This work compares the anticorrosive properties of DC electrodeposited CuCoNi, CuCo, and CuNi alloy coatings in a NaCl 0.5 mol L-1 solution. The results showed that j and the bath composition influenced the chemical, morphological, and electrochemical characteristics of the alloy coatings. Among all the studied coatings, the CuCo, CuNi, and CuCoNi ones produced at j = 10 A m-2, j = 60 A m-2, and j = 25 A m-2, respectively, showed the best anticorrosive performances in the saline medium, exhibiting charge transfer resistances (Rtc) higher than 2000 Ω cm2 and an electrical double layer capacitances (Cdl) lower than 8 X10-4 F cm-2. These results agree with the compact morphologies and smaller grain sizes presented by these coatings. Therefore, the anticorrosive properties of the coatings cannot be related only to the less noble metal(s) contents in the alloy but also to their morphologies.

resumo Roger Bastide e Florestan Fernandes atuavam em pesquisas sobre relações raciais financiadas por organizações internacionais quando, na década de 1960, os Estados Unidos criaram ações afirmativas para responder à desigualdade racial. As conclusões dos sociólogos estimularam discussões acerca do mesmo problema no Brasil. Entendeu-se naquela época que também temos um dilema, ou seja, uma democracia fracionada, excludente da população negra. Discuto neste artigo a formação do pensamento sociológico de Bastide e Fernandes à luz de teses norte-americanas de relações raciais, assim como o impacto desse pensamento no debate sobre racismo brasileiro.

abstract Roger Bastide and Florestan Fernandes carried out researches on race relations sponsored by international organizations when, in the 1960s, the United States created affirmative actions to respond to its racial inequality. Conclusions from the sociologists enhanced discussions about the same issue in Brazil. The time has come for the understanding that our democracy excludes the Negro population. It is analyzed in this article the formation of Bastide and Fernandes’ sociological thought under American thesis of race relations, as well as the impact of this thought over the debate on Brazilian racism.

resumen Roger Bastide y Florestan Fernandes actuaban en investigaciones sobre relaciones raciales financiadas por organizaciones internacionales cuando, en los años 1960, los Estados Unidos creó acciones afirmativas para responder a su desigualdad racial. Las conclusiones de los sociólogos estimularon discusiones sobre el mismo problema en Brasil. Se entendió en aquella época que también teníamos un dilema, o sea, una democracia fraccionada, excluyente de la población negra. Discuto en este artículo la formación del pensamiento sociológico de Bastide y Fernandes a la luz de tesis estadounidenses de relaciones raciales, así como el impacto de este pensamiento en el debate sobre racismo brasileño.

OBJECTIVE: With the increasing prevalence of steatosis, the number of steatotic liver grafts from deceased donors is also increasing. Thus, determining the prevalence and the population risk factors of steatosis may assist in risk stratification. The aim of this study was to evaluate the prevalence and predictors of steatosis and steatohepatitis among livers from adults who died due to non-burn trauma. METHODS: Specimens were collected from 224 adults undergoing autopsy at a regional autopsy referral center from September 2011 to April 2013. Histopathological examination was performed on six samples obtained from different lobes of each liver. The outcomes of interest were the presence of steatosis, steatohepatitis, NASH inflammation and NASH fibrosis. The main predictors were body mass index, abdominal circumference, liver weight and volume, presence of cholelithiasis, and siderosis. Our modeling strategy made use of a series of generalized linear models with a binomial family. RESULTS: Our sample had a mean age of 40 years; steatosis was diagnosed in 48.2% of cases, and steatohepatitis was diagnosed in 2.7%. The presence of a high proportion of fatty changes was more prevalent among males and older individuals, with the most affected age group being 41-60 years. When evaluating the crude odds ratio for steatosis, the factors significantly associated with an increased risk of steatosis were greater abdominal circumference, BMI, and liver weight and the presence of siderosis. CONCLUSION: Our study reinforces the role of older age, obesity and hepatomegaly as predictors of fatty liver disease. These variables should be considered in the assessment of fatty changes in the livers of potential liver donors.

RESUMO Objetivos: A avaliação pré-anestésica (APA) e a realização de exames laboratoriais são questionadas para cirurgias oftalmológicas ambulatoriais por acrescentarem custos e retardarem a cirurgia. Estas são de baixo risco, mas os pacientes são idosos e com várias comorbidades. O objetivo deste estudo foi determinar se a APA é realmente necessária nestes pacientes em um hospital público. Métodos: Foi conduzido um estudo retrospectivo em 297 prontuários contendo a APA de pacientes para cirurgias oftalmológicas em um hospital público. Foram avaliados através da história, exame clínico e exames complementares, a proporção de pacientes que apresentaram na APA doenças desconhecidas ou não controladas e alterações dos exames complementares. Resultados: A média de idade dos pacientes foi de 71,5 anos, com 95,28% tendo pelo menos uma doença crônica. A doença mais prevalente foi hipertensão arterial sistêmica (62,96%), que em 7,7% dos pacientes estavam sem controle adequado; 2.3% não tinham diagnóstico de HAS. O diabetes mellitus tipo 2 apareceu em segundo (22,22%), com 5,3% sem controle adequado. Glicemia acima de 100 mg.dl-1 foi encontrada em 25,92%, sem diagnóstico conhecido. Do total, 84,8% tomavam pelo menos um medicamento. Somente 73,4% dos pacientes foram liberados para a cirurgia na primeira consulta. Conclusão: A APA em oftalmologia é capaz de detectar doenças não diagnosticadas, ou condições clínicas instáveis, e exerce um papel não só de otimização do paciente para a cirurgia como de atendimento primário, desempenhando papel importante na saúde global da população e, portanto, considerada necessária nos pacientes idosos do sistema público de saúde.

ABSTRACT Objectives: Pre-anesthetic assessment (PAA) and laboratory tests are questioned for ophthalmic procedures due to their additional costs and surgery delays. These are lower risks, nonetheless, patients are elderly and suffer from multiple comorbidities. The aim of this study was to determinate if it is really necessary in a public hospital. Method: a retrospective study on 297 medical records containing the pre-anesthetic questionary from ophthalmic surgery patients in a public hospital was leaded. By the anamnesis, clinical examination and laboratory tests, the rate of patients who came up with unknown or uncontrolled diseases for the pre-anesthetic evaluation among with unsettled lab tests were analyzed. Results: The patients's mean age was 71.5 years old. 95.28% of them suffer from at least one chronic disease. The most prevailer illness was systemic arterial hypertension (SAH) (62.96%), which in 7.7% of were uncontroled. Also 2.3% had no diagnosis of SAH. The DM2 appeared in second (22.22%), with 5.3% without proper management. Glycaemia above 100 mg.dl1 was found in 25.92%, undiagnosed; 84.8% of the total were taking at least one medication. Only 73.4% of patients were released for surgery in the first moment. Discussion: To sum up, PAA in ophthalmology surgery is able to bring up undiagnosed diseases, or unstable medical conditions, and it plays a role not only in optimize the patient for surgery, but also as primary care. It can be an important deal to improve population's health, therefore, considered necessary in elderly patients in the public health system.