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See detailIntercellular communications in lymph follicles
Heinen, Ernst ULg; Tsunoda, R.; Marcoty, C. et al

in Dendritic cells in lymphoid tissues (1991)

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See detailIntercellular Contacts between Germinal Center Cells. Mechanisms of Adhesion between Lymphoid Cells and Follicular Dendritic Cells
Louis, Edouard ULg; Philippet, B.; Cardos, B. et al

in Acta Oto-Rhino-Laryngologica Belgica (1989), 43(4), 297-320

Intercellular connections exist between germinal center cells especially between lymphoid cells and follicular dendritic cells (FDC). Even after isolation, FDC remain associated to lymphocytes and are ... [more ▼]

Intercellular connections exist between germinal center cells especially between lymphoid cells and follicular dendritic cells (FDC). Even after isolation, FDC remain associated to lymphocytes and are able, in a cell suspension, to establish new connections with others. Using human tonsillar cells or mouse lymph node cells we analysed these connections which were shown to be species-specific. Low temperature as well as absence of Ca++ and Mg++ in the culture medium reduced the adherence of fluorochrome-labeled lymphoid cells to FDC. Colchicine treatment did not impair the adherence, whereas cytochalasin B dit it; this was the first observation underlining the importance of microfibrils in FDC. Antibodies directed towards integrin molecules (LFA-1 alpha or beta chain, CD11a and CD18 respectively) reduced the adherence, others (anti-CR3 or anti-gp 150/95, CD11b and c respectively) did not influence it. Antibodies directed against MHC class II exerted no inhibitory action on the lymphoid cell adhesion to FDC. As, at ultrastructural level, gold-labeled immune complexes can be found between FDC and lymphoid cells, we examined the effect on cell adhesion of the addition of immune complexes to the cell suspensions. It only impaired the lymphoid cell adhesion when complement components were present. IgM complexes were then more inhibitory than IgG complexes. When antibodies against Fc IgG receptors (CD16) were added, the adhesion was strongly reduced whereas antibodies to Fc IgE (CD23) receptors had no influence. The antibody DRC1, specifically recognizing an antigen on human FDC reduced the attachment of cells to FDC. This antigen thus seems to play a role in the intercellular contacts; this is the first function ascribed to this FDC specific antigen. [less ▲]

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See detailThe Intercellular Transfer of Endothelial-­‐Circulating-­‐MiR-­‐503 Inhibits Tumor Growth
Bovy, Nicolas; Frères, Pierre; Carnet, Oriane et al

Conference (2013, January 28)

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See detailL'interception des pluies par différents types de couverts forestiers.
Petit, François ULg; Kalombo, K.

in Bulletin de la Société Géographique de Liège (1984)

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See detailThe interchromatin granules.
Thiry, Marc ULg

in Histology and Histopathology (1995), 10(4), 1035-45

In the present review, we report on the data obtained on the most prominent elements observed in the interchromatin spaces: the interchromatin granules (IGs). Special emphasis is placed on the recent ... [more ▼]

In the present review, we report on the data obtained on the most prominent elements observed in the interchromatin spaces: the interchromatin granules (IGs). Special emphasis is placed on the recent contributions of immunocytochemical and in situ hybridization methods towards elucidating the composition and the behavior of these nuclear substructures during the cell cycle. The possible roles of IGs in the cell nucleus are also discussed. [less ▲]

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See detailL'intercommunale, entité hybride aux frontières du droit public et du droit privé
Durviaux, Ann-Lawrence ULg

Conference (2010, September 17)

Exposé du régime juridique des intercommunales en Région wallonne

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See detailIntercomparison of in-situ NDIR and column FTIR measurements of CO2 at Jungfraujoch
Schibig, M. F.; Mahieu, Emmanuel ULg; Henne, S. et al

in Atmospheric Chemistry and Physics (in press)

We compare two CO2 time series measured at the High Alpine Research Station Jungfraujoch (3580 m a.s.l., Switzerland) in the period from 2005 to 2013 with an in-situ surface measurement system using a ... [more ▼]

