1000 resultados para potencial de mercado
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O desenvolvimento de novas cultivares pode ser considerado como um dos fatores que têm impulsionado o crescimento do mercado de uvas de mesa no Brasil. O objetivo deste trabalho é avaliar o potencial de cultivo de cinco novas cultivares e três seleções de uvas de mesa na Serra Gaúcha. Estão sendo avaliadas a fenologia, a produção, a qualidade e o conteúdo de compostos relacionados à saúde (CRS) de genótipos de uvas com e sem sementes, produzidas na Embrapa Uva e Vinho. A aceitação das uvas foi avaliada por grupos de 32 a 63 consumidores, que atribuíram notas de 1 (ruim) a 9 (excelente) para sete características visuais e oito relacionadas ao sabor. Os resultados da avaliação sensorial e da qualidade das uvas foram submetidos à Análise de Componentes Principais (ACP).
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As a way to reduce water losses in furrow irrigation systems, used in fresh market tomato production, farmers are improperly distributing water into the field using plastic hose. The objective of this work was to study the suitability of using quick coupler sprinkler as hose connectors for water distribution in tomato plantation. The first step of the study was to assess the current hose field operation for tomato growers. Subsequently, four models of quick couplers sprinklers available in the market were tested in laboratory to determine the coefficient of resistance, the equivalent tube length, the head loss curve and the linking efficiency. As result, a structural design for hose connectors was presented using the model of coupling with the best hydraulic performance. Additionally, some technical recommendations on its use in irrigation water distribution are highlighted. Despite the requirement for additional field trials, the proposed system has potential to optimize the water use efficiency, to improve workers ergonomic conditions, and ensure good profitability to the producer.
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Seasonal variation in environmental conditions may influence gas exchange rates as well as water relations in perennial species. This work was carried out to evaluate photosynthetic rates (A), transpiration (E), stomatal conductance (g) and leaf water potential (psi f ) in 'Valencia' orange trees grafted on four different rootstocks. Measurements were made twice a day: from 9h00 to 11h00 a.m. and from 1h00 to 3h00 p.m., during January, March and July. A and g were significantly lower and psif was significantly more negative, in the afternoon. The decrease in A may be related to the reduction in g, due to the increase in the vapor pressure deficit between the air and the leaf (VPDair-leaf ) in the afternoon, when temperatures are higher. In spite of the partial stomatal closure in the afternoon, the values for E were approximately the same as those measured in the morning, due to the increase in the VPDair-leaf . A decrease in A and g could also be noted from January to July, that is, from the hot and humid summer months, to the colder and drier winter ones. It was suggested that the decrease in A and g observed from January through March, may be related to the decrease in plant growth rates, which could have influenced the source-sink relationships, since the climatic conditions for both months were similar. The decrease in A and g showed in July, seems to be related to the decrease in both the night temperature and the growth rate of plants.
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Polycyclic aromatic hydrocarbons (PAHs) are a group of compounds that have been the subject of much concern due to their toxic potential. In this study, margarine?s, vegetable cream and mayonnaise available on the Brazilian market were analyzed for pyrene, chrysene, benzo(a)pyrene, benzo(b)fluoranthene and dibenzo(a,h)anthracene. The analytical methodology involved liquid-liquid extraction, clean-up on silica gel column and determination by high performance liquid chromatography using fluorescence detector. Variable levels of contamination were found within differents brands of the same product and within differents batches of the same brand. The total PAH content was in the range of 4.1 to 7.1mug/kg in vegetable cream, 1.7 to 3.9mug/kg in margarine and 1.0 to 21.7mug/kg in mayonnaise. In general the products which according to the label contain corn oil showed the highest levels of contamination. Based on these results and on the importance of fat, oils and derived products for the intake of PAHs, it is recommended that producers of margarine, vegetable creams and mayonnaise start to control the contamination of the vegetable oils used in the elaboration of these products, in order to reduce the exposure of consumers to excessive amounts of potentially carcinogenic compounds.
