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Desempenho agron mico de genótipos de girassol no norte de Minas Gerais = Agronomic performance of sunflower genotypes in the north of Minas Gerais, Brazil.
Danúbia Aparecida Costa Nobre,José Carlos Fialho de Resende,Delacyr da Silva Brand?o Junior,Candido Alves da Costa
Agro@mbiente On-line , 2012,
Abstract: O girassol (Helianthus annuus L.) encontra-se entre as quatro culturas de maior produ o de óleo comestível no mundo, e destaca-se pela sua adapta o a diferentes condi es edafoclimáticas. Objetivou-se com este estudo avaliar o desempenho agron mico de dez genótipos de girassol no norte de Minas Gerais. O estudo foi conduzido nas Fazendas Experimentais da Empresa de Pesquisa Agropecuária de Minas Gerais (Epamig), nos municípios de Jaíba, distrito de Mocambinho e NovaPorteirinha. Fez-se a avalia o do desempenho agron mico destes genótipos analisando as seguintes características: flora o inicial, altura das plantas, diametro da haste, número de folhas,circunferência do capítulo, estande final e rendimento de gr os. Os dados coletados foram submetidos à análise de variancia e ao teste de Scott-Knott a 5% de probabilidade. Houve varia o em todos os parametros avaliados no comportamento agron mico dos genótipos, os quais apresentaram bom desempenho quando cultivados em Mocambinho e Nova Porteirinha, no norte de Minas Gerais. Os genótipos avaliados apresentam ciclo precoce, exceto o SYN 039A, com ciclo médio. Com a redu o do ciclo da cultura, observa-se também redu o na maioria das variáveis avaliadas.The sunflower (Helianthus annuus L.) is one of the four cultures of the largest production of edible oil worldwide, and stands out for its adaptation to different edafoclimatic conditions. The objective of this study was to evaluate the agronomic performance of ten cultivars of sunflower in northern Minas Gerais. The study was conducted at the Experimental Farms of the Agricultural Research Company of Minas (Epamig) in the municipalities of Jaíba, District of Mocambinho and Nova Porteirinha. The agronomic perfomance of these genotypes was evaluated by reviewing these characteristics: initial flowering,plant height, stem diameter, leaf number, circumference of the chapter, final stand, and yield. The data collected were subjectedto variance analysis and the Scott-Knott test at 5% probability. There was variation in all parameters evaluated in agronomic behavior of genotypes, which showed good performance when grown in Mocambinho and Nova Porteirinha, in the north of Minas Gerais. All genotypes evaluated presented early cycle, with the exception of SYN 039A, which demonstrated a medium cycle. With the reduction of the crop cycle, there is also a reduction in the majority of variables.
Disfonia funcional psicogênica por puberfonia do tipo muda vocal incompleta: aspectos fisiológicos e psicológicos
Cielo, Carla Aparecida;Beber, Bárbara Costa;Maggi, Celina Rech;K?rbes, Daiane;Oliveira, Clarissa Flores;Weber, Danúbia Emanuele;Tusi, Aline Ramos;
Estudos de Psicologia (Campinas) , 2009, DOI: 10.1590/S0103-166X2009000200010
Abstract: the purpose of the present article is to discuss the physiological and psychological issues relating to psychogenic functional dysphonia through puberphonia of the mutational voice disorder type, by clarifying the aims of speech therapy and the factors that may intervene in the prognosis. the study was conducted based on a systematic search of national and international scientific literature, both current and classical. based on the aspects covered, it was possible to conclude that therapeutic behavior is founded on techniques that aim to decrease the fundamental voice frequency based on the lowering of the larynx. however, an interdisciplinary approach is required, in view of the fact that the causes of this situation are predominantly emotional.
