991 resultados para Fournet, André Hubert.


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Les vies et les carrières d’André Chamson et d’André Malraux se ressemblent par de multiples aspects. Contemporains, ils se connaissaient bien, menaient souvent les mêmes combats, souffraient des mêmes préoccupations, Mais c’est surtout par rapport à l’esprit qui les animait, en tant que grandes personnalités marquantes du XXe siècle, que d’intéressants parallèles peuvent être établis entre eux, que nous pouvons avec profit examiner les valeurs universelles et spirituelles qu’ils promouvaient, valeurs emblématiques pour tant de penseurs, d’acteurs, et d’écrivains de ce siècle. Ainsi pourrions-nous par ailleurs interroger et même évaluer la solidité, la résistance et le potentiel de telles valeurs pour le siècle à venir.

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Ninety-one patients were studied serially for chimeric status following allogeneic stem cell transplantation (SCT) for severe aplastic anaemia (SAA) or Fanconi Anaemia (FA). Short tandem repeat polymerase chain reaction (STR-PCR) was used to stratify patients into five groups: (A) complete donor chimeras (n = 39), (B) transient mixed chimeras (n = 15) (C) stable mixed chimeras (n = 18), (D) progressive mixed chimeras (n = 14) (E) recipient chimeras with early graft rejection (n = 5). As serial sampling was not possible in Group E, serial chimerism results for 86 patients were available for analysis. The following factors were analysed for association with chimeric status: age, sex match, donor type, aetiology of aplasia, source of stem cells, number of cells engrafted, conditioning regimen, graft-versus-host disease (GvHD) prophylaxis, occurrence of acute and chronic GvHD and survival. Progressive mixed chimeras (PMCs) were at high risk of late graft rejection (n = 10, P <0.0001). Seven of these patients lost their graft during withdrawal of immunosuppressive therapy. STR-PCR indicated an inverse correlation between detection of recipient cells post-SCT and occurrence of acute GvHD (P = 0.008). PMC was a bad prognostic indicator of survival (P = 0.003). Monitoring of chimeric status during cyclosporin withdrawal may facilitate therapeutic intervention to prevent late graft rejection in patients transplanted for SAA.

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Using genome-wide data from 253,288 individuals, we identified 697 variants at genome-wide significance that together explained one-fifth of the heritability for adult height. By testing different numbers of variants in independent studies, we show that the most strongly associated 1/42,000, 1/43,700 and 1/49,500 SNPs explained 1/421%, 1/424% and 1/429% of phenotypic variance. Furthermore, all common variants together captured 60% of heritability. The 697 variants clustered in 423 loci were enriched for genes, pathways and tissue types known to be involved in growth and together implicated genes and pathways not highlighted in earlier efforts, such as signaling by fibroblast growth factors, WNT/I 2-catenin and chondroitin sulfate-related genes. We identified several genes and pathways not previously connected with human skeletal growth, including mTOR, osteoglycin and binding of hyaluronic acid. Our results indicate a genetic architecture for human height that is characterized by a very large but finite number (thousands) of causal variants.

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Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms.

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Obesity is heritable and predisposes to many diseases. To understand the genetic basis of obesity better, here we conduct a genome-wide association study and Metabochip meta-analysis of body mass index (BMI), a measure commonly used to define obesity and assess adiposity, in up to 339,224 individuals. This analysis identifies 97 BMI-associated loci (P < 5 × 10(-8)), 56 of which are novel. Five loci demonstrate clear evidence of several independent association signals, and many loci have significant effects on other metabolic phenotypes. The 97 loci account for ∼2.7% of BMI variation, and genome-wide estimates suggest that common variation accounts for >20% of BMI variation. Pathway analyses provide strong support for a role of the central nervous system in obesity susceptibility and implicate new genes and pathways, including those related to synaptic function, glutamate signalling, insulin secretion/action, energy metabolism, lipid biology and adipogenesis.

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Esta investigação teve como principal objectivo avaliar da presença dos contextos institucionais não formais e informais no conjunto das aprendizagens reveladas pelos estudantes que ingressaram, na Escola Secundária Padre António Macedo, no ano lectivo 2009-2010, e averiguar qual o contributo das instituições locais no seu percurso de aprendizagem. A abordagem metodológica assentou num dispositivo de matriz quantitativa, com o recurso ao inquérito por questionário a uma amostra de alunos. Observámos um potencial educativo na cidade proporcionado por instituições, onde se destacaram amigos, familiares e clubes desportivos, procurados pelos jovens para satisfazer a sua necessidade de conhecimento e ocupar tempos livres. Sendo as áreas com mais episódios de aprendizagens, extra escolares: saúde, cidadania, desporto e artes, os jovens reconheceramse detentores de conhecimentos propiciados pela comunidade e instituições locais; ABSTRACT: This research had, as main aim, to assess the presence of formal and informal institutional contexts in all the learnings revealed by the students who enrolled Escola Secundária Padre António Macedo in the year 2009-2010, and also to determine what contribution local institutions had in their learning. The methodological approach was based on a quantitative matrix device, by applying a questionnaire survey to a sample of students. We saw an educational potential offered by institutions in the city, where the highlights were friends, family and sports clubs, popular among young people to satisfy their need for knowledge and to occupy their free time. The areas with more episodes of extra school learning were: health, citizenship, sport and arts. Young people recognized themselves in possession of knowledge provided by the community and local institutions.

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Tese de doutoramento, Geologia (Geologia Económica e do Ambiente), Universidade de Lisboa, Faculdade de Ciências, 2014

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A dissertação de mestrado tem como objetivo avaliar as características e potencialidades dos sistemas urbanos policêntricos e o seu funcionamento em rede. A abordagem empírica está centrada no caso de estudo do Centro Urbano Regional definido no Plano Regional de Ordenamento do Território do Alentejo, constituído pelas cidades de Sines, Vila Nova de Santo André e de Santiago do Cacém, analisando o seu grau de operacionalização e avaliando as relações de cooperação e interdependência existentes. Na abordagem são utilizados os conceitos associados ao modelo de desenvolvimento Policêntrico como os mais adequados para superar as limitações existentes ao nível do desenvolvimento económico e social, de forma a criar massa crítica (demográfica, funcional, cultural e económica), capaz de fomentar o desenvolvimento deste território

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Référence bibliographique : Rol, 58754

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