930 resultados para 73-519
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This article presents new data on the emergence and growth of the leading Western European poultry industries after 1945. It shows that those countries where poultry output grew most quickly – especially the UK, Italy and Spain – were also the countries where the agricultural sectors adopted US technologies and US agribusiness organizational structures most vigorously. Elsewhere in Western Europe, poultry output grew much less quickly and the adoption of agribusiness structures lagged behind. By contrast, the poultry sector in the USSR was based on the Soviet collectivist system. This was the largest poultry sector in Europe, but also much less efficient. The article suggests therefore that the diffusion of agribusiness and the increase in poultry output were deeply entwined across Europe, with potentially important consequences for the different roles and impacts of agribusiness in Europe.
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O presente estudo trata da reconstrução histórica de uma experiência pedagógica realizada na cidade do Recife, no período ' 72/73. Cuida de alguns aspectos da implantação da lei n9 5.692, relacionados com um complexo escolar do qual participaram três estabelecimentos: um, da rede particular, e dois, da rede oficial de ensino. Para funcionamento deste complexo, foi celebrado um convênio entre a Secretaria de Educação do Estado de Pernambuco e uma Congregação religiosa. O contrato foi celebrado prevendo-se a vigência de três anos com possibilidades de renovação. Entretanto, concluído o segundo ano da experiência, o convênio foi rescindido. A experiência que, segundo a lei preconiza, tentava uma integração física, administrativa e pedagó0ica e que por se tratar de clientelas escolarizáveis de classes sociais diferentes, supôs' também, uma integração social, foi frustrada em seu processo, desde que a pretendida integração social não se verificou. Tentamos então, neste estudo, reconstruir todos os acontecimentos ocorridos no complexo escolar, desde o seu início até o seu término, historiar as fontes legais e religiosas que o inspiraram, os mecanismos de discriminação ocorridos, a crise instalada e a consequente extinção da experiência. Fizemos uso das orientações do Estado em termos de planos, discursos, mensagens, etc. teoricamente conectados com uma ideologia liberal, equalizadora de oportunidades educacionais, e como na prática ela se verifica. Levantamos algumas hipóteses que pudessem explicar o fracasso da experiência. Concluímos que elas não respondiam ao nosso interno. Por fim, tentamos através de uma reflexão, onde, levando-se em consideração interesses conflitantes entre segmentos societários e as discriminações havidas, situar através do modo pelos quais eles se verificaram, se o fato estaria ligado a aspectos conjunturais ou aspectos estruturais da formação social capitalista. No caso específico do complexo escolar, a não integração social foi atribuída como sendo uma decorrência dos resíduos estamentais arcaicos, ainda vigentes na sociedade brasileira. O processo capitalista não teria sido ainda tão acelera do no Brasil, particularmente no Nordeste, a ponto de eliminar traços estamentalistas tão fortes, fronteiras tão distantes, entre as classes sociais, ocasionando uma discriminação tão crua e preconceituosa quanto a ocorrida no complexo escolar. Evocamos' uma construção tipológica escolar, que estabelecesse conexão entre os vários tipos de sociedades capitalistas e tentamos sugerir uma possível explicação com base nessa tipologia. Concluímos que a forma de discriminação ocorrida no com plexo escolar é conjuntural ao desenvolvimento do processo de estruturação do capitalismo, onde a discriminação é necessária e imprescindível à própria existência de uma sociedade de classes.
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The objectives of the present study were to evaluate factors associated with estrous synchronization responses and pregnancy per insemination (P/AI) in Bos indicus beef cows submitted to progesterone-based fixed-time artificial insemination (FTAI) protocols. A total of 2388 cows (1869 Nellore and 519 crossbred Nellore x Angus) from 10 commercial farms were evaluated to determine the relationships among breed, body condition score (BCS) on the first day of the FTAI protocol, the occurrence of estrus between progesterone device removal and FTAI and diameter of largest ovarian follicle (LF) at FTAI on estrous synchronization responses and P/AI. Cows (n=412 primiparous; 1976 multiparous) received an intravaginal device containing progesterone or an ear implant containing norgestomet (a progestin), and an injection of estradiol at the beginning of the estrous synchronization protocol. Body condition was scored using a 1-5 scale on the first day of the FTAI protocol and at 30-60 days postpartum. Females received 300IU of equine chorionic gonadotropin (eCG) and PGF(2 alpha) on the day the progesterone device/implant was removed and were inseminated 48-60h later. At insemination, cows (n=2388) were submitted to an ultrasonographic exam to determine the diameter of the LF. Follicles were classified into four categories based on mean and standard deviation (SD) of the LF (LF1 = two SD below the mean; LF2 = mean minus one SD; LF3 = mean plus one SD; LF4 = two SD above the mean). Ovulation rate was determined in a subset of cows (n=813) by three consecutive ultrasonographic exams: (1) at time of progesterone device/implant removal, (2) at time of FTAI and (3) 48 h after FTAI. Ovulation was defined as the disappearance of a large follicle (>= 8.0 mm) that was previously recorded. Estrus was determined in a subset of the cows (n = 445) by the activation of a detection of estrous patch placed on the tail head on the day of progesterone device/implant removal. Pregnancy was diagnosed 30 days after FTAI. Pregnancy was influenced (P = 0.001) by follicle diameter [LF1 = 27.5% (81/295), LF2 = 46.6% (328/705), LF3 = 57.9% (647/1118), LF4 = 63.3% (171/270)] and the occurrence of estrus [estrus = 67.7% (174/257) and no estrus = 36.2% (68/188)]. Follicle diameter at FTAI influenced ovulation rate [LF1 = 42.5% (34/80), LF2 = 73.9% (161/218), LF3 = 95.8% (407/425), LF4 = 97.8% (88/90)], the occurrence of estrus [LF1 = 54.8% (51/93), LF2 = 33.6% (43/128), LF3 = 68.9% (126/183), LF4 = 90.2% (37/41)] and P/AI among cows that had ovulations [LF1 =32.4% (11/34), LF2 = 50.3% (81/161), LF3 = 60.0% (244/407), LF4 = 68.2% (60/88)]. Improving estrous responses between progesterone device withdrawal and FTAI and increasing the diameter of the LF at FTAI may be important aspects to achieve improved estrous synchronization responses and P/AI following progesterone/progestin and estradiol based FTAI protocols in suckled Bos indicus cows. (C) 2010 Elsevier B.V. All rights reserved.
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Purpose - To study the incidence and the etiology of the cardiac lesions in AIDS patients. Methods - The autopsy protocols and the filled slides of the heart from 73 consecutive AIDS patients were reviewed. There were, at least, 2 slides of each heart stained by haematoxylin-eosin; when indicated, Ziehl-Nielsen, Gram and Gomori Grocott stains were used. Results - No cause of death was assigned to the heart. There was involvement of the heart in 66 (90%) cases. Marked atrophy of cardiac fibers with or without lipomatosis was observed in 38 patients. Interstitial infiltrates of myocardium were present in 38 necropsies and in 13 of these cases a probable pathogen was demonstrated: cryptococcus neoforms in three cases and mycobacteria tuberculosis, atypical mycobacteria, toxoplasma gondii, trypanosoma cruzi and cytomegalovirus in two cases each. Bacterial endocarditis was found in 4 autopsies and Kaposi sarcome in one. The pericardium was involved in 22 cases; in 12 there was only non specific mononuclear infiltration. Conclusion - Autopsy examination of the heart from AIDS patients revealed frequent pathologic involvement.
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA
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Incluye Bibliografía
