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Search Results: 1 - 10 of 173283 matches for " Mirivaldo Barros e;Barros "
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Automedica??o em idosos na cidade de Salgueiro-PE
, Mirivaldo Barros e;Barros, José Augusto Cabral de;Sá, Michel Pompeu Barros de Oliveira;
Revista Brasileira de Epidemiologia , 2007, DOI: 10.1590/S1415-790X2007000100009
Abstract: objectives: to identify the determinants associated with the practice of self-medication in the 60-year-old or older population in the city of salgueiro/pernambuco/brazil. methods: a cross-sectional study was carried out in the urban zone in the city of salgueiro - pe; questionnaires were handed out between may/01/2004 and june/06/2004 in a sample population of 355 persons aged 60 years or more. data were processed and analyzed using epiinfo 6.04 software after a double entry and validated. results: the sample was comprised of 44.9% (159/355) 60-70-year olds, 69.8% (247/355) of which were female, 53.1% (188/355) illiterate, 40.7% (145/355) without having finished high school, and 77.7% (276/355) retired. in the group that used medicines without medical prescription, the drugs used most often were analgesics (30%) and antipyretics (29%). of the reasons presented to justify the use of self-prescribed medicines, pain was the most frequent one (38.3%), followed by fever (24.4%), diarrhea (8.0%), hypertension (8.0%) and cough (5.2%). there was association between the lack of exercise and self-medication (x2 =14.44 p=0.001). conclusions: there is a high prevalence of self-medication in this group; analgesics and antipyretics are the drugs used most often; pain is the symptom that most leads to self-medication; and sedentary individuals use more self-medication than those who exercise.
Sistemas reprodutivos e poliniza??o em espécies simpátricas de Erythroxylum P. Br. (Erythroxylaceae) do Brasil
Brazilian Journal of Botany , 1998, DOI: 10.1590/S0100-84041998000200008
Abstract: the breeding systems and pollination of erythroxylum campestre st. hil., e. suberosum st. hil. and e. tortuosum mart. were investigated on the fazenda água limpa, unb, brasília, df. these species are sympatric, and are commonly found in open cerrados where they flower synchronously for about four months. they are distylic, that is, they have flowers with long styles (pin) as well as with short ones (thrum), both of which possessing stamens of a corresponding height. flowers of the three species are similar, being small, sweet-scented, creamish, and diurnal, as well as nectar producers (sugar concentration about 20.2%), and lasting for only one day. artificial pollination revealed that e. suberosum and e. tortuosum are self-incompatible and that fruits were obtained only by legitimate cross-pollination. e. campestre is partially self-compatible. in all species the number of fruits resulting by natural pollination was higher than that by the artificial means. except for e. campestre, fluorescence microscopy studies revealed that pollen tubes in pin flowers from self-crosses were arrested in the styles and in the thrum flowers at the stigmas. flowers of the three erythroxylum were indistinctly visited by 14 wasp species, 14 bee species and two diptera species. brachygastra, polistes, polybia and pepsis wasps were considered effective pollinators, based on efficiency in contacting the stigmas, while trigona spinipes and apis mellifera were considered occasional pollinators.
Book Review – Negócios com Jap o, Coréia do Sul e China: Economia, Gest o e Rela es com o Brasil.
Jean Barros e Silva
Revista de Administra??o Contemporanea , 2009,
Sistemas reprodutivos e poliniza o em espécies simpátricas de Erythroxylum P. Br. (Erythroxylaceae) do Brasil
Brazilian Journal of Botany , 1998,
Abstract: Foram investigadas a biologia reprodutiva e a poliniza o de Erythroxylum campestre St. Hil., E. suberosum St. Hil. e E. tortuosum Mart., ocorrentes na Fazenda água Limpa, Brasília, DF. Estas espécies s o simpátricas, comumente encontradas em cerrados abertos e florescem em média quatro meses por ano. As três espécies s o distílicas, isto é, apresentam flores com estiletes longos (longistiladas) e flores com estiletes curtos (brevistiladas), ambas com estames em posicionamentos correspondentes. As flores s o similares, pequenas, suavemente perfumadas, de cor creme claro, diurnas, produtoras de néctar (concentra o média de sacarose de 20,2%) e duram um dia. Os testes de poliniza o artificial revelaram que E. suberosum e E. tortuosum s o auto-incompatíveis e só formaram frutos de poliniza es legítimas. Porém, E. campestre é parcialmente auto-compatível. Em todas as espécies a produ o de frutos resultantes de poliniza o natural, foi maior que aquela de poliniza es artificiais. Com exce o de E. campestre, os estudos de microscopia de fluorescência revelaram que os tubos polínicos resultantes de auto-poliniza o em flores longistiladas foram bloqueados no estilete e em flores brevistiladas no estigma. As três espécies foram indistintamente visitadas por 14 espécies de vespas, 14 de abelhas e duas de dípteros. As vespas dos gêneros Brachygastra, Polistes, Polybia e Pepsis foram consideradas polinizadores efetivos devido à eficiência ao contactarem os estigmas. As abelhas Trigona spinipes e Apis mellifera foram consideradas polinizadores ocasionais.
