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Search Results: 1 - 10 of 15551 matches for " Murillo Villela Filho "
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Chemistry Based on Renewable Raw Materials: Perspectives for a Sugar Cane-Based Biorefinery
Murillo Villela Filho,Carlos Araujo,Alfredo Bonfá,Weber Porto
Enzyme Research , 2011, DOI: 10.4061/2011/654596
Abstract: Carbohydrates are nowadays a very competitive feedstock for the chemical industry because their availability is compatible with world-scale chemical production and their price, based on the carbon content, is comparable to that of petrochemicals. At the same time, demand is rising for biobased products. Brazilian sugar cane is a competitive feedstock source that is opening the door to a wide range of bio-based products. This essay begins with the importance of the feedstock for the chemical industry and discusses developments in sugar cane processing that lead to low cost feedstocks. Thus, sugar cane enables a new chemical industry, as it delivers a competitive raw material and a source of energy. As a result, sugar mills are being transformed into sustainable biorefineries that fully exploit the potential of sugar cane. 1. Introduction In a market economy, corporations aim to maximize profit. Governments or society in general impose constraints on and regulate the maximization of profit. Product quality, operational safety, and respect for the environment all have to be fulfilled. To maximize profit, the chemical industry always seeks the most competitive feedstock. When competitive feedstock is available, opportunities for new processes and technologies arise. Technology for converting carbon dioxide into a feedstock source has been developed and used in Brazil since the inception of Pro-álcool, the Brazilian national alcohol program, in the 1970s [1]. Given the legislation, the market demand for sustainable products, and the progress being made in biotechnology and catalysis, developers are working on new processes, which are giving rise to a wide range of biobased products. The old sugar mills (engenhos) have become efficient industrial facilities (usinas) that produce sweeteners, ethanol, and bioenergy. Recent developments involve transforming sugar mills into biorefineries. Besides sweeteners, biofuel, and bioenergy, the biorefineries will be able to produce bioplastics and other chemicals by using the whole cane via alcohol chemistry and fermentative routes. This essay analyzes the industry’s historical response to new developments stemming from the rise of competitive feedstock and the opportunities that it creates. It focuses on sugar cane, its availability as a feedstock source, and the technologies that can turn sugar cane into an important starting point for chemistry of the future. Based on recent examples of processes and market developments, a new arrangement of integrated agroindustry, processing sugar cane and yielding higher value
A viabilidade econ mica de empreendimentos no setor da constru o civil: estudo de caso dos revestimentos ceramicos
Murillo Corrêa da Silva Filho,Nelio Domingues Pizzolato
Sistemas & Gest?o , 2011,
Abstract: Este artigo tem como objetivo estudar a viabilidade econ mica de um empreendimento industrial na área da constru o civil, mais especificamente a de revestimentos ceramicos. Diante de seus múltiplos tipos de produtos e variadas aplica es na constru o, esse setor vem mostrando um excepcional desenvolvimento, o que induz a um crescente nível de investimentos, tanto na quantidade como na qualidade dos produtos. Por outro lado, devido à elevada produ o do Brasil e sua significativa importancia no cenário internacional, oestudo examina o mercado mundial do setor, destacando a participa o dos principais países produtores, consumidores e exportadores. A metodologia do trabalho envolveu a pesquisa sobre a literatura disponível, sites correlatos, dados das associa es de classe, dados tecnológicos e de custos para um determinado empreendimento e métodos de avalia o econ mica de projetos. Na parte final do trabalho é feito um estudo de caso hipotético de análise de viabilidade econ mica, com utiliza o ou n o de financiamento a longo prazo, de uma pequena indústria de revestimentos ceramicos em um pólo industrialno Estado de S o Paulo, segundo diversos cenários de pre o de venda posto fábrica e um dado retorno exigido de 15%. O estudo de caso conclui que a viabilidade do projeto é incerta, dependendo de pre os de mercado mais elevados; conclui também que os financiamentos melhoram fortemente a viabilidade desses projetos, assim como a aceita o de uma taxa de retorno inferior tenderia a viabilizar este investimento.
