Publications ORBi OA
Bookmark and Share    
Full Text
Peer Reviewed
See detailLe kimbanguisme : un millénarisme dynamique de la terre aux Cieux
Melice, Anne ULg

in Bulletin des Séances de l’Académie Royale des Sciences d’Outre-Mer = Mededelingen der Zittingen van de Koninklijke Academie voor Overzeese Wetenschappen (2001), 47 (suppl.)

Detailed reference viewed: 59 (9 ULg)
See detailIntroduction à E-LOTOS
Leduc, Guy ULg; Jeffrey, Alan; Sighireanu, Mikhaela

in Ingénierie des protocoles et qualité de service (2001)

Detailed reference viewed: 22 (1 ULg)
See detailMultimedia in the E-LOTOS Process Algebra
Leduc, Guy ULg

in Formal Methods for Distributed Processing - A Survey of Object Oriented Approaches (2001)

We illustrate how the ISO E-LOTOS language can be used to describe an ODP multicast multimedia binding object of some complexity. The timing features of the language are briefly recalled, and play a major ... [more ▼]

We illustrate how the ISO E-LOTOS language can be used to describe an ODP multicast multimedia binding object of some complexity. The timing features of the language are briefly recalled, and play a major role in the description of the example, but many other features of E-LOTOS are also very useful to obtain a more modular and more readable specification. Users familiar with LOTOS will also learn how some E-LOTOS features can advantageously replace the traditional LOTOS ones. [less ▲]

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailMicrophase separation at the surface of block copolymers, as studied with atomic force microscopy
Rasmont, A.; Leclère, Philippe; Doneux, C. et al

in Colloids and Surfaces B : Biointerfaces (2000), 19(4), 381-395

Atomic force microscopy (AFM) is used to study the phase separation process occurring in block copolymers in the solid state. The simultaneous measurement of the amplitude and the phase of the oscillating ... [more ▼]

Atomic force microscopy (AFM) is used to study the phase separation process occurring in block copolymers in the solid state. The simultaneous measurement of the amplitude and the phase of the oscillating cantilever in the tapping mode operation provides the surface topography along with the cartography of the microdomains of different mechanical properties. This technique thus allows to characterize the size and shape of those microdomains and their organization at the surface (e.g. cubic lattice spheres, hexagonal lattice of cylinders, or lamellae). In this study, a series of symmetric triblock copolymers made of a inner elastomeric sequence (poly(butadiene) or poly(alkylacrylate)) and two outer thermoplastic sequences (poly(methylmethacrylate)) is analyzed by AFM in the tapping mode. The microphase separation and their morphology are essential factors for the potential of these materials as a new class of thermoplastic elastomers. Special attention is paid to the control of the surface morphology, as observed by AFM, by the molecular structure of the copolymers (volume ratio of the sequences, molecular weight, length of the alkyl side group) and the experimental conditions used for the sample preparation. The molecular structure of the chains is completely controlled by the synthesis, which relies on the sequential living anionic polymerization of the comonomers. The copolymers are analyzed as solvent-cast films, whose characteristics depend on the solvent used and the annealing conditions. The surface arrangement of the phase-separated elastomeric and thermoplastic microdomains observed on the AFM phase images is discussed on the basis of quantitative information provided by the statistical analysis by Fourier transform and grain size distribution calculations. [less ▲]

Detailed reference viewed: 44 (3 ULg)
Full Text
See detailCyclic esterketone compounds, processes for the synthesis thereof
Wautier, Henri; Latere, Jean-Pierre; Lecomte, Philippe ULg et al

Patent (2000)

Cyclic esterketone compounds, and in particular, 2-oxepane-1,5-dione, which are useful as a monomer for the production of polymers, and in particular for the production of poly(2-oxepane-1,5-dione ... [more ▼]

Cyclic esterketone compounds, and in particular, 2-oxepane-1,5-dione, which are useful as a monomer for the production of polymers, and in particular for the production of poly(2-oxepane-1,5-dione). Processes are also disclosed for both the synthesis of this new compound and for the use (polymerization) thereof for the preparation of poly(2-oxepane-1,5-dione). The poly(2-oxepane-1,5-dione) polymers and copolymers which are obtained by use of the polymerization processes with the monomer compounds are also disclosed. [less ▲]

