Results 1 to 10 of about 69,112 (223)

Vertical Nanoscale Vacuum Channel Triodes Based on the Material System of Vacuum Electronics

Micromachines, 2023
Nanoscale vacuum channel triodes realize the vacuum-like transmission of electrons in the atmosphere because the transmission distance is less than the mean free path of electrons in air.
Panyang Han, Xinghui Li, Jun Cai, Jinjun Feng   +3 more
doaj   +5 more sources

The clinical efficacy of novel semirigid ureteroscopy with a vacuum suction device for treatment of >10 mm upper ureteral stones and impacted calculus: implications for clinical practice [PDF]

Frontiers in Surgery
ObjectiveThe novel semirigid ureteroscopy with a vacuum suction device has been increasing in the treatment of urinary stones recently. This study aimed to evaluate its clinical efficacy for treating >10 mm upper ureteral stones and impacted calculus ...
Longhui Lai, Longhui Lai, Yuanfeng Zhang, Yuanfeng Zhang, Yingru Wang, Enguang Yang, Guangrui Fan, Chaohu Chen, Kang Yao, Wenzhao Zhang, Wenzhao Zhang, Yongfei Liu, Yongfei Liu, Kai Zhu, Kai Zhu, Meixuan Ding, Meixuan Ding, Jinchun Xing, Zhiping Wang, Peide Bai, Tao Wang, Bin Chen, Jun Mi   +22 more
doaj   +2 more sources

Advanced reusable SAW-based particulate matter sensor with microheater and porous microstructured filter membrane for simultaneous PM10 and PM2.5 detection [PDF]

Microsystems & Nanoengineering
In this study, we present a novel reusable surface acoustic wave (SAW)-based particulate matter (PM) sensor system capable of simultaneously and selectively detecting PM10 and PM2.5. This is the first implementation of an integrated porous microstructure
Faisal Nawaz, Nuriddin Tavakkalov, Keekeun Lee   +2 more
doaj   +2 more sources

Designing of control and expulsion equipment for the pitot-static system of passenger airplanes

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2021
The article discusses the issue of automating the serial process of bleeding and control of the pitot- static system of passenger airplanes. A functional diagram and basic design of some parts of the combined equipment are proposed.
N. A. Zotin, E. P. Lisman
doaj   +1 more source

New Q and V-band ECE radiometer for low magnetic field operation on LHD [PDF]

EPJ Web of Conferences, 2023
To meet the demand for information on electron temperature fluctuations in low magnetic field experiments in the Large Helical Device (LHD), a new ECE radiometer covering the Q and V bands has been installed.
Tokuzawa Tokihiko, Goto Yuki, Kuwahara Daisuke, Nishiura Masaki, Shimizu Takashi   +4 more
doaj   +1 more source

Numerical Simulation of Transient Characteristics of Start-Up Transition Process of Large Vertical Siphon Axial Flow Pump Station

Frontiers in Energy Research, 2021
In order to explore the transient characteristics of the large-scale vertical siphon axial flow pumping station during the start-up and exhaust process, numerical simulations were carried out on the start-up process of the axial flow pumping station ...
Xiaowen Zhang, Fangping Tang, Chao Liu, Lijian Shi, Haiyu Liu, Zhuangzhuang Sun, Wenzhu Hu   +6 more
doaj   +1 more source

Primary observations of solar filaments using the multi-channel imaging system of the New Vacuum Solar Telescope [PDF]

Proceedings of the International Astronomical Union, 2013
AbstractThe New Vacuum Solar Telescope (NVST) is a new generation ground-based solar facility of China. One of the post-focus instruments is the multi-channel high-resolution imaging system, which is designed to simultaneously observe the dynamic gas motion in the solar photosphere and chromosphere.
Zhi Xu, Zhen Y. Jin, Fang Y. Xu, Zhong Liu   +3 more
openaire   +1 more source

Development of Multi Sample Array System Based on Pneumatic Valve [PDF]

한국정밀공학회지, 2017
We present a multi-sample array device based on a pneumatic system. Solenoid valves were used to control a micro valve in a pneumatic system. The use of a compressor together with a vacuum pump ensured that one outlet could supply both compression and ...
Chul Min Kim, Seo Jung Park, Gyu Man Kim
doaj   +1 more source

Trans-Media Continuous-Variable Quantum Key Distribution via Untrusted Entanglement Source

IEEE Photonics Journal, 2021
We propose a continuous-variable quantum key distribution (CVQKD) scheme based on the atmosphere-to-seawater channel. In particular, an untrusted entanglement source (two modes of the compressed vacuum state, TMSV) is deployed on the surface of the ...
Ying Guo, Qingquan Peng, Qin Liao, Yijun Wang   +3 more
doaj   +1 more source

Experimental demonstration of confidential communication with quantum security monitoring

Scientific Reports, 2021
Security issues and attack management of optical communication have come increasingly important. Quantum techniques are explored to secure or protect classical communication.
Yupeng Gong, Adrian Wonfor, Jeffrey H. Hunt, Ian H. White, Richard V. Penty   +4 more
doaj   +1 more source