Zero Water Exchange
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Efeitos de níveis protéicos e probiótico no desempenho do camarão marinho cultivado em meio heterotrófico.
O presente trabalho teve como objetivo avaliar o desempenho do camarão marinho Litopenaeus vannamei alimentado com dietas de diferentes níveis protéicos em sistema heterotrófico com e sem a adição de probiótico. Foi adotado um delineamento experimental inteiramente casualizado com arranjo fatorial 4×2, com quatro níveis de proteína na dieta (200, 2
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2012
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2. Características fotossintéticas da palmeira macaúba (Acrocomia aculeata (Jacq.) Lodd. ex Mart.) submetidas a deficiência hídrica / Photosynthetic characteristics of macaúba palm (Acrocomia aculeata (Jacq.) Lodd. ex Mart.) subjected to water shortage
Com o objetivo de avaliar as relações hídricas, os parâmetros fotossintéticos, a capacidade de ajustamento osmótico e de recuperação dos mesmos em plantas jovens de macaúba submetidas à deficiência hídrica, realizaram-se dois experimentos em casa de vegetação. Em ambos, as mudas de macaúba foram recebidas com idade de 10 meses e cultivadas em
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/09/2011
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3. 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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4. 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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5. Estudos estruturais de histatina-5 e seu análogo, TOAC0-histatina-5: interação com metais e sistemas biomiméticos / Structural studies of Histatin-5 and its analogue, TOAC0-Histatin-5: interaction with metals and biomimetic systems
The mechanism of action of histatin-5 (Hst-5), an antifungal antimicrobial peptide from human saliva is not completely clarified. Circular dichroism (CD), fluorescence, and electron paramagnetic resonance (EPR) were used to examine the conformational behavior of Hst-5 and its analogue containing the paramagnetic amino acid TOAC at the N-terminus (TOAC0-Hst-5
Publicado em: 2008
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6. UtilizaÃÃo de cepas de bactÃrias no cultivo intensivo de tilÃpia Oreochromis niloticus, sob sistema de renovaÃÃo zero Ãgua / Use of strains of bacteria in the intensive culture of tilapia Oreochromis niloticus, under zero water renewal system
O controle da qualidade da Ãgua em sistemas intensivo de cultivo de peixes Ã, via de regra, um dos pontos crÃticos para o sucesso do supracitado sistema. Os problemas mais comuns de qualidade de Ãgua nos sistemas em questÃo estÃo relacionados com depleÃÃo do oxigÃnio dissolvido, acÃmulo de matÃria orgÃnica e nitrogÃnio inorgÃnico, particularmen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2006
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7. Leaf gas exchange in Green-Dwarf coconut submitted to cycles of water deficit / Trocas gasosas em coqueiro anão-verde submetido a ciclos de deficiência hídrica
Com o objetivo de avaliar as trocas gasosas em nível foliar, as relações hídricas, a capacidade de ajuste osmótico e a regulação estomática em plantas jovens de coqueiro Anão-verde submetidas à deficiência hídrica, realizou-se um experimento em casa de vegetação utilizando dois ecotipos de coqueiro anão-verde do Brasil: Anão-Verde de Una (UGD
Publicado em: 2006
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8. Evaluation of the partitioning of bound inorganic phosphate during medium and intermediate phosphate in equilibrium water oxygen exchange reactions of yeast inorganic pyrophosphatase.
During the rapid exchange of oxygens of Pi with water catalyzed by yeast inorganic pyrophosphatase, Pi at the catalytic site may either dissociate or undergo reversible loss of an oxygen to water. The effective partitioning of bound Pi during exchange starting with medium Pi containing 18O in all four oxygens has been evaluated by mass spectral analysis of t
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9. Analysis of the Relative Increase in Photosynthetic O2 Uptake When Photosynthesis in Grapevine Leaves Is Inhibited following Low Night Temperatures and/or Water Stress1
We found similarities between the effects of low night temperatures (5°C–10°C) and slowly imposed water stress on photosynthesis in grapevine (Vitis vinifera L.) leaves. Exposure of plants growing outdoors to successive chilling nights caused light- and CO2-saturated photosynthetic O2 evolution to decline to zero within 5 d. Plants recovered after four w
American Society of Plant Physiologists.
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10. Mesophyll Resistance and Carboxylase Activity: A Comparison under Water Stress Conditions
The response of several leaf gas exchange parameters were monitored with decreasing leaf water potential in Phaseolus vulgaris L. leaflets. These included photosynthesis, transpiration, CO2 compensation point, ribulose 1,5-diphosphate carboxylase activity, boundary layer plus stomatal, and mesophyll resistance to diffusion of CO2. Mesophyll resistance was ca
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11. The Function of Ascorbic Acid in Photosynthetic Phosphorylation.
Ascorbate is oxidized to the free radical monodehydroascorbate by O2.- and by H2O2 (through the action of ascorbate peroxidase) formed in the Mehler reaction by isolated spinach (Spinacia oleracea) thylakoids. Light-dependent electron transport from water to monodehydroascorbate is shown to be coupled to ATP formation with a ratio ATP:O2 of 2. In the presenc
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12. Drought Stress and Elevated CO2 Effects on Soybean Ribulose Bisphosphate Carboxylase Activity and Canopy Photosynthetic Rates 1
Soybean (Glycine max [L.] cv Bragg) was grown at 330 or 660 microliters CO2 per liter in outdoor, controlled-environment chambers. When the plants were 50 days old, drought stress was imposed by gradually reducing irrigation each evening so that plants wilted earlier each succeeding day. On the ninth day, as the pots ran out of water CO2 exchange rate (CER)