979 resultados para Substâncias perigosas


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Pós-graduação em Biociências e Biotecnologia Aplicadas à Farmácia - FCFAR

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This work had with objective to characterize and evaluate the performance of the combined system, involving activated charcoal and ionic exchange resins in the removal of substances organic contaminating of the ethyl alcohol from the fermentation of the cassava starch. To testing was used ethyl alcohol PA 96 oGL, conductivity of 0.90 μS/cm at 25 oC, acidity of 60 mg/L and Barbet test of 43 minutes at 15 oC. The contaminated alcohol was composed of ethyl alcohol additive of higher alcohols, organic acids, ester, diol, aldehydes, ketone and ether. Contaminated alcohol was added 2% activated charcoal and after the adsorption isotherm in ionic exchange resins was tested. The adsorption with activated charcoal was performed in a Water Bath at 30 oC for one hour and a half and shaking. Already adsorption ionic exchange columns occurred at room temperature on columns of 93,4 cm in filling height and diameter of 2.29 cm, for flows of 180 mL/min and 90 mL/min. Samples were collected in the tests with charcoal and with each one of the resins and the following analyses were performed: conductivity, acidity and Barbet test. The medium values for conductivity, acidity and Barbet test after the adsorption in charcoal and cation and anion resins were respectively: conductivity was 240; 354 and 465 μS/cm to 25 oC; acidity of 1.081; 1.103 and 1.062 mg/L and the Barbet test was 21; 20 and 9 minutes to 15 oC. It was observed that the addition of 2% of activated charcoal and the permanence in the columns of adsorption was not sufficient to remove the organic substances contaminating of the ethyl alcohol.

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The purpose of this article is to comment on the film adaptation by director Stephen Frears of the 18th-century novel Les liaisons dangereuses (in English, Dangerous Liaisons) by Choderlos de Laclos. It compares the film composition to the basic formal aspects of the novel. If, on one hand, Frears’ 1988 film adaptation breaks away from Laclos’ epistolary novel for being aligned with the standard elements of the classical cinema, on the other, it reveals a surprising affinity to the literary work: the relation with the theatrical language.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Ergogenic substances are all nutritional or pharmacological additional devices which physiologically influence on the individual's performance. Currently, the practice of physical exercises that modern gyms have is growing and embracing a new recreational space for the population. In particular, for the male audience, weight training; and for the female audience, aerobic gymnastics. This study has the objective of explaining the importance of ergogenic resources in the physiological and psychological planes, emphasizing the point that supplementation is really valid and beneficial. To achieve the objective of the study, a literature review will be carried out, searching for scientific articles published in books, magazines and online newspapers that address some issues that cut across the thematic proposed in this work. From the point of view of Sport Psychology, the issues discussed on body image and emotional changes have concerns professionals of this area, but the literature suggests it is unnecessary the use of ergogenic substances to the concreteness of that purpose. Supplements of any kind will not be enough to transform the psychological and physiological aspects, the way the media assume conclusively. Thus, with our documentary research, we started a provocation that feeds new studies in the area. We conclude that supplementation is a resource that should be used in the final occasion, that is, if the bodybuilders (non-athletes) have time to be nourished from the normal diet, the use of supplements like whey and creatine, are not needed. Used appropriately supplements do not result in physiological damage, however, can contribute beneficially to the individual's nutrition, thus the abusing dosages, in addition to financial loss, can cause damage to the body

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Esta pesquisa visou a avaliar a associação entre o consumo de substâncias (álcool, tabaco e drogas ilícitas) e problemas familiares numa amostra de 965 adolescentes em 50 escolas públicas de dois municípios do Estado de São Paulo, Brasil, em 2007. Foi utilizado o Drug Use Screening Inventory (DUSI) para a coleta de dados. O uso de álcool, tabaco e drogas ilícitas foi associado à avaliação negativa da relação familiar, à falta de suporte/monitoramento e ao uso de substâncias por familiares (p < 0,05). Os estudantes que relataram ter feito uso de substâncias apresentaram mais problemas familiares do que aqueles que não consumiram nenhuma substância (p < 0,001). Os adolescentes que usaram álcool e tabaco (p = 0,028) e drogas ilícitas (p < 0,001) relataram ter mais problemas familiares do que aqueles que usaram apenas álcool. Os resultados apontam para a importância de se ficar atento ao consumo de álcool e tabaco entre os adolescentes, já que o relato do consumo das duas substâncias esteve associado a prejuízos familiares significativos, semelhantes ao uso de drogas ilícitas.

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