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Search Results: 1 - 10 of 269384 matches for " Jo?o Almir de;Alvim "
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Tolerancia de sementes de soja à desseca??o
Veiga, Adriano Delly;Rosa, Sttela Dellyzete Veiga Franco da;Silva, Paulo de Albuquerque;Oliveira, Joo Almir de;Alvim, Patrícia de Oliveira;Diniz, Kênia Almeida;
Ciência e Agrotecnologia , 2007, DOI: 10.1590/S1413-70542007000300025
Abstract: the anticipated harvest of seeds after physiological maturity allows the obtaining of the better quality physiological, crop rotation and optimization of the processing structures. seeds do not tolerate dissection over all the stages and acquire tolerance in particular stages during maturation, this acquisition of dissection tolerance may coincide with physiological maturity and in soybean seeds, it take place at r7 stage with moisture close from 45% to 50%. so, the present research was intended to evaluate dissection tolerance of soybean seeds. the seeds were harvested at three phenologic stages, r6, r6/r7 and r7 and were submitted to artificial drying at 35oc to 20% of water content and at 42oc to 13%. a fourth harvest was accomplished with field dried seeds, these being utilized as a control. the quality of seeds was evaluated by tests of germination, electric conductivity and of cold, of dry weight of seedlings and lea protein electrophoresis.the experimental design was completely randomized in factorial scheme with four replicates. the control was compared singly with each treatment. from the results, it follows that both germinability and dissection tolerance of soybean seeds increase with the natural water loss in the field; seeds harvest at r7stage show increased physiologic quality, distinct pattern of lea proteins and greater dissection tolerance than at r6 and r6/r7stages; seeds drying harvested close to maturity induces the synthesis of lea proteins; and seeds harvested at r7 stage present physiological quality and lea protein pattern similar to the ones of filed dried seeds up to 14% of water content.
Armazenamento e qualidade de sementes de tomate enriquecidas com micronutrientes e reguladores de crescimento
Albuquerque, Kênia Almeida Diniz;Oliveira, Joo Almir;Silva, Paulo de Albuquerque;Veiga, André Delly;Carvalho, Bruno Oliveira;Alvim, Patrícia de Oliveira;
Ciência e Agrotecnologia , 2010, DOI: 10.1590/S1413-70542010000100002
Abstract: the objective of this study was to evaluate the effect of the application of micronutrients and growth regulators on the germination, vigor, activity of some enzymes, and on the total protein contents in tomato seeds during the storage. the seeds were treated with the chemicals starter?, cellerate?, and stimulate? at the dosages corresponding to 0%, 50%, 100%, 150%, and 200% of the dose recommended by the manufacturer, utilizing the film-coating technique. the evaluations were performed at 0, 6, and 12 months of storage by the following parameters: percentage of germination, percentage and emergency velocity rate, activity of enzymes endo-a-mannanase and esterase, total protein content, and health. the completely randomized design in a 3 x 5 x 3 factorial structure was utilized, namely, three chemicals, five doses, and three storage periods with four replicates of 50 seeds per treatment. coating with the chemicals based on micronutrients and growth regulators and storage interfere on the activity of enzyme endo-a-mannanase in the tomatoes and seeds; the activity of enzyme esterase increases with the storage of tomato seeds, pointing to an increase in the deterioration process; there is an increase in the total protein content in tomato seeds throughout the storage period; chemicals based on growth regulators promote an increase in emergency velocity rate of the tomato seedlings when applied at pre-sowing at the recommended dose.
A importancia da Química Analítica Qualitativa nos cursos de Química das institui??es de ensino superior brasileiras
Alvim, Terezinha Ribeiro;Andrade, Joo Carlos de;
Química Nova , 2006, DOI: 10.1590/S0100-40422006000100030
Abstract: the results of a survey of institutions offering undergraduate studies, with the objective of evaluating the importance of qualitative analytical chemistry for chemistry courses in brazil, are presented and discussed. judging by the data, the content of the course of qualitative analytical chemistry is considered by the brazilian institutions offering undergraduate studies to be a body of knowledge essential for the formation of the chemist. this aspect is deemed valid for both baccalaureate and teaching license studies.
A importancia da Química Analítica Qualitativa nos cursos de Química das institui es de ensino superior brasileiras
Alvim Terezinha Ribeiro,Andrade Joo Carlos de
Química Nova , 2006,
Abstract: The results of a survey of institutions offering undergraduate studies, with the objective of evaluating the importance of Qualitative Analytical Chemistry for Chemistry courses in Brazil, are presented and discussed. Judging by the data, the content of the course of Qualitative Analytical Chemistry is considered by the Brazilian institutions offering undergraduate studies to be a body of knowledge essential for the formation of the chemist. This aspect is deemed valid for both baccalaureate and teaching license studies.
Aspectos epidemiológicos da peste no Brasil
Barreto, Joo de Barros;Castro, Almir de;
Memórias do Instituto Oswaldo Cruz , 1946, DOI: 10.1590/S0074-02761946000300006
Abstract: the a. a. show that the available data on the incidence of human plague in brazil over a long period are not soundly comparable, since only in the recent years it was possible to secure accurate information on the real incidence of the disease. tabulating in three-year periods the 2610 cases occurred from 1934 to 1945, it may be observed the contrast between the first quarter which includes 47% of the whole incidence, and the remaining periods. a general decrease coincides with the activities of the federal government, that in 1936 started a systematic anti-plague program, intensified some years later, with the development of the s. n. p., legally established in 1941. the disease is now limited to the so-called "brazilian north-east". the state of pernambuco is the major focus where, since 1934 occured 40 to 50% of the total cases. studying the cases recorded during the 1941-1945 period, on which better information is available, the a. a. show that out of the 1610 confirmed cases, more than 50% were persons older than 50, 60% were colored people and 51% were male individuals. excepted 9 cases of pneumonic and 13 cases of septicemic plague, all the patients showed the bubonic form with predominance of inguino-crural localization. the mildness of the disease is clearly demonstrated by its low case fatality rate in the period under consideration: 26%, still reduceable to 12% if exclusion is made of the patients who did not receive any treatment owing to the fact that reporting has been made after death. the case fatality rate shows a rise above the age of 50. it is higher among women and colored people. the admnistration of sulphas in place of antiplague serum reduced the case fatality rate. studying the different methods employed for laboratory diagnosis, which confirmed about 50% of the positive occurrences, the a. a. analyse the efficiency of "digitotomy" (fingerbone marrow's culture) as compared with viscerotomy, as well as the value of bacteriological examination
Diretrizes do combate à peste no Brasil
Barreto, Joo de Barros;Castro, Almir de;
Memórias do Instituto Oswaldo Cruz , 1947, DOI: 10.1590/S0074-02761947000200007
Abstract: depois de relembrarem as condi??es da extensa regi?o, em que é a peste endêmica no brasil, e que dificultam a aplica??o, em sua plenitude, das medidas profiláticas recomendadas para o combate à doen?a, sumariam os a. a. a legisla??o brasileira em vigor e discriminam o que tem realizado com aquele fim o servi?o nacional de peste. aludindo aos benefícios do s?ro, das sulfas e possìvelmente da estreptomicina para os doentes acentuam a precária possibilidade do seu isolamento, o que tem levado o servi?o à maior intensifica??o das práticas de anti-ratiza??o e das que visam a destrui??o de roedores e pulgas. mostram, quanto às primeiras medidas, o que tem sido possível fazer, intensa e progressivamente, n?o só para a prote??o das habita??es rurais, aí incluídas as praticas de desratiza??o, limpeza dos terrenos e cuidados com o lixo, como no tocante à instala??o de silos e giraus à prova de ratos, e a outras providências concernentes à adequada disposi??o de gêneros alimentícios e dos diversos materiais, que podem servir de alimento e ninho aos roedores. detêm-se mais no particular das medidas de desratiza??o, salientando o valor do cianogás, que veio, para aquela finalidade, tomando