Results 61 to 70 of about 11,904 (295)

Advances in Magnesium‐Based Thermoelectrics: A Critical Review

open access: yesAdvanced Materials, EarlyView.
Magnesium‐based thermoelectric materials have emerged as promising candidates for low‐to‐mid‐temperature energy conversion due to their abundance, low cost, and competitive performance. This review summarizes recent advances in Mg3X2, MgAgSb, and Mg2X systems, covering transport mechanisms, fabrication strategies, stability challenges, and device ...
Li‐Min Zhang   +5 more
wiley   +1 more source

Evolution Mechanism of Deformation and Failure of Surrounding Rock during Excavation and Unloading of the High‐Stress Rock Mass [PDF]

open access: yesAdvances in Civil Engineering, 2020
To deeply analyze the failure evolution of surrounding rock during excavation‐induced unloading of the high‐stress rock mass, a multistage failure model was established based on revealed failure patterns. The critical conditions for wing cracks were determined. The slab crack buckling analysis was carried out. The true‐triaxial rockburst testing system
Wensong Xu   +8 more
openaire   +2 more sources

Study on Deformation and Failure Laws of Surrounding Rock in Layered Rock Roadway by Discrete Element Method

open access: yes, 2020
In order to study the deformation and failure laws of roadway surrounding rock under the condition of layered rock, the one orbit lane of Shandong Yuncheng Coal Mine was taken as the research background, and PFC2D discrete element software was adopted to
WANG Huifeng, SONG Libing
core   +1 more source

Study on deformation of surrounding rock in fault tunnel based on field measured data statistics

open access: yes, 2021
Based on the statistical analysis of surrounding rock deformation from 56 fault tunnels in China, the overall distribution characteristics and time evolution laws of surrounding rock deformation and the relationships with buried depth of tunnel and the ...
Chen Hao
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Deformation Failure Characteristics and Maintenance Control Technologies of High-Stress Crossing-Seam Roadways: A Case Study

open access: yesApplied Sciences, 2023
The surrounding rock structure of the crossing-seam roadway is poor and is susceptible to anchorage failure phenomena, such as top plate sinking and convergence deformation under high ground stress.
Zhengzheng Xie   +6 more
doaj   +1 more source

Investigation on Deformation and Failure Characteristics and Stability Control of Soft Rock Roadway Surrounding Rock in Deep Coal Mine

open access: yes, 2011
Numerical simulation and field measurement were carried out to investigate into laws of deformation and movement and the evolving characteristics of the plastic region around the roadway based on engineering conditions of deep soft rock roadway in ...
Ju Cai Chang, Guang Xiang Xie
core   +1 more source

Key Factors Affecting the Deformation and Failure of Surrounding Rock Masses in Large-Scale Underground Powerhouses

open access: yes, 2020
The stability of the surrounding rock masses of underground powerhouses is always emphasized during the construction period. With the general trends toward large-scale, complex geological conditions and the rapid construction progress of underground ...
An-chi Shi   +4 more
core   +1 more source

Additive Manufacturing of Patient‐Specific Intracranial Aneurysm Cell Culture Models

open access: yesAdvanced Materials Technologies, EarlyView.
Patient‐specific intracranial aneurysm models were fabricated using chocolate moulding, 3D printed water‐soluble cores, and direct resin 3D printing. Moulding PDMS around sacrificial cores made of chocolate or 3D printed water‐soluble resin yielded accurate, expandable, and endothelializable models that outperformed resin‐based approaches.
Chloe M. de Nys   +6 more
wiley   +1 more source

Study on Stress Disturbed Mechanism and Supporting Method of Weakly Cemented Roadway near Chambers

open access: yesComplexity, 2023
After excavation of the weakly cemented roadway adjacent to the chambers, deformation characteristics such as roof subsidence, roadway extrusion, and floor heave appear, showing the characteristics of large deformation of surrounding rock, long ...
Wei Zhang
doaj   +1 more source

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