Zobrazeno 1 - 10
of 10
pro vyhledávání: '"N. V. Frederick"'
Autor:
N. V. Frederick, B. A. Younglove
Publikováno v:
International Journal of Thermophysics. 13:1033-1041
The speed of sound in air has been measured along isotherms for a “standard air” mixture (0.7811 N2+0.2097 O2+0.0092 Ar) in the gas and liquid phases at pressures to 14 MPa. A cylindrical resonator was used in the vapor and supercritical gas phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae04300e3e2ce0cb0008b4605d23a9c1
https://doi.org/10.1007/bf01141213
https://doi.org/10.1007/bf01141213
Autor:
N. V. Frederick, B. A. Younglove
Publikováno v:
International Journal of Thermophysics. 11:897-910
A description of a fixed-path length acoustic resonator which uses electrostatic transducers for sound generation and detection is given. Also, a summary of the measurements on 13 binary and 4 multicomponent gas mixtures of natural gas components is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78aab94ef3e4ce5ae7795595b03e6dae
https://doi.org/10.1007/bf00503582
https://doi.org/10.1007/bf00503582
Publikováno v:
Review of Scientific Instruments. 47:1237-1250
An apparatus incorporating a magnetic suspension technique has been developed for density measurements on liquids and liquid mixtures, particularly at saturation, at temperatures between 90 and 300 K and at pressures to 5 MPa (approximately 50 atm).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e202b8e970800603138f2c1c13d18b5d
https://doi.org/10.1063/1.1134519
https://doi.org/10.1063/1.1134519
Autor:
N. V. Frederick, Dwain E. Diller
Publikováno v:
International Journal of Thermophysics. 10:145-157
A torsional piezoelectric crystal viscometer for compressed gases and liquids at temperatures to 600 K and a pressures to 70 MPa has been developed. Several torsional crystals were prepared from swept (electrolyzed) quartz to obtain a good performanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4516ca05d9b736ed73c9450edeef6b4
https://doi.org/10.1007/bf00500715
https://doi.org/10.1007/bf00500715
Publikováno v:
Journal of Applied Physics. 51:305-309
Variability of elastic constants in stainless‐steel 304 was determined by measuring longitudinal and transverse ultrasonic velocities in 20 samples acquired randomly. Three kinds of variations—sample to sample, directional within a sample, and re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b25ba6c5bfd86651afb0b4800d3b9503
https://doi.org/10.1063/1.327371
https://doi.org/10.1063/1.327371
Autor:
D. G. McDonald, N. V. Frederick
Publikováno v:
Applied Physics Letters. 47:530-532
A Josephson junction amplifier comprising an array of series connected Josephson junctions which are maintained in a finite voltage, mutually electromagnetically phase-locked state. An input signal is applied across a first group of one or more but l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52bf0168d4d26ada730f7cca89531d82
https://doi.org/10.1063/1.96116
https://doi.org/10.1063/1.96116
Autor:
N. V. Frederick, W. M. Haynes
Publikováno v:
The Review of scientific instruments. 50(9)
A differential capacitance sensor has been used in the servosystem of a magnetic suspension densimeter to detect the position of a magnetic buoy. This type of sensor has not previously been used in this application. Its design, performance, and advan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::406360d72ac53f4df3e00c7ffa93771e
https://pubmed.ncbi.nlm.nih.gov/18699690
https://pubmed.ncbi.nlm.nih.gov/18699690
Publikováno v:
IEEE Transactions on Geoscience Electronics. 12:102-103
Magnetotelluric field measurements were carried out at two geothermally interesting locations with two Superconducting QUantum Interference Device (SQUID) magnetometers. The tests demonstrated the very attractive combination of characteristics of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4edf7f98c0f2b4ff426b650ab883f26d
https://doi.org/10.1109/tge.1974.294346
https://doi.org/10.1109/tge.1974.294346
Autor:
W. W. Scott, N. V. Frederick
Publikováno v:
Review of Scientific Instruments. 40:1240-1241
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed9d88f39327493959681d932a6b261e
https://doi.org/10.1063/1.1684214
https://doi.org/10.1063/1.1684214
Apparatus for Density and Dielectric Constant Measurements to 35 MPa on Fluids of Cryogenic Interest
Autor:
W. M. Haynes, N. V. Frederick
Publikováno v:
J Res Natl Bur Stand (1977)
An apparatus has been developed for simultaneous measurements of fluid densities and dielectric constants at temperatures from 70 to 320 K and at pressures to 35 MPa. A magnetic suspension technique, based on an application of Archimedes’ principle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c952a7c43b3bcaab96ad5178727df503
https://doi.org/10.6028/jres.088.012
https://doi.org/10.6028/jres.088.012