209 resultados para Birnbaum, NathanBirnbaum, NathanNathanBirnbaum


Relevância:

10.00% 10.00%

Publicador:

Resumo:

O objetivo desta investigação foi verificar se, diante da autonomia e vocação que possuem, bem como da possibilidade de receber amparo e incentivos governamentais, as universidades pertencentes à região do Grande ABC atenderam as recomendações feitas pelo PNPG vigente. Para tanto, foram analisadas cinquenta e sete dissertações e duas teses da área de ciências sociais aplicadas, publicadas no período entre 2011 e 2014, pelas seguintes instituições: Universidade Metodista de São Paulo (UMESP); Universidade Municipal de São Caetano do Sul (USCS); Universidade Federal do ABC (UFABC) e Faculdade de Engenharia Industrial (FEI). Essa averiguação se deu ao redor de dois eixos organizadores do PNPG 2011-2014: o terceiro eixo – o aperfeiçoamento da avaliação e sua expansão para outros segmentos do sistema de CT&I (formação de pós-graduados voltados para atividades extra-acadêmicas/setor empresarial) e o quarto eixo – a multi e a interdisciplinaridade entre as principais características da pós-graduação e importantes temas da pesquisa (promover, por meio de programas, áreas de concentração e linhas de pesquisa, a convergência de temas e compartilhamento de problemas em oposição à sua mera associação ou sobreposição). Este estudo – qualitativo, bibliográfico, documental, exploratório, descritivo, tipo estado do conhecimento – se desenvolveu por meio de pesquisa documental e de análise de conteúdo temático categorial. A coleta de dados foi feita por meio dos repositórios digitais de teses e dissertações mantidos na internet pelas Universidades, cuja produção científica foi investigada. Após a análise dos dados ficou demonstrado que aproximadamente 68,96% da produção científica da área de ciências sociais aplicadas, publicada pelas universidades do Grande ABC, no período entre 2011 e 2014, corresponde às expectativas do PNPG atual no que diz respeito às recomendações constantes no terceiro eixo. Em relação às recomendações feitas no texto do quarto eixo, vemos que aproximadamente 31,03% dos trabalhos selecionados atendem às expectativas do Plano, apresentando em sua estrutura, segundo a fundamentação teórica utilizada neste trabalho, características de interdisciplinaridade.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Transcription of the genes for the human histone proteins H4, H3, H2A, H2B, and H1 is activated at the G1/S phase transition of the cell cycle. We have previously shown that the promoter complex HiNF-D, which interacts with cell cycle control elements in multiple histone genes, contains the key cell cycle factors cyclin A, CDC2, and a retinoblastoma (pRB) protein-related protein. However, an intrinsic DNA-binding subunit for HiNF-D was not identified. Many genes that are up-regulated at the G1/S phase boundary are controlled by E2F, a transcription factor that associates with cyclin-, cyclin-dependent kinase-, and pRB-related proteins. Using gel-shift immunoassays, DNase I protection, and oligonucleotide competition analyses, we show that the homeodomain protein CDP/cut, not E2F, is the DNA-binding subunit of the HiNF-D complex. The HiNF-D (CDP/cut) complex with the H4 promoter is immunoreactive with antibodies against CDP/cut and pRB but not p107, whereas the CDP/cut complex with a nonhistone promoter (gp91-phox) reacts only with CDP and p107 antibodies. Thus, CDP/cut complexes at different gene promoters can associate with distinct pRB-related proteins. Transient coexpression assays show that CDP/cut modulates H4 promoter activity via the HiNF-D-binding site. Hence, DNA replication-dependent histone H4 genes are regulated by an E2F-independent mechanism involving a complex of CDP/cut with cyclin A/CDC2/ RB-related proteins.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Elevation in the rate of glucose transport in polyoma virus-infected mouse fibroblasts was dependent upon phosphatidylinositol 3-kinase (PI 3-kinase; EC 2.7.1.137) binding to complexes of middle tumor antigen (middle T) and pp60c-src. Wild-type polyoma virus infection led to a 3-fold increase in the rate of 2-deoxyglucose (2DG) uptake, whereas a weakly transforming polyoma virus mutant that encodes a middle T capable of activating pp60c-src but unable to promote binding of PI 3-kinase induced little or no change in the rate of 2DG transport. Another transformation-defective mutant encoding a middle T that retains functional binding of both pp60c-src and PI 3-kinase but is incapable of binding Shc (a protein involved in activation of Ras) induced 2DG transport to wild-type levels. Wortmannin (< or = 100 nM), a known inhibitor of PI 3-kinase, blocked elevation of glucose transport in wild-type virus-infected cells. In contrast to serum stimulation, which led to increased levels of glucose transporter 1 (GLUT1) RNA and protein, wild-type virus infection induced no significant change in levels of either GLUT1 RNA or protein. Nevertheless, virus-infected cells did show increases in GLUT1 protein in plasma membranes. These results point to a posttranslational mechanism in the elevation of glucose transport by polyoma virus middle T involving activation of PI 3-kinase and translocation of GLUT1.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Synaptotagmins, which have been found exclusively in neuroendocrine or exocrine tissues, have been implicated in the regulation of secretory vesicle fusion with the plasma membrane. The present paper describes a synaptotagmin isoform (synaptotagmin-5) which exhibits 49% amino acid identity to synaptotagmin-1 and -2. Synaptotagmin-5 mRNA is expressed in rat kidney, adipose tissue, lung, and heart, as well as at higher levels in brain and PC12 cells. Antiserum specific for the synaptotagmin-5 isoform recognizes a protein of about 50 kDa which is about 6-fold more abundant in brain synaptic vesicles than in whole brain membranes.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Issued also as dissertation, Würzburg.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Vols. 11-14 have imprint: Halle, C.A. Schwetschke und sohn.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Includes bibliographical references and index.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Thesis (doctoral)--

