Results 1 to 10 of about 2,725,424 (194)

Variation characteristics of CO2 adsorption phase density in coal seam and Its Controlling mechanism: A case study of Huainan-Huaibei coalfield

open access: yesMeitian dizhi yu kantan
Objectives and Methods The CO2 adsorption phase density is a key factor determining the CO2 adsorption sequestration capacity in coal seams. To deeply understand the characteristics of CO2 density distribution in pores of the coal seam, taking the No.13 ...
Huihu LIU   +8 more
doaj   +1 more source

Fractal Characteristics of Pore Structure in Lacustrine Shale Oil Reservoirs and Controlling Factors of Oil Occurrence State: A Case Study of Da’anzhai Member, Sichuan Basin

open access: yesFractal and Fractional
The Jurassic lacustrine oil shale in southwest China has become a primary production layer due to its high yield and substantial reserves. However, influenced by the lacustrine environment, the vertical profile of the lacustrine shale reservoir shows ...
Miao Li   +4 more
doaj   +1 more source

Automatic Process Mineralogy Based on Gold Ore Core

open access: yesKuangchan zonghe liyong
This is an article in the field of process mineralogy. A quartz vein type gold deposit in Shandong has a gold grade of 2.51 g/t. In order to further develop the deposit and study the beneficiation process, the process mineralogy of the mineral was ...
Mingming CAI   +5 more
doaj   +1 more source

The occurrence of stress-strain state of SA-3 during operation [PDF]

open access: yesE3S Web of Conferences
Speaking about the wear of the traction and impact surfaces of the automatic coupling body, the main types of malfunctions are associated with large dynamic forces that occur during operation and are transmitted from the locomotive to the entire train ...
Martynenko Liubov
doaj   +1 more source

The Comparative Statics on Asset Prices Based on Bull and Bear Market Measure [PDF]

open access: yes
For single-period complete financial asset markets with representative investors, we introduce a bull market measure for uncertain state occurrence and its associated ordering between representative investors in markets based on their marginal rate of ...
Masamitsu Ohnishi, Yusuke Osaki
core  

Quantitative Assessment of Free and Adsorbed Shale Oil in Kerogen Pores Using Molecular Dynamics Simulations and Experiment Characterization

open access: yesEnergies
Understanding the microscopic occurrence states of shale oil—particularly the distribution between adsorbed and free phases—is essential for optimizing the development of unconventional reservoirs. In this study, we propose an integrated methodology that
Yuhao Guo   +7 more
doaj   +1 more source

Study on occurrence law of sulfur in high-sulfur coal with different particle sizes and densities

open access: yesMeikuang Anquan
To investigate the state of sulfur in different particle sizes and density fractions of high-sulfur coal, the Ciyaogou high-sulfur coal was divided into particle size and density fractions according to the screening method and flotation method.
Yulong YANG, Fei GAO, Yunming ZHANG
doaj   +1 more source

Distribution State of Zinc and the Rare Elements Gallium and Germanium in a Zinc Ore

open access: yesKuangchan zonghe liyong
This is an article in the field of process mineralogy. The occurrence of zinc, associated dispersed elements Ga and Ge and the distribution characteristics of the main carrier minerals of a zinc ore in China are studied in detail by means of chemical ...
Lili ZHANG   +5 more
doaj   +1 more source

Application of Process Minerals Research on a Magnetite Ore in Guazhou County, Gansu Province

open access: yesKuangchan zonghe liyong
The type of magnetite ore belongs to the altered gabbro type iron mine in Guazhou County, Gansu Province. The chemical and mineral properties were studied by means of chemical multiple analysis, X-ray fluorescence spectrum analysis, phase analysis ...
Haojia SI   +3 more
doaj   +1 more source

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