Results 31 to 40 of about 354,003 (282)

Étude optico-acoustique de la relaxation vibrationnelle de CH4(ν2, ν4) dans les chocs CH4-CH4 et CH4-monoatomiques

Journal de Physique, 1977
Les échanges collisionnels d'énergie entre les deux premiers niveaux (ν 2, ν4) de vibration de CH4 et les degrés de translation-rotation sont étudiés expérimentalement par la méthode du spectrophone. Le montage expérimental est décrit et les constantes de vitesse vibration-translation des niveaux ν2, ν 4 sont déterminées pour les collisions CH4-CH4 et ...
Huetz-Aubert, M., Lepoutre, F., Louis, G.   +2 more
openaire   +2 more sources

Widespread dominance of methane ebullition over diffusion in freshwater aquaculture ponds

Frontiers in Water, 2023
An ever-increasing demand for protein-rich food sources combined with dwindling wild fish stocks has caused the aquaculture sector to boom in the last two decades.
Renske J. E. Vroom, Sarian Kosten, Rafael M. Almeida, Raquel Mendonça, Ive S. Muzitano, Ive S. Muzitano, Icaro Barbosa, Jonas Nasário, Ernandes S. Oliveira Junior, Alexander S. Flecker, Nathan Barros   +10 more
doaj   +1 more source

Warming Effect from Soil Greenhouse Gas Emission of Each Mangrove Zone during the Dry Season in Ngurah Rai Forest Park, Bali, Indonesia

Environment and Natural Resources Journal
In addition to functioning as a carbon sink, mangrove soil also releases greenhouse gases (GHGs) through microbial metabolism. GHG flux fluctuates according to the ecological parameters of mangroves and climate variability.
I Putu Sugiana, Tri Prartono, Rastina, Alan Frendy Koropitan   +3 more
doaj   +1 more source

Suppression of methane uptake by precipitation pulses and long-term nitrogen addition in a semi-arid meadow steppe in northeast China

Frontiers in Plant Science, 2023
In the context of global change, the frequency of precipitation pulses is expected to decrease while nitrogen (N) addition is expected to increase, which will have a crucial effect on soil C cycling processes as well as methane (CH4) fluxes.
Weifeng Gao, Xu Yang, Yicong Zhang, Tianhang Zhao, Baoku Shi, Tianxue Yang, Tianxue Yang, Jianying Ma, Wanling Xu, Wanling Xu, Yining Wu, Wei Sun, Wei Sun   +12 more
doaj   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

Advanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller, Florian Kerber, Kirsten Moritz, Steffen Dudczig, Konstantin Kraushaar, Thomas Schemmel, Jana Hubálková, Patrick Gehre, Christos G. Aneziris   +8 more
wiley   +1 more source

Potential of Methane (CH4), Nitrogen (N2), and Carbon Dioxide (CO2) from Eco-Enzyme with the Addition of Cow Feces Starter

Biology, Medicine & Natural Product Chemistry
Eco-enzyme solutions are generally used in the manufacture of disinfectants, floor cleaners, liquid fertilizers, preservatives and others. In this study, eco-enzyme was used as the main ingredient in the manufacture of biogas fermentation with the ...
Marlina Kamelia, Aulia Ulmillah, Suci Wulan Pawhestri   +2 more
doaj   +1 more source

Nitrous oxide and methane in the Atlantic Ocean between 50 degrees North and 52 degrees South: Latitudinal distribution and sea-to-air flux [PDF]

, 2008
We discuss nitrous oxide (N2O) and methane (CH4) distributions in 49 vertical profiles covering the upper 300 m of the water column along two 13,500 km transects between 50°N and 52°S during the Atlantic Meridional Transect (AMT) programme (AMT cruises ...
Forster, Grant, Gist, Niki, Robinson, Carol, Uher, Gunther, Upstill-Goddard, Rob C., Woodward, E. Malcolm S.   +5 more
core   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Carbon dioxide and methane emission rates from taxi vehicles in Thailand

Carbon Management, 2018
Due to the expansion of urban areas have been increasing levels of greenhouse gas emissions from taxi and passenger cars that use natural gas for vehicles (NGV) and liquid petroleum gas (LPG) as alternative fuels .
Sutthicha Nilrit, Pantawat Sampanpanish, Surat Bualert   +2 more
doaj   +1 more source

Belowground changes to community structure alter methane-cycling dynamics in Amazonia

Environment International, 2020
Amazonian rainforest is undergoing increasing rates of deforestation, driven primarily by cattle pasture expansion. Forest-to-pasture conversion has been associated with increases in soil methane (CH4) emission.
Kyle M. Meyer, Andrew H. Morris, Kevin Webster, Ann M. Klein, Marie E. Kroeger, Laura K. Meredith, Andreas Brændholt, Fernanda Nakamura, Andressa Venturini, Leandro Fonseca de Souza, Katherine L. Shek, Rachel Danielson, Joost van Haren, Plinio Barbosa de Camargo, Siu Mui Tsai, Fernando Dini-Andreote, José M.S. de Mauro, Jos Barlow, Erika Berenguer, Klaus Nüsslein, Scott Saleska, Jorge L.M. Rodrigues, Brendan J.M. Bohannan   +22 more
doaj   +1 more source