Detailed reference viewed: 21 (2 ULg)
Full Text
See detailCyclic esterketone compounds, processes for the synthesis thereof and process for the preparation of poly(esterketone)polymers
Wautier, Henri; Latere, Jean-Pierre; Lecomte, Philippe ULg et al

Patent (2000)

Unsubstituted oxepane-diones useful as monomers for the production of polymers, process for the synthesis thereof by oxidation of unsubstituted cyclohexanediones, process for the preparation of ... [more ▼]

Unsubstituted oxepane-diones useful as monomers for the production of polymers, process for the synthesis thereof by oxidation of unsubstituted cyclohexanediones, process for the preparation of polyesterketone polymers by polymerisation of cyclic esterketones and polyesterketone polymers so obtained. [less ▲]

Detailed reference viewed: 8 (1 ULg)
Full Text
See detailSystème de positionnement universel (GPS)
Debouche, Charles ULg

Scientific conference (2000, December 20)

Detailed reference viewed: 8 (0 ULg)
Full Text
Peer Reviewed
See detailType Iv Collagen Induces Matrix Metalloproteinase 2 Activation in Ht1080 Fibrosarcoma Cells
Maquoi, Erik ULg; Frankenne, F.; Noël, Agnès ULg et al

in Experimental Cell Research (2000), 261(2), 348-59

Matrix metalloproteinase 2 (MMP-2) activation has been described as a "master switch" which triggers tumor spread and metastatic progression. We show here that type IV collagen, a major component of ... [more ▼]

Matrix metalloproteinase 2 (MMP-2) activation has been described as a "master switch" which triggers tumor spread and metastatic progression. We show here that type IV collagen, a major component of basement membranes, promotes MMP-2 activation by HT1080 cells. When plated on plastic, HT1080 cells constitutively processed the 66-kDa pro-MMP-2 into a 62-kDa intermediate activated form, most probably through a membrane type (MT) 1 MMP-dependent mechanism. In the presence of type IV collagen, part of this intermediate form was further processed to fully activated 59-kDa MMP-2. This activation was prevented by tissue inhibitor of MMP (TIMP)-2 and a broad-spectrum hydroxamic acid-based synthetic MMP inhibitor (GI129471). Type IV collagen-mediated pro-MMP-2 activation did not involve either a transcriptional modulation of MMP-2, MT1-MMP, or TIMP-2 expression nor any alteration of MT1-MMP protein synthesis or processing. An inverse relationship between MMP-2 activation and the concentration of secreted TIMP-2 was observed. This is consistent with our previous report that TIMP-2 degradation is probably linked to the MT1-MMP-dependent MMP-2 activation mechanism. Because invasive tumor cells must breach basement membranes at different steps of the metastatic dissemination, the ability of HT1080 cells to activate pro-MMP-2 in the presence of type IV collagen might represent a key regulatory mechanism for the acquisition of an invasive potential. [less ▲]

Detailed reference viewed: 33 (0 ULg)
Full Text
See detailProtection fongicide du blé intégrée au mode de conduite de la culture: exemple de la Belgique
Bodson, Bernard ULg; Meeus, Patrick; Moreau, Jean-Marc et al

in Conférence internationale sur les maladies des plantes (2000, December 06)

Yields of wheat crop have increased by nearly 3T/ha during the last twenty years, due to amongst other things progressive transformation of the wheat plant. The grain filling phasis became preponderant in ... [more ▼]

Yields of wheat crop have increased by nearly 3T/ha during the last twenty years, due to amongst other things progressive transformation of the wheat plant. The grain filling phasis became preponderant in the yield elaboration of crops with 10 tons and more per hectare. Consequently it is necessary to adapt the way of crop growing, especially increasing nitrogen dressing at flat leave. The fungicide protection must be reasonned according to these evolutions and have as main objective to maintain the upper parts of the plant without disease. [less ▲]

Detailed reference viewed: 30 (0 ULg)
Full Text
Peer Reviewed
See detailPlacental growth hormone (GH), GH-binding protein, and insulin-like growth factor axis in normal, growth-retarded, and diabetic pregnancies: Correlations with fetal growth
McIntyre, H. D.; Serek, R.; Crane, D. I. et al

in Journal of Clinical Endocrinology and Metabolism (2000), 85(3), 1143-1150

We previously described significant changes in GH-binding protein (GHBP) in pathological human pregnancy. There was a substantial elevation of GHBP in cases of noninsulin-dependent diabetes mellitus and a ... [more ▼]

