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Search Results: 1 - 10 of 124261 matches for " Luiz Waldemar; dos Santos Ferreira da Silva "
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Propriedades funcionais da farinha e concentrado protéico de feij?o guandu (Cajanus cajan (I.) Millsp)
Mizubuti,Ivone Yurika; Biondo Júnior,Oswaldo; de Oliveira Souza,Luiz Waldemar; dos Santos Ferreira da Silva,Rui Sérgio; Iouko Ida,Elza;
Archivos Latinoamericanos de Nutrición , 2000,
Abstract: functional properties of pigeon pea (cajanus rajan (l) millsp) flour and protein concentrate. the objective of this investigation was to study the functional properties of pigeon pea (cajanus cajan (l.) millsp) flour and protein concentrate. the solubility of both samples were superior than 70% at ph above 6.7 and below 3.5. the water and oil absorption were 1.2 and 1.07 ml/g of sample and 0.87 and 1.73ml/g of flour and protein concentrate samples, respectively. the minimum concentration of flour and protein concentrate needed for gelation was 20% and 12%, respectively. the emulsifying capacity of flour and concentrate was 129.35g and 191.66g oil/g of protein and the emulsion stability 87.50and 97.97%, respectively, after 780 minutes. the foam capacity and stability of flour foam were 36.0% and 18.61, while of the concentrate were 44.70% and 78.97% after 90 minutes. these properties indicate that the flour as well as the concentrate could have application in various food systems.
Occurrence of Antimicrobials in River Water Samples from Rural Region of the State of Rio de Janeiro, Brazil  [PDF]
Mychelle Alves Monteiro, Bernardete Ferraz Spisso, Julia Rodrigues Martins Pastor dos Santos, Rafaela Pinto da Costa, Rosana Gomes Ferreira, Mararlene Ulberg Pereira, Talita da Silva Miranda, Bárbara Rodrigues Geraldino de Andrade, Luiz Antonio d’Avila
Journal of Environmental Protection (JEP) , 2016, DOI: 10.4236/jep.2016.72020
Abstract: The occurrence of antimicrobials in the aquatic environment and drinking water has raised the question of their impact on the environment and public health. Animal production is one of the most expressive activities of Brazilian agribusiness. In order to ensure the productivity and competitiveness of the sector, the use of drugs for therapeutic and prophylactic purposes is a common practice. Due to the continuous release of antimicrobials into the environment, the aim of this study was to compare the frequency of detection of tetracyclines and sulfonamides in surface water collected from rural areas in Lidice District of Rio Claro, in the State of Rio de Janeiro, Brazil. An investigative study was conducted with 24 river water samples analyzed by high-performance liquid chromatography coupled to tandem mass spectrometry and the aim of this study was to determine residues of sulfonamides and tetracyclines based on the USEPA method 1694. The results indicated the presence of sulfamethoxazole and oxytetracycline concentrations at the ng·L-1 level. The applied method showed overall good performance with recoveries above 57%, method detection limits ≤ 7.17 ng·L-1, method quantification limits ≤ 23.90 ng·L-1 and good linearity.
Effects of supplementation of sunflower cake for lactating cows: productive performance and economic analysis Efeitos da suplementa o de torta de girassol para vacas lactantes: desempenho produtivo e análise econ mica
Angelita Xavier dos Santos,Leandro das Dores Ferreira da Silva,José Antonio Cogo Lan?anova,Edson Luiz Azambuja Ribeiro
Semina : Ciências Agrárias , 2012,
Abstract: This study aimed to evaluate the performance and estimate the viability of milk production for grazing cows supplemented with concentrate rations containing increasing levels of sunflower cake (0, 24, 48 and 72% DM). In this study were used 20 multiparous and primiparous cows after peak lactation distributed 4x4 Latin Square type. The data corrected milk yield to 3.5% fat showed no difference (P> 0.05) among treatments. Milk production presented linear effect; there was increased production for animals fed rations containing concentrated levels of 24% of sunflower cake and lower production with 72%. The fat content had a quadratic effect, the treatment containing 72% sunflower cake had minimum point; however, the latter had increase in fat presenting result of 3.98% compared to the control, 3.63%. The estimate of the economic viability per liter of milk did not differ (P> 0.05) among treatments, indicating that sunflower cake is a good alternative to lactating cows without causing additional economic burden. In this sense, it is found that the sunflower cake can be employed in supplementing lactating cows until the level of 72% Este trabalho teve como objetivo avaliar o desempenho e estimar a viabilidade da produ o leiteira para vacas em pastejo, suplementadas com ra es concentradas contendo teores crescentes de torta de girassol (0; 24; 48 e 72% na MS). Neste estudo foram utilizadas 20 vacas multíparas e primíparas após o pico de lacta o distribuídas em quadrado latino tipo 4x4. Os dados da produ o leiteira corrigida para 3,5% de gordura demonstraram n o haver diferen a entre os tratamentos. A produ o de leite apresentou efeito linear, verificou-se maior produ o para os animais alimentados com ra es contendo teores de 24% de torta de girassol e menor produ o com 72%. Houve efeito quadrático para o teor de gordura, o tratamento contendo 72% de torta de girassol apresentou ponto de mínimo; entretanto, este último obteve acréscimo no teor de gordura apresentando resultado de 3,98%, em compara o ao controle 3,63%. A estimativa da viabilidade econ mica por litro de leite n o apresentou diferen a (P>0,05), entre os tratamentos, indicando que a torta de girassol é uma boa alternativa à suplementa o de vacas lactantes sem acarretar nus econ mico. Neste sentido, verifica-se que a torta de girassol pode ser empregada na suplementa o de vacas lactantes até o nível de 72%.
