Results 31 to 40 of about 48,608 (309)

The mechanistical principles and engineering application of roof- cutting for roadway protection in advance of the working face

Scientific Reports
In coal mining operations, it is often challenging to control the deformation of the roadway in front of the working face. The excessive stress from the surrounding rock of the working face and the difficulties in caving the goaf roof have led to a ...
Zhaotai Li, Yuejin Zhou, Xiaoding Xu, Yuhang Xiao, Yunong Xu   +4 more
doaj   +1 more source

Behavior of noncircular tunnels excavated in stratified rock masses – Case of underground coal mines

Journal of Rock Mechanics and Geotechnical Engineering, 2019
The amount of tunnels excavated along stratified/sedimentary rock masses in Quangninh coal mine area, Vietnam, is gradually increasing. Rock mass in Quangninh is characterized by beddings between rock layers.
Ngoc Anh Do, Daniel Dias, Van Diep Dinh, Tien Tung Tran, Van Canh Dao, Viet Doan Dao, Phuc Nhan Nguyen   +6 more
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Energy Release Mechanism of Underwater Implosion With Different Structural Bodies

Geofluids
Underwater implosion is typically accompanied by intense shock wave energy. The investigation of its energy release mechanism is crucial for structural safety protection, marine environmental monitoring, ocean acoustic field analysis, and energy ...
Yuhao Zhang, Honglei Shen, Lei Song, Yanchao Ma, Li Zhao, Changhao Zhu   +5 more
doaj   +1 more source

Evolutionary pattern and a calculation method of in situ gas pressure based on pressure-retaining coal cores

Meitian dizhi yu kantan
Objective and MethodsThe in situ gas pressure of coal seams represents a crucial parameter for the safe production of coal mines and the assessment of coalbed methane (CBM) resources.
Mingzhong GAO, Jie SONG, Pengfei CUI, Yongcheng LI, Zhipeng WANG, Xuemin ZHOU, Ju LI, Zongxin HAO, Haichun HAO   +8 more
doaj   +1 more source

Experimental Study on Thermal Damage and Energy Evolution of Sandstone after High Temperature Treatment

Shock and Vibration, 2018
Thermal damage and energy evolution characteristics in process of impact failure of sandstone after high temperature treatment were studied by split Hopkinson pressure bar (SHPB) system.
Rong-rong Zhang, Lai-wang Jing, Qin-yong Ma   +2 more
doaj   +1 more source

Bamboo‐Like Whiskers‐Reinforced Bioceramics Accelerate Large Segmental Bone Regeneration via Dual Modulation of Type‐H Vessels and Osteoinduction

Advanced Science, EarlyView.
The graphical abstract image of bamboo‐like whisker‐reinforced Ca‐P bioceramics accelerating large segmental bone regeneration. ABSTRACT Regenerative repair of segmental bone defect remains a major clinical challenge. The conventional mental implants suffer from mechanical strength mismatch and long‐term foreign bodies presence.
Cong Feng, Haibo Teng, Chuyao Xu, Jiaze He, Keting Liu, Xueying Li, Kai Zhang, Xiangdong Zhu, Xiangfeng Li, Jianguo Xu, Xingdong Zhang   +10 more
wiley   +1 more source

Geopolymeric subaqueous lightweight fill material derived by waste spoil in construction: Mechanical and microstructural analysis

Case Studies in Construction Materials
This study presents a geopolymer-based Subaqueous Foamed Lightweight Soil (SFLS), innovatively facilitating the application of Foamed Lightweight Soil (FLS) for subaqueous backfilling and enabling waste spoil (WS) recycling on a large scale. Key findings
Xiaohui Sun, Yuefeng Bi, Shuhua Huang, Xiangsheng Chen, Silin Wu, Yuansheng Peng, Zhongping Chen   +6 more
doaj   +1 more source

Controlling Photochromism of Donor‐Acceptor Stenhouse Adducts on Micro‐Dot Arrays Beyond Human‐Eyes Resolution for Dynamic Light Encryption

Advanced Science, EarlyView.
This study presents a micro‐dot array strategy for dynamic light encryption, utilizing DASA‐based photochromism with resolution beyond human‐eye capacity. By precisely controlling isomerization kinetics, the method reveals multi‐layered encrypted information under specific light irradiation, enhancing information security and anti‐counterfeiting ...
Hongtao Hu, Fanxi Sun, Hanjun Zhang, Xiao Wang, Gaolu Zhu, Jiayu Li, Mengyao Yang, Xu Deng, Yonghao Zheng, Chen Wei, Dongsheng Wang   +10 more
wiley   +1 more source

Tyrosinase Driven‐Intracellular Polymerization of a Porphyrin Derivative Induced Immunogenic Death of Melanoma Cells and Strengthened Photodynamic Therapy

Advanced Science, EarlyView.
This study uses tyrosinase, which is highly expressed in melanoma, to drive porphyrins to polymerize and self‐assemble within tumor cells to form retented microstructures. This process induces immunogenic death and activates immune responses (M1 macrophages, dendritic cells, CD8+T cells), turning “cold” tumors into “hot” tumors.
Mian Tang, Junteng Qiu, Yunfeng Lu, Yahui Song, Xinyu Zhou, Tianshun Duan, Xuanqi Peng, Caixia Yin, Cheng Gao, Ruibing Wang   +9 more
wiley   +1 more source