References of "1952"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailAnalyse et purification de l'actinomycetine par absorption
Ghuysen, Jean-Marie ULiege; Welsch, Maurice

in Comptes Rendus des Séances de la Société de Biologie et de ses Filiales (1952), 146(21-22), 1812-1815

Detailed reference viewed: 16 (8 ULiège)
See detailL'activité staphylolytique de l'actinomycétine
Ghuysen, Jean-Marie ULiege

in Comptes Rendus des Séances de la Société de Biologie et de ses Filiales (1952), 146(15-16), 1268-1271

Detailed reference viewed: 9 (1 ULiège)
Full Text
See detailAstrophysics: 1951
Swings, Polydore ULiege

in Leaflet - Astronomical Society of the Pacific (1952), 6(273), 178-188

Detailed reference viewed: 15 (1 ULiège)
Full Text
See detailThe Spectra of Comets 1950b (Minkowski) and 1951a (Pajdusakova).
Swings, Polydore ULiege; Page, Thornton

in Astrophysical Journal (1952), 115

The spectrum of Comet 1950b at heliocentric distance 2.65 A.U. shows a strong solar continuum concentrated in the nucleus and CN emission over a coma forty times larger. Comet 1951a at heliocentric ... [more ▼]

The spectrum of Comet 1950b at heliocentric distance 2.65 A.U. shows a strong solar continuum concentrated in the nucleus and CN emission over a coma forty times larger. Comet 1951a at heliocentric distance 0.91 A.U. is very unusual in showing a strong nuclear continuum and extremely weak CN emission over a coma only eight times larger than the nucleus. The former seems normal for a comet distance from the sun; the latter is probably a "fresh" comet, newly arrived near the sun from the swarm of cometary material postulated by Oort at the outer confines of the solar system. [less ▲]

Detailed reference viewed: 45 (0 ULiège)
Full Text
See detailHydrates de gaz dans les noyaux cométaires et les grains interstellaires
Delsemme, A.-H.; Swings, Polydore ULiege

in Annales d'astrophysique (1952), 15(1), 1-6

Solid hydrates of CH4, CO2, ... may be present in cometary nuclei and interstellar grains. The vapor pressures — hence the rates of sublimation — of the various hydrates are of the same order of magnitude ... [more ▼]

Solid hydrates of CH4, CO2, ... may be present in cometary nuclei and interstellar grains. The vapor pressures — hence the rates of sublimation — of the various hydrates are of the same order of magnitude while the vapor pressures of solid CH4, H2O, ... differ by very large factors. The relative abundances of the radicals which are observed in comets would be explained more satisfactorily by assuming the presence of solid hydrates. [less ▲]

Detailed reference viewed: 23 (3 ULiège)
Full Text
See detailSuggestions for new photoelectric observations of the zodiacal light and the counterglow
Swings, Polydore ULiege

in L'étude optique de l'atmosphère terrestre : communications présentées au colloque international tenu à l'Institut d'Astrophysique de l'Université de Liège, les 3 et 4 septembre 1951 (1952)

Detailed reference viewed: 15 (2 ULiège)
Full Text
See detailLes spectres de treize nébuleuses planétaires et de leurs noyaux
Swings, Polydore ULiege; Swensson, J.-W.

in Annales d'astrophysique (1952), 15

New observational data on the spectra of thirteen planetary nebulae and their nuclei are given. New nuclei of the WOLF-RAYET type containing both nitrogen and carbon have been found. Previously adopted ... [more ▼]

New observational data on the spectra of thirteen planetary nebulae and their nuclei are given. New nuclei of the WOLF-RAYET type containing both nitrogen and carbon have been found. Previously adopted WOLF-RAYET designations have been modified. Nuclei of planetary nebulae, despite their occasional resemblance to WOLF-RAYET stars, should not be associated with the latter. [less ▲]

Detailed reference viewed: 10 (1 ULiège)
Full Text
See detailThe spectrum of Nova DQ Herculis (1934) in 1950.
Swings, Polydore ULiege; Jose, P.-D.

in Astrophysical Journal (1952), 116

Seven spectrograms of Nova DQ Herculis obtained in May and October, 1950, reveal that the striking changes in the spectrum of the nebulosity observed between 1942 and 1949 continue, while the mean ... [more ▼]

Seven spectrograms of Nova DQ Herculis obtained in May and October, 1950, reveal that the striking changes in the spectrum of the nebulosity observed between 1942 and 1949 continue, while the mean velocity of expansion remains practically the same as in previous years. [less ▲]

Detailed reference viewed: 20 (1 ULiège)
Full Text
See detailIntroduction
Swings, Polydore ULiege

in L'étude optique de l'atmosphère terrestre : Communications présentées au colloque international tenu à l'Institut d'Astrophysique de l'Unversité de Liège les 3 et 4 septembre 1951 (1952)

Detailed reference viewed: 11 (0 ULiège)
Full Text
See detailRadiations cométaires inexpliquées
Swings, Polydore ULiege

in La physique des comètes : communications présentées au quatrième colloque international d’astrophysique (1952)

Detailed reference viewed: 20 (2 ULiège)
Full Text
See detailLa voie étoilée
Campus, Ferdinand ULiege

Speech/Talk (1952)

Detailed reference viewed: 21 (6 ULiège)
Full Text
Peer Reviewed
See detailVIII. Analyse chimique et électrotitrimétrique de l'acide ribonucléique de la levure
Ghuysen, Jean-Marie ULiege; Desreux, V

in Bulletin des Sociétés Chimiques Belges (1952), 61

The fractions of different molecular weights of yeast ribonucleic acid have been analyzed by chromatography and by the electrotitration curves. The results obtained by these two methods are practically ... [more ▼]

The fractions of different molecular weights of yeast ribonucleic acid have been analyzed by chromatography and by the electrotitration curves. The results obtained by these two methods are practically the same if we assume that there is 0.65 secondary phosphoric acid group per four purine and pyrimidine bases. The chemical composition of all the fractions obtained by fractional-extraction, is practically the same, so that there must be a statistical distribution of the bases in the high molecular weight ribonucleic acid. The depolymerisatin to very low molecular weight degradation products docs not seem to liberate free secondary phosphoric acid groups. Il appears that in a "native" yeast ribonucleic acid, the molecular proportions of the four bases are nearly identical. [less ▲]

Detailed reference viewed: 7 (0 ULiège)