Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 58
Primeira ... 123 ... Última
Imagem não selecionada

Imprime registro no formato completo
Estudo do arranjo espacial de plantas da cultura do arroz de terras altas em Mato Grosso do Sul. Repositório Alice
BAZONI, R.; FERNANDES, A. T. F.; COSTA, C. A.; GUIMARÃES, E. P.; CARVALHO, J. R. P. de; SANTOS, A. B. dos..
Na década de 70, com advento do programa de financiamentos agropecuários "Polocentro", a cultura de arroz de terras altas tomou grande impulso, especialmente no cerrado do Brasil Central, quando essa região tornou-se responsável pela maior área de cultivo nesse sistema.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Arroz; Oryza sativa; Delineamento experimental; Estatistica experimental; Densidade e espaçamento de arroz; Experimental design; Experimental statistics; Rice density and spacing.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/206422
Imagem não selecionada

Imprime registro no formato completo
Optimization of technological parameters to produce breakfast cereal from rice and common bean flour by extrusion. Repositório Alice
CARVALHO, A. V.; RIOS, A. de O.; BASSINELLO, P. Z..
The objective of the present work was to investigate the relevant parameters to elaborate breakfast cereal from a mix of rice and common bean flour and to evaluate the influence of formulations and processing conditions on the final product characteristics. To elaborate the breakfast cereal it was applied a complete experimental design 23, testing the following parameters: common bean flour percentage, moisture and processing temperature, and having the protein content, apparent density and expansion index as statistical answers. Different formulations were processed in a single-screw extrusion. Based on statistical analyses results, for the protein variable, the factors common bean flour percentage, moisture, temperature and the interaction between...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Arroz; Feijão; Farinha; Extrusão; Thermoplastics; Experimental design; Breakfast cereals; Extrusion.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/894535
Imagem não selecionada

Imprime registro no formato completo
Coeficiente de heterogeneidade do solo e tamanho de parcela. Repositório Alice
ALVES, S.M. de F.; SERAPHIN, J.C..
O objetivo deste trabalho foi apresentar alternativas para estimar o coeficiente de heterogeneidade do solo a partir do coeficiente de correlação intraclasse em diferentes estruturas de delineamentos experimentais. As estimativas dos coeficientes de heterogeneidade do solo obtidas por este método foram comparadas àquelas obtidas por meio de mínimos quadrados generalizados. Não houve diferenças entre as estimativas obtidas por ambos os métodos; nesse caso recomenda-se a estimativa com base no coeficiente de correlação intraclasse por ser mais simples e prática. Considerando-se o coeficiente de heterogeneidade do solo, obteve-se diversos tamanhos de parcela, para diferentes combinações de coeficiente de variação, número de repetições, grau de diferença que...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coeficiente de correlação intraclasse; Precisão experimental; Delineamento experimental; Coeficiente de variação; Intraclass correlation coefficient; Experimental precision; Experimental design; Variation coefficient.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/110071
Imagem não selecionada

Imprime registro no formato completo
Two-stage inference in experimental design using DEA: an application to intercropping and evidence from randomization theory. Repositório Alice
GOMES, E. G.; SOUZA, G. da S. e; VIVALDI, L. J..
In this article we propose the use of Data Envelopment Analysis (DEA) measures of efficiency, under constant returns to scale and input equal to unity, in the analysis of multidimensional nonnegative responses in the design of experiments. The approach agrees with the standard Analysis of Variance (Covariance) for univariate responses and simplifies the statistical analysis in the multivariate case. The best treatments provided by the analysis optimize a combined output defined by shadow prices, which are the solutions of the DEA problem. The approach is particularly useful for the analysis of intercropping (crop mixtures) experiments. In this context we discuss two examples. To properly address the issue of correlation and non-normality of DEA...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ensaio experimental; Consórcio; Análise envoltória de dados.; Experimental design; Intercropping; Data envelopment analysis.
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/handle/doc/657613
Imagem não selecionada

