3,019 research outputs found
Certificação e selos de qualidade asseguram requisitos na produção.
Em 2011, o Committee on Fisheries (Cofi) da Food and Agriculture Organization (FAO) comitê de pesca da FAO, órgão da Organização das Nações Unidas (ONU) aprovou o documento que contém as Diretrizes Técnicas para Certificação da Aquicultura, visando ao desenvolvimento, à organização e à implementação de regimes confiáveis de certificação de aquicultura. Os países signatários deverão internalizá-lo e usá-lo como base para adaptar ou criar as normas relacionadas ao tema. O documento abrange questões de saúde e bem-estar animal, segurança alimentar, integridade ambiental e aspectos socioeconômicos
Charge Influence On Mini Black Hole's Cross Section
In this work we study the electric charge effect on the cross section
production of charged mini black holes (MBH) in accelerators. We analyze the
charged MBH solution using the {\it fat brane} approximation in the context of
the ADD model. The maximum charge-mass ratio condition for the existence of a
horizon radius is discussed. We show that the electric charge causes a decrease
in this radius and, consequently, in the cross section. This reduction is
negligible for protons and light ions but can be important for heavy ions.Comment: 4 pages, 0 figure. To be published in Int. J. Mod. Phys. D
Morfologia dos estágios zoea e megalopa de Austinixa bragantina Coelho, 2005 (Crustacea: Brachyura: Pinnotheridae) cultivado em laboratório.
Resumo P-2325
Basketball game-related statistics that discriminate between teams season-long success
The aim of the present study was to identify the game-related statistics that discriminate between season-long successful and unsuccessful basketball teams participating in the Spanish Basketball League (LEB1). The sample included all 145 average records per season from the 870 games played between the 2000-2001 and the 2005-2006 regular seasons. The following game-related statistics were gathered from the official box scores of the Spanish Basketball Federation: 2- and 3-point field-goal attempts (both successful and unsuccessful), free-throws (both successful and unsuccessful), defensive and offensive rebounds, assists, steals, turnovers, blocks (both made and received), and fouls (both committed and received). To control for season variability, all results were normalized to minutes played each season and then converted to z-scores. The results allowed discrimination between best and worst teams' performances through the following game-related statistics: assists (SC=0.47), steals (SC=0.34), and blocks (SC=0.30). The function obtained correctly classified 82.4% of the cases. In conclusion, season-long performance may be supported by players' and teams' passing skills and defensive preparation
The effects caused by the replacement of native riparian forest with Eucalyptus sp. on the benthic macro-invertebrate community.
The replacement of native riparian forests with exotic plants, especially Eucalyptus sp. can cause changes in ecological processes of small orders rivers. The leaves of Eucalyptus sp. have lower nutrients concentration, higher hardness and secondary metabolites which inhibit the decomposing micro-organisms and benthic macro-invertebrate colonization, which are the connection between the dead organic matter and the rest of the food chain. Thus the aim of the study was to test the following hypothesis: leaf decomposition rate will be lower in the substrate composed of Eucalyptus sp. leaves, when compared to the substrate composed of native tree species leaves; the benthic macro-invertebrates diversity will be lower in the substrate composed of Eucalyptus sp. leaves than the one composed of native tree species leaves. Sixty litter bags were used in the experiment, 30 of them were filled with 5 g of Eucalyptus sp leaves and the other 30 with a mixture of native trees leaves. From the results it was concluded that leaf decomposition rates were similar for both substrates, substrate composed of native trees leaves and substrate composed of Eucalyptus sp. leaves; the benthic macroinvertebrates diversity was lower in the substrate composed of Eucalyptus sp. leaves when compared to the substrate composed of native tree species leaves
Avaliação de linhagens de feijão-caupi em Igarapé Açu-PA.
O estudo visou avaliar de forma preliminar os dados dos ensaios no município de Igarapé Açu-PA, incluindo a variabilidade genética, relação entre os componentes de produção e potencial produtivo. Foram testadas 40 linhagens de feijão-caupi, em dois ensaios: porte semi-ereto e ereto, em blocos inteiramente casualizados, com quatro repetições, em 2004 e 2005. Houve diferenças significativas entre as linhagens e anos, e interação linhagem ano para maioria dos caracteres agronômicos. A produtividade média das linhagens foi de 1.289,6kg/ha. O ano de 2004 apresentou maior precipitação e irradiação, resultando nas maiores produtividades médias. As linhagens do tipo semi-eretas mantiveram a produtividade média alta na mesma magnitude independente do ano. As linhagens apresentam variabilidade genética acima de 5%. O comprimento da haste principal apresentou a menor influencia ambiental e a maior correlação com a produtividade podendo ser indicada na seleção materiais promissores, assim como os componentes de produção como o número de semente por vagem e peso de 100 sementes
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