Results 21 to 30 of about 21,143 (274)

The Quantum Backflow Phenomenon [PDF]

open access: yes
It has been known since at least 1969, that there exist quantum states of a free particle on the line with purely positive momentum that exhibit probability transfer towards the negative half-line.
Kirk-Karakaya, Harkan
core   +4 more sources

An enigmatic route to the contralateral pelvicalyceal system on antegrade pyelogram

open access: yesJournal of Indian Association of Pediatric Surgeons, 2018
Introduction: The authors present the rare yet enigmatic phenomenon of ‘pyelo-renal’ backflow. Case Presentation: An eight-month-old boy with multiple congenital anomalies underwent left Anderson-Hynes Pyeloplasty for pelvi-ureteric junction obstruction.
Prabudh Goel   +2 more
doaj   +1 more source

Hydrodynamics and sediment transport in Poyang Lake under the effects of wind and backflow

open access: yesHydrology Research, 2023
The ecology of the aquatic environment in Poyang Lake, the largest fresh lake in China, is notably impacted by the backflow from the Yangtze River, which conveys a high flux of sediments.
Hongwu Tang   +6 more
doaj   +1 more source

Simulations to Eliminate Backflow Power in an Isolated Three-Port Bidirectional DC–DC Converter

open access: yesEnergies, 2022
The aim of this work was to eliminate the backflow power present in an isolated three-port DC–DC converter. Backflow power (which is an inherent property of phase-shifted DC–DC converters) is the major contributor of circulating current the converter ...
Norbert Njuanyi Koneh   +2 more
doaj   +1 more source

Improvement methods for thermal backflow phenomenon in engine compartment blow-type air cooler module

open access: yesCase Studies in Thermal Engineering, 2023
Regarding the thermal backflow problem in the central area of the engine compartment's blow-type cooler module, a computational model for the entire machine's outflow field is first established and validated using experimental results.
Jing Hu   +4 more
doaj   +1 more source

Research of impact of two kinds of check valve on vibration characteristics of long pipeline

open access: yesGong-kuang zidonghua, 2015
In order to study implementation effect of different check valves, vibration test was conducted in testing systems equipped with spring-loaded passive check valve and hydraulic active check valve respectively.
LYU Fuyan   +5 more
doaj   +1 more source

Spud-Can Penetration Response in Double Layered Soil by Press-Replace Technique [PDF]

open access: yesPort Said Engineering Research Journal, 2019
One of the most important factors in the process of jack-up rig installation is the good expectation of the amount of spud-can penetration into soil layers under the varying loads.
Mohamed Elgendy   +2 more
doaj   +1 more source

An Optimized Control Method of Soft-Switching and No Backflow Power for LLC Resonant-Type Dual-Active-Bridge DC-DC Converters

open access: yesMathematics, 2023
The LLC-type resonant dual-active-bridge (LLC-DAB) DC-DC converter with a high voltage gain, high power density, and low backflow power has attracted increasing attention in recent years.
Zimeng Li   +5 more
doaj   +1 more source

Backflow in relativistic wave equations

open access: yes, 2022
We show that, contrary to the statements made by many authors, the backflow is not a nonclassical effect. The backflow is a characteristic feature of solutions of the wave equations: quantum and classical.
Bialynicka-Birula, Zofia   +2 more
core   +1 more source

Experimental Study on Backflow Patterns Induced by a Bilateral Groin Pair with Different Spacing

open access: yesApplied Sciences, 2021
Groins are one of the popular manmade structures to modify the hydraulic flow and sediment response in river training. The spacing between groins is a critical consideration to balance the channel-depth and the cost of construction, which is generally ...
Cuiping Kuang   +4 more
doaj   +1 more source

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