Recherches sur le développement des organes genitaux de quelques Gasteropodes hermaphrodites. 1. Thèse ; Propositions données par la Faculté. 2e. Thèse

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Investigations on the vertical migration of planktonic Crustacea in the Bodensee-Obersee. [Translation from: Schriften des Vereins fur Geschichte des Bodensees und seiner Umgebung, 87, 177-187, 1969.]

The vertical zoning of the planktonic Crustacea in a lake is the expression of a complex set of different factors. Besides the measurable, external influences such as light, temperature, acid and C02 stratification, a particularly large part is played by internal factors, which co-ordinate a specific reaction in each species depending on state of development, age and sex. Supporting this extensive, predictable, annual course of diurnal depths and the daily vertical migrations, whose extent is again dependent on external conditions, primarily of course on the amount of light. The individual factors mentioned, however, are here also of great significance. Within the scope of a long-term study of the planktonic Copepoda of Lake Constance, some day and night series were in 1963 also carried out in the Obersee, in order to obtain at least volumetric data on the extent of the daily migrations of these creatures.

Modulation of the effectiveness of 17-alpha-hydroxy-20-beta-dihydroprogesterone or of a gonadotrophic extract on the in vitro intrafollicular maturation of oocytes of the rainbow trout Salmo gairdnerii by various non-maturing steroids [Translation from: Compte Rendu Hebdomadaire des Seances de l'Academie des Sciences, Paris, Series D 281, 811-814, 1975]

The effectiveness of 17 α-hydroxy-20 β-dihydroprogesterone (17 α-20 β Pg) or of a trout hypophyseal gonadotrophic extract on the in vitro intrafollicular maturation of trout oocytes can be modulated by steroids which do not have a direct maturing effect; the effectiveness of the gonadotrophic extract is lowered by oestradiol and oestrone and increased by testosterone. As these steroids have no significant effect on maturation induced by 17 α-20 β Pg, the site of their activity is probably in the follicular envelopes. Corticosteroids, and Cortisol and cortisone in particular increase the effectiveness of the gonadotrophic extract, but increase the effectiveness of 17 α-20 β Pg even more strongly, suggesting that this 'progestagen' has a direct effect on oocyte sensitivity.

The role of ciliates in the pelagic life cycle of the Mediterranean [Translation from: Rapports et Proces Verbaux des Reunions-Conseil International pour l'Exploration de la Mer 17, 511-512, 1963]

During hydrographic and plankton studies carried out since 1960 in the coastal zone between the Ebro and Castellon (western Mediterranean), data has been collected which confirms the importance of ciliates in the composition and activity of the plankton. The ciliates in 413 samples of 100 ml of water were counted, having been examined with the Utermohl microscope after sedimentation. The samples studied were distributed according to the density of their population. subject for study. The author concludes that recognition of the role of ciliates as an important link in the food chain of the sea would simplify the interpretation of certain problems posed by the nutrition of certain groups of planktonic animals.

Dependência de álcool e outras drogas: debate conceitual, políticas públicas e a inserção do serviço social nessa área

Este estudo buscou identificar a inserção do Serviço Social na intervenção profissional junto à dependência de álcool e outras drogas na década de 1980, no Rio de Janeiro, a partir do debate conceitual acerca dessa temática e da análise das políticas públicas formuladas pelo Estado brasileiro para o seu enfrentamento. Caracteriza-se como uma pesquisa de natureza exploratória face à parca existência de produções científicas no Serviço Social sobre tal questão. Assim, constituindo-se como uma contribuição em termos de subsídios à ação profissional dos assistentes sociais. Os dados coletados junto aos representantes e assistentes sociais de instituições em funcionamento na década de 1980 permitiram delinear um perfil sobre a implantação do Serviço Social na intervenção profissional junto a essa problemática. Inicialmente, as entidades sem fins lucrativos e os programas de dependência química de empresa foram os principais espaços ocupados pelos profissionais de Serviço Social, havendo uma inexpressiva presença nos órgãos estatais. A partir dos anos noventa, com as políticas públicas de atenção ao consumo de drogas, amplia-se o número de assistentes sociais com atuação nessa área, cabendo, portanto, ao Serviço Social contribuir mais intensamente com estudos científicos, visando melhor instrumentalizá-los de forma teórico-metodológica e técnico-operativa.