OALib Journal期刊

ISSN: 2333-9721




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匹配條件: “Ricardo Augusto de Oliveira” ,找到相關結果約201071條。
Stability of Soybean Genotypes and Their Classification into Relative Maturity Groups in Brazil  [PDF]
José Elzevir Cavassim, Jo?o Carlos Bespalhok Filho, Luis Fernando Alliprandini, Ricardo Augusto de Oliveira, Edelclaiton Daros, Edson Perez Guerra
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.411258

The stability of soybean genotypes is very important in breeding programs for not only the evaluation, selection, and production of cultivars but also the establishment of parameters required for the classification of genotypes into relative maturity groups (RMG). The aim of this study was to define stable genotypes for traits, such as days to flowering, days to maturity, and length of the reproductive period, and to classify them into RMG. For this purpose, 20 commercial soybean cultivars were evaluated in 12 environments distributed in the major producing regions of Brazil. Assessments according to the Eberhart and Russell method and the additive main effects and multiplicative interaction (AMMI) method were effective in the identification of stable genotypes and their classification into RMG. These methods can also be used collectively for this purpose. Our results showed that the AMMI method led to a better interpretation of genotype-environment interactions. Thus, RMG obtained on the basis of stable genotypes represented a good estimate of the relative maturity of soybean crops throughout Brazil.

