References of "1979"
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See detailTwintig jaar Duitse neerlandistiek: een poging tot inventarisatie
Vromans, Joseph ULg

Conference given outside the academic context (1979)

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See detailUBV photometry of the asteroids 9 Metis, 87 Sylvia and 247 Eukrate during their oppositions in 1978 with respect to lightcurves
Schober, H. J.; Surdej, Jean ULg

in Astronomy and Astrophysics. Supplement Series (1979), 38

Abstract image available at: http://esoads.eso.org/abs/1979A&AS...38..269S

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See detailProperties of mixed monolayers of lecithin and spin probe. II Analysis of the molecular organization
Chatelain, P.; Brasseur, Robert ULg; Ruysschaert, J. M. et al

in Journal of Colloid & Interface Science (1979), 72(2), 294-303

This paper seeks to investigate the molecular organization of fatty acid spin label (4-palmitamido-2,2,6,6-tetramethylpiperidine-1-oxyl) and dipalmitoylphosphatidylcholine molecules in monolayer vesicles ... [more ▼]

This paper seeks to investigate the molecular organization of fatty acid spin label (4-palmitamido-2,2,6,6-tetramethylpiperidine-1-oxyl) and dipalmitoylphosphatidylcholine molecules in monolayer vesicles. The molar ratio of the spin probe was varied from 1 to 22% and the corresponding electron spin resonance spectra were measured at 25 and 48°C. These spectra were analysed in terms of the dipole-dipole and exchange interactions occuring between the radicals. From a computer simulation, a quantitative analysis of these interactions could be made. Comparison of these data with theoretical models indicate that above the lipid phase transition, i.e., at 48°C, the membrane is homogeneous and the label molecules diffuse randomly in the lecithin bulk phase (D = 3.8 X 10-8 cm2/sec). At 25°C, the membrane model can be viewed as a mosaic structure composed of spin probe clusters (7.9 X 1011 clusters/cm2). The size of the clusters as well as the minimal mean distance between two cluster edges could be calculated as a function of the spin label molar ratio. These results are used to interpret the observations made in the first paper of this series [Chatelain et ak., J. Colloid Interface Sci. 72, 287 (1979)] concerning the surface viscosity of the mixed monolayer and the kinetics of the enzymatic activity of phospholipase A2. It can be concluded that above a critical spin label concentration (10-15%) the properties of the entire lecithin phase are influenced by the presence of the spin probe clusters. [less ▲]

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See detailMonitoring enzymatique par courbes étalonnées de percentiles chez l'opéré cardiaque
Brunain, J. P.; Chapelle, Jean-Paul ULg; Albert, Adelin ULg et al

Poster (1979, October 06)

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See detailInternational Directory of Amateur Astronomical Societies - IDAAS 1979
Heck, Andre; Manfroid, Jean ULg

in International Directory of Amateur Astronomical Societies - IDAAS 1979 (1979), ii + 288pp. (1979)

Not Available

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See detailNucleon-Nucleus Potential at Low and Intermediate Energy in a Dirac-Hartree Model
Jaminon, Martine ULg; Mahaux, Claude ULg; Rochus, Pierre ULg

in Physical Review Letters (1979), 43

We calculate the average nucleon-nucleus potential from the Dirac-Hartree model, extended to positive energy. The sole input is a one-boson-exchange nucleon-nucleon interaction which reproduces ground ... [more ▼]

We calculate the average nucleon-nucleus potential from the Dirac-Hartree model, extended to positive energy. The sole input is a one-boson-exchange nucleon-nucleon interaction which reproduces ground-state properties. We obtain fair agreement with empirical values. Between 170 and 400 MeV, the calculated potential is repulsive in the nuclear interior but still attractive at the surface. This shape is related to the scalar and vector nature of the exchanged bosons. [less ▲]

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See detailBlurring in Tomograms Made with X-ray Beams of Finite Width
Verly, Jacques ULg; Bracewell, Ronald N.

in Journal of Computer Assisted Tomography (1979), 3

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See detailCAJUN , ZYDECO EN CLIFTON CHENIER
Sacré, Robert ULg

in Muziekkrant (1979), (NUMMER 4), 10-15

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See detailL'Université face à des situations contradictoires?
Betz, Emile-Hippolyte ULg

Speech (1979)

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See detailThe morphology of equatorial Mg/plus/ ion distribution deduced from 2800-A airglow observations
Gérard, Jean-Claude ULg; Rusch, D. W.; Hays, P. B. et al

in Journal of Geophysical Research (1979), 84

The Visible Airglow Experiment on the Atmosphere Explorer E satellite has observed the resonantly scattered emission from Mg II at 2800 A in the equatorial ionosphere. Altitude profiles of the Mg(plus ... [more ▼]

The Visible Airglow Experiment on the Atmosphere Explorer E satellite has observed the resonantly scattered emission from Mg II at 2800 A in the equatorial ionosphere. Altitude profiles of the Mg(plus) ion distribution have been obtained from the inversion of the surface brightness measurements made on spinning orbits. These data show a daytime metallic ion layer between 150 and 200 km developing in the early morning and reaching about 100 ions/cu cm in the afternoon. Mg(plus) ions are also seen in the F 2 region mostly in the late afternoon hours within a few degrees of the dip equator. The study of the vertical column density measured in the despun mode indicates that the amount of Mg(plus) in the F region is most variable in the afternoon hours at low dip latitudes. These results can be explained in part by the diurnal variation of the E x B drift velocity which lifts the metallic ions up into the F region. The observations suggest that the vertical polarization electric field is not the primary transport mechanism extracting the Mg(plus) ions from the low-altitude source layer. [less ▲]

