Results 21 to 30 of about 8,772,710 (396)

The Gas Content and Stripping of Local Group Dwarf Galaxies [PDF]

Astrophysical Journal, 2021
The gas content of the complete compilation of Local Group dwarf galaxies (119 within 2 Mpc) is presented using H i survey data. Within the virial radius of the Milky Way (224 kpc here), 53 of 55 dwarf galaxies are devoid of gas to limits of M H i < 104 ...
M. Putman, Yonggang Zheng, A. Price-Whelan, J. Grcevich, Amalya C. Johnson, E. Tollerud, J. Peek   +6 more
semanticscholar   +1 more source

CBM Gas Content Prediction Model Based on the Ensemble Tree Algorithm with Bayesian Hyper-Parameter Optimization Method: A Case Study of Zhengzhuang Block, Southern Qinshui Basin, North China

Processes, 2023
Gas content is an important parameter for evaluating coalbed methane reservoirs, so it is an important prerequisite for coalbed methane resource evaluation and favorable area optimization to predict the gas content accurately.
Chao Yang, Feng Qiu, Fan Xiao, Siyu Chen, Yufeng Fang   +4 more
semanticscholar   +1 more source

RELIABILITY OF WATER CONTENT DATA FOR NATURAL GAS-HYDRATE SYSTEMS USING SEMI-EMPIRICAL CORRELATIONS [PDF]

, 2023
Water in natural gas can result in various operational problems, which may lead to equipment failure and plant shutdown. Knowing the amount of water capable of condensing from natural gas is essential.
Anthony Obinna Chukwu, Victor Joseph Aimikhe   +1 more
core   +1 more source

Experimental Study on Rapid Determination Method of Coal Seam Gas Content by Indirect Method

Processes, 2023
In view of the problems of heavy work, long cycle, high cost and low efficiency in the process of indirect determination of coal seam gas content, the basic gas parameters and coal quality indexes of 24 coal samples from 5 coal mines in the Hancheng area
Hongyan Lei, Linchao Dai, Jie Cao, Rifu Li, Bo Wang   +4 more
semanticscholar   +1 more source

A New Method for Predicting the Gas Content of Low-Resistivity Shale: A Case Study of Longmaxi Shale in Southern Sichuan Basin, China

Energies, 2023
Low-resistivity shales are widely developed in the Sichuan Basin. The production of low-resistivity shale gas reservoirs ranges from high to low to none.
Xianggang Duan, Yonghui Wu, Zhenxue Jiang, Zhiming Hu, Xianglu Tang, Yuan Zhang, Xinlei Wang, Wenyi Chen   +7 more
doaj   +1 more source

Method for Intensive Gas–Liquid Dispersion in a Stirred Tank

ChemEngineering, 2023
This article presents the results of hydrodynamics and mass exchange in a stirred tank upon the introduction of gas from an open gas vortex cavity into local liquid regions with reduced pressure.
Nikolai A. Voinov, Alexander S. Frolov, Anastasiya V. Bogatkova, Denis A. Zemtsov, Olga P. Zhukova   +4 more
doaj   +1 more source

Characteristics of Pore Structure and Gas Content of the Lower Paleozoic Shale from the Upper Yangtze Plate, South China

Energies, 2021
This study is predominantly about the differences in shale pore structure and the controlling factors of shale gas content between Lower Silurian and Lower Cambrian from the upper Yangtze plate, which are of great significance to the occurrence mechanism
Xiaoyan Zou, Xianqing Li, Jizhen Zhang, Huantong Li, Man Guo, Pei Zhao   +5 more
doaj   +1 more source

Combining K-Means Clustering and Random Forest to Evaluate the Gas Content of Coalbed Bed Methane Reservoirs

Geofluids, 2021
The accurate calculation of the gas content of coalbed bed methane (CBM) reservoirs is of great significance. However, due to the weak correlation between the logging response of coalbed methane reservoirs and the gas content parameters and strong ...
Jie Yu, Linqi Zhu, R. Qin, Zhansong Zhang, Li Li, Tao Huang   +5 more
semanticscholar   +1 more source

The High Molecular Gas Content, and the Efficient Conversion of Neutral into Molecular Gas, in Jellyfish Galaxies [PDF]

Astrophysical Journal, 2020
In the disks of four jellyfish galaxies from the GASP sample at redshift ∼0.05 we detect molecular gas masses systematically higher than in field galaxies.
A. Moretti, R. Paladino, B. Poggianti, P. Serra, M. Ramatsoku, A. Franchetto, T. Deb, M. Gullieuszik, N. Tomičić, M. Mingozzi, B. Vulcani, M. Radovich, D. Bettoni, J. Fritz   +13 more
semanticscholar   +1 more source

Gas Content Regulates the Life Cycle of Star Formation and Black Hole Accretion in Galaxies [PDF]

Astrophysical Journal, 2020
Feedback from active galactic nuclei (AGNs) is expected to impact the amount of cold gas in galaxies by driving strong galactic winds, by preventing external gas inflows, or by changing the thermodynamical state of the gas.
Hassen M. Yesuf, L. Ho
semanticscholar   +1 more source