We previously described significant changes in GH-binding protein (GHBP) in pathological human pregnancy. There was a substantial elevation of GHBP in cases of noninsulin-dependent diabetes mellitus and a reduction in insulin-dependent diabetes mellitus. GHBP has the potential to modulate the proportion of free placental GH (PGH) and hence the impact on the maternal GH/insulin-like growth factor I (IGF-I) axis, fetal growth, and maternal glycemic status. The present study was undertaken to investigate the relationship among glycemia, GHBP, and PGH during pregnancy and to assess the impact of GHBP on the concentration of free PGH. We have extended the analysis of specimens to include measurements of GHBP, PGH, IGF-I, IGF-II, IGF-binding protein-1 (IGFBP-1), IGFSP-2, and IGFBP-3 and have related these to maternal characteristics, fetal growth, and glycemia. The simultaneous measurement of GHBP and PGH has for the first time allowed calculation of the free component of PGH and correlation of the free component to indexes of fetal growth and other endocrine markers. PGH, free PGH, IGF-I, and IGF-II were substantially decreased in IUGR at 28-30 weeks gestation (K28) and 36-38 weeks gestation (K36). The mean concentration (+/-SEM) of total PGH increased significantly from K28 to K36 (30.0 +/- 2.2 to 50.7 +/- 6.2 ng/mL; n = 40), as did the concentration of free PGH (23.4 +/- 2.3 to 43.7 +/- 6.0 ng/mL; n = 38). The mean percentage of free PGH was significantly less in IUGR than in normal subjects (67% vs. 79%; P < 0.01). Macrosomia was associated with an increase in these parameters that did not reach statistical significance. Multiple regression analysis revealed that PGH/IGF-I and IGFBP-5 account for 40% of the variance in birth weight. IGFBP-3 showed a significant correlation with IGF-I, IGF-II, and free and total PGK at K28 and K36. Noninsulin-dependent diabetes mellitus patients had a lower mean percentage of free PGH (65%; P < 0.01), and insulin-dependent diabetics had a higher mean percentage of free PGH (87%; P < 0.01) than normal subjects. Mean postprandial glucose at K28 correlated positively with PGH and free PGH (consistent with the hyperglycemic action of GH). GHBP correlated negatively with both postprandial and fasting glucose. Although GHBP correlated negatively with PGH (r = -0.52; P <.001), free PGH and total PGH correlated very closely (r = 0.98). The results are consistent with an inhibitory function for GHBP in vivo and support a critical role for placental GH and IGF-I in driving normal fetal growth. [less ▲]

Detailed reference viewed: 31 (8 ULg)
Full Text
Peer Reviewed
See detailTolerance to the Foeto-Placental 'Graft': Ten Ways to Support a Child for Nine Months
Thellin, Olivier ULg; Coumans, Bernard ULg; Zorzi, Willy ULg et al

in Current Opinion in Immunology (2000), 12(6), 731-7

Tolerance to the foetal 'allograft' has been extensively studied in the past few years, providing interesting new insights. In addition to a potential role for HLA-G, which has been widely discussed ... [more ▼]

Tolerance to the foetal 'allograft' has been extensively studied in the past few years, providing interesting new insights. In addition to a potential role for HLA-G, which has been widely discussed, there are hypotheses suggesting roles for several other molecules or cells: leukemia inhibitory factor and its receptor; indoleamine 2. 3-dioxygenase; the Th1/Th2 balance; suppressor macrophages; hormones such as progesterone or the placental growth hormone; CD95 and its ligand; and, as recently proposed, annexin II. Tolerance of the foetal allograft is probably the consequence of a wide panel of mechanisms that may or may not be pregnancy-specific, that are of major or secondary importance and that may be interconnected. [less ▲]

Detailed reference viewed: 25 (5 ULg)
Full Text
See detailMise en place d'un système de management environnemental
Nicolas, Jacques ULg; Bauraing, Eddy; Von Frenckell, Marianne ULg

Report (2000)

The project aimed at providing synthetic and operational guidelines to the managers of companies willing to begin a procedure of environmental management system (EMS). After an introduction, summarizing ... [more ▼]

The project aimed at providing synthetic and operational guidelines to the managers of companies willing to begin a procedure of environmental management system (EMS). After an introduction, summarizing the EMS principle, the document presents the different steps of the protocol and the useful recommendations at each step. The different possibilities of assistance are also presented (on-line web sites, teaching or administrative resources). Two annexes are provided : a first one devoted to environmental performance indicators and a second one to the management review writing. [less ▲]

