Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 9
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A comparison of two techniques to discriminate continental origin of Atlantic salmon (Salmo salar L.) off West Greenland ArchiMer
Reddin, David; De Pontual, Helene; Prouzet, Patrick.
Two techniques of stock discrimination both utilizing scales, i. e. termed as classical technique and shape analysis, are compared for discriminating between North American and European Atlantic salmon (Salmo salar L.) caught off West Greenland. Three scales from each of 60 salmon were analyzed: 30 from North American and 30 from European-origin salmon collected from home rivers in 1982. The best results indicated misclassification and error rates of 0% for shape analysis and 5.0% and ± 1.7%, respectively, for the classical technique. A nested ANOVA indicated that variation was greater between scales of salmon of North American and European origin than from several scales from the same salmon. It was concluded that shape analysis with computer-aided...
Tipo: Text Palavras-chave: Salmo salar; Scalimétrie; Analyse de forme; Discrimination; Salmo salar; Meristics; Shape analysis; Discrimination.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/00189/30073/28561.pdf
Imagem não selecionada

Imprime registro no formato completo
An Extension of the Blinder-Oaxaca Decomposition Technique to Logit and Probit Models AgEcon
Fairlie, Robert W..
The Blinder-Oaxaca decomposition technique is widely used to identify and quantify the separate contributions of group differences in measurable characteristics, such as education, experience, marital status, and geographical differences to racial and gender gaps in outcomes. The technique cannot be used directly, however, if the outcome is binary and the coefficients are from a logit or probit model. I describe a relatively simple method of performing a decomposition that uses estimates from a logit or probit model. Expanding on the original application of the technique in Fairlie (1999), I provide a more thorough discussion of how to apply the technique, an analysis of the sensitivity of the decomposition estimates to different parameters, and the...
Tipo: Working or Discussion Paper Palavras-chave: Logit; Probit; Decomposition; Race; Gender; Discrimination; Research Methods/ Statistical Methods; C8; J7.
Ano: 2003 URL: http://purl.umn.edu/28425
Imagem não selecionada

Imprime registro no formato completo
Assessment from space of mangroves evolution in the Mekong Delta, in relation to extensive shrimp farming ArchiMer
Tong, P. H. S; Auda, Y; Populus, Jacques; Aizpuru, M; Al Habshi, A. Al; Blasco, F.
This study is an attempt to produce an assessment of the impact of shrimp aquaculture in the Mekong Delta (Viet Nam) on mangrove ecosystems. For this exercise we selected two sub-areas (Ca Mau and Tra Vinh provinces) encompassing a variety of land uses and ecological conditions. Twenty stations in Tra Vinh and 15 stations in Ca Mau have been surveyed several times from September 2000 to March 2002. Field investigations included mangrove soils studies, measurements of pH and salinity of the water, analysis of mangrove flora, and density and structure of the vegetation. Four Systeme Probatoire de l'Observation de la Terre (SPOT) scenes were used for the discrimination of mangrove types and for the delineation of landscape units. For the first time, five...
Tipo: Text Palavras-chave: Crevette; Aquiculture; Exploitation agricole; Mangrove; Discrimination; Indice végétation; Extrême Orient; Asie; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata.
Ano: 2004 URL: https://archimer.ifremer.fr/doc/2004/publication-2303.pdf
Imagem não selecionada

Imprime registro no formato completo
Diagnóstico de deficiencias de nitrógeno y maganesio con imágenes digitales. Colegio de Postgraduados
Reyes Flores, Maciel.
La detección oportuna de deficiencias nutrimentales en hojas de plantas cultivadas permite tomar medidas correctivas inmediatas asi como predecir rendimientos. Las características espectrales y de textura de las imágenes se pueden utilizar para obtener información y correlacionarlos con el estado nutrimental de elementos esenciales que generan sintomatología similar en hojas de las plantas. En la presente investigación se estableció un experimento para medir las propiedades espectrales y característica texturales del cultivo de frijol con diferentes concentraciones de nitrógeno y magnesio de imágenes obtenidas con escáner. A partir de los valores de reflectancia se generaron modelos de regresión para asociar la concentración de nitrógeno y magnesio en el...
Palavras-chave: Reflectancia; Discriminación; Espacios de color; Textura; Redes neuronales; Reflectance; Discrimination; Color spaces; Texture; Neural networks; Edafología; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/2077
Imagem não selecionada

Imprime registro no formato completo
Efficiency assessment of Flash Profiling and Ranking Descriptive Analysis: a comparative study with star fruit-powdered flavored drink Ciênc. Tecnol. Aliment.
MAMEDE,Maria Eugênia de Oliveira; BENASSI,Marta de Toledo.
Abstract The objective of this study was to assess the efficiency of Flash Profiling (FP) and Ranking Descriptive Analysis (RDA) methods regarding sensory characterization using star fruit-flavored drink as matrix. Sample A was used as a standard. Other three samples were prepared based on sample A, by adding sugar, citric acid, carboxymethylcellulose or dye. The same panel (twelve assessors) was used to carry out FP and, subsequently, RDA analysis. The qualitative training stage used in RDA method showed no difference regarding the assessors’ performance and panel consensus compared to FP. Both methods were efficient and discriminated samples in a similar way and in agreement with the physicochemical characterization. However, astringent and bitter...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sensory characterization; Tropical fruit; Discrimination; Ranking procedure; Descriptive analysis.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000200195
Imagem não selecionada

