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| Registros recuperados: 31 | |
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| Ismaili, Mm; Serve, L; Gadel, F; Lafite, R; Texier, H. |
| Three cruises on the Wight-Cherbourg transect were undertaken during the FluxManche II Programme in order to study the origin, nature and behaviour of organic matter inputs to the waters of the English Channel. Suspended particulate material (SPM) collected from surface and deep waters at each station was analysed at elemental level for Particulate Organic Carbon and Particulate Organic Nitrogen (POC, PON), at molecular level for main classes of organic compounds using Pyrolysis-Gas Chromatography coupled with Mass Spectrometry (Py-GC-MS) and for phenolic compounds, particularly lignin-derived phenols, using High Performance Liquid Chromatography (HPLC). The SPM content increases from the French (south) to the English coast (north) with the lowest values... |
| Tipo: Text |
Palavras-chave: Matière particulaire en suspension; Composés organiques; Marqueurs phénoliques; Biogéochimie; Manche; Suspended particulate matter; Organic compounds; Phenolic markers; Biogeochemistry; English Channel. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00325/43603/43922.pdf |
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| Konn, Cecile; Charlou, Jean-luc; Donval, Jean-pierre; Holm, Nils G.. |
| The analysis of the dissolved organic fraction of hydrothermal fluids has been considered a real challenge due to sampling difficulties, complexity of the matrix, numerous interferences and the assumed ppb concentration levels. The present study shows, in a qualitative approach, that Stir Bar Sorptive Extraction (SBSE) followed by Thermal Desorption - Gas Chromatography - Mass Spectrometry (TD-GC-MS) is suitable for extraction of small sample volumes and detection of a wide range of volatile and semivolatile organic compounds dissolved in hydrothermal fluids. In a case study, the technique was successfully applied to fluids from the Rainbow ultramafic-hosted hydrothermal field located at 36 degrees 14'N on the Mid-Atlantic Ridge (MAR). We show that... |
| Tipo: Text |
Palavras-chave: Sample preparation; Extraction; Organic compounds; Hydrothermal fluids; Ultramafic rocks. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00114/22514/20196.pdf |
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| OLIVEIRA, E. L. de; RODRIGUES, G. de S.; SANTIAGO, L. B.; SOUZA, H. A. de. |
| A compostagem se enquadra no processo biológico de reciclagem de nutrientes e surge como uma alternativa viável por reduzir o peso e o volume dos resíduos gerados. A compostagem é uma técnica de decomposição e sanitização da matéria orgânica à alta temperatura, pela ação de bactérias e fungos que transformam as carcaças em um produto útil, denominado de composto orgânico. Essa técnica é acessível ao produtor rural e as agroindústrias, tais como frigoríficos e abatedouros. O composto orgânico é um adubo que pode ser utilizado em áreas agrícolas, conforme Instrução Normativa nº 25 de 2009 do Ministério da Agricultura, Pecuária e Abastecimento, que trata da produção e do uso de compostos orgânicos. O uso de composto orgânico apresenta as vantagens de reduzir... |
| Tipo: Folhetos |
Palavras-chave: Resíduo de carcaça; Carcass utilization; Carcasses; Waste; Composto orgânico; Compostagem; Matéria orgânica; Decomposição; Manejo; Caprino; Ovino; Organic compounds; Composting; Organic matter; Degradation; Goats; Sheep. |
| Ano: 2015 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1019361 |
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| Regalado, E.L.; Laguna, A.; Martínez, J.R.. |
| Marine sponges (Porifera) have drawn the attention from a broad number of researchers all over the world. These animals and their simbionts are specialized in chemical warfare, producing biologically active chemical substances as an effective defense against predators. They have been considered a goldmine to chemists, from which have been discovered more than 6000 novel structures; many of them, with enormous biomedical applications, mainly against cancer, but also against bacteria, viruses and other diseases. Some of the sponge-derived drugs are available in the market, such as: Ara-A (antiviral) and Ara-C (anticancer), but there are diverse bioactive compounds under clinical trials. In Cuba, the researches related to the isolation of compounds from... |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Organic compounds; Antiparasitic agents. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4129 |
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| Registros recuperados: 31 | |
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