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See detailPhotoelectric lightcurves and rotation period of the minor planet 148 Gallia
Surdej, Anna ULg; Surdej, Jean ULg

in Astronomy and Astrophysics. Supplement Series (1979), 37

Abstract image available at: http://esoads.eso.org/abs/1979A&AS...37..471S

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See detailPhotoelectric observations of two unusual asteroids - 1978 CA and 1978 DA
Schuster, H. E.; Surdej, Anna ULg; Surdej, Jean ULg

in Astronomy and Astrophysics. Supplement Series (1979), 37

The two fast-moving asteroids 1978 CA and 1978 DA, discovered in February 1978 with the ESO Schmidt telescope at La Silla (Chile), were observed with a photoelectric photometer attached to the 1-m ESO ... [more ▼]

The two fast-moving asteroids 1978 CA and 1978 DA, discovered in February 1978 with the ESO Schmidt telescope at La Silla (Chile), were observed with a photoelectric photometer attached to the 1-m ESO telescope. The light curve of 1978 CA displays two fairly symmetric maxima and minima with a total amplitude of 0.8 mag in V. The synodic period of rotation found is 3 h 45 m and places 1978 CA as the third fastest rotator among all known solar objects. Concerning the minor planet 1978 DA, light variations covering one full cycle of rotation could not be monitored. Nevertheless, the rotation period exceeds 5 h, and the total amplitude is greater than 0.35 mag. [less ▲]

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See detailL'impuissance érective: Aspects psychologiques
Mormont, Christian ULg

in Revue Médicale de Liège (1979), 34(17), 712-714

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See detailThe auroral ionosphere - Comparison of a time-dependent model with composition measurements
Gérard, Jean-Claude ULg; Rusch, D. W.

in Journal of Geophysical Research (1979), 84

A time-dependent model of the auroral ionosphere including the odd nitrogen species, NO, N(D-2), and N(S-4), is used for comparison with data from a coordinated rocket-satellite measurement of an auroral ... [more ▼]

A time-dependent model of the auroral ionosphere including the odd nitrogen species, NO, N(D-2), and N(S-4), is used for comparison with data from a coordinated rocket-satellite measurement of an auroral event. The chemical scheme and the adopted rate coefficients have been shown to be compatible with daytime mid-latitude ionospheric chemistry. The electron flux and neutral atmospheric parameters measured on the satellite are used to compute the appropriate ionization and dissociation rates. The calculated NO(plus), O2(plus), O(plus), Ne, and NO densities agree well with the rocket measurements. The calculated N2(plus) densities are larger than the measured densities by a factor of 3 at most altitudes. The calculations show that the nitric oxide content of the aurora (about 1.2 times 10 to the 9th NO molecules/cu cm at 105 km) is below the saturation value. [less ▲]

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See detailNew Research for Periods of Ap Stars Observed at the ESO - III
Renson, Pierre ULg; Manfroid, Jean ULg

in Information Bulletin on Variable Stars (1979), 1658

Not Available

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See detailPériodicités probables des étoiles Ap xi Phe et HD 30849
Renson, Pierre ULg

in Astronomy and Astrophysics (1979), 77

A few photometric observations made by Vogt and Faundez (1979) for xi Phe and HD 30849 allow to deduce that the variations are probably periodic. The most probable periods are given. These variations are ... [more ▼]

A few photometric observations made by Vogt and Faundez (1979) for xi Phe and HD 30849 allow to deduce that the variations are probably periodic. The most probable periods are given. These variations are large for Ap stars, chiefly in HD 30849, and mainly in v. [less ▲]

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See detailAttempt to isolate infectious agent from bone-marrow of patients with multiple sclerosis
Wallen, William C.; Sever, John L.; McFarlin, Dale E. et al

in Lancet (1979), 314(8139), 414-415

An infectious ætiology for multiple sclerosis (MS) has been postulated but none of the agents putatively associated with the disease have, as yet, been proven to be causative.1-4 The reported5 isolation ... [more ▼]

An infectious ætiology for multiple sclerosis (MS) has been postulated but none of the agents putatively associated with the disease have, as yet, been proven to be causative.1-4 The reported5 isolation of an infectious agent from bone-marrow aspiration of patients with MS prompted us to attempt recovery of an agent from our MS patients. We were unable to isolate an agent from seven MS patients with similar cell lines and procedures. There is no apparent reason for our inability to do so. However, we did find an adventitious agent(s) in two commercial sources of Hela cells. Although not initially apparent, this agent(s) became active upon incubation with either MS-patient or control bone-marrow cells and induced large syncytia when passed to other Hela cells. [less ▲]

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See detailImage Reconstruction from Strip Integrals in Computer-aided X-ray Tomography
Verly, Jacques ULg; Bracewell, Ronald N.

Conference (1979, August)

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See detailTransmission line conductor surface voltage gradients. Comparison between Mangoldt's and charge simulation methods.
Lilien, Jean-Louis ULg; Pirotte, pol

in Proceedings of the Third ISH (1979, August)

Simulation of electric field around large bundle by charge simulation method.

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