Exchange Rate Systems
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. Comparison of carbon sequestration potential in agricultural and afforestation farming systems
In the last few decades, many forests have been cut down to make room for cultivation and to increase food or energy crops production in developing countries. In this study, carbon sequestration and wood production were evaluated on afforested farms by integrating the Gaussian diameter distribution model and exponential diameter-height model derived from sam
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-04
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2. Resposta do arroz de terras altas a diferentes doses de carvão vegetal: desenvolvimento da planta e deficiência hídrica / Resposta do arroz de terras altas a diferentes doses de carvão vegetal: desenvolvimento da planta e deficiência hídrica / Response of upland rice to different doses of charcoal, plant development and water deficit / Response of upland rice to different doses of charcoal, plant development and water deficit
The average national rice yield was 11,3 million tones, with a harvested area of about 2,7 million hectares (IBGE 2010). Part of this comes from upland production systems in savannas that have high acidity, low fertility, with low phosphorus and potassium levels, low cation exchange capacity and high aluminum saturation. Upland rice in the Brazilian savannas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2011
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3. Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems
Cu (II) removal equilibrium from aqueous solutions using calcined clays "Bofe" and "Verde-lodo" has been studied by batch and fixed-bed in static and dynamic systems, respectively. Analyses were performed for physicochemical characterization of clays using the techniques: X-ray fluorescence (XRF), thermogravimetry (TG), N2 adsorption (BET) and Cationic Excha
Materials Research. Publicado em: 29/11/2011
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4. Cultivo de cachama blanca en altas densidades y en dos sistemas cerrados
The objective of this work was to evaluate the tolerance of red-bellied pacu, Piaractus brachypomus, to high-density in closed production systems. Nine hundred fingerlings with 44.3±26 g weight were distributed in six 4.8 m³ concrete tanks. Three tanks had zero water exchange rate (SCR), and in the other three water was connected to a bioclarifier (SRA). A
Pesquisa Agropecuária Brasileira. Publicado em: 2011-04
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5. Equilibrium study of binaries and ternary ion exchange systems envolving copper, cadmium and calcium ions by alginate biopolymer / Estudo do equilibrio dos sistemas binarios e ternario de troca ionica dos ions cobre, cadmio e calcio pelo biopolimero alginato
In this work, it was studied the ion exchange process involving copper, cadmium and calcium ions. The heavy metals, copper and cadmium, were evaluated due to its high toxicity, its presence in industrial effluent and difficulty in its removal when in low concentrations, however, above permitted levels by law. Alginate was used as ionic exchanger. In the pres
Publicado em: 2009
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6. Produção de juvenis do camarão Litopenaeus vannamei com diferentes densidades de estocagem em baixa salinidade e meio heterotrófico
Zero-water exchange systems and low salinity culture are used by shrimp farmers as alternatives to alleviate the restrictions imposed by environmental regulations regarding the use of coastal areas, and allow better control of diseases and their spread. Thus, the effects at six densities (2000, 4000, 6000, 8000, 10000, and 12000 shrimp/m) in Litopenaeus vann
Publicado em: 2009
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7. Influência das baixas salinidades na composição microbiana e no desempenho de Juvenis de Litopenaeus vannamei cultivados em sistema super-intensivo sem Renovação de Água
Considered environmentally friendly, due to minimal water use and effluents emission, the production systems performed without water exchange present the additional advantages of the possibility of rearing marine shrimp far from the valued coastal zone and close to consumption centers, as well as supplementation of the animals diet through their characterist
Publicado em: 2009
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8. Estudo de desempenho do aquecedor solar de baixo custo
One alternative to reduce consumption of electric energy to heat water will be popularize the use of solar energy. This work comes to contribute of studies about the Low Cost Solar Heater , ASBC, which is a new concept of solar water heater for home, all made by polymeric materials with relatively small investment and can be built manually. The plate of the
Publicado em: 2009
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9. BOOSTING FOR RECOMMENDATION SYSTEMS / BOOSTING PARA SISTEMAS DE RECOMENDAÇÃO
With the amount of information and its easy availability on the Internet, many options are offered to the people and they, normally, have little or almost no experience to decide between the existing alternatives. In this scene, the Recommendation Systems appear to organize and recommend automatically, through Machine Learning, the interesting items. One of
Publicado em: 2008
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10. Detecção Automática de Ondas de Elliott em Mercado Acionário / Automatic Identification of Elliott Waves in Stocks Market
The Elliott Wave analysis is a technique developed for the prediction of prices of financial assets (stocks, exchange rates etc.). This work introduces the basic concepts of the financial market, focusing mainly on the Elliott Wave principle, which differs from other techniques for providing direction and intensity of changes in shares / stocks prices in the
Publicado em: 2008
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11. Regimes cambiais e intervenções no Mercado de câmbio: uma abordagem a partir da experiência brasileira
This research analyzes the Brazilian exchange rate system and the exchange rate interventions after flexible exchange rate system implementation in 1999, and have like base the "fear of floating" approach, the exchange rate interventions theory and of the fact exchange rate classification. The evidences found for Brazil suggest that the exchange rate interve
Publicado em: 2007
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12. Regimes cambiais e intervenÃÃes no Mercado de cÃmbio: uma abordagem a partir da experiÃncia brasileira
This research analyzes the Brazilian exchange rate system and the exchange rate interventions after flexible exchange rate system implementation in 1999, and have like base the "fear of floating" approach, the exchange rate interventions theory and of the fact exchange rate classification. The evidences found for Brazil suggest that the exchange rate interve
Publicado em: 2007