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Search Results: 1 - 10 of 212382 matches for " Hamilton Antonio de Oliveira; Lopes "
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Encontro de Aedes albopictus no Estado do Pará, Brasil
Segura Maria de Nazaré de Oliveira,Monteiro Hamilton Antonio de Oliveira,Lopes Ernani da Silva,Silva Orlando Vaz da
Revista de Saúde Pública , 2003,
Abstract: Pela primeira vez é registrada a presen a do Aedes (Stg) albopictus no Estado do Pará, Brasil, em área urbana no município de Medicilandia distante cerca de 90 km de Altamira, onde foram capturados por meio de isca humana 42 exemplares de mosquitos adultos. Estes foram inoculados em C6/36 e em camundongos recém-nascidos na tentativa de isolamento viral, n o tendo sido isolado nenhum vírus. A presen a de Aedes albopictus em áreas da Amaz nia onde circulam os vírus de dengue e de febre amarela é preocupante e representa um risco potencial desta espécie de mosquito se tornar infectada com tais vírus.
Encontro de Aedes albopictus no Estado do Pará, Brasil
Segura,Maria de Nazaré de Oliveira; Monteiro,Hamilton Antonio de Oliveira; Lopes,Ernani da Silva; Silva,Orlando Vaz da; Castro,Francisco Corrêa; Vasconcelos,Pedro Fernando da Costa;
Revista de Saúde Pública , 2003, DOI: 10.1590/S0034-89102003000300020
Abstract: it is first reported the detection of aedes (stg) albopictus mosquitoes in state of pará, brazil, in the urban area of medicilandia, a municipality far 90 km from altamira, where 42 adult mosquitoes were baited using human attraction. all mosquitoes were pooled and inoculated into c6/36 and suckling mice in attempts for virus isolation. no virus was isolated. the occurrence of aedes albopictus in urban areas of the amazon region is of concern since dengue and yellow fever viruses are endemic in the amazon and thus there is a potential risk for this mosquito species to become infected with both viruses.
USO DA EQUA??O DE ESTADO DE PENG-ROBINSON COM REGRA DE MISTURA DEPENDENTE DA COMPOSI??O NA PREDI??O DO EQUILíBRIO DE FASES DO SISTEMA TERNáRIO CO2-LIMONENO-CITRAL
OLIVEIRA, Alessandra Lopes de;CABRAL, Fernando Antonio;
Ciência e Tecnologia de Alimentos , 1997, DOI: 10.1590/S0101-20611997000400028
Abstract: phase equilibrium data at high pressures for co2-limonene and co2-citral binary systems and for co2-limonene-citral ternary systems were collected from literature and employed in a thermodynamic modelling that uses the peng-robinson equation of state with: (1) classical mixture rule; (2) stryjek & vera composition dependant mixture rule. the binary interaction parameters for the co2-limonene and co2-citral systems were obtained by fitting the models to the experimental data using two computational programmes that involved the minimisation of an objective function by the simplex method as suggested by nelder & mead, written as a function of the deviation between experimental and calculated data. the phase equilibrium for the ternary systems was calculated using the previously fitted binary interaction parameters fitting, disregarding those parameters relative to limonene and citral. the results showed that, under supercritical conditions, the two models employed in the present work were capable of qualitatively predicting the phase equilibrium for the ternary systems.
USO DA EQUA O DE ESTADO DE PENG-ROBINSON COM REGRA DE MISTURA DEPENDENTE DA COMPOSI O NA PREDI O DO EQUILíBRIO DE FASES DO SISTEMA TERNáRIO CO2-LIMONENO-CITRAL
OLIVEIRA Alessandra Lopes de,CABRAL Fernando Antonio
Ciência e Tecnologia de Alimentos , 1997,
Abstract: Dados de equilíbrio de fases a press es elevadas dos sistemas binários CO2-Limoneno e CO2-Citral e do sistema ternário CO2-Limoneno-Citral foram coletados da literatura e usados na modelagem termodinamica que emprega a equa o de estado de PENG-ROBINSON [1] com: 1) Regra de mistura clássica; 2) Regra de mistura dependente da composi o de STRYJEK & VERA [2]. Os parametros de intera o binária entre CO2-Limoneno e CO2-Citral foram obtidos pelo ajuste dos modelos a dados experimentais, fazendo uso de dois programas computacionais, os quais envolvem a minimiza o de uma fun o objetivo, pelo método Simplex de NELDER & MEAD (3), que foi escrita em termos dos desvios relativos entre os pontos experimentais e os calculados pelos modelos. O equilíbrio de fases do sistema ternário foi calculado utilizando-se os parametros de intera o binária ajustados previamente e considerando parametros nulos entre os componentes Limoneno e Citral. A análise dos resultados indica, para as condi es supercríticas, que os dois modelos foram capazes de predizer qualitativamente o sistema ternário, fornecendo resultados compatíveis, em ordem de grandeza, com os valores experimentais.
