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See detailL'Observatoire de Haute-Provence
Mathys, G.; Manfroid, Jean ULg

Article for general public (1984)

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See detailL'Observatoire de la Consommation Alimentaire en Région Wallonne : pourquoi, comment ?
Claustriaux, Jean-Jacques ULg; Cordier, L.; Duquesne, B. et al

Conference (2004, May 12)

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See detailL’Observatoire de la Consommation alimentaire en Région wallonne : pourquoi, comment ?
Claustriaux, Jean-Jacques ULg; Cordier, Ludwig; Duquesne, Brigitte ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2005), 9(3), 207-212

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See detailL'Observatoire de la consommation alimentaire
Claustriaux, Jean-Jacques ULg; Cordier, L.; Duquesne, Brigitte ULg et al

in Vers une politique de qualité, à quel prix ? (2003)

Description de l'utilisation d'une base de données relative aux achats de produits alimentaires effectués par des ménages.

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See detailL'Observatoire de la consommation alimentaire
Claustriaux, Jean-Jacques ULg; Cordier, L.; Duquesne, B. et al

in Vers une politique de qualité, à quel prix ? (2003, October 08)

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See detailL'Observatoire Liégeois des Drogues
Neuforge, S; Gosset, Christiane ULg; Maisse, L et al

Conference (2002)

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See detailObservatory of food consumption in Walloon Region (Belgium).
Bievelet, C.; Palm, Rodolphe ULg; Claustriaux, Jean-Jacques ULg

Scientific conference (2005)

This paper describes tasks entrusted to the Gembloux Agricultural University in the context of the Observatory of Food Consumption. At first, the document presents the establishment and the targets of ... [more ▼]

This paper describes tasks entrusted to the Gembloux Agricultural University in the context of the Observatory of Food Consumption. At first, the document presents the establishment and the targets of this organism. The database available, a consumption panel, is then described. Finally, some results, from studies carried out on the "structure of consumption", illustrate the use of the database. [less ▲]

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See detailAn Observatory on Academic Criminology Programs under the auspices of the ISC
Lauwaert, Katrien ULg

in Annales Internationales de Criminologie = International Annals of Criminology (2011)

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See detailObserved and simulated time evolution of HCl, ClONO2, and HF total column abundances
Kohlhepp, R; Ruhnke, R; Chipperfield, M P et al

in Atmospheric Chemistry and Physics (2012), 12(7), 3527--3556

Time series of total column abundances of hydrogen chloride (HCl), chlorine nitrate (ClONO2), and hydrogen fluoride (HF) were determined from ground-based Fourier transform infrared (FTIR) spectra ... [more ▼]

Time series of total column abundances of hydrogen chloride (HCl), chlorine nitrate (ClONO2), and hydrogen fluoride (HF) were determined from ground-based Fourier transform infrared (FTIR) spectra recorded at 17 sites belonging to the Network for the Detection of Atmospheric Composition Change (NDACC) and located between 80.05°N and 77.82°S. By providing such a near-global overview on ground-based measurements of the two major stratospheric chlorine reservoir species, HCl and ClONO2, the present study is able to confirm the decrease of the atmospheric inorganic chlorine abundance during the last few years. This decrease is expected following the 1987 Montreal Protocol and its amendments and adjustments, where restrictions and a subsequent phase-out of the prominent anthropogenic chlorine source gases (solvents, chlorofluorocarbons) were agreed upon to enable a stabilisation and recovery of the stratospheric ozone layer. The atmospheric fluorine content is expected to be influenced by the Montreal Protocol, too, because most of the banned anthropogenic gases also represent important fluorine sources. But many of the substitutes to the banned gases also contain fluorine so that the HF total column abundance is expected to have continued to increase during the last few years. The measurements are compared with calculations from five different models: the two-dimensional Bremen model, the two chemistry-transport models KASIMA and SLIMCAT, and the two chemistry-climate models EMAC and SOCOL. Thereby, the ability of the models to reproduce the absolute total column amounts, the seasonal cycles, and the temporal evolution found in the FTIR measurements is investigated and inter-compared. This is especially interesting because the models have different architectures. The overall agreement between the measurements and models for the total column abundances and the seasonal cycles is good. Linear trends of HCl, ClONO2, and HF are calculated from both measurement and model time series data, with a focus on the time range 2000–2009. This period is chosen because from most of the measurement sites taking part in this study, data are available during these years. The precision of the trends is estimated with the bootstrap resampling method. The sensitivity of the trend results with respect to the fitting function, the time of year chosen and time series length is investigated, as well as a bias due to the irregular sampling of the measurements. The measurements and model results investigated here agree qualitatively on a decrease of the chlorine species by around 1%yr-1. The models simulate an increase of HF of around 1%yr-1. This also agrees well with most of the measurements, but some of the FTIR series in the Northern Hemisphere show a stabilisation or even a decrease in the last few years. In general, for all three gases, the measured trends vary more strongly with latitude and hemisphere than the modelled trends. Relative to the FTIR measurements, the models tend to underestimate the decreasing chlorine trends and to overestimate the fluorine increase in the Northern Hemisphere. At most sites, the models simulate a stronger decrease of ClONO2 than of HCl. In the FTIR measurements, this difference between the trends of HCl and ClONO2 depends strongly on latitude, especially in the Northern Hemisphere. [less ▲]

