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Search Results: 1 - 10 of 552206 matches for " Anderson de Almeida;Müller "
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Avalia??o da qualidade óssea mediante parametros morfométricos, bioquímicos e biomecanicos em frangos de corte
Barbosa, Anderson de Almeida;Moraes, George Henrique Kling de;Torres, Robledo de Almeida;Reis, Denise Torres da Cruz;Rodrigues, Conrado de Souza;Müller, Elisa Sialino;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000400011
Abstract: the objective of the experiment was to determine the biochemical, morphometrics and biomechanical aspects of femur bones of broilers. it was used six hundred male and female broilers at one day of age from three different lines (hb1 and hb2 - ufv and hb3 - commercial). they were fed ad libitum on starter (1 to 21 days), grower (22 to 35 days) and finisher (36 to 42 days) rations. the experimental design was completely randomized, in a factorial arrangement 3 × 2 (three lines and two sexes) with 5 replicates and 10 birds per experimental unit (box). the weight, length, cross-sectional area, moment of inertia, maximum load, modulus of elasticity, bending strength, collagenous and non collagenous proteins and body weight of the broilers were evaluated in the femur. at 21, 28, 35 and 42 days of age, one male and one female of each line were randomly selected per box, in a total of five boxes per line. among lines, hb3 presented higher superior body weight in all ages, and among sexes, the males were heavier. the strength of maximum load was higher for the males and lines hb3 was higher than hb1and equal to hb2 at 42 days of age. the worst results of elasticity and bending strength at 42 days of age were observed in males from line hb2, which did not differ from hb3 regarded to bending at 42 days of age and to elasticity measured in all ages, which characterizes low bone quality of the males and line hb3. biomechanical aspects of femurs bones, as modulus of elasticity and bending strength, to correct and avoid bone damages of broilers due to their heavier weight.
Perfil da aspartato aminotransferase e alanina aminotransferase e biometria do fígado de codornas japonesas
Barbosa, Anderson de Almeida;Müller, Elisa Sialino;Moraes, George Henrique Kling de;Umigi, Regina Tie;Barreto, Sergio Luiz de Toledo;Ferreira, Ronaldo Martins;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000200012
Abstract: an experiment was conducted to determine the activities of aspartate aminotransferase and alanine aminotransferase and the liver biometry of laying quails (coturnix coturnix japonica) from one to 25 days of age. ninety, day-old, quails were used. a randomized complete experimental design was used with six ages, five replicates and one animal per experimental unit. at 1, 5, 10, 15, 20 and 25 days of age five animals were sacrificed, the liver removed, weighed, frozen with liquid nitrogen and stored at -20 oc. liver samples were collected, homogenized and centrifuged to determine the homogenate aspartate aminotransferase and alanine aminotransferase activities. liver weight developed linearly with age but differently from the body weight. total aspartate aminotransferase and alanine aminotransferase activities showed a linear increase with age. total aspartate aminotransferase showed higher activities than alanine aminotransferase. at one day old, quail liver aspartate aminotransferase and alanine aminotransferase had specific activities higher than those observed at other ages. aspartate aminotransferase activity per g of liver was higher than aspartate aminotransferase at all ages studied. alanine aminotransferase activity per g of body weight showed a linear reduction with age. the data observed will allow better adjustment of the level of protein in quail feed.
Parametros químicos, bioquímicos e mecanicos de fêmures de frangos de corte submetidos a diferentes balan?os eletrolíticos
Müller, Elisa Sialino;Barbosa, Anderson de Almeida;Moraes, George Henrique Kling de;Vieites, Flávio Medeiros;Araújo, Gilson Mendes;
Revista Brasileira de Zootecnia , 2012, DOI: 10.1590/S1516-35982012000600020
Abstract: the objective of this study was to evaluate bone characteristics of broilers treated with different levels eb in the diet. a total of 935 cobb chicks of 1 day of age were distributed in a randomized blocks design with six treatments (eb: -50, 0, 50, 100, 150 and 200 meq/kg), six replicates and 26 birds per experimental unit. the basal diet for the two phases - starter, from 1 to 21 days and growth, from 22 to 42 days of age - was composed of corn and soybean meal, with electrolytic balance of 200 meq/kg. for the obtainment of the other eb levels, the basal diet was supplemented with ammonium chloride. mineral and bone protein contents and geometric parameters of femurs at 7, 14, 21 and 42 days were evaluated. at 7 days of age, birds fed the diet with eb of 200 meq/kg presented the highest magnesium content in the bone. the contents of calcium and phosphorus obtained with eb of 150 meq/kg did not differ from that achieved with eb of 200 meq/kg. the greatest calcium:phosphorus ratio was observed in bones of birds fed the diets containing eb of 0 and 50 meq/kg and the lowest content of ash was in those consuming the diet whose eb was 200 meq/kg. the electrolytic balance of 200 meq/kg feed promoted the lowest content of calcium at 42 days of age, but at the evaluation of the calcium:phosphorus ratio, it did not differ from the balance of 150 meq/kg. the content of collagenous proteins did not differ at 21 days between eb of 150 and 200 meq/kg feed. at the evaluation of the biomechanical parameters at 7 days, the highest value of maximum bending strength was obtained with the electrolytic balance of 200 meq/kg feed, demonstraiting that at 7 days of age the birds were more sensitive to variations of eb of the diet. at 14, 21 and 42 days, wider variations, from 150 to 200 meq/kg can be used in the eb levels, for they do not harm the bone properties of broilers.
