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  • Operations & Maintenance Best Practices - A Guide to Achieving Operational Efficiency (Release 3)
    Parabolic dish used with ultrasonic detector greatly extends detection range abilities.
  • Operations and Maintenance Best Practices--A Guide to Achieving Operational Efficiency
    Parabolic dish used with ultrasonic detector greatly extends detection range abilities.
  • O&M Best Practices - A Guide to Achieving Operational Efficiency (Release 2.0)
    Parabolic dish used with ultrasonic detector greatly extends detection range abilities.
  • The GIE S2A Full-Scale Aero-acoustic Wind Tunnel
    ...2x2 m2 array located out-of-flow, correction for acoustic image shift due to the shear layers, integration of the visual and acoustic images) Exterior parabolic microphone ( parabolic dish with a single microphone... ...free-field microphones) Standalone ultrasonic noise leak detection system...
  • Manual railway infrastructure
    Parabola , 30 cubic, 619 parallel direction of rail path and road, 330 person web... ...water pressure, 184, 205 pore water overpressure, post fuse, 657 potential compensation, 143 plate compression test, preventive loops... ...voltage measurement 92, 92 ultrasonic testing, visual, 92 eddy...
  • Composite insulators and their aging: An overview
    Since electrical discharges generate audible noise, this can be detected using a microphone mounted on a parabolic dish , to create a structure like ear, along with a high gain amplifier[28] . Phillips et al. have investigated the possibility of using ultrasonic emission to detect faulty insu- lators.
  • http://dspace.mit.edu/bitstream/handle/1721.1/40563/32170038.pdf?sequence=1
    ...a hollow aluminum pole (which provided support) was an 18-inch diameter radar dish - with an omnidirectional... The parabolic reflectors were included for two reasons: to make the microphones directional and to determine if... ...inches apart were positioned on a mounting box (Radio Shack in Assembly A, ultrasonic in Assembly B).
  • http://www.isa.org/Content/Microsites546/Water_Wastewater_Division/Home544/Newsletter8/WWID_newsletter_2001summer.pdf
    Like ultrasonic transmitters, the radar gage still requires some form of energy reflected from the target (typically... The two principle types of gages available are the horn and parabolic dish type antennas.
  • CR4 - Thread: The Perendev Magnetic Motor
    To be honest, I'm interested in the ultrasonic device because I like non-lethal weapons. I was toying around with an idea of a capacitor bank discharging thru an scr to a wire that would explode in a parabolic dish for a stun effect--flash-bang with maybe a disorienting EMF pulse.
  • Technical acoustics
    parabolic hopper 422 of the parabolic reflectors 388 parametric loudspeakers 584, 667 Particle image Velocimetry (PIV) 707 Pegel mass... ...of 319 ceramic polymeric 319 Pistofon calibration 392 ff noise abatement primary to frequency range 393 accuracy 393 plate flexural moment 120 torsional... ...204 ff pulse-echo-mode activity 850 pump noises 265 dot image function (point spread Function) 562 point radiators 139 sound power 140 PVDF pyroelectric to 345 PVDF membrane hydrophones 476 PVDF needle hydrophones 474 PVDF ultrasound transducers 320 344 ff...


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