Hiv-aids e suporte nutricional
Maria Rita Marques de Oliveira,Koitshi Kondo,Hamilton Antonio Bonilha de Moraes
Invenio , 2005,
Abstract: Durante diez días de internación para un tratamiento clínico y nutricional se evaluaron la evolución del estado nutricional y de la composición corporal de veinte hombres portadores de HIV/AIDS, con edades comprendidas entre los 30±7 a os, y que no hacían uso de inhibidor de proteasis. En este período se les suministró dieta oral, asociada a un suplemento alimenticio específico. Al comenzar, 37,8% de los examinados presentaban al menos tres medidas antropométicas por debajo del percentil 5 o IMC < 16,5 kg/m2. Comparadas con el IMC, la materia grasa (impedancia eléctrica), el pliegue cutáneo del tríceps y la albúmina sérica, la circunferencia del brazo y la circunferencia muscular del brazo fueron los indicadores más sensibles de la desnutrición. Después de diez días de internación, no hubo diferencia estadística en las variables bioquímicas y antropométricas monitorizadas, salvo en el pliege cutáneo del tríceps (comienzo: 8±3mm; final: 9±3 mm, p< 0,05). Hubo también aumento de la materia grasa (comienzo: 21,9±9,3%; final: 23,9±10%, p < 0,05). A pesar del significado clínico relativo de los resultados, parece que la suplementación alimenticia promueve preferentemente el incremento de la materia grasa, comprobado por los resultados del pliegue cutáneo del tríceps y de la impedancia eléctrica
úlcera gastroduodenal em potros
Dearo, Antonio Cezar de Oliveira;Lopes, Marco Aurélio Ferreira;
Ciência Rural , 1995, DOI: 10.1590/S0103-84781995000200027
Abstract: among the great number of pathologies that affect young horses, gastric ulcers are considered one of the most important. murray et al. (1987) working with clinically normal foals established a prevalence of gastric ulcers of 51%. the same author after carrying out 1988). although its aethiology hasn't been well established, a variety of factors are suspected to be involved in its genesis, where stress plays an important role. a disruption of the balance between protective and aggressive factors is suggested and once the last is predominant the ulcer would be established. according to the kind, presence or absence of clinical signs, the locadon of lesions on gastric mucosa and its complications, four clinical syndromes are described in foals: 1) silent ulcers, 2) active ulcers, 3) perforated ulcers and 4) gastric or duodenal obstruction. diagnosis should be based on history, clinical signs, response to treatment and mainly on endoscopic findings. gastric ulcers can be treated with drugs such as acid secretions inhibitors, local antacids, mucosal protectants, prostaglandin analogs and motility stimulants. if necessary, the surgical treatment can be used.
Raz?es de propor??es e uso do método delta para intervalos de confian?a em regress?o logística
Oliveira,Nelson F. de; Santana,Vilma S.; Lopes,Antonio Alberto;
Revista de Saúde Pública , 1997, DOI: 10.1590/S0034-89101997000100012
Abstract: objective: to present an application of logistic regression modelling to estimate ratios of proportions, such as prevalence ratio or relative risk, and the delta method to estimate confidence intervals. method: the delta method was used because it is appropriate for the estimation of variance of non-linear functions of random variables. the method is based on taylor's series expansion and provides a good approximation of variance estimates. a computer program, utilizing the matrix module of sas, was developed to compute the variance estimates. a practical demonstration is presented with data from a cross-sectional study carried out on a sample of 611 women, to test the hypothesis that the lack of housework sharing is associated with high scores of psychological symptoms as measured by a validated questionnaire. results: crude and adjusted prevalence ratio estimated by logistic regression were similar to those estimated by tabular analysis. also, ranges of the confidence intervals of the prevalence ratio according to the delta method were nearly equal to those obtained by the mantel-haenszel approach. conclusions: the results give support to the use of the delta method for the estimation of confidence intervals for ratios of proportions. the method should be seen as an alternative for situations in which the need to control a large number of potential confounders limits the use of stratified analysis.