We compare two CO2 time series measured at the High Alpine Research Station Jungfraujoch (3580 m a.s.l., Switzerland) in the period from 2005 to 2013 with an in-situ surface measurement system using a nondispersive infrared analyzer (NDIR) and a ground-based remote sensing system using solar absorption Fourier Transform Infrared spectrometry (FTIR). Although the two data sets show an absolute shift of about 13 ppm, the slopes of the annual CO2 increase are in good agreement within their uncertainties. They are 2.04 ± 0.07 19 ppm yr-1 and 1.97 ± 0.05 ppm yr-1 for the FTIR and the NDIR system, respectively. The seasonality of the FTIR and the NDIR system is 4.46 ± 1.11 ppm and 10.10 ± 0.73 ppm, respectively. The difference is caused by a dampening of the CO2 signal with increasing altitude due to mixing processes. While the minima of both data series occur in the middle of August, the maxima of the two datasets differ by about ten weeks, the maximum of the FTIR measurements is in middle of January, whereas the maximum of the NDIR measurements is found at the end of March. Sensitivity analyses revealed that the air masses measured by the NDIR system at the surface of Jungfraujoch are mainly influenced by central Europe, whereas the air masses measured by the FTIR system in the column above Jungfraujoch are influenced by regions as far west as the Caribbean and the United States. [less ▲]

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See detailIntercomparison of lead 210 and radiocarbon bomb pulse age models. A key study in a peat bog core from North Poland
Piotrowska, Natalia; De Vleeschouwer, François; Sikorski, Jaroslaw et al

Poster (2008)

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See detailIntercomparison of measurements of stratospheric hydrogen fluoride
Mankin, Williamg; Coffey, M. T.; Chance, K. V. et al

in Journal of Atmospheric Chemistry (1990), 10(2), 219-236

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See detailIntercomparison of NO Column Measurements During MAP/GLOBUS 1985
McKenzie, R.L.; Matthews, W.A.; Kondo, Y. et al

in Journal of Atmospheric Chemistry (1988), 7

Column measurements of nitric oxide were made using several techniques during the MAP/GLOBUS campaign in France in September 1985. The data sets are nearly co-located and simultaneous, therefore allowing ... [more ▼]

Column measurements of nitric oxide were made using several techniques during the MAP/GLOBUS campaign in France in September 1985. The data sets are nearly co-located and simultaneous, therefore allowing a valid intercomparison of the various measurement methods. The range of altitudes sampled differs from instrument to instrument. This complicates the comparison because the data sets are to some extent complementary. The NO distributions apparently vary significantly from day to day, and possibly over shorter timescales. Changes in dynamics may be responsible for these variations. The results from the instruments which measure in the infrared and the ultraviolet are self-consistent, and show good agreement with photochemical predictions. On 19 September, when the intercomparison was made, the profile measured by the in-situ chemi- luminescent instrument differed significantly from the predicted profile, and the measured columns were generally higher. [less ▲]

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See detailIntercomparison of radiocarbon bomb pulse and 210Pb age models. A study in a peat bog core from North Poland
Piotrowska, Natalia; De Vleeschouwer, François; Sikorski, Jaroslaw et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2010), Volume 268(7-8, April), 1163-1166

Radiocarbon and 210Pb were measured on the uppermost 40 cm of a Wardenaar peat core retrieved from a Baltic raised bog at Slowinskie Blota (Pomerania, North Poland). This site is the subject of ongoing ... [more ▼]

Radiocarbon and 210Pb were measured on the uppermost 40 cm of a Wardenaar peat core retrieved from a Baltic raised bog at Slowinskie Blota (Pomerania, North Poland). This site is the subject of ongoing multiproxy studies covering the last 1300 years. Radiocarbon age model was constructed on the basis of 14 AMS dates obtained on selected Sphagnum spp. fragments, with use of P_Sequence tool. We present here a comparison of this model with the age model obtained using CRS model classically applied to 210Pb measurements. [less ▲]

