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Search Results: 1 - 10 of 181159 matches for " Silvia Denofre de;Espíndola "
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Resistência química de vitro-ceramicos pertencentes a sistemas Li2O-ZrO2-BaO-SiO2 frente ao tratamento com solu??es ácidas e básicas
Campos, Silvia Denofre de;Espíndola, Cláudio;Silveira, Cristian Berto da;Campos, élvio Ant?nio de;
Química Nova , 2002, DOI: 10.1590/S0100-40422002000200003
Abstract: the chemical durability of the li2o-zro2-bao-sio2 system was examined by determination of the vickers hardness. the dependence of hardness and of the chemical resistance with bao addition was investigated. the experimental results indicate that the hardness increases with the bao content. the samples surface's morphology submitted to the chemical treatment in acidic (h2so4) and basic (koh) solution was accompanied by scanning electron microscopy. the chemical durability of the materials with bao showed better than the glass ceramic without this content. these materials treated with h2so4 solution showed a preferential attack to the silica rich sites.
Resistência química de vitro-ceramicos pertencentes a sistemas Li2O-ZrO2-BaO-SiO2 frente ao tratamento com solu es ácidas e básicas
Campos Silvia Denofre de,Espíndola Cláudio,Silveira Cristian Berto da,Campos élvio Ant?nio de
Química Nova , 2002,
Abstract: The chemical durability of the Li2O-ZrO2-BaO-SiO2 system was examined by determination of the Vickers hardness. The dependence of hardness and of the chemical resistance with BaO addition was investigated. The experimental results indicate that the hardness increases with the BaO content. The samples surface's morphology submitted to the chemical treatment in acidic (H2SO4) and basic (KOH) solution was accompanied by scanning electron microscopy. The chemical durability of the materials with BaO showed better than the glass ceramic without this content. These materials treated with H2SO4 solution showed a preferential attack to the silica rich sites.
Evolu??o e viabiliza??o de um centro cirúrgico ambulatorial para cirurgias de catarata em larga escala em um hospital universitário
Kara-Junior, Newton;Espíndola, Rodrigo Fran?a de;
Arquivos Brasileiros de Oftalmologia , 2010, DOI: 10.1590/S0004-27492010000600004
Abstract: purpose: to analyze the number of surgeries performed in outpatient surgical center at a university hospital and to assess its financial viability during and after the interruption of the cataract national campaign in 2006. methods: retrospective analytical study between 2005 and 2009 at the clinical hospital of the university of s?o paulo (hc-fmusp) which evaluated the economic viability of the outpatient surgical center, the number of cataract surgeries performed and the number of surgeons present daily in that unit. results: it would be necessary to perform at least 400 procedures monthly to ensure the financial viability of the outpatient surgical center. this number was lower than the expected in the years of 2008 and 2009 (average of 370.6 and 390.1 surgeries respectively). the number of cataract fellows decreased from 13 in 2005 to 3 in 2009. conclusion: the main factor for the reduction in the number of cataract surgeries performed in the outpatient surgical center after 2006 was the difficulty of access of the population to the hospital due to restrictions on the development of screening projects. the increased use of the operating rooms by other clinics and the decrease in the admission of new surgeons, made the outpatient surgical center appropriate and viable for the new political-economic reality.
Bancos de proteína de leucena e de guandu para suplementa??o de ovinos mantidos em pastagens de capim-buffel
Souza, Ant?nio Alves de;Espíndola, Gast?o Barreto;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000200007
Abstract: the experiment was carried out to evaluate the use of leucaena leucocephala and cajanus cajan as protein sources, during the dry season for lambs grazing on buffel grass pastures. nine experimental treatments resulting from the combination among three types of pasture (buffel grass, buffel grass+cajanus cajan, and buffel grass+leucaena) and three stocking rates (4, 6 and 10 lambs/ ha) were tested. eighteen paddocks (two replicates of pastures per treatment) of 0.5 ha were used. sixty lambs with 19.4 kg live weight at the beginning of the experiment were allocated to pastures with water and mineral supplement offered ad libitum. animal liveweight was recorded at 14 day-intervals after 16 hours of fasting. lambs on the pasture of buffel grass+leucaena showed good performance with no variation in daily liveweight gain rate, when the stocking rate increased from 4 to 6 animals/ha. buffel grass+cajanus cajan pasture did not improve animal performance as compared to buffel grass pasture. it was concluded that leucaena, used as protein supplement, can improve the quality of buffel grass pastures.
