Results 61 to 70 of about 5,863 (268)

Effect of layered joints on rockburst in deep tunnels

International Journal of Coal Science & Technology, 2022
The existence of joints in the surrounding rock mass has a considerable effect on tunnel rockbursts. Herein, we studied the effect of layered joints with different inclination angles and spacings on rockburst in deep tunnels and investigated the failure ...
Mingming He, Jinrui Zhao, Bianyuan Deng, Zhiqiang Zhang   +3 more
doaj   +1 more source

Advances in Magnesium‐Based Thermoelectrics: A Critical Review

Advanced 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, Li Zhang, Nan‐Hai Li, Yan‐Ling Yang, Xiao‐Lei Shi, Zhi‐Gang Chen   +5 more
wiley   +1 more source

Application of the Slope Coefficient of the Equivalent M–C Criterion in Layered Rock Mass Engineering

, 2022
The slope coefficient ω is defined based on the insufficiency of the area equivalent method, the slope of the equivalent M–C criterion obtained from the instantaneous equivalent, and the optimal first-order approximation to reduce the error between the ...
Wencheng Bao, Fan Zhang, Zhigang Ding, Qian Liu, Qizhi Hu   +4 more
core   +1 more source

Ultra‐High‐Throughput Discovery of Multifunctional Polyphenolic Coatings on Droplet Microarrays

Advanced Materials, EarlyView.
An ultra‐high‐throughput (UHT) combinatorial strategy enables the miniaturized synthesis and screening of ≈30 000 polyamine‐polyphenolic (PaPp) coatings using droplet microarrays (DMA). This approach reveals hundreds of previously unknown fluorescent, redox‐active, and antibacterial materials, including multifunctional, cell‐compatible surfaces ...
Vania Tanda Widyaya, Joaquín E. Urrutia Gómez, Paul Reuß, Alexander Welle, Rolf A. Gattung, Jana Mayer, Peter Krolla, Markus Reischl, Pascal Friederich, Anna A. Popova, Thomas Schwartz, Pavel A. Levkin   +11 more
wiley   +1 more source

Failure behaviors of anisotropic shale with a circular cavity subjected to uniaxial compression

Journal of Rock Mechanics and Geotechnical Engineering
Layered rock formations are frequently encountered during the excavation of underground structures. The stability of such structures is influenced not only by the stress concentration caused by the cavities in the strata but also by the anisotropy of the
Xianhui Feng, Huilin Liu, Peitao Wang, Shichao Zhang, Quanqi Zhu, Chun'an Tang, Yaxing Leng   +6 more
doaj   +1 more source

Earth pressure on a retaining structure in layered and jointed rock masses

KSCE Journal of Civil Engineering, 2017
This work looked into the earth pressure induced on retaining walls in different rock layer formations and joint conditions. Based on the simulation of a large-scale expermental test, extended numerical tests were carried out focusing on the effect of various rock layer formations on earth pressure characteristics.
Moorak Son, Solomon Adedokun
openaire   +1 more source

Finite element and empirical solutions for estimating bearing capacity and settlement of a jointed, multi-layered dam rock foundation

, 2022
This study discusses the bearing capacity and settlement behaviour of highly jointed mica-schist rock mass that is divided into multilayers along depth beneath the foundation of Burgaz Dam in Izmir, Turkey.
Kadakçı Koca, Tümay, KOCA, MEHMET YALÇIN, Koca, Tumay Kadakci, Koca, Mehmet Yalçın   +3 more
core   +1 more source

Cornus Mas L. Seed‐Derived Biosorbent for Methylene Blue Removal: Surface Characterization and Biosorption Performance

Advanced Materials Interfaces, EarlyView.
Cornus mas L. seeds are transformed into a high‐performance biosorbent through chemical modification, effectively removing methylene blue from aqueous solutions. Comprehensive characterization and optimization reveal a maximum biosorption capacity of 71.71 mg g−1, establishing this sustainable, cost‐effective material as a promising solution for ...
Hakan Yıldız, Adem Necip, Arslan Yusuf Yüksel   +2 more
wiley   +1 more source

Study on deformation of layered rock tunnel based on material point method [PDF]

Archives of Civil Engineering
The stability problems of layered rock mass are frequently encountered in tunnel and underground engineering. Affected by bedding plane, the mechanical properties of surrounding rock show obvious anisotropy, which makes its failure characteristics more ...
Jingjie Pang, Zhenhua Xing, Yang Li, Binwei Xia, Gexin Wan, Shusen Wang, Kang Fu   +6 more
doaj   +1 more source

Facet‐Specific PbS Quantum Dot Passivation Using Halide Perovskites for SWIR Photodetectors

Advanced Materials Interfaces, EarlyView.
PbS quantum dots (QDs) are emerging as powerful short‐wave infrared photodetectors, yet the passivation mechanism of large QDs by perovskites ‐ critical for their stability ‐ remains unexplained. Here, we unveil the ligand structure of CH3NH3PbI3 (MAPI)‐passivated 4‐nm PbS QDs using FTIR, XPS, SEM, NMR, and DFT.
L. Paillardet, M. Gromova, D. Liu, A. S. Vasenko, O. V. Prezhdo, S. Alarab, G. De Paëpe, G. Lefevre, S. Charlot, O. Gourhant, B. Mortini, P. Reiss, J.‐M. Verilhac, D. Aldakov   +13 more
wiley   +1 more source