Energetic Resources
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Special offer while stocks last: high-energy pulse of nectar caused by a massive post-fire flowering of Sinningia elatior (Gesneriaceae) in an area of Cerrado and implications for its pollination
Resumo A intensa floração pós-fogo de Sinningia elatior (Gesneriaceae) foi estudada em uma área de Cerrado. Para estudar o sistema reprodutivo, testes de polinização foram realizados no campo. Espécimes de S. elatior foram encontrados isolados ou agrupados na área de estudo, as flores são tubulares, alaranjadas/avermelhadas e desprovidas de odor. Ap
Rodriguésia. Publicado em: 03/10/2019
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2. Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon
ABSTRACT Although ariid catfishe species are known to use coastal systems during some stages of their life cycles, the energetic contribution of estuarine resources and habitat use by many species in this family are still unclear. We used stable isotope analyses to estimate the assimilation of primary carbon sources and to infer the use of estuarine and fres
Zoologia (Curitiba). Publicado em: 06/05/2016
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3. Percepção pública das instalações nucleares / Public perception of nuclear installations
The key for nuclear renaissance is public acceptance. Facing energetic needs that occur around the world and lack of resources, the work of characterizing and proposing new models to represent public opinion is extremely important to all stakeholders. Even though public opinions study on risks is relatively recent, may approaches of this subject have been su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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4. Caracterização de biomassas brasileiras para fins de aproveitamento energético / Characterization of brazilian biomasses for energy recovery
New energetic alternatives have been the subject of discussion about conservation of natural resources. Such discourses are based mainly on reducing emissions of greenhouse gases and other pollutants, caused mostly by the use of fossil fuels, major source of energy today. In view of the applicability of biomass as energy input, this paper presents an experim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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5. Incorporação de energia na vida útil de uma colhedora autopropelida de cana-de-açúcar / Energy embodiment in life cycle of a self-propelled sugarcane harvester
The energy subject is one of the main challenges of 21st century. The geopolitical and environment aspects, they are concern sources to the current economic model. Brazil presents advantages in comparison to the world due to the use of renewable energy. Since 2007, products from the sugarcane have assumed the first place as a renewable source in the Brazilia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/11/2011
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6. Método para estimar o tamponamento nutricional para vacas de corte em sistemas pastoris.
Planning forage needs in beef cattle enterprises is necessary for efficient utilization of genetic and environmental resources in pastoral systems and to generate economic benefits in an environmentally sound way. Production risk evaluation is essential in feed planning for cow-calf operations in pastoral systems. The proposed method to accomplish with produ
Planaltina. Publicado em: 2011
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7. Análise sob restrições baseada em um raciocínio energético para o problema de escalonamento tempo real de sistemas de gerenciamento de workflow
This work propose a method of analysis under constraints applied to the problem of real time scheduling in workflow management systems. The goal is to filter the start of activities in order to eliminate inconsistent dates with scheduling solutions and to identify inadmissible schedules due to the inability of energy resources involved. The adopted model is
Publicado em: 2009
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8. Distribuição e disponibilidade de recursos florais e estratégias de forrageamento na interação entre beija-flores e Palicourea rígida (Rubiaceae)
Some pollination mechanisms represent mutualistics interactions, in which the plants offer nectar and pollen and the pollinators carry the pollen grains. The hummingbirds are the more specialized pollinators among the birds, and their high energetic cost to fly, force them to develop feeding strategies to obtain the highest energetic gains with the lowest co
Publicado em: 2009
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9. Fontes de energia : usos e consequências proposta de material didático para o ensino de Ciências
The first decade of the XXI century is over and now a new vision of the world rises. This new vision is based on the understanding that our natural resources will not last forever and also that the irresponsible use of those resources will have serious effects on life on earth. The present situation demands a change in the way we see social organizations. Th
Publicado em: 2009
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10. Carvão vegetal e siderurgia: de elo perdido a solução para um mundo pós-Kyoto / Charcol based iron &steelmaking: from primitive technological model to solution for a post-Kyoto world
In a global-warming-frightened world, the positive carbon balance of charcoal-based iron &steel making recovers it from a past outshined by the dominance of the large fossil fuel mills. Nevertheless, the risk of not being able to profit from the global decarbonization consensus is material, owing to the dependency on deforestation. This is true even being th
Publicado em: 2009
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11. Incidência de sedentarismo no tempo livre em professores de Educação Física da grande Goiânia
The sedentarism, as secondary risk factor, has been studied scientifically since 1950. But only in 1992 it has been recognized as primary risk factor (casual, major) to population morbimortality, mainly by cardiovascular diseases. According to cause/effect logic and epidemiologic studies, the sedentarism in leisure has been considered an independent variant
Publicado em: 2009
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12. Produção de biodiesel via transesterificação do óleo de nabo forrageiro
The obtainment of solid, liquid and gaseous fuels from biomass is among the well-known possibilities of the use of the energetic resources. Brazil is considered a privileged country to develop from biomass point of view, due to its vast farmland, abundance of water and high incidence of solar radiation on the land, and the availability of rural workforce. Pr
Publicado em: 2009