Results 21 to 30 of about 508,769 (269)

An Improved Scheme of Frequency-Dependent AVO Inversion Method and Its Application for Tight Gas Reservoirs

open access: yesGeofluids, 2019
AVO inversion is a seismic exploration methodology used to predict the earth’s elastic parameters and thus rocks and fluid properties. It is built up on elastic theory and does not consider the seismic dispersion in real strata.
Jiong Liu   +4 more
doaj   +1 more source

On Lithium-6 as a Diagnostic of the Lithium-enrichment Mechanism in Red Giants [PDF]

open access: yesThe Astrophysical Journal Letters, 2020
Abstract High lithium-7 (7Li) abundances in giants are indicative of nonstandard physical processes affecting the star. Mechanisms that could produce this signature include contamination from an external source, such as planets, or internal production and subsequent mixing to the stellar surface. However, distinguishing between different
Claudia Aguilera-Gómez   +2 more
openaire   +3 more sources

Pyrite type and its effect on shale gas accumulation: a case study of Wufeng-Longmaxi shale in Sichuan Basin and its periphery

open access: yesShiyou shiyan dizhi, 2020
Pyrite is one of the most common minerals in shale, but its type, genesis and effect on shale gas accumulation are still in the initial study stage.
Guangrong ZHANG   +5 more
doaj   +1 more source

Shared and distinct mechanisms in deriving linguistic enrichment [PDF]

open access: yesJournal of Memory and Language, 2016
AbstractMeanings of basic expressions can be enriched by considering what the speaker could have said, but chose not to, that is, the alternatives. We report three priming experiments that test whether there are shared enrichment mechanisms across a diverse range of linguistic categories.
Bott, Lewis, Chemla, Emmanuel
openaire   +1 more source

An astrophysically-relevant mechanism for amino acid enantiomer enrichment

open access: yesChemical Communications, 2007
The sublimation of low ee amino acids was examined while exploring simple mechanisms by which high ee amino acids can be generated under conditions that exist in space; significant enantioenrichment of a variety of amino acids by sublimation was achieved.
Fletcher, S, Jagt, R, Feringa, B
openaire   +4 more sources

Drug mechanism enrichment analysis improves prioritization of therapeutics for repurposing

open access: yesBMC Bioinformatics, 2022
ABSTRACT BACKGROUND There is a pressing need for improved methods to identify effective therapeutics for disease. Many computational approaches have been developed to repurpose existing drugs to meet this need.
Belinda B. Garana   +4 more
openaire   +3 more sources

Application of gas wettability alteration to improve methane drainage performance: A case study

open access: yesInternational Journal of Mining Science and Technology, 2021
Hydraulic fracturing technique is widely used for methane drainage and has achieved good effects in numerous coal mines, but negative effects may occur as the fracturing fluids are absorbed into the coal seam.
Lin Jia   +4 more
doaj   +1 more source

Enriched continuum for multi-scale transient diffusion coupled to mechanics [PDF]

open access: yesAdvanced Modeling and Simulation in Engineering Sciences, 2020
AbstractIn this article, we present a computationally efficient homogenization technique for linear coupled diffusion–mechanics problems. It considers a linear chemo-mechanical material model at the fine scale, and relies on a full separation of scales between the time scales governing diffusion and mechanical phenomena, and a relaxed separation of ...
Abdullah Waseem   +4 more
openaire   +5 more sources

Theoretical understanding and technical practice of shale oil development in continental faulted basins in eastern China: A case study of Jiyang shale oil

open access: yesYouqi dizhi yu caishoulu
The shale oil in the continental faulted basins in eastern China,represented by Jiyang shale oil,has made a breakthrough in production capacity. However,Jiyang shale oil faces great challenges in achieving high and stable production due to the large ...
YANG Yong   +9 more
doaj   +1 more source

Research on the Rate of Penetration Prediction Method Based on Stacking Ensemble Learning

open access: yesGeofluids, 2023
ROP is an important index to evaluate the efficiency of oil and gas drilling. In order to accurately predict the ROP of an oilfield in Xinjiang working area, a ROP prediction model based on the historical drilling data of this working area was ...
Yangfeng Ren   +6 more
doaj   +1 more source

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