Results 21 to 30 of about 1,480 (167)

A method for measuring surface diffusion coefficient of coal-adsorbed gas using a differential pressure permeation method

Meitan xuebao
The surface diffusion behavior of coal-adsorbed gas is difficult to measure and quantitatively characterize, which has always been a problem or difficulty in the study of the migration law of coalbed methane (coal mine gas).
Shiqiang CHEN, Yugui ZHANG, Mingjie ZHANG, Jiangwei YAN, Cao LIU, Donghui LI, Guangshan SHI   +6 more
doaj   +1 more source

Discrete fracture model with unsteady-state adsorption and water–gas flow for shale-gas reservoirs

Energy Reports, 2023
A shale-gas reservoir possesses many complex characteristics, including coexisting free and adsorbed gases, a complex distribution of fractures, and the existence of movable water in these fractures.
Bin Chang, Cheng Cao, Yunde Zhang, Baofeng Lan   +3 more
doaj   +1 more source

Model Optimization of Shale Gas Reservoir Volume Fracturing Dissolved Gas Simulation Adsorbed Gas

Geofluids, 2021
Shale reservoirs have some natural fractures with a certain density and connectivity. The basic percolation model of shale gas reservoir: the black oil model of gas-water phase is used as the basic model, and the dissolved gas is used to simulate ...
Hao Dong, Yi Zhang, Zongwu Li, Chao Jiang, Jiaze Li, Tao Wu, Liting Wang, Chuangjiang Wang, Hao Wang, Fujing Li, Qian Ru   +10 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Experimental and theoretical study on the dynamic effective stress of loaded gassy coal during gas release

International Journal of Mining Science and Technology, 2023
In the process of mining coalbed methane (CBM), an unsteady state often arises due to the rapid extraction, release and pressure relief of CBM. In this case, the effective stress of coal changes dynamically, affecting the stability of the gassy coal seam.
Bing Zhang, Hanpeng Wang, Peng Wang, Guofeng Yu, Shitan Gu   +4 more
doaj   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source

Gas Content and Gas Occurrence Mechanism of Deep Coal Seams in the Shenfu-Linxing Block

Energies
The Shenfu-Linxing block in the Ordos Basin holds abundant deep coalbed methane (CBM) resources, which can alleviate gas shortages and aid dual carbon target achievement. Considering isothermal adsorption traits and parameters like vitrinite reflectance,
Litao Ma, Fan Yang, Jianghao Yang, Yi Cui, Wei Wang, Cheng Liu, Bo Zhang, Jiang Yang, Shu Tao   +8 more
doaj   +1 more source

On the prediction of methane adsorption in shale using grey wolf optimizer support vector machine approach

Petroleum, 2022
With the advancement of technology, gas shales have become one of the most prominent energy sources all over the world. Therefore, estimating the amount of adsorbed gas in shale resources is necessary for the technical and economic foresight of the ...
Rahmad Syah, Mohammad Hossein Towfighi Naeem, Reza Daneshfar, Hossein Dehdar, Bahram Soltani Soulgani   +4 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Depth-Dependent Adsorbed–Free Methane Partitioning and Deep CBM Enrichment in the Daning–Jixian Block, Ordos Basin

Energies
Coal reservoirs commonly contain both adsorbed and free methane, but their depth-dependent partitioning and controlling mechanisms remain difficult to quantify.
Longmei Zhao, Li Huang, Nan Wu, Yixin Zhang, Haoyang Zhao, Wen Zhang, Zhanwei Li, Shuling Tang, Shida Chen   +8 more
doaj   +1 more source