Imprime registro no formato completo
Analise de experimentos em latice quadrado com enfase em componentes de variancia. I. Analises individuais. Repositório Alice
SILVA, H.D.; REGAZZI, A.J.; CRUZ, C.D.; VIANA, J.M.S..
Este trabalho teve como objetivo avaliar as seguintes alternativas de anlise de experimentos em latice quadrado ("Square Lattice"), quanto a estimacao de componentes de variancia e alguns parametros geneticos: i) analise intrablocos com tratamentos ajustados, e blocos dentro de repeticoes nao-ajustados; ii) analise do latice como blocos casualizados completos; iii) analise intrablocos com tratamentos nao-ajustados e blocos dentro de repeticoes ajustados; iv) analise do latice como blocos casualizados completos, utilizando-se as medidas ajustadas dos tratamentos, obtidas a partir da analise com recuperacao da informacao interblocos, tendo como quadrado medio do residuo a variancia efetiva media desta mesma analise com recuperacao da informacao interblocos....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Delineamento experimentais; Parametros geneticos; Melhoramento de plantas; Experimental design; Genitic parameters; Plant breeding.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/101025
Imagem não selecionada

Imprime registro no formato completo
Factors affecting the performance of Pantaneiro horses. Repositório Alice
SOUZA, G. da S. e; GOMES, E. G.; SANTOS, S. A.; REZENDE, A. S. C. de; ANDRADE, D. R. de F.; NOGUEIRA, M. F.; TRIGO, P.; ABREU, U. G. P. de.
This study aimed to assess the physical performance of Pantaneiro horses with and without equine infectious anemia (EIA) under functional conditions of cattle management. The horses were subjected to a performance test and split into two groups according to a completely randomized design: animals were chosen from populations testing positive and negative for EIA. Performance was measured as a function of a data envelopment analysis (DEA) model considering four outputs and one unitary input. The output measures were the distance achieved in the performance test, hematocrit as a weighted average over the test duration, respiratory rate as weighted average over the test duration, and the level of lactic acid at the test termination. Weights for the hematocrit...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Data envelopment analysis; Analysis of covariance; Anemia infecciosa eqüina; Delineamento experimental; Método estatístico; Equine infectious anemia; Experimental design; Multivariate analysis.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1090780
Imagem não selecionada

Imprime registro no formato completo
Experimental design and data analysis: methods for the response optimization and applications using R. Repositório Alice
OLIVEIRA, T. A.; LEAL, C.; LIMA, R..
2015
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Análise de dados; Experimental design.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1007520
Imagem não selecionada

Imprime registro no formato completo
Effect of ultrasound on the quality parameters of a banana, strawberry and juçara juice blend. Repositório Alice
RIBEIRO, L. O.; BRIGIDA, A. I. S.; MATTA, V. M. da; FREITAS, S. P..
In this study, the effect of ultrasound processing on the quality parameters of a banana, strawberry and juçara juice blend was evaluated. A central composite rotational design was performed in which the processing power (73.5 to 250 Watts) and time (7 to 36 minutes) were selected as independent variables. The blend was sonicated and then pH, acidity, soluble solids and anthocyanins were evaluated as experimental design responses. It was observed anthocyanins retention of at least 86% in the sonicated fruit juice blends and there was no significant variation in pH, titrable acidity and soluble solids content. Therefore, the ultrasound may become a potential technology for fruit juice blends stabilization.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Ultrasound; Experimental design; Physical-chemical characteristics.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1057303
Imagem não selecionada

Imprime registro no formato completo
Influence of wall material concentration and core-to-wall material ratio on the encapsulation of pomegranate seed oil by complex coacervation. Repositório Alice
COSTA, A. M. M.; TONON, R. V.; TORRES, A. G..
Pomegranate seed oil (PSO) is rich in bioactive compounds, such as conjugated linolenic acids (CLnA). Encapsulation is a packing technology that enables the application of highly oxidizable oils in food matrices. Technological properties of particles produced by this method are highly influenced by wall material (WM) concentration and core:WM ratio. The objective of this study was to evaluate the effects of the WM concentration and the core:WM ratio in the microencapsulation of PSO by complex coacervation.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Complex coacervation; Tecnologias emergentes; Pomegranate seed oil; Experimental design.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081963
Imagem não selecionada