Avalia o bromatológica de espécies arbóreas e arbustivas de pastagens em três municípios do Estado de Pernambuco = Chemical composition of tree and bush species occurring in pastures of three locations in Pernambuco State
Anália Carmem Silva de Almeida,Rinaldo Luiz Caraciolo Ferreira,Mércia Virgínia Ferreira dos Santos,José Ant?nio Aleixo da Silva
Acta Scientiarum : Animal Sciences , 2006,
Abstract: A pesquisa foi realizada nos Campos Experimentais de Itambé, Caruaru e Serra Talhada, pertencentes à Empresa Pernambucana de Pesquisa Agropecuária, e objetivou avaliar características bromatológicas de espécies arbóreas e arbustivas de pastagens. Para análises bromatológicas foram coletadas, nas épocas seca e chuvosa, amostras compostas de folhas e galhos com até 5,0 cm de diametro de espécies arbóreas e arbustivas presentes em áreas de pastagens. Os teores médios de MS das plantas foram de 38,89%, 48,27% e 55,20% nos Municípios de Itambé, Caruaru e Serra Talhada, respectivamente. Para PB, observou-se valores de 15,87%, 14,09% e 10,19%, respectivamente. Os valores de FDN e de FDA foram de 52,37% e 37,63%, 46,33% e 30,33%, 50,25% e 35,07%, respectivamente. As espécies, independente do local, apresentaram melhor composi o bromatológica no período chuvoso.Para utiliza o de espécies em sistemas silvipastoris, além da avalia o de características qualitativas, devem-se considerar aspectos de facilidade de propaga o, adapta o às condi es edafoclimáticas, tipo de animal e objetivo do sistema de produ o animal. The research was conducted at the Experimental Fields of Itambé, Caruaru and Serra Talhada, owned by the Agricultural Research Companyof Pernambuco (IPA). The aim was to analyze the chemical characteristics of tree and bush species grown on pasture land. In each Experimental Station, data was collected from a random sampling, during the dry and rainy seasons. Samples consisted of leaves and branches up to 5.0 cm of diameter. The average MS concentrations were 38.89, 48.27 and 55.20%. As for PB, the values observed were 15.87, 14.09 and 10.19%. The NFD and ADF concentrations were 52.37 and 37.63, 46.33 and 30.33, 50.25 and 35.07%, for Itambé, Caruaru and Serra Talhada, respectively. The studied species, independent of the region, presented better chemistry composition during the rainy season. Thus, for an adequate selection of species in silvopastoral systems, besides the evaluation of qualitative characteristics, other aspects should also be taken into consideration such as propagation,adaptation to the soil and climate conditions, animal type and objective of the animal system production.
Variabilidade e herdabilidade de caracteres morfológicos em clones de capim-elefante na Zona da Mata de Pernambuco
Silva, Ant?nio Luiz Cordeiro da;Santos, Mércia Virginia Ferreira dos;Dubeux Júnior, José Carlos Batista;Lira, Mario de Andrade;Ferreira, Rinaldo Luiz Caraciolo;Freitas, Erinaldo Viana de;Cunha, Márcio Vieira da;Silva, Maria da Concei??o;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010001000005
Abstract: this research was carried out at to evaluate the variability and heritability of morphologic traits in 54 elephant grass clones (three local controls and 51 from the renace/cnpgl) in the forest zone in pernambuco. it was used a complete randomized block design with additional controls. three cuts were performed on the 60th day of regrowth. there were significant differences for stem diameter, basal and aerial tillers density, width of leaf 3, length of leaf 5, leaf blade percentage, stem percentage, and leaf/stem ratio. clones of renace are similar to the ones traditionally cultivated in the conditions of forest zone in pernambuco regarded to morphological characters. cultivar pioneiro showed early flourishing in the environmental conditions of this study. number of basal and aerial/metter tillers showed good heritability, evidencing little influence of the environment on variability among the clones. considering the variability among renace clones for basal and aerial tillers/m and leaf/stem ratio and the high heritability of these characters, it is possible to obtain genetic gains for these traits in the elephant grass breeding program in the forest zone in pernambuco.
