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Search Results: 1 - 10 of 111955 matches for " Silva Marcos Antonio Camacho da "
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Estudo de soroconvers?o com formula??es da vacina Biken CAM-70 contra sarampo
Camacho,Luiz Antonio B; Freire,Marcos Silva; Yamamura,Anna MY; Leal,Maria da Luz; Mann,George;
Revista de Saúde Pública , 2000, DOI: 10.1590/S0034-89102000000400008
Abstract: objectives: to compare seroconversion rates induced by biken cam-70 measles vaccines at different viral concentrations. methods: healthy children aged 9 to 18 months from a primary health care unit in rio de janeiro, brazil, and whose guardians agreed with their participation, were randomly assigned to receive one of the following vaccine formulations: 5,000, 1,000 or 200 ccid50 (50% tissue culture infective dose). the research team, participants, and data analysts were blinded to the type of vaccine administered. pre- and post-vaccination antibody levels were assessed through plaque reduction neutralization test. two interim data analyses were planned to assess unequivocal evidence of the superiority of one of the vaccine types. results: from 223 recruited children, 84% completed the whole course. of them, 79% were less than 10 months of age, and 93% did not show detectable measles antibodies in pre-vaccination serum. seroconversion (four-fold increase in antibody levels) in groups vaccinated with 5,000, 1,000 or 200 ccid50, were 82%, 55%, and 37% (p<0.0000), respectively. differences in the mean concentration of post-vaccination antibodies were also substantial and statistically significant (p<0.000). seroconversion rates (pooling data from all vaccine formulations) were 73% to children aged 10 months or more, and 53% in those below 10 months. conclusions: vaccines with concentrations below 5,000 ccid50 did not produce satisfactory seroconversion rates. the vaccine performance by age was consistent with that seen in other studies using biken cam-70 strain in which a sizable proportion of 9-month-old children failed to achieve full immunological response.
Estabelecimento e valida o de normas DRIS para a cultura do algod o no centro-oeste do Brasil = DRIS norms for cotton growth in the center-west region of the Brazil
Marcos Antonio Camacho da Silva,William Natale,Euclides Braga Malheiros,Aurélio Pavinato
Acta Scientiarum : Agronomy , 2009,
Abstract: Visando estabelecer normas para o DRIS na cultura do algod o, um produto agrícola em franca expans o no território nacional e com significativa contribui o econ mica no PIB brasileiro, o presente trabalho estudou lavouras comerciais de municípios do Norte do Estado de Mato Grosso do Sul e Centro-Sul do Estado de Mato Grosso. Os resultados indicaram que a escolha da rela o modifica a interpreta o dos resultados, exceto quando é utilizada a metodologia proposta por Elwali e Gascho, pois, neste caso, os índices nutricionais convergem independentemente do método de escolha dasrela es. O método DRIS otimiza o gerenciamento das informa es nutricionais do algodoeiro, e é possível detectar os nutrientes limitantes nas lavouras desta cultura. With the objective of establishing DRIS norms for cotton culture – an agricultural product in frank expansion in Brazil and with a significant contribution to that country’s GDP – the present work studied commercial crops of cities in Mato Grosso and MatoGrosso do Sul State, Brazil. The results indicated that the choice of ratio (A/B or B/A) modifies the interpretation of the results, except when the methodology by Elwali e Gascho was used, because the nutritional index converge regardless of the ratio method chosen.The DRIS method optimizes the management of cotton nutritional data, identifying the limiting nutrients in this culture.
