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Search Results: 1 - 10 of 227321 matches for " José Anchieta de;Ribeiro "
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Intensidades de defoliación para la calidad de los racimos de la videra “Superior Seedless” en en el “Submédio” S o Francisco
Essione Ribeiro Souza,Valtamir Gon?alves Ribeiro,José Anchieta de Assun??o Pionório
Pesquisa Aplicada & Agrotecnologia , 2012, DOI: 10.5777/paet.v5.n1.05
Abstract: A videira cv."Superior Seedless" tem boa aceita o no mercado externo e apresenta excelentes características comerciais, no entanto, sua produtividade é baixa e irregular. Objetivando avaliar a influência da desfolha manual na qualidade de cachos, plantas da cv. "Superior Seedless" foram submetidas a desfolhas manuais, deixando-se 5, 10, 15 e 20 folhas por ramo de produ o. O estudo considerou as seguintes variáveis: produ o por planta (kg), massa da matéria fresca (g), diametro (mm), comprimento (mm) e volume (ml) médio de bagas; sólidos solúveis (Brixo), acidez titulável (g.ácido tartárico/100 ml de polpa) e a relac o sólido solúveis (SS)/acidez titulavel (AT). Para as avalia es físico-químicas foram coletados três cachos por planta, dos quais foram retiradas todas as bagas, coletando-se em seguida uma amostra aleatória de 100 bagas. Verificou-se que apenas as variáveis comprimento e volume de bagas, apresentaram diferen as estatísticas (2,692 ± 0,117 cm, 6,485± 0,113 ml, respectivamente), sendo que, os tratamentos com 5, 10, 15 folhas apresentaram os melhores resultados e que a quantidade de folhas n o interferiu na produ o da "Superior Seedless", na Regi o do Submédio do Vale do S o Francisco. La videra “cv. Superior Seedless” es bien aceptada en el mercado exterior y tiene excelentes características comerciales, sin embargo, su productividad es baja e irregular. Con el fin de evaluar la influencia de la defoliación manual sobre la calidad de los racimos, plantas del cv. “Superior Seedless” fueran sometidas a la defoliación manual, dejando 5, 10, 15 y 20 hojas por rama de producción. El estudio consideró las siguientes variables: producción por planta (kg), masa de materia fresca (g), diámetro (mm), longitud (mm) y volumen (ml) medio de las bayas; sólidos solubles (Brix°), acidez titulable (g. ácido tartárico/100 ml de pulpa) y la relación sólidos solubles (SS) / acidez titulable (AT). Para las evaluaciones físico-químicas se recogieron tres racimos por planta, de los cuales se retiraron todas las bayas, y en continuación, fue recogida una muestra aleatoria de 100 bayas. Se verificó que solamente las variables longitud y volumen de bayas presentaron diferencias estadísticas (2,692 ± 0,117 cm, 6,485 ± 0,113 ml, respectivamente), siendo que, los tratamientos con 5, 10, 15 hojas presentaron los mejores resultados y que la cantidad de las hojas no afectó la producción de “Superior Seedless” en la región del “Submédio” del valle del S o Francisco.
Avalia o da Capacidade de Enraizamento, em água, de Brota es, Ponteiros e Estacas Herbáceas de Clones de Mandioca de Mesa. = Evaluation of the rooting capacity, inside water, of shoots, pointers and steam cuttings of table cassava clones.