Raz es de propor es e uso do método delta para intervalos de confian a em regress o logística
Oliveira Nelson F. de,Santana Vilma S.,Lopes Antonio Alberto
Revista de Saúde Pública , 1997,
Abstract: OBJETIVO: Apresentar uma aplica o da regress o logística para estimar raz es de prevalência ou risco relativo, e o uso do método delta para a estimativa de intervalos de confian a. MéTODOS: Utilizou-se o método delta, visto que esta técnica é adequada para estimar variancias de fun es n o lineares de variáveis aleatórias, do tipo raz o de propor es. O método baseia-se na expans o da fun o em série de Taylor, provendo uma aproxima o para o cálculo das variancias. Para estimar as raz es de propor es e as respectivas variancias, que permitem a estima o dos intervalos de confian a, desenvolveu-se programa utilizando-se o módulo matricial do SAS. A aplica o prática do modelo proposto é feita utilizando-se dados de um estudo transversal com uma amostra de 611 mulheres, para testar a hipótese de que a falta de compartilhamento do trabalho doméstico associa-se com altos escores de sintomas psicológicos medidos através de um questionário validado. As raz es de prevalência calculadas através da regress o logística, e os intervalos de confian a estimados pelo método delta foram comparadas com os resultados obtidos pela técnica de Mantel-Haenszel. RESULTADOS: As estimativas pontuais das raz es de prevalência brutas, cruas ou ajustadas, obtidas através da regress o logística, foram semelhantes às encontradas na análise tabular. Também os limites dos intervalos de confian as para as raz es de prevalência através do método delta foram praticamente iguais em rela o aos encontrados através da técnica de Mantel-Haenszel. CONCLUS ES: Os resultados apóiam o uso do método delta para estimar intervalos de confian a para raz es de propor o. Esse método deve ser visto como uma alternativa para situa es em que o efeito em estudo (variável dependente) n o é raro, situa o onde a "odds ratio" se afasta das medidas epidemiológicas caracterizadas como raz o de propor es.
Manejo do solo e aduba??o nitrogenada na supress?o de plantas daninhas na cultura do feij?o de inverno e irrigado
Vincensi, Marion Martins;Araújo, érica de Oliveira;Kikuti, Hamilton;Camacho, Marcos Antonio;
Revista Ciência Agron?mica , 2011, DOI: 10.1590/S1806-66902011000300023
Abstract: the objective of this work was to evaluate the different roof plants and soil nitrogen fertilization in weed suppression on winter irrigated common bean. the experimental scheme used was randomized blocks in subdivided parcels, consisting on four blocks and four replications soil management coverage was used within the plots (millet, crotalaria juncea, without coverage and spontaneous vegetation).subplots used the presence and absence of nitrogen,on coverage,at 20 dae .dry and wet weight of the plants were evaluated before incorporation into the soil. after 35 days of the emergence of the bean plant, were assessed the dry mass, the number of species, the number of total weeds per m2 and the percentage of weed incidence (visual observations). the results have shown that the soil with crotalaria gave greater suppression on weeds, due to the amount of mass in the soil. the fertilization in coverage influenced significantly the production of dry mass of weeds. the accelerated release of nitrogen by crotalaria favors the occurrence and establishment of some species of weeds, giving high competitiveness on the part of the weed and consequently favoring dry mass production.
Plantas medicinais utilizadas na comunidade urbana de Muribeca, Nordeste do Brasil
Oliveira, Gisele Lopes de;Oliveira, Antonio Fernando Morais de;Andrade, Laise de Holanda Cavalcanti;
Acta Botanica Brasilica , 2010, DOI: 10.1590/S0102-33062010000200026
Abstract: modern ways of life in urban communities have altered the use and popular transmission of knowledge about medicinal plants. this study evaluated the changes induced by training in medicinal plants in a group of female residents of the urban community of muribeca (jaboat?o do guararapes, pernambuco), comparing them with other community members who have traditionally acquired knowledge. semi-structured interviews were employed. informant consensus factor (fic) and relative importance (ri) of each species cited by the two groups were calculated. informants trained in use and manipulation cited 70 species, of which petiveria alliacea l. (2.0) and ocimum selloi benth. (1.6) showed higher ri; therapeutic indications with the greatest consensus among informants were: infectious diseases (1.0), diseases of the endocrine glands, nutrition and metabolism (0.9), and of skeletal, muscle, and connective tissue (0.89). untrained informants cited 55 species, with higher values of ri for cymbopogon citratus (dc) stapf (2.0), lippia alba (mill.) n.e. br. (2.0), and mentha x villosa huds. (1.8); parasitic diseases (1.0), disorders of the nervous system (0.79), and gastrointestinal system (0.72) were therapeutic indications with the greatest fic. plants cited are similar, but training influenced species relative importance and therapeutic use indications.
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