Carbon Balance
Mostrando 13-24 de 180 artigos, teses e dissertações.
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13. MODELING OF THE EXTRACTION PROCESS OF TEA SEED OIL WITH SUPERCRITICAL CARBON DIOXIDE
Abstract The kinetics of the extraction of tea seed oil with supercritical CO2was studied. A kinetic model of the extraction of tea seed oil using supercritical CO2 was developed on the basis of the differential mass balance to simulate the extraction process. The model could simulate the distribution of the solute concentration in CO2 inside the extraction
Braz. J. Chem. Eng.. Publicado em: 2015-12
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14. The stimulating effects of the addition of glucose on denitrification and removal of recalcitrant organic compounds
A laboratory scale aerobic oxidation ditch combined with an anoxic reactor was conducted to treat wastewater from a chemical industrial park in Tianjin, China. The wastewater exhibited a low biodegradability, and the results of gas chromatography mass spectrometry (GC-MS) analysis showed that some recalcitrant organic components are present in the wastewater
Braz. J. Chem. Eng.. Publicado em: 2014-03
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15. Is there an association between postural balance and pulmonary function in adults with asthma?
OBJECTIVE: Asthma may cause systemic repercussions due to its severity and the effects of treatment. Our objective was to compare posture, balance, functional capacity, and quality of life (QOL) according to the severity of disease, as assessed by pulmonary function levels. METHOD: This cross-sectional study evaluated fifty individuals with asthma. We com
Clinics. Publicado em: 2013-11
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16. Relationship between body balance, lung function, nutritional status and functional capacity in adults with cystic fibrosis
BACKGROUND: Cystic fibrosis (CF) is a hereditary condition in which lung disease affects all patients. In addition to pulmonary involvement, the multisystemic components of CF cause significant physical limitations. However, the impact of lung function on balance control in CF has not been studied. OBJECTIVE: To assess body balance in adults with CF an
Braz. J. Phys. Ther.. Publicado em: 10/09/2013
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17. Photosynthetic induction and activity of enzymes related to carbon metabolism: insights into the varying net photosynthesis rates of coffee sun and shade leaves
The shade leaves of coffee (Coffea arabica L.) apparently retain a robust photosynthetic machinery that is comparable to that of sun leaves and can fix CO2 at high rates when subjected to high light intensities. This raises the question of why the coffee plant would construct such a robust photosynthetic machinery despite the low photosynthetic rates achieve
Theor. Exp. Plant Physiol.. Publicado em: 2013
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18. Carbon and energy balance for a soybean crop: method Eddy Covariance and the estimation of CROPGRO-Soybean model / Balanço de carbono e energia para uma lavoura de soja: método da covariância dos vórtices turbulentos e a estimativa do modelo CROPGRO-Soybean
O presente trabalho objetivou analisar o balanço de energia e a partição do saldo de radiação em suas componentes de fluxo de calor latente, de calor sensível e de calor no solo durante o ciclo da cultura da soja na região de Cruz Alta, Estado do Rio Grande do Sul; calibrar o modelo de simulação do crescimento e desenvolvimento, CROPGROSoybean (Crop
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2012
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19. Estudo da captura de dióxido de carbono por misturas de hidróxido de cálcio e óxido de magnésio em baixas temperaturas
The present work has studied the carbonation reaction of hydrated lime modified by small percentages of magnesium dioxide (MgO) by the carbon dioxide (CO2) from the exhaust gas of a petrol engine. For this purpose, spherical pellets of solid adsorbents were synthesized and submitted to carbonation essays in a lab-scale fixed bed reactor. The samples conversi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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20. Ecologia da produção e da competição intra-específica do Eucalyptus grandis ao longo de um gradiente de produtividade no estado de São Paulo / Production ecology and intra-specific competition of Eucalyptus grandis across a gradient of productivity in São Paulo State
A produtividade dos plantios de eucalipto no Brasil apresentou ganhos significativos nas últimas décadas devido a avanços em melhoramento genético e silvicultura. Contudo, a produção de madeira representa apenas uma fração da produtividade primária bruta (GPP). Avaliar fluxos e partição de carbono (C) entre os diferentes componentes da floresta, e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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21. Management model for the development of software applied to business sustainability in the context of global climate changes
This article introduces a social and environmental management model based on the results of an empirical study that was conducted using the grounded theory method. It outlines a social and environmental mapping of the different economic segments of the Brazilian business universe to support decisions that are inherent to the sustainable management of the sup
JISTEM - Journal of Information Systems and Technology Management. Publicado em: 2012-04
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22. Metabolic changes in ruminant calves fed cation-anion diets with different proportions of roughage and concentrate
Two experiments were carried out with twenty-four male weaned Holstein calves to verify the influence of different dietary cation-anion concentrate and roughage proportions on calves metabolism. In the first experiment, calves were fed rations with -100, +200 and +400 mEq cation-anion balance/kg of dry matter, containing 60% of roughage and 40% of concentrat
Revista Brasileira de Zootecnia. Publicado em: 2012-02
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23. Adsorção de corantes têxteis utilizando biossorventes alternativos
The textile effluents when launched into water bodies reduce the penetration of sun light harming the photosynthesis processes. Besides this, the dyes have been pointed out as potentially toxic substances. In general, the removal processes are based on physicochemical systems followed by biological treatment. The sorption process, besides presenting high rem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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24. Moderate warm temperature improves shoot growth, affects carbohydrate status and stimulates photosynthesis of sweet orange plants
Citrus plants were grown under two thermal conditions for evaluating carbon metabolism acclimation to moderate warm temperature (30/20ºC, day/night), and its likely impact on plant growth. As reference, plants were grown at 25/20ºC, in which they were subjected to optimum temperature for photosynthesis during the diurnal period (25ºC). Higher photosynthet
Braz. J. Plant Physiol.. Publicado em: 2012