Four new metal complexes with the amino acid deoxyalliin

The solid complexes [Co(C6H10NO2S) 2], [Ni(C6H10NO2S)2], [Cu(C6H10NO2S)2] and [Fe(C 6H10NO2S)2] were obtained from the reaction of cobalt(II), nickel(II), copper(II) and iron(II) salts with the potassium salt of the amino acid deoxyalliin (S-allyl-L-cysteine). Electronic absorption spectra of the complexes are typical of octahedral structures. Infrared spectroscopy confirms the ligand coordination to the metal ions through (COO-) and (NH2) groups. EPR spectrum of the Cu(II) complex indicates a slight distortion of its octahedral symmetry. Mössbauer parameters permitted to identify the presence of iron(II) and iron(III) species in the same sample, both of octahedral geometry. Thermal decomposition of the complexes lead to the formation of CoO, NiO, CuO and Fe2O3 as final products. The compounds show poor solubility in water and in the common organic solvents. ©2005 Sociedade Brasileira de Química.

Recycling of silicon carbide and corn starch as binder originating from commercial starch consolidation

The main goal of this work is to demonstrate that the use of recycled material originated from SiC ceramics is viable. These ceramics were produced by commercial starch consolidation process. Before calcination stage, surplus of these materials always appears. This surplus is rich in SiC and starch. Samples were made by material previously milled in automatic mortar and sieved (100 Tyler). Later, 10% of distilled water was added to the material and the mixture was pressed at 40 MPa. In order to characterize the ceramic, three point flexural test were made, according to the ASTM C1161/94 norm. The results were analyzed by Weibull statistical method. Apparent density and porosity measures also were made, according to ASTM C20/87 norm. A verification of the surface was made in the fracture area by the depth from focus method and SEM image analysis. The results showed that the recycling process is fully viable, being a good economic option and reduce possible pollutant effect to the environment.

Evaluation of electrical conductivity, pH and refractive index as physico-chemical parameters for quality control of Aveloz homeopathic solutions

Euphorbia tirucalli Lineu (Aveloz) belongs to the family Euphorbiaceae and is used in the treatment of cancer and warts. Some studies have reported that phorbol esters are the active principles responsible for the antitumor activity of Aveloz. The production of these molecules occurs in greater quantity in May, during the morning. This study aimed to evaluate whether the physico-chemical parameters of Aveloz homeopathic aqueous solutions such as pH, electrical conductivity and refractive index change due to storage time. Such parameters were measured regularly for 180 days. All solutions were prepared according to the method of grinding with lactose and subsequent dissolution in aqueous medium, as described in the Brazilian Homeopathic Pharmacopoeia, using as starting point the Aveloz latex collected in May. Homeopathic aqueous solutions containing only lactose were also prepared and evaluated as a control group. The potencies that were analyzed for electrical conductivity, pH and refractive index were: 4cH, 7cH, 9cH, 12cH, 14cH, 15cH, 29cH, 30cH. As a result, we found out that there was only statistical difference (p=0.035) in electrical conductivity between the homeopathic solutions containing Aveloz and the homeopathic solutions without Aveloz, when 15cH potency was compared. We also observed that the electrical conductivity increased with the aging of the solutions but is not directly related to the pH or the refractive index of the solutions, indicating that the aging process may alter the electrical conductivity of the homeopathic medicines. The presence of gas inside the glass that stores these solutions may affect the electrical conductivity measurements. Finally, no statistically significant difference was observed (p> 0.05) in the pH and refractive index.

Fundamentos éticos e formação moral na pedagogia histórico-crítica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Preenchimento de vales incisos por associações de fácies estuarinas, formação Rio Bonito, nordeste do Paraná

Pós-graduação em Geociências e Meio Ambiente - IGCE

Criminalidade e relações de poder em Mato Grosso (1870-1910)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A representação gráfica das unidades de paisagem no zoneamento ambiental: um estudo de caso no município de Ourinhos SP

Pós-graduação em Geografia - IGCE

Entre o "Zaca” e o "Madre”: ofensas raciais, processos identitários e discursos de mestiçagem em duas escolas de Belém

