Results 41 to 50 of about 2,894,703 (275)

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

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

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

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

The Palomar Transient Factory: System Overview, Performance and First Results [PDF]

, 2009
The Palomar Transient Factory (PTF) is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky. The transient survey is performed using a new 8.1 square degree camera installed on the 48-inch Samuel Oschin ...
Bildsten, L., Bloom, J. S., Brown, T., Cenko, S. B., Ciardi, D., Croner, E., Dekany, R. G., Djorgovski, S. G., Filippenko, A. V., Fox, D. B., Gal-Yam, A., Grillmair, C. C., Hale, D., Hamam, N., Helou, G., Henning, J. R., Howell, D. A., Jacobsen, J., Kasliwal, M. M., Kulkarni, S. R., Laher, R., Law, N. M., Mattingly, S., McKenna, D., Nugent, P. E., Ofek, E. O., Pickles, A., Poznanski, D., Quimby, R. M., Rahmer, G., Rau, A., Rosing, W., Shara, M., Smith, R., Starr, D., Sullivan, M., Surace, J., van Eyken, J. C., Velur, V., Walters, R. S., Zolkower, J.   +40 more
core   +2 more sources

Stressful Events Reported by Childhood Cancer Survivors and Community Controls From the St. Jude Lifetime (SJLIFE) Cohort: A Mixed Method Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Characterizing stressful events reported by childhood cancer survivors experienced throughout the lifespan may help improve trauma‐informed care relevant to the survivor experience. Methods Participants included 2552 survivors (54% female; 34 years of age) and 469 community controls (62% female; 33 years of age) from the St.
Megan E. Ware, Colter K. Clayton, Fang Wang, Sedigheh Mirzaei, Kyla Shelton, Tara M. Brinkman, Victoria Willard, Katianne M. Howard Sharp, Kevin Krull, Lindsay F. Schwartz, Melissa M. Hudson, Gregory T. Armstrong, Kirsten K. Ness, Rachel T. Webster   +13 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

Dynamic characteristics of enhanced Al/PTFE and real-time quantitative evaluation of impact release energy under vacuum environment

Results in Physics, 2021
Aluminum/Polytetrafluoroethylene (Al/PTFE) reactive material occurs chemical reaction and release a large amount of energy under the impact load, which has the dual characteristics of strength and energy release, so it can be applied to the attack of ...
Enling Tang, Zhimin Sun, Yafei Han, Wenhao Yu, Chuang Chen, Mingyang Xu, Mengzhou Chang, Kai Guo, Liping He   +8 more
doaj   +1 more source

On the use of the theory of dynamical systems for transient problems

, 2013
This paper is a preliminary work to address the problem of dynamical systems with parameters varying in time. An idea to predict their behaviour is proposed.
Galvanetto, Ugo, Magri, Luca
core   +1 more source

Utility of Computed Tomography Surveillance of Asymptomatic Infection in Children and Young Adults Before Allogeneic Hematopoietic Stem Cell Transplant

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Asymptomatic infection poses a significant risk for children undergoing hematopoietic stem cell transplantation (HSCT). Pre‐transplant surveillance computed tomography (CT) is commonly used to identify occult infection, though its diagnostic yield remains uncertain.
Tyler Obermark, Pradipta Debnath, Rama S. Ayyala, Lara A. Danziger‐Isakov, Jane Koo, Kasiani C. Myers, William R. Otto, Aki Tanimoto, Andrew T. Trout, Cara E. Morin   +9 more
wiley   +1 more source