Výsledky vyhledávání - "J. C. McCoubrey"

Relative efficiencies of H20 and D20 as catalysts for transfer of vibrational energy

Autor: J. C. McCoubrey, R. C. Milward, Alfred Rene Jean Paul Ubbelohde

Publikováno v: Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences. 269:456-468

Complex theories of transfer from translational to internal energy in gaseous collisions can be tested in an accurate and fairly simple way, by comparing catalytic efficiencies of transfer by the isotopic molecules H2O and D2O. Results are given for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::187041ecfa80fbfd6bb672786e066c9f
https://doi.org/10.1098/rspa.1962.0189

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Studies on the transfer of vibrational energy in hydrocarbons

Autor: Alfred Rene Jean Paul Ubbelohde, J. C. McCoubrey, J. B. Parke

Publikováno v: Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences. 223:155-166

The dispersion of sound in pure ethylene has been reinvestigated at the frequencies 151 and 303 kc/s, at pressures ranging from 20 to 76 cm Hg and at temperatures from —3.4 to 25° C. On the basis that this dispersion is due to hindrances in the tr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e039df9b551f97f3acf778b792a9128
https://doi.org/10.1098/rspa.1954.0106

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Energy transfer in polyatomic molecules. II. Relative catalytic efficiency for energy transfer to different vibrations to the same molecule

Autor: Alfred Rene Jean Paul Ubbelohde, J. C. McCoubrey, R. C. Milward

Publikováno v: Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences. 264:299-308

Vibrations of sulphur dioxide show two separate relaxation times. Values of r 1 = 6.0 × 10 -8 s for the vibrations of 519 cm -1 and r 2 = 1.2 × 10 -6 s for the vibrations of 1151 and 1361 cm -1 have been derived from new ultrasonic measurements, in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f75ac3820a88f567ea9d6bb1f74a124a
https://doi.org/10.1098/rspa.1961.0201

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Studies of catalysis in fluoride solutions

Autor: J. C. McCoubrey, Ronald Percy Bell

Publikováno v: Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences. 234:192-207

Measurements are reported of the catalytic effect of aqueous hydrogen fluoride and fluoride buffer solutions in the following eight reactions: the hydrolysis of diethyl acetal, the depolymerization of paraldehyde, the decomposition of nitramide, th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9ec408683d4ddd7286404e351d9cd4b1
https://doi.org/10.1098/rspa.1956.0026

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Efficiencies of additives in the transfer of vibrational energy in ethylene and nitrous oxide

Autor: Alfred Rene Jean Paul Ubbelohde, J. C. McCoubrey, J. W. Arnold

Publikováno v: Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences. 248:445-459

Using ethylene or nitrous oxide as test molecules which contain different atoms and exhibit different internal modes of motion, measurements of the dispersion of ultrasonic velocities have been used to obtain information about vibrational energy tran

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84a96b6553bc6078f55ad042dcba75b2
https://doi.org/10.1098/rspa.1958.0255

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Energy transfer in polyatomic molecules: I. Catalysis of energy transfer with isotopic molecules

Autor: Alfred Rene Jean Paul Ubbelohde, G. H. : Hudson, J. C. McCoubrey

Publikováno v: Proceedings-Royal Society. Mathematical, physical and engineering sciences, 264 (1318

Dispersion of sound has been com pared for ethylene and tetradeutero-ethylene. Relaxation times of 0.26 and 0.14 u s for these molecules follow the general trend with molecular frequencies predicted by theory. A quantitative account of th e observed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5536c76d9b315ab35a49bb914ebd94f8
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/277530

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