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Search Results: 1 - 10 of 11945 matches for " Mateus Lana Borges Moraes "
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CARACTERIZA??O DA FERTILIDADE DOS SOLOS DE QUATRO LEGUMINOSAS DE CAMPOS RUPESTRES, SERRA DO CIPó, MG, BRASIL
Negreiros,Daniel; Borges Moraes,Mateus Lana; Wilson Fernandes,Geraldo;
Revista de la ciencia del suelo y nutrición vegetal , 2008, DOI: 10.4067/S0718-27912008000300003
Abstract: the goal of the present study was to characterize the nutritional quality of the soils colonized by four endemic leguminous shrubs of serra do cipo, southeastern brazil: calliandra fasciculata benth., chamaecrista ramosa (vog.), collaea cipoensis fortunato and mimosa foliolosa benth. a mixed soil sample collected between 0 and 15cm depth was obtained in four subpopulations of each species. each mixed sample resulted from the combination of 20 simple samples (four samples of five adult individuals) in each subpopulation. routine, organic matter, micronutrients, and granulometric analysis were performed for each sample. the soils colonized by the four species were sandy, acidic, deficient in all macronutrients, and with high aluminum saturation. however, the levels of organic matter, zinc, iron, and bore ranged from medium to high. there was no significant difference in organic matter, phosphorus, iron, bore, sulphur, potential acidity, and granulometric parameters among the soils of the four species. the results of the present study corroborate previous studies in rupestrian field soils of serra do cipo. management plans and land rehabilitation programs should keep the conditions of low soil fertility because the endemic flora adapt well on these soils and may have increased competitive ability under these nutritional ranges.
CARACTERIZA O DA FERTILIDADE DOS SOLOS DE QUATRO LEGUMINOSAS DE CAMPOS RUPESTRES, SERRA DO CIPó, MG, BRASIL Characterization of soil fertility of four leguminous shrubs of rupestrian fields, Serra do Cipo, MG, Brazil
Daniel Negreiros,Mateus Lana Borges Moraes,Geraldo Wilson Fernandes
Revista de la Ciencia del Suelo y Nutrición Vegetal , 2008,
Abstract: O presente trabalho teve como objetivo caracterizar a qualidade nutricional dos solos de popula es naturais de quatro especies de leguminosas de campo rupestre: Calliandra fasciculata Benth., Chamaecrista ramosa (Vog.), Collaea cipoensis Fortunato e Mimosa foliolosa Benth. Urna amostra composta de solo na profundidade de 0 a 15cm foi coletada em quatro subpopula es de cada especie. Cada amostra composta resultou da coleta de 20 amostras simples (quatro amostras em cinco individuos adultos) por subpopula o. Foram feitas análises de rotina (pH, P, K, Ca21, Mg21, Al31, H+Al), materia organica, micronutrientes e granulométrica. Os solos apresentaram acidez elevada, baixa fertilidade, alta satura o de aluminio e textura predominantemente arenosa. Entretanto, n o foram encontrados baixos teores de materia organica, B, Fe e Zn. Os solos diferiram significativamente entre si nos teores de materia organica, P, Fe, B, H+Al e textura. Os resultados obtidos est o de acordó com outros levantamentos realizados em solos de campo rupestre na Serra do Cipo. Planos de manejo e reabilita o de áreas degradadas em campo rupestre devem procurar manter as condi es de baixa fertilidade desses solos, visto que a flora endémica de campo rupestre mostra boa adapta o a estas condi es, podendo apresentar maior vantagem competitiva dentro desse espectro nutricional. The goal of the present study was to characterize the nutritional quality of the soils colonized by four endemic leguminous shrubs of Serra do Cipo, southeastern Brazil: Calliandra fasciculata Benth., Chamaecrista ramosa (Vog.), Collaea cipoensis Fortunato and Mimosa foliolosa Benth. A mixed soil sample collected between 0 and 15cm depth was obtained in four subpopulations of each species. Each mixed sample resulted from the combination of 20 simple samples (four samples of five adult individuals) in each subpopulation. Routine, organic matter, micronutrients, and granulometric analysis were performed for each sample. The soils colonized by the four species were sandy, acidic, deficient in all macronutrients, and with high aluminum saturation. However, the levels of organic matter, zinc, iron, and bore ranged from medium to high. There was no significant difference in organic matter, phosphorus, iron, bore, sulphur, potential acidity, and granulometric parameters among the soils of the four species. The results of the present study corroborate previous studies in rupestrian field soils of Serra do Cipo. Management plans and land rehabilitation programs should keep the conditions of low soil fertility because the
Foreign Trade & Infrastructure: The Brazilian Small Business Reality  [PDF]
Isabela Lana, Renata Borges, Isabella Reis
iBusiness (IB) , 2014, DOI: 10.4236/ib.2014.62006
Abstract:

Internationalization is a process in which organizations increase their economic activities in international markets. Specifically small business should aim internalization to become more competitive since their competitors are not only local companies but also multinational organizations. However, a medium or small size business from Brazil faces considerable challenges to internationalize such as the lack of Brazilian infrastructure. Therefore, given the importance of internationalization to the Brazilian economy and the role of small business in the global market, this study analyzes the struggles of a Brazilian small mining company through the exportation process of its main product—a high quality silica. As result, this study shows how significant can be national and international transportation costs as well as the costs related to wharfage. In fact, surprisingly, this study revealed that the costs related to national transportation are greater than the international shipment. We conclude that the main obstacle to enhance exportation in Brazil is in fact the transportation infrastructure, representing the bottleneck of Brazilian infrastructure even for small business focused on the national market.

A CARTOGRAFIA E O ENSINO DE GEOGRAFIA: UMA EXPERIêNCIA REALIZADA COM ALUNOS DO ENSINO FUNDAMENTAL EM GOI NIA- GOIáS
Lo?andra Borges de Moraes
Boletim Goiano de Geografia , 2002,
Abstract: .
The two-headed snake in the view of the inhabitants of Itatiaia village, Minas Gerais, Brazil
Michelle Barbosa Mateus,Lorena Cristina Lana Pinto,Mário Ribeiro de Moura,Maria Rita Silvério Pires
Biotemas , 2011,
Abstract: Amphisbaenids are fossorial Squamate reptiles popularly known as two-headed snakes. They are animals poorly known in urban areas, although being present in the daily life of the rural population. Aiming to document the folk knowledge, as well as the superstitions with regard to these animals, this ethnobiological study was developed in Itatiaia village, Minas Gerais, Brazil. Between April and November 2009, ecological and biological aspects of amphisbaenids were approached through interviews with 48 villagers. Only the individuals who allowed the access to their knowledge and beliefs were interviewed. Data were analyzed using the union model of several individual competences. According to the number of inhabitants who were interviewed, it is possible to say that the population classifies amphisbaenids as snakes, considering them dangerous animals, thus favoring their death whenever they are found. The ethnozoology can be used as an important tool for obtaining information about amphisbaenids and, if combined to educational activities, it may also contribute to the conservation of these animals.
Efeito da acidez no controle da produ??o de am?nia e crescimento microbiano
Lana, Rogério de Paula;Cunha, Luciane Tavares da;Borges, Arnaldo Chaer;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000600037
Abstract: this research had as objective the evaluation of the acidity effect (ph) by adding increasing levels of corn starch on the degradation of hydrolyzed casein (tripticase). the rumen fluid was taken from a fistulated steer in a 40% concentrate diet, and centrifuged at 500xg in 15 minutes to remove feed particles and protozoa. the incubations were done in an anaerobic environment at 39oc in vacuntainer? tubes. it was used 150 mg of tripticase and 0, 25, 50, 75, 100, 200 and 300 mg of corn starch in 10 ml rumen fluid. samples were collected over the incubations and the ph, ammonia and microbial protein measured. the starch had small effect on microbial growth, but levels of 50 mg/10 ml and on completely inhibited the ammonia production. the inhibition was probably due to ph effect, since it showed higher correlation with ammonia production than the starch (0.95 vs. -0.59). once the largest amount of tripticase was used for ammonia production, and that it was highly inhibited by acidity, mild decrease in ruminal ph by the use of concentrate can be useful to reduce losses of dietary protein by ruminal fermentation. in fact, higher amount of degradable protein could be added to the diet, helpfully the benefit of the synchronism of the starch and protein sources, as for their degradations, in the formulation of diets for ruminant animal.
Efeito da monensina na fermenta??o da proteína de algumas fontes de alimentos
Lana, Rogério de Paula;Cunha, Luciane Tavares da;Borges, Arnaldo Chaer;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000600036
Abstract: this research aimed to evaluate the monensin effect on protein degradation of soybean meal, wheat middlings and corn meal. the rumen fluid was taken from a fistulated steer fed a 40% concentrate diet. the incubations were done in an anaerobic environment at 39oc. it was used 100 mg of each feedstuff, 14.7 ml of ruminal fluid and 0.3 ml of ethanol with or without dissolved monensin (5 μm was the final concentration). the soybean meal, compared with wheat middlings and corn meal, showed great values of ammonia production, microbial protein, final ph and specific activity of ammonia production (saap). the greatest ammonia production was due to higher protein content and high degradability of the soybean meal, associated with higher media ph, that stimulates deamination. the wheat middlings showed greater final ph and saap than corn meal, which was a feedstuff with lower degradability. the monensin decreased the saap and protein degradability, although it was more effective in reducing protein degradation in higher ph values. monensin provides higher efficiency of protein utilization by ruminants in diets with high protein/carbohydrate fermentation rates and high ruminal ph, as in the case of young grasses pastures and forage legumes.