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See detailIntercomparison of stratospheric NO2 and NO3 measurements during MAP/GLOBUS 1983
Pommereau, J. P.; Fabian, P.; Flentje, G. et al

in Planetary and Space Science (1987), 35(5), 615-629

Nitrogen dioxide and trioxide have been observed from balloons, plane and from the ground during MAP/GLOBUS 1983. Comparison between NO2 mixing ratios measured from balloons shows some agreement between ... [more ▼]

Nitrogen dioxide and trioxide have been observed from balloons, plane and from the ground during MAP/GLOBUS 1983. Comparison between NO2 mixing ratios measured from balloons shows some agreement between remote sensing techniques on the one hand and in situ methods on the other. The two sets of data which agree in the lower stratosphere at 20 km diverge at higher altitudes by a factor of 2 around 27 km and 4 around 33 km. The NO2 column densities observed at sunset from the ground are in agreement with plane and balloon determinations, provided that the average mixing ratio below 16 km was indeed lower than 1.5 × 10−10. The diurnal variation of the NO2 column as determined from ground observations during the second half of September differs from the one seen in the stratosphere. A first comparison between NO3 night-time remote measurement and preliminary in situ results show a disagreement by a factor of 2. [less ▲]

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See detailIntercomparison of stratospheric water vapor profiles obtained during the Balloon Intercomparison Campaign
Murcray, D.; Goldman, A.; Kosters, J. et al

in Journal of Atmospheric Chemistry (1990), 10(2), 159-179

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See detailAn intercomparison study of luminescence dating protocols and techniques applied to medieval brick samples from Normandy (France)
Blain, Sophie ULg; Bailiff, Ian; Guibert, Pierre et al

in Quaternary Geochronology (2010), 5(2-3), 311-316

A luminescence dating study has been applied to inform the history and archaeology of two early medieval buildings in north western France. Five bricks were sampled from the medieval churches (10th–11th ... [more ▼]

A luminescence dating study has been applied to inform the history and archaeology of two early medieval buildings in north western France. Five bricks were sampled from the medieval churches (10th–11th centuries A.D.) of Rugles and Condé-sur-Risle in Normandy. The samples were divided and tested in the luminescence laboratories of the University of Durham (UK) and of Iramat-CRP2A, University of Bordeaux 3 (France). The fine grain and quartz inclusion techniques were applied, and tests included an examination of the anomalous fading of the luminescence signal from fine grain samples and coarse grains of feldspar. With one exception, the dates produced using the fine grain technique, although corrected for fading, were significantly younger than those produced with quartz inclusions. Although most of the corrected fine grain dates were consistent with the medieval construction of the churches, the brick fabric is of Roman type by archaeological assessment, and this is supported by the quartz coarse grain dates. We conclude that the bricks sampled are re-used, likely to be of Roman origin, and that the reliability of measurements with feldspars in brick fabrics requires wider investigation. [less ▲]

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See detailIntercomparisons of MIPAS operational N2O and HNO3 profiles with ground based FTIR data
Vigouroux, C.; De Mazière, M.; Wood, S. et al

Poster (2004, July)

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See detailIntercultural Education in French-speaking Belgium : an overview of ideology, legislation and practice
Martiniello, Marco ULg; Manço, Altay

in European Journal of Intercultural Education (1993), 4(2), 19-28

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See detailInterculturalism and 'Alternative Fictions' in Britain Today
Maes-Jelinek, Hena ULg

in Antor, Heinz; Stierstorfer, Klaus (Eds.) English Literatures in International Contexts (2000)

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See detailL'Interculturalité a-t-elle un avenir ?
Defays, Jean-Marc ULg

in Dufays, Jean-Louis; Collès, Luc; Thyrion, Francine (Eds.) Quelle didactique de l'interculturel dans les nouveaux contextes du FLE/S? (2006)

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See detailInterculturalité et didactique des langues
Defays, Jean-Marc ULg

Conference (2009, March)

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See detail"Interculturalité et didactique des langues étrangères"
Defays, Jean-Marc ULg

in Defays, Jean-Marc (Ed.) Plurilinguisme et diversité culturelle dans les relations internationales; Points de vue russes et belges (2011)

Detailed reference viewed: 81 (7 ULg)