Results 21 to 30 of about 601,437 (304)
Monitoring of lubricant film failure in a ball bearing using ultrasound [PDF]
, 2006 A lubricant-film monitoring system for a conventional deep groove ball bearing (type 6016, shaft diameter 80 mm, ball diameter 12.7 mm) is described. A high-firequency (50 MHz) ultrasonic transducer is mounted on the static outer raceway of the bearing ...
Anderson +21 more
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Wave reflection in semiconductor nanostructures
Theoretical and Applied Mechanics Letters, 2018 : Based on nonlocal thermoelastic theory, this article studies the reflection of waves in nanometer semi-conductor media. Firstly, the governing equations are established based on coupled nonlocal elasticity theory, plasma diffusion equation, and moving ...
Feixiang Tang, Yaqin Song
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Negative reflection coefficients [PDF]
Transactions of the Faraday Society, 1965 The reflection coefficient of porous Vycor glass towards aqueous solutions of polyethylene glycol, measured by ultrafiltration, has negative values at lower polymer concentrations. This is in qualitative agreement with the abnormally low and negative values of the apparent osmotic pressure found by Elias for such systems.
Talen, J.L., Staverman, A.J.
openaire +1 more source
, 2006 We study the duality between the two dimensional black hole and the sine-Liouville conformal field theories via exact operator quantization of a classical scattering problem.
A. Giveon +12 more
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A study of disordered systems with gain: Stochastic Amplification [PDF]
, 2000 A study of statistics of transmission and reflection from a random medium with stochastic amplification as opposed to coherent amplification is presented.
Jayannavar, A. M., Joshi, Sandeep K.
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Reflection coefficient of a dominant mode in a pentafurcated duct
Boundary Value Problems, 2017 This paper presents the diffraction of acoustic plane wave through a semi-infinite soft duct. The soft plates are enclosed symmetrically inside an infinite duct with hard boundary conditions.
Mahmood-ul-Hassan, Mahvish Naz
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Auto-calibration of ultrasonic lubricant-film thickness measurements [PDF]
, 2007 The measurement of oil film thickness in a lubricated component is essential information for performance monitoring and design. It is well established that such measurements can be made ultrasonically if the lubricant film is modelled as a collection of ...
Astridge D G +9 more
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Broadband Matching via Reflection Coefficient Modeling
Electrica, 2016 In this paper, a practical method is presented to design broadband matching networks via reflection coefficient modeling. In the proposed algorithm, reflection function values () at sample frequencies are optimized to get the desired gain level.
Metin ŞENGÜL
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Optimal design for the artificial‐noise‐aided IRS‐MIMO‐OFDM secure communications
IET Communications, 2022 This paper discusses an artificial noise‐aided intelligent reflecting surface‐MIMO–OFDM system physical layer secure communication, in which two cases for the intelligent reflecting surface reflection coefficient models are considered separately, that is
Jingya Ren +4 more
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Energy Reports, 2022 Wave energy is a kind of renewable and clean energy. When waves meet the breakwaters, wave energy reflection will happen. In this paper, the modified mild slope equation for waves propagating over the permeable seabed is introduced, and the finite ...
Qian Gong +5 more
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