Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

La présence de bactéries et biofilms est une préoccupation permanente dans de nombreux domaines. Ils sont à l’origine de nombreux faits d’actualité qui ont un coût important pour le système de santé. L’objectif de notre travail visait à élaborer des films nanocomposite transparents contenant des particules métalliques nanométriques d'élément antibactérien (Ag ou Cu) immergées dans une matrice d’oxyde (TiO₂). La méthode de dépôt DLI-MOCVD (Direct Liquid Injection-Metal Organic Chemical Vapor Deposition) a été employée pour élaborer les films composites. Ce procédé permet le contrôle de la fraction molaire des précurseurs injectés dans le réacteur CVD et de revêtir des supports 3D (poreux). La croissance et la structure du dioxyde de titane (TiO₂) sont influencées par la présence du précurseur contenant l’élément antibactérien. La fraction molaire du précurseur (Ag ou Cu) modifie les caractéristiques physico chimiques et structurales des dépôts. L'activité antibactérienne est mesurée selon la norme JIS Z 2801:2000 avec S. aureus et E. coli en l’absence de lumière. Des essais antibactériens spécifiques ont été optimisés afin d'évaluer leur activité proche de condition réelle. La composition des dépôts influence fortement l’activité antibactérienne d’inactif à bactéricide. Des corrélations entre la microstructure et la composition des films et leurs propriétés antibactériennes sont discutées. / The presence of bacteria and biofilms is permanent concern in many fields. Their presences are at the origin of many events which have high costs for the health system. In this objective, this work aimed to elaborate transparent nanocomposite thin films which are composed of nanometric metallic particles of antibacterial element (Ag or Cu) embedded in an oxide matrix (TiO₂). The DLI-MOCVD process (Direct Liquid Injection-Metal Organic Chemical Vapour Deposition) was used to elaborate these thin films. This process allows the quantity of precursors injected into the CVD reactor to be controlled and porous body to be coated. The growth mechanisms and the structure of the Titanium dioxide (TiO₂) are influenced by the presence of the organic precursor which contains the antibacterial element. The mole fraction of precursor (Ag or Cu) modifies the physico-chemical and structural properties of films. The antibacterial activity was tested according to the standard JIS Z 2801: 2000 with S. aureus and E. coli without light Specific tests were optimised in order to evaluate their activity in environments more representative. The composition of coatings impacts strongly the antibacterial activities from inactive to bactericidal properties. Correlations between the microstructure and composition of films and their antibacterial properties are discussed.

In this master thesis we introduce algebraic geometry codes (AG codes). Be- sides basic definitions, properties and attributes of AG codes and algebraic ge- ometry we show how to encode AG codes that has nontrivial Abelian group of permutation automorphisms and how to decode one-point AG codes. We also present Hermitian codes, which are example of one-point AG codes with nontriv- ial Abelian group of permutation automorphisms. We demonstrate the method for encoding and the method for decoding on specific Hermitian code. 1

Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-06-30T18:10:12Z No. of bitstreams: 1 DIS_RENAN_CARVALHO_FAGUNDES_COMPLETO.pdf: 1727455 bytes, checksum: 12c45249aec873c781ab55423b935a27 (MD5) / Made available in DSpace on 2017-06-30T18:10:12Z (GMT). No. of bitstreams: 1 DIS_RENAN_CARVALHO_FAGUNDES_COMPLETO.pdf: 1727455 bytes, checksum: 12c45249aec873c781ab55423b935a27 (MD5) Previous issue date: 2017-03-31 / This work will focus on the role of religious groups in hospital settings, in order to know how to organize, how to work in the hospital in the practice of spiritual assistance to inpatients in particular examine in detail the real interests of these, and their social relationships with patients and families employees. It analyze the importance of the secular state to the plurality of religious groups in hospitals. Through the data obtained by observation and interviews with religious analyze the importance of these activities in hospital settings as well as the interest of some groups in converting the sick to their religion considered by them the ideal and real. / O presente trabalho versar? sobre a atua??o de grupos religiosos em ambientes hospitalares, no sentido de conhecer como se organizam, como atuam no ambiente hospitalar na pr?tica da assist?ncia espiritual aos pacientes internados. E em especial, analisar suas rela??es sociais com funcion?rios, pacientes, familiares e refletir sobre a import?ncia do Estado laico para a pluralidade de grupos religiosos nos hospitais. Atrav?s dos dados obtidos por observa??o e entrevistas com os religiosos analisou-se a relev?ncia destas atividades nos ambientes hospitalares, bem como o interesse de alguns grupos em converter os enfermos para sua religi?o considerada por eles a ideal e verdadeira.

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Volunteers play a critical role to Extension by assisting with program planning, provide input and guidance in what direction local Extension programs should take, and provide assistance with program implementation and evaluation. Extension volunteers have been utilized in Extension for over 50 years, serving on program area committees to develop programs that meet the needs of local clientele. This study evaluated Agriculture and Natural Resource Program Area Committee (Ag/NR PAC) members located in 36 Texas counties. The selection of counties was based upon Texas AgriLife Extension Service county categories. A quantitative, ex post facto, survey instrument was developed that consisted of Likert type statements that focused on the purpose, responsibilities, qualifications, time obligations, County Extension Agent interaction, subject matter specialist interactions and assisting with educational event implementation and evaluation. The survey was mailed with a postage paid return envelope and return surveys were accepted for 45 days. The data was analyzed using SPSS 16.0 for Windows software. The findings of this study showed that Ag/NR PAC members have an overall understanding of the purpose, responsibilities and qualifications of PAC's. Overall, the data shows that County Extension Agents are remaining involved with the program area committees. However, 42 percent of the respondents disagreed or remained neutral to subject matter specialists being utilized in committee meetings. The open ended questions show that program area committee members consider personnel education as a motivational factor for serving on the Ag/NR committees. Committee members feel strongly about assisting with program planning and attending the educational programs but are not remaining actively involved in the evaluation or interpretation phase of the programs. The findings of this study resulted in seven associated recommendations related to working with Ag/NR PAC's. In addition, six areas were identified for areas of research to be considered for the future. The results found that Ag/NR PAC's are still a crucial part of Texas AgriLife Extension Service and they play an important role in identifying issues at the local level. The information found within the study will contribute to working with volunteers to enhance the program planning process.

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