Results 31 to 40 of about 1,893 (138)

An Adaptive Control Method for the Distribution Valve of a Digital Pump

Machines, 2023
Perfect flow distribution is extremely important and essential for digital pumps. However, the fluctuation of motor speed and the change of valve dynamic characteristics cause the flow distribution flaw, which generates the backflow of the oil in the ...
Daling Yue, Xiukun Zuo, Zengguang Liu, Yinshui Liu, Liejiang Wei, Yuyang Zhao   +5 more
doaj   +1 more source

Drop‐Location‐Insensitive Droplet‐Based Electricity Generator Using Polydimethylsiloxane Slippery Covalently Attached Liquid Coatings

Advanced Science, EarlyView.
Drop‐location sensitivity remains a key barrier to practical droplet‐based electricity generators (DEGs). Here, a polydimethylsiloxane slippery covalently attached liquid (PDMS‐SCAL)‐coated interface promotes droplet sliding instead of splitting or bouncing, allowing stable electricity generation from randomly falling raindrops. The resulting PDMS‐SCAL‐
Jung Bin Yang, Donghyeon Yoo, Hideaki Teshima, Donghan Lee, Dongwhi Choi, Dong Rip Kim, Nenad Miljkovic   +6 more
wiley   +1 more source

Liquid‐Assisted Single‐Layer Janus Membrane for Efficient Unidirectional Liquid Penetration

Advanced Science, 2022
Unidirectional liquid penetration plays an important role in many fields, such as microfluidic devices, biological medical, liquid printing, and oil/water separation.
Zhihong Zhao, Yuzhen Ning, Shuang Ben, Xudong Zhang, Qiang Li, Cunming Yu, Xu Jin, Kesong Liu, Lei Jiang   +8 more
doaj   +1 more source

Entorhinal Astrocyte Transplants Restore Spatial Exploration and Alleviate Amyloid‐Beta Pathology in Alzheimer's Mice

Advanced Science, EarlyView.
Impaired MEC astrocytic Ca2+ signaling is associated with fragmented spatial exploration in AD mice. Region‐specific glial progenitor transplantation generates engrafted astrocytes that are accompanied by improved AQP4 polarization, reduced amyloid‐β‐associated pathology, attenuated neuroinflammation, preserved synaptic integrity, and ameliorated ...
Fengjuan Wu, Jihua Fan, Xiang Zhou, Zhiqi Yang, Mingyue Gong, Mingzhu Huang, Zhenlu Cai, Shaofan Yang, Teng Teng, Chuanyan Yang, Jin Li, Haoyu Wang, Shuangshuang Dai, Chunhai Chen, Xiaowei Chen, Manxia Wang, Kuan Zhang   +16 more
wiley   +1 more source

Research on the Volumetric Efficiency of 2D Piston Pumps with a Balanced Force

Energies, 2020
Axial piston pumps with high rotational speeds are required in many fields to increase the power-to-weight ratio. However, three main sliding friction pairs in the pump restrict the increase in rotational speed.
Yu Huang, Jian Ruan, Yong Chen, Chuan Ding, Sheng Li   +4 more
doaj   +1 more source

Fabrication of a Composite Groove Array Surface with Gradient Wettability Which Delivers Enhanced Lubrication Performance

Lubricants
A novel composite groove array surface was fabricated using femtosecond laser ablation technology to enhance self-replenishment capability. Initially, the driving efficiency of droplets on the composite groove array surface was tested using a high-speed ...
Tianrui Zhang, Chenglong Liu, Xinming Li, Feng Guo, Kongmin Zhu   +4 more
doaj   +1 more source

Macrophage Dab1 Links Early Hypoxia to Adaptive Angiogenesis to Drive Peripheral Nerve Repair

Advanced Science, EarlyView.
Schematic diagram illustrating the Dab1‐linked hypoxia signaling pathway that accelerates angiogenesis and consequent nerve regeneration. Following PNI, a hypoxic microenvironment develops. Hypoxia induces macrophage Dab1 phosphorylation, resulting in NHE‐1 upregulation, HIF‐1α stabilization, and VEGF‐A expression. This cascade promotes angiogenesis in
Xiongyao Zhou, Fan Zhang, Jiangbo Wang, Huiyuan Wang, Zongqiang Wang, Qianqian Wang, Chuikai Meng, Jialu Sun, Han Wang, Weiye Li, Ziyi Zhao, Le Qi, Xiaosong Gu, Shusen Cui, Rangjuan Cao   +14 more
wiley   +1 more source

Reuse treatment technology of fracturing backflow fluid and its application in Wuqi Oilfield

Gongye shui chuli
The fracturing backflow fluid in Wuqi(WQ) Oilfield has problems such as large quantity, high viscosity, and difficult treatment, and the environmental situation is extremely severe.
CHEN Gang, WANG Weilong, YANG Shuisheng, LI Chen, ZHU Jinyan, SHEN Taizhi, HONG Xi   +6 more
doaj   +1 more source

An evaluation method of volume fracturing effects for vertical wells in low permeability reservoirs

Petroleum Exploration and Development, 2020
To evaluate the fracturing effect and dynamic change process after volume fracturing with vertical wells in low permeability oil reservoirs, an oil-water two-phase flow model and a well model are built.
Anshun ZHANG, Zhengming YANG, Xiaoshan LI, Debin XIA, Yapu ZHANG, Yutian LUO, Ying HE, Ting CHEN, Xinli ZHAO   +8 more
doaj   +1 more source

Astrocytes Coordinate Neurovascular Coupling During Prolonged Sensory Demand via AQP4/TRPA1/BEST1/D‐Serine Signaling

Advanced Science, EarlyView.
Neuronal activation leads to astrocytic transient volume changes, activating transient receptor potential ankyrin 1 (TRPA1) channels, leading to Ca2+ influx. Activation of TRPA1 causes the release of D‐serine through BEST1. Finally, the augmented extracellular levels of D‐serine boost neuronal activity by binding GluN1‐containing NMDARs, leading to CBV
Kayoung Han, Minwoo Wendy Jang, Taeyoung Park, Ki Jung Kim, Victor James Drew, Sunpil Kim, Tai Young Kim, Mingu Gordon Park, Myeongju Kim, Seung Won Chung, Minah Suh, C. Justin Lee   +11 more
wiley   +1 more source