Results 111 to 120 of about 5,798 (299)

Retina‐Inspired Bi‐Based Terahertz Photonic Neuromorphic Devices

Advanced Science, EarlyView.
Combined with effective band alignment and substrate engineering, bismuth materials are introduced to form terahertz photonic bio‐inspired devices with picosecond short‐term plasticity to enable multi‐scene visual perception. Thus obtained hardware through the terahertz optical neural network (THz‐ONN) demonstrates high recognition accuracy, providing ...
Pujing Zhang, Donggang Xie, Longyu Shi, Mengyuan Wang, Huiwen Shi, Yu Wu, Menglei Li, Guangwei She, Peijie Wang, Wensheng Shi, Cunlin Zhang, Kuijuan Jin, Guozhen Yang, Qingli Zhou, Chen Ge   +14 more
wiley   +1 more source

Narrow-body Directional Crawler Drilling Rig Used in Coal Mine

, 2020
For the problems that existing directional drilling rig with a large width could not drill crossing belt borehole in conventional roadway and could not use in the drilling-excavating alternately construction, a smaller crawler directional drill rig with ...
LI Xiaoming, HAN Jian, YAO Yafeng
core   +1 more source

Analysis of drilling and reaming technique of large diameter high directional hole and gas extraction effect

Meikuang Anquan
Aiming at the problems of low comprehensive efficiency and high treatment cost in the conventional treatment of mining pressure relief gas in “U” ventilation mining face, taking a mining face in Jincheng Mining Area, Shanxi Province as the research ...
Weifeng YANG, Jianlin LIU, Fei LIU, Jianguo ZHAO, Zhiwei CHU   +4 more
doaj   +1 more source

Microbial Odorant Detection Guides Drosophila Parasitoids Seeking Hosts in Fermenting Fruits

Advanced Science, EarlyView.
Yeast microbes in fermenting fruits attract both host flies and their parasitoid wasps. Female Leptopilina boulardi detect yeast‐emitted ethyl esters via two olfactory receptors, LbouOR167 and LbouOR136. A conserved residue, Leu159, is critical for binding these compounds, enabling female wasps to locate host‐rich habitats.
Yueqi Lu, Lan Pang, Wenqi Shi, Ting Feng, Zhi Dong, Yifeng Sheng, Sicong Zhou, Longtao Yu, Hao Guo, Ying Wang, Jiani Chen, Jianhua Huang   +11 more
wiley   +1 more source

Boosting Sensory Nerve‐to‐Bone Interactions Enhances Hedgehog Mediated Calvarial Bone Repair

Advanced Science, EarlyView.
Boosting sensory nerve activity via TrkA agonism strongly accelerates calvarial bone repair in adult mice. Furthermore, single‐cell RNA sequencing and neuron–bone interactome analyses identify these sensory neurons as a direct neural source of Hedgehog pathway ligands. Consequently, these ligands drive osteoblast differentiation of skeletal progenitors,
Zhao Li, Xin Xing, Beicheng Du, Myles Zhou, Austin Z. Chen, Mary Archer, Chunbao Rao, Manyu Zhu, Masnsen Cherief, Aaron W. James   +9 more
wiley   +1 more source

Directional Drilling and Equipment for Hot Granite Wells [PDF]

, 1981
Directional drilling technology was extended and modified to drill the first well of a subsurface geothermal energy extraction system at the Fenton Hill, New Mexico, hot dry rock (HDR) experimental site.
Rowley, J. C., Neudecker, J. W., Williams, R. E., Brittenham, T. L., Rowley, J.C.   +4 more
core  

Layout of construction site in horizontal directional well drilling.

, 2018
Layout of construction site in horizontal directional well drilling.
Jiang-fu He (5227361), Yong-jiang Luo (5227367), Yun-pei Liang (5227358), Li-jia Li (5227364)   +3 more
core   +1 more source

Development of Drilling and Circulation Test System for LWD and Directional Drilling Tool

Shiyou jixie, 2016
The rotary steerable drilling technology has long been the monopoly of foreign company.The lack of the necessary domestic ground test equipment has seriously affected the technology development and industrialization process.In view of this,the drilling ...
Zhang Faming, Wang Zhiming, Wang Dong, Wang Hang, Jian Zhijun, Chen Lei   +5 more
doaj  

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Modeling, guidance, and control for cost conscious directional drilling

, 2019
Directional drilling has played an important role in the oil and gas industry. One of the challenges for directional drilling is its cost. In this dissertation, two aspects of minimizing directional drilling cost are identified and solution methodologies
Pehlivantürk, Can
core   +1 more source