Zobrazeno 1 - 10
of 287
pro vyhledávání: '"temperature programming"'
Publikováno v:
Meikuang Anquan, Vol 55, Iss 1, Pp 132-138 (2024)
In order to explore the source of low metamorphic coal CO source and reduce the risk of natural fire in the coal seam, Taking the 3# coal seam of Dananhu No.1 mine as the research object, the CO generation rule in the CO occurrence, mining and cuttin
Externí odkaz:
https://doaj.org/article/f0447cf48dbe4307878e656a86d3ff71
Autor:
Hei Yin J. Chow, Tadeusz Górecki
Publikováno v:
Journal of Chromatography Open, Vol 5, Iss , Pp 100111- (2024)
This study evaluates the relationship between the power supply output (voltage (V), current (I), power (W)), used for heating a second dimension (²D) column, and the maximum heating rate and temperature offset achievable by custom built ²D temperat
Externí odkaz:
https://doaj.org/article/4d382ef6ee8d488f8622bdf6d3b7976d
Publikováno v:
Meikuang Anquan, Vol 54, Iss 12, Pp 64-72 (2023)
In order to study the characteristics of low-temperature oxidation of weakly viscous coal under different gas concentration conditions inside the mining area and the change law of kinetic parameters, this paper adopts the coal spontaneous combustion
Externí odkaz:
https://doaj.org/article/4c50511aac6b460c879005b6e4cb01ed
Publikováno v:
Meikuang Anquan, Vol 54, Iss 3, Pp 67-72 (2023)
Oxidized coal is a coal body that has undergone the process of warming up and cooling down, and has been widely used in mine fire area start-up, stratified mining, and re-mining of residual coal, etc. The coal dust generated from coal development and
Externí odkaz:
https://doaj.org/article/1dfb46e6c374414db9c8a83e4084ea4e
Publikováno v:
Meikuang Anquan, Vol 53, Iss 1, Pp 31-36 (2022)
In order to study the effect of silicification on low temperature oxidation characteristics of coal, scanning electron microscopy(SEM) was used to observe the difference of pore structure between silicified coal and non-silicified coal; the temperatu
Externí odkaz:
https://doaj.org/article/d26ed230f145461baa03dfb71a5459cc
Autor:
Hei Yin J. Chow, Tadeusz Górecki
Publikováno v:
Journal of Chromatography Open, Vol 2, Iss , Pp 100062- (2022)
A proof-of-concept second dimension (²D) temperature programming system for comprehensive two-dimensional gas chromatography (GC × GC) with true temperature control is introduced and its performance characterized. The ²D temperature programming sy
Externí odkaz:
https://doaj.org/article/8df0ac93a6e147629a8c27b783e4b751
Akademický článek
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Publikováno v:
Meikuang Anquan, Vol 52, Iss 5, Pp 31-35 (2021)
According to the current situation of spontaneous combustion of coal in the re-mining coal seam, the differences of spontaneous combustion characteristics of oxidized coal in Jinggezhuang Mine with four different re-mining times are analyzed. The cha
Externí odkaz:
https://doaj.org/article/74b73b2a337f4c629b3b20da0defa8d2
Publikováno v:
Nanomaterials, Vol 12, Iss 22, p 3989 (2022)
This study used a rapid and simple microwave-assisted synthesis method to grow ZnO nanoneedle arrays on the silicon substrate with the ZnO seed layer. The effects of reaction temperature and time on the lengths of ZnO nanoneedle arrays were investiga
Externí odkaz:
https://doaj.org/article/25e3a2b2eb23451f8a1d50d104faf394
Autor:
JING Changbao, SHEN Jianting
Publikováno v:
Meikuang Anquan, Vol 52, Iss 9, Pp 178-182, 189 (2021)
In order to study the law of coal spontaneous combustion in high-gas coal mines, the No.4 coal seam at 302 face of Tingnan Coal Mine was used as the research object. We analyze the “three-zone” law of spontaneous combustion in the district, and t
Externí odkaz:
https://doaj.org/article/54dddb7618304833b48c93beb3818f1c