Imprime registro no formato completo
Production of fructo-oligosaccharides by Aspergillus ibericus and their chemical characterization. Repositório Alice
NOBRE, C.; ALVES FILHO, E. G.; BRITO, E. S. de; RODRIGUES, S.; TEIXEIRA, J. A.; RODRIGUES, L. R..
bitstream/item/177371/1/ART18002.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Fructo-oligossacarídeos; Aspergillus ibericus; Estrutura química; Design experimental; Otimização do rendimento de produção; Fructo-oligosaccharides; Production yield optimization; Chemical structure; Experimental design.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1089442
Imagem não selecionada

Imprime registro no formato completo
Scaling the number of plants per plot and number of plots per genotype of yellow passion fruit plants - doi: 10.4025/actasciagron.v36i1.17697 Agronomy
Storck, Lindolfo; Departamento de Fitotecnia, Universidade Federal de Santa Maria, RS; Lúcio, Alessandro Dal’Col; Universidade Federal de Santa Maria; Krause, Willian; Universidade do Estado de Mato Grosso; Araújo, Dejânia Vieira de; Universidade do Estado de Mato Grosso; Silva, Celice Alexandre; Universidade do Estado de Mato Grosso.
There is a demand for research on yellow passion fruit plants (Passiflora edulis Sims) used for juice production. Thus, the present study aimed to determine the number of plants per experimental plot and the number of plots per genotype for different properties of passion fruit. The data used were obtained from an experiment (Tangará da Serra, Mato Grosso State, Brazil) that assessed 13 fruit properties in eight genotypes of yellow passion fruit plants, with 10 replicates and 10 plants per plot. For each of the 80 experimental plots, the optimum plot size (Xo) was estimated by the method of maximum curvature of the coefficient of variation model. The number of replicates for each genotype and the means were estimated through the use of 10 plants per plot,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.01.03.05-9 - melhoramento vegetal Passiflora edulis Sims; Yellow passion fruit; Experimental design; Accuracy Planejamento de experimentos.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17697
Imagem não selecionada

Imprime registro no formato completo
Use of the correlation coefficient in agricultural sciences: problems, pitfalls and how to deal with them Anais da ABC (AABC)
Kozak,Marcin; Krzanowski,Wojtek; Tartanus,MaŁgorzata.
This paper discusses a number of aspects concerning the analysis, interpretation and reporting of correlations in agricultural sciences. Various problems that one might encounter with these aspects are identified, and suggestions of how to overcome these problems are proposed. Some of the examples presented show how mistaken and even misleading the interpretation of correlation can be when one ignores simple rules of analysis.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Experimental design; Linearity; Path analysis; Simpson's paradox; Statistical analysis.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400029
Imagem não selecionada

Imprime registro no formato completo
The 15N isotope to evaluate fertilizer nitrogen absorption efficiency by the coffee plant Anais da ABC (AABC)
Fenilli,Tatiele A.B.; Reichart,Klaus; Bacchi,Osny O.S.; Trivelin,Paulo C.O.; Dourado-Neto,Durval.
The use of the 15N label for agronomic research involving nitrogen (N) cycling and the fate of fertilizer-N is well established, however, in the case of long term experimentation with perennial crops like citrus, coffee and rubber tree, there are still shortcomings mainly due to large plant size, sampling procedures, detection levels and interferences on the system. This report tries to contribute methodologically to the design and development of 15N labeled fertilizer experiments, using as an example a coffee crop fertilized with 15N labeled ammonium sulfate, which was followed for two years. The N of the plant derived from the fertilizer was studied in the different parts of the coffee plant in order to evaluate its distribution within the plant and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Experimental design; Replicate variability; Stable isotope methodology; Perennial crop.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000400015
Imagem não selecionada

