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| Registros recuperados: 108 | |
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| Vieira,Simone Aparecida; Alves,Luciana Ferreira; Aidar,Marcos; Araújo,Luciana Spinelli; Baker,Tim; Batista,João Luís Ferreira; Campos,Mariana Cruz; Camargo,Plinio Barbosa; Chave,Jerome; Delitti,Welington Braz Carvalho; Higuchi,Niro; Honorio,Euridice; Joly,Carlos Alfredo; Keller,Michael; Martinelli,Luiz Antonio; Mattos,Eduardo Arcoverde de; Metzker,Thiago; Phillips,Oliver; Santos,Flavio Antonio Maes dos; Shimabukuro,Mônica Takako; Silveira,Marcos; Trumbore,Susan Elizabeth. |
| The main objective of this paper is to present and discuss the best methods to estimate live above ground biomass in the Atlantic Forest. The methods presented and conclusions are the products of a workshop entitled "Estimation of Biomass and Carbon Stocks: the Case of Atlantic Rain Forest". Aboveground biomass (AGB) in tropical forests is mainly contained in trees. Tree biomass is a function of wood volume, obtained from the diameter and height, architecture and wood density (dry weight per unit volume of fresh wood). It can be quantified by the direct (destructive) or indirect method where the biomass quantification is estimated using mathematical models. The allometric model can be site specific when elaborated to a particular ecosystem or general that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Above-ground biomass; Allometric model; Carbon; Mata Atlântica. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000200001 |
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| Carmo,Janaina Braga; Urzedo,Danilo Ignácio de; Ferreira Filho,Pedro José; Pereira,Elisabete Alves; Pitombo,Leonardo Machado. |
| This study aimed to quantify the carbon dioxide emissions from an Oxisol under degraded pasture located in Sorocaba, São Paulo State, Brazil. The treatments were: sewage sludge (LE), sewage sludge compost (CLE), mineral fertilizer (AM) and no fertilization (T0). The experiment was conducted in a completely randomized block design with analysis of the effect of the four treatments (CLE, LE, and AM T0) with four replications. The application of sewage sludge, sewage sludge compost, mineral fertilizer and no fertilizer was statistically significant for the variables of height increase and stem height of Guanandi seedlings (Calophyllum brasiliense Cambessèdes - Calophyllaceae). Treatments showed significant differences in terms of CO2 emissions from soil. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: GHG; Organic waste; Carbon. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000300012 |
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| Fonseca,Adriel Ferreira da; Herpin,Uwe; Dias,Carlos Tadeu dos Santos; Melfi,Adolpho José. |
| In this study, an experiment under controlled conditions was carried out to determine the effects of secondary-treated sewage effluent (STSE) application on soil nitrogen concentrations (mineral and total), total carbon and soil pH. The soil and STSE used were collected at Lins, São Paulo State, Brazil. A completely randomized design was used, in completed factorial 4x11 (weekly application rates of 0, 100, 150 and 200 mL STSE per kg soil; and, eleven soil incubation periods from 0 to 10 weeks) with four replicates. The STSE was applied simulating common surface irrigation. Seven days after each incubation period, ammonium and nitrate contents were determined. Additionally, pH and total carbon and nitrogen contents were measured in the soil after 10 weeks.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Treated sewage effluent; Nitrogen; Carbon; Tropical soil. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000500001 |
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| Oliveira,I.C.; Brenner,E.; Chiu,J.; Hsieh,M.-H.; Kouranov,A.; Lam,H.-M.; Shin,M.J.; Coruzzi,G.. |
| We are using molecular, biochemical, and genetic approaches to study the structural and regulatory genes controlling the assimilation of inorganic nitrogen into the amino acids glutamine, glutamate, aspartate and asparagine. These amino acids serve as the principal nitrogen-transport amino acids in most crop and higher plants including Arabidopsis thaliana. We have begun to investigate the regulatory mechanisms controlling nitrogen assimilation into these amino acids in plants using molecular and genetic approaches in Arabidopsis. The synthesis of the amide amino acids glutamine and asparagine is subject to tight regulation in response to environmental factors such as light and to metabolic factors such as sucrose and amino acids. For instance, light... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Carbon; Ammonium; Nitrogen assimilation; Gene expression; Arabidopsis thaliana. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000500003 |
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| Tanseer,Sundas; Anjum,Tehmina. |
| Most of the studies regarding cyclosporin 'A' production through fungi concentrate around Tolypocladium inflatum. This is mainly due to lower reported production of this drug in other fungi. The present study was therefore conducted to explore indigenous isolates of Aspergillus terreus for synthesis of this drug and defining a production medium for obtaining high yield of cyclosporin 'A'. For this purpose carbon and nitrogen sources were optimized for the selected best strain of A. terreus. Overall results depicted that the best cyclosporin 'A' yield from selected Aspergillus terreus (FCBP58) could be obtained by using production medium containing glucose 10% as carbon source and peptone 0.5% as nitrogen source. This modification in production medium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus terreus; Cyclosporin 'A'; Carbon; Nitrogen. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400019 |
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| Registros recuperados: 108 | |
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