Results 261 to 270 of about 54,904 (305)
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, 2021
The temperature distribution characteristics in tunnel fire scenarios are not only crucial for evaluating the hot damage of tunnel structure, but also pivotal fundation to study the smoke kinetic characteristics.
Tianhang Zhang +5 more
semanticscholar +1 more source
The temperature distribution characteristics in tunnel fire scenarios are not only crucial for evaluating the hot damage of tunnel structure, but also pivotal fundation to study the smoke kinetic characteristics.
Tianhang Zhang +5 more
semanticscholar +1 more source
Optimal Design Method of LLC Half-Bridge Resonant Converter Considering Backflow Power Analysis
IEEE transactions on industrial electronics (1982. Print), 2021LLC half-bridge converters have been extensively studied in low power industrial applications. However, the phase shift angle between the voltage and current of the LLC resonant network makes the converter have power circulation, that is, backflow power.
Zhe Shi +4 more
semanticscholar +1 more source
Effect of different sealing caps on the backflow of short-term dialysis catheters: A bench study
Journal of Vascular AccessBackground: Needle-free connectors (NFCs) are recommended as closure systems for peripheral and central vascular catheters to reduce needlestick injuries and infections, while potentially reducing blood reflux.
Daniele Privitera +9 more
semanticscholar +1 more source
Precursors of backflow events and their relationship with the near-wall self-sustaining process
Journal of Fluid Mechanics, 2021This study examines the precursors and consequences of rare backflow events at the wall using direct numerical simulation of turbulent pipe flow with a high spatiotemporal resolution.
Byron Guerrero, M. Lambert, R. Chin
semanticscholar +1 more source
Optical Technologies for Telecommunications 2020, 2021
Using electronic beam lithography and ion etching we manufactured a metalens with diameter 30 μm, focal length 633 nm and relief depth of 130 nm. The metalens consists from 16 sector subwavelength binary gratings with period 220 nm. The proposed metalens generates a left-hand circularly polarized optical vortex with topological charge 2 when it is ...
Sergey S. Stafeev +4 more
openaire +1 more source
Using electronic beam lithography and ion etching we manufactured a metalens with diameter 30 μm, focal length 633 nm and relief depth of 130 nm. The metalens consists from 16 sector subwavelength binary gratings with period 220 nm. The proposed metalens generates a left-hand circularly polarized optical vortex with topological charge 2 when it is ...
Sergey S. Stafeev +4 more
openaire +1 more source
INSTALLING BACKFLOW PREVENTERS
Journal AWWA, 1970The author comments on Mr. William E. West's article entitiled “Auxiliary Water Supplies and Cross‐ Connection Control”, published in the August 1969 Journal AWWA issue (pp. 401‐402). He expresses doubt as to whether the procedures described in the “Current Procedures” section of the paper comply with the California Administrative Code.
Paul Buus, W. E. W.
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Urinomas secondary to pyelosinus backflow
Urologic radiology, 1983Pyelosinus backflow of urine usually occurs through infractions of the calyceal fornices from obstruction or retrograde study. The primary cause appears to be a rapid rise in intrapelvic pressure with the backflow representing a physiologic release mechanism which returns the intrapelvic pressure to normal.
R M, Friedenberg, H, Moorehouse, M, Gade
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Three-dimensional backflow at liquid–gas interface induced by surfactant
Journal of Fluid Mechanics, 2020A liquid–gas interface (LGI) on submerged microstructure surfaces has the potential to achieve large slip velocities, which is significant for underwater applications such as drag reduction.
Hongyuan Li +7 more
semanticscholar +1 more source
A pneumatically controlled microfluidic rectifier enabling zero backflow under pulsatile flow regime
Journal of Micromechanics and Microengineering, 2021A pulsatile microfluidic pump transports discrete volume to specific target locations. However, backflow in the pulsatile microfluidic pump often decreases the pumping efficiency and causes unwanted sample mixing due to unsteady boundaries. Employing the
Ali Khodayari Bavil +3 more
semanticscholar +1 more source
Mechanism of Renovascular Backflow
Radiology, 1969PYELOVASCULAR backflow has been observed since the earliest days of urography. Little understood, it has been the basis for much controversy. Little clinical significance has been attributed to it. We have repeated and added to earlier work done in the investigation of pyelovascular backflow.
N, Green, A G, Fingerhut, S, French
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