Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 11
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Alcohols as a Means to Inhibit the Formation of Precipitates in Blends of Biodiesel and Fossil Diesel Fuel CIGR Journal
Munack, Axel; Schmidt, Lasse; Schröder, Olaf; Schaper, Kevin; Pabst, Christoph; Krahl, Jürgen; ,.
The European diesel fuel specification limits the biodiesel content to 7 %. It is, however, desirable to increase the amount of renewables in the transport sector; therefore blending with a higher biogenic fuel content is of interest. Blending of fuels can lead to chemical reactions between fuel components and may result in undesired products. In detail, aged biodiesel from unsaturated FAME and fossil diesel fuels can form oligomers and precipitations with a maximum in the range of B10 to B20. Precursors are oligomers that can be separated from the biodiesel or the blends in an amount of up to 20 %. These oligomers seem to have potency for chemical reactions with fuel components or the engine oil. To prevent tentative problems in the fuel filter, the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alcohol; Biodiesel; Emission; Oligomer; Precipitate; Germany.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3082
Imagem não selecionada

Imprime registro no formato completo
Methane emissions from ruminants in integrated crop-livestock systems. Repositório Alice
PONTES, L. da S.; BARRO, R. S.; CAMARGO, E. F. de; PORFIRIO-DA-SILVA, V.; CEZIMBRA, I. M.; BERNDT, A.; BAYER, C.; CARVALHO, P. C. de F..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Gás metano; Emissão; Gás de efeito estufa; Sistemas de integração lavoura-pecuária; Methane; Emission; Greenhouse gas; Grasses.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1001117
Imagem não selecionada

Imprime registro no formato completo
Methane emissions from ruminants in integrated crop-livestock systems. Repositório Alice
PONTES, L. da S.; BARRO, R. S.; CAMARGO, E. F. de; PORFIRIO-DA-SILVA, V.; CEZIMBRA, I. M.; BERNDT, A.; BAYER, C.; CARVALHO, P. C. de F..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Gás metano; Emissão; Gás de efeito estufa; Sistemas de integração lavoura-pecuária; Methane; Emission; Greenhouse gas; Grasses.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1005347
Imagem não selecionada

Imprime registro no formato completo
Mimicking Indoor Climate Dynamics and Ammonia Emissions in a Pig Housing Compartment Using Artificial Pigs and an Automatic Urea Spraying Installation CIGR Journal
Tabase, Raphael Kubeba.
The study aims to develop a test platform (TP) compartment that could mimic diurnal variations in indoor climate and NH3 emission in a real pig compartment and to compare diurnal indoor climate and NH3 production between two TP compartments and a real compartment. The objectives were achieved by using a real and TP compartment followed by an ad hoc test that used two TP compartments and another real compartment. The TP had two compartments equipped with mock-up pigs as heat source and automatic urea solution spraying installation to mimic pig urination at the pen floor. The study evaluated indoor climate and NH3 production in a 4-day comparative test between a TP and a real compartment followed by a 3-day comparative test between two TP compartments and a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonia; Emission; Modeling; Pig housing; Test platform; Ventilation; Belgium.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5216
Imagem não selecionada

Imprime registro no formato completo
NO AND N2O FLUXES FROM A BELGIAN FOREST AFFECTED BY ELEVATED NITROGEN DEPOSITION Gayana Botánica
Boeckx,Pascal; Vervaet,Hilde; Cleemput,Oswald van.
Nitrous oxide (N2O) and nitric oxide (NO) are important atmospheric trace gases, and soils (including forest soils) are a substantial source of both gases. In forests subjected to elevated N deposition these emissions are considered as indirect emissions from agricultural N sources (mainly NH3) or combustion (e.g. NOx from traffic). However, knowledge about N2O and NO exchange between forests and the atmosphere is scarce. The aim of this study was to determine N2O and NO emission rates from a deciduous forest in Belgium, receiving a high N-deposition (ca. 40 kg N ha-1 yr-1). In April 2000, the NO emission from the forested location was 17.3 (± 1.2) and 17.05 (± 0.7) ng NO-N m-2 s-1, respectively, for the soil including the organic layer and the mineral...
Tipo: Journal article Palavras-chave: Emission; Forest soil; Nitrogen; Cycling; Nitric oxide; Nitrous oxide.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432005000200003
Imagem não selecionada

Imprime registro no formato completo
REGULATING ENVIRONMENTAL THREATS AgEcon
Tsur, Yacov; Zemel, Amos.
Environmental consequences of natural resource exploitation often entail threats of future occurrences of detrimental abrupt events rather than (or in addition to) inflicting a damage gradually. The possibility of abrupt occurrence of climate-change related calamities is a case in mind. The uncertainty associated with the realization of these threats and their public-bad nature complicate the determination of optimal economic response. We analyze the regulation of such environmental threats by means of a Pigouvian hazard tax, based on the shadow cost of the hazard-generating activities. A numerical example illustrates possible effects of the proposed regulation scheme.
Tipo: Working or Discussion Paper Palavras-chave: Environmental events; Emission; Climate change; Regulation; Pigouvian tax; Hazard rate; Uncertainty; Environmental Economics and Policy; H23; H41; O13; Q54; Q58.
Ano: 2006 URL: http://purl.umn.edu/7150
Imagem não selecionada

Imprime registro no formato completo
The emissivity of foam-covered water surface at L-band: Theoretical modeling and experimental results from the frog 2003 field experiment ArchiMer
Camps, A; Vall-ilossera, M; Villarino, R; Reul, Nicolas; Chapron, Bertrand; Corbella, I; Duffo, N; Torres, F; Miranda, Jj; Sabia, R; Monerris, A; Rodriguez, R.
Sea surface salinity can be measured by microwave radiometry at L-band (1400-1427 MHz). This frequency is a compromise between sensitivity to the salinity, small atmospheric perturbation, and reasonable pixel resolution. The description of the ocean emission depends on two main factors: 1) the sea water permittivity, which is a function of salinity, temperature, and frequency, and 2) the sea surface state, which depends on the wind-induced wave spectrum, swell, and rain-induced roughness spectrum, and by the foam coverage and its emissivity. This study presents a simplified two-layer emission model for foam-covered water and the results of a controlled experiment to measure the foam emissivity as a function of salinity, foam thickness, incidence angle, and...
Tipo: Text Palavras-chave: Brightness temperature; Emission; Foam; Microwave radiometry; Salinity; Sea.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/00000/10940/9268.pdf
Imagem não selecionada

Imprime registro no formato completo
The role of cattle genetically efficient in feed utilisation in an Australian carbon trading environment AgEcon
Arthur, Paul F.; Herd, Robert M.; Basarab, John A..
Special Edition Sheep and Cattle Production in New South Wales
Tipo: Article Palavras-chave: Feed efficiency; Residual feed intake; Methane; Greenhouse gas; Emission; Beef cattle; Farm Management.
Ano: 2011 URL: http://purl.umn.edu/121457
Imagem não selecionada

Imprime registro no formato completo
รอยเท้าคาร์บอนจากระบบการปลูกข้าวที่สำคัญของประเทศไทย: การวัดการปลดปล่อยก๊าซมีเทนจากนาข้าวในประเทศไทย Thai Agricultural
Benjamas Rossopa; Chitnucha Buddhaboon; Kingkaew Kunket; Waraporn Wongboon; Apiwat Hantanapong; Samran Inthaleang; Noppadol Prayoonsuk.
Measurement of methane emission from rice production systems is a methodology for data collection of Carbon Footprint from rice production system. Four major rice production systems were defined for methane emission measurement in 2012, including upland rice, rainfed rice, irrigated rice with Good Agricultural Practices (GAP) and irrigated rice with alternative wet and dry (AWD). Gas samples were taken one week interval and analyzed with Gas Chromatograph; GC-8A as soon as possible after collection. Results found that upland rice could absorb CH4 at the rate of 0.028 kg methane ha-1season-1 whereas rainfed rice production system in Northeast Thailand emitted CH4 at the rate of 85.26 kg rai-1season-1 under transplanting and 51.64 kg rai-1 season-1 under...
Tipo: PhysicalObject Palavras-chave: Rice; Production; Greenhouse effect; Emission; Carbon footprint; Global warming; ข้าว; ระบบการปลูกข้าว; ก๊าซเรือนกระจก; การปลดปล่อยก๊าซ; รอยเท้าคาร์บอน; สภาวะโลกร้อน; ก๊าซมีเทน; นาข้าว; ประเทศไทย.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5445
Imagem não selecionada

Imprime registro no formato completo
รอยเท้าคาร์บอนจากระบบการปลูกข้าวที่สำคัญของประเทศไทย: ย้อนรอยการวัดการปลดปล่อยก๊าซมีเทนจากนาข้าวในประเทศไทย Thai Agricultural
Benjamas Rossopa; Chitnucha Buddhaboon; Kingkaew Kunket; Waraporn Wongboon; Apiwat Hantanapong; Samran Inthaleang; Noppadol Prayoonsuk.
Measurement of methane emission from rice production systems is a methodology for data collection of Carbon Footprint from rice production system. Four major rice production systems were defined for methane emission measurement in 2012, including upland rice, rainfed rice, irrigated rice with good agricultural practices (GAP) and irrigated rice with alternative wet and dry (AWD). Gas samples were taken one week interval and analyzed by Gas Chromatograph; GC-8A as soon as possible after collection. The research found that upland rice could absorb CH4 at the rate of 0.176 kg methane rai-1 season-1. Rainfed rice production system in Northeast Thailand emitted CH4 at the rate of 85.26 kg rai-1 season-1 under transplanting and 51.64 kg rai-1 season-1 under...
Tipo: PhysicalObject Palavras-chave: Carbon footprint; Emission; Rice production; Rice; Greenhouse gas; Irrigated rice; Rainfed rice; Upland rice; Methane emission; Good agricultural practices; CH4; Climatic factors; รอยเท้าคาร์บอน; การปลดปล่อยก๊าซมีเทน; การผลิตข้าว; ข้าว; ก๊าซเรือนกระจก; นาชลประทาน; นาน้ำฝน; นาที่สูง; ระบบนาข้าว; การจัดการแบบเกษตรดีที่เหมาะสม; การดูดซับก๊าซมีเทน; นาไร่; นาขั้นบันได; คาร์บอนไดออกไซด์; ก๊าซมีเทน.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5714
Imagem não selecionada

Imprime registro no formato completo
รอยเท้าคาร์บอนและการลดการปลดปล่อยคาร์บอนในระบบการปลูกข้าวที่สำคัญของประเทศไทย: การปลดปล่อยก๊าซมีเทนจากนาข้าว Thai Agricultural
Chitnucha Buddhaboon; Benjamas Rossopa; Kingkaew Kunket; Waraporn Wongboon; Apiwat Hantanapong; Samran Nthaleang.
Measurement of methane emission from major rice production systems is a methodology for data collection of carbon footprint from rice production system. Five major rice production systems were defined for methane emission measurement in 2011 rainy season, including upland rice, rainfed rice, irrigated rice, good agricultural practices (GAP) rice production, and organic rice. Gas samples were taken at one week interval and analyzed by Gas Chromatograph, GC-8A as soon as possible after collection. The research found that upland rice could absorb CH4 at the rate of 90 tons per crop equivalent to 2,258 of CO2. Rainfed rice production system occupied most of rice area in Thailand emitted CH4 at the rate of 58,127 tons per crop equivalent to 1,453,180 tons...
Tipo: PhysicalObject Palavras-chave: Rice; Carbon footprint; Emission; Rice production system; Rice greenhouse gas; ข้าว; รอยเท้าคาร์บอน; การปลดปล่อยก๊าซ; ระบบการผลิตข้าว; ก๊าซเรือนกระจก; นาข้าว.
Ano: 2012 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5229
Registros recuperados: 11
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional