depends on quality of information generated by the system, that is, accurate, relevant, timely, understandable and complete information. To achieve this, appropriate system design and operation is essential. Adoption of primary health care (PHC), in many developing countries in response to the Global 2000, necessitated establishment of chanisms for monitoring and evaluating effectiveness of services and programmes.Accordingly, in 1986 PHC was adopted in Nigeria, concomitantly, system monitoring and evaluation or the PHC Management Information System was effexted.The information system was envisaged to ameliorate the lack of reliable health information that has persisted since nception of modern health services in Nigeria. Findings in this and other studies indicate that existing health information systems have failed to provide accurate and reliable information, systems of data generation and processing are ineffective.The aim of this was to identify and understand factors that have contributed to the seemingly intractable and insalubrious information problem within the Nigerian health care system. It would be a herculean task for a lone researcher to undertake study of the entire health system, within resource and time limitations, data collection was therefore narrowed to the PHC level. Quality of the PHC management information system was assessed, with Bama Local Government as a case study. Focus was on understanding the information system's structure from a broad perspective to include, policies, objectives,established procedures; physical, material and human resources, in terms of their quality and quantity.Data collection was carried out using both qualitative and quantitative techniques. The structure, process and outcome models provided a framework for in-depth data collection, through observation, interview, review of records and administration of questionnaire, as well as for organisation and analysis of research data. The PHC MIS was followed through, from the village, health facility, local government, state and national levels.Study results suggest general ineffectiveness due to pervasive incongruity in the information system. In the first instance design of the MIS did not reflect information needs of community health workers and the community in general,who to the most part limited appreciation of the MIS structure, objectives to be achieved. Local and regional information need was not delineated, data collected had little relevance to local information needs, resource for systems operation was abysmal, skilled personnel and training provided severely inadequate.Consequently, data collection and processing was hampered, information produced often inaccurate, untimely, immense, irrelevant and unreliable. Data collected were neither analysed nor utilised. The information system was short of being integrated since 60% of functional units within the PHC department as well as related health organisations in the community ran parallel information systems.Research data point to serious incongruity in the organisation and management of the information system. Incongruity that resulted from factors within the organisation as well derived from events within the wider social environment, which however culminated in an effective and dysfunctional information system.Chapters one to three of the thesis deal with conceptual issues related to management information systems, organisational design and quality respectively. In chapter four methodological issues surrounding data collection were discussed. Empirical data and analysis are presented are presented in chapters five to seven. In chapter eight, an attempt was made to develop a model of organisational incongruity, applied to explicate research findings.Chapter nine focuses on measures toward establishment of an effective PHC information system in Nigeria, contributions of this study and suggestions for future research.
42
Weare, Andrea M. "Beauty work : a case study of digital video production and postfeminist practices on YouTube's Icon Network." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/3213.
Full textAbstract:
This dissertation study explored women's labor in the beauty industries of the YouTube vlogosphere, specifically beauty video production on the ICON network, the beauty and lifestyle channel of YouTube entrepreneur Michelle Phan. Via a case study of ICON's YouTube creators and their video production, this dissertation explored female digital labor by interrogating gender, ethnicity, bodies, and power to address two interconnected elements situated particularly in the YouTube vlogosphere: beauty and entrepreneurship. The study's key research questions asked: In the transnational world of digital employment, what are the material and ideological complexities of beauty YouTubers' experiences? And how do YouTubers interpret their technical production, their beauty ideologies, their power, their authenticity, and the material outcomes of their production for themselves and others? Following an analysis of ICON as a company, interviews with its management and video creators, and its video products, the case study's findings reveal that while ICON recruits beauty creators to market on behalf of its retail partners, the creators see themselves as entrepreneurs who negotiate their own stances regarding their beauty ideals, user-generated content, (post)feminisms, and online authenticity.
43
Gladwin, Jean. "An informational approach to health management in low-income countries." Thesis, University of Sheffield, 1999. http://etheses.whiterose.ac.uk/3491/.
Full textAbstract:
This thesis investigates the introduction of new information management strategies intended to promote an informational approach to management at the operational health service level in low-income countries. There is a lack of in-depth empirical research into the health information systems planning and implementation process in low-income countries which develops an understanding based on existing theory and research. Furthermore, a training package for managers, which is intended to strengthen health information management in low-income countries, has been introduced without independent evaluation. In order to understand the practice and attempts at improving information support to district level management in low-income countries, two ethnographic case studies are presented. The first follows the introduction of PHC MAP, the package mentioned, and the second follows the implementation of a non- computer-based health management information system in Uganda. The research methodology is informed by several approaches which fit within the interpretative, rather than the positivist tradition. Hence, the research question developed from the desire to understand and examine empirical situations. Furthermore, an exploratory approach was utilised rather than identifying theoretical frameworks prior to the field investigation. After the initial fieldwork, the diffusion of innovation framework, the concept of organisational forces existing in dynamic equilibrium, and different information systems development methodologies proved useful in interpreting the evidence collected. My research indicates that the design of PHC MAP and the health management information system focused on technological issues, to the detriment of the wider issues of technological innovation management, and organisational change. The implications of this research, for the practice of introducing new information strategies in order to develop an informational approach to management, are explored.
44
Coovadia, Mohamed Yusuf. "Identification and evaluation of patient satisfaction determinants in medical service delivery systems within the South African private healthcare industry." Diss., University of Pretoria, 2008. http://hdl.handle.net/2263/23094.
Full textAbstract:
The aim of the study was to identify, evaluate and compare the determinants of patient satisfaction in fee-for-service, and health maintenance organisation (HMO), medical service delivery centres. Staff at both centres, who were also patients, were surveyed to determine the congruence with patients’ quality improvement priorities. The survey was conducted using a questionnaire consisting of closed questions given to patients as they departed from the medical centres. The questionnaire was tested for convergent and divergent validity, content analysis and reliability. A rating scale was then applied to yield the scores for each determinant. The unique Patient Satisfaction Priority Index was determined using determinants that were rated low on satisfaction but high on importance. The results revealed that patients at the fee- for- service medical centre were significantly more satisfied than patients at the HMO. The priority index for patients were found to be different to that of the staff at both medical centres, proving that staff and patient priorities were incongruent. Accordingly, the recommendations were that patient satisfaction be continuously evaluated at medical service delivery centres, in order to achieve a competitive advantage, sustainability and growth in South Africa’s highly competitive private healthcare industry. CopyrightDissertation (MBA)--University of Pretoria, 2010.
Gordon Institute of Business Science (GIBS)
unrestricted
45
Phan, Tan Thanh-Thu [Verfasser]. "Integration von Schlüsselkompetenzen im Englischstudium durch E-Learning : eine empirische Fallanalyse am Beispiel eines englischen Seminars / Thanh-Thu Phan Tan." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/100089312X/34.
Full text
46
Ruangpratheep, Chetana. "Aberrations of DPPA3 (STELLA), EDR1 (PHC1), GDF3, and NANOG, putative stem cell-associated genes on chromosome 12, in breast carcinoma." Thesis, University of Leicester, 2012. http://hdl.handle.net/2381/10944.
Full textAbstract:
Introduction: Chromosome 12p13 has been reported to show gain/amplification in some breast cancers. This region contains putative stem cell-associated genes: DPPA3, EDR1, GDF3, and NANOG, but these genes have not been investigated in breast previously. Hence, the aim of this thesis was to study their role in breast carcinomas. Materials and methods: The mRNA expression was evaluated in normal and malignant breast tissues using TaqMan® gene expression assays. Western blotting and immunohistochemistry were used for determination of protein expression. Copy number variations (CNVs) were assessed by TaqMan® copy number assays (CNAs) and Affymetrix® genome-wide human single nucleotide polymorphism (SNP) array 6.0. Results: Expression of DPPA3, EDR1, and NANOG was undetectable in normal breast tissue, but there was variable expression in breast carcinomas (BC) where expression of these genes tended to be higher in surrounding normal breast tissue. GDF3 was not expressed in BC. At the 95% confidence interval, higher expression of DPPA3 in BC was related to axillary lymph node metastasis; lower expression of DPPA3, EDR1, and NANOG correlated with high grade; and lower expression of NANOG was found in tumours of size > 2.0 cm. Both TaqMan® CNAs targeting each gene individually and SNP 6.0 genome wide array revealed complicated patterns of CNVs for these genes. The majority of BC had gain of DPPA3 but loss (deletion) of EDR1 and NANOG. However, there was no significant correlation between CNVs and either mRNA expression or protein expression. Conclusion: Variable aberrations in copy number and expression of DPPA3, EDR1, and NANOG genes in the chromosome 12p13 region are associated with aggressive characteristics of breast carcinomas.
47
Ellingsworth, Edward Chrisler. "Spectroscopic, structural, and electrical characterization of thin films vapor-deposited from the spin-crossover complex Fe(phen) 2(NCS)2." Thesis, The University of Alabama, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3711545.
