Results 21 to 30 of about 592,816 (305)

Evaluation of Associative Effects of In Vitro Gas Production and Fermentation Profile Caused by Variation in Ruminant Diet Constituents

Methane, 2023
This study aimed to investigate the associative effects caused by changes in the proportions of feed ingredients (forage-to-concentrate ratio) and the forage source in ruminant diets on in vitro gas production and fermentation parameters.
Danielle F. Baffa, Tadeu S. Oliveira, Alberto M. Fernandes, Michelle G. Camilo, Ismael N. Silva, José R. Meirelles Júnior, Elon S. Aniceto   +6 more
doaj   +1 more source

The vertical transport of methane from different potential emission types on Mars [PDF]

, 2017
The contrasting evolutionary behavior of the vertical profile of methane from three potential release scenarios is analysed using a global circulation model with assimilated temperature profiles.
Atreya, Chassefière, Colaïtis, Conrath, Ehlmann, Fonti, Forget, Geminale, Holmes, J. A. Holmes, Lefèvre, Lewis, Lewis, M. R. Patel, Madeleine, Montabone, Mumma, Navarro, Newman, Oze, Priestley, S. R. Lewis, Steele, Stevens, Summers, Villanueva, Viscardy, Webster   +27 more
core   +1 more source

Anaerobic Digestion Remediation in Three Full-Scale Biogas Plants through Supplement Additions

Methane, 2023
Additives can improve the efficiency of anaerobic digestion by increasing biogas production, reducing air pollution, and preventing ammonia inhibition. Biological or chemical supplementation can also improve the economic efficiency of anaerobic digestion.
Eleni Anna Economou, Georgia Dimitropoulou, Nikoleta Prokopidou, Ioanna Dalla, Themistoklis Sfetsas   +4 more
doaj   +1 more source

TAP reactor investigation of methane coupling over samarium oxide catalysts [PDF]

, 1991
The adsorption and reaction characteristics of a Ba/Sr/Sm2O3 catalyst for methane coupling has been investigated using the TAP (Temporal Analysis of Products) reactor system. Pulsed adsorption experiments using methane, oxygen and krypton at temperatures
Fornasari, G., Gleaves, J.T., McNamara, D., Mills, P.L., Ross, J.R.H., Statman, D.J.   +5 more
core   +2 more sources

Methane and Nitrogen Abundances On Pluto and Eris [PDF]

, 2010
We present spectra of Eris from the MMT 6.5 meter telescope and Red Channel Spectrograph (5700-9800 angstroms; 5 angstroms per pix) on Mt. Hopkins, AZ, and of Pluto from the Steward Observatory 2.3 meter telescope and Boller and Chivens spectrograph ...
Brown, Brunetto, C. K. Maleszewski, D. E. Evans, D. M. Cornelison, F. Vilas, J. A. Burt, M. J. Bovyn, M. R. Abernathy, Merlin, Olkin, Prokhvatilov, S. C. Tegler, Schaller, Stansberry, W. M. Grundy, W. Romanishin, Z. Thompson   +17 more
core   +2 more sources

Tree-mediated methane emissions from tropical and temperate peatlands [PDF]

, 2012
Methane production and transport processes in peatlands are fairly well understood, but growing evidence for emission of methane through trees has highlighted the need to revisit methane transport processes.
Gauci, V., Gowing, D. J., Hornibrook, E. R. C., Pangala, S. R.   +3 more
core  

Pluto's lower atmosphere structure and methane abundance from high-resolution spectroscopy and stellar occultations [PDF]

, 2009
Context: Pluto possesses a thin atmosphere, primarily composed of nitrogen, in which the detection of methane has been reported. Aims: The goal is to constrain essential but so far unknown parameters of Pluto's atmosphere such as the surface pressure ...
A. Campargue, B. Sicardy, Brosch, Buie, C. de Bergh, Douté, E. Lellouch, Elliot, Elliot, Elliot, Fiorenza, Gao, H.-U. Käufl, Hubbard, Kaeufl, Lellouch, Lellouch, Olkin, S. Kassi, Sicardy, Stansberry, Stansberry, Stansberry, Strobel, Tryka, Yelle, Young, Young, Young   +28 more
core   +6 more sources

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Brittleness evaluation of main coal seams in Permian Taiyuan-Shanxi formations, Baode block, Ordos Basin: based on a convolutional neural network method

Shiyou shiyan dizhi
The coal seams of the Permian Taiyuan-Shanxi formations in the Baode block of the northeastern margin of the Ordos Basin have abundant coalbed methane resources.
Qingfeng ZHANG, Ziling LI, Jikun ZHANG, Shuai HAO, Xiaoguang SUN, Yanjie SHANG, Yun ZUO   +6 more
doaj   +1 more source

Planktonic and sediment-associated aerobic methanotrophs in two seep systems along the North American margin [PDF]

, 2008
Methane vents are of significant geochemical and ecological importance. Notable progress has been made towards understanding anaerobic methane oxidation in marine sediments, however, the diversity and distribution of aerobic methanotrophs in the water ...
Orphan, Victoria J., Tavormina, Patricia L., Ussler, William, III   +2 more
core   +4 more sources