835 resultados para Sense organs.


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Twenty-seventh session. Oranjestad, Aruba, 11-16 May 1998

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The noxious effects of low or effective dose exposure to single or mixed pesticides on macrophage activity and the lymphohematopoietic organs were investigated. Male Wistar rats were orally exposed to dichlorvos, dicofol, endosulfan, dieldrin and permethrin, either as single or combined mixtures during a 28-day study containing eight groups: one group received a semipurified diet (non-treated); two groups received a semipurified diet containing low dose mixture (dieldrin 0.025 mg/kg, endosulfan, 0.6 mg/kg, dicofol 0.22 mg/kg, dichlorvos 0.23 mg/kg, permethrin 5 mg/kg) or an effective dose mixture (dichlorvos 2.3 mg/kg, dicofol 2.5 mg/kg, endosulfan 2.9 mg/kg, dieldrin 0.05 mg/kg and permethrin 25.0 mg/kg), respectively; the other five groups received a semipurified diet containing each single pesticide in effective doses. At sacrifice, the thymus, spleen, mesenteric lymph nodes, Payer's patches and bone marrow were removed for histological analysis. Peritoneal macrophages were obtained to determine the phagocytosis and spreading indexes and tumoral necrosis factor alpha (TNF-α), nitric oxide (NO) and H2O2 production. Exposure to pesticide mixtures did not alter the percentage of macrophage phagocytosis and spreading, TNF-α production or the NO and H2O2 release when compared to the non-treated group. Neither was there any apparent evidence that a pesticide mixture at low or effective doses altered the histological structure of the lymphohematopoietic organs. The findings indicate that short-term treatment with pesticide mixtures did not induce an apparent immunotoxic effect in male Wistar rats. © 2013 Copyright Taylor and Francis Group, LLC.

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This paper brings to the attention of member countries of the Caribbean Development and Cooperation Committee (CDCC) resolutions adopted by past sessions of the Committee, since 2000, and the process of their implementation. Resolutions 55 to 66 for the period 2000- 2006 have been extracted from the reports of the eighteenth to twenty first sessions of the CDCC Also included for the information of member countries are selected resolutions recently adopted by the Economic Commission for Latin America and the Caribbean (ECLAC) and other organs of the United Nations. These resolutions greatly influence the preparation of the programme of work and are expected guide the day-to-day functioning of the secretariat. It is a great source of information for delegations, given the perceived special relevance of the resolutions to the membership of the CDCC. The resolutions listed in this document are pertinent to all subprogrammes of ECLAC and indeed the CDCC subprogramme 12 of ECLAC. However, the content of these resolutions either marked no real advance on the outcomes of the corresponding conferences that were held within recent times or were cast in a globally relevant context that did not address specific concerns of Caribbean countries to any significant extent.

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Pós-graduação em Ciências Farmacêuticas - FCFAR

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Analisa a Política de Educação Ambiental no Município de Belém, possibilitando através de nossas experiências na área do Meio Ambiente, materializadas a partir da inserção em projetos de extensão e de pesquisa, potencializados pela Universidade Federal do Pará. À luz destas experiências, analisamos teoricamente a Educação Ambiental, e fundamentamos nossas argumentações, na necessidade desta ser concebida como Política Social. A indagação e discussão sobre esta questão, emergiu como tema central de nosso estudo, que perpassa sobretudo pelo Serviço Social, profissão que nas últimas décadas do século XX, e no novo milênio, vem confirmando suas ações na defesa intransigente da democracia, da justiça, da liberdade e dos direitos humanos. A partir deste pressuposto, apresentamos a Educação Ambiental como uma nova demanda ocupacional para o Assistente Social, nesse sentido analisamos a intervenção deste profissional no Município de Belém-PA, no tocante a Educação Ambiental. Para tanto, potencializamos nossa pesquisa em três órgãos do Governo Municipal: FUNBOSQUE, FUNVERDE e SEHAB. Este trabalho tem por objetivo último, propiciar argumentos teóricos para avançar no debate da categoria, vislumbrando novas competências teórico-práticas e éticopolíticas acerca da Educação Ambiental.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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The objective of present study was to evaluate the relative growth of organs and viscera from water buffaloes. Fifteen Mediterranean intact males, averaging, 356.7 kg initial live weight and twenty four months of age, were used. The animals were ramdomly assigned into three groups (categories). One group was ramdomly assigned to immediate slaughter (AR), the rest two groups were full-fed a ration containing 50% concentrate, dry matter basis until reaching the slaughter weights of 450 and 500kg, respectively. At slaughter the empty body weight was determined and the weights of head, feet, leather, lungs, heart, liver, spleen, rumen-reticulum, omasum, abomasum, small intestine, large intestine were recorded. Regression equations of log weight of organs and viscera as a function of log empty-body-weight (EBW), were fitted. All body components studied, with exception of liver and spleen, developed slower than in relation to EBW.