Prevalence of Low Levels of Vitamin D in Type 2 Diabetes at the City of Mangueirinha, Paraná, Southern Brazil  [PDF]
Paulo Sérgio Chiamolera, Cristiano Alvariza Amaral, Monica Cristina de Oliveira Russo, Gilberto de Oliveira Netto, Ricardo Augusto Fernandes, Ricardo Teles de Andrade, José Luiz Gon?alves Buscariolli, Denise Rosso Tenório Wanderley Rocha, Alberto Krayyem Arbex
Open Journal of Endocrine and Metabolic Diseases (OJEMD) , 2016, DOI: 10.4236/ojemd.2016.61002
Abstract: Background: Diabetes mellitus is a worldwide epidemic. In 2002 there were 173 million diabetic adults worldwide, and these numbers are expected to reach up to 300 million people by 2030. Meanwhile, vitamin D deficiency has its worldwide prevalence directly influenced by factors as solar radiation, skin color, latitude and seasons, cultural habits of populations such as clothing and food, and these factors are important to explain the different prevalences of vitamin D deficiency in the world. Methods: A prospective cross-sectional cohort study was conducted with patients in the outpatient clinic of the Health Unit of the city of Mangueirinha, Paraná, Southern Brazil. Fifty-four type 2 diabetic patients were evaluated (38 women and 16 men), aged 55.8 ± 12.6 years. The following variables were evaluated: age, ethnicity, presence of type 2 diabetes (DM2), hypertension, dyslipidemia, weight, BMI, WC, blood pressure, blood glucose, glycated hemoglobin, ionized calcium, PTH, 25-OH Vit, total cholesterol, HDL, LDL, urea, creatinine, uric acid and red cell/hematocrit. Results: mean BMI was 30.2 ± 4.4 kg/m2, indicating class 1 obesity in this population. Fasting glucose levels were approximately 169.8 ± 74.5 mg/dL. The 25-OH vitamin D values for this population were 23.4 ± 8.3 ng/mL, and 13% of them showed 25-OH vitamin D levels above 30 mg/dL. Fifty percent of those patients had vitamin D levels lower than 30 mg/dL, and 37% had less than 20 mg/dL. Conclusions: this study suggests that vitamin D is associated with low levels of vitamin D in type 2 diabetic patients. Supplementation of vitamin D should be considered in diabetic patients, when levels under 30 mg/mL are found.
Yield potencial of Trachypogon plumosus pastures in the Roraima’s savannas. = Rendimento potencial de pastagens de Trachypogon plumosus nos cerrados de Roraima.
Newton de Lucena Costa,Anibal de Moraes,Ricardo Augusto de Oliveira,Vicente Gianluppi
Agro@mbiente On-line , 2011,
Abstract: There are several methods to calculate the potential performance, however it′s necessary to correlate those more adjusted to real field conditions, in function of the diversity of biotics and abiotics factors that affect the growth and development of the plants and, consequently, in the forage yield potential performance. Among the methods evaluated for the estimate Trachypogon plumosus forage potential performance, during rainy season, the method proposed by Doorenbos and Kassam (1994) provided better adjusted to the field conditions, whereas the Sinclair (1993) method provided estimates of the grass growth potential, which can be obtained under extremely favorable environmental conditions and the utilization of better pasture management practices. The method of Loomis and Williams (1963) estimated a very high productivity, showing itself inadequate for simulate grass growth potential under real conditions. The acurate of the models in predict the potential performance was directly proportional to incorporates sensibility parameters that consider the prominent of abiotics and physiological phenomena involved in the biomass accumulation.
Caracteriza??o química e perfil aminoácidico da farinha de silagem de cabe?a de camar?o
Guilherme, Ricardo de Figueiredo;Cavalheiro, José Marcelino Oliveira;Souza, Petr?nio Augusto Sim?o de;
Ciência e Agrotecnologia , 2007, DOI: 10.1590/S1413-70542007000300028
Abstract: the growing development of the fishery forced the researchers they to look for the best form of use of the rations, because these, they can elevate the cost of production from 50 to 80%. in the diets for fish and shrimps, the protein of animal origin more commonly used it is together the bone flour and meat with the fish flour. due to shortage and the high price of such sources proteins and seeking the flour if silage of shrimp head as an alternative in potential, that research had as objectives the elaboration, chemical characterization and the profile of the amino acids of the flour of silage of shrimp head, seeking to assist the demands nutritionals of amino acids in the feeding of fish. the experiment was driven in the laboratory of development of fishing products - ldfp - of the department of technology and chemistry of foods, ufpb. the flour of silage of shrimp head was elaborated and accomplished the chemical analysis (centesimal composition) and dosage of calcium and match, accomplished in triplicate. the analysis of the composition of amino acids of the silage of shrimp head was accomplished in a high-performance liquid chromatography. the flour of silage of shrimp head was shown as an excellent source proteins (39,5%) and lipids (12,5%) besides having considerable amount of calcium, therefore it can serve as eventual substitute in the formularization of diets for fish.
Precis?o experimental em ensaios com a cultura do feij?o
Oliveira, Renato Lunezzo de;Muniz, Joel Augusto;Andrade, Messias José Bastos de;Reis, Ricardo Luis dos;
Ciência e Agrotecnologia , 2009, DOI: 10.1590/S1413-70542009000100016
Abstract: the evaluation of the coefficient of variation (cv) as a precision measure of experiments has been carried out with several crops, animal species and forages through researches proposing classifying limits of the values, considering the mean, the standard deviation and the distribution of the cv values of various study variables involved in the experiments. the objective of this research was to study the distribution of the cv values of experiments with the bean crop, proposing limits that can guide the researchers in the evaluation of their studies with each variable. the data used were obtained from a review of scientific articles related to the bean crop. several variables were considered: plant productivity, number of pods, number of grains per pod, weight of one-hundred grain sample, final stand, plant height, and harvest efficiency. based on the normal distribution, limits of values of cv were obtained, also using the distribution of sample quantiles and the median and pseudosigma, classifying them as low, medium, high and very high. the statistical calculus was implemented using one of the functions of the free software r to verify the normality of the data. results indicated that de cv values were different among all variables presenting huge variation, justifying the use of specific levels for each variable.
Evaluation of sugarcane genotypes and production environments in Paraná by GGE biplot and AMMI analysis
Pedro Henrique Costa de Mattos,Ricardo Augusto de Oliveira,Jo?o Carlos Bespalhok Filho,Edelclaiton Daros
Crop Breeding and Applied Biotechnology , 2013,
Abstract: The purpose of this study was to evaluate sugarcane genotypes for the trait tons of sugar per hectare (TSH), stratifying five production environments in the state of Paraná. The performance of 20 genotypes and 2 standard cultivars was analyzed in three consecutive growing seasons by the statistical methods AMMI and GGE Biplot. The GGE Biplot grouped the locations into two megaenvironments and indicated the best-performing genotypes for each one, facilitating the selection of superior genotypes. Another advantage of GGEBiplot is the definition of an ideal genotype (G) and environment (E), serving as reference for the evaluation of genotypes and choice of environments with greater GE interaction. Both models indicated RB006970, RB855156 and RB855453 as the genotypes with highest TSH and S o Pedro do Ivai as the environment with the greatest GE interaction. Both approaches explained a high percentage of the sum of squares, with a slight advantage of AMMI over GGE Biplot analysis.
Compara o entre centrifuga o e microfiltra o na clarifica o do suco tropical de maracujá = Comparison between centrifugation and microfiltration on the clarification of passion fruit juice
Ricardo Cardoso de Oliveira,Sueli Teresa Davantel de Barros,Marcelino Luiz Gimenes,Francisco Augusto Foggiato Alvim
Acta Scientiarum : Technology , 2010,
Abstract: No sentido de desenvolver uma alternativa ao processo convencional decentrifugacao realizou-se neste trabalho um estudo da microfiltracao para clarificar o suco tropical de maracuja. A influencia da pressao transmembrana e do pre-tratamento enzimatico do suco, foram estudadas no processo de clarificacao por microfiltracao. Os ensaios de clarificacao por microfiltracao do suco tropical de maracuja foram realizados numa unidade de microfiltracao construida em aco inox. As membranas ceramicas usadas apresentam diametro medio de corte de 0,3 e 0,8 êm. Os niveis de pressao transmembrana foram de 1,0 e 3,0 bar num processo isotermico a 35oC. Os niveis de concentracao de enzima Cytrozym Ultra L utilizados no pre-tratamento do suco foram de 100 e 200 ppm. A condicao de microfiltracao que resultou num suco de boa qualidade foi com a membrana de 0,3 êm operada a 1,0 bar com suco pre-tratado com 100 ppm de enzima. Nesta condicao, obteve-se fluxo de permeado igual 56 kg h-1 m-2 e obtendo-se 100% na reducao de solidosem suspensao e 97% na reducao da turbidez. Comparativamente o processo de centrifugacao com o mesmo suco apresentou resultados praticamente equivalentes, mas com uma reducao de solidos suspensos inferior a de 100% observada para a microfiltracao, sendo a obtencao de um suco isento de particulas suspensas, um dos principais objetivosdeste trabalho. Aiming at n alternative to the conventional centrifuge process of clarification, this work presents a study of the microfiltration processes to clarify the tropical juice of passion fruit. The influence of transmembrane pressure and the enzyme pre-treatment of the juice were studied in the process of clarification by microfiltration. Tests of microfiltration for clarification of tropical juice of passion fruit were performed in a microfiltration unit built in stainless steel. The ceramic membranes used have diameter cut-off 0.3 and 0.8 êm. The levels of transmembrane pressureinvestigated were 1.0 and 3.0 bar in an isothermal process at 35oC. The concentrations of Cytrozym Ultra L enzymes used in the pre-treatment of the juice were 100 and 200 ppm. The condition that resulted into a better quality of micro filtered juice was with membrane of 0.3 êm at 1.0 bar operated with juice pre-treated with 100 ppm of enzyme. In this condition, a permeate flow equal to 56 kg h-1 m-2 was obtained and resulting in 100% reduction of solid matter and 97% reduction in turbidity. The process of centrifugation with the same juice showed equivalent results, but the reduction of suspended solids was lower than the observed for
Estudo comparativo entre a eficácia da trabeculectomia com e sem uso de 5-Fluorouracil ou Mitomicina-C: comparative study with and without 5-Fluorouracil or Mitomycin-C
Mello e Oliveira, Nilson de;Porto, Ricardo B.;Freitas, Telma Gondim;Lacava, Augusto Cezar;
Arquivos Brasileiros de Oftalmologia , 1999, DOI: 10.1590/S0004-27491999000600016
Abstract: purpose: to evaluate the success in reducing intraocular pressure (iop) using trabeculectomy without antifibro-blastic drugs and trabeculectomy with adjunct 5-fluorou-racil or mitomycin-c as well as to assess if the time of mito-mycin-c exposure modifies this success rate. methods: 171 consecutive eyes operated between january 1989 and march 1998 were retrospectively analyzed, 16 eyes having been submitted to simple trabeculectomy, 38 eyes to trabeculectomy and postoperative application of 5-fluorouracil and 117 eyes to trabeculectomy and intra-operative application of mitomycin-c. results: there was a significant reduction in iop with the use of antifibroblastic drugs (p<0.05). exposure time to mitomycin-c did not present a statistically significant difference (p>0.05). conclusions: trabeculectomy associated with antifibro-blastic drugs significantly reduces iop and promotes short-term stability.
Stability and adaptability of early maturing sugarcane clones by AMMI analysis
Edson Perez Guerra,Ricardo Augusto de Oliveira,Edelclaiton Daros,José Luís Camargo Zambon
Crop Breeding and Applied Biotechnology , 2009,
Abstract: Stability and adaptability of 14 early maturing sugarcane clones were evaluated at 11 locations in the State ofParaná, in the plant cane and ratoon cycles, by the AMMI method. By AMMI2, 59.44% cumulative variance was explained inplant cane and 54.22% in ratoon cane by the first two principal components of tons of pol per hectare (TPH). For genotypeRB966928 the TPH was medium to high, phenotypic stability high and adaptability general, recommending this early maturingclone with wide adaptability for northern Paraná. The genotype-environment interaction was lowest in Paranavaí andMandagua ú (most stable locations), where the ranking of genotypes was more reliable than the means of the environmentstested.
Genetic divergence and parent selection of sugarcane clones
Valéria Rosa Lopes,Jo?o Carlos Bespalhok Filho,Ricardo Augusto de Oliveira,Edson Perez Guerra
Crop Breeding and Applied Biotechnology , 2008,
Abstract: The objective of this study was to estimate the genetic divergence of 140 sugarcane clones of the series RB97,in phase T3 of the Sugarcane Genetic Improvement Program of the Universidade Federal do Paraná, at three locations bymultivariate analysis, using the linear mixed model and grouping analysis by the Tocher procedure, based on Mahalanobis′generalized distance. The evaluated traits were number of stalks per plot, mass of ten stalks, Brix and Brix per plot in kg. Thenumber of groups varied according to the evaluated environment. Based on the results, combinations of one of the mostdivergent clones RB975008, RB975112, RB975019 RB975153 and RB975067 with any one of the most productive clonesRB975269, RB977533, RB975102, RB975317 and RB975038 are recommended.

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