Efeito da Monensina e Lasalocida sobre a Atividade de Fermenta o de Aminoácidos in Vitro pelos Microrganismos Ruminais
Lana Rogério de Paula,Oliveira Juliana Silva de,Borges Arnaldo Chaer,Veloso Rafael Gon?alves
Revista Brasileira de Zootecnia , 2002,
Abstract: Este experimento visou estudar os efeitos in vitro dos ionóforos sobre a fermenta o ruminal de aminoácidos. Utilizou-se líquido de rúmen de um novilho alimentado com dieta à base de capim-elefante, acrescentando solu o de tripticase, em três tratamentos (controle-C, monensina-M e lasalocida-L). Foram feitas transferências diárias de inóculos para novos tubos e, no 11o dia, cada tratamento deu origem a três novos (C, M, L), totalizando nove combina es (2a fase). Do 1o ao 10o dia de incuba o, os ionóforos evitaram o aumento expressivo na produ o de am nia comparado ao controle. Do 11o ao 12o dia, os ionóforos foram mais eficientes em decrescer a produ o de am nia quando os mesmos estavam ausentes na 1a fase; e a lasalocida foi ainda capaz de diminuir a produ o de am nia e a concentra o de proteína microbiana quando a monensina estava presente na 1a fase. Do 16o ao 20o, dia verificou-se, independentemente dos tratamentos da 1a fase, que os ionóforos diminuíram a produ o de am nia. Entretanto, os ionóforos reduziram a concentra o de proteína microbiana do tratamento controle da 1a fase e aumentaram dos tratamentos contendo ionóforos. Por outro lado, verificou-se que, ao remover os ionóforos na 2a fase, houve aumento significativo na produ o de am nia, sendo que este efeito n o foi detectado no 11o e 12o dias, provavelmente pelo efeito residual dos ionóforos.
Efeito da acidez no controle da produ o de am nia e crescimento microbiano
Lana Rogério de Paula,Cunha Luciane Tavares da,Borges Arnaldo Chaer
Revista Brasileira de Zootecnia , 2000,
Abstract: Este trabalho foi conduzido com o objetivo de avaliar o efeito da acidez pela adi o de níveis crescentes de amido sobre a degrada o da caseína hidrolisada (tripticase). Utilizou-se o líquido de rúmen de um novilho fistulado recebendo 40% de ra o concentrada. As incuba es foram feitas anaerobicamente a 39oC. Utilizaram-se 150 mg de tripticase e 0, 25, 50, 75, 100, 200 e 300 mg de amido em 10 mL de líquido de rúmen. Foram coletadas amostras ao longo das incuba es para análises de pH, am nia e proteína microbiana. O amido teve pequeno efeito sobre o crescimento microbiano, mas os níveis igual ou acima de 50 mg/10 mL de líquido de rúmen inibiram totalmente a produ o de am nia. Esta inibi o foi certamente devido ao efeito do pH, pois este teve maior correla o com a produ o de am nia que o amido (0,95 vs -0,59). Uma vez que a maior parte da utiliza o da caseína hidrolisada foi para a produ o de am nia e que esta foi altamente inibida pela acidez, conclui-se que o moderado abaixamento do pH ruminal, pelo uso de concentrado, pode acarretar redu o na perda de proteína alimentar por fermenta o. Portanto, maior quantidade de proteína degradável pode ser adicionada à ra o, justificando o benefício do sincronismo de fontes de carboidrato e proteína, quanto às suas degradabilidades, ao se formularem ra es para ruminantes.
Efeito da monensina na fermenta o da proteína de algumas fontes de alimentos
Lana Rogério de Paula,Cunha Luciane Tavares da,Borges Arnaldo Chaer
Revista Brasileira de Zootecnia , 2000,
Abstract: Este trabalho foi conduzido com o objetivo de avaliar o efeito da monensina sobre a degrada o protéica do farelo de soja, farelo de trigo e fubá de milho. Utilizou-se o líquido de rúmen de um novilho fistulado recebendo 40% de ra o concentrada. As incuba es foram feitas anaerobicamente a 39oC, utilizando-se 100 mg de alimentos em 14,7 mL de líquido ruminal e 0,3 mL de etanol contendo ou n o monensina dissolvida (5μM de monensina como concentra o final nos tubos de incuba o). O farelo de soja, comparado ao farelo de trigo e fubá, apresentou maiores valores de produ o de am nia, proteína microbiana, pH final e atividade específica de produ o de am nia (AEPA). A maior produ o de am nia foi atribuída ao alto teor de proteína e alta degradabilidade do farelo de soja e ao maior pH do meio, que aumenta a atividade de desamina o. O farelo de trigo, por sua vez, apresentou maiores valores de pH final e AEPA que o fubá de milho, demonstrando que o milho é um alimento de menor degradabilidade. A monensina diminuiu a AEPA e a degradabilidade da proteína, embora tenha sido mais efetiva em reduzir a degrada o da proteína em maiores valores de pH no meio. A monensina proporciona maior eficiência na utiliza o da proteína pelos ruminantes, quando a dieta apresenta alta rela o proteína/carboidrato fermentecível e o pH ruminal é elevado, como no caso de pastagens de gramíneas novas e leguminosas forrageiras.
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