Results 71 to 80 of about 246,393 (287)

Underwater Sonography of Leg Veins [PDF]

, 2018
Objectives: Hydrostatic compression (HC) occurring during body immersion is considered beneficial for venous return from the lower limbs. No study has evaluated the effects of HC on the veins of the lower limbs using duplex ultrasound (DU).
Evi Kalodiki, Kalodiki E, Christopher Lattimer, Alberto Caggiati, Giorgio Bergamo, Sara Oberto, Dimitrios Kontothanassis, Caggiati A, Lattimer C, Oberto S, Bergamo G, The Underwater Compression Group, Kontothanassis D   +12 more
core   +1 more source

Programmable Sequential 4D Actuation in Multistable Kirigami Metamaterials

Advanced Science, EarlyView.
This study presents a modular kirigami metamaterial framework enabling programmable multistability and sequential 4D actuation. By coupling geometry‐controlled multistability with material‐dependent recovery kinetics, spatiotemporal deformation can be precisely programmed.
Eui‐Hyun Kim, Minsung Kim, Hyunsik Yoon, Keun Park   +3 more
wiley   +1 more source

Study on Damage Behavior and Anti-Explosion Performance of Steel Fiber-Reinforced Cellular Concrete Under Underwater Contact Explosion

Buildings
To explore the damage mitigation mechanism of steel fiber-reinforced cellular concrete (SFR-CC) under underwater explosion loading, this study systematically analyzes two key variables: steel fiber volume fraction (0.5%, 1.0%, 1.5%, and 2.0%) and ...
Hu Huang, Shubo Dai, Kelei Cao, Changxing Tang, Xiancai Zhang, Changhui Zhang, Qingming Qiu   +6 more
doaj   +1 more source

Underwater shock and bubble pulse responses of a rectangular plate subjected to underwater explosion

, 2017
In recent years, the primary concern in naval engineering and offshore structure research is predicting how submerged structures are damaged by underwater explosion (UNDEX).
Hsu, Ching-Yu;Teng, Tso-Liang;Liang, Cho-Chung;Nguyen, Hai-Anh;Shih, Chien-Jong
core  

Adaptive Conductive Systems: Enabling Deformable Electronics Through Engineered Materials, Circuits, and Intelligent Systems

Advanced Science, EarlyView.
This review presents the research advances of adaptive conductive systems from the perspective of materials, circuits, systems, and applications. Deformable conductors consist of substrates/matrices and conductive materials, structural design of circuit interconnections, fabrication of circuit interconnections, as well as intelligent systems ...
Yufei Lu, Siyu Liang, Jingyi Niu, Jie Chen, Shuo Zhang, Hongjian Zhang, Dongsheng Jia, Wei Huang   +7 more
wiley   +1 more source

Study on the Mass Loss Characteristics of Underwater Explosion Bubble Pulsation

Applied Sciences
The underwater explosion bubble is one of the primary loads generated by underwater explosive detonations, and the presence of complex detonation products results in its unique physical evolution characteristics. Based on classical bubble dynamics theory,
Tan Lu, Yuan Gao, Libo Ding, He Zhang
doaj   +1 more source

Expanding Genetic Code to Generate Human Brain Organoids with Both Vasculature and Microglia‐Like Cells

Advanced Science, EarlyView.
Using genetic code expansion, we engineered vascularized human cerebral organoids (vhCOs) with microglia‐like cells and blood‐brain barrier features. vhCOs recapitulate neurovascular interactions, regional identities, and neuronal subtypes resembling the fetal brain.
Haishuang Lin, Yaqing Wang, Hu Du, Yuxin Qin, Haoyu Zhang, Peng Wang, Lin Wei, Jianhua Qin   +7 more
wiley   +1 more source

Damage response of hull structure subjected to contact underwater explosion [PDF]

, 2019
A high-pressure shock wave was produced during a process near-field underwater explosion, which led to serious damage into structures. A Smooth Particle Hydrodynamic (SPH) method is suitable for solving problems with large deformations. Hence, it is used
Longkan, Wang, Haoliang, Hu, Zhifan, Zhang   +2 more
core   +1 more source

Numerical Simulation Accuracy Study of Underwater Explosion Shock Waves

水下无人系统学报
In the numerical simulation study of the underwater explosion, the grid size and the artificial viscosity coefficient of the primary term have a large impact on the calculation results of the peak pressure of the shock wave.
Qiyuan AO, Xi LU, Zhiya JIANG, Poge KANG
doaj   +1 more source

Vine‐Inspired Soft Robotics: Materials, Actuations, and Emerging Applications

Advanced Science, EarlyView.
Vine‐inspired robots grow from the tip, enabling navigation through confined spaces with minimal disturbance. This Review summarizes material and actuation strategies for vine‐inspired growth, key functions including steering, retraction, attachment, branching, and variable stiffness, and emerging applications spanning medical intervention, confined ...
Jiahao Wu, Xingyun Liu, Fangzhou Wang, Huili Ren, Chaojun Zhang, Ziyu Ren, Zunqi Liu, Jing Li   +7 more
wiley   +1 more source