429 research outputs found

    EXPERIMENTAL INFECTION OF CATTLE WITH EGGS OF Taenia solium

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    O estudo foi realizado em Piraquara, Paraná, Brasil entre 1994 a 1996. Foi avaliada a possibilidade de bovinos terem participação no ciclo de Taenia solium. Uma cadeia de seis proglótes grávidas de T. solium foi obtida de paciente não medicado. Bovinos da raça Holstein foram infectados com 40.000 ovos de T. solium. A taxa de infecção foi de 100%. Um total de 44 cisticercos foi recuperado depois de 160 a 570 dias, 18 (40,9%) vivos e 26 (59,1%) calcificados. Dos 44 cisticercos, 19 (43,2%) foram encontrados na musculatura esquelética: 10,5% na cabeça, 36,8% nos membros torácicos, 10,5% no diafragma, 42,1% nos membros pélvicos; e 25 (56,8%) nos órgãos: 80% no fígado, 8% no coração, 8% na língua e 4% nos rins. Cisticercos vivos foram encontrados com acúleos rudimentares, com número variável de 01 a 42 e com 25,4-35,7 m de comprimento. Os resultados sugerem que bovinos poderiam servir como hospedeiros intermediários da T. solium. É necessário continuar os estudos para verificar a infectividade de cistos que se desenvolvem em hospedeiros não habituais. Abstract A study was performed in Piraquara, Parana, Brazil during 1994-1996 to evaluate the possibility of bovines participation in the epidemic chain of the Taenia solium. Six gravid segments of T. solium were obtained from a non medicated patient. Holstein bovines were infected with 40,000 eggs of T. solium. The infection rate was 100%. A total of 44 cysticerci were recovered: 18 (40.9%) alive and 26 (59.1%) calcified. Of the 44 cysticerci, 19 (43.2%) were found in the skeletal musculature: 10,5% in the head, 36.8% in the anterior members, 10.5% in the diaphragm, 42.1% in posterior members and 25 (56.8%) in the organs: 80% in the liver, 8% in the heart, 8% in the tongue and 4% in the kidneys. Living cysticerci had 1 to 42 short hooks of 25,4 to 35,7 µm. The results suggested that bovines could serve as intermediary host for T. solium

    Dressed States Approach to Quantum Systems

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    Using the non-perturbative method of {\it dressed} states previously introduced in JPhysA, we study effects of the environment on a quantum mechanical system, in the case the environment is modeled by an ensemble of non interacting harmonic oscillators. This method allows to separate the whole system into the {\it dressed} mechanical system and the {\it dressed} environment, in terms of which an exact, non-perturbative approach is possible. When applied to the Brownian motion, we give explicit non-perturbative formulas for the classical path of the particle in the weak and strong coupling regimes. When applied to study atomic behaviours in cavities, the method accounts very precisely for experimentally observed inhibition of atomic decay in small cavities PhysLA, physics0111042

    Validação Da Versão De 36 Itens Do Who Disability Assessment Schedule 2.0 (whodas 2.0) Para A Avaliação De Incapacidade E Funcionalidade Da Mulher Associada à Morbidade Materna

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    Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)To validate the translation and adaptation to Brazilian Portuguese of 36 items from the World Health Organizaton Disability Assessment Schedule 2.0 (WHODAS 2.0), regarding their content and structure (construct), in a female population after pregnancy. Methods This is a validation of an instrument for the evaluation of disability and functioning and an assessment of its psychometric properties, performed in a tertiary maternity and a referral center specialized in high-risk pregnancies in Brazil. A sample of 638 women in different postpartum periods who had either a normal or a complicated pregnancy was included. The structure was evaluated by exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), while the content and relationships among the domains were assessed through Pearson’s correlation coefficient. The sociodemographic characteristics were identified, and the mean scores with their standard deviations for the 36 questions of the WHODAS 2.0 were calculated. The internal consistency was evaluated byCronbach’s α. Results Cronbach’s α was higher than 0.79 for both sets of questons of the questionnaire. The EFA and CFA for the main 32 questions exhibited a total variance of 54.7% (Kaiser-Meyer-Olkin [KMO] measure of sampling adequacy = 0.934; p < 0.001) and 53.47% (KMO = 0.934; p < 0.001) respectively. There was a significant correlation among the 6 domains (r = 0.571–0.876), and a moderate correlation among all domains (r = 0.476–0.694). Conclusion The version of the WHODAS 2.0 instrument adapted to Brazilian Portuguese showed good psychometric properties in this sample, and therefore could be applied to populations of women regarding their reproductive history. © 2017 by Thieme-Revinter Publicações Ltda, Rio de Janeiro, Brazil.3924452471142/2011-5, CNPq, Conselho Nacional de Desenvolvimento Científico e TecnológicoConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq
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