Imprime registro no formato completo
Identification of Saccharomyces cerevisiae strains for alcoholic fermentation by discriminant factorial analysis on electronic nose signals Electron. J. Biotechnol.
Calderon-Santoyo,Montserrat; Chalier,Pascale; Chevalier-Lucia,Dominique; Ghommidh,Charles; Ragazzo-Sanchez,Juan Arturo.
An electronic nose (E-nose) coupled to gas chromatography was tested to monitor alcoholic fermentation by Saccharomyces cerevisiae ICV-K1 and Saccharomyces cerevisiae T306, two strains well-known for their use in oenology. The biomass and ethanol concentrations and conductance changes were measured during cultivations and allowed to observe the standard growth phases for both yeast strains. The two strains were characterized by a very similar tendency in biomass or ethanol production during the fermentation. E-nose was able to establish a kinetic of the production of aroma compounds production and which was then easy to associate with the fermentation phases. Principal Component Analysis (PCA) showed that the data collected by E-nose during the...
Tipo: Journal article Palavras-chave: Alcoholic fermentation; Discrimination; Electronic nose; Gas sensor; Yeasts.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400008
Imagem não selecionada

Imprime registro no formato completo
Potential of F-specific RNA bacteriophages to discriminate sources of faecal pollution in French shellfish ArchiMer
Caprais, Marie-paule; Le Mennec, Cecile; Pommepuy, Monique; Le Saux, Jean-claude; Gourmelon, Michele.
In Europe, shellfish harvesting areas are classified according European Directive EC N°854/2004, using classic faecal indicator levels (Escherichia coli). A better indicator is needed, however, because shellfish may contain other human pathogens. Other indicator organisms have therefore been evaluated and, among these, coliphages meet most of the requirements to serve as indicators and models for enteroviruses. In order to evaluate the capacity of coliphages as indicators, a total of 764 shellfish were sampled in 2004 from 70 shellfish harvesting areas monitored by the Ifremer microbiological surveillance network (REMI, http://www.ifremer.fr/envlit/), and tested for F-specific RNA bacteriophages (FRNAPH). Two species of bivalve mollusc were collected...
Tipo: Text Palavras-chave: F-specific RNA bacteriophage; Shellfish; Faecal pollution; Discrimination.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00066/17749/15271.pdf
Imagem não selecionada

Imprime registro no formato completo
Understanding the dynamics of δ13C and δ15N in soft tissues of the bivalve Crassostrea gigas facing environmental fluctuations in the context of Dynamic Energy Budgets (DEB) ArchiMer
Emmery, Antoine; Lefebvre, Sebastien; Alunno-bruscia, Marianne; Kooijman, S. A. L. M..
We studied the dynamics of stable isotopes δ13C and δ15N of an opportunistic suspension feeder the Pacific oyster (Crassostrea gigas) to better understand the factors that influence the trophic enrichment (trophic-shift, Δ) between primary producers and consumers. Most of the previous studies on this topic do not quantify mass fluxes or isotopic discrimination phenomena in the organism, which are two pillars in isotope ecology. We used a dynamic energy budget (DEB) approach (Kooijman, 2010) to quantify i) the fluxes of elements and isotopes in C. gigas soft tissues and ii) the impact of the scaled feeding level, the organism mass and the isotopic ratio of food on the "trophic-shift" Δ, and isotope turnover in tissues. Calibration and parametrization...
Tipo: Text Palavras-chave: Oyster; Isotopic ratio; Discrimination; Trophic-shift; Diet; DEB theory.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00043/15434/12784.pdf
Imagem não selecionada

Imprime registro no formato completo
Valoración económica y social de un parque urbano de la Ciudad de México Colegio de Postgraduados
Flores Xolocotzi,Ramiro.
Se realizó un análisis de estudios de caso que demostró diversos problemas sociales en los parques urbanos del mundo, destacando un problema histórico de exclusión de grupos vulnerables como mujeres, hombres homosexuales, etnias/razas y personas con capacidades diferentes. Bajo una óptica de equidad e inclusión se sugiere que los planificadores de parques contemplen una visión paisajística que permita el desarrollo de un Sistema Integral de Espacios Verdes Citadinos que comprenda esquemas de participación ciudadana y herramientas ecológicas, sociales y económicas. Una de estás últimas, es la valoración económica a través de modelos de disposición de pago y que puede ser aplicada en análisis beneficio-costo bajo una perspectiva que integre aspectos sociales...
Tipo: Tesis Palavras-chave: Discriminación; Espacio urbano; Valoración contingente; Doctorado; Forestal; Discrimination; Urban space; Contingent valuation.
Ano: 2008 URL: http://hdl.handle.net/10521/1674
Registros recuperados: 9
Primeira ... 1 ... 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