o passo ao envenenamento com iscas raticidas, tendo o arsênico por base, largamente empregadas pelo servi?o ate 1942. mostram como tem crescido, de ano para ano, o percentual de ratos, destruídos por elas e pelo cianogás, em rela??o ao total de ratos mortos; e apontam a decorrente limita??o do uso de armadilhas. quanto aos lan?a-chamas, também largamente empregados, reputam-nos mais perigosos e menos eficientes e econ?micos que o cianogás, com idênticas indica??es, salientando porém a grande vantagem do uso do ddt, como agente despulizante, inclusive pela sua a??o residual. mostram o valor da utiliza??o, em larga escala, do ddt também para a defesa do homem s?o, que se limitava, até há pouco, pràticamente à soroterapia preventiva e à imuniza??o ativa. parece ter-se mostrado esta eficiente no b
Utiliza??o de gordura protegida durante o ter?o inicial da lacta??o de vacas leiteiras em pastagem de coast-cross
Vilela, Duarte;Alvim, Maurilio José;Matos, Leovegildo Lopes de;Matiolli, Joo Batista;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002001000019
Abstract: the objective of this experiment was to evaluate the effect of a commercial rumen by pass fat source in concentrate offered to dairy holstein cows at the first part of lactation, grazing coast-cross-1 (cynodon dactylon (l.) pers.) pasture. fourteen cows at the beginning of lactation were fed on 9, 6, and 3 kg/cow/day of concentrate (23.5% cp and 80% tdn) during the first (up to 90 days), second (91 to 180 days) and third period (181 to 273 days), respectively. the animals were distributed in a random design with two treatments: control and test group. the test group (seven cows) was fed addionally on 700 g/cow/day of commercial source of rumen protected fat, as an extra energy source for the first 90 days of the experimental period. the pasture was managed under rotational grazing with one day of occupation, respecting a resting period of 25 days (spring/summer) to 32 days (fall/winter), for each paddock. average milk yield, during the three periods, increased (p<0.05) from 18.4, 15.2 and 13.7 kg/cow/day to 21.3, 17.1 and 14.4 kg/cow/day, in response to the extra energy supplied during the first 90 days period. there was no evidence (p>0.05) of interaction between type of supplement and period, indicating the prevalence of a residual effect of fat supplementation. the overall stocking rate of the pasture was 4.6 cows/ha, resulting in 72.4 kg of fat corrected milk/ha/day for the control group and 80.4 kg/ha/day for the group fed on the rumen protected fat.
Utiliza??o de soja integral tostada na dieta de vacas em lacta??o, em pastagem de coastcross (Cynodon dactylon, L. Pers.)
Vilela, Duarte;Matos, Leovegildo Lopes de;Alvim, Maurilio José;Matiolli, Joo Batista;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000500027
Abstract: the purpose of this study was to evaluate the effect of the inclusion of roasted whole soybean (rws) in the concentrate composition to be employed to supplement feeding of holstein cows on coastcross-1 pasture. twelve early-lactating cows were utilized, divided into two groups as follows: a) the ones fed standard concentrate (control) containing soybean meal (23.5% cp and 80% tdn) and b) the ones fed rws-enriched concentrate (19.5% cp and 86% tdn). in two treatments, daily feeding was of 9 kg/cow of concentrate. an electric fence was utilized for helping pasture management, which was based on rotational grazing, with one day of paddock occupation and a resting period of 25 days. the experiment lasted 100 days, during the summer, when the pasture was fertilized with 140, 32, and 112 kg/ha of, respectively, n, p2o5 and k2o, divided into four applications. the inclusion of rws caused an increase in milk production and in fat-corrected (to 3.5%) milk production, which were, in average: 22.2 and 23.6 and 19.8 and 19.7 kg/cow/day, for rws-enriched and control treatments, respectively. the milk fat levels were 4.16 and 3.49% in the plots, where animals were fed, respectively, rws-enriched and standard concentrate. the cows fed rws-enriched concentrate exhibited superior milk production than the ones fed standard concentrate, reaching 145.4 kg milk/ha/day. in both treatments the cows showed weight gains.
