Results 181 to 190 of about 52,347 (253)

Permafrost landsystems define regional variability in climate change effects on northern environments. [PDF]

Nat Commun
Kokelj SV, Wolfe SA, Weiss N, Froese D, Baltzer JL, Lantz TC, O'Neill HB, Morse PD, Sniderhan A, Speetjens NJ, Van der Sluijs J, Alvarez A, Tank SE, Gruber S.   +13 more
europepmc   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Integration of geospatial techniques and artificial neural networks for groundwater potential zonation in India. [PDF]

Sci Rep
Badapalli PK, Nakkala AB, Pujari PS, Gugulothu S, Kottala RB, Mannala P, Alkhuraiji WS, Thamaga KH, Zhran M.   +8 more
europepmc   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Analysis of the failure state of the Cenozoic clay layer in thin bedrock coal seam mining: A case study of Sanyuan coal mine. [PDF]

PLoS One
Wu G, Wang M, Wang L.
europepmc   +1 more source

Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs

Deep Underground Science and Engineering, EarlyView.
A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao, Shuheng Du, Yuan Zhang, Jinghong Hu, Bo Zhou, Yun Wei   +5 more
wiley   +1 more source

Global groundwater contamination by geogenic fluoride. [PDF]

Environ Geochem Health
Ali S, Mishra P, Brindha K, Gutiérrez M, Kumar R, Sunkari ED, Gevera PK, Karro E, Egbueri JC, Dehbandi R, Chandrajith R, Li P, Islam ARMT, Yun ST, Sabino H, Emilio MD, Baba A, Durrani TS, Amiri V, Aqeel A, Ijumulana J, Edokpayi JN, Schafer D, Razowska-Jaworek L, Alarcón-Herrera MT, Batdelger O, Goswami R, Farooqi A, Fabio AE, Recepoğlu YK, Paz-Montelongo S, Bhattacharya P.   +31 more
europepmc   +1 more source

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Hydrocarbon Generation Potential, Paleoenvironmental Conditions, and Organic Matter Enrichment of the Fengcheng Formation Black Shales in the Hala'alat Mountain, NW Junggar Basin: Chemostratigraphic Insights from Well HQ‑6. [PDF]

ACS Omega
Li Z, Zhang S, Zhou J, Song M, Bai J, Zhang L, Jia Y, Liu R, Guo H, Hu'anishen J, Wei Y.   +10 more
europepmc   +1 more source

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

Deep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu, Hanyi Wang, Quan Gan, Shuang Zheng   +3 more
wiley   +1 more source