Full textAbstract:
Thin films (~100 nm) have been prepared of the prototypical spin-crossover complex Fe(phen)2(NCS)2 (phen = 1,10-phenanthroline). Initial attempts to prepare these films by direct vapor deposition yielded films of a different material. Through extensive FT-IR, Raman, UV-Vis, and x-ray photoelectron spectroscopy it is shown that these as-deposited films are the ferroin-based tris complex [Fe(phen)3](SCN)2. Structural characterization by AFM and powder XRD reveals them to be smooth and amorphous. When heated, the [Fe(phen)3](SCN)2 films are converted first to Fe(phen)2(SCN)2 and then to a third species postulated to be Fe(phen)(NCS)2 which is likely a one-dimensional coordination polymer. On the other hand, deposition from Fe(phen) 2(NCS)2 onto heated substrates produces a mixture of these three materials. The identity of the Fe(phen)2(NCS)2 films is proved by additional spectroscopic, structural, and magnetic characterization. Magnetometry reveals them to remain spin-crossover active albeit with a more gradual and incomplete spin-transition than the bulk material. The films are found to be granular in nature and deep crevices were observed at the grain boundaries. Within the optical microscope, the coloring of the grains is seen to be dependent upon sample orientation. Powder XRD indicates texturing of crystalline domains where the crystallographic c-axis is parallel to the surface normal. This represents a new process for production of Fe(phen)2(NCS) 2 films.
With the aim of realizing the potential for spin-crossover materials to modulate electrical conduction and vise versa, electrical characterization has been performed as a function of temperature on vertical junction devices incorporating the prepared Fe(phen)2(NCS)2 films. In order to prevent penetration of the top electrode through the cracks and crevices in the organometallic layer, a multiple sequential deposition and annealing process was developed to produce films with a continuous surface topography. A small change in the weak electrical conductivity of these devices appears at the spin transition temperature, demonstrating for the first time in this important material a coupling of the electrical conductivity and magnetic spin state. Here, the HS state has a higher electrical conductivity. Incorporation of LiF interfacial layers between the Fe(phen)2(NCS)2 and the metal electrodes improves conduction slightly but tunneling still appears to be the current-limiting mechanism. Electrical measurements were also performed on devices made with the related complex [Fe(phen)3](SCN) 2. Such films were much more conductive—as good as other typical organic semiconductor materials. All together, this work establishes the potential for this family of complexes to be incorporated into thin-film based electrical devices whose operation is based on the spin-crossover effect or otherwise.
48
Phan, Duy Dũng [Verfasser], Michael [Gutachter] Stintz, Ginaurelio [Gutachter] Cuniberti, and Andreas [Gutachter] Seidel-Morgenstern. "Modelling and Evaluation of Fixed-Bed Photocatalytic Membrane Reactors / Duy Dũng Phan ; Gutachter: Michael Stintz, Ginaurelio Cuniberti, Andreas Seidel-Morgenstern." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1226946429/34.
Full text
49
Van, Haesebroeck Élise. "Identité(s) et territoire du théâtre politique contemporain : le Groupe Merci, le Phun, le Théâtre du Radeau et Claude Régy." Toulouse 2, 2008. http://www.theses.fr/2008TOU20110.
Full textAbstract:
Comment définir l'identité - ou les identités - du théâtre politique contemporain et quelles sont les limites de son territoire ? Notre démarche est guidée par le désir de réhabiliter le terme politique en le sortant de ses acceptions héritées des années soixante-dix, c'est-à-dire le politique pensé comme dogmatique. Repenser le politique afin de le rétablir dans son sens noble d'« agir ensemble ». Concevoir le théâtre non pas comme ce qui réfléchit la politique mais, au contraire, comme ce qui la troue. Il ressort de notre réflexion que le théâtre politique contemporain s'attache à montrer les limites de la politique - de son omnipotence ou de sa négation -, et de ce qui fait que la politique s'évertue à éliminer le politique. En tant que représentants de ce théâtre en France, le Groupe Merci, Le Phun, le Théâtre du Radeau et Claude Régy bâtissent un théâtre anti-dogmatique, et par-là même, profondément subversif. Ils opèrent une révolution esthétique en bousculant, selon des démarches très différentes, l'ordre de la représentation, ordre qui se définit essentiellement par un certain rapport entre le dicible et le visible. Ainsi, dans le théâtre du Groupe Merci et celui du Phun, la parole ne fait pas voir. Elle est ce qui tient le spectateur en éveil et l'empêche de se simplifier. Chez Claude Régy et François Tanguy, la parole - devenue oraculaire - fait passer le spectateur de l'ordre du visible à celui