Results 61 to 70 of about 290,148 (203)

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

Sexual 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, Adam J. Gadzinski, MD, MS, Thomas Gaither, BS, E. Charles Osterberg, MD, Greg P. Murphy, MD, Peter R. Carroll, MD, MPH, Benjamin N. Breyer, MD, MAS   +6 more
doaj   +1 more source

Shubnikov-de Haas oscillations spectrum of the strongly correlated quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Br)]2 under pressure [PDF]

, 2008
Pressure dependence of the Shubnikov-de Haas (SdH) oscillations spectra of the quasi-two di- mensional organic metal (ET)8[Hg4Cl12(C6H5Br)]2 have been studied up to 1.1 GPa in pulsed magnetic fields of up to 54 T. According to band structure calculations,
Audouard, Alain, Canadell, Enric, Lyubovskaya, Rimma N., Lyubovskii, Rustem B., Nardone, Marc, Vignolles, David, Zhilayeva, Elena I.   +6 more
core   +4 more sources

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

Aerospace
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

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

Yuanzineng 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

Theoretical and Experimental Study on Rapid Decompression Oscillation in Altitude Chamber

International 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, Jianfeng Lu, Zhao Gu, Lihua Yu, Hao Zhou, Lijun Yang   +5 more
doaj   +1 more source

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

, 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., Bergeot, Baptiste, Gazengel, B., Vergez, C   +3 more
core   +4 more sources

Theoretical and experimental study of radiation pressure-induced mechanical oscillations (parametric instability) in optical microcavities [PDF]

, 2006
Radiation pressure can couple the mechanical modes of an optical cavity structure to its optical modes, leading to parametric oscillation instability. This regime is characterized by regenerative oscillation of the mechanical cavity eigenmodes.
Carmon, T., Kippenberg, T. J., Rokhsari, H., Vahala, K. J.   +3 more
core   +1 more source

Study on Combustion Oscillation of Premixed Flame with Pilot Fuel at Elevated Pressures

Journal of Thermal Science and Technology, 2009
Acoustically-coupled combustion oscillation is studied for premixed flame with pilot fuel to be used in gas turbine combustors. Premixed gas is passed through swirl vanes and burnt with the centrally injected pilot fuel.
Masaya OHTSUKA, Shohei YOSHIDA, Yoshitaka HIRATA, Nariyoshi KOBAYASHI   +3 more
doaj   +1 more source

Investigation of temporal variation of combustion instability intensity in a back step combustor using LES

Journal of Thermal Science and Technology, 2020
Lean combustion is susceptible to combustion instabilities, especially pressure oscillation, and this severely damages the combustor. To prevent this, many studies have attempted to elucidate this phenomenon.
Jun NAGAO, Abhishek L. PILLAI, Ryoichi KUROSE   +2 more
doaj   +1 more source

Improvement of a large-amplitude sinusoidal pressure generator for dynamic calibration of pressure transducers [PDF]

Results of research on the improvement of a sinusoidal pressure generator are presented. The generator is an inlet-area-modulated, gas-flow-through device (siren type) which was developed to dynamically calibrate pressure transducers and pressure probes.
Robinson, R. E.
core   +1 more source