Detailed reference viewed: 39 (3 ULg)
Full Text
See detailDevelopment of a mobile compound composition tester. Phase II : Segregation of tires at retreading stage / Functional specification for a handheld prototype
Maternova, Jindriska; Nicolas, Jacques ULg

Report (2000)

The object of the second phase of the study is a technical support/advise to the construction of a portable prototype equipment for on site segregation of tires at the retreading stage. The final ... [more ▼]

The object of the second phase of the study is a technical support/advise to the construction of a portable prototype equipment for on site segregation of tires at the retreading stage. The final equipment aims at identifying the composition type of the rubber of the treads : either high natural rubber content (>60%) or high synthetic rubber content. An additional goal of the study is to elaborate the functional specifications for a handheld compound analyser to be coupled to the Goodyear viscoelasticity tester. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
See detailD’un Soir à l’autre
Durand, Pascal ULg

Article for general public (2000)

Detailed reference viewed: 23 (4 ULg)
Full Text
See detailProtection fongicide intégrée au mode de conduire de la culture. Exemple du blé en Belgique
Bodson, Bernard ULg; Meeùs, Patrick; Moreau, Jean-Marc et al

in Phytoma : La Défense des Végétaux (2000), 533

Detailed reference viewed: 9 (0 ULg)
Full Text
See detailContrôle de gestion
Van Caillie, Didier ULg

Learning material (2000)

This seminar describes basic concepts used to implement either a cost accounting system, a cost management system or a management control system in a firm

Detailed reference viewed: 74 (12 ULg)
Full Text
Peer Reviewed
See detailEvaluation de l'efficacité de la lutte chimique contre Helicoverpa armigera sur le cotonnier durant la campagne agricole 1996 au Burkina Faso
Toé, A.M.; Héma, S.A.O.; Schiffers, Bruno ULg

in Etudes et Recherches Sahéliennes (2000), 4-5

ln 1996, the cotton subsector in Burkina Faso experienced a great crisis which was drama-like here and there. An exceptionally high infestation of cotton plants by the main pest, Helicoverpa armigera (a ... [more ▼]

ln 1996, the cotton subsector in Burkina Faso experienced a great crisis which was drama-like here and there. An exceptionally high infestation of cotton plants by the main pest, Helicoverpa armigera (a density of 167n500 worms par hectare) on treated plots whereas the theoretical intervention threshold is ranging from 5,000 to 12,500 Army-worms per hectare could not be controlled by the released insecticides. This year, the infestation intensity was at least sirnilar with the one of the year 1991 in which harvest losses had been estimated at 50,000 tons of seed cotton (NIBOUCHE 1994), i.e. a loss of about 20 billion francs CFA. The aftermath was really heavy for the productucers, SOFITEX and the Burkina state. Four years later, well informed and well-advised experts take into consideration the natural factors and hurnan opcrational factors that are the source of this economie drarna : findings from two independent expert reports produced according to Laboratory Good Pratices (GLP) at the request of civil society on sorne pesticides, highlited concordantly their poor quality (low active ingredient. content, poor quality of formulations). This work, whilst restoring truth in a fair and unbiased way, states the reasons for our past and current failures as weil as the reasons for our future successes. By proposing a new approach to studies on the efficacy of cotton insecticides, tbis work contributes to the seeking of a better phytosanitary protection for cotton in the countries of the sub-region. [less ▲]

Detailed reference viewed: 23 (2 ULg)
Full Text
See detailAnalyse des interactions verbales dont les joueurs se souviennent à l'issue d'une rencontre de sport collectif
Cloes, Marc ULg; Résimont, Bernard; Piéron, Maurice ULg

Poster (2000, December)

The goals of the study were : (1) to determine if team sport players are able to recall verbal interventions provided by the coach during the match; (2) to analyze the characteristics of those that are ... [more ▼]

The goals of the study were : (1) to determine if team sport players are able to recall verbal interventions provided by the coach during the match; (2) to analyze the characteristics of those that are well recalled. We followed one volleyball team and one basketball team during the 1998-1999 season. Both teams competed in the second Belgian division and belonged to the best clubs of the region of Liege. Data were collected during four matches. Players were interviewed after each match in order to collect their opinions about the interventions emitted by the coach. [less ▲]

Detailed reference viewed: 65 (1 ULg)