Results 81 to 90 of about 2,661,924 (301)

The Characteristics of Fluid Potential in Mud Diapirs Associated with Gas Hydrates in the Okinawa Trough

Terrestrial, Atmospheric and Oceanic Sciences, 2006
Many mud diapirs have been identified in the southern Okinawa Trough from a seismic survey using R/V KEXUE I in 2001. The movement and accumulation of free gas related to mud diapirs are discussed in detail by an analysis of fluid potential which is ...
Ning Xu, Shiguo Wu, Xiujuan Wang, Dongdong Dong   +3 more
doaj   +1 more source

Sustaining star formation rates in spiral galaxies - Supernova-driven turbulent accretion disk models applied to THINGS galaxies

, 2010
Gas disks of spiral galaxies can be described as clumpy accretion disks without a coupling of viscosity to the actual thermal state of the gas. The model description of a turbulent disk consisting of emerging and spreading clumps (Vollmer & Beckert 2003)
Adam K. Leroy, Ballesteros-Paredes, Bernd Vollmer, Bigiel, Bush, Cox, Dalcanton, de Blok, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Evans, Frisch, Gil de Paz, Gomez, Haan, Helfer, Heyer, Joung, Kim, Kobulnicky, Koyama, Krumholz, Krumholz, Krumholz, Leroy, Leroy, Marinacci, McClure-Griffiths, Moustakas, Pilyugin, Robertson, Scalo, Shetty, Tamburro, Tamburro, Thornton, Trachternach, Vink, Wada, Wada, Walter, Wolf-Chase, Wong   +44 more
core   +1 more source

On the operation of the chemothermal instability in primordial star-forming clouds [PDF]

, 2013
We investigate the operation of the chemothermal instability in primordial star-forming clouds with a suite of three-dimensional, moving-mesh simulations.
Bromm, Volker, Greif, Thomas H., Springel, Volker   +2 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Supersaturation effect and its characterization in gas-rich intervals of deep coal seams

Meitian dizhi yu kantan
Objective and MethodHigh free gas content serves as a key factor controlling the enrichment and high productivity of deep coalbed methane (CBM). However, its direct determination is challenging, making the accurate identification of free gas-rich coal ...
Lihong ZHOU, Yong LI, Rong DING, Yun LI, Yongzhou LI, Jintao KONG   +5 more
doaj   +1 more source

Carbon isotopic composition of water-soluble gases and their geological significance in the Sichuan Basin

Petroleum Exploration and Development, 2012
Twenty-two gas and twenty-two water samples were collected from producing wells in the Triassic Xujiahe, Leikoupo and Jialinjiang formations and the Permian Maokou Formation in the Mid, South and Northwest Sichuan gas areas.
Shengfei QIN
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Mechanism of gas breakthrough time control in deep CBM wells and optimization of production strategies

Meitan xuebao
Deep coalbed methane (CBM) resources in the eastern margin of the Ordos Basin are abundant. However, significant variations in gas breakthrough time among production wells, coupled with a lack of targeted drainage system guidance and insufficient ...
Zhaodong XI, Shuheng TANG, Lijiang DUAN, Songhang ZHANG, Zhizhen WANG   +4 more
doaj   +1 more source

Thermodynamic Characteristics of Methane Adsorption of Coal with Different Initial Gas Pressures at Different Temperatures

Advances in Materials Science and Engineering, 2019
The adsorption of methane in coal depends on both pressure and temperature, and the adsorption gas content decreases as the temperature rises while increases as the pressure increases.
Tingting Cai, Zengchao Feng, Yulong Jiang, Dong Zhao   +3 more
doaj   +1 more source

Imperfect Bose Gas with Attractive Boundary Conditions

, 2005
The free Bose gas with attractive boundary conditions is an interesting toy model for the study of Bose-Einstein Condensation (BEC), because one has BEC already in one dimension. Here we study for the first time the imperfect Bose gas with these boundary
A. Verbeure, Fannes, Fannes, Fannes, L. Vandevenne, Landau, Lewis, Robinson, Vandevenne, Zagrebnov   +9 more
core   +1 more source