951 resultados para Doble Acusación


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549 pp. (Bibliogr. pp. 501-522) (Conclusiones pp. 467-483/ Conclusions pp. 484-497)

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202 p. El contenido de los capítulos 3,4,5 y 6 está sujeto a confidencialidad

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Umeen garapen psikologikoan bi oinarrizko faktorek eragiten dute, besteak beste: familia eta eskola. Hortaz, familia hain garrantzitsua izanda, horren kulturak lehen mailako papera hartzen du garapen horretan. Kultura ijitoa ikerketaren oinarri bezala hartuta, beharrezkoa da ume horien egoera behatzea. Hori dela eta, lan honek objektibo bikoitza dauka: kultura ijitoaren ohiturak zein eskolarekiko duen harremana ezagutzea eta eskolaratze arrakastatsuaren klabeak lortzea. Eskola, gizartearen ordezkari bezala, pertsona guztien eskubideak betetzen dituen berdintasunezko gizarteak sortzeko oinarrizko eta erantzukizunezko bidea da.

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[eus] Lan honen ikerkuntza gaia sormena da. Ibilbide honetan, sormena ardatz eta oinarri hartuz, DBH-ko Marrazketa Teknikoko ikasleek Haur Hezkuntzako umeentzat bideratutako Formak jokoa asmatu dute. Bi erronka nagusi izan ditu lan honek: alde batetik, DBH-ko ikasleekin batera, aholkulari lanak eginez, jokoa eraikitzeko prozesu sortzaile bat aurrera eramatea. Bestetik, HH-ko umeentzat joko sortzaile bat formulatzea. Joko honen helburu nagusiena pertsona guztiengan existitzen den sormen gaitasuna bultzatzea, sustatzea eta garatzea izan delarik. Bidean azaldu diren erronkei aurre egin eta konponbidea topatzerako orduan, egilearen Haur zein Bigarren hezkuntzako hezitzaile perfil bikoitza ezinbesteko tresna izan da. Ikuspuntu bikoitz honek, sormenaren txertatzea hezkuntzako fase bakoitzari egokitzea ahalbidetu du, hezkuntza prozesu globala dela argi izanik.

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La membrana biológica es una barrera hidrofóbica semipermeable de naturaleza compleja, cuya estructura consiste en una doble capa de moléculas de lípidos en la cual las proteínas están insertadas. Existen diferentes modelos para su estudio, uno de los cuales se basa en la utilización de membranas modelo. Por otra parte, la radioterapia es uno de los principales tratamientos para los distintos tipos de cáncer. En este trabajo se estudia el efecto de la radiación ionizante sobre la permeabilidad de membranas modelo, con objeto de comprender los mecanismos de su acción sobre dicho tratamiento.

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Although there have been great advances in our understanding of the bacterial cytoskeleton, major gaps remain in our knowledge of its importance to virulence. In this study we have explored the contribution of the bacterial cytoskeleton to the ability of Salmonella to express and assemble virulence factors and cause disease. The bacterial actin-like protein MreB polymerises into helical filaments and interacts with other cytoskeletal elements including MreC to control cell-shape. As mreB appears to be an essential gene, we have constructed a viable ΔmreC depletion mutant in Salmonella. Using a broad range of independent biochemical, fluorescence and phenotypic screens we provide evidence that the Salmonella pathogenicity island-1 type three secretion system (SPI1-T3SS) and flagella systems are down-regulated in the absence of MreC. In contrast the SPI-2 T3SS appears to remain functional. The phenotypes have been further validated using a chemical genetic approach to disrupt the functionality of MreB. Although the fitness of ΔmreC is reduced in vivo, we observed that this defect does not completely abrogate the ability of Salmonella to cause disease systemically. By forcing on expression of flagella and SPI-1 T3SS in trans with the master regulators FlhDC and HilA, it is clear that the cytoskeleton is dispensable for the assembly of these structures but essential for their expression. As two-component systems are involved in sensing and adapting to environmental and cell surface signals, we have constructed and screened a panel of such mutants and identified the sensor kinase RcsC as a key phenotypic regulator in ΔmreC. Further genetic analysis revealed the importance of the Rcs two-component system in modulating the expression of these virulence factors. Collectively, these results suggest that expression of virulence genes might be directly coordinated with cytoskeletal integrity, and this regulation is mediated by the two-component system sensor kinase RcsC.

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Colofón en v.1, v.2, v.5, v.6, y v.7.

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19 hojas : ilustraciones, fotografías