Results 71 to 80 of about 245,653 (257)

Effect of Oscillation on Perineal Pressure in Cyclists: Implications for Micro-Trauma

open access: yesSexual Medicine, 2018
Background: Genital numbness and erectile dysfunction in cyclists may result from repeated perineal impacts on the bicycle saddle (micro-trauma) that occur during routine cycling.
Thomas Sanford, MD   +6 more
doaj   +1 more source

Mechanism of Cloud Cavitation Generation on a 2-D Hydrofoil [PDF]

open access: yes, 2001
When a sheet cavity on a hydrofoil section attains a certain size, it starts violent periodical oscillation shedding a harmful cloud cavity downstream at each oscillation cycle. This phenomenon is due to the occurrence of the re-entrant jet.
Maeda, Masatusgu   +3 more
core  

Oscillation threshold of a clarinet model: a numerical continuation approach [PDF]

open access: yes, 2012
This paper focuses on the oscillation threshold of single reed instruments. Several characteristics such as blowing pressure at threshold, regime selection, and playing frequency are known to change radically when taking into account the reed dynamics ...
Almeida A.   +12 more
core   +2 more sources

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Numerical Study on Pressure Oscillations in a Solid Rocket Motor with Backward Step Configuration Under Two-Phase Flow Interactions

open access: yesAerospace
The pressure oscillation caused by vortex–acoustic coupling is one of the main gain factors that results in the combustion instability of motors. Focusing on a solid rocket motor with a backward step configuration that can generate a corner vortex, this ...
Chao Huo, Hongbo Xu, Jie Hu, Tengfei Luo
doaj   +1 more source

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

open access: yesAdvanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich   +6 more
wiley   +1 more source

Theoretical and Experimental Study on Rapid Decompression Oscillation in Altitude Chamber

open access: yesInternational Journal of Aerospace Engineering, 2022
Given the frequent airflow excitation phenomenon caused by the rapid decompression of the altitude chamber, the mathematical model of the nonlinear system of the rapid decompression of the altitude chamber is established.
Zifeng Tian   +5 more
doaj   +1 more source

Substrate Stress Relaxation Regulates Cell‐Mediated Assembly of Extracellular Matrix

open access: yesAdvanced Functional Materials, EarlyView.
Silicone‐based viscoelastic substrates with tunable stress relaxation reveal how matrix mechanics regulates cellular mechanosensing and cell‐mediated matrix remodelling in the stiff regime. High stress relaxation promotes assembly of fibronectin fibril‐like structures, increased nuclear localization of YAP and formation of β1 integrin‐enriched ...
Jonah L. Voigt   +2 more
wiley   +1 more source

Investigation on Pressure Oscillations Frequency for High Pressure Gas Double-hole Jet

open access: yesYuanzineng kexue jishu
For boiling water reactors and small reactors, an effective way to reduce containment pressure is to discharge gas from the containment into the suppression pool.
YIN Weikai1,2, OUYANG Yong1, CUI Xuyang1, JI Wenying1, GU Haifeng2
doaj   +1 more source

Analytical Determination of the Attack Transient in a Clarinet With Time-Varying Blowing Pressure

open access: yes, 2015
This article uses a basic model of a reed instrument , known as the lossless Raman model, to determine analytically the envelope of the sound produced by the clarinet when the mouth pressure is increased gradually to start a note from silence.
Almeida, A.   +3 more
core   +4 more sources

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