Imprime registro no formato completo
Variability, plot size and border effect in lettuce trials in protected environment Bragantia
Santos,Daniel; Lúcio,Alessandro Dal’Col; Cargnelutti Filho,Alberto; Lopes,Sidinei José; Olivoto,Tiago.
ABSTRACT The variability within rows of cultivation may reduce the accuracy of experiments conducted in a complete randomized block design if the rows are considered as blocks, however, little is known about this variability in protected environments. Thus, our aim was to study the variability of the fresh mass in lettuce shoot, growing in protected environment, and to verify the border effect and size of the experimental unit in minimizing the productive variability. Data from two uniformity trials carried out in a greenhouse in autumn and spring growing seasons were used. In the statistical analyses, it was considered the existence of parallel cultivation rows the lateral openings of the greenhouse and of columns perpendicular to these openings....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Experimental accuracy; Experimental design; Experimental error; Lactuca sativa L.; Greenhouse.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200230
Imagem não selecionada

Imprime registro no formato completo
Plot size and number of replications to evaluate the grain yield in oat cultivars Bragantia
Lavezo,André; Cargnelutti Filho,Alberto; Bem,Cláudia Marques de; Burin,Cláudia; Kleinpaul,Jéssica Andiara; Pezzini,Rafael Vieira.
ABSTRACT The objectives of this study were to determine the optimum plot size (Xo) and the number of replications to evaluate grain yield and verify the variability of Xo among oat cultivars. Thirtytwo uniformity trials of 3 × 3 m were performed, being 8 from each cultivar (URS Charrua, URS Taura, URS Estampa, and URS Corona). Each uniformity trial was divided in 36 basic experimental units (BEU) of 0.5 × 0.5 m. Grain yield was determined in each BEU. The Xo was determined by the method of maximum curvature of the coefficient of variation model. Mean comparisons among cultivars were performed by the Scott-Knott test via bootstrap. The number of replications was calculated by an iterative process until convergence for experiments in completely randomized...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avena sativa L.; Variability; Uniformity trial; Experimental design.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400512
Imagem não selecionada

Imprime registro no formato completo
Plot size and number of repetitions in vetch Bragantia
Cargnelutti Filho,Alberto; Alves,Bruna Mendonça; Follmann,Diego Nicolau; Bem,Cláudia Marques de; Schabarum,Denison Esequiel; Stefanelo,Lucas da Silva; Wartha,Cleiton Antonio; Kleinpaul,Jéssica Andiara; Chaves,Gabriela Görgen; Uliana,Daniela Barbieri; Pezzini,Rafael Vieira.
ABSTRACT The objectives of this work were to determine the optimum plot size and number of repetitions to evaluate the fresh matter weight of vetch (Vicia sativa L.) in sowing densities. Fortyeight uniformity trials of 6 m × 6 m were conducted. Sixteen trials were evaluated in each sowing density (40, 60, and 80 kg∙ha−1). Each trial was divided into 36 basic experimental units (BEU) of 1 m × 1 m, totaling 1,728 BEU. In each BEU, the fresh matter was weighed. The optimum plot size was determined by the method of maximum curvature of the coefficient of variation model. The means were compared among sowing densities by the Scott-Knott’s test. The number of repetitions — for experiments with completely randomized and randomized block designs, in scenarios of i...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vicia sativa L.; Uniformity trials; Experimental design; Cover crops; Experimental precision.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200178
Imagem não selecionada

Imprime registro no formato completo
Plot size related to numbers of treatments and replications, and experimental precision in dwarf pigeon pea Bragantia
Cargnelutti Filho,Alberto; Lavezo,André; Bem,Cláudia Marques de; Carini,Fernanda; Schabarum,Denison Esequiel; Bandeira,Cirineu Tolfo; Kleinpaul,Jéssica Andiara; Wartha,Cleiton Antonio; Silveira,Daniela Lixinski; Pezzini,Rafael Vieira; Thomasi,Rosana Marzari; Simões,Fernanda Martins; Neu,Ismael Mario Márcio.
ABSTRACT The aim of this study was to determine the optimum plot size to evaluate the fresh matter of aerial part of dwarf pigeon pea (Cajanus cajan (L.) Millsp), cultivar IAPAR 43 (Aratã), in scenarios formed by combinations of numbers of treatments, number of replications, and precision levels. The fresh matter of aerial part was weighed on basic experimental units of 1 m × 1 m in three uniformity trials with size of 24 m × 12 m (288 m2 in each trial). The soil heterogeneity index of Smith was estimated. Also, the optimum plot size was determined by Hatheway’s method in scenarios formed by combinations of i treatments (i = 5, 10, 15, and 20), r replications (r = 3, 4, 5, 6, 7 8, 9, and 10), and d precision levels (d = 5%, 10%, 15%, 20%, 25%, and 30%). In...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cajanus cajan L.; Fresh matter of aerial part; Uniformity trial; Experimental design; Cover crops.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200212
Imagem não selecionada

