Results 21 to 30 of about 357,256 (297)

Spectrally-resolved UV photodesorption of CH4 in pure and layered ices [PDF]

, 2017
Context. Methane is among the main components of the ice mantles of insterstellar dust grains, where it is at the start of a rich solid-phase chemical network.
Aikawa, Andersson, Andersson, Baratta, Bennett, Bennett, Bertin, Bertin, Bertin, Boogert, Boogert, Boogert, Bossa, C. Romanzin, Cleeves, Cruz-Diaz, Cruz-Diaz, Cruz-Diaz, Dartois, Dartois, de Barros, Doronin, Fayolle, Fayolle, Fillion, G. Féraud, Gans, Garrod, Gredel, Grundy, Hama, Hassel, Himpsel, Hiraoka, Hodyss, Hodyss, Hollenbach, Hudson, J.-H. Fillion, Johns-Krull, Kaiser, Kalvans, Kameta, Koch, Kunz, L. Philippe, Lo, M. Bertin, M. Doronin, Maity, Martín-Doménech, Martín-Doménech, Mathis, Milligan, Mumma, Muñoz Caro, Nahon, P. Jeseck, R. Dupuy, Romanzin, Ruaud, Sakai, Smith, Smith, Tian, Wu, X. Michaut, Yuan, Öberg, Öberg, Öberg   +70 more
core   +2 more sources

Fabricating a Polysulfone-ZIF-8 Composite Membrane for Separating CO2 and CH4 [PDF]

Iranian Journal of Chemical Engineering
In this research, a mixed matrix membrane based on polysulfone and zinc nitrate-methylimidazole fillers was synthesized to improve the ability of the polymer membrane for the separation of CO2 and CH4.
Pouneh Ramezani, Omid Alizadeh, Masoud Mokhtary   +2 more
doaj   +1 more source

Focus on the impact of climate change on wetland ecosystem and carbon dynamics [PDF]

, 2016
The renewed growth in atmospheric methane (CH4)since 2007 after a decade of stabilization has drawn much attention to its causes and future trends. Wetlands are the single largest source of atmospheric CH4.
Christensen, Torben R., Frolking, Stephen E., Meng, Lei, Roulet, Nigel, Zhuang, Qianlai   +4 more
core   +2 more sources

Airborne observations of methane emissions from rice cultivation in the Sacramento Valley of California [PDF]

, 2012
Airborne measurements of methane (CH4) and carbon dioxide (CO2) were taken over the rice growing region of California's Sacramento Valley in the late spring of 2010 and 2011.
Andrews, AE, Atlas, EL, Blake, DR, Daube, BC, Dlugokencky, EJ, Fischer, ML, Goldstein, AH, Guha, A, Holloway, JS, Karl, T, Kofler, J, Kosciuch, E, Misztal, PK, Parrish, DD, Peischl, J, Perring, AE, Pollack, IB, Ryerson, TB, Santoni, GW, Schwarz, JP, Spackman, JR, Trainer, M, Wofsy, SC   +22 more
core   +1 more source

Methanogenesis exceeds CH4 consumption in eutrophic lake sediments

Limnology and Oceanography Letters, 2021
Lakes and reservoirs collectively contribute significant amounts of methane (CH4) to the global atmosphere. If CH4 production were not at least partially balanced by consumption (oxidation) in most of these systems, they could potentially emit an order ...
Sofia L. D'Ambrosio, John A. Harrison
doaj   +1 more source

Dominance of Diffusive Methane Emissions From Lowland Headwater Streams Promotes Oxidation and Isotopic Enrichment

Frontiers in Environmental Science, 2022
Inland waters are the largest natural source of methane (CH4) to the atmosphere, yet the contribution from small streams to this flux is not clearly defined.
Andrew L. Robison, Andrew L. Robison, Wilfred M. Wollheim, Clarice R. Perryman, Annie R. Cotter, Jessica E. Mackay, Ruth K. Varner, Paige Clarizia, Jessica G. Ernakovich   +8 more
doaj   +1 more source

Making plant methane formation visible—Insights from application of 13C‐labeled dimethyl sulfoxide

Plant-Environment Interactions, 2022
Methane (CH4) formation by vegetation has been studied intensively over the last 15 years. However, reported CH4 emissions vary by several orders of magnitude, thus making global estimates difficult. Moreover, the mechanism(s) for CH4 formation by plants
Moritz Schroll, Katharina Lenhart, Steffen Greiner, Frank Keppler   +3 more
doaj   +1 more source

Patents and Competition in the Automobile Industry [PDF]

, 1948
Methane (CH4) fluxes from world rivers are still poorly constrained, with measurements restricted mainly to temperate climates. Additional river flux measurements, including spatio-temporal studies, are important to refine extrapolations.
Ballester, Maria V. R., Bastviken, David, Krusche, Alex V., Richey, Jeffrey E., Sawakuchi, Andre O., Sawakuchi, Henrique O.   +5 more
core   +3 more sources

An experimental study on nonlinear seepage characteristics in coal seams during CH4 displacement through N2 and CO2 flooding

Meitian dizhi yu kantan
BackgroundCoal seams in China are generally characterized by low porosity (
Zefeng LI, Mengru HUANG, Hongzhong ZHANG, Jianping LAN, Jinsuo SONG, Shixing FAN   +5 more
doaj   +1 more source

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