Utiliza o de soja integral tostada na dieta de vacas em lacta o, em pastagem de coastcross (Cynodon dactylon, L. Pers.)
Vilela Duarte,Matos Leovegildo Lopes de,Alvim Maurilio José,Matiolli Joo Batista
Revista Brasileira de Zootecnia , 2003,
Abstract: O objetivo deste trabalho foi avaliar o efeito da inclus o da soja integral tostada (SIT) no concentrado suplementar de vacas da ra a Holandesa em pastagem de coastcross. Foram utilizadas 12 vacas no início da lacta o, divididas em dois grupos: A) as que receberam concentrado padr o (testemunha), contendo farelo de soja (23,5% PB e 80% NDT) e B) as que receberam concentrado com SIT (19,5% PB, 86% NDT). Nos dois tratamentos, foram fornecidos, diariamente, 9 kg de concentrado por vaca. Usou-se cerca eletrificada para auxiliar no manejo da pastagem, que se baseou em pastejo rotativo, com um dia de ocupa o dos piquetes, por 25 dias de descanso. O experimento teve dura o de 100 dias, durante o ver o, quando foram aplicados na pastagem 140, 32 e 112 kg/ha de N, P2O5 e K2O, respectivamente, divididos em quatro aplica es. A inclus o de SIT aumentou a produ o de leite, a produ o de leite corrigido para 3,5% de gordura, que foram, em média: 22,2 e 23,6; 19,8 e 19,7 kg/vaca/dia, para os tratamentos SIT e testemunha, respectivamente. Os teores de gordura no leite foram de 4,16 e 3,49% nos tratamentos em que os animais receberam concentrado com SIT e concentrado padr o, respectivamente. As vacas que receberam concentrado com SIT mostraram produ o superior ao grupo testemunha, atingindo 145,4 kg/ha/dia de leite. Nos dois tratamentos, as vacas ganharam peso.
Utiliza o de gordura protegida durante o ter o inicial da lacta o de vacas leiteiras em pastagem de coast-cross
Vilela Duarte,Alvim Maurilio José,Matos Leovegildo Lopes de,Matiolli Joo Batista
Pesquisa Agropecuária Brasileira , 2002,
Abstract: O experimento foi realizado com o objetivo de avaliar o aumento na densidade energética de um concentrado quando se usa uma fonte comercial de gordura protegida, fornecida para vacas da ra a Holandesa em pastagem de coast-cross-1 (Cynodon dactylon (L.) Pers.), durante o ter o inicial da lacta o. Foram utilizadas 14 vacas, todas no início da lacta o e recebendo 9, 6 e 3 kg/vaca/dia de concentrado (23,5% de proteína bruta e 80% de NDT), no ter o inicial (até 90 dias), médio (91 a 180 dias) e final (de 181 a 273 dias), respectivamente. Esses animais foram distribuídos, usando blocos casualizados, em dois tratamentos (sete vacas cada) determinados pelo fornecimento ou n o de 700 g/vaca/dia da gordura protegida. Usou-se cerca eletrificada para auxiliar no manejo da pastagem, que se baseou em pastejo rotativo, com um dia de ocupa o dos piquetes e o período de descanso variando de 25 a 32 dias no ver o e no inverno, respectivamente. As produ es médias de leite nos três períodos avaliados aumentaram (P<0,05) de 18,4, 15,2 e 13,7 kg/vaca/dia para 21,3, 17,1 e 14,4 kg/vaca/dia, com o suprimento de gordura protegida nos primeiros 90 dias do experimento. A taxa de lota o média das pastagens foi de 4,6 vacas/ha, o que possibilitou produ es médias diárias de leite, no decorrer do experimento, de 72,4 kg/ha corrigido para 3,5% de gordura para o tratamento testemunha, e de 80,4 kg/ha com o uso da gordura protegida.
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