Uso de descritores morfológicos e herdabilidade de caracteres em clones de capim-elefante de porte baixo
Silva, Sharlyton Harysson Barbosa da;Santos, Mércia Virginia Ferreira dos;Lira, Mario de Andrade;Dubeux Junior, José Carlos Batista;Freitas, Erinaldo Viana de;Ferreira, Rinaldo Luiz Caraciolo;
Revista Brasileira de Zootecnia , 2009, DOI: 10.1590/S1516-35982009000800008
Abstract: the experiment was carried out with the objectives to evaluate the use of morphologic descriptor in the characterization and selection of dwarf elephant grass genotypes, and to evaluate the heritability of the evaluated traits. nine dwarf elephant grass clones were used (taiwan a.146 - 2.14, taiwan a.146 - 2.27, taiwan a.146 - 2.37, taiwan a.146 - 2.114, merker méxico - 6.2, merker méxico - 6.5, merker méxico - 6.31, cv. mott, and cnpgl92f198.7) was allotted to a randomized complete block design was used with three replications. the morphologic descriptors were applied every 60 days after the staging cut. a total of five cuts were performed at 60-day intervals using a height of 10 cm from ground level. among the evaluated dwarf elephant grass clones the tallest ones were more desirable, and this trait should be considered at the moment of selection. heritability estimate was high for all evaluated traits of dwarf elephant grass, varying from 66% for sheath wax to 100% for mid-rib color. the taiwan a.146 - 2.37 clone was similar to the mott cultivar. heritability values showed genetic variability among clones, detected at 60 days regrowth. some of the used morphologic descriptors allowed characterization of the evaluated genotypes. the clones taiwan a. 146-2.27, taiwan a. 146-2.37, taiwan a. 146-2.114, and merker méxico 6.31 were the tallest and showed greater total tillering intensity, and were more desirable, presenting greater potential for use under cutting.
Utiliza??o de técnicas multivariadas na avalia??o da divergência genética entre clones de palma forrageira (Opuntia ficus-indica Mill.)
Ferreira, Carlos Adonai;Ferreira, Rinaldo Luiz Caraciolo;Santos, Djalma Cordeiro dos;Santos, Mércia Virginia Ferreira dos;Silva, José Ant?nio Aleixo da;Lira, Mário de Andrade;Molica, Silmar Gonzaga;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000700004
Abstract: through multivariate techniques the phenetic divergence among clones of cactus forage was evaluated, in an experiment installed at experimental station of the empresa pernambucana de pesquisa agropecuária - ipa, caruaru - pe. the experimental design was a complete block design, with three blocks. the treatments were 19 clones of cactus forage of the bank of germoplasma of ipa. it was measured: a) measures in cladodios, according to the order: length, width, thickness, number and weight of the green matter; b) measures by plant: thorn presence, number of cladodios for order and total, total height, infestation for cochineal and weight of the green matter. it was applied the univariate analyses of variance (anova) and multivariate (manova), the canonical variables (cv) and cluster analysis (ca). in anova difference were verified among the averages of clones. differences among vectors of averages of clones were detected by means of manova. it was possible to reduce the original dimensionality for two dimensions, that explained of 85.03% of the total variation, by applicating vc. the infestation percentage by cochineal was considered a characteristics susceptible to discard. in ca was discriminated nine group. in the studied conditions, the characteristic infestation percentage for cochineal should not be included in the study of the genetic diversity; the characteristics of larger discrimination were thickness average for cladodio primary, secondary and tertiary, number of primary cladodio and medium weights of green matter for secondary and tertiary cladodio, in a program of crossing of cactus forage, it must be considered the group of clones and the clone performance as characteristics with higher agronomic relevance and animal science.