Efeitos da inclus?o de farelo do resíduo de manga no desempenho de frangos de corte de 1 a 42 dias
Vieira, Patrícia Aparecida Fontes;Queiroz, José Humberto de;Albino, Luiz Fernando Teixeira;Moraes, George Henrique Kling de;Barbosa, Anderson de Almeida;Müller, Elisa Sialino;Viana, Maurício Tárcio dos Santos;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008001200014
Abstract: an experiment was carried out to evaluate the use of residue mango (mangifera indica l., var. ubá) meal (rmm) in diets of broiler chickens from 1 to 42 days old. a total of 600 male ross chicks were distributed to a completely randomized design, with 5 diets and with 6 repetitions of 20 birds each. diets consisted of the inclusion of 0.0, 2.5, 5.0, 7.5 and 10.0% of rmm in diets based on corn and soybean meal. feed consumption, average daily weight gain, feed conversion ratio and productive efficiency index were evaluated. in the period from 1 to 42 days, there was no effect of rmm levels in feed consumption. average daily weight gain and feed conversion ratio was not also affected by inclusion of 2.5 and 5.0% of rmm in the diet. the inclusion up to 5% of residue of mango meal in the diet did not affect the performance of chickens in the period from 1 to 42 days old.
Time dependent response of a rubber-toughened carbon/epoxy composite with damage accumulation
Soriano, E. de A.;Almeida, S. F. Müller de;
Journal of the Brazilian Society of Mechanical Sciences and Engineering , 2003, DOI: 10.1590/S1678-58782003000200010
Abstract: polymeric composites are frequently modeled as linear elastic materials. however, matrix-dominated properties, such as transverse and shear modulus, can display significant nonlinear time-dependence, especially under conditions of high stress and aggressive environment. this behavior is primarily due to the viscoelastic nature of the polymeric matrix. in addition, polymeric composites also present time-dependent damage growth. in this work, nonlinear viscoelastic constitutive equations were used to represent the time-dependent behavior of a rubber-toughened carbon/epoxy composite during damage growth. these equations were originally devised to characterize material response in a stable damage state. in this approach, however, nonlinearities due to damage and viscoelasticity were incorporated by the model stress-dependent functions, allowing its use in the presence of damage accumulation. a procedure was proposed and applied to separate viscoelastic and damage effects. an experimental program consisting of multiple cycle creep and recovery tests was performed to determine the time-dependence of the shear compliance and to verify the theory as well. the results obtained indicated an excellent agreement between theory and experiment. constant stress rate tests were also used to validate the application of the theory.
Time dependent response of a rubber-toughened carbon/epoxy composite with damage accumulation
Soriano E. de A.,Almeida S. F. Müller de
Journal of the Brazilian Society of Mechanical Sciences and Engineering , 2003,
Abstract: Polymeric composites are frequently modeled as linear elastic materials. However, matrix-dominated properties, such as transverse and shear modulus, can display significant nonlinear time-dependence, especially under conditions of high stress and aggressive environment. This behavior is primarily due to the viscoelastic nature of the polymeric matrix. In addition, polymeric composites also present time-dependent damage growth. In this work, nonlinear viscoelastic constitutive equations were used to represent the time-dependent behavior of a rubber-toughened carbon/epoxy composite during damage growth. These equations were originally devised to characterize material response in a stable damage state. In this approach, however, nonlinearities due to damage and viscoelasticity were incorporated by the model stress-dependent functions, allowing its use in the presence of damage accumulation. A procedure was proposed and applied to separate viscoelastic and damage effects. An experimental program consisting of multiple cycle creep and recovery tests was performed to determine the time-dependence of the shear compliance and to verify the theory as well. The results obtained indicated an excellent agreement between theory and experiment. Constant stress rate tests were also used to validate the application of the theory.
