Results 241 to 250 of about 48,809 (312)

Fatigue Failure Mechanism and Crack Growth Behavior of Ti-6Al-4V ELI Titanium Alloy Welded Joints. [PDF]

Materials (Basel)
Liu J, Li Y, Rui SS, Chen W, Sun C.
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

Fixed-wing air transport of patients with spinal pathologies: a scoping review of current evidence and future research priorities. [PDF]

Acta Neurochir (Wien)
Thamilmaran A, Hodgson Z, Peramatzis K, Karampouga M, Jarratt M, Tsianaka E, Janssen IK, Tasiou A, Keser N, Murphy M.   +9 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

Experimental study on mechanical response of soft soil freezing in underground excavation using artificial ground freezing method. [PDF]

PLoS One
Han L, Yi L, Zhang P, Chai L, Cheng Z.
europepmc   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Effect of Metallurgical Process on Rotational Bending Fatigue Properties of H13 Hot Work Die Steel. [PDF]

Materials (Basel)
Li Y, Ma D, Zhang S, Sun X, Li Y, Zhang Z, Zhong Z.   +6 more
europepmc   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Task-Oriented Training for Rehabilitation in Multiple Sclerosis in a Non-Hospital Setting: A Protocol for a Randomized Controlled Trial. [PDF]

Healthcare (Basel)
Navas-Otero A, Villegas-López M, Jambón-Folea J, Varón-Jiménez S, Cabrera-Martos I, Ortiz-Rubio A, Rodríguez-Martínez MDC.   +6 more
europepmc   +1 more source