Chlorophyll Fluorescence as an Indicator of Cellular Damage by Glyphosate Herbicide in Raphanus sativus L. Plants  [PDF]
bia Barbosa Silva, Alan Carlos Costa, Rodolfo Rodrigo Pereira Alves, Clarice Aparecida Megguer
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.516265
Abstract:

The fodder radish is an important alternative late summer crop in central-western Brazil. The fodder radish has a short growing cycle, is highly productive and possesses qualities that enhance its cultivation potential as an alternative in Brazil’s Biodiesel Program. However, drift of herbicides, such as glyphosate, may hinder the development of fodder radishes. Studies of chlorophyll fluorescence can provide measurements that help assess the effect of herbicide, being good indicator of the damage to photosynthetic apparatus promoted by herbicide. This study was carried out to analyze the effects of glyphosate by measuring chlorophyll a fluorescence, cellular membrane stability and chloroplast pigment contents in fodder radish plants. This experiment used a randomized block design in which the treatments consisted of the following 6 different doses: control, 0, 150, 300, 450, 600, 750 and 900 g i.a. ha-1 of the recommended 480 g·L-1 dose of glyphosate acid equivalent. The plants were sprayed 30 days after emergence and were assessed every 48 hours. The characteristics evaluated, including chlorophyll a fluorescence, chloroplast pigments and the rate of electrolyte leakage, indicated that radish plants are sensitive to glyphosate because the treatments resulted in reduced levels of photosynthetic

Yield and production components of barley plant (Hordeum vulgare) in function of nitrogen fertilization
Mikael Neumann,Marcos Rogério de Oliveira,Cecília Aparecida Spada,Danúbia Nogueira Figueira
Pesquisa Aplicada & Agrotecnologia , 2010, DOI: 10.5777/1504
Abstract: The experiment was conducted to evaluate the effect of increasing nitrogen levels on forage yield and components of barley plant (Hordeum vulgare). The treatments were: T1 – 0 kg ha-1 of N; T2 – 80 kg ha-1 of N; T3 – 100 kg ha-1 of N; T4 – 120 kg ha-1 of N; T5 – 150 kg ha-1 of N; T6 – 180 kg ha-1 of N and T7 – 220 kg ha-1 of N. No significant interaction (P>0.05) was observed between fertilization levels and evaluation period for variables for tiller m-2 number and dry matter content of barley plant. The regression equations for tiller m-2 number observed of 23 days (854.0752 + 2.1593N) and 45 (1020.7458 + 1.4729N) days after culture implantation showed linear behavior rising in 2.16 and 1.47, respectively for each kg of nitrogen applied. The regression equations for dry matter production observed of 23 days after culture implantation (720.0365 + 3.4388N) also to adjusted linear behavior rising in 3.44 kg ha for each kg of nitrogen applied. No difference (P>0.05) was observed for dry matter production observed 45 days after culture implantation in function of nitrogen fertilization. The culture implantation cost (R$ ha-1) showed linear behavior (181.9183 + 0.9842N), rising in R$ 0.98 for each kg of nitrogen applied. O objetivo deste trabalho foi avaliar o efeito de níveis de aduba o nitrogenada em cobertura sobre o rendimento e a produ o da planta de cevada (Hordeum vulgare, L.). Foram avaliados os seguintes tratamentos: T1 – 0 kg ha-1 de N; T2 – 80 kg ha-1 de N; T3 – 100 kg ha-1 de N; T4 – 120 kg ha-1 de N; T5 – 150 kg ha-1 de N; T6 – 180 kg ha-1 de N; e T7 – 220 kg ha-1 de N. O delineamento experimental foi o de blocos casualizados, composto por sete tratamentos e três repeti es. N o houve intera o significativa (P > 0,05) entre nível de aduba o nitrogenada e época de avalia o para número de perfilhos m-2 e teores de matéria seca das plantas de cevada. As equa es de regress o para número de perfilhos m-2 observados 23 dias após plantio (854,0752 + 2,1593N) e 45 dias após plantio (1020,7458 + 1,4729N) mostraram resposta linear crescente de 2,16 e 1,47, respectivamente para cada kg de N aplicado em cobertura na cultura da cevada. Os dados de produ o de matéria seca (720,0365 + 3,4388N) ajustaram-se linearmente, indicando que para cada kg de N aplicado em cobertura na cultura da cevada incrementou-se a produ o em 3,44 kg ha-1 de matéria seca, na primeira data de avalia o (23 dias após plantio). Já na produ o de matéria seca acumulada na segunda data de avalia o (45 dias após plantio), n o se observou diferen a significativa na produ o de mat
