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See detailRapport belge sur la propriété des sols
Lecocq, Pascale ULg

Scientific conference (2003)

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See detailExercices de mathématiques pour le premier cycle — Volume 2 : Analyse
Dupont, Pascal ULg

Book published by De Boeck Université - 2e édition (2003)

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See detailExercices de mathématiques pour le premier cycle — Volume 1 : Algèbre et géométrie
Dupont, Pascal ULg

Book published by De Boeck Université - 2e édition (2003)

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See detailProlonged imiquimod treatment and graft-versus-host reaction: histological mimicry in the skin infiltration pattern of the monocyte-macrophage-dendrocyte lineage.
Hermanns-Lê, Trinh ULg; Paquet, Philippe ULg; Nikkels, Arjen ULg et al

in Dermatology : International Journal for Clinical & Investigative Dermatology (2003), 206(4), 361-365

Factor-XIIIa-positive dendrocytes belong to the monocyte-macrophage-dendrocyte (MMD) lineage which is considered to play a pivotal role in the skin response to the immune response modifier imiquimod. The ... [more ▼]

Factor-XIIIa-positive dendrocytes belong to the monocyte-macrophage-dendrocyte (MMD) lineage which is considered to play a pivotal role in the skin response to the immune response modifier imiquimod. The same cells are also boosted in low-grade graft-versus-host reaction (GVHR) with skin manifestations. Both conditions are characterized by specific epidermal damage. The aim of the present study was to compare them using immunohistochemistry to identify MMD subsets and other inflammatory cells in the dermis. We compared 3 cases of long-term (4, 9 and 11 months) imiquimod topical applications on normal skin, 25 low-grade GVHR controlled by immunosuppressive therapy and 25 control cases with normal skin. Compared to the normal dermis, cells of the MMD lineage were considerably boosted in the dermis of GVHR and at the imiquimod-treated sites. By contrast, only minimal accumulations of lymphocytes and Langerhans cells were disclosed in the dermis. The pattern of dermal infiltration by MMD cells was similar in GVHR and after imiquimod treatment. However, intraindividual differences in densities were obvious irrespective of the skin condition. In conclusion, there is great mimicry in the MMD involvement in the dermis during low-grade GVHR and after chronic applications of imiquimod. [less ▲]

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See detailAnalysis and Design of Ship Structure (Chap 18)
Rigo, Philippe ULg; Rizzutto, E.

in Ship Design and Construction (Vol 1) (2003)

The SNAME book is a ref book in ship Design and Construction. Chap 18, wriiten by P Rigo and his coleague focuss on Ship Structure. It is a typical lecture book.

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See detailMonitoring of the variability and long-term evolution of tropospheric constituents by Infrared solar absorption spectrometry at the Jungfraujoch, Switzerland.
Zander, Rodolphe ULg; Mahieu, Emmanuel ULg; Duchatelet, Pierre ULg et al

in Borrell, P.; Borrell, P. M.; Burrows, J. P. (Eds.) et al Sounding the Troposphere from Space: A new era for Atmospheric Chemistry. (2003)

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See detailInduced sputum studies in asthma
LOUIS, Renaud ULg; Chanez, P

in Djukanovic, Ratko; Sterk, Peter J. (Eds.) An Atlas of INDUCED SPUTUM : an Aid for Research and Diagnosis. (2003)

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See detailGrowth hormone (GH) secretion in patients with childhood-onset GH deficiency: Retesting after one year of therapy and at final height
Thomas, Muriel; Massa, Guy; Maes, Maes et al

in Hormone Research (2003), 59(1), 7-15

Background. Recent studies have shown that many patients treated with growth hormone (GH) during childhood because of idiopathic GH deficiency (GHD) are no longer GH deficient when retested after ... [more ▼]

Background. Recent studies have shown that many patients treated with growth hormone (GH) during childhood because of idiopathic GH deficiency (GHD) are no longer GH deficient when retested after cessation of GH therapy when final height is achieved. These patients are labelled as transient GHD. We hypothesized that normalization of GH secretion in transient GHD could occur earlier during the course of GH treatment, which could allow earlier cessation of GH treatment. Methods: In a retrospective study, GH secretion was re-evaluated after cessation of GH treatment at final height in 43 patients diagnosed during childhood as idiopathic GHD 10 with multiple pituitary hormonal deficiencies (MPHD) and 33 with isolated GHD ([sGHD]). In a prospective study, GH secretion was re-assessed after interruption of GH treatment given for 1 year in 18 children with idiopathic GHD (2 MPHD, 16 IsGHD). GH secretion was evaluated by glucagon or insulin stimulation tests. Results: In the retrospective study, all the 10 patients with MPHD and 64% of the 33 patients with IsGHD were still deficient at re-evaluation using the paediatric criteria to define GHD (GH peak < 10 ng/ml at provocative test). The proportion of persisting deficiency was greater in patients with complete IsGHD (86%, 12/14 patients) than in patients with partial IsGHD (47%, 9/19 patients). With the criteria proposed in adulthood (GH peak <3 ng/ml), all the 10 patients with MPHD were still considered to be deficient. In contrast, only 15% (5/33 patients) with IsGHD had a maximal GH value < 3 ng/ml (36% of the 14 patients with complete IsGHD and none of the 19 patients with partial IsGHD). In the prospective study, after interruption of GH therapy given for 1 year, the 2 patients with MPHD were still GHD at re-evaluation and they resumed GH treatment. Among the 16 patients with IsGHD, 13 (81%) were still deficient (peak response < 10 ng/ml) after 1 year. Two of the 3 patients in whom GHD was not confirmed at retesting after 1 year GH showed again a deficient response at second retesting. Conclusions: Although many patients diagnosed with IsGHD during childhood have a normalized GH secretory capacity when retested during adulthood, early retesting after interruption of GH treatment given for 1 year during childhood does not enable to determine if GH therapy has to be discontinued before cessation of growth. Copyright (C) 2003 S. Karger AG, Basel. [less ▲]