Alessandra Ribeiro Rodrigues,José Maria Arcanjo Alves,Sandra Cátia Pereira Uch?a,José de Anchieta Alves de Albuquerque
Agro@mbiente On-line , 2008,
Abstract: Este trabalho teve o objetivo de avaliar a capacidade de enraizamento, em água, de brota es, ponteiros e estacas herbáceas de clones de mandioca de mesa por meio da técnica de propaga o rápida. Foram realizados quatro experimentos na área experimental do CCA-UFRR, em Boa Vista, Roraima, em delineamento inteiramente casualizado. Avaliou-se a percentagem de enraizamento das partes da planta (brota es, ponteiros e estacas herbáceas) quando imersas em água de po o artesiano, filtrada e água proveniente da chuva. De acordo com os resultados obtidos pode-se concluir que o clone de mandioca de mesa P o apresenta uma alta capacidade de enraizamento quando se utiliza o método de propaga o rápida por meio de microestacas; a capacidade de enraizamento, em água, de brota es, ponteiros e estacas herbáceas de plantas de mandioca depende do fator genético e da origem da água utilizada; e a água proveniente da chuva pode ser uma excelente op o para ser utilizada para promover o enraizamento das estruturas vegetativas da mandioca no processo de propaga o rápida. = This work heads to evaluate the rooting capacity, in water, of shoots, pointers and steam cuttings of cassava clones of table by the fast propagation technique. Four experiments were carried out in the CCA-UFRR experimental area, in Boa Vista, Roraima state, in a completely randomized design. The rooting percentage was evaluated in plant cuttings (shoots, pointers and cutting steams) when inside well`s water, filtrated water and rain water. The following conclusions are based on the obtained results: the table cassava clones “P o” shows high capacity of rooting by the fast propagation technique by micro steams cuttings; the capacity of rooting, in water, of shoots, pointers and steams cutting of cassava depends on genetic factor and the kind of water used; the rain water may be an excellent option of rooting of vegetative structures of cassava in fast process of propagation.
Farelo de trigo na alimenta??o de poedeiras semipesadas na fase de recria
Araujo, Daniel de Magalh?es;Silva, José Humberto Vilar da;Araujo, José Anchieta de;Teixeira, Elisanie Neiva Magalh?es;Jord?o Filho, José;Ribeiro, Marcelo Luís Gomes;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008000100009
Abstract: this study aimed to evaluate the effect of the inclusion of the wheat bran (wb) in the ration on egg brown chicken (lohmann brown) performance in the growing phase 1 (7 to 19 week of age) and growing phase 2 (15 to 19 week of age) and its residual effects on initial egg production. one hundred-sixty chickens were allotted to a completely randomized design with four level of wb in the ration: 0 (control), 10, 20 and 30%, that resulted in four treatments, with five replicates of eight birds in the growing phase 1. at the 14th week, the birds were transferred to galvanized wire cages and reallocated in six replicates of six birds each. a total of 144 birds were used and, randomly, four birds per treatment were discarding per treatment, constituting the growing phase 2. the addition of the wb linearly decreased the final body weight and the weight gain, resulting in decreasing of 1.15 g and 0.0 3g, respectively for each 1% of wb inclusion in the ration. water intake show a quadratic effect and increased in absolute values with the addition of wb from 0 to 30%. the birds age at the first egg production and egg weight increased 0.6 day and 0.22 g, respectively for each 1% of wb in the ration. the inclusion of wb reduces chickens growth rate, delays posture starting and improves egg initial weight when compared to corn and soybean meal based diets.
Níveis de sódio na ra??o de frangas de 7 a 12 semanas de idade
Ribeiro, Marcelo Luís Gomes;Silva, José Humberto Vilar da;Araújo, José Anchieta de;Rodrigues, Paulo Borges;Costa, Fernando Guilherme Perazzo;Jord?o Filho, José;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000400041
Abstract: the experiments were carried out to determine sodium requirements for light (ls) and egg-brown (ebs) pullets from 7 to 12 weeks of age. it was used a completely randomized design according to a 6x2 factorial (sodium levels: 0.04; 0.10; 0.16; 0.21; 0.27 and 0.32% x 2 strains), with five replicates of six pullets per experimental unit. feed intake, water intake, daily weight gain, feed: gain ratio, rectal temperature, and comb size were evaluated, as well as feces dry matter and humidity. in the two experiments, there was no interaction (p>0.05) between sodium levels (sl) and strains on the studied variables. feed intake was not affected by ls, but it was greater in ebs than in ls birds (p <0.05). ls had significant effects on daily weight gain and feed: gain ratio according to the quadratic model, and comb size was greater in ls compared to ebs birds. the increase in dietary sodium levels increased water intake and feces humidity, whereas feces dry matter decreased. rectal temperature was not affected by the treatments. for sl and ebs, it is recommended 0.22% na or a daily intake of 123 and 140 mg of sodium, respectively, from 7 to 12 weeks of age.
