980 resultados para Estudos epidemiológicos


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Pós-graduação em Química - IQ

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Elétrica - FEIS

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Studies related cryptosporidiosis will be essential, due to its relevance in public health and pathogenicity in pets and production animals. Over the past 20 years, there has been a rapid expansion of research involving the Cryptosporidium genus, largely related to molecular studies, providing a description of various species, genotypes and subtypes of the parasite. The molecular characterization of isolates from different sources (human, animal and environmental) has been widely used in order to investigate the potential zoonotic of this protozoa. The documented transmission forms from animals to humans, from person to person, through water intake or water for the leisure that are directly or indirectly contaminated with sporulated oocysts. The high rate of animals naturally infected and the susceptibility by protozoan, justify the importance of attending to the occurrence of this disease. So are demonstrated epidemiological aspects of this zoonotic disease in domestic animals.

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Pós-graduação em Geografia - FCT

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

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This research aims at analyzing the Brazilian scientific contribution on “metric studies” in the mainstream science through journals indexed in the Scopus basis, intending to visualize its insertion and international impact in the area. Mainly, to diachronically study the researches, the most productive authors and the scientific support network generated among them, as well as to identify the journals in which such production has been disseminated. It is based upon the three main target groups of current bibliometrics, as in Glänzel’s perspective (2003), and upon the impact of Brazilian researches in the international community through the citations received. Were found 263 articles and tables concerning the diachronical study and the highlighted researchers and journals were constructed analyzing the insertion in the target groups, the number of articles, number of citations and the average of citations. As results, researchers from the Federal Universities of Rio de Janeiro and São Paulo have stood out. All the researchers permeate the application of metric studies to several scientific areas, with emphasis on the health and biological sciences. The least contemplated researches were the ones whose objective was to develop and to discuss the bibliometrics as methodology, contributing to its on conceptual-theoreticalmethodological development, as well as those focusing on contributing, assessing and guiding scientific policies. We conclude by suggesting scientific and academic policies which motivate the researchers to publish in journals indexed in international bases in order to internationalize Brazilian science.

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Diplomatics rises as a study field in the 17th century with a juridical purpose related to the verification of authenticity of “diplomas”. Along the 18th and 19th centuries, Diplomatics is deeply influenced by the European scientific and historiographical movements and gets the status of a scientific discipline devoted to the study of the authenticity of documents as a basis for historical research. This article characterizes Diplomatics during the mentioned period in order to point out the main historical factors which have contributed to the development of the discipline, especially in terms of the author that have been responsible for the theoretical foundation of Diplomatics.

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This piece of research aims at analyzing the absolute and relative co-citation indicators, especially Salton’s Cosine and comparing the contribution of these indicators to the understanding of a domain, applying them to the universe of "Metric Studies" at the BRAPCI base. It also aims at presenting the co-citation network generated from the absolute frequencies and highlighting the groupings of co-cited authors, depending on the relative values, integrating and explaining the information from the two indexes. The domain analysis, by means of its 11 approaches, including “Bibliometric Studies”, focuses on the science characterization and evaluation, in that it allows us to identify and to analyze the conditions under which the scientific knowledge is constructed and socialized. In these studies, the contribution of citation and co-citation analysis is highlighted. Of the total of 147 articles retrieved at BRAPCI base, the authors cited in at least 11 articles, in a total of 38 researchers, were selected. The 38 x 38 symmetric matrix with the absolute frequencies of co-citation and the matrix with the relative values of Salton’s Cosine were generated. The co-citation network with absolute frequency values were constructed, through Ucinet software. Cluster analysis of data with relative values wer performed, using the SPSS software. Significant differences between the absolute and relative indexes, with some high absolute values of co-citation were observed; when considered in relation to the presence of each author, their significance is decreased. As to the generated network, seven groups were determined, in which only one is established for close themes and comes from co-citations in the original sense of the term. Five groups present closeness in absolute and relative indicators. It can be concluded about the importance of the studies of authors' co-citation analysis, which associate the two indexes, absolute and relative, in order to visualize and understand the underlying structures of a scientific domain.