Results 31 to 40 of about 1,867,403 (306)

Thickness configuration optimization of B4C/UHMWPE composite armor under varying impact velocities and areal densities through numerical and experimental study

Scientific Reports
This study aims to optimize the ceramic-to-backing thickness ratio (R th ) of B4C/UHMWPE composite armor to enhance the anti-penetration performance while maintaining lightweight requirements.
Hongfei Wang, Kui Tang, Jinxiang Wang, Haiping Song, Yuanbo Li, Xingwang Chen, Hanxin Gong, Yiming Ma   +7 more
doaj   +1 more source

Response of underwater cylindrical shell subjected to supercavitating projectile trans-medium penetration: Experiment and simulation

Defence Technology
To investigate the dynamic response of the cylindrical shell targets to supercavitating projectile trans-medium penetration and the penetration mechanism, experiments and numerical simulations were conducted.
Yiming Ma, Kui Tang, Lingquan Kong, Hanxin Gong, Minhui Gu, Chao Cao, Jinxiang Wang   +6 more
doaj   +1 more source

Safety of Daprodustat for the Treatment of Chronic Kidney Disease Anemia: Final Analysis of a Multicenter Postmarketing Surveillance Study in Japan

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction This final analysis of a multicenter, prospective postmarketing surveillance study evaluated the safety of daprodustat in patients with chronic kidney disease anemia in routine clinical practice in Japan. Methods Patients who initiated daprodustat between September 2020 and July 2022 were registered.
Tadao Akizawa, Kyomi Kanaya, Kiyomi Aizawa, Masanori Onoki, Hirofumi Ozeki, Kazuko Suzuki, Ai Hayashi, Tomohiko Asamura   +7 more
wiley   +1 more source

Cavitation motion characteristics of near-wall supercavitating vehicle

Kongqi donglixue xuebao
Supercavitation technology is of great significance in reducing drag and enhancing the range of supercavitating vehicles. When a vehicle navigates in proximity to the underwater terrain, the rigid wall exerts a substantial influence on the cavitation ...
Yuting HU, Zhiyuan WANG, Zhihao TANG, Xin ZHANG, Xin YUAN, Zijie ZHAO, Qi DAI   +6 more
doaj   +1 more source

Modeling and simulation of muzzle flow field of railgun with metal vapor and arc

Defence Technology, 2020
During the electromagnetic railgun launching process, there will be a complex flow field with high temperature in the muzzle area because of the high-speed friction, transition and secondary arc-ignition. This paper models the muzzle area of railgun when
Yuan Gao, Yan-jie Ni, Zhao-xin Wang, Ying-tao Xu, Yong Jin, Bao-ming Li   +5 more
doaj   +1 more source

Coupling effect of impact and in-layer voltage on flexoelectricity of PDMS laminated structures

Polymer Testing, 2022
The low flexoelectric coefficients of polymers are the key problem that limit their application. In this paper, electret-like PDMS/metal conductive layer/PDMS laminated structures have been prepared, an internal electric field are applied on the metal ...
Mengzhou Chang, Ke Li, Chang Liu, Bingyu Leng, Kai Guo, Chuang Chen, Yafei Han, Liping He, Enling Tang   +8 more
doaj   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin, Berrak Itır Aylı, Nüket Paksoy   +2 more
wiley   +1 more source

Numerical study on the supercavitating flow around an underwater high-speed projectile near the unsteady free surface

AIP Advances
When a high-speed projectile navigates underwater near the surface, the unsteady free surface changes the surrounding flow velocity and pressure distribution, which affects the supercavitating flow pattern and hydrodynamic characteristics. Therefore, the
Yunxia Xu, Xin Yuan, Xin Zhang, Chi Zhang, Yuyang Yang, Jiahe Li, Zijie Zhao, Qi Dai   +7 more
doaj   +1 more source

Investigations on the Effects of Vortex-Induced Vibration with Different Distributions of Lorentz Forces

Applied Sciences, 2017
The control of vortex-induced vibration (VIV) in shear flow with different distributions of Lorentz force is numerically investigated based on the stream function–vorticity equations in the exponential-polar coordinates exerted on moving cylinder for Re =
Hui Zhang, Meng-ke Liu, Bao-chun Fan, Zhi-hua Chen, Jian Li, Ming-yue Gui   +5 more
doaj   +1 more source

Analysis of sliding electric contact characteristics in augmented railgun based on the combination of contact resistance and sliding friction coefficient

Defence Technology, 2020
The contact resistance between the armature and rails is an important indicator of the contact characteristics in electromagnetic launches. As the contact resistance depends not only on the contact state but also on the contact stress and temperature ...
Chun-yan Zhu, Bao-ming Li
doaj   +1 more source