Results 21 to 30 of about 10,179,498 (326)

Interacting galaxies on FIRE-2: the connection between enhanced star formation and interstellar gas content [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
We present a comprehensive suite of high-resolution (parsec-scale), idealised (non-cosmological) galaxy merger simulations (24 runs, stellar mass ratio ~2.5:1) to investigate the connection between interaction-induced star formation and the evolution of ...
J. Moreno   +10 more
semanticscholar   +1 more source

The effect of special additives on the physico-mechanical properties of mixtures used for the manufacture of cores by the cold-box-amine-process

open access: yesЛитьë и металлургия, 2023
The article presents an analysis of the effect of various special additives on the physical and mechanical properties of sand‑resin mixtures used for the manufacture of cores by the cold‑box‑amine process.
S. V. Koreniugin, S. L. Rovin
doaj   +1 more source

An evaluation of weld metal nitrogen retention and properties in 316NL austenitic stainless steel [PDF]

open access: yes, 2011
A series of tests were conducted using varying levels of nitrogen and helium in a conventional argon shielding gas when welding 316LN austenitic stainless steel. The outcome was that a 15 per cent nitrogen addition to the argon shielding gas had the most
Baker, Thomas   +2 more
core   +1 more source

Halpha surface photometry of galaxies in the Virgo cluster. IV: the current star formation in nearby clusters of galaxies [PDF]

open access: yes, 2002
Halpha+[NII] imaging observations of 369 late-type galaxies in the Virgo cluster and in the Coma/A1367 supercluster are analyzed.
A. Boselli   +5 more
core   +2 more sources

Optimization and application of W-P model for regional prediction index of outburst coal seam

open access: yesMeikuang Anquan, 2021
In order to obtain the internal correlation of gas content and gas pressure suitable for different mining areas in Guizhou Province, and accurately calculate the measured values of the two indexes in line with the characteristics of coal seams, the W-P ...
HENG Xianwei, LI Qingsong
doaj   +1 more source

Experimental and Simulation Studies on Adsorption and Diffusion Characteristics of Coalbed Methane

open access: yesEnergies, 2019
Coalbed methane (CBM) content is generally estimated using the isotherm theory between pressure and adsorbed amounts of methane. It usually determines the maximum content of adsorbed methane or storage capacity.
Donghyeon Kim   +4 more
doaj   +1 more source

Effect and mechanism of geological structures on coal seam gas occurrence in Changping minefield

open access: yesEnergy Science & Engineering, 2020
The main factor affecting the gas content in a coal seam is the geological structure, and different types of geological structure have different effects on the gas content in a coal seam.
Xiangjun Chen   +3 more
doaj   +1 more source

Coalbed methane reservoir dynamic simulation comparisons using the actual steeply inclined model and ideal steeply inclined model

open access: yesFrontiers in Earth Science, 2022
Numerical simulation is an efficient method to quantitatively describe the reservoir dynamics of coalbed methane (CBM) reservoirs. The ideal steeply inclined model (ISIM), assumed to be a steeply inclined plate, has been widely applied in steep coalbed ...
Quanling Qin   +8 more
doaj   +1 more source

Comparative study on permeability enhancement effect of separate-layer fracturing and multi-layers comprehensive fracturing in coal seam group

open access: yesMeikuang Anquan, 2021
In this paper, a gas roadway with multiple coal seams in southwest China is taken as the test site, and the separate-layer hydraulic fracturing and multilayers comprehensive hydraulic fracturing are carried out.
FENG Renjun
doaj   +1 more source

Evaluation of the efficiency of liquid degassing technology based on the principle of hydrodynamic cavitation [PDF]

open access: yesActa Periodica Technologica, 2023
The article presents data on the evaluation of the effectiveness of liquid degassing in the conditions of hydrodynamic cavitation, which is implemented in a Venturi tube.
Nedbailo Anna Ye.   +4 more
doaj   +1 more source

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