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Universidade Estadual de Campinas. Faculdade de Educação Física
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Universidade Estadual de Campinas. Faculdade de Educação Física
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Universidade Estadual de Campinas . Faculdade de Educação Física
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A atividade turística tem impacto também na saúde das populações de comunidades anfitriãs. Com base em estudo etnográfico e em 14 entrevistas com monitores(as) de turismo ambiental, o objetivo deste artigo é analisar como o cenário sexual no contexto do turismo e seus scripts sexuais constroem a vulnerabilidade de caiçaras às DSTs/HIV e ao mercado sexual. Scripts sexuais tradicionais operacionalizados num cenário de "curtição", "prazer", "desinibição sexual", evidenciaram desigualdades sociais entre caiçaras e turistas que ampliam a vulnerabilidade dos jovens às DSTs/HIV e à mercantilização de sua sexualidade. Os scripts sexuais femininos (passividade/ingenuidade) dificultavam a negociação do preservativo nas cenas sexuais coletadas; os "mais pró-ativos" eram interpretados como disponibilidade para "programas". Os scripts "não negar fogo", "catar as turistas" também ampliavam a vulnerabilidade dos rapazes. O contexto turístico constrói um cenário sexual singular e atravessa as trajetórias socioafetivas dos moradores. Seu impacto deve ser considerado por políticas e programas de saúde locais.
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INTRODUÇÃO: A vigilância entomológica tem se mostrado uma importante estratégia de monitoramento da fauna de culicídeos com vistas a predizer o risco de exposição a espécies vetoras de patógenos. Esse trabalho apresenta uma lista de mosquitos identificados pela primeira vez no Rio Grande do Sul e discute o potencial epidemiológico de algumas espécies ocorrentes no Município de Maquiné com registros em outras regiões do Estado. MÉTODOS: Os mosquitos foram coletados com aspirador de Nasci e armadilhas CDC, entre dezembro de 2006 e dezembro de 2008, em área silvestre, rural e urbana do Município de Maquiné. RESULTADOS: Foram verificadas 55 espécies, das quais 22 são registradas pela primeira vez no estado e 10 são potencialmente vetoras do vírus Saint Louis, Oropouche, Aura, Trocara, Ilhéus, Rocio, Una, West Nile e encefalite equina do leste. CONCLUSÕES: Esses dados demonstram a importância da Vigilância Entomológica como ferramenta de informação e ação para a Vigilância em Saúde.
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Drosophila Fallen, 1823 (Diptera, Drosophilidae) is for long a well-established model organism for genetics and evolutionary research. The ecology of these flies, however, has only recently been better studied. Recent papers show that Drosophila assemblies can be used as bioindicators of forested environment degradation. In this work the bioindicator potential of drosophilids was evaluated in a naturally opened environment, a coastal strand-forest (restinga). Data from nine consecutive seasonal collections revealed strong temporal fluctuation pattern of the majority of Drosophila species groups. Drosophila willistoni group was more abundant at autumns, whereas D. cardini and D. tripunctata groups were, respectively, expressive at winters and springs, and D. repleta group at both seasons. The exotic species D. simulans Sturtevant, 1919 (from D. melanogaster group) and Zaprionus indianus Gupta, 1970 were most abundant at summers. Overall, the assemblage structure did not show the same characteristics of forested or urban environments, but was similar to the forests at winters and to cities at summers. This raises the question that this locality may already been under urbanization impact. Also, this can be interpreted as an easily invaded site for exotic species, what might lead to biotic homogenization and therefore can put in check the usage of drosophilid assemblages as bioindicators at open environments.
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O Minist??rio do Desenvolvimento Agr??rio, por meio da Secretaria de Reordenamento Agr??rio, implementou o Programa Nacional de Cr??dito Fundi??rio (PNCF) com o objetivo de financiar a aquisi????o de terras a trabalhadores rurais sem-terra, jovens do meio rural, arrendat??rios, meeiros e posseiros. O Programa prev?? a concess??o de b??nus adicional de redu????o do pre??o da terra para os agricultores que negociarem a aquisi????o do im??vel abaixo de um pre??o de refer??ncia. O Sistema de Monitoramento do Mercado de Terras (SMMT) acompanha os neg??cios realizados pelo PNCF, visando obter valores de refer??ncia para os im??veis financiados pelo Programa, realizando tamb??m o c??lculo do b??nus adicional. O SMMT busca, dessa forma, incentivar a redu????o do pre??o da terra para os benefici??rios e para o governo, constituindo-se ferramenta de efici??ncia no gasto p??blico e de controle social