Rendimentos e componentes de produ o da planta de cevada (Hordeum vulgare) em fun o de níveis de aduba o nitrogenada em cobertura
Mikael Neumann,Marcos Rogério de Oliveira,Cecília Aparecida Spada,Danúbia Nogueira Figueira
Pesquisa Aplicada & Agrotecnologia , 2011, DOI: 10.5777/1156
Abstract: O objetivo foi avaliar o efeito de níveis de aduba o nitrogenada em cobertura sobre os rendimentos e componentes da produ o da planta de cevada (Hordeum vulgare, L.). Foram avaliados os seguintes tratamentos: T1 – 0 kg ha-1 de N; T2 – 80 kg ha-1 de N; T3 – 100 kg ha-1 de N; T4 – 120 kg ha-1 de N; T5 – 150 kg ha-1 de N; T6 – 180 kg ha-1 de N; e T7 – 220 kg ha-1 de N. N o houve intera o significativa (P>0,05) entre nível de aduba o nitrogenada e época de avalia o para número de perfilhos m2-1 e teores de matéria seca das plantas de cevada. As equa es de regress o para número de perfilhos m2-1 observados 23 dias após plantio (854,0752 + 2,1593N) e 45 dias após plantio (1020,7458 + 1,4729N) mostraram resposta linear crescente de 2,16 e 1,47, respectivamente para cada kg de N aplicado em cobertura na cultura da cevada. Os dados de produ o de matéria seca (720,0365 + 3,4388N) ajustaram-se linearmente, indicando que para cada kg de N aplicado em cobertura na cultura da cevada incrementou-se a produ o em 3,44 kg ha-1 de matéria seca, na primeira data de avalia o (23 dias após plantio). Já na produ o de matéria seca acumulada na segunda data de avalia o (45 dias após plantio), n o se observou diferen a significativa na produ o de matéria seca entre os diferentes níveis de aduba o nitrogenada. Para o parametro custo de implanta o de lavoura (R$ ha-1) houve comportamento linear (181,9183 + 0,9842N), mostrando que a cada kg de N aplicado na cultura da cevada, incrementa-se o custo em R$ 0,98.
Chemical Characterization, Antibacterial and Antioxidant Activities of Essential Oils of Mentha viridis L. and Mentha pulegium L. (L)  [PDF]
Lucilene Fernandes Silva, Maria das Gra?as Cardoso, Luís Roberto Batista, Marcos de Souza Gomes, Leonardo Milani Avelar Rodrigues, Danúbia Aparecida de Carvalho Selvati Rezende, Maria Luisa Teixeira, Marcos Schleiden Sousa Carvalho, Juliana de Andrade Santiago, David Lee Nelson
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.65072
Abstract: The essential oils from Mentha viridis L. and Mentha pulegium L. were characterized by gas chromatography coupled to mass spectrometry (GC-MS). These oils were obtained by hydrodistillation and presented linalool (40.70%), carvone (13.52%) and α-terpinene (8.56%) as the principal constituents in the essential oil from Mentha viridis L. Pulegone (50.01%), menthol (31.90%) and menthone (16.56%) were the principal constituents in the essential oil from Mentha pulegium L. These essential oils (in concentrations ranging from 3.91 to 500 μL·mL-1) showed satisfactory activities against Escherichia coli, Listeria monocytogenes, Salmonella choleraesuis and Staphylococcus aureus. The antioxidant activities with 2-deoxyribose and phosphomolybdenum and the reducing power (in concentrations ranging from 0.78 to 1000 μL·mL-1) were determined. The antioxidant activity was observed for the two oils evaluated by the phosphomolybdenum and 2-deoxyribose methods, whereas the essential oil from M. viridis presented low antioxidant activity in the reducing power assay.