du visuel. Le territoire du théâtre politique contemporain regroupe donc les formes théâtrales qui, en altérant la perception du spectateur, s'adressent à lui non pas comme à un membre du public - en tant qu'ensemble connu à l'avance - mais comme à un poète. Un tel théâtre nous paraît nécessaire parce qu'il permet à l'individu d'établir un contact avec le Réel sans jamais le réduire ni le maîtriser. Il appartient ainsi à cet art dont parle Godard lorsqu'il dit que « l'art c'est ce qui vous permet de vous retourner en arrière, et de voir Sodome et Gomorrhe sans mourir»(Godard, J. L. , entretien avec D. Pana et G. Scarpetta, Art Press, numéro spécial Godard, février 1985)How to define the identity - or the identities - of the contemporary political theater and where are the borders of its territory ? We shall discuss the notion of political and try to rehabilitate it in a different way than a synonym of dogmatic. Our conclusions reveal that the contemporary political theater does not reflect politics but questions it. It takes particular care to display the limits of the politics - of its omnipotence or of its negation -, and to show how the politics tries to eliminate the political. As French representatives of this theater, , the Groupe MERCI, the PHUN, the Théâtre du RADEAU and Claude REGY build a non-dogmatic and, thus, deeply subversive theater. They carry out an esthetic revolution by changing the order of the theatral representation and particularly the relation between the speakable and the visible. The territory of the contemporary political theater rallies the forms which inflect the spectator's perception and consider him not as a simple member of the audience but as a poet. This theater allows the spectator to be in touch with Reality without reducing or controlling it. Thus, it belongs to this Art described by Godard when he said that « Art let you go back and see Sodome and Gomorrhe without dying »(Godard, J. L. , entretien avec D. Pana et G. Scarpetta, Art Press, numéro spécial Godard, février 1985)
50
Gueddida, Saber. "Etude théorique de la transition de spin dans la molécule Fe(phen)2(NCS)2 adsorbée sur des surfaces métalliques." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE013/document.
Full textAbstract:
L’objectif principal de cette thèse est d’utiliser le calcul ab initio fondé sur la théorie de la densité fonctionnelle (DFT) pour calculer et comprendre la transition HS-BS de la molécule FePhen adsorbée sur un substrat métallique. Il s’agit d’abord de décrire les interactions entre FePhen et un substrat métallique ferromagnétique, comme le Co, ou un substrat paramagnétique comme l’or ou le cuivre. Nous avons calculé la barrière de potentiel nécessaire pour basculer la molécule de l’état BS à l’état HS en utilisant la méthode ’Nudged Elastic Band’ (NEB) et développé une méthode basée sur les principes de la méthode NEB, pour déterminer la trajectoire d’énergie minimale (TEM) de la molécule adsorbée sur un substrat métallique. Nous avons calculé le couplage ferromagnétique entre la molécule et le cobalt en fonction du nombre de couches intermédiaires de cuivre. Nous avons étudié en particulier (1) le rôle joué par les interactions van der Waals, (2) la modélisation de la microscopie à effet tunnel (STM) et (3) les propriétés de transport. Nous avons calculé les images STM en utilisant l’approximation de Tersoff et Hamann, qui montrent un bon accord avec les résultats expérimentaux. Nous vons étudié les propriétés de transport de la molécule FePhen adsorbée sur une surface métallique, en utilisant le code Smeagol basé sur la méthode des fonctions de Green hors-équilibre, et le formalisme de LandauerThe main objective of this PhD thesis is to use ab initio methods based on DFT to calculate and understand the mechanism of spin crossover phenomena in FePhen molecule adsorbed on a metallic substrate. We studied the structural, electronic and magnetic properties of the free and adsorbed FePhen molecule on a ferromagnetic metal substrate, such as cobalt, or a paramagnetic substrate such as gold or copper. We calculated the energy barrier required for the molecule to switch from low-spin to high-spin states using the ’Nudged Elastic Band’ (NEB) method. We also computed the ferromagnetic coupling between two magnetic layers, the magnetic FePhen molecule and the cobalt substrate according to the number of non-magnetic intermediate layer of copper. The focus is mainly on (1) the role played by van der Waals interactions, (2) the modeling of scanning tunneling microscopy (STM) and (3) the transport properties. We calculated the STM images using the Tersoff-Hamann approximation, which showed a good agreement with recent experimental STM images. We studied the transport properties of the adsorbed molecule FePhen on a metallic surface, using the Smeagol code which is based on the non-equilibrium Green’s function and Landauer formalism