Estudo de soroconvers o com formula es da vacina Biken CAM-70 contra sarampo
Camacho Luiz Antonio B,Freire Marcos Silva,Yamamura Anna MY,Leal Maria da Luz
Revista de Saúde Pública , 2000,
Abstract: OBJETIVO: Comparar a resposta sorológica induzida por formula es com diferentes concentra es de vírus da vacina contra sarampo da cepa Biken CAM-70. MéTODOS: Crian as sadias de 9 a 18 meses de um centro de saúde do Rio de Janeiro, RJ, cujos responsáveis concordaram em participar, foram randomizadas em três grupos vacinados com concentra es de 5.000, 1.000 ou 200 CCID50 (50% Tissue Culture Infective Dose). Os participantes e o pessoal da pesquisa ignoravam o tipo de vacina administrado. A avalia o sorológica foi realizada pelo teste de redu o em plaque de lise. Duas análises intermediárias dos dados foram programadas. RESULTADOS: Das 223 crian as recrutadas, 84% completaram todos os procedimentos; 79% tinham idade menor que 10 meses; e 93% n o tinham anticorpos contra sarampo no soro pré-vacinal. As propor es de soroconvers o (quadruplica o das concentra es pré-vacinais) foram 82%, 55% e 37% (p<0,0000), nos grupos vacinados com 5.000, 1.000 ou 200 CCID50, respectivamente. As diferen as nas concentra es médias de anticorpos pós-vacinais também foram substanciais e estatisticamente significativas (p<0,000). A soroconvers o (independente da formula o da vacina) foi de 73% nas crian as com 10 ou mais meses de idade e 53% naquelas com menos de 10 meses. CONCLUS ES: Formula es da vacina com concentra es inferiores a 5.000 CCID50 n o induziram soroconvers o satisfatória. O desempenho da vacina por faixas etárias foi compatível com o observado em outros estudos com a vacina Biken CAM-70 e indica que uma propor o apreciável de crian as vacinadas aos 9 meses pode n o obter resposta imunológica plena.
Immunogenicity of WHO-17D and Brazilian 17DD yellow fever vaccines: a randomized trial
Camacho Luiz Antonio Bastos,Freire Marcos da Silva,Leal Maria da Luz Fernandes,Aguiar Savitri Gomes de
Revista de Saúde Pública , 2004,
Abstract: OBJECTIVE: To compare the immunogenicity of three yellow fever vaccines from WHO-17D and Brazilian 17DD substrains (different seed-lots). METHODS: An equivalence trial was carried out involving 1,087 adults in Rio de Janeiro. Vaccines produced by Bio-Manguinhos, Fiocruz (Rio de Janeiro, Brazil) were administered following standardized procedures adapted to allow blocked randomized allocation of participants to coded vaccine types (double-blind). Neutralizing yellow fever antibody titters were compared in pre- and post-immunization serum samples. Equivalence was defined as a difference of no more than five percentage points in seroconversion rates, and ratio between Geometric Mean Titters (GMT) higher than 0.67. RESULTS: Seroconversion rates were 98% or higher among subjects previously seronegative, and 90% or more of the total cohort of vaccinees, including those previously seropositive. Differences in seroconversion ranged from -0.05% to -3.02%. The intensity of the immune response was also very similar across vaccines: 14.5 to 18.6 IU/mL. GMT ratios ranged from 0.78 to 0.93. Taking the placebo group into account, the vaccines explained 93% of seroconversion. Viremia was detected in 2.7% of vaccinated subjects from Day 3 to Day 7. CONCLUSIONS: The equivalent immunogenicity of yellow fever vaccines from the 17D and 17DD substrains was demonstrated for the first time in placebo-controlled double-blind randomized trial. The study completed the clinical validation process of a new vaccine seed-lot, provided evidence for use of alternative attenuated virus substrains in vaccine production for a major manufacturer, and for the utilization of the 17DD vaccine in other countries.
Efeito de deficiência de micronutrientes no estado nutricional da mamoneira cultivar Iris
Lange, Anderson;Martines, Alexandre Martin;Silva, Marcos Antonio Camacho da;Sorreano, Maria Claudia Medes;Cabral, Cleusa Pereira;Malavolta, Eurípedes;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005000100009
Abstract: the objectives of this work were to characterize the visual symptoms of micronutrient deficiencies, and their effects on nutricional status of castor beans. a greenhouse experiment with nutrient solutions was carried out from february to june, 2003. the commercial hybrid "iris" was used. treatments were as follows: complete, minus b, minus cu, minus fe, minus mn, minus mo, and minus zn. symptoms of deficiency were observed in the treatments with omission of b, fe, and mn. the symptoms firstly developed when either fe or mn was deficient, and they were followed by those deficient in boron. dry matter yield was affected in the decreasing order: fe>mn>b. both upper and lower leaves reflect the nutritional status of the castor bean with respect to b, cu, fe, mn, mo and zn. leaf chlorophyll, as measured in units spad, was influenced by the treatments.