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See detailObserved Periods of Ap and Bp stars (Catalano+ 1998)
Catalano, F. A.; Renson, Pierre ULg

in VizieR Online Data Catalog (1997), 3199

A catalogue of all the periods published up to 31 October 1996 on 364 CP stars is presented; it supersedes the previous version (catalog <III/152>). The paper version (catalog.tex) is arranged in three ... [more ▼]

A catalogue of all the periods published up to 31 October 1996 on 364 CP stars is presented; it supersedes the previous version (catalog <III/152>). The paper version (catalog.tex) is arranged in three tables: the bulk of the data, i.e. those referring to CP2, CP3, and CP4 stars, are given in Table 1, while the data concerning He-strong stars are given in Table 2 and those for eclipsing or ellipsoidal variables are collected in Table 3. Notes are also provided at the end of each table, mainly about duplicities. The machine-readable version was arranged in two main parts: the main parameters of the 364 stars (identifiers and names, positions, spectral types, magnitudes and peculiarities) are tabulated in the file 'stars'; periods and the of the observed variations (light, spectrum, magnetic field, etc.) are listed in the 'periods' file. Two other files contains the notes and the references. (3 data files). [less ▲]

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See detailThe observed periods of Ap and Bp stars
Catalano, F. A.; Renson, Pierre ULg

in Astronomy and Astrophysics. Supplement Series (1998), 127

A catalogue of all the periods up to now proposed for the variations of CP2, CP3, and CP4 stars is presented. The main identifiers (HD and HR), the proper name, the variable-star name, and the spectral ... [more ▼]

A catalogue of all the periods up to now proposed for the variations of CP2, CP3, and CP4 stars is presented. The main identifiers (HD and HR), the proper name, the variable-star name, and the spectral type and peculiarity are given for each star as far as the coordinates at 2000.0 and the visual magnitude. The nature of the observed variations (light, spectrum, magnetic field, etc.) is presented in a codified way. The catalogue is arranged in three tables: the bulk of the data, i.e. those referring to CP2, CP3, and CP4 stars, are given in Table 1, while the data concerning He-strong stars are given in Table 2 and those for eclipsing or ellipsoidal variables are collected in Table 3. Notes are also provided at the end of each table, mainly about duplicities. The catalogue contains data on 364 CP stars and is updated to 1996, October 31. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. [less ▲]

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See detailObserved Periods of Ap Stars (Catalano+ 1984)
Catalano, F. A.; Renson, Pierre ULg

in VizieR Online Data Catalog (1996), 3152

A table of all the periods proposed up to 1983 for Ap stars is given with references. The main identifiers (HD, HR, ... numbers), the variable-star name, and the spectral type are listed for each star in ... [more ▼]

A table of all the periods proposed up to 1983 for Ap stars is given with references. The main identifiers (HD, HR, ... numbers), the variable-star name, and the spectral type are listed for each star in the table. The nature of the periodic variability discovered (luminosity, equivalent widths of the lines, magnetic field, ...) is presented in a codified way. Notes are provided, mainly about duplicities. (2 data files). [less ▲]

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See detailObserved trends in total vertical column abundances of atmospheric gases from IR solar spectra recorded at the Jungfraujoch
Mahieu, Emmanuel ULg; Zander, Rodolphe ULg; Delbouille, Luc et al

in Journal of Atmospheric Chemistry (1997), 28(1-3), 227-243

Since 1984, about 15 000 high quality infrared solar spectra have been recorded with state-of-the-art grating and Fourier transform spectrometers at the International Scientific Station of the ... [more ▼]

Since 1984, about 15 000 high quality infrared solar spectra have been recorded with state-of-the-art grating and Fourier transform spectrometers at the International Scientific Station of the Jungfraujoch, Switzerland. Nonlinear least squares spectral curve fitting of selected microwindows containing isolated and well characterized lines of 20 telluric gases have allowed to retrieve their total vertical column abundances above the station, leading to observational data bases essential to derive long- and short-term changes experienced by these species during the last 12 years. In this paper, we focus on atmospheric gases of particular interest within the context of the EUROTRACTOR (Tropospheric Ozone Research) project; secular evolution as well as seasonal cycles of the minor constituents CH4, CO and of the trace gases C2H6, OCS, C2H2, HCN and H2CO are reported and discussed. The long-lived N2O is included as a tracer of the dynamic activity of the atmosphere. [less ▲]

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See detailObserver et comparer. Pour une étude critique de l'iconographie des vases italiotes.
Morard, Thomas ULg

Scientific conference (2011, November 10)

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See detailObserver et évaluer pour mieux enseigner
de Landsheere, Gilbert ULg; Crahay, Marcel ULg; Manni, Gentile ULg et al

in L'année internationale de l'enfance (1979)

Detailed reference viewed: 69 (3 ULg)
See detailObserver et évaluer pour mieux enseigner
Crahay, Marcel ULg; de Landsheere, Gilbert ULg; Thirion, Anne-Marie ULg

in Pédagogie et Recherche (1980)

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See detailObserver et réguler les comportements d'animateurs en milieu LOGO
Denis, Brigitte ULg

Conference (1985, May)

Detailed reference viewed: 10 (1 ULg)