Results 151 to 160 of about 1,510,051 (362)

Quantitative Assessment and Source of Heavy Metals in Bricks: A Case Study of Lakki Marwat, Khyber Pakhtunkhwa, Pakistan

Pakistan Journal of Analytical & Environmental Chemistry
Humans' indiscriminate usage of heavy metals has a negative impact on the world's natural ecosystem. One of the main causes of contaminating the fresh and healthy atmosphere in rural Pakistan is the use of coal and soil in an improper manner by brick ...
Muhammad Bilal , Javed Ali , Zia-ur-rehman , Zahid Farooq, Hizbullah Khan   +4 more
doaj   +1 more source

Justification of process of loading coal onto face conveyors by auger heads of shearer-loader machines

, 2018
K L Nguyen, V. V. Gabov, Д. А. Задков, Thai-Son Le   +3 more
openalex   +1 more source

THE NIGERIAN COAL CORPORATION: AN EVALUATION OF PRODUCTION PERFORMANCE(1960 1987) [PDF]

COAL WAS DISCOVERED IN NIGERIA IN 1909 AND COAL MINING STARTED WITH A DRIFT MINE AT OGBETE, ENUGU IN 1915. SINCE 1958/59, WHEN COAL PRODUCTION REACHED ITS PEAK, THERE HAS BEEN A PERSISTENT FLUCTUATION IN THE AMOUNT OF COAL PRODUCED IN SUBSEQUENT YEARS ...
DR. GODWIN CHUKWUDUM NWAOBI
core  

Application of palynological techniques for correlation of coal seams in the Lower Lignite Creek area, Nenana Coal Field [PDF]

, 1980
This study concerns spores and pollen in the coals of the lower Lignite Creek area in the Nenana Coal Field, which is operated by Usibelli Mining Company.
McFarlane, R., Sanders, R., and Rao, P.D.
core  

Embedding Chemistry and Pharmacy Into Sustainability

Angewandte Chemie International Edition, EarlyView.
Chemistry and pharmacy provide products and processes that are indispensable for our high living standard. To understand their relationship with sustainability is important to allow them to contribute to sustainability in a sustainable manner. An integrated overview of green, circular, and sustainable chemistry and pharmacy is given and how they have t
Klaus Kümmerer
wiley   +1 more source

Enrichment characteristics and genesis mechanism of critical elements (Nb-Ta-Zr-Hf-REE-Y) in coals: a case study of Late Permian coalfield in Northeastern Guizhou, China

Frontiers in Earth Science
The discovery of coal-type beneficial metal deposits and corresponding genesis mechanisms are cutting-edge issues in current sedimentary environment research. Based on industrial analysis, mineralogy, and geochemical measurement of seven typical mines in
Ziyi Ye, Baoqing Li, Jialiang Cao
doaj   +1 more source

Optimization of Aceh Low Rank Coal Upgrading Process with Combination of Heating Media to Reduce Water Content through Response Surface Method

JGEET: Journal of Geoscience, Engineering, Environment and Technology
This research aims to improve the rank of coal in Aceh, which is known to have a relatively high moisture content of 44-52%. The upgrading process is carried out by using hot water, and hot oil as media combined with microwaves to remove moisture content
Fadhilah Al Mardhiyah, Mahidin, Fauzi, Faisal Abnisa, Khairil   +4 more
doaj   +1 more source

What is Coal? [PDF]

Proceedings of the Royal Society of Edinburgh
Dr Fleming, after stating the circumstances which led him to bring before the Royal Society the consideration of this question, pointed out the distinction between a mineral species and a rock, a circumstance which had been greatly overlooked in recent discussions on the subject.
openaire   +2 more sources

THE IMPACT OF COAL WASTE HEAPS ON THE ENVIRONMENT OF SOKAL DISTRICT OF LVIV REGION [PDF]

, 2018
The environmental situation in Sokal district is one of the most complicated in Lviv region, which is caused by man-made environmental impact of mining, coal preparation and chemical industries.
Popovych, Vasyl, Voloshchyshyn, Andriy
core  

In situ bioremediation of South African coal discard dumps [PDF]

, 2016
A. Keith Cowan, Henk Lodewijks, L Sekhohola, Oghenekume Gerald Edeki   +3 more
openalex   +1 more source