Results 121 to 130 of about 382,665 (308)

Проходка породоруйнівного інструменту за оберт як критерій оптимізації бурового технологічного процесу [PDF]

, 2012
Проведено аналіз критеріїв оптимізації технологічного режиму проходки свердловин. Показано, що одним із критеріїв, за яким задаються параметри режиму буріння, є величина оптимального заглиблення породоруйнівного інструменту за оберт, яка є комплексним ...
Шаповал, О. А.
core  

LEAD: Literature Enhanced Ab Initio Discovery of Nitride Dusting Layers for Enhanced Tunnel Magnetoresistance and Lower Resistance Magnetic Tunnel Junctions

Advanced Materials, EarlyView.
Magnetic tunnel junctions (MTJs) using MgO tunnel barriers face challenges of high resistance‐area product and low tunnel magnetoresistance (TMR). To discover alternative materials, Literature Enhanced Ab initio Discovery (LEAD) is developed. The LEAD‐predicted materials are theoretically evaluated, showing that MTJs with dusting of ScN or TiN on ...
Sabiq Islam, William S. Rogers, Chen‐Yu Hu, Ming‐Yuan Song, Xinyu Bao, Shehrin Sayed, Jean Anne C. Incorvia   +6 more
wiley   +1 more source

Experimental Investigation on the Effects of Cutting Direction and Joint Spacing on the Cuttability Behaviour of a Conical Pick in Jointed Rock Mass

Applied Sciences
In this study, a series of rock cutting tests was conducted using a conical pick to investigate the effect of joints on roadheader performance. Tests were performed on intact rock and jointed rock mass specimens with three different joint spacings.
Han-Eol Kim, Min-Seong Kim, Wan-Kyu Yoo, Chang-Yong Kim   +3 more
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Perennial Flowers [PDF]

, 1948
PDF pages ...
Ries, Victor H.
core  

Actuation of Cell Layers in Three Dimensions

Advanced Materials, EarlyView.
ABSTRACT The alignment of fibers and cells in living tissues affect their mechanical properties and functionality. In this context, one can draw an analogy between tissues and nematic liquid crystal elastomers. We explore this analogy by growing fibroblasts on 2D‐patterned substrates and observing the contraction of cell sheets upon detachment from the
Kirsten Endresen, Aniruddh Murali, Birte C. Geerds, Grecia M. Valenzuela Portillo, Maria Bloksgaard, Daniel J.G. Pearce, Francesca Serra   +6 more
wiley   +1 more source

Innovation and practice of efficient integrated tunneling and bolting in semi-coal rock roadways

Meitan kexue jishu
The efficient and rapid excavation of semi-coal rock roadways is a major engineering challenge that needs to be addressed urgently in the mines with ten-million-ton productivity in Shaanxi-Inner Mongolia mining area. A series of technical issues, such as
Hong WANG, Mingjun CHEN, Kai MA, Jun LI, Xiaofeng ZHANG   +4 more
doaj   +1 more source

Resistance to Overdoping Allows Over 2000 S cm−1 Conductivity in P(g3BTTT) With Anion‐Exchange Doping

Advanced Materials, EarlyView.
Anion‐exchange doping of conjugated polymers is an effective way to achieve high conductivities. Here, we report over 2000 S cm−1 electrical conductivity for doped P(g3BTTT). In addition, we show that P(g3BTTT) sustains exceptionally high doping levels without any drop in the charge mobility.
Basil Hunger, Maximilian M. Horn, Eva Röck, Diego Rosas Villalva, Lize Bynens, Jochen Vanderspikken, Christina Kousseff, Silène Gobeil, Olivier Bardagot, Nesibe Akmanşen‐Kalayci, Sarah H. Tolbert, Iain McCulloch, Wouter Maes, Demetra Tsokkou, Natalie Banerji   +14 more
wiley   +1 more source

Boosting Seawater Desalination by Ampere‐Level Nitrate Electroreduction On Defect‐Rich Ultrathin RuCu Alloy Nanostructures

Advanced Materials, EarlyView.
Defect engineering of ultrathin RuCu alloy nanostructures has been successfully achieved to enhance ammonia electrosynthesis under indutrial‐level current density. Simultaneously, the stable ampere‐level operation of nitrate electroreduction on defective RuCu nanostructures can drive seawater desalination at an ultrafast salt removal rate, offering an ...
Juan Wang, Liang Guo, Qingbo Wa, Fengkun Hao, Fu Liu, Chaohui Wang, Yunhao Wang, Mingzheng Shao, Yiwei Guo, Guozhi Wang, Xiang Meng, Fangren Qian, Xiuyun Zhang, Chongyi Ling, Shengqi Chu, Zhanxi Fan   +15 more
wiley   +1 more source

Optimization criteria for coal-rock cutting parameters based on digital rock mechanics

Meitan xuebao
Tunneling is a critical process in coal mining and infrastructure construction, where its efficiency and safety directly impact economic performance and human life protection.
Hong WANG, Haitao LI, Shouguang WANG, Xiaofeng ZHANG, Mingjun CHEN, Chi LIU, Pengyu MU, Jianwei ZHENG, Yulong CHEN, Liang ZHANG   +9 more
doaj   +1 more source