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Registro Completo |
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
16/01/2015 |
Data da última atualização: |
16/01/2015 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
GALLI, V.; MESSIAS, R. da S.; SILVA, S. D. dos A. e; MARGIS, R. |
Afiliação: |
Vanessa Galli, UFRGS; Rafael da Silva Messias, UFRGS; SERGIO DELMAR DOS ANJOS E SILVA, CPACT; Rogério Margis, UFRGS. |
Título: |
De novo assembly of tung tree seeds transcriptome. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
In: SIMPÓSIO ESTADUAL DE AGROENERGIA; REUNIÃO TÉCNICA DE AGROENERGIA - RS, 5.; ENCONTRO DE ENERGIAS RENOVÁVEIS NA AGRICULTURA FAMILIAR, 2., Pelotas, 2014. Anais... Pelotas: Embrapa Clima Temperado, 2014. 1 pen card. |
Idioma: |
Inglês |
Thesaurus Nal: |
seeds. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/115733/1/079.pdf
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Marc: |
LEADER 00601nam a2200145 a 4500 001 2005830 005 2015-01-16 008 2014 bl uuuu u00u1 u #d 100 1 $aGALLI, V. 245 $aDe novo assembly of tung tree seeds transcriptome.$h[electronic resource] 260 $aIn: SIMPÓSIO ESTADUAL DE AGROENERGIA; REUNIÃO TÉCNICA DE AGROENERGIA - RS, 5.; ENCONTRO DE ENERGIAS RENOVÁVEIS NA AGRICULTURA FAMILIAR, 2., Pelotas, 2014. Anais... Pelotas: Embrapa Clima Temperado, 2014. 1 pen card.$c2014 650 $aseeds 700 1 $aMESSIAS, R. da S. 700 1 $aSILVA, S. D. dos A. e 700 1 $aMARGIS, R.
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Embrapa Clima Temperado (CPACT) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
10/08/2011 |
Data da última atualização: |
10/08/2011 |
Autoria: |
DELBEN, J. R. J.; CANDELORIO, P. D.; OLIVEIRA, F. F. DE; SPONTONI, T. A.; DELBEN, A. A. S. T.; COELHO, M. de B.; ANDRADE, L. H. C. |
Afiliação: |
J. R. J. Delben, UFMS; P. D. Candelorio, UFMS; F. F. de Oliveira, UFMS; T. A. Spontoni, UFMS; Angela A. S. T. Delben, UFMS; MARLENE DE BARROS COELHO, CNPGC; L. H. C. Andrade, UFMS. |
Título: |
Vacuum pyrolysis of Astronium urundeuva. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Journal of Thermal Analysis and Calorimetry, v. 93, n.3, p. 915-919, 2008. |
Idioma: |
Inglês |
Conteúdo: |
Currently, there are ecological and energy crises due to the increasing demand for industrialized products and personal comfort (thermal conditioning, alimentary needs, transport demand, etc.). The consumption of fossil energy sources (coal and oil) is significant considering depleting supplies. In underdeveloped countries, native forest territory is being lost as the original forest biomass is consumed and agricultural land borders expand. The release of pollutant carbon into the atmosphere is increasing; this carbon was previously fixed in wood, oil beds and native forest. Meanwhile, the fossil reserves will be depleted in a few decades. Due to this situation, petroleum natural gas (PNG) is beginning to be used intensely worldwide, in the past it was released into the atmosphere. The development of cheap materials for large-scale permanent fixation of carbon, while adsorbing PNG for storage and transport, is desired. There are three options for storing PNG: ? the use of appropriate solvent; its drawback is the low solubility of the methane, requiring high pressures [1] ? the inclusion of composites [2]; its disadvantage is the low storage capacity ? the adsorption in porous materials [3?8]; that is the most promising mechanism ? A lot of research is focused on the development of microporous adsorbers with a large superficial area, high packing density and good mass and heat transfer properties [9, 10]. The best choice so far is activated charcoal acting as an adsorber. Such a system can store PNG at moderate pressures (3.5 MPa), compared with the high pressures (20 MPa) required for natural gas compression [11]. Its storage capacity is in the range of 300?700 Kg m?3, with the adsorbed/adsorbent volume rate varying from 101 to 172 V/V, whereas the ideal rate is around 150 V/V [4, 5, 7, 12?17]. The pyrolysis of vegetal organics is a common process for activating carbon. The activation of carbon can occur in some environments, such as vacuum, steam, and CO2, with different results on the microporosity lacking meso- and macroporosity. The maximization of the superficial area and adsorption capacity of the activated charcoal is still under study [18?20]. In this work, the pyrolysis of the Aroeira (Astronium Urundeuva), a wood of the Middle West Brazilian Biome, is presented. The samples were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). MenosCurrently, there are ecological and energy crises due to the increasing demand for industrialized products and personal comfort (thermal conditioning, alimentary needs, transport demand, etc.). The consumption of fossil energy sources (coal and oil) is significant considering depleting supplies. In underdeveloped countries, native forest territory is being lost as the original forest biomass is consumed and agricultural land borders expand. The release of pollutant carbon into the atmosphere is increasing; this carbon was previously fixed in wood, oil beds and native forest. Meanwhile, the fossil reserves will be depleted in a few decades. Due to this situation, petroleum natural gas (PNG) is beginning to be used intensely worldwide, in the past it was released into the atmosphere. The development of cheap materials for large-scale permanent fixation of carbon, while adsorbing PNG for storage and transport, is desired. There are three options for storing PNG: ? the use of appropriate solvent; its drawback is the low solubility of the methane, requiring high pressures [1] ? the inclusion of composites [2]; its disadvantage is the low storage capacity ? the adsorption in porous materials [3?8]; that is the most promising mechanism ? A lot of research is focused on the development of microporous adsorbers with a large superficial area, high packing density and good mass and heat transfer properties [9, 10]. The best choice so far is activated charcoal acting as an adsorber. Suc... Mostrar Tudo |
Palavras-Chave: |
Pirólise. |
Thesagro: |
Aroeira; Astronium Urundeuva; Madeira. |
Categoria do assunto: |
W Química e Física |
Marc: |
LEADER 03174naa a2200241 a 4500 001 1897692 005 2011-08-10 008 2008 bl uuuu u00u1 u #d 100 1 $aDELBEN, J. R. J. 245 $aVacuum pyrolysis of Astronium urundeuva.$h[electronic resource] 260 $c2008 520 $aCurrently, there are ecological and energy crises due to the increasing demand for industrialized products and personal comfort (thermal conditioning, alimentary needs, transport demand, etc.). The consumption of fossil energy sources (coal and oil) is significant considering depleting supplies. In underdeveloped countries, native forest territory is being lost as the original forest biomass is consumed and agricultural land borders expand. The release of pollutant carbon into the atmosphere is increasing; this carbon was previously fixed in wood, oil beds and native forest. Meanwhile, the fossil reserves will be depleted in a few decades. Due to this situation, petroleum natural gas (PNG) is beginning to be used intensely worldwide, in the past it was released into the atmosphere. The development of cheap materials for large-scale permanent fixation of carbon, while adsorbing PNG for storage and transport, is desired. There are three options for storing PNG: ? the use of appropriate solvent; its drawback is the low solubility of the methane, requiring high pressures [1] ? the inclusion of composites [2]; its disadvantage is the low storage capacity ? the adsorption in porous materials [3?8]; that is the most promising mechanism ? A lot of research is focused on the development of microporous adsorbers with a large superficial area, high packing density and good mass and heat transfer properties [9, 10]. The best choice so far is activated charcoal acting as an adsorber. Such a system can store PNG at moderate pressures (3.5 MPa), compared with the high pressures (20 MPa) required for natural gas compression [11]. Its storage capacity is in the range of 300?700 Kg m?3, with the adsorbed/adsorbent volume rate varying from 101 to 172 V/V, whereas the ideal rate is around 150 V/V [4, 5, 7, 12?17]. The pyrolysis of vegetal organics is a common process for activating carbon. The activation of carbon can occur in some environments, such as vacuum, steam, and CO2, with different results on the microporosity lacking meso- and macroporosity. The maximization of the superficial area and adsorption capacity of the activated charcoal is still under study [18?20]. In this work, the pyrolysis of the Aroeira (Astronium Urundeuva), a wood of the Middle West Brazilian Biome, is presented. The samples were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). 650 $aAroeira 650 $aAstronium Urundeuva 650 $aMadeira 653 $aPirólise 700 1 $aCANDELORIO, P. D. 700 1 $aOLIVEIRA, F. F. DE 700 1 $aSPONTONI, T. A. 700 1 $aDELBEN, A. A. S. T. 700 1 $aCOELHO, M. de B. 700 1 $aANDRADE, L. H. C. 773 $tJournal of Thermal Analysis and Calorimetry$gv. 93, n.3, p. 915-919, 2008.
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