Manejo de irriga??o e nitrogênio no feijoeiro comum cultivado em sistema plantio direto
Lopes, Adriano da Silva;Oliveira, Gabriel Queiroz de;Souto Filho, Sebasti?o Nilce;Goes, Renato Jaqueto;Camacho, Marcos Antonio;
Revista Ciência Agron?mica , 2011, DOI: 10.1590/S1806-66902011000100007
Abstract: with technological innovations, such as irrigation, the bean has been grown by producers who have the most varied levels of technology that, in suitable times, allows the planting great success in grain yield. the aim of this study was to evaluate the response of the dry bean to different managements of irrigation and nitrogen fertilization with no-tillage system, in aquidauana - ms, brazil. the experiment was conducted at the universidade estadual de mato grosso do sul, with the soil of the area classified as alfisol, using the bean crop "perola" sown on june 30, 2007. the experimental design was a randomized block split-plot consisting of three blocks and two replications within each block. the plots were composed of three management of irrigation, by the class a pan method, using hargreaves-samani equation, and management by tensiometry (-40 kpa), with water replacement of 16.5 mm for all irrigation plots. the subplots consisted on four rates of nitrogen fertilization (0; 50; 100 and 150 kg ha-1), in which the nitrogen source was urea. it was concluded that the irrigation management through the class a pan and hargreaves-samani equation conduced to higher grain yields of bean, 3031.11 and 3005.02 kg ha-1 respectively.
índice de pegamento de frutos em goiabeiras
Corrêa Márcio Cleber de Medeiros,Prado Renato de Mello,Natale William,Silva Marcos Antonio Camacho da
Revista Brasileira de Fruticultura , 2002,
Abstract: A produ o das plantas está relacionada com o florescimento e frutifica o, podendo variar em fun o de fatores genéticos, ambientais e de manejo dos pomares. Informa es dessa natureza, tal como índice de pegamento de frutos, s o importantes na caracteriza o biológica, estudos comparativos de cultivares e predi o de safra. O objetivo deste estudo foi determinar o índice de pegamento de frutos em goiabeiras adultas das cultivares Pedro Sato, Paluma e Rica, em pomares comerciais de elevada produtividade, localizados no município de Taquaritinga-SP. No auge do florescimento de cada cultivar ('Pedro Sato': final de fevereiro; 'Paluma' e 'Rica': final de outubro), foram marcados ramos em volta das plantas, à altura do ter o médio da copa e contados o número de bot es, flores e frutinhos presentes. A opera o repetiu-se cerca de 30 dias depois. A contagem final de frutos foi feita quando estes apresentavam diametro superscript three 3 cm nas plantas de 'Pedro Sato' e uma semana antes da colheita nas plantas de 'Paluma' e 'Rica'. A partir do número total de bot es florais emitidos (NB) e do número de frutos fixados (NF), calculou-se o índice de pegamento de frutos [IP=(NF/NB)100]. A cultivar Pedro Sato apresentou IP=32,3%. As cultivares Paluma e Rica apresentaram IP de 18,7% e 12,2%, respectivamente.