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mixed-content miscellanies (very frequent in the Byzantine and mediaeval Slavic written heritage) are usually defined as collections of works with non-occupational, non-liturgical application, and texts in them are selected and arranged according to no identifiable principle. It is a “readable” type of miscellanies which were compiled mainly on the basis of the cognitive interests of compilers and readers. Just like the occupational ones, they also appeared to satisfy public needs but were intended for individual usage. My textological comparison had shown that mixed- content miscellanies often showed evidence of a stable content – some of them include the same constituent works in the same order, regardless that the manuscripts had no obvious genetic relationship. These correspondences were sufficiently numerous and distinctive that they could not be merely fortuitous, and the only sensible interpretation was that even when the operative organizational principle was not based on independently identifiable criteria, such as the church calendar, liturgical function, or thematic considerations, mixed-content miscellanies (or, at least, portions of their contents) nonetheless fell into types. In this respect, the apparent free selection and arrangement of texts in mixed-content miscellanies turns out to be illusory. The problem was – as the corpus of manuscripts that I and my colleagues needed to examine grew – our ability to keep track of the structure of each one, and to identify structural correspondences among manuscripts within the corpus, diminished. So, at the end of 1993 I addressed a letter to Prof. David Birnbaum (University of Pittsburgh, PA) with a request to help me to solve the problem. He and my colleague Andrey Boyadzhiev (Sofia University) pointed out to me that computers are well suited to recording, processing, and analyzing large amounts of data, and to identifying patterns within the data, and their proposal was that we try to develop a computer system for description of manuscripts, for their analysis and of course, for searching the data. Our collaboration in this project is now ten years old, and our talk today presents an overview of that collaboration.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Les ruptures amoureuses et les divorces sont très fréquents dans la société actuelle. La rupture d’une relation amoureuse est une épreuve difficile (Holmes & Rahe, 1967; Scully, Tosi, & Banning, 2000) qui génère une détresse émotionnelle importante (Birnbaum, Orr, Mikulincer, & Florian, 1997; Sbarra, 2006). Certains individus qui vivent une rupture iront même jusqu’à poser un geste suicidaire. En effet, le lien entre la rupture amoureuse et le comportement suicidaire est bien documenté à ce jour (Ide, Wyder, Kolves, & De Leo, 2010). La présente étude a investigué le rôle des insécurités d’attachement amoureux (anxiété d’abandon, évitement de l’intimité) dans la survenue des symptômes dépressifs et des comportements suicidaires (pensées et tentatives) à la suite d’une rupture. Pour ce faire, 50 participants adultes ayant vécu une rupture amoureuse dans les six derniers mois ont été recrutés auprès d’organismes d’aide (centre de prévention de suicide, centre psychologique, organisme communautaire), ainsi qu’à l’aide de publicités affichées en milieu universitaire, sur les réseaux sociaux et sur des réseaux de partenaires. Un intervenant formé en crise suicidaire a administré verbalement des questionnaires validés d’attachement amoureux, de symptômes dépressifs et de comportements suicidaires lors d’une entrevue individuelle. Les résultats des analyses de régressions multiples ont montré que l’anxiété d’abandon des adultes qui vivent une rupture est liée à davantage de symptômes dépressifs, ainsi qu’à la sévérité et l’intensité des idées suicidaires. Ces effets demeurent lorsque l’utilisation du réseau social est contrôlée. L’évitement de l’intimité n’est pas lié à ces variables. La discussion porte sur l’importance de l’anxiété d’abandon comme facteur de vulnérabilité dans les difficultés d’adaptation à la rupture, au-delà du réseau social, et propose des pistes d’évaluation et d’intervention pour les cliniciens.