Carbon And Nitrogen Metabolism
Mostrando 1-12 de 183 artigos, teses e dissertações.
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1. How increased atmospheric carbon dioxide and ‘The Law of the Minimum’ are contributing to environmental obesity
Resumo Justus von Liebig observou que era possível aumentar a produção agrícola adicionando pequenas quantidades de nitrogênio (N), fósforo (P) e potássio (K) aos solos. Essa descoberta levou a mais recente revolução agrícola. Contudo, uma vez que a maioria das plantas e microrganismos podem ser não-homeostáticos em relação a composição quím
Acta Limnol. Bras.. Publicado em: 28/11/2019
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2. 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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3. Avaliação da utilização do dióxido de carbono proveniente da fermentação alcoólica no cultivo de Spirulina (Arthrospira) platensis: uso simultâneo de nitrato de sódio e sulfato de amônio como fontes de nitrogênio em fotobiorreator aberto / Evaluation of the use of carbon dioxide from alcoholic fermentation on Spirulina (Arthrospira) platensis cultivation: simultaneous use of sodium nitrate and ammonium sulphate as nitrogen sources in open photobioreactor
The main objective of this work was the evaluation of the potential of using carbon dioxide from alcoholic fermentation on Spirulina (Arthrospira) platensis cultivation, aiming to prove the feasibility of applying an effluent gas in the production of high added-value microbial biomass. In order to do so, the cyanobacterium was cultivated in laboratorial-scal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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4. 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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5. VARIAÇÃO NA COMPOSIÇÃO ISOTÓPICA DO CARBONO E NITROGÊNIO DA MATÉRIA ORGÂNICA E BIOMASSA DA COROA FOLIAR DE AECHMEA AQUILEGA (SALISB.) GRISEB BROMELIACEAE EM CAATINGA, AGRESTE E MATA ATLÂNTICA DE SERGIPE. / CHANGE IN COMPOSITION OF CARBON AND NITROGEN ISOTOPE OF ORGANIC MATTER AND BIOMASS LEAF CROWN AECHMEA AQUILEGA (SALISB.) GRISEB BROMELIACEAE CAATINGA IN, THE ATLANTIC AND AGRESTE SERGIPE.
Estudos isotópicos para determinar os valores dos isótopos do carbono foliar mostram que estes variam -10 a -28 do padrão PDB. Este estudo analisou a composição isotópica do Carbono e Nitrogênio foliar e a matéria orgânica acumulada na coroa foliar de Aechmea aquilega de três habitats: Caatinga (Poço Verde), Mata Atlântica (Pirambu) e em um área
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2011
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6. Respirometria e determinação das exigências de energia e produção de metano de fêmeas bovinas leiteiras de diferentes genótipos
Standart procedures were estimated in order to calibrate a respirometric chamber for large animals at Metabolism and Calorimetry Laboratory of Veterinary Scholl of Federal University of Minas Gerais, Brazil. Correction factors were calculated for oxigen, carbon dioxide and methane gases, and values were 1.0001; 0.8972 and 1.0755. The nutricional requirements
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2011
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7. Effects of nitrate and phosphate availabilities on growth, photosynthesis and pigment and protein contents in colour strains of Hypnea musciformis (Wulfen in Jacqu.) J.V. Lamour. (Gigartinales, Rhodophyta)
In Brazil, Hypnea musciformis is the main raw material for carrageenan production and the knowledge of nitrogen and phosphorus metabolism in algae is critical for the success of cultivation because these elements can limit seaweed productivity. Thus, the objective of this study was to evaluate the effects of nitrate (zero to 100 μM) and nitrate plus phospha
Revista Brasileira de Farmacognosia. Publicado em: 13/05/2011
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8. Streptococcus mutans GlnK protein: an unusual PII family member
Streptococcus mutans is a Gram-positive bacterium present in the oral cavity, and is considered to be one of the leading causes of dental caries. S. mutans has a glnK gene, which codes for a PII-like protein that is possibly involved in the integration of carbon, nitrogen and energy metabolism in several organisms. To characterize the GlnK protein of S. muta
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-05
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9. Longevidade foliar, compostos fenolicos e nitrogenados em arvores e lianas de um fragmento de Cerrado na Estação Experimental de Itirapína, São Paulo / Leaf life span, nitrogenous and phenolic compunds in trees and lianas from a Cerrado fragment in the Itirapina experimental station in São Paulo
Trees and lianas present different strategies for allocating resources during the phonological cycle. Whereas Lianas are important floristic components and account for a significant number of rainforest species, few studies have been conducted in the Cerrado (a savanna like vegetation) biome. The duration of the leaf life span in different species reflects b
Publicado em: 2010
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10. Physiological aspects of coffee growth and production / Aspectos fisiológicos do crescimento e da produção do cafeeiro
In this work, changes in vegetative growth, crop production, branch die-back, gas exchange, carbohydrate metabolism, nitrogen and pigment concentration were investigated in leaves and branch segments in coffee trees grown (north-south orientation) under field conditions along two years. Samplings and measurements were conducted using outer leaves from the up
Publicado em: 2009
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11. Effects of ZmDof1 and OsDof25 transcriptional factors superexpression on nitrogen usage efficiency in Arabidopsis. / Efeito da superexpressão dos fatores de transcrição ZmDof1 e OsDof25 sobre a eficiência de uso de nitrogênio em Arabidopsis.
To improve nitrogen usage efficiency in plants the rice transcriptional factor OsDof25 was identified and cloned, whose probably orthologe is the maize ZmDof1, already identified and partially characterized. The ZmDof1 was also cloned for comparative analysis with OsDof25, in order to confirm this last one as ZmDof1 orthologe in rice. The constructions for A
Publicado em: 2009
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12. Influência de KlRox1p no metabolismo fermentativo de Kluyveromyces lactis / Influence of KlRox1p on fermentative metabolism of Kluyveromyces lactis
This work is a contribution to the studies about the role of KlRox1p in fermentative metabolism of Kluyveromyces lactis. Rox1p is known in Saccharomyces cerevisiae by repressing in aerobic conditions genes that are expressed when oxygen is limited. The kinetics growth of lineages of Kluyveromyces lactis MW270-7B and its derivative mutant K. lactis MW270- 7B
Publicado em: 2009