Results 41 to 50 of about 335,851 (308)

Development and performance optimization of a new composite sealing material prepared by drilling cuttings

Frontiers in Earth Science, 2023
A highly efficient composite sealing material was prepared using drilling cuttings as the base material and a binder, a coagulant, and other additives as auxiliaries.
Xiaoping Li, Guoping Han, Yong Wang, Jie Xu, Jie Du, Bo Yang, Min Zhang, Tao Li, Bo Li, Junxiang Zhang   +9 more
doaj   +1 more source

Research progress on coal mine laser methane sensor [PDF]

, 2019
This paper discusses the research progress of low-power technology of laser methane sensors for coal mine. On the basis of environment of coal mines, such as ultra-long-distance transmission and high stability, a series of studies have been carried out ...
Grattan, K. T. V., Jiang, D., Jin, G., Li, Y., Liu, T., Liu, Z., Meng, H., Shi, Z., Sun, T., Wei, Y., Zhang, H.   +10 more
core   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov, Patrick Fesser, Boris A. Bulgakov, Ulrich S. Schubert   +3 more
wiley   +1 more source

A New Mode of Visible Fracture System in Coal Seams and Its Implications for Coalbed Methane Seepage

Geofluids, 2023
As the central flow channel for fluid seepage through rock layers, the visible fracture system (VFS) significantly affects geoenergy extraction for petroleum, natural gas, geothermal resources, and greenhouse gas sequestration. In this work, we propose a
Rui Li, Lihong Jin, Shengwei Wang, Heping Liu, Zhigang Cui, Wenting Xiang   +5 more
doaj   +1 more source

Thermo‐Fluorescent Bactericidal Quantum Dots Based Smart Multifunctional Textiles via Molecular Surface Engineering and 3D‐Printed Interlocked Architectures

Advanced Healthcare Materials, EarlyView.
A versatile approach is presented for fabricating smart multifunctional textiles by integrating thermo‐fluorescent carbon dot/polymer nanocomposite coatings with 3D‐printed interlocked architectures. The fabrics exhibit temperature‐responsive fluorescence, durable hydrophobicity, strong antibacterial and antioxidant activity, and enhanced UV protection.
Poushali Das, Sayan Ganguly, Parham Khoshbakht Marvi, Misha Muthalali, Fatemeh Parniani, Shiza Hassan, Xiaowu (Shirley) Tang, Seshasai Srinivasan, Amin Reza Rajabzadeh   +8 more
wiley   +1 more source

Coal Mine Safety and Health [PDF]

, 2008
[Excerpt] Safety in the coal mining industry is much improved compared to the early decades of the twentieth century, a time when hundreds of miners could lose their lives in a single accident and more than 1,000 fatalities could occur in a single year ...
Levine, Linda
core   +4 more sources

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Geochemical source analysis of rock cuttings based on major elemental geochemistry

Meitan xuebao
In recent years, shale logging has played a crucial role in the grouting reinforcement engineering of the floor limestone strata in “North China-type”coalfields.
Herong GUI, Jun LI, Yongqing CHEN, Hao YU, Hao WANG, Shuang YE, Daxing CHEN, Zhan LIANG, Yang HU, Yan GUO, Jiying XU   +10 more
doaj   +1 more source

Coal-shale interface detection system [PDF]

, 1979
A coal-shale interface detection system for use with coal cutting equipment consists of a reciprocating hammer on which an accelerometer is mounted to measure the impact of the hammer as it penetrates the ceiling or floor surface of a mine.
Campbell, R. A., Hudgins, J. L., Morris, P. W., Reid, H., Jr., Zimmerman, J. E.   +4 more
core   +1 more source

Relationship of Dye Adsorption Onto Biomass Activated Carbon Mixed Matrix Ultrafiltration: A Mass Transfer Model Study

Advanced Materials Interfaces, EarlyView.
This study explored dye molecule adsorption from water, focusing on activated carbon in polymer membranes for purifying low‐quality water. Polyvinylidene fluoride (PVDF) membranes showed enhanced removal efficiency of methylene blue (MB) from 89.29% to 98.33% with biomass‐activated carbon (BAC).
Khairul Anwar Mohamad Said, Shaiza Asif, Siti Zahara May Abdullah, Ibrahim Yakub, Harunal Rejan Ramji, Md Rezaur Rahman   +5 more
wiley   +1 more source