Influência de extratos aquosos de sorgo sobre a germina??o e o desenvolvimento de plantulas de soja
Correia,bia Maria;Centurion, Maria Aparecida Pess?a da Cruz;Alves, Pedro Luís da Costa Aguiar;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000300002
Abstract: laboratory and field experiments show the allelopathic potential of sorghum bicolor l., inhibiting germination and development of weeds and even succession crops. allelopathic effects of aqueous extracts from leaves, stems and roots of five sorghum hybrids (sara, dkb860, dkb599, xbg00478 and xbg06020) were evaluated on soybean (mg/br 46 - conquista) germination and seedling development. two bioessays were conducted from march to june 2002. the controls were: distilled water; distilled water with ph adjusted to 4.5; distilled water with ph adjusted to 6.0; and polyethylene glycol solution (peg) equivalent to the osmotic potential of 0.1 mpa. significant effect was found only for radicle length; seedlings treated with sorghum extracts had significantly smaller radicles than the controls. the root extracts from sara, dkb860, xbg00478 and xbg06020 reduced radicle length, differing from dkb599. leaf extracts from xbg00478 resulted in the smallest average, statistically different from sara extracts. sara stem extracts resulted in the smallest radicles, differing only from xbg00478. leaf extracts of dkb860 and xbg00478 were more inhibitory than root and stem extracts, while for dkb599, xbg06020 and sara, leaf and stem extracts were equally inhibitory.
Entomoftoromicose intestinal: relato de caso
Carvalho,bia Aparecida;Macedo, Jefferson Lessa S. de;Costa, Jean Newton L.;Moraes, Mário A. P.;
Revista da Sociedade Brasileira de Medicina Tropical , 1997, DOI: 10.1590/S0037-86821997000100013
Abstract: a case of intestinal entomophthoramycosis caused by entomophthorales in a man with 19 years-old, farmer and without associated disease. the patient was submitted to a intestinal ressection and diagnosis was carried through after analisys of the surgical specimen. after a review of the literature, the clinical evolution, clinico-pathologic features, difficulties in diagnosis and treatment are discussed.
Entomoftoromicose intestinal: relato de caso
Carvalho Fábia Aparecida,Macedo Jefferson Lessa S. de,Costa Jean Newton L.,Moraes Mário A. P.
Revista da Sociedade Brasileira de Medicina Tropical , 1997,
Abstract: Os autores relatam um caso de entomoftoromicose intestinal causada por Entomophthorales, em indivíduo de 19 anos, agricultor e sem doen a associada. O paciente foi submetido a ressec o intestinal e o diagnóstico foi feito após análise da pe a cirúrgica. Após revis o da literatura, s o discutidos a evolu o clínica, as características clinicopatológicas, as dificuldades no diagnóstico e o tratamento dessa entidade rara.
Influência de extratos aquosos de sorgo sobre a germina o e o desenvolvimento de plantulas de soja
Correia Núbia Maria,Centurion Maria Aparecida Pess?a da Cruz,Alves Pedro Luís da Costa Aguiar
Ciência Rural , 2005,
Abstract: Estudos conduzidos em laboratório ou em condi es de campo demonstram o potencial alelopático da espécie Sorghum bicolor L., seja inibindo a germina o e o desenvolvimento de plantas daninhas ou até mesmo de plantas cultivadas em sucess o. Com o objetivo de avaliar os efeitos potencialmente alelopáticos de extratos aquosos das folhas, caules e raízes de cinco híbridos de sorgo (SARA, DKB860, DKB 599, XBG00478 e XBG06020), sobre a germina o e o desenvolvimento de plantulas de soja, cv. MG/BR 46 (Conquista), foram conduzidos dois bioensaios no período de mar o a junho de 2002. Foram estabelecidas como testemunhas: água destilada (com pH 8,0); água destilada com pH ajustado para 4,5; água destilada com pH ajustado para 6,0 e solu o de polietilenoglicol (PEG) equivalente ao potencial osmótico de 0,1 MPa. Dentre as características avaliadas, houve efeito significativo apenas no comprimento de radícula das plantulas de soja, sendo que aquelas tratadas com os extratos de sorgo apresentaram menor radícula, diferindo significativamente das plantulas testemunhas. Observou-se que, com os extratos de raízes dos híbridos SARA, DKB860, XBG00478 e XBG06020 ocorreram os menores comprimentos de radículas de soja, diferindo do DKB 599. O extrato de folhas do XBG00478 resultou em menor média, n o diferindo dos extratos de DKB860, DKB599 e XBG06020. No entanto, para o extrato de caule, o SARA resultou em menor radícula, diferindo apenas do XBG00478. Verificou-se, também, que, para os extratos de DKB860 e XBG00478, os extratos de folhas proporcionaram menor média, diferindo dos extratos de raiz e caule, enquanto para DKB599, XBG06020 e SARA, n o houve diferen a significativa entre os extratos de folha e caule.
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