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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Characterization of Putative ExbB and ExbD Leads to the Identification of a Potential Tol-Pal System in Rhizobium leguminosarum ATCC 14479

Barisic, Valeria 01 May 2015 (has links)
Rhizobium leguminosarum is a Gram negative nitrogen-fixing soil bacterium. Due to the limited bioavailability of iron, bacteria utilize siderophores that scavenge and bind available iron. The transport of iron-siderophore complexes is achieved by the TonB-ExbB-ExbD complex. We have previously shown that a functional TonB protein is necessary for iron transport by creating ΔtonB mutants and assessing their growth and 55Fe-siderophore transport ability. We attempted to identify and characterize the roles of putative exbB and exbD genes using a similar approach. Growth curves and sequence analyses suggest putative exbB and exbD may be the tolpal-associated genes tolQ and tolR. Phenotypic and sensitivity assays showed mutants do not exhibit the characteristic tol phenotype and are not sensitive to detergents or changes in ionic strength of the growth medium. We also expressed and purified the 120 amino acid fragment of the TonB C-terminus for further physical and chemical characterization.
2

Functional complementation of <i>ΔexbD E. coli</i> by homologous <i>exbD</i> genes

Butler, Kate Ann 20 November 2013 (has links)
No description available.
3

Identification of Potential TonB-Interactive Sites in the Periplasmic Domain of the ExbD Protein

Cholewa, Kelly M. 18 November 2016 (has links)
No description available.
4

Contribuições da integração do design baseado em evidências e experiências para um projeto em design de serviços no contexto hospitalar

Rosa, Mirela Sousa da 26 March 2013 (has links)
Submitted by Maicon Juliano Schmidt (maicons) on 2015-05-08T19:40:28Z No. of bitstreams: 1 Mirela Rosa.pdf: 33214432 bytes, checksum: 6b8afee33b9a338a882f4914815741d2 (MD5) / Made available in DSpace on 2015-05-08T19:40:28Z (GMT). No. of bitstreams: 1 Mirela Rosa.pdf: 33214432 bytes, checksum: 6b8afee33b9a338a882f4914815741d2 (MD5) Previous issue date: 2013-01-31 / Nenhuma / O Design de Serviços é constituído de uma metodologia que utiliza um conjunto de ferramentas que permitem projetar soluções para melhorar a percepção dos usuários sobre os serviços, que podem ser aplicadas em diversas áreas e contextos. Conforme a complexidade de cada setor, se torna necessário considerar abordagens de projeto que tornariam os resultados desta metodologia mais eficazes e mensuráveis, como é o caso da Saúde. Alguns autores que vêm pesquisando a aplicação neste setor, sugerem uma possível integração do Design baseado em evidências (DBE) e do Design baseado em experiências (DBEx) para viabilizar que um projeto orientado pelo usuário seja implementado em larga escala. Em busca da investigação sobre a lógica de evidências, foi estudada uma ferramenta utilizada no setor de serviços chamada Mecanismo da Função Produção (MFP), que prevê a quantificação das perdas dos processos. O presente estudo teve como contexto o Intensivismo Adulto (CTI) de um hospital privado em Porto Alegre e aplicou um caso em Design de Serviços com a lógica das evidências através da ferramenta MFP, para o desenvolvimento de uma abordagem integrada. Foi utilizado o método de pesquisa-ação com a descrição de todo o processo de projeto e dos resultados obtidos. A partir das análises pode-se constatar que (i) o olhar das evidências contribui para replicações dos resultados do projeto em casos futuros, (ii) o MFP pode ser um argumento para justificar a realização de um projeto em Design e (iii) para a integração das experiências com as evidências no setor hospitalar, pode-se gerenciar o projeto de modo a destinar um tempo maior para o diagnóstico e para a implementação. / Service Design consists of a methodology that uses a set of tools to create solutions to improve users perception on services, which can be applied in many fields and contexts. As the complexity of each field, it is necessary to consider approaches that would make results of this methodology more effective and measurable, such as health sector. Some authors have been research application of Service Design in this sector, and suggest a possible integration of evidence-based design (EBD) and experience-based design (ExBD) to enable a user-oriented design on a large scale implementation. In search on the logic of evidence, we studied a tool used in service sector called Mechanism of the Production Function, that provides quantification of loss processes. The present study was context in Intensive Care Unit (ICU) of a private hospital in Porto Alegre and applied a case of Service Design with the logic of the evidence through MFP tool for the development of an integrated approach. We used the method of action research with the description of the whole design process and results. From the analysis it was found that (i) the look of the evidence contributes to replication of project outcomes in future cases, (ii) MFP is an argument supporting the realization of a Design project and (iii) to integrate experiences with evidence in the hospital sector, we can manage the project in order to devote more time to the diagnosis and implementation.

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