Results 51 to 60 of about 974,451 (233)

A glimpse of horizontal directional drilling productivity factors

MATEC Web of Conferences, 2018
Horizontal Directional Drilling (HDD) is a trenchless technology provides an installation alternative that offers a lot of benefit compared to traditional open-cut method.
Salleh Mohd Norizam, Azam Haron Nuzul, Mohd Shafri Helmi Zulhaidi, Abdullah Abdul Aziz, Ahmad Nadzrol Fadzilah   +4 more
doaj   +1 more source

Research on Multiple Pipelines Pullback Force of Trenchless Horizontal Directional Drilling Crossing Project

南方能源建设, 2021
[Introduction] Trenchless horizontal directional drilling is widely used in power cable line project to cross natural or artificial obstacles at present.Multiple cable protection tubes need to be laid successfully at one time in engineering applications.
CAO Bo, HUANG Longxiang, LUO Yan
doaj   +1 more source

Endothelial miR‐15a/16‐1 Regulation of SYNE1 Mediates Structural and Functional Recovery after Traumatic Brain Injury

Advanced Science, EarlyView.
Endothelial miR‐15a/16‐1 deletion promotes long‐term recovery after traumatic brain injury by restoring SYNE1 expression. Enhanced endothelial SYNE1 preserves vascular integrity, protects white and gray matter, and improves neurological function. The endothelial miR‐15a/16‐1–SYNE1 axis emerges as a key regulator of neurovascular repair and a potential ...
Shun Li, Na Qiu, Chao Zhou, Andrew Ni, Ping Sun, Jia‐Jun Liu, Xin‐Lei Huang, Tian‐Qing Xiong, Yu‐Chi Zhang, Hai‐Zhou Liu, Xiao‐Tao Xu, Rui Wang, Shi‐Qing Zhang, Yu‐Xin Zhang, Silvia Liu, C. Edward Dixon, Jun Chen, Ke‐Jie Yin   +17 more
wiley   +1 more source

Hydraulic System Simulation of Heavy Horizontal Directional Drilling Head

, 2011
According to the features of heavy horizontal directional drill hydraulic system, power head hydraulic system which is the main working mechanism of the 280t horizontal directional drilling is modeled and simulated base on Amesim.
Ye Fei, Shu Yang Cong, Bin Bian
core   +1 more source

Rainfall Shapes the Diversity of Soil Nitrogen‐Fixing Microorganisms Worldwide

Advanced Science, EarlyView.
This study reveals the distinctive pattern and mechanism of rainfall driving the global biodiversity and biogeography of soil potential N‐fixing microorganisms, and constructs the theoretical framework. The results guide us on how to maintain ecosystem productivity under future climate changes (e.g., whether a specific region needs more N fertilizers ...
Bin Hua, Shuang Pang, Ang Li, Zonghao Hu, Honghui Wu, Shuhan Zhang, Yi Fan, Yi Wu, Wei Yang, Yachao Zhao, Yupeng Guan, Baoming Ji, Deliang Kong, Yong Zhao, Anton A. Goncharov, Anastasia Yu. Korotkevich, Rong Mao, Yang Zhang, Ximei Zhang   +18 more
wiley   +1 more source

Theoretical analysis of mud flow in large-scale horizontal directional drilling based on Herschel-Bulkley fluid

Yantu gongcheng xuebao
Determining the mud flow direction in large-scale horizontal directional drilling (HDD) projects is crucial for accurately calculating the minimum required circulation pressure, flow rate, and drilling pressure.
WANG Zhiyu 1, HU Changming 1, 2, WANG Peiyan 1, YANG Chao 3, LIANG Hui 3
doaj   +1 more source

Additive Manufacturing of High‐Performance Polymers for Extreme Environments

Advanced Science, EarlyView.
Additive manufacturing of high‐performance polymers for extreme environments is critically reviewed through an integrated chemistry‐processing‐structure‐property‐qualification framework. The review compares fused filament fabrication, selective laser sintering, and direct ink writing, linking rheology and thermal history to crystallization, defect ...
Md Tofazzal Hossain, Mohammed Intishar Nur, Md Shajedul Hoque Thakur, Indranil Dey, Md Mesbahul Maruf, Md Jahid Hasan, Suryasarathi Bose, Muhammad M. Rahman   +7 more
wiley   +1 more source

Gas extraction technology and application of near horizontal high directional drilling

Energy Reports, 2022
In order to solve the problem of gas accumulation in the upper corner caused by large gas emission due to high mining intensity in the fully mechanized top coal caving face of Wangjialing coal mine, we used numerical simulation method combined with the ...
Huijun Duan, Yi Wang, Qian Xiao, Jiale Wang, Dong Peng   +4 more
doaj   +1 more source

A Magnetic‐Driven Self‐Rotation‐Stabilized Miniature Swimming Robot

Advanced Science, EarlyView.
Inspired by the stable rotational descent of seeds in nature, this study designs a magnetic‐driven self‐rotation‐stabilized miniature swimming robot (MSMSR). Based on a resonance‐driven strategy, the robot exhibits high swimming performance, offering enhanced directional swimming and improved resistance to water flow disturbances compared to existing ...
Fujun Wang, Chuhan Zhang, Hao Zhang, Yanling Tian, Cunman Liang   +4 more
wiley   +1 more source

Arrayed Magnetic Accelerator Synergistically Enhances Orthodontic Tooth Movement via Microtubule Assembly‐Mediated Periodontal Remodeling

Advanced Science, EarlyView.
Mechanical orthodontic treatment for malocclusion is limited by slow remodeling and risks due to poor biomechanical sensing. This study shows that static magnetic fields (SMFs) enhance mechanical sensation in periodontal ligament cells, promoting inflammation and osteoclast activity.
Yiling Lou, Jiwei Sun, Peng Chen, Caihong Mao, Junyuan Zhang, Haoqi Lei, Xiaoqing Han, Yaxuan Zhang, Yuheng Jiang, Yulin Jia, Bin Su, Lili Chen   +11 more
wiley   +1 more source