Efeito da substitui??o dos antimicrobianos pelo ovo desidratado na fase pré-inicial de frangas de dois grupos genéticos alojadas em camas nova e reciclada
Silva, José Humberto Vilar da;Jord?o Filho, José;Silva, Edson Lindolfo da;Ribeiro, Marcelo Luís Gomes;Araújo, José Anchieta de;Costa, Fernando Guilherme Perazzo;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000700027
Abstract: the effect of antimicrobial (a) replacement with dehydrated egg (de) and of type of litter (new and recycled) used in the floor covering on pullet performance was evaluated in 1,440 1-d chicks, 720 of each strain (white and brown), allotted to 72 boxes (1 x 1.5 m). recycled litter consisted of sugar cane bagasse containing droppings of broilers chicks with symptoms of coccidiose. the pullets were weighed and assigned to a complete randomized design with a 3 x 2 x 2 (three diets x two litter x two strains) factorial arrangement, in a total of 12 treatments with six replications of 20 pullets. the experimental diets (d) were: d1 = diet with commercial dose of antimicrobial; d2 = diet without antimicrobial; and d3 = diet without antimicrobial + 0.6% of de. de was composed by dehydrated yolk+albumen (55°c for 72 hours) and showed negative result to samonella spp. test. the use of recycled litter decreased pullet performance of two genetic groups, specially the brown ones, that showed lower weights of spleen and bursa of fabricius. this fact suggests better enlargement of lymphoid tissues, and that probably explains the smaller tolerance of white pullets to recycled litter. the antimicrobials minimize negative effect of recycled litter on pullet performance. dehydrated egg is a good alternative to antimicrobials and can improve performance of pullets in the pre-starter on conventional environment.
Farelo de trigo e complexo enzimático na alimenta??o de frangas de reposi??o
Araujo, Daniel de Magalh?es;Silva, José Humberto Vilar da;Araujo, José Anchieta de;Ribeiro, Marcelo Luiz Gomes;Pascoal, Leonardo Augusto Fonseca;Costa, Fernando Guilherme Perazzo;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000600040
Abstract: this study was carried out with the aim of evaluating the effects of the inclusion of the wheat bran (wb) and the addition of an enzymatic complex (ec), amylase, protease and celullase contained, on the performance of semi-heavily pullets from 14 weeks of age and its residual effect on egg-production phase. 288 pullets were used, distributed in a completely randomized design in a factorial arrangment 4x2, being the following levels of wb in the ration: 0 (control), 10, 20 and 30% x 0 or 50g of a ec/100 kg of diet, resulting in eight treatments, with six replicates of six birds. the ec contained the enzymes amylase, protease and celullase. in the growth phase, fi, wg, fc and lw showed better for the birds that received the diets without ft. the addition of the ec decreased the consumption in the diets with 0 and 30% of wb. during the production phase, the use ec in the level 0% of wb increased lw of the birds, but it reduced in the level 30% of wb. the production of eggs fell in the level of 20% of wb when the diet was supllementing with ec. the feed conversion in the level of 10% of wb was similar to the control. quadratic effect of the level of wb was observed on the feed egg-mass conversion, that was better with 8,01%. therefore, it is recommended up to 8.01% of inclusion of the wheat bran in the ration of semi-heavily pullets from 14 to 19 weeks of age.
