76 research outputs found

    WRIT 101.10: College Writing I

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    A Diamond Thin Film Flow Sensor

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    We present the results of theoretical modeling and experimental testing of a diamond thin film sensor for flow studies. It is shown that the high thermal conductivity of a diamond film can enhance the frequency response of the flow sensor. One-dimensional heat diffusion equation was solved using the finite difference method for determining the frequency response. Two different sensor structures were analyzed: a Ni film on a quartz substrate (Ni/Q) and an intermediate layer of diamond film between the Ni film and quartz substrate (Ni/D/Q). The theoretical model predicts a frequency response for the Ni/D/Q sensor higher than that of the Ni/Q sensor. Diamond films for the Ni/D/Q sensor were deposited onto the quartz substrate by microwave plasma-enhanced chemical vapor deposition (MPECVD). The conditions for a high nucleation density were established for obtaining a continuous diamond thin film. A subsequent nickel film patterned and deposited serves as the sensing arm in the bridge circuit of an anemometer. The measured frequency response of the Ni/D/Q sensor combination is greater than 220 kHz, as compared to the Ni/Quartz sensor response of 120 kHz

    Aquilegia, Vol. 34 No. 1, Spring 2010, Newsletter of the Colorado Native Plant Society

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    https://epublications.regis.edu/aquilegia/1131/thumbnail.jp

    Rahasia melejitkan daya ingat otak hanya dalam 7 hari

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    buku ini membongkar kesalahkaprahan pemahaman kita selama ini tentang "daya ingat" (melahirkan orang pintar) versus "daya lupa" (melahirkan orang bodoh), yang cenderung menempatkan kemampuan mengingat (memory power) sebagai faktor genetik, bawaan, sehingga tidak bisa diubah. salah! jangan gadaikan masa depan kesuksesan anda pada pandangan negatif tersebut.iv, 323 hlm, 19,9 x 13,8 c

    Preparations for testing a full scale OH-6A rotor system with HHC installed

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    In the 1970's and 198O's Hughes Helicopters, now McDonnell Douglas Helicopters, in conjunction with the U. S. Army and NASA developed and flight tested the first successful Higher Harmonic Control system for the purpose of reducing helicopter vibration levels. In addition to the reduced vibration levels interesting benefits were also noticed in the areas of acoustic signature and helicopter power requirements. For many years the reduced power requirements could not be explained and therefore were downplayed and not publicized. In the past three years research at the Naval Postgraduate School has been conducted regarding this phenomena and it has been sufficiently explained. The next step in the process is to mount a full scale OH-6A main rotor system on a test stand and conduct testing in order to validate the earlier documented power savings. This thesis documents efforts that have been made in 1994 and 1995 towards accomplishing that goal.http://archive.org/details/preparationsfort1094531444U.S. Marine Corps (U.S.M.C.) author
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