Results 21 to 30 of about 772,208 (306)

New Pump-In Flowback Model Verification with In-Situ Strain Measurements and Numerical Simulation

Energies, 2023
This study presents an analytical model for estimating minimum horizontal stress in hydraulic fracturing stimulations. The conventional Diagnostic Fracture Injection Test (DFIT) is not practical in ultra-tight formations, leading to the need for pump-in ...
Ibrahim Eltaleb, Mohamed Y. Soliman
doaj   +1 more source

Oxidative Stress Inhibits Calpain Activity in Situ [PDF]

Journal of Biological Chemistry, 1998
In this study, the effects of oxidative stress on calpain-mediated proteolysis and calpain I autolysis in situ were examined. Calpain activity was stimulated in SH-SY5Y human neuroblastoma cells with the calcium ionophore, ionomycin. Calpain-mediated proteolysis of the membrane-permeable fluorescent substrate N-succinyl-L-leucyl-L-leucyl-L-valyl-L ...
R P, Guttmann, G V, Johnson
openaire   +2 more sources

Early identification on failure mode of loess landslide: insight from case study and physical model experiment

Frontiers in Earth Science
IntroductionThe Loess Plateau has long been plagued by cascading loess landslides. The rapid identification of these landslides, along with the accurate determination of their failure modes, is essential for conducting precise disaster assessments in the
Ran Li, Ran Li, Ran Li, Jiangkun He, Han Zheng, Chenyuan Zhang, Shuai Zhang, Shuai Zhang, Shuai Zhang   +8 more
doaj   +1 more source

In-situ stress characteristics and rockburst prediction for a tunnel in a high in-situ stress environment

Frontiers in Earth Science
As the main source of pressure around tunnel rock masses, in-situ stress must be thoroughly understood to accurately predict the potential for rockburst events, especially in high-stress construction environments.
Chun Luo, Zhiwen Shen, Jin Zhang, Maohong Yao, Ying Yang, Kai Zhang, Meng Wang, Shuang Yang, Yonggang Zhang   +8 more
doaj   +1 more source

Experimental characterization and numerical modeling of micromechanical damage under different stress states [PDF]

, 2013
The use of HSLA steels for the manufacture of automotive components is interesting from an engineering point of view. This family of steels, while possessing high strength, also has good formability and can be used in forming manufacturing processes.
ACHOURI, Mohamed, DAL SANTO, Philippe, GERMAIN, Guénaël, SAIDANE, Delphine   +3 more
core   +5 more sources

Influence of Grain Size Heterogeneity and In-Situ Stress on the Hydraulic Fracturing Process by PFC2D Modeling

Energies, 2018
A modified fluid-mechanically coupled algorithm in PFC2D was adopted in this article to study the influence of grain size heterogeneity and in-situ stress on hydraulic fracturing behavior.
Zhenhua Han, Jian Zhou, Luqing Zhang
doaj   +1 more source

Analysis of in-situ stress field characteristics and tectonic stability in the Motuo key area of the eastern Himalayan syntaxis

Dizhi lixue xuebao, 2023
In order to obtain the in-situ stress field characteristics and analyze tectonic stability in the Motuo key area of the eastern Himalayan syntaxis, the in-situ stress measurement of one in-situ stress hole and 11 test sections of the Xirang section of ...
ZHANG Bin, SUN Yao, MA Xiumin, PENG Hua, JIANG Jingjie, MAO Jiarui, ZHANG Wenhui, ZHAI Yudong   +7 more
doaj   +1 more source

Pressure-dependent transition from atoms to nanoparticles in magnetron sputtering: Effect on WSi2 film roughness and stress

, 2010
We report on the transition between two regimes from several-atom clusters to much larger nanoparticles in Ar magnetron sputter deposition of WSi2, and the effect of nanoparticles on the properties of amorphous thin films and multilayers.
A. L. Barabasi, Albert T. Macrander, Bing Shi, Hua Zhou, Kimberly MacArthur, L. B. Freund, Lan Zhou, Minghao Li, R. M. German, Randall L. Headrick, Ray Conley, Yiping Wang   +11 more
core   +1 more source

Susceptibility assessment of geological hazards in Shenzhen Town, Ninghai county based on the APH-CF model

Frontiers in Earth Science
IntroductionThis work employs a coupled evaluation model that integrates deterministic coefficients with the Analytic Hierarchy Process to conduct a comprehensive assessment of geological disaster susceptibility in Shenzhen Town, Ninghai County ...
Shuai Han, Ran Li, Ran Li, Ran Li, Shujun Hui, Qiang Sun, Taili Zhang   +6 more
doaj   +1 more source

Cryogenic Stress-Driven Grain Growth Observed via Microcompression with in situ Electron Backscatter Diffraction [PDF]

, 2020
The deformation of materials at cryogenic temperature is of interest for space, arctic, and fundamental science applications. In this work, a custom-built cooling system attached to a commercial picoindenter was used for in situ cryogenic ...
Bair, JL, Frazer, D, Homer, ER, Hosemann, P   +3 more
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