Qualidade de sementes de couve brócolis beneficiadas em mesa densimétrica
Gadotti, Gizele Ingrid;Corrêa, Carla Lima;Lucca Filho, Orlando Ant?nio;Villela, Francisco Amaral;
Revista Brasileira de Sementes , 2006, DOI: 10.1590/S0101-31222006000200016
Abstract: the results of developed research demonstrate the efficiency of the densimetric table in the improvement of the quality of seed lots of diverse species, evidencing superior physiological and sanitary quality of the seeds in the upper positions in relation to the lower positions of the discharge zone. considering the few reports on the improvement of vegetable seeds, especially borecole broccolis and, moreover the desuniformity of maturation of this species, that is reflected in the specific weight of the seeds, is important to study the influence of the use of the densimetric table on the performance of borecole broccolis seeds. the present study was carried out to verify the physiological and sanitary quality of borecole broccolis seeds, benefited by the densimetric table. the seeds had initially been cleaned in an air machine and sieved and then benefited on the densimetric table. the terminal axle of discharge of the 1.00m wide densimetric table was divided into four parts. the treatments consisted of the fractions obtained in the feed deposit and the high, intermediate high, intermediate decrease and low parts of the discharge zone of the densimetric table. the borecole broccolis seeds unloaded in the high part of the discharge zone of the densimetric table presented significantly superior physiological quality to the seeds unloaded in the lower part, and the intermediate fraction decrease, and the removal of the fraction directed for the part low is recommended to improve the physiological and sanitary attributes of the lot.
Estado energético da água na germina??o de semente de soja
Villela, Francisco Amaral;Novembre, Ana Dionisia da Luz Coelho;Marcos Filho, Julio;
Revista Brasileira de Sementes , 2007, DOI: 10.1590/S0101-31222007000100004
Abstract: the water potential of the seed or seed parts provides a better indicator of the seed water status than water concentration. this study examined the imbibition process and the water status of soybean seed and embryonic axis during seed germination. two soybean seed lots, cultivars brs-157 and brs-132, were tested. seeds were hydrated between six layers of paper towel, inside a plastic box, at 25°c. seed moisture content was determined by weighting samples of 100 seeds each during warter uptake process and, for embryonic axis and cotyledons, by the oven method (105 ± 3°c/24h). seed water potential was measured by the hygrometric method using a thermocouple. the embryonic axis absorbs water faster than the cotyledons and reaches higher moisture content during germination. at the moment of the radicle protrusion the water potential of the embryonic axis is unique, independently of seed cultivar and physiological potential.
Estado energético da água na semente de milho no processo de germina??o
Villela, Francisco Amaral;Marcos Filho, Julio;Novembre, Ana Dionisia da Luz Coelho;
Revista Brasileira de Sementes , 2003, DOI: 10.1590/S0101-31222003000100015
Abstract: this study examined the imbibition process and the water status of maize seed and excised embryos during seed germination. two maize seed lots, cultivars zeneca 8330 and 8420, were tested by germination, accelerated ageing, electrical conductivity, cold test and field seedling emergence to identify the initial physiological quality of each seed lot and to determine the relationship of the pathway of water uptake and seed quality. seeds were hydrated between six layers of paper towel, inside a plastic box, at 25°c. seed moisture was determined by the weighing samples of 100 seeds each and by the oven method (105 ± 3°c/24h). seed water potential was determined by the hygrometric method through the use of a thermocouple. it was concluded that the embryo absorbs less water than the endosperm during the imbibition process. the rates of seed water uptake are related to physiological quality, as low vigour seed lot increased in moisture content faster than that of high quality. in contrast, the water potential was not affected by seed quality and cultivar. these findings suggest that the water status of seed plays a regulatory role in seed germination.