Exigência de sódio para poedeiras no final do primeiro ciclo e durante o segundo ciclo de postura
Ribeiro, Marcelo Luís Gomes;Silva, José Humberto Vilar da;Araujo, José Anchieta de;Martins, Terezinha Domiciano Dantas;Costa, Fernando Guilherme Perazzo;Givisiez, Patrícia Emília Naves;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008000700017
Abstract: two experiments were carried out to estimate sodium requirements for brown-eggs laying hens in the late first and during second egg-production cycle. a completely randomized design was used, with seven sodium levels (0.08, 0.13, 0.18, 0.23, 0.28, 0.33 and 0.38%), six replications of six birds in the late first egg-production cycle and five replications of six birds in the second egg-production cycle. in the late first egg-production cycle, sodium levels (sl) had no effect on feed intake (fi), egg weight (ew), egg dozen feed conversion (edc) and egg-shell specific gravity (sg). the sl showed quadratic effect on egg production (ep), egg mass (em) and egg mass feed conversion (emc), that resulting in sodium requirements (sr) of 0.21, 0.22 and 0.21%, respectively. in the second egg-production cycle, sl had no effect on ew and sg. however, ep, em, emc and edc improved when the levels of sodium were 0.20, 0.19, 0.18 and 0.19%, respectively. considering the estimates of sodium requirements to egg production and egg mass feed conversion, could be suggests 0.22% e 0.20% as maximum sodium levels, respectively, to late first and second egg-production cycle.
Insights on the fractal-fracture behaviour relationship
Rodrigues, José de Anchieta;Pandolfelli, Victor Carlos;
Materials Research , 1998, DOI: 10.1590/S1516-14391998000100008
Abstract: the fractals theory has been increasingly applied in the field of materials science and engineering. models of fractal lines and surfaces have been generated to describe the microstructural features of materials. special interest is placed upon a description of the fracture surface based on a fractal geometry in order to understand the crack path in materials. several papers have demonstrated the relationship between the fractal dimension of a fracture surface and the values of roughness and fracture toughness. in this work an extension of the theory of fractals for ceramic materials is proposed, to which the crack deflection toughening mechanism is thought to be related. in order to accomplish this objective, a review describing the concept of fractals and its relationship with the fracture toughness is presented. in the following part, a correlation between fractal dimension, total energy of fracture and the average resistance to crack propagation is proposed; all these parameters being dependent on the history and on the complexity of crack propagation path.
Insights on the fractal-fracture behaviour relationship
Rodrigues José de Anchieta,Pandolfelli Victor Carlos
Materials Research , 1998,
Abstract: The fractals theory has been increasingly applied in the field of materials science and engineering. Models of fractal lines and surfaces have been generated to describe the microstructural features of materials. Special interest is placed upon a description of the fracture surface based on a fractal geometry in order to understand the crack path in materials. Several papers have demonstrated the relationship between the fractal dimension of a fracture surface and the values of roughness and fracture toughness. In this work an extension of the theory of fractals for ceramic materials is proposed, to which the crack deflection toughening mechanism is thought to be related. In order to accomplish this objective, a review describing the concept of fractals and its relationship with the fracture toughness is presented. In the following part, a correlation between fractal dimension, total energy of fracture and the average resistance to crack propagation is proposed; all these parameters being dependent on the history and on the complexity of crack propagation path.
Teores carboidratos contidos em raízes, sarmentos e folhas da videira cultivar Itália
Essione Ribeiro Souza,Valtemir Gon?alves Ribeiro,José Anchieta Assun??o Pionório
Pesquisa Aplicada & Agrotecnologia , 2011, DOI: 10.5777/1430
Abstract: A cv. Itália é a principal representante das uvas finas de mesa com sementes no Vale do Submédio S o Francisco, e, por ser uma cultivar introduzida na regi o, ajustes de manejo cultural tem sido necessários para torná-la mais produtiva. Análises de teores de carboidratos em raízes, sarmentos e folhas da cv. Itália, enxertada sobre o porta-enxerto IAC-313 (‘Tropical’) foram realizadas e correlacionadas com as taxas de fertilidade de gemas de sarmentos situados em diferentes posi es do bra o primário das plantas. Verificou-se que a fertilidade de gemas varia de acordo com a posi o dos sarmentos nas plantas, havendo uma correla o positiva entre a fertilidade potencial de gemas e os teores de amido e de a ucares totais, e que a express o da fertilidade de gemas em sarmentos situados na posi o basal da planta é maior.
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