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See detailAssessment of microbiological criteria for regular checks of faecal contamination and general hygiene in Belgian establishments producing meat
Ghafir, Yasmine; Daube, Georges ULg; Dierick, Katleen et al

in Sciences des Aliments (2003), 23(1), 104-106

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See detailPathologic fracture following humeral bone tumor in a mare
Bolen, Géraldine ULg; Péters, F.; Heimann, M. et al

Poster (2003)

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See detailPhosphate mineral formation in Lake Baïkal sediments and implications for paleoclimate
Fagel, Nathalie ULg; Alleman, L. Y.; André, Luc et al

Poster (2003)

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See detailAmmonium sulphate as promoting agent of the sulphidization process of oxidized Cu-Co ores from the Luiswishi deposit (RDC)
Bastin, David ULg; Frenay, Jean ULg; Philippart, Pierre

Poster (2003)

The Luiswishi deposit belongs to the Cu-Co deposits of the Southern Group of the Katangian Copper Belt and is operated by a joint venture between EGMF (Entreprises Générales Malta Forrest) and Gecamines ... [more ▼]

The Luiswishi deposit belongs to the Cu-Co deposits of the Southern Group of the Katangian Copper Belt and is operated by a joint venture between EGMF (Entreprises Générales Malta Forrest) and Gecamines (Générale des Carrières et des Mines). The Cu-Co ore is beneficiated by the sulphidization process at the NCK (New Concentrator of Kipushi) at Kipushi. Sulphidization followed by flotation with sulphydryl collectors is a common practice for the treatment of oxidized base metals ores. This process is complex and its application at the industrial scale is quite sensitive. In Central Africa it is also a cost intensive treatment as the sulphidizing agent has to be imported. In order to improve the metallurgical performances and to optimise the economics of the process, a laboratory research program was carried out by the Laboratory of Metallurgy and Mineral Processing (MTM) of the University of Liège in close collaboration with EGMF and Gecamines. This program included the study of various flotation reagents as dispersing, depressing and activating agents. This paper presents the results obtained with the use of ammonium sulphate as activator of the sulphidized xanthate flotation. Although ammonium sulphate has been mentioned in the literature as a promoting agent of the sulphidized xanthate flotation of malachite, its effects on the flotation of cobalt oxides was not known. The testworks were carried out on various oxidized siliceous ore types from the Luiswishi deposit. A 1.7 l Agitair laboratory flotation cell was used. NaHS and potassium amylxanthate were respectively choosen as sulphidizer and collector. A mixture of gasoil and tall oil (90/10) was used as secondary collector. A multistage sulphidization was realised. Values of pH were followed during the different tests and an ion selective electrode Ag/Ag2S was used to control the Es potentiel evolution during the stepwise addition of the sulphidizer. The addition of ammonium suphate [(NH4)2SO4] simultaneously with NaHS led to the following results: -A marked improvement of the sulfidization kinetics leading to shorter conditioning times and limiting the number of sulphidizing stages required to reach maximum recoveries. -The inhibition of the depressive effect on Cu and Co flotation of an excess of hydrosulphide ions in the pulp. -An improvement of the selectivity of the flotation combined with higher cobalt recoveries. The promoting effect is indeed more effective for cobalt than for copper and cobalt recoveries were improved by 4 to 8 %. -A significant decrease of the sulfidizer consumption. These laboratory results were implemented at an industrial scale at the NCK at Kipushi. In close accordance with the laboratory results the sulphidization kinetics were improved and the cobalt recoveries rose by 7 % while maintaining the previous Cu and Co grades of the concentrate. Ammonium sulphate being a low cost and common reagent (it is easily found in the fertiliser industry or as a byproduct of the coke industry), its use significantly improved the economics of the flotation of Cu-Co oxides ores from the Luiswishi deposit. [less ▲]

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See detailLes effets de la formation professionnelle continue : une enquête auprès des bénéficiaires des actions du Fonds social européen en Wallonie et à Bruxelles
Conter, Bernard; Maroy, Christian; Orianne, Jean-François ULg

in Politiques d'Education et de Formation : Analyses et Comparaisons Internationales (2003), 7

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See detailOptimization, continuation and lack of the one-step diphosphorylation reaction. Assay of modification of the tetraethyl(pyrrolidine-2,2-diyl)bisphosphonate
Olive, Gilles ULg; Jacques, Alain

in Phosphorus, Sulfur & Silicon & the Related Elements (2003), 178(1), 33-46

The optimization of the one-step diphosphorylation reaction is reported. The synthesis of new ®-aminobisphosphonates with four- and sixmembered rings and acyclic species with several substituents on the ... [more ▼]

The optimization of the one-step diphosphorylation reaction is reported. The synthesis of new ®-aminobisphosphonates with four- and sixmembered rings and acyclic species with several substituents on the nitrogen atom and on the carbon atom bearing the two phosphorus atoms is described. [less ▲]

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See detailEtat des lieux. L’espagnol, l’italien et les autres langues romanes en Belgique francophone
Fabry, Geneviève; Lucchini, Silvia ULg

in Collès, L.; Dufays, J.-L.; Maeder, C. (Eds.) Enseigner le français, l'espagnol et l'italien. (2003)

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See detailMultimarker approach to risk stratification
Chapelle, Jean-Paul ULg

in Clinical Chemistry & Laboratory Medicine (2003), 41

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