Results 111 to 120 of about 30,274 (312)

A Millimeter‐Scale Implantable Magneto–Mechano–Electric Transducer Based on BTO Piezoelectric Ceramics for Remote Wireless Electrical Stimulation of Injured Sciatic Nerves

Advanced Science, EarlyView.
We report a fully wireless, circuit‐free neural stimulator built on a millimetric magneto‐mechano‐electric (MME) cantilever transducer (3 × 10 × 5 mm) with a barium titanate (BTO) piezoelectric ceramic core. Under low‐frequency alternating magnetic fields, the MME cantilever mechanically oscillates, inducing stress on the BTO element and thereby ...
Yijing Wang, Jingyu Tian, Zhe Xu, Cuiling Zhang, Jingen Wu, Ming Liu, Zhilu Ye, Xiaohui Zhang   +7 more
wiley   +1 more source

Mechanically Regulated Nanozymes for Remote Metabolic Reprogramming and Precise Cancer Therapy

Angewandte Chemie, EarlyView.
Inspired by mechanoenzymes, a ferrocene‐based mechanically regulated nanozyme converts acoustic shear force into enhanced peroxidase‐like activity by decreasing electron density and alleviating steric hindrance at the Fe active sites, thereby rewiring redox homeostasis. Leveraging this remote regulatory mechanism, a multienzyme‐regulated nanoreactor is
Fangman Chen, Xiaochun Xie, Hanyao Huang, Ka Hong Wong, Jiying Liu, Hui Fang, Shaowen Wang, Jianfang Cao, Yu Tao, Mingqiang Li, Chao Yang, Wen Sun, Dan Shao, Yunlu Dai   +13 more
wiley   +2 more sources

Numerical simulation of cryogenic cavitating flow in liquid hydrogen turbopump

Case Studies in Thermal Engineering
Cryogenic cavitation constitutes a critical factor affecting the performance of liquid hydrogen (LH2) turbopumps. To mitigate cavitation effects, this study couples the VOF model with a full gas model to numerically analyze the flow characteristics and ...
Lihan Zhang, Di Yan, Chengpeng Li
doaj   +1 more source

Design of a Novel Pump Cavitation Valve and Study of Its Cavitation Characteristics

Water
In centrifugal pump open cavitation tests, cavitation regulation valves are indispensable. During valve regulation, the irregular shape of the flow cross-section easily induces cavitation, significantly affecting the test results. This study investigates and designs a novel cavitation regulation valve.
Yang Luo, Zhenxing Wu, Zekai Li, Lang Cheng, Peihan Qi, Jiegang Mou   +5 more
openaire   +1 more source

Sonoluminescence from Bifrequency Excitation of Cavitation Bubbles

, 1986
The nonlinear response of a single bubble to a bifrequency excitation is much more significant than the linear response. This can have important consequences on the characteristics of acoustic cavitation.
Chiavola M. M., FRANCESCUTTO, ALBERTO, Carpenedo L., Ciuti P., NABERGOJ, RADOSLAV, Iernetti G.   +5 more
core  

Adhesive and molecular friction in tribological conjunctions [PDF]

, 2012
This thesis investigates the underlying causes of friction and ine ciency within an internal combustion engine, focusing on the ring-liner conjunction in the vicinity of the power-stroke top dead centre reversal.
Chong, William Woei Fong
core  

Investigation of the relationship between water quality variations and cavitation occurence in power plants [PDF]

, 2016
Lab experiments on clean water samples have revealed that water may withstand large tension; a state which could be explained as negative pressure, without occurrence of cavitation.
Ekanger, Jarle Vikør
core   +1 more source

Tailored D‐π Conjugation Boosts Piezocatalytic CO2 Reduction in a Platinum(II)‐Acetylide Framework

Advanced Science, EarlyView.
The highly conjugated metalII‐acetylide framework demonstrates efficient ultrasound‐driven conversion of CO2 to CO. The piezoelectric field generated by ultrasound facilitates electron transfer from the tetraphenylene π‐column to the MII‐bis(acetylide) moiety, enabling CO2 activation. Compared to PdII‐ and NiII‐based analogues, the stronger d–π orbital
Mude Zhu, Yingtang Zhou, Kai Wang, Xiaoyun Fan, Yang Ding, Wai‐Yeung Wong, Linli Xu   +6 more
wiley   +1 more source

Research on the influence of cavitator configuration on the cavitation flow characteristics around projectiles

Journal of Physics: Conference Series
Abstract In order to optimize the projectile head shape, numerical simulations were conducted on the cavitation flow field of different cavitator configurations, including inverted trapezium, hemispherical, and cylindrical cavitator configurations.
Xiaobin Qi, Fangchao Xia, Jiawen Wang, Huan Liu   +3 more
openaire   +1 more source

Targeting Dnmt3a/m5C/RelA Axis Attenuates Microglia Inflammatory Response and Improves Postoperative Recovery in Chronic Compressive Cervical Spinal Cord Injury

Advanced Science, EarlyView.
A pro‐inflammatory microglial subset persists after decompression in chronic compressive cervical spinal cord injury and shows enhanced Dnmt3a‐driven m5C signaling. By stabilizing RelA mRNA, this axis sustains NF‐κB activation and postoperative neuroinflammation.
Tianyu Qin, Yuan Jiang, Yongheng Xie, Huanwei Qu, Wenbin Yan, Jingle Chen, Yining Chen, Huayi Li, Naibo Feng, Jiajun Wu, Chao Zhang, Zhengqi Huang, Ming Shi, Zhihuai Deng, Guozhi Xiao, Houqing Long   +15 more
wiley   +1 more source