Hamiltonian analysis of General relativity with the Immirzi parameter
Nuno Barros e Sa
Physics , 2000, DOI: 10.1142/S0218271801000858
Abstract: Starting from a Lagrangian we perform the full constraint analysis of the Hamiltonian for General relativity in the tetrad-connection formulation for an arbitrary value of the Immirzi parameter and solve the second class constraints, presenting the theory with a Hamiltonian composed of first class constraints which are the generators of the gauge symmetries of the action. In the time gauge we then recover Barbero's formulation of gravity.
Geodesics or autoparallels from a variational principle?
Nuno Barros e Sa
Physics , 1997,
Abstract: Recently it has been argued that autoparallels should be the correct description of free particle motion in spaces with torsion, and that such trajectories can be derived from variational principles if these are suitably adapted. The purpose of this letter is to call attention to the problems that such attempts raise, namely the requirement of a more elaborate structure in order to formulate the variational principle and the lack of a Hamiltonian description for the autoparallel motion. Here is also raised the problem of how to generalize this proposed new principle to quantum mechanics and to field theory. Since all applications known of such a principle are equally well described in terms of geodesics in non-holonomic frames we conclude that there is no reason to modify the conventional variational principle that leads to geodesics.
Decomposition of Hilbert space in sets of coherent states
Nuno Barros e Sa
Mathematics , 2000, DOI: 10.1088/0305-4470/34/23/304
Abstract: Within the generalized definition of coherent states as group orbits we study the orbit spaces and the orbit manifolds in the projective spaces constructed from linear representations. Invariant functions are suggested for arbitrary groups. The group SU(2) is studied in particular and the orbit spaces of its j=1/2 and j=1 representations completely determined. The orbits of SU(2) in CP^N can be either 2 or 3 dimensional, the first of them being either isomorphic to S^2 or to RP^2 and the latter being isomorphic to quotient spaces of RP^3. We end with a look from the same perspective to the quantum mechanical space of states in particle mechanics.
Uncertainty for spin systems
Nuno Barros e Sa
Mathematics , 2000,
Abstract: A modified definition of quantum mechanical uncertainty D for spin systems, which is invariant under the action of SU(2), is suggested. Its range is shown to be h^2j
Petit-Suisse Cheese Production with Addition of Probiotic Lactobacillus casei  [PDF]
Ludmilla Santana Soares e Barros, Nelson De Carvalho Delfino
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.518189
Abstract: Growing concern to increase life expectancy has promoted several studies in the field of nutrition, especially those on food and their effects on the human body. Assays have been performed to improve their nutritional quality. In fact, there is considerable interest in encouraging development of new ingredients, with the innovation in food products and the establishment of new market niches for these ingredients. The global market for functional foods is growing and always envisages new products with functional technological and physiological characteristics. The petitsuisse cheese is a product of high nutritional value, rich in calcium, phosphorus and fat-soluble vitamins, with a high percentage of milk proteins, coupled to excellent digestion and assimilation by the human body. Current assay describes the production of a petit-suisse cheese to which was added the probiotic Lactobacillus casei BGP 93, and determines the physical, chemical and microbiological viability of lactobacilli in cheese during storage period. Levels of protein, fat in the dry extract, moisture and pH were analyzed for physical and chemical parameters; likewise, detection of coliforms, Staphylococcus, Salmonella, Listeria monocytogenes, and yeasts and molds was performed for microbiological parameters; monitoring of the viability of Lactobacillus casei BGP 93 during its life time was conducted. The petit-suisse cheese proved to be a good vehicle for the addition of probiotic microorganism. Lactobacillus casei remained viable during shelf life even with decreasing pH, and may be considered a functional product during 30 days of storage.
Flora??o sincr?nica e sistemas reprodutivos em quatro espécies de Kielmeyera Mart. (Guttiferae)
Barros, Mariluza A. Granja e;
Acta Botanica Brasilica , 2002, DOI: 10.1590/S0102-33062002000100013
Abstract: the synchronous flowering and the breeding systems of kielmeyera abdita saddi, k. coriacea mart., k speciosa st. hil. and k. variabilis mart., were investigated at fazenda água limpa of the university of brasília, brasília (df). the four kielmeyera species are sympatric and frequent on the cerrados. the flowering period of all species had about two or three months. k. abdita, k. coriacea and k. variabilis flower synchronously during the dry season from august to december and k. speciosa flower isolated during the wet period from february to may. the flowers have similar floral morphology, with dish-shaped, white-pinkish corolla (k. abidita, k. coriacea, k. speciosa or white (k. variabilis), contrasting with the brush-like androecium of many yellow stamens, with apical glands which produce a sweet odour charateristic of kielmeyera. andromonoecy was observed in all species, except in k. speciosa. the flowers are entomophilous and being visited by 21 bee species. but only female bees of xylocopa hirsutissima maidl and x. frontalis (olivier), were considered effective pollinators, because of their efficience as pollen collecting. the species of kielmeyera are self-incompatible adapted to cross-pollination. pollen tubes were blocked in the ovaries, suggesting late-acting self-incompatibility. the percentage of fruit set from crosses was higher (k.abdita 33%, k. coriacea 48,5%, k.speciosa 41,5% and k.variabilis 36,5%) than from natural pollination (k.abdita 13,3%, k. coriacea 30%, k.speciosa 23% and k.variabilis 30%). this suggests that, even though the great constancy of xylocopa sa visitors of kielmeyera flowers, pollen flow may be ineficient to crosses, and promote geitonogamy or interspecific pollen transfer, which would obstructed the eggs fertilization.
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