Supplementation for steers on pasture during the rainy period: intake, digestibility and ruminal parameters Suplementa o para bovinos em pastejo no período das águas: consumo, digestibilidade e parametros ruminais
Severino Delmar Junqueira Villela,Mário Fonseca Paulino,Sebasti?o de Campos Valadares Filho,Edenio Detmann
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: Supplements with different protein sources were evaluated during the rainy seasons. The supplements were supplied in base of 500g per day. The following treatments were used: soybean meal and wheat bran; wheat bran and urea; cottonseed meal (38 % crude protein); wheat bran, cottonseed meal and urea; and the control. The nutritional parameters were evaluated in five animals with initial average weight and age of 219kg and 14 months respectively, fistulated in the esophagus and in the rumen, distributed in five paddocks of 0.3 hectares in a 5 × 5, incomplete latin square design. There was no effect of supplementation or protein sources over the nutrients intake or dry matter intake from pasture. The dry matter and neutral detergent fiber digestibility obtained in cottonseed meal containing 38% crude protein was inferior to others. There was no effect in the treatments under the pH, which average value was 6.41. The higher ruminal concentration of ammonia was to treatment with wheat bran and urea, that contained the highest value of urea when compared to the other treatments. There was no negative effect of supplementation (500g per day) or protein sources the nutritional parameters evaluated. Objetivou-se avaliar suplementos formulados com diferentes fontes de proteína fornecidos a bovinos no período das águas, na quantidade de 500g/dia. Utilizaram-se as seguintes matérias primas na formula o dos suplementos: farelo de soja e farelo de trigo; farelo de trigo e ureia; farelo de algod o (38 % de proteína bruta); farelo de trigo, farelo de algod o e ureia; e o testemunha (sal mineral). As variáveis nutricionais foram avaliadas em cinco animais com idade e peso médios iniciais de 14 meses e 219kg, fistulados no es fago e no rúmen, distribuídos em cinco piquetes de 0,3 hectares, com utiliza o do delineamento em quadrado latino 5x5 incompleto. N o houve efeito da suplementa o ou das fontes de proteína sobre o consumo de nutrientes ou consumo de matéria seca do pasto. As digestibilidades da matéria seca e da fibra em detergente neutro obtidas no tratamento com farelo de algod o com 38 % de proteína bruta foram inferiores às dos demais tratamentos. O pH ruminal n o foi afetado pelos tratamentos, cujo valor médio foi de 6,41. A concentra o de am nia ruminal foi maior para o suplemento com farelo de trigo e ureia. Assim, recomenda-se o fornecimento de suplementos múltiplos no período das águas, na quantidade de 500g/animal/dia, independente da fonte proteica utilizada.
Suplementa o para bovinos em pastejo no período de transi o águas-seca: variáveis nutricionais Suplementation for steers on pasture during the transition phase between the rainy and the dry periods
Severino Delmar Junqueira Villela,Mario Fonseca Paulino,Sebasti?o de Campos Valadares Filho,Edenio Detman
Revista Brasileira de Saúde e Produ??o Animal , 2010,
Abstract: Objetivou-se avaliar suplementos múltiplos formulados com diferentes fontes de proteína fornecidos a bovinos no período de transi o águas/seca na base de 0,4% PV (1,0kg/dia). Utilizaram-se os tratamentos a base de: farelo de soja e farelo de trigo, farelo de trigo e ureia, farelo de algod o (38% de PB), farelo de trigo, farelo de algod o (38% de PB) e,ureia e o tratamento testemunha. As variáveis nutricionais foram avaliadas em cinco novilhos com idade e peso médios iniciais de 17 meses e 249kg, fistulados no es fago e no rúmen, distribuídos em cinco piquetes de 0,3 hectare, com disponibilidade média de forragem de 2.290kg/ha durante o experimento. O delineamento estatístico utilizado foi quadrado latino 5x5 incompleto. O teor de