Results 181 to 190 of about 443,219 (282)

Trace element zoning of colorless beryl from spodumene pegmatites of Pashki deposit (Nuristan province, Afghanistan)

Frontiers in Earth Science
Sergey G. Skublov, Sergey G. Skublov, Nazifullah Hamdard, Mikhail A. Ivanov, Vladislav S. Stativko, Vladislav S. Stativko   +5 more
doaj   +1 more source

Geochemical Characteristics and Formation Environment of Mudstones in the Xueyuanhe Formation in the Raggyorcaka Area, Qiangtang Basin. [PDF]

ACS Omega
Peng J, Xie Y, Yue M, Peng Q, Wang Z, Wang R, Wang Z, Hu Y.   +7 more
europepmc   +1 more source

Enhancement of the Plant‐Accessible Phosphate Fraction in Sewage Sludge Ashes by Na+ or K+ Addition Prior to Combustion

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr, Viktoria Gräser, Michael Scherer‐Lorenzen, Peter Hajek, Philipp Kurz   +4 more
wiley   +1 more source

Influence of Sedimentary Environment on Organic Matter Enrichment in Shallow Marine Shelf Organic-Rich Shales: Study of the Wujiaping Formation in Eastern Sichuan Basin. [PDF]

ACS Omega
Huang Y, Huo F, Huang H, Wang X, Wen H, Kang J, Hu Y, Wu X, Guo R, Xi Z.   +9 more
europepmc   +1 more source

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Characterization of Hydrocarbon Molecular Signatures across Sedimentary Subbasins and Stratigraphic Units: Insights into Source Rock Attributes in Kansas. [PDF]

ACS Omega
Omoyemi OV, Agbogun HMD, Titah JT, Rahman MW, Hanson SS.   +4 more
europepmc   +1 more source

An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system

Deep Underground Science and Engineering, EarlyView.
The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand, Ang Li, Wenbo Huang, Juanwen Chen, Qingshan Ma, Fangming Jiang   +5 more
wiley   +1 more source

Lithological identification for mixed carbonate and clay sediments employing principal component analysis of geophysical logging. [PDF]

Sci Rep
Guo J, Wang L, Li Y, Wang Y, Zhou L.
europepmc   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Nitrogen Isotopic Composition of Crude Oils from the Dongpu Depression, Bohai Bay Basin, Eastern China: Implications for Sedimentary Redox Conditions and Oil-Source Correlation. [PDF]

ACS Omega
Chen J, Chen J, Yao L, Shi S, Zhu L, Song Z, Cao X.   +6 more
europepmc   +1 more source