Tillering does not interfere on white oat grain yield response to plant density
Almeida, Milton Luiz de;Sangoi, Luís;Ender, Márcio;Wamser, Anderson Fernando;
Scientia Agricola , 2003, DOI: 10.1590/S0103-90162003000200008
Abstract: plant density is one of the cropping practices that has the largest impact on individual plant growth. this work was conducted to evaluate the response of white oat (avena sativa) cultivars with contrasting tillering patterns to variations in plant density. two field experiments were carried out in lages, sc, brazil, during the 1998 and 1999 growing seasons. a split plot experimental design was used. four oat cultivars were tested in the main plots: ufrgs 14, ufrgs 18, upf 16 and upf 17 using five plant densities split plots: 50, 185, 320, 455 and 550 plants m-2. five plant samples were taken 25, 34, 48, 58 and 70 days after plant emergence to assess the treatment effects on dry matter partition between main stem and tillers. ufrgs 18 promoted dry matter allocation to tillers whereas upf 17 directed dry mass mostly to the main stem. differences in dry mass allocation between the main stem and tillers had no impact on grain yield, upf 16 presenting the highest values for both growing seasons. the lack of interaction between population density and cultivar and the small effect of plant population on grain yield indicates that the oat tillering ability is not fundamental to define its grain yield.
Tillering does not interfere on white oat grain yield response to plant density
Almeida Milton Luiz de,Sangoi Luís,Ender Márcio,Wamser Anderson Fernando
Scientia Agricola , 2003,
Abstract: Plant density is one of the cropping practices that has the largest impact on individual plant growth. This work was conducted to evaluate the response of white oat (Avena sativa) cultivars with contrasting tillering patterns to variations in plant density. Two field experiments were carried out in Lages, SC, Brazil, during the 1998 and 1999 growing seasons. A split plot experimental design was used. Four oat cultivars were tested in the main plots: UFRGS 14, UFRGS 18, UPF 16 and UPF 17 using five plant densities split plots: 50, 185, 320, 455 and 550 plants m-2. Five plant samples were taken 25, 34, 48, 58 and 70 days after plant emergence to assess the treatment effects on dry matter partition between main stem and tillers. UFRGS 18 promoted dry matter allocation to tillers whereas UPF 17 directed dry mass mostly to the main stem. Differences in dry mass allocation between the main stem and tillers had no impact on grain yield, UPF 16 presenting the highest values for both growing seasons. The lack of interaction between population density and cultivar and the small effect of plant population on grain yield indicates that the oat tillering ability is not fundamental to define its grain yield.
Adapta??o da escala de homofobia implítica e explícita ao contexto brasileiro
Marinho, Carla de A.;Marques, Ethyenny F. M.;Almeida, Daniela R. de;Menezes, Anderson R. B. de;Guerra, Valeschka M.;
Paidéia (Ribeir?o Preto) , 2004, DOI: 10.1590/S0103-863X2004000300012
Abstract: the great number of aggressive attitudes and discriminatory behavior reported toward homosexuals has been widely discussed. recent studies have shown that the prejudice has changed, becoming more subtle. however, the researches that try to emphasize this change in relation to the prejudice toward these minority groups are insufficient. therefore, this study aimed at adapting the explicit and implicit homophobia scale to the brazilian context. a sample of 231 university students participated in this research, ages varying from 17 to 55 years old (m = 24.0; sd = 5.38), mostly males (51.5%). they have answered the above-mentioned scale as well as socio-demographic questions. the results of the confirmatory factor analysis corroborated the bi-factorial structure of the instrument. the measure has also presented a satisfactory internal consistency (cronbach's alpha = .87).
Hygrothermal effects on the tensile strength of carbon/epoxy laminates with molded edges
Candido, Geraldo Maurício;Rezende, Mirabel Cerqueira;Almeida, Sérgio Frascino Müller de;
Materials Research , 2000, DOI: 10.1590/S1516-14392000000200003
Abstract: the interlaminar stresses are confined to a region near the free edge. therefore, the laminate stacking sequence and the free edge finishing are some of the factors that affect the strength of the laminate and limit its life. the use of molded edges eliminates the need for trimming and machining the laminates edges thus improving productivity. however, this fabrication technique may have a detrimental effect on the laminate strength for certain stacking sequences. this effect in the presence of moisture has not been characterized. this work presents the results of a comparative study of the resistance to delamination of laminates with machined edges and molded edges. additionally, two environmental conditions were considered: dry laminates and laminates saturated with moisture. the tensile strength of the laminates were measured and micrographs were used to analyze the microstructure of the laminates near the free edges. it is concluded that the mechanical properties of advanced composites depend on the environmental conditions and the fabrication techniques used to produce the laminates. therefore, it is necessary to account for these factors when experimentally determining the design allowables.
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