Results 11 to 20 of about 3,454 (255)

Reclaimed Area Land Cover Mapping Using Sentinel-2 Imagery and LiDAR Point Clouds

open access: yesRemote Sensing, 2020
This paper investigates the possibility of using fusion Sentinel-2 imageries (2016, ESA) and light detection and ranging (LiDAR) point clouds for the automation of land cover mapping with a primary focus on detecting and monitoring afforested areas and ...
Marta Szostak   +2 more
doaj   +1 more source

Multiple Sulfur Isotope Records of the 3.22 Ga Moodies Group, Barberton Greenstone Belt

open access: yesGeosciences, 2020
The Moodies Group, the uppermost unit in the Barberton Greenstone Belt (BGB) in South Africa, is a ~3.7-km-thick coarse clastic succession accumulated on terrestrial-to-shallow marine settings at around 3.22 Ga.
Masafumi Saitoh   +6 more
doaj   +1 more source

Robust Photocatalytic Hydrogen Evolution Over a Conjugated Metal-Organic Framework Heterojunction. [PDF]

open access: yesAdv Sci (Weinh)
We report a conjugated coordination polymer, Cd‐TMT (TMT = 1,3,5‐trimercaptotriazine), featuring an intrinsic molecular‐level charge transport network. The conjugated TMT ligands facilitate strong intra‐ligand charge transfer, while their ordered π‐π stacking along the [111] direction establishes a continuous pathway for directional electron migration,
Wang C   +6 more
europepmc   +2 more sources

Microbial Dissimilatory Sulfur Cycle in Acid Mine Water [PDF]

open access: yesJournal of Bacteriology, 1969
Ferric, sulfate, and hydrogen ions are produced from pyritic minerals associated with coal as a result of autotrophic bacterial metabolism. Water carrying these ions accumulated behind a porous dam composed of wood dust originating at a log-cutting mill.
J H, Tuttle   +3 more
openaire   +2 more sources

Sulfur analyses and mineralogical data in the preliminary mine waste characterization

open access: yesEnvironmental Monitoring and Assessment, 2022
AbstractThe objective of this study was to investigate the use of the acid production potential (AP) calculation factor and seven different S analysis methods in the preliminary mine waste characterization by analyzing and comparing 48 Finnish mine waste samples.
Teemu Karlsson   +4 more
openaire   +2 more sources

Mineralogical and Geochemical Studies of Oil Shale Deposits in the Cretaceous/Paleogene succession at Quseir Area, Egypt

open access: yesEgyptian Journal of Petroleum, 2019
Cretaceous/Paleogene succession in Quseir area represents one of the most important economic sedimentary rocks, which contain phosphate and oil shale beds.
M.A. Barakat   +4 more
doaj   +1 more source

Research progress of non-cyanide gold leaching in gold mines

open access: yes工程科学学报, 2021
With the exhaustion of easy-to-treat gold ore resources, gold ores containing arsenic, carbon, high sulfur, and ultrafine particles have become the focus of gold mining.
Ke-bo PENG   +7 more
doaj   +1 more source

Sulfur-Oxidizing Bacteria From Coal Mine Enhance Sulfur Nutrition in Pigeonpea (Cajanus cajan L.)

open access: yesFrontiers in Environmental Science, 2022
The present investigation was carried out to isolate, identify, and characterize sulfur-oxidizing bacteria (SOB) from coal mines and to evaluate the efficient strains for their ability to influence plant growth and S uptake in pigeonpea.
Deepti Malviya   +6 more
doaj   +1 more source

The Potential Role of Halothiobacillus spp. in Sulfur Oxidation and Acid Generation in Circum-Neutral Mine Tailings Reservoirs

open access: yesFrontiers in Microbiology, 2019
The biogeochemistry of acid mine drainage (AMD) derived from waste rock associated sulfide mineral oxidation is relatively well-characterized and linked to Acidithiobacillus spp..
Kelly Whaley-Martin   +6 more
doaj   +1 more source

Analysis of Carbon Contents and Heavy Metals in Coal Samples Using Calibration-free LIBS Technique

open access: yesJournal of Spectroscopy, 2022
We report a compositional analysis of four coal samples collected from different mines in Pakistan and one Chinese brand. The coal samples were pelletized in the form of a disc and irradiated with a focused laser beam of fundamental (1064 nm) and second (
Muhammad Aamir Israr   +3 more
doaj   +1 more source

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