Imprime registro no formato completo
Extraction of red cabbage anthocyanins: optimization of the operation conditions of the column process BABT
Xavier,Marcelo Fonseca; Lopes,Toni Jefferson; Quadri,Mara Gabriela Novy; Quadri,Marintho Bastos.
The aim of this work was to extract anthocyanins from the red cabbage. Batch studies under several extraction conditions indicated that acetic acid in aqueous solution (10% V/V) was the best solvent, used in the proportion of 0.25 g of red cabbage mL-1. At this condition, column assays were carried out to evaluate the influence of the ionic force, pH, solvent flow rate, recirculated volume of red cabbage juice and the mass of red cabbage. Results showed that the pH, recirculation and mass of red cabbage had statistically significant effects, where the optimum operation conditions found for the process were pH 2.3, recirculation volume of the solvent 0.83 L and mass of red cabbage 50 g.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthocyanins; Extraction; Red cabbage; Experimental design; Optimization.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100018
Imagem não selecionada

Imprime registro no formato completo
Assessment of oxidation of leaves of Ilex paraguariensis (St. Hil) BABT
Molin,Rochele Fernanda; Valduga,Alice Teresa; Di Luccio,Marco; Dartora,Nessana; Cichoski,Alexandre José; Pistore,Mônica; Rigo,Elisandra.
This work aimed to study the oxidation of leaves of Ilex paraguariensis St. Hil, in a process similar to the oxidation of Camellia sinensis, with the purpose of developing new products based on yerba maté. So far, no previous systematic study about the oxidation of yerba maté has been found elsewhere. A Plackett-Burman experimental design was used for the screening of the significant parameters that affected the oxidation. The oxidation was indirectly quantified by following the changes in the product color, water activity, and pH with the time of processing. The factors that most influenced the process were the age of the leaves and the relative humidity of the oxidation chamber. The differences between the treatments were more evident after 3, 6 12 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physicochemical parameters; Yerba maté; Leave; Extract; Experimental design.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000200016
Imagem não selecionada

Imprime registro no formato completo
Production of Hydrolysate of Okara Protein Concentrate with High Antioxidant Capacity and Aglycone Isoflavone Content BABT
Figueiredo,Vitória Ribeiro Garcia de; Justus,Ariana; Pereira,Dafne Garcia; Georgetti,Sandra Regina; Ida,Elza Iouko; Kurozawa,Louise Emy.
Abstract This work aimed to evaluate the enzymatic hydrolysis of okara protein concentrate with respect to degree of hydrolysis (DH) in order to obtain a protein hydrolysate with high antioxidant capacity and aglycones isoflavone content. A central composite rotatable design was carried out to evaluate the influence of temperature (40 to 70°C), enzyme:substrate ratio (0.5 to 5.0%, g/100g protein) and pH (7.0 to 9.0) on DH. The optimal condition was 55°C, pH 9 and enzyme:substrate ratio of 5.0%, resulting a DH value of 35.5%. After protein hydrolysis at optimal condition, the antioxidant capacities of hydrolysate increased from 58.29 to 383.49 μM Trolox equivalent/g solids (ABTS method) and 2.41 to 15.32 μM Trolox equivalent/g solids (FRAP method) when...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soy pulp; Peptides; Cleavage of protein; Isoflavone profile; Electrophoresis; Experimental design.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100505
Registros recuperados: 58
Primeira ... 123 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional