55 research outputs found

    Rol de la autofagia inducida por déficit nutricional en la briofita Physcomitrella patens.

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    Tesina (Grado en Ciencias Biológicas)--Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Lugar de Trabajo: Cátedra de Fisiología Vegetal. Facultad de Ciencias Exactas, Físicas y Naturales. Universidad Nacional de Córdoba. 2019. 56 h. con Anexos. tabls.; grafs. Contiene Referencia Bibliográfica.La autofagia es una de las principales vías de degradación de proteínas y componentes celulares y es un proceso fundamental para el mantenimiento de la homeostasis celular en organismos eucariotas. En plantas, diversos estudios con mutantes en los genes ATG (AuTophagic Genes) evidencian que defectos en la autofagia comprometen la viabilidad, crecimiento, desarrollo, productividad y respuestas a condiciones de estrés abiótico y biótico. Por otra parte, se observa sobrevida y mayor productividad cuando el proceso es aumentado con respecto a sus niveles normales. La utilización de Physcomitrella patens como modelo para el estudio de autofagia es recientes y se conoce poco en comparación con otros modelos vegetales. En este trabajo se aporta un análisis filogenético de las proteínas ATG8 de P. patens con respecto a otros organismos dentro del clado Viridiplantae, los resultados sugieren que la función se encuentra conservada dentro del grupo. Se realizó también un seguimiento de la evolución de la inducción del proceso en condiciones de déficit nutricional de Carbono y Nitrógeno, utilizando una línea reportera ATG8:GFP. También se estudió el efecto de estas mismas condiciones sobre líneas knockout para autofagia atg5 y atg7. Las mutantes resultaron hipersensibles al estrés y mostraron desbalances metabólicos en condiciones óptimas de crecimiento. Con este trabajo se demuestra que la autofagia cumple un rol fundamental en la supervivencia de P.patens frente al déficit de Carbono y Nitrógeno y se sientan las bases para estudiar autofagia en este musgo , que aporta una perspectiva innovadora por sus múltiples características

    A trajetória de desenvolvimento Russa: da transição sistêmica ao nacionalismo dos recursos naturais

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    Analisa as mudança da inserção externa da Rússia pós-soviética, ressaltando os fatores da fragilidade externa da economia neste período, perpassando a transição sistêmica implementada pelo governo Iéltsin, suas conseqüências econômicas e institucionais, a crise de 1998 e o reerguimento do Estado e da economia implementado a partir de Primakov e intensificado pelo governo de Vladimir Putin

    Testamentary competence: defining functional abilities

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    Functional legal capacities are an essential part of any legal competency. In the area of testamentary competence, however, there has been almost no research focusing on such capacities. This study examines empirically the functional capacities associated with testamentary competence. A total of 332 doctoral-level psychologists selected for their experience in forensic psychology or aging were administered a vignette describing a woman who wants to make a will. The vignette systematically manipulated the variables (a) knowing that the will transfers property, (b) knowing important assets owned, (c) able to name heirs and detail relationship, and (d) able to explain a non-delusional rationale. Participants answered additional questions regarding relevant variables associated with testamentary competence. Results provided support for the hypothesis that the testator’s knowledge of transfer, important assets, ability to name heirs and relationship, and ability to express a non-delusional rationale positively related to a finding of testamentary competence. Further, a number of additional factors were indentified that could be useful in future research.Ph.D., Clinical Psychology -- Drexel University, 200

    Infant mental health home visiting therapists- reflective supervision self- efficacy in community practice settings

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    In recent years, there has been an increase in the research on reflective supervision, including the development of tools designed to measure reflective practice in the context of reflective supervision. The Reflective Supervision Self- Efficacy Scale for Supervisees (RSSESS) is a self- report measure that has been used in previous evaluations and is designed to assess perceived reflective practice self- efficacy for Infant Mental Health- Home Visiting (IMH- HV) therapists. Properties of the RSSESS including factor structure and reliability are explored in a first study that lays the foundation for the use of the RSSESS in an IMH- HV evaluation in the State of Michigan. IMH- HV therapists completed the RSSESS at 4 time points over a 12- month period and also completed a Clinician Profile Form that included questions about their IMH background and their work experience, including job satisfaction and burnout. Results indicated that the RSSESS is a reliable tool to measure change in reflective practice skills. IMH- HV therapists demonstrated growth in their use of reflective practice skills with families and their observational skills over the 12- month period. In addition, results indicated correlations between reflective supervision self- efficacy and job satisfaction as well as burnout.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/154909/1/imhj21834.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/154909/2/imhj21834_am.pd
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