Esta dissertação consiste em uma etnografia do cotidiano escolar, orientada conceitualmente a partir dos marcadores de diferenciação cor/raça, gênero e classe social. A motivação da pesquisa que iniciou a produção deste trabalho partiu da seguinte indagação: processos ofensivos verbais são processos identitários que se constroem a partir de referencias pedagógicos e de discursos docentes em cada escola? Com base em uma trajetória de pesquisa iniciada em 2006, realizada inicialmente na Escola Alexandre Zacharias de Assumpção e posteriormente estendida ao Colégio Madre Zarife Sales, no bairro do Guamá, periferia de Belém do Pará, tento discutir o alcance destas instituições no cotidiano educacional vivido fora delas por seus discentes, ao identificar práticas dinâmicas de viver os espaços urbanos da cidade a partir do ir e voltar da escola. As duas escolas são definidas como escolas de referência no bairro, pois simbolizam, para as clientelas de estudantes por elas atendidas, a possibilidade de sucesso profissional pós-escola entre muitas famílias no bairro. Por outro lado, tento mostrar as contradições internas nas duas escolas para sugerir a ocorrência de acessos diferenciados aos serviços educacionais e ao próprio capital cultural docente conforme o turno em que se estuda. Discuto destacadamente a ocorrência de trocas de ofensas verbais raciais e não-raciais entre os estudantes conforme os marcadores de diferenciação assinalados, para tentar responder a problematização da pesquisa. Depois tento identificar as várias modalidades simbólicas do discurso de mestiçagem como um discurso abrangente que é por mim concebido como a face inversa das ofensas verbais raciais e do não-reconhecimento do racismo nelas existentes pelo corpo institucional, isto é, por docentes, funcionários e gestores.

Síntese, caracterização e estudos de precursores e de óxidos de molibdênio e de tungstênio

Pós-graduação em Química - IQ

O efeito do treinamento na capacidade aeróbia do atleta e sobre as características somatotipológicas para a melhoria do desempenho no futsal

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Early onset of obesity induces reproductive deficits in female rats

The incidence of obesity is increasing rapidly all over the world and results in numerous health detriments, including disruptions in reproduction. However, the mechanisms by which excess body fat interferes with reproductive functions are still not fully understood. After weaning, female rats were treated with a cafeteria diet or a chow diet (control group). Biometric and metabolic parameters were evaluated in adulthood. Reproductive parameters, including estradiol, progesterone, LH and prolactin during the proestrus afternoon, sexual behavior, ovulation rates and histological analysis of ovaries were also evaluated. Cafeteria diet was able to induce obesity in female rats by increasing body and fat pad weight, which resulted in increased levels of triglycerides, total cholesterol, LDL and induced insulin resistance. The cafeteria diet also negatively affected female reproduction by reducing the number of oocytes and preantral follicles, as well as the thickness of the follicular layer. Obese females did not show preovulatory progesterone and LH surges, though plasma estradiol and prolactin showed preovulatory surges similar to control rats. Nevertheless, sexual receptiveness was not altered by cafeteria diet. Taken together, our results suggest that the cafeteria diet administered from weaning age was able to induce obesity and reduce the reproductive capability in adult female rats, indicating that this obesity model can be used to better understand the mechanisms underlying reproductive dysfunction in obese subjects. (C) 2012 Elsevier Inc. All rights reserved.

Nursing care practices at an outpatient care center from an integrative perspective

Aim: to analyze nursing care practices at a Specialized Outpatient Care Center from the perspective of an integrative health care activity. Method: Interviews with 24 nursing professionals were undertaken. For data analysis, Thematic Content Analysis as proposed by Bardin was applied, resulting in the following themes: the team size and its commitment to health care; professional practices and activity of the nursing team. Results: The size of the nursing team was considered insufficient, which compromises the quality of care and results in work overload and dissatisfaction of the nursing professionals. On the other hand, they were satisfied with the tasks performed day-to-day and related integrality to individual care, considered it essential and usually practiced it daily. Conclusion: It is considered that the nursing team has the potential and commitment to develop their care practice combined with the integrative perspective, and therefore providing quality health care to the population.