Resposta de mudas de goiabeira à aplica o de zinco
Natale William,Prado Renato de Mello,Corrêa Márcio Cleber de Medeiros,Silva Marcos Antonio Camacho da
Revista Brasileira de Fruticultura , 2002,
Abstract: O subsolo, normalmente utilizado para produ o de mudas de frutíferas, apresenta baixa concentra o de zinco e, assim, existe grande probabilidade de resposta à aplica o deste micronutriente. Considerando a falta de informa es sobre o assunto, procurou-se avaliar o efeito da aplica o de zinco ao substrato de produ o das mudas de goiabeira e acompanhar os efeitos no desenvolvimento, na produ o de matéria seca e no estado nutricional das plantas. O delineamento experimental foi em blocos ao acaso, com cinco tratamentos e cinco repeti es. As doses de zinco, na forma de sulfato de zinco, foram: 0; 2; 4; 6 e 8 mg dm-3 de Zn. No plantio, as mudas receberam doses de N, P, K e B de 300; 100; 150 e 0,5 mg dm-3, respectivamente. O experimento foi conduzido em viveiro telado, em vasos com 2,8 dm3 de substrato de um Argissolo Vermelho-Amarelo. Após 135 dias do plantio, avaliaram-se: a altura, a área foliar e a matéria seca da parte aérea e das raízes, bem como os teores de macronutrientes e de Zn. As mudas de goiabeira responderam positivamente à aplica o de zinco. O maior desenvolvimento das mudas esteve associado à dose de 2 mg dm-3 de Zn. Doses iguais ou superiores a 4 mg dm-3 causaram redu o significativa no desenvolvimento e no acúmulo de macronutrientes nas mudas de goiabeira.
Aplica??o superficial de calcário em pomar de laranjeira pêra em produ??o
Silva, Marcos Antonio Camacho da;Natale, William;Prado, Renato de Mello;Corrêa, Márcio Cleber Medeiros;Stuchi, Eduardo Sanches;Andrioli, Itamar;
Revista Brasileira de Fruticultura , 2007, DOI: 10.1590/S0100-29452007000300036
Abstract: the state of s?o paulo has the largest citriculture of the world, managements are of extreme importance and seek to increase and improve the production. because of that, an experiment with application of five limestone rates was installed in eecb (bebedouro, sp, brazil), in a hapluxtox (red latossol), in july/99. the effects of the limestone, after its application were evaluated through soil testing, in the layers 0-10, 10-20, 20-40 and 40-60 cm, at the 6, 12, 18, 24, 30 and 36 months. linear models demonstrated that the effects of surface liming in soil could reach up 20-40cm. it is known that soil base saturation is a great property of liming action, although it is necessary to use more soil parameters to evaluate its effects. in soils with base saturation >50% the limestone application can be reduce. the maximum reaction of limestone happened between the 12 and 18 months after its application, but in areas with perennial cultures the relative studies to the effects of the liming should be longer.
Immunogenicity of WHO-17D and Brazilian 17DD yellow fever vaccines: a randomized trial
Camacho,Luiz Antonio Bastos; Freire,Marcos da Silva; Leal,Maria da Luz Fernandes; Aguiar,Savitri Gomes de; Nascimento,Jussara Pereira do; Iguchi,Takumi; Lozana,José de Azevedo; Farias,Roberto Henrique Guedes; ,;
Revista de Saúde Pública , 2004, DOI: 10.1590/S0034-89102004000500009
Abstract: objective: to compare the immunogenicity of three yellow fever vaccines from who-17d and brazilian 17dd substrains (different seed-lots). methods: an equivalence trial was carried out involving 1,087 adults in rio de janeiro. vaccines produced by bio-manguinhos, fiocruz (rio de janeiro, brazil) were administered following standardized procedures adapted to allow blocked randomized allocation of participants to coded vaccine types (double-blind). neutralizing yellow fever antibody titters were compared in pre- and post-immunization serum samples. equivalence was defined as a difference of no more than five percentage points in seroconversion rates, and ratio between geometric mean titters (gmt) higher than 0.67. results: seroconversion rates were 98% or higher among subjects previously seronegative, and 90% or more of the total cohort of vaccinees, including those previously seropositive. differences in seroconversion ranged from -0.05% to -3.02%. the intensity of the immune response was also very similar across vaccines: 14.5 to 18.6 iu/ml. gmt ratios ranged from 0.78 to 0.93. taking the placebo group into account, the vaccines explained 93% of seroconversion. viremia was detected in 2.7% of vaccinated subjects from day 3 to day 7. conclusions: the equivalent immunogenicity of yellow fever vaccines from the 17d and 17dd substrains was demonstrated for the first time in placebo-controlled double-blind randomized trial. the study completed the clinical validation process of a new vaccine seed-lot, provided evidence for use of alternative attenuated virus substrains in vaccine production for a major manufacturer, and for the utilization of the 17dd vaccine in other countries.
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