Results 11 to 20 of about 412,475 (161)

Optimizing Ultra-High Vacuum Control in Electron Storage Rings Using Fuzzy Control and Estimation of Pumping Speed by Neural Networks with Molflow+

open access: yesSystems, 2023
This paper presents the design of a fuzzy-controller-based ultra-high vacuum pressure control system and its performance evaluation for a sputter-ion vacuum pump used in the electron storage ring at the Synchrotron Light Research Institute (Public ...
Soontaree Seangsri   +4 more
doaj   +1 more source

The Vacuum Impedance and Unit Systems [PDF]

open access: yesIEICE Transactions on Electronics, 2009
In electromagnetism, the vacuum impedance $Z_0$ is a universal constant, which is as important as the velocity of light $c$ in vacuum. Unfortunately, however, its significance does not seem to be appreciated so well and sometimes the presence itself is ignored.
openaire   +2 more sources

Accelerator vacuum systems at DESY [PDF]

open access: yesJournal of Physics: Conference Series, 2008
The research center DESY in Germany is one of the leading accelerator centers worldwide. At the facilities located in Hamburg more than 3000 scientists from all over the world do research with photons and in the field of particle physics. Since 1992 the 6-km-long HERA storage ring was used for high energy collisions of electrons/positrons and protons ...
openaire   +3 more sources

Analysis of New Vacuum Caterpillar Structure Drive System for Solar Panel Cleaning Robot [PDF]

open access: yes한국정밀공학회지, 2018
In this paper, we studied a new vacuum caterpillar drive system that can be used for solar panel cleaning robots. The conventional vacuum caterpillar structure has an issue, in that the vacuum hose becomes twisted.
Byuck Kyung Seong   +2 more
doaj   +1 more source

Gas-Dynamic Specifications of Glow Discharge During Ion Nitriding Process

open access: yesНаука и техника, 2018
Ion-plasma nitriding in glow discharge is a widely used method of surface hardening in the industrialized countries of the world and it is the most modern and technological type of surface hardening of machine parts, molds, dies and cutting tools ...
M. N. Bosyakov, A. A. Kozlov
doaj   +1 more source

Demonstration of the possibilities of reconstructive surgical interventions for closure of the exposed bones of the facial skeleton and cranial vault due to extensive defects of various etiologies

open access: yesГений oртопедии, 2021
Introduction Surgical treatment of patients with tissue defects of the scalp and face is challenging for surgeons. It is an integral part of the social and labor rehabilitation of such patients.
Sergey B. Bogdanov   +5 more
doaj   +1 more source

The Investigation of Plume-Regolith Interaction and Dust Dispersal during Chang’E-5 Descent Stage

open access: yesAerospace, 2022
The plume-surface interaction that occurs as a result of a variable-thrust engine exhaust plume impinging on soil during landings is critical for future lunar mission design.
Haiyan Zhang   +8 more
doaj   +1 more source

IN-LINE SPUTTERING COATER OF HYDROPHOBIC ANTIREFLECTION COATING FOR SENSOR DISPLAYS

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The aim of the work is to develop vacuum technological equipment for deposition an interference antireflection coating with the evaporation of a hydrophobic protective layer in a single vacuum cycle.
A. S. Myslivets   +2 more
doaj   +1 more source

The steady-state of probe susceptibility in a four-level N-type atomic system with a squeezed vacuum field

open access: yesResults in Physics, 2021
The gain, absorption and dispersion properties of a probe field for a four level N-type atomic system with a normal vacuum and a squeezed vacuum fields is studied.
A.M. Awad, M.S. Badr, A.A. El-Rahman
doaj   +1 more source

Efficiency of aft diffusers in vacuum systems of test benches for high-altitude firing tests of low-thrust liquid rocket engines

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The article presents the results of calculations and experimental studies of a vacuum system with an aft diffuser for high-altitude firing tests of low-thrust liquid rocket engines.
R. N. Galperin   +5 more
doaj   +1 more source

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