The Experts below are selected from a list of 222 Experts worldwide ranked by ideXlab platform
Andrea Capelli - One of the best experts on this subject based on the ideXlab platform.
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original pycnometers for volatile liquid density over wide ranges of temperature and pressure practical example
Metrologia, 2014Co-Authors: Salvatore Lorefice, Raffaella Romeo, Marco Santiano, Andrea CapelliAbstract:A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7 mol% in the temperature range from 233 K to 313 K at pressure lower than 10 MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16 kg m−3 (0.02%) in the temperature range from 253 K to 313 K and lower than 0.07% between 233 K and 243 K over the whole pressure range tested.
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original pycnometers for volatile liquid density over wide ranges of temperature and pressure practical example
Metrologia, 2014Co-Authors: Salvatore Lorefice, Raffaella Romeo, Marco Santiano, Andrea CapelliAbstract:A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7 mol% in the temperature range from 233 K to 313 K at pressure lower than 10 MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16 kg m−3 (0.02%) in the temperature range from 253 K to 313 K and lower than 0.07% between 233 K and 243 K over the whole pressure range tested.
Salvatore Lorefice - One of the best experts on this subject based on the ideXlab platform.
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original pycnometers for volatile liquid density over wide ranges of temperature and pressure practical example
Metrologia, 2014Co-Authors: Salvatore Lorefice, Raffaella Romeo, Marco Santiano, Andrea CapelliAbstract:A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7 mol% in the temperature range from 233 K to 313 K at pressure lower than 10 MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16 kg m−3 (0.02%) in the temperature range from 253 K to 313 K and lower than 0.07% between 233 K and 243 K over the whole pressure range tested.
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original pycnometers for volatile liquid density over wide ranges of temperature and pressure practical example
Metrologia, 2014Co-Authors: Salvatore Lorefice, Raffaella Romeo, Marco Santiano, Andrea CapelliAbstract:A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7 mol% in the temperature range from 233 K to 313 K at pressure lower than 10 MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16 kg m−3 (0.02%) in the temperature range from 253 K to 313 K and lower than 0.07% between 233 K and 243 K over the whole pressure range tested.
Van Meh Rini Dongen - One of the best experts on this subject based on the ideXlab platform.
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Multi-component droplet growth. I. Experiments with supersaturated n-nonane vapor and water vapor in methane
Physics of Fluids, 2004Co-Authors: P Paul Peeters, G Gerben Pieterse, J Jan Hruby, Van Meh Rini DongenAbstract:Droplet growth rates of droplets suspended in methane gas and supersaturated water and/or n-nonane vapor are experimentally determined. The experiments are performed by applying the nucleation pulse principle using a modified shock tube. The droplets are optically detected using a combination of constant angle Mie scattering and light extinction measurements. From the analysis of the droplet growth rates in the binary systems the diffusion coefficients of water in methane and n-nonane in methane have been determined at two different conditions, being 11 bar and 242 K, and 44 bar and 247 K. The droplet growth rates in the ternary system have been determined at the same two conditions. From the analysis of these experiments it is evident that supersaturated water vapor does not condense onto n-nonane droplets while supersaturated n-nonane vapor does condense onto water droplets. This can be related to the wetting properties of liquid water on liquid n-nonane and vice versa.
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Binary nucleation rate measurements of n-nonane/methane at high pressures
The Journal of Chemical Physics, 1995Co-Authors: Knh Karel Looijmans, Ccm Carlo Luijten, Van Meh Rini DongenAbstract:We present homogeneous nucleation rates in the binary mixture n‐nonane/methane in the supercritical regime, measured in a new pulse expansion tube at pressures up to 40 bar, at a temperature of 240 K. It is shown that both n‐nonane and methane are present in the critical cluster. The critical supersaturation of n‐nonane decreases from 30 at 10 bar, down to 6 at 40 bar total pressure.
Frank Z. Stanczyk - One of the best experts on this subject based on the ideXlab platform.
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Nomenclature of the Gonane progestins.
Contraception, 1999Co-Authors: Richard A. Edgren, Frank Z. StanczykAbstract:The use of Gonane nomenclature can be traced back to the early 1960s when the first compound submitted for trial the carbon-18 homologue of the anabolic agent Nilevar was named bisnortestosterone. However the confusion about how this compound was named led scientists to introduce the Gonane system for naming bisnortestosterones and structurally related compounds. Use of the terms Gonane and estrane to classify the levonorgestrel and norethindrone families of progestins respectively originates from the systemic name of these compounds. Levonorgestrel is 17beta-hydroxy-17alpha-ethinyl-13beta-ethyl-4-gonen-3-one while norethindrone is 17beta-hydroxy-17alpha-ethinyl-4-estren-3-one. The term Gonane signifies that levonorgestrel and the related progestins are a separate class of steroids that differ from other steroids. Levonorgestrel and the related progestins form a structural category of 18-homologated 19-nortestosterones. Thus it would be better to categorize levonorgestrel and the structurally related progestins such as desogestrel norgestimate gestodene as carbon-18-homologated 19-nortestosterones. Alternatively it is simpler to refer to these compounds as the levonorgestrel family of progestins. In a similar manner norethindrone and the related progestins can be referred to as the norethindrone (norethisterone) family of progestins.
Raffaella Romeo - One of the best experts on this subject based on the ideXlab platform.
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original pycnometers for volatile liquid density over wide ranges of temperature and pressure practical example
Metrologia, 2014Co-Authors: Salvatore Lorefice, Raffaella Romeo, Marco Santiano, Andrea CapelliAbstract:A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7 mol% in the temperature range from 233 K to 313 K at pressure lower than 10 MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16 kg m−3 (0.02%) in the temperature range from 253 K to 313 K and lower than 0.07% between 233 K and 243 K over the whole pressure range tested.
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original pycnometers for volatile liquid density over wide ranges of temperature and pressure practical example
Metrologia, 2014Co-Authors: Salvatore Lorefice, Raffaella Romeo, Marco Santiano, Andrea CapelliAbstract:A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7 mol% in the temperature range from 233 K to 313 K at pressure lower than 10 MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16 kg m−3 (0.02%) in the temperature range from 253 K to 313 K and lower than 0.07% between 233 K and 243 K over the whole pressure range tested.