Results 11 to 20 of about 464,250 (225)

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

open access: yesMethane, 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   +6 more
doaj   +1 more source

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

open access: yesMethane, 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   +4 more
doaj   +1 more source

Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions

open access: yesMethane, 2023
Here, Pd nanoparticles supported on ZnO were prepared by the alcohol-reduction and the borohydride-reduction methods, and their efficiency towards the photocatalytic conversion of methane under mild conditions were evaluated.
Arthur Pignataro Machado   +5 more
doaj   +1 more source

Research on support vector machine method for comprehensive evaluation after compression [PDF]

open access: yesE3S Web of Conferences, 2020
Hydraulic fracturing is one of the important measures to increase production of oil and gas reservoirs. Pressure after the assessment of the existing technology is usually divided into direct and indirect diagnosis of hydraulic fracture. The diversity of
Chengwang Wang   +3 more
doaj   +1 more source

Hydrophobic zeolite modification for in situ peroxide formation in methane oxidation to methanol

open access: yesScience, 2020
Confining peroxide to make methanol In principle, hydrogen peroxide would be an efficient oxidant for the conversion of methane to methanol under mild conditions.
Zhu Jin   +10 more
semanticscholar   +1 more source

Moderate D/H Ratios in Methane Ice on Eris and Makemake as Evidence of Hydrothermal or Metamorphic Processes in Their Interiors: Geochemical Analysis [PDF]

open access: yes, 2023
Dwarf planets Eris and Makemake have surfaces bearing methane ice of unknown origin. D/H ratios were recently determined from James Webb Space Telescope (JWST) observations of Eris and Makemake, giving us new clues to decipher the origin of methane. Here, we develop geochemical models to test if the origin of methane could be primordial, derived from ...
arxiv   +1 more source

The Global Methane Budget 2000–2017

open access: yesEarth System Science Data, 2016
. Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of CH4 continue to increase, making CH4 the second most important human ...
M. Saunois   +90 more
semanticscholar   +1 more source

Selective photocatalytic oxidation of methane by quantum-sized bismuth vanadate

open access: yesNature Sustainability, 2021
The direct oxidation of methane to more desirable, one-carbon oxygenated molecules such as methanol and formaldehyde offers a pathway towards a more sustainable chemical industry as the current commercial reforming process involving two steps features a ...
Yingying Fan   +8 more
semanticscholar   +1 more source

The Case and Context for Atmospheric Methane as an Exoplanet Biosignature [PDF]

open access: yesPNAS 119, 14, 1-10 (2022), 2022
Methane has been proposed as an exoplanet biosignature. Imminent observations with the James Webb Space Telescope may enable methane detections on potentially habitable exoplanets, so it is essential to assess in what planetary contexts methane is a compelling biosignature.
arxiv   +1 more source

Optimization of drilling system for CBM horizontal wells in Zhengzhuang Block of Qinshui Basin

open access: yesMeitan kexue jishu, 2023
Zhengzhuang block is located in the southwest of Qinshui Basin. The main gas producing horizons are No.3 coal of Shanxi Formation and No.15 coal of Taiyuan formation. The occurrence characteristics and gas bearing properties of coal seams in the area are
Guishan LI   +4 more
doaj   +1 more source

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