Results 61 to 70 of about 951,152 (213)
Analysis of hard coal quality for narrow size fraction under 20 mm
E3S Web of Conferences, 2018 The paper presents the results of an analysis of hard coal quality diversion in narrow size fraction by using taxonomic methods. Raw material samples were collected in selected mines of Upper Silesian Industrial Region and they were classified according ...
Niedoba Tomasz, Pięta Paulina
doaj +1 more source
International Journal of Agriculture System, 2015 This study aims to determine the best time of fermentation process and yeast concentration to improve the quality of “leri” (rice wahing waste). The study was conducted in the Bilibili village, Suppa Sub-District, Pinrang Regency, South Sulawesi Province
Muh. Akhsan Akib +3 more
doaj +1 more source
Mines magazine, January 1960 [PDF]
, 1960 Publication history: Began with volume 1 in 1910 and was originally titled, The Colorado School of Mines Magazine. The title changed to Mines Magazine in 1932.
core
Mines magazine, July 1970 [PDF]
, 1970 Publication history: Began with volume 1 in 1910 and was originally titled, The Colorado School of Mines Magazine. The title changed to Mines Magazine in 1932.
core
Design of mine-used methane sensor based on graphene-enhanced D-shaped PCF-SPR
Meikuang AnquanTraditional catalytic combustion methane sensors used in underground coal mines are susceptible to sulfur poisoning and require an oxygen-enriched operating environment.
Xiaoxu Zou
doaj +1 more source
Sulfur Geochemistry of Mining Impacted Waters [PDF]
Goldschmidt Abstracts, 2020 Stephanie Marshall +4 more
openaire +1 more source
Meitian dizhi yu kantanObjectiveBased on a comprehensive review of the history and current status of coal exploration and exploitation, this study presents an analysis of both the endowment characteristics and the exploration and research levels of coal resources in Guangxi ...
Hui WANG +9 more
doaj +1 more source
The analysis of mercury content in coals and ashes
E3S Web of Conferences, 2017 It is well known that mercury that enters the atmosphere is a serious threat to the natural environment. From the available literature, it can be stated that fossil fuels are among the main carriers of this fuel.
Kasprzyk Marta +3 more
doaj +1 more source