Efeito da suplementa??o com feno de Leucena (Leucaena leucocephala (Lam) de Wit) durante a esta??o seca sobre o desenvolvimento ponderal de ovinos
Souza, Ant?nio Alves de;Espíndola, Gast?o Barreto;
Revista Brasileira de Zootecnia , 1999, DOI: 10.1590/S1516-35981999000600034
Abstract: o objetivo deste experimento foi estudar o desempenho de borregos suplementados com dois níveis de feno de leucena (leucaena leucocephala (lam) de wit), durante a esta??o seca, em compara??o com animais mantidos em pastagem exclusiva de capim-buffel (cenchrus ciliaris, l) ou em pastagem consorciada de capim-buffel com guandu (cajanus cajan). durante a esta??o das águas, foi determinado ainda o desempenho dos animais que foram mantidos em pastagem comum de capim-buffel, sem suplementa??o. os seguintes tratamentos foram testados durante a esta??o seca: a - pasto de capim-buffel; b - pasto de capim-buffel consorciado com guandu; c - pasto de capim-buffel suplementado com feno de leucena (250 g/animal?d); e d - pasto de capim-buffel suplementado com feno de leucena (500 g/animal?d). durante a esta??o seca, somente os borregos suplementados com o nível mais alto de feno de leucena (tratamento d) apresentaram ganho diário de peso mais elevado que os animais mantidos em dieta exclusiva de pasto (tratamentos a e b). na esta??o das águas, os animais que apresentaram melhor desempenho durante a esta??o seca passaram a apresentar ganho diário de peso inferior em rela??o aos dos demais tratamentos. quando as duas esta??es foram consideradas em conjunto, a vantagem com a suplementa??o desapareceu e n?o houve diferen?as entre tratamentos. o uso de feno de leucena para suplementa??o de borregos mantidos a pasto, durante a esta??o seca, é eficiente, desde que os animais estejam terminados e sejam abatidos ao final da esta??o.
Bancos de proteína de leucena e de guandu para suplementa o de ovinos mantidos em pastagens de capim-buffel
Souza Ant?nio Alves de,Espíndola Gast?o Barreto
Revista Brasileira de Zootecnia , 2000,
Abstract: O experimento foi realizado com o objetivo de estudar, em ovinos mantidos em pastagens de capim-buffel, a utiliza o de leucena ou guandu, como bancos de proteína, durante esta o seca. Foram testados nove tratamentos experimentais, constituídos pela combina o de três tipos de pastagens (capim-buffel, capim-buffel+guandu e capim-buffel+leucena), com três taxas de lota o (4, 6 e 10 borregos/ha). As pastagens, em duas repeti es, foram estabelecidas em dezoito piquetes de 0,5 ha. Foram utilizados 60 borregos, com peso médio inicial de 19,4 kg, que receberam água e suplementa o mineral completa à vontade e foram pesados a intervalos de 14 dias após 16 horas de jejum. Na pastagem de capim-buffel+leucena, foi possível elevar a lota o de quatro para seis borregos/ha, sem redu o do ganho individual de peso dos animais, com conseqüente aumento da produ o por unidade de área. Na pastagem de capim-buffel+guandu, n o houve melhoria de desempenho dos animais em compara o à pastagem de capim-buffel. Concluiu-se que bancos de proteína de leucena podem melhorar a qualidade de pastagens de capim-buffel.
Influence of the zirconium and titanium oxides on bioactivity of materials constituted by Na2O-CaO-P2O5-SiO2 Estudo da bioatividade de materiais constituídos por Na2O-CaO-P2O5-SiO2: Influência da adi o dos óxidos de zirc nio e de titanio
Silvia Denofre de Campos,Elvio Ant?nio de Campos,Wagner Alex Jann Favre,Leandro de Bispo Carneiro
Orbital : the Electronic Journal of Chemistry , 2012,
Abstract: In this work were synthesized by conventional fusion, biomaterials based on Na2O-CaO-P2O5-SiO2 with titanium oxide and zirconium oxide at different concentrations. The bioglasses, when submitted to the heat treatment in the crystallization temperatures, obtained by Differential Thermal Analysis (DTA) showed an internal reorganization indicated by the presence of different crystalline phases observed in X-ray diffraction patterns of the samples. These crystalline phases, rich in calcium phosphates and calcium silicates, are probably the actives sites useful to the ion exchange process between solid and solution to apatite and hydroxyapatite formation, being responsible by bioactive behavior. Biocompatibility tests for the synthesized materials were made by placing the samples in contact with a solution simulating the blood plasma (SBP). There was a variation of the initial pH of this solution to the more basic pH (from 8.5 to 12.0), indicating the interaction between the solid and the SBP solution. This effect was more pronounced to materials with TiO2 that can be understood as a greater bioactivity and compatibility on these materials. Para este trabalho foram sintetizados, pelo método de fus o convencional, biomateriais baseados em Na2O-CaO-P2O5-SiO2 com óxido de titanio e óxido de zirc nio em diferentes concentra es. Os biovidros quando submetidos ao tratamento térmico nas respectivas temperaturas de cristaliza o, obtidas por Análise Térmica Diferencial (DTA), mostraram uma reorganiza o interna evidenciada pela presen a de fases cristalinas distintas, observadas nos difratogramas de raio-X das amostras. Estas fases cristalinas, ricas em fosfatos de cálcio e silicatos de cálcio, servem de sítios ativos para o processo de troca i nica entre o sólido e a solu o, propiciando a forma o de apatita e de hidroxiapatita, responsáveis pelo comportamento bioativo. Testes de biocompatibilidade dos materiais sintetizados foram feitos colocando-se as amostras em contato com uma solu o que simula o plasma sanguíneo (SPS). Observou-se um deslocamento do pH inicial desta solu o para pHs mais básicos (de 8,5 a 12,0) o que indica intera o entre o sólido e a solu o SPS. Este efeito foi mais intenso para materiais com TiO2 atribuindo-se a eles, maior bioatividade e compatibilidade.
