Results 21 to 30 of about 109,007 (299)
Computational studies of resonance wave pumping in compliant tubes [PDF]
, 2008 The valveless impedance pump is a simple design that allows the producion or amplification of a flow without the requirement for valves or impellers. It is based on fluid-filled flexible tubing, connected to tubing of different impedances.
Avrahami, Idit, Gharib, Morteza
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The impact of pneumatic tube transport on whole blood coagulation and platelet function assays
Platelets, 2018 Pneumatic tube is an attractive way to transport blood samples from the emergency department to the central laboratory facility. We aimed to investigate the impact of pneumatic tube transportation on blood samples for analysis of whole blood coagulation ...
Peter H. Nissen +3 more
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Materials Research Letters, 2022 We developed a sound absorber using a magnetorheological fluid(MR-F) based on the density and alignment angle of carbonyl iron powder(CIP) chains by the controlling the magnetic field strength and direction.
Hao Cheng +3 more
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A novel technique for measuring the reflection coefficient of sound absorbing materials [PDF]
, 2000 A new method to measure the acoustic behaviour of sound absorbing material in an impedance tube is presented. The method makes use of a novel particle velocity sensor, the microflown, and a microphone.
Bree, H-E. de +2 more
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A bifurcated circular waveguide problem [PDF]
, 1995 This is a pre-copy-editing, author-produced PDF of an article accepted for publication in IMA Journal of Applied Mathematics following peer review. The definitive publisher-authenticated version A D Rawlins. A bifurcated circular waveguide problem.
Rawlins, AD
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The Measurement of Low Frequency Impedance Using an Impedance Tube
Journal of Low Frequency Noise, Vibration and Active Control, 1998 An accurate and reliable prediction of car interior noise would be a significant step towards improving the design of car body panels and trim for a quieter vehicle. Automobile noise is dominated by low frequencies, from 50 to 300 Hz and therefore a technique is necessary to measure acoustic impedance of the trim materials at low frequencies.
C Peng, D Morrey, P Sanders
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Using a side-branched volume to tune the acoustic field in a looped-tube travelling-wave thermoacoustic engine with a RC load [PDF]
, 2017 Travelling-wave thermoacoustic engine utilises a compact acoustic network to obtain a right time-phasing between the acoustic velocity and pressure oscillations within the regenerator to force gas parcels to experience a Stirling-like thermodynamic cycle.
Al-Kayiem, Ali, Yu, Zhibin
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Positron, 2017 Telah dilakukan pembuatan alat impedance tube sesuai dengan standar ISO 10534-2: 1998 [2] yaitu dimensi tabung 10 cm, ketebalan tabung 5 mm, jarak antara sumber suara dengan microphone terdekat 70 cm, jarak antara sampel dengan microphone terdekat 21 cm,
Azis Eko Prakoso +5 more
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Zhongguo Jianchuan YanjiuObjectiveAs specific and demanding requirements are imposed by measuring the impedance of the anechoic coatings on the hull surface of an underwater vehicle using the traditional water-filled tube experiment, a method of sound absorption coefficient ...
Fan ZHANG +3 more
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Narrow-band impedance of a round metallic pipe with a low conductive thin layer
Physical Review Special Topics. Accelerators and Beams, 2014 The new traveling wave structure with a single synchronous mode resonantly excited by the relativistic charge is presented. The structure is composed of a metallic tube with an internally coated low conductive thin layer.
M. Ivanyan +3 more
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