Results 71 to 80 of about 265 (205)

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

EVALUASI PENGGUNAAN AERATED DRILLING PADA SUMUR “BHT” LAPANGAN PANAS BUMI

, 2023
AbstrakEvaluasi pemboran aerasi pada sumur directional “BHT” lapangan panas bumi yang mengalami kehilangan sirkulasi total (TLC) pada trayek 12,25” dengan kedalaman TLC 6387,5 ft MD.
Hanny Oktori Hutabarat
core  

Rapid deployment drilling system for on-site inspections under a comprehensive test ban treaty vol. 1: description, acquisition, deployment, and operation vol. 2: appendices [PDF]

, 1999
The Comprehensive Test Ban Treaty (CTBT) has been signed by many countries, including the US. The US Senate will start discussions of CTBT ratification in the near future. The Treaty aims to prevent any nuclear explosion from being conducted.
Vorkinn, Paul, Heuze, Francois, Rock, Devin, Deskins, Greg, Cohen, John, Pittard, Gerard   +5 more
core   +1 more source

Miniaturized Bidirectional Thermal Stimulation System Integrated With an Electrode Array for Recording Neural Activities

Advanced Science, EarlyView.
This study presents a miniaturized bidirectional thermal stimulation system integrated with an electrode array enabling real‐time, bidirectional modulation and simultaneous recording of neural activity through localized heating and cooling. By monolithic integration of the Peltier element and with a silicon neural probe, the innovative system allows ...
Zoia Naumkina, Kanghwan Kim, Wesley Charles Smith, Keuntae Kim, Shinwoo Lee, Jiwan Woo, Il‐Joo Cho   +6 more
wiley   +1 more source

Environmental risk assessment in coal mining with methane degassing [PDF]

MATEC Web of Conferences
The environmental directives within the European Union consider the necessary environmental protection, establishing strict protocols for controlling methane emissions in mining operations.
Fidalgo-Valverde Gregorio, Menéndez-Díaz Agustín, Krzemień Alicja, Riesgo-Fernández Pedro, Marqués Sierra Antonio Luis   +4 more
doaj   +1 more source

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

Key technology of pressure-relief gas extraction in low dynamic fracture zone of mining overburden in single ultra-thick coal seam

Meitan kexue jishu
Different from the high gas and prominent mining areas in the middle east of China, the mining face of single thick and extra thick coal seam in the western mining area has a large amount of unloading gas and mainly originates from this coal seam, if the
Longyong SHU, Yuanlong ZHANG, Xin SONG, Yongpeng FAN, Yang LI   +4 more
doaj   +1 more source

Drilling Fluid Impact Studies Show that Worker Health and the Environment Can Be Protected While Improving Drilling Performance

, 2018
GTL (Gas-to-Liquid) drilling base fluids, such as Shell GTL Saraline™ 185V/NEOFLO™ 4633, are synthetic hydrocarbons produced via Fischer-Tropsch synthesis from natural gas.
Burnell Lee, Azman Abd-Rashid, Don Van Slyke, Delina Lyon, Jane Koh, Graham Whale, Peter Boogaard, Serena Lim, Pat Grover   +8 more
core   +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

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