Interven??o fisioterapêutica em adultos roncadores
Aguiar, Francine de;Rech, Rosita Espíndola Santos;Kock, Kelser de Souza;
Fisioterapia em Movimento , 2010, DOI: 10.1590/S0103-51502010000100002
Abstract: introduction: the snoring is characterized as the sound vibration of the soft tissues of the pharynx, due to difficulty is that the air as it passes through the upper airway with partial obstruction. objective: to examine the effectiveness of physiotherapeutic intervention in adult apnea, attended clinic school at the universidade do sul de santa catarina (unisul). method: it is an explanatory research, quantitative and almost experimental. in the first phase the sample was composed of 7 persons residing in the city of tubar?o and the second phase 3 participants were part of physiotherapeutic intervention. the data were treated with descriptive statistics (mean and standard deviation), inferential (wilcoxon test with p < 0.05) and pearson correlation. results: in the first phase, linking the scale of epworth with the variables analyzed, women had greater propensity to sleep, individuals over 50 years and with bmi > 25 had higher excessive daytime sleepiness and quality of life was lower in individuals with higher score on the scale. the results before and after physiotherapeutic intervention, described in the second phase, 2 subjects decreased the score on the scale of epworth and 1 increased, there was an increase in scores of sf36-related quality of life, 2 individuals increased bmi and 1 reduced and all participants decreased the circumference of the neck and head of protrusion. conclusion: the physiotherapy can provide good results in the treatment of snoring, contributing to the reduction of excessive daytime sleepiness and better life quality.
Insecticidal activity of cerrado plant extracts on Rhodnius milesi Carcavallo, Rocha, Galv?o & Jurberg (Hemiptera: Reduviidae), under laboratory conditions
Coelho, André A.M.;Paula, José E. de;Espíndola, Laila S.;
Neotropical Entomology , 2006, DOI: 10.1590/S1519-566X2006000100018
Abstract: chagas' disease is chiefly transmitted by feces of haematophagous bugs (triatominae) that ingested trypanosoma cruzi from blood of infected people or animals. pyrethroids have been the main insecticides used against these insects. however, some populations of insects have shown significant levels of resistance to several pyrethroids, indicating the need of new insecticides for the control of triatomines. insecticidal activity of 24 cerrado plant extracts belonging to five species of four families were assayed on fourth instar nymphs of rhodnius milesi carcavallo, rocha, galv?o & jurberg (hemiptera: reduviidae), under laboratory conditions. for the extract application on triatomines, 50 μg of the extract were topically applied in duplicate on dorsal tergites of ten insects. insects topically treated with acetone, ethanol, as well as insects with no treatment were used as controls. triatomines were observed over a 28-day period. hexanic and ethanolic extracts of simarouba versicolor, guarea kunthiana, guarea guidonia and talauma ovata caused mortality between 20% and 95% of r. milesi in comparison with the controls, which showed no insect mortality. these preliminary data suggest that the ethanolic extract of the root bark of s. versicolor and the hexanic extract of the root of g. guidonia, responsible for a 95% and 75% insect mortality, respectively, should be chemically investigated and monitored through biological assays in order to determine their insecticidal components, that could be used as a molecular model or as biorational compounds for use in insect control programmes.
Condicionantes socioeconómicos para la aprobación de la primera asignatura de la carrera de Medicina*
Said Rücker,Patricia Beatriz Teresita; Chiapello,Jorge Alberto; Espíndola de Markowsky,María Etel;
Educaci?3n M??dica Superior , 2009,
Abstract: objective: to determine if socioeconomic factors influenced on approval of the first subject in medicine career. methods: in a cross-sectional and descriptive study it was determined the geographical move from its home, the unsatisfied basic needs (ubn), and the working activity of 497 new students registered by a voluntary survey and the students approved the subject were registered too. results: geographic move and the ubns were associated with the subject approval (p< 0.05 and p < 0.03) and none of worker student approved the subject. the ubns created the conditions to student to work. unfavorable socioeconomic factors affected the student academic development, preventing the continuation of their higher education studies. thus, implementation of assistance systems to students with unfavorable conditions could have positive effects on its university performance.
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