proteína bruta da forragem coletada via extrusa, foi em média 10,28%. A suplementa o, de modo geral, proporcionou aumento no consumo de MS, sem afetar o consumo de MS de pasto ou consumo de fibra em detergente neutro. A digestibilidade da MS encontrada para o tratamento a base de farelo de soja e trigo foi superior à do tratamento com farelo de algod o, com 38% de proteína e ao testemunha. O valor médio do pH foi 6,42. A concentra o de N-NH3 ruminal foi maior para os tratamentos farelo de trigo e ureia, farelo de soja e trigo, farelo de algod o, trigo e ureia em rela o ao tratamento com farelo de algod o (38% de PB), que foi maior que o testemunha. Os valores encontrados para NDTobs foram superiores aos do NDTest para todos os tratamentos. Supplements with different protein sources were evaluated during the transition phase between the rainy and the dry seasons. The supplements were supplied in base of 0.4 % LW (1.0kg per day). The following treatments were used: soybean meal and wheat meal, wheat meal and urea, cottonseed meal 38% of CP, cottonseed meal 38%, soybean meal and urea and control. The nutritional parameters were evaluated in five steers with initial average weight and age of 249Kg and 17 months respectively, fistulated in the esophagus and in the rumen, distributed in five paddocks of 0.3 hectares. The statistical design was incomplete 5X5 Latin Square. The supplementation in general provided increase in the DM intake in kg/day or in relation to LW not affecting the intake of pasture DM or of NDF. The digestibility of the DM found in the soybean meal and wheat was superior to cottonseed meal with 38% of CP and control. The average for pH was 6.42. The ruminal concentration of N-NH3 was higher for treatments whit wheat bran and urea, wheat and soybean meal, cottonseed meal, wheat and urea in relation to treatmen
Avalia o da qualidade do servi o de logística: um estudo de caso empírico do setor farmacêutico
José Ignácio Villela Júnior,Gustavo Quiroga Souki,Cid Gon?alves Filho
Revista de Administra??o da UFSM , 2008,
Abstract: The opening of markets caused a great change in customer-supplier relationships. Regarding to this new context, it is up to companies to implement strategies that consider this new reality and differentiate them from their competitors. In a view of the fact that it is necessary to attend to customer expectations at a cost which guarantees minimum profitability to a company, customer service management becomes an important variable in guaranteeing a company’s competitive advantage. In this situation, the issue, which is the object of this research, arises at this point: how to evaluate the logistic services quality provided by a pharmaceutical companies from the point of view of its retail customers? This research has been developed through a survey measuring a reliable scale of Logistics Service Quality in a pharmaceutical industry.
Epidemiologia da mela e produtividade do feijoeiro-comum tratado com fungicidas Epidemiology of Thanatephorus web blight and grain yield of the common bean treated with fungicides
Gesimária Ribeiro Costa-Coelho,Murillo Lobo Júnior,Adalberto Corrêa Café-Filho
Summa Phytopathologica , 2012, DOI: 10.1590/s0100-54052012000300005
Abstract: O efeito dos fungicidas azoxistrobina, carbendazim, mancozebe, tebuconazole, hidróxido de fenilestanho, piraclostrobina, trifloxistrobina + ciproconazol, trifloxistrobina + propiconazol e clorotalonil no progresso da mela e na produtividade do feijoeiro foi avaliado em campo e casa de vegeta o. No campo, três experimentos foram conduzidos nas esta es chuvosas de 2004/05, 2005/06 e 2006/07, em blocos ao acaso com quatro repeti es.Na safra 2004/05 foi realizada apenas uma aplica o, aos 45 dias após o plantio (DAP); em 2005/06 foram realizadas duas aplica es aos 30 e 45 DAP e em 2006/07 foram realizadas três aplica es, aos 30, 45 e 60 DAP. A avalia o da severidade da doen a foi feita semanalmente, atribuindo-se notas de 1 (sem sintomas) a 9 (acima de 90% da área foliar destruída) e taxas de progresso da doen a foram calculadas após o ajuste das curvas de progresso ao modelo logístico. Os resultados mostraram que uma única aplica o de qualquer dos produtos, aos 45 DAP, foi ineficiente para o controle da taxa de progresso da mela (taxa média, r = 0,2348). A eficiência do controle aumentou com o incremento do número de aplica es e aplica es mais precoces, iniciando-se aos 30 DAP (médias de r = 0,1988 e 0,1671 em 2005/06 e 2006/07, respectivamente). Com três aplica es,as menores severidades de doen a foram observadas com hydróxido de fenil estanho, trifloxistrobina + propiconazol e trifloxistrobina + cyproconazol. Em casa de vegeta o, o efeito protetor e curativo dos fungicidas foi estudado com aplica o dos produtos em pré ou pós-inocula o de folíolos, através da avalia o do diametro das les es. Todos os fungicidas apresentaram tanto efeito protetor quanto curativo, mas os melhores resultados foram observados em aplica o preventiva.Foi encontrada alta correla o negativa entre intensidade da mela e a produ o do feijoeiro e o ganho em produtividade com uso de fungicidas chegou a 304 %. Results of three years of field and greenhouse studies on the effects of the fungicides azoxystyrobin, carbendazin, mancozeb, tebuconazole, fentinhydroxide, pyraclostrobin, tryfloxistrobin + cyproconazole, tryfloxistrobin + propiconazol and chlorotalonil on the epidemiology of bean web blight and bean yields are reported. Field experiments were conducted during the rainy seasons of 2004/05, 2005/06 and 2006/07. Experimental design was a randomized complete block with four replicates. In 2004/05, fungicides were applied only once, 45 after planting (DAP); in 2005/06, there were two applications at 30 and 45 DAP, and in the 2006/07 field season, three applications w
Substitui??o valvar isolada com próteses metálicas St. Jude Medical em posi??o aórtica ou mitral: seguimento de médio prazo
Rodrigues, Alfredo José;évora, Paulo Roberto Barbosa;Bassetto, Solange;Alves Jr., Lafaiete;Scorzoni Filho, Adilson;Vicente, Walter Villela A.;
Arquivos Brasileiros de Cardiologia , 2009, DOI: 10.1590/S0066-782X2009000900014
Abstract: background: in our country, the biological valvular prostheses predominate, considering the difficulties related to anticoagulation, even in young patients, in spite of the need for repeated operations due to the degeneration of the bioprostheses. objectives: to report our consecutive series of recipients of isolated st jude medical mechanical valve prosthesis in the mitral (mvr) or aortic (avr) position. methods: data from patients operated between january 1995 and december 2003 were revised in order to determine patient survival and prosthesis-related events up to december 2006. results: one hundred sixty eight patients had mvr and 117 had avr. in the mvr cohort, the mean age was 45 years, 75% were 55 years old or younger, and 65% were females. in the arv cohort, the mean age was 45 years, 66% were 55 years old or younger and 69% were males. operative mortality for avr and mvr was 7% and 7.5%, respectively. freedom from late mortality was 81.8% at 10 years for mvr and 83% for avr (p=0.752). freedom from valve-related death at 10 years for the mvr cohort and avr was 85.6% and 88.7%, respectively (p=0.698). in the mvr cohort, the freedom from reoperation was 97% and 99% in the avr cohort (p=0.335). freedom from thromboembolic events was 82% in the mvr cohort and 98% in the avr cohort (p=0.049). freedom from bleeding was 71% in the mvr cohort and 86% n the avr cohort (0.579). freedom from endocarditis was 98% in the mvr cohort and 99% in the avr cohort (p=0.534). conclusions: this series of predominantly young adult patients undergoing isolated mvr and avr with the st jude medical mechanical prosthesis confirms the good performance of this valve prosthesis in agreement with previous reports.
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