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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

Fatores de risco à senilidade na transição à aposentadoria / Seniliy risk factors upon retirement transition

Canizares, Juan Carlos Lara 14 December 2009 (has links)
A aposentadoria, raramente estudada como um fator de risco à senilidade, passa muitas vezes despercebida na sua importância patogênica, gerando um processo de perdas que se relaciona com o envelhecimento patológico. Este estudo objetivou apontar a relação entre a aposentadoria e os fatores de risco para a senilidade em profissionais de um hospital de grande porte da cidade de São Paulo (que se encontravam na transição à aposentadoria), correlacionar os fatores de riscos detectados com as variáveis: gênero, idade, escolaridade, nível de autoridade no cargo e apontar a possibilidade de intervenções que possam minimizá-los. Trata-se de um estudo descrito como uma pesquisa transversal, aplicada, de abordagem qualitativa e quantitativa, que visa à descrição e à análise da correlação das variáveis apontadas com fatores psicológicos e sociais da aposentadoria. Os resultados do estudo mostraram que há correlação entre perspectivas da aposentadoria e fatores de risco identificados (diminuição da renda e benefícios associados ao trabalho, sentimento de vazio, estresse e ansiedade), sendo a possibilidade de diminuição da renda a principal causa de preocupação. A aposentadoria é um evento da vida que pode produzir instabilidade emocional com consequências nocivas ao futuro; quanto menor for a idade do indivíduo que se aposenta, maior o impacto; sujeitos com maior escolaridade têm melhor adaptação à mudança de condição social de vida; o maior nível de autoridade no exercício profissional é favorável para se lidar com as dificuldades na transição à aposentadoria e as pessoas mais próximas da aposentadoria apresentam maior resistência em falar sobre as implicações desse evento. / Retirement, which is seldom studied as a senility risk factor, is sometimes overlooked as regards its pathogenic significance, thus generating a pathological aging-related losing process. This study had as purpose to show the relationship between retirement and the senility risk factors in professionals of a large-sized hospital in the city of São Paulo (in transition to retirement), correlate the identified risk factors with the gender, age, education and position authority level variables, in addition to showing any possible interventions to minimize them. This is a study that was described as a cross-applied research having a qualitative and quantitative approach, with a view to describe and review the correlation of the above variables with the retirement social and psychological factors. The study results showed that there is a correlation between the retirement perspectives and the identified risk factors (income reduction and work-related benefits, empty feeling, stress and anxiety), with a possible income reduction being the main cause of uneasiness. Retirement is a life event that may cause emotional instability, with bad consequences for the future; the younger the retiring individual, the greater the impact. People with higher education level show a better adjustment to changes in their social life status. A greater authority level at work is a favorable condition to handle the retirement transition-related difficulties, and those who are close to being retired have greater resistance to address the implications of such event.
2

Mitochondrial dysfunction in ageing and degenerative disease /

Wredenberg, Anna, January 2007 (has links)
Diss. (sammanfattning) Stockholm : Karolinska institutet, 2007. / Härtill 4 uppsatser.
3

Fatores de risco à senilidade na transição à aposentadoria / Seniliy risk factors upon retirement transition

Juan Carlos Lara Canizares 14 December 2009 (has links)
A aposentadoria, raramente estudada como um fator de risco à senilidade, passa muitas vezes despercebida na sua importância patogênica, gerando um processo de perdas que se relaciona com o envelhecimento patológico. Este estudo objetivou apontar a relação entre a aposentadoria e os fatores de risco para a senilidade em profissionais de um hospital de grande porte da cidade de São Paulo (que se encontravam na transição à aposentadoria), correlacionar os fatores de riscos detectados com as variáveis: gênero, idade, escolaridade, nível de autoridade no cargo e apontar a possibilidade de intervenções que possam minimizá-los. Trata-se de um estudo descrito como uma pesquisa transversal, aplicada, de abordagem qualitativa e quantitativa, que visa à descrição e à análise da correlação das variáveis apontadas com fatores psicológicos e sociais da aposentadoria. Os resultados do estudo mostraram que há correlação entre perspectivas da aposentadoria e fatores de risco identificados (diminuição da renda e benefícios associados ao trabalho, sentimento de vazio, estresse e ansiedade), sendo a possibilidade de diminuição da renda a principal causa de preocupação. A aposentadoria é um evento da vida que pode produzir instabilidade emocional com consequências nocivas ao futuro; quanto menor for a idade do indivíduo que se aposenta, maior o impacto; sujeitos com maior escolaridade têm melhor adaptação à mudança de condição social de vida; o maior nível de autoridade no exercício profissional é favorável para se lidar com as dificuldades na transição à aposentadoria e as pessoas mais próximas da aposentadoria apresentam maior resistência em falar sobre as implicações desse evento. / Retirement, which is seldom studied as a senility risk factor, is sometimes overlooked as regards its pathogenic significance, thus generating a pathological aging-related losing process. This study had as purpose to show the relationship between retirement and the senility risk factors in professionals of a large-sized hospital in the city of São Paulo (in transition to retirement), correlate the identified risk factors with the gender, age, education and position authority level variables, in addition to showing any possible interventions to minimize them. This is a study that was described as a cross-applied research having a qualitative and quantitative approach, with a view to describe and review the correlation of the above variables with the retirement social and psychological factors. The study results showed that there is a correlation between the retirement perspectives and the identified risk factors (income reduction and work-related benefits, empty feeling, stress and anxiety), with a possible income reduction being the main cause of uneasiness. Retirement is a life event that may cause emotional instability, with bad consequences for the future; the younger the retiring individual, the greater the impact. People with higher education level show a better adjustment to changes in their social life status. A greater authority level at work is a favorable condition to handle the retirement transition-related difficulties, and those who are close to being retired have greater resistance to address the implications of such event.
4

Mechanisms of Synaptic Development and Premature Aging in Drosophila: A Dissertation

Li, Yihang 20 September 2016 (has links)
Development and aging, two fundamental aspects of life, remain key biological processes that researchers try to understand. Drosophila melanogaster, thanks to its various merits, serves as an excellent model to study both of these processes. This thesis includes two parts. In the first part, I discuss our finding that the presynaptic neuron controls a retrograde signaling pathway by releasing essential components via exosomes. During synaptic development, postsynaptic cells send retrograde signals to adjust the activity and growth of presynaptic cells. It remains unclear what the mechanism is which triggers the release of retrograde signals; and how presynaptic cells are involved in this signaling event. The first part of this thesis demonstrates that a retrograde signal mediated by Synaptotagmin4 (Syt4) depends on the anterograde delivery of Syt4 protein from the presynaptic neuron to the muscle compartment likely through exosomes. This trans-synaptic transfer of Syt4 is required for the retrograde control of activity-dependent synaptic growth at the Drosophila larval neuromuscular junction. In the second part of this thesis, I talk about our discovery that the disruption of nuclear envelope (NE) budding, a novel RNA export pathway, is linked to the loss of mitochondrial integrity and premature aging in Drosophila. We demonstrate that several transcripts, which are essential for mitochondrial integrity and function, use NE-budding for nuclear export. Transgenic Drosophila expressing a LamC mutation modeling progeroid syndrome (PS), a premature aging disorder in humans, displays accelerated aging-related phenotypes including progressive mitochondrial degeneration as well as decreased levels of a specific mitochondrial transcript which is normally enriched at NE-budding site. The PS-modeled LamC mutants exhibit abnormal lamina organization that likely disrupts the egress of these RNAs via NE-budding. These results connect defective RNA export through NE-budding to progressive loss of mitochondrial integrity and premature aging in Drosophila.

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