Results 61 to 70 of about 1,297 (234)

Development of a rapid field testing method for metals in horizontal directional drilling residuals with XRF sensor. [PDF]

Sci Rep, 2021
Zhang H, Antonangelo J, Penn C.
europepmc   +1 more source

Problems of Directional Drilling in OKD, DPB, a.s. [PDF]

Acta Montanistica Slovaca, 2004
Application of directional drilling in underground coal mines is well known from Australia or USA, this method is used especially for gas drainage and coal seam exploration.
Jankù Miroslav, Kunz Antonín
doaj  

Equipment and technologies for improving the processes of transportation of drilled rock [PDF]

E3S Web of Conferences
In this paper, an analysis of existing equipment for cleaning the bottom of the well from sludge during rotary drilling is carried out to find ways to improve the processes of transporting drilled rock.
Zainagalina Liaisan, Suleimanov Rustem, Zaripova Lilia   +2 more
doaj   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

The Dimensional Revolution of Phosphorus: From Allotropicity to Battery System Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Phosphorus‐based materials are promising high‐capacity anodes classified by dimension (0D–3D) to systematically explore their properties and composite strategies. When combined with materials such as carbon to form heterostructures, the electrical conductivity and stability are effectively enhanced.
Shuhan Zhang, Zhiyuan Zhang, Ziying Pan, Kaixuan Hu, Yameng Yin, Yapan Wu, Caihong Yang, Lei Zheng, Dongsheng Li   +8 more
wiley   +1 more source

Strong interfacial charge transfer from CrSBr induces extreme hole doping and quantum‐Hall states in graphene heterostructures

InfoScience, EarlyView.
Magnetic van der Waals semiconductors offer unique opportunities to integrate spin and charge degrees of freedom in atomically thin devices. We fabricate dual‐gated heterostructures consisting of exfoliated CrSBr and monolayer graphene with Hall measurement revealing robust heavy p‐doping of graphene and signals of h‐BN/graphene moiré superlattices ...
Ziqi Liu, Yuchen Gao, Chengfeng Zhu, Yichang Sun, Kenji Watanabe, Takashi Taniguchi, Zuxin Chen, Pingfan Gu, Yu Ye   +8 more
wiley   +1 more source

Torque Transmission Law in Slide Steering for Extra-Deep Directional Wells

Shiyou jixie, 2020
Speed and accuracy regulation at the tool face during conventional slide steering are crucial to improve the drilling efficiency of extra-deep directional/horizontal wells.
Sun Mingguang, Zhang Hongning, Liu Weidong, Zhang Jianlong   +3 more
doaj  

Casing Design Considerations for Horizontal Wells

Journal of King Saud University: Engineering Sciences, 1994
Horizontal Drilling is now a well established technique with growing popularity for exploiting a number of reservoirs which would otherwise be noncommercial.
Abdel-Alim Hashem, Fouad Khalaf
doaj   +1 more source

Complement C3 mediates adolescent social isolation‐induced hippocampal synaptic deficits and sex‐specific emotional dysfunction

Interdisciplinary Medicine, EarlyView.
Adolescent social isolation disrupts hippocampal function and exacerbates emotional symptoms, with sex‐specific patterns, as shown by human studies. In mice, social isolation decreased hippocampal synaptic density and calcium signaling, upregulated complement proteins, and activated complement‐mediated microglial synaptic phagocytosis.
Yuwan Qi, Siying Weng, Qiao Yin, Mengqi Li, Liang Shen, Enyou Qiao, Lu Gao, Yihan Wang, Yuxuan Li, Weifeng Luo, Qilin Zhang, Jing Wang, Jianfeng Feng, Qifei Cong   +13 more
wiley   +1 more source

Long‐Range Exciton Energy Transfer in Two‐Dimensional Materials

Laser &Photonics Reviews, EarlyView.
This review highlights recent advances in long‐range exciton energy transfer within planar 2D‐material architectures. It emphasizes the emergence of self‐hybridized excitonpolaritons, exciton coupling to surface plasmon polaritons and plasmonic lattices, and the role of dipoledipole transfer pathways in enabling efficient nanoscale energy transport ...
Paul H. Bittorf, Maximilian Black, Hebrew Crispin, Prabhdeep Singh, Parsa Darman, Sara Darbari, Fatemeh Chahshouri, Masoud Taleb, Nahid Talebi   +8 more
wiley   +1 more source