Topical Effect of a Medically Prescribed Pediatric Antibiotic on Dental Biofilm: A Cross-Over, In Situ Study
Viviane Santos da Silva Pierro, Dennis de Carvalho Ferreira, Hugo Emiliano de Jesus, Alexandre Soares Rosado, Ronir Raggio Luiz, Kátia Regina Netto dos Santos, Lucianne Cople Maia
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0055558
Abstract: Objective This study aimed to investigate the possible topical effect of a broad-spectrum antibiotic on dental biofilm formed in situ in the absence or presence of sucrose. Methods A crossover study was conducted in three phases of 14 days each, during which 11 volunteers wore palatal devices containing 6 enamel blocks covered with meshes to allow biofilm formation. Dental blocks were extraorally submitted to a 20% sucrose solution at three different frequencies of exposure (0, 3 and 8 times/day), and to a suspension of amoxicillin/clavulanate potassium (A/CP) or a placebo (P) suspension at an 8-hour time interval application regimen. On the 14th day of each phase, biofilms were collected for microbiological (conventional culture) and molecular (Denaturing Gradient Gel Electrophoresis – DGGE) analyses. Results In the absence of sucrose exposure (SE) and at the 3-time daily frequency, dental biofilms treated with A/CP showed lower total biofilm weight and lower counts of total microbiota than the ones treated with P (p>0.05). A/CP presented higher counts of Candida spp. when compared with P in the presence of SE, especially at the 8-time daily frequency (p<0.05). Considering the DGGE analysis, the mean number of bands was higher for P (p>0.05), regardless of SE. However, DGGE profiles demonstrated large interindividual variability. Conclusion Both conventional culture and DGGE have demonstrated some differences on total microbiota of dental biofilms when exposed to the A/CP or P suspensions, mainly in the absence of sucrose, which suggests a possible topical effect of the sugar-free A/CP suspension on dental biofilm.
Multicomponent diffusion during Prato cheese ripening: mathematical modeling using the finite element method
Bona, Evandro;Silva, Rui Sergio dos Santos Ferreira da;Borsato, Dionísio;Silva, Luiz Henry Monken e;Fidelis, Dayanne Aline de Souza;
Ciência e Tecnologia de Alimentos , 2010, DOI: 10.1590/S0101-20612010000400018
Abstract: the partial replacement of nacl by kcl is a promising alternative to produce a cheese with lower sodium content since kcl does not change the final quality of the cheese product. in order to assure proper salt proportions, mathematical models are employed to control the product process and simulate the multicomponent diffusion during the reduced salt cheese ripening period. the generalized fick's second law is widely accepted as the primary mass transfer model within solid foods. the finite element method (fem) was used to solve the system of differential equations formed. therefore, a nacl and kcl multicomponent diffusion was simulated using a 20% (w/w) static brine with 70% nacl and 30% kcl during prato cheese (a brazilian semi-hard cheese) salting and ripening. the theoretical results were compared with experimental data, and indicated that the deviation was 4.43% for nacl and 4.72% for kcl validating the proposed model for the production of good quality, reduced-sodium cheeses.
Espectrometria de raios gama de granitos pegmatíticos da Província Pegmatítica da Borborema (PPB), nordeste do Brasil
Silva, Sebasti?o Milton Pinheiro da;Crósta, Alvaro Penteado;Ferreira, Francisco José Fonseca;Beurlen, Hartmut;Silva, Adalene Moreira;Santos, Luiz Fernando dos;
Revista Brasileira de Geofísica , 2010, DOI: 10.1590/S0102-261X2010000400011
Abstract: the objective of this study is the characterization of pegmatitic granites located in the southern region of the borborema pegmatitic province (bpp) with aerial and ground gamma ray data. ground gamma ray data, radiometric and icp-ms laboratory analysis showed that these granites have uranium concentrations varying between 0.4 ppm and 7.8 ppm, thorium concentrations varying between 0.1 ppm and 21 ppm and potassium concentrations varying between 2% and 5.2%. based on these radiometric characteristics and using individual, ratios and ternary images of radioelements of aerial gamma ray data it was possible to distinguish from others country rocks a group of granitic pegmatitic bodies and also to individualize quartzitic formations from the northern and southern portions of the area, based on their different thorium (th) contents. ground gamma ray data, acquired for one of these pegmatitic granites, called galo branco granite, reveals an irregular spatial distribution of radioelements, indicating mineralogical changes in contents and concentrations of accessory minerals during magmatic crystalization. pegmatites intruding quartzites in the south portion of the granite were also distinguished using eu/eth and eu/k ratios images. the results indicated the potential of these methods for the characterization and mapping of pegmatitic granites and associated pegmatites of the borborema pegmatitic province (bpp).
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