References of "Scientific journals"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailFactors controlling the distribution of diatoms and Phaeocystis in the Ross Sea
Goffart, Anne ULg; Catalano, Guilio; Hecq, Jean-Henri ULg

in Journal of Marine Systems (2000), 27

The spatial and temporal distributions of phytoplankton pigments were investigated in the western and south central Ross Sea during austral spring 1994 and summer 1990. Large gradients in biomass and ... [more ▼]

The spatial and temporal distributions of phytoplankton pigments were investigated in the western and south central Ross Sea during austral spring 1994 and summer 1990. Large gradients in biomass and phytoplankton community composition were observed both in the east-west and south-north directions, in relation to differences in water column structure and stability, which themselves depend on the processes of ice retreat within the different areas. Important are melting in the western Ross Sea, which induces strong stratification, and ice breakup and wind stress in the south central Ross Sea, which result in deep mixing and weakly stratified waters. In the western Ross Sea, the highest chl a concentrations observed in this study (129 - 358 mg m-2 in the upper 100 m) were tightly coupled to the stratified region of meltwater influence and were dominated by diatoms, as indicated by elevated fucoxanthin concentrations (89 - 239 mg m-2 in the upper 100 m). In the diatom bloom area, high levels of phaeophorbides a (maximum value of 192 mg . m-2 in the upper 100 m) indicated that the dominant grazers, identified as Limacina helecina and copepods (Hecq et al., 1992), transferred a sustained part of the diatom production to the herbivore trophic level. Synthesis of our data with published information suggests that the diatom bloom we observed in the western Ross Sea was dominated by the species Fragilariopsis curta, and occurs annually off the coast of Victoria Land from 72°30'S to 77°S within 100 to 250 km from the coastal ice edge. It is assumed to persist on the order of 2.5 - 3 months during summer. In the south central Ross Sea, which was characterized by a poorly or unstratified water column, moderate chl a concentrations (55 - 186 mg m-2 in the upper 100 m) were found in the polynya and in the ice edge area in early spring. 19'-hexanoyloxyfucoxanthin, a biomarker for Phaeocystis, was the major contributor to the total carotenoid abundance (29 - 132 mg m-2 in the upper 100 m), corroborating the hypothesis that Phaeocystis are well adapted to develop in a relatively mixed water column. At the northern limit of the polynya, a quite narrow (c. a. 30 km) diatom bloom (31 - 67 mg fucoxanthin m-2 in the upper 100 m) overlapped with the Phaeocystis bloom in the slightly stratified marginal ice zone. This was an area of increased grazing pressure by various types of herbivorous zooplankton, among which very large amounts of krill were observed. [less ▲]

Detailed reference viewed: 90 (15 ULg)
Full Text
Peer Reviewed
See detailSuccessful mobilization of peripheral blood HPCs with G-CSF alone in patients failing to achieve sufficient numbers of CD34+ cells and/or CFU-GM with chemotherapy and G-CSF.
Fraipont, V.; Sautois, Brieuc ULg; Baudoux, Etienne ULg et al

in Transfusion (2000), 40(3), 339-47

BACKGROUND: Mobilization with chemotherapy and G-CSF may result in poor peripheral blood HPC collection, yielding <2 x 10(6) CD34+ cells per kg or <10 x 10(4) CFU-GM per kg in leukapheresis procedures ... [more ▼]

BACKGROUND: Mobilization with chemotherapy and G-CSF may result in poor peripheral blood HPC collection, yielding <2 x 10(6) CD34+ cells per kg or <10 x 10(4) CFU-GM per kg in leukapheresis procedures. The best mobilization strategy for oncology patients remains unclear. STUDY DESIGN AND METHODS: In 27 patients who met either the CD34 (n = 3) or CFU-GM (n = 2) criteria or both (n = 22), the results obtained with two successive strategies-that is, chemotherapy and G-CSF at 10 microg per kg (Group 1, n = 7) and G-CSF at 10 microg per kg alone (Group 2, n = 20) used for a second mobilization course-were retrospectively analyzed. The patients had non-Hodgkin's lymphoma (5), Hodgkin's disease (3), multiple myeloma (5), chronic myeloid leukemia (1), acute myeloid leukemia (1), breast cancer (6), or other solid tumors (6). Previous therapy consisted of 10 (1-31) cycles of chemotherapy with additional chlorambucil (n = 3), interferon (n = 3), and radiotherapy (n = 7). RESULTS: The second collection was undertaken a median of 35 days after the first one. In Group 1, the results of the two mobilizations were identical. In Group 2, the number of CD34+ cells per kg per apheresis (0.17 [0.02-0.45] vs. 0.44 [0.11-0.45], p = 0. 00002), as well as the number of CFU-GM (0.88 [0.00-13.37] vs. 4.19 [0.96-21.61], p = 0.00003), BFU-E (0.83 [0.00-12.72] vs. 8.81 [1. 38-32.51], p = 0.00001), and CFU-MIX (0.10 [0.00-1.70] vs. 0.56 [0. 00-2.64], p = 0.001134) were significantly higher in the second peripheral blood HPC collection. However, yields per apheresis during the second collection did not significantly differ in the two groups. Six patients in Group 1 and 18 in Group 2 underwent transplantation, and all but one achieved engraftment, with a median of 15 versus 12 days to 1,000 neutrophils (NS), 22 versus 16 days to 1 percent reticulocytes (NS), and 26 versus 26 days to 20,000 platelets (NS), respectively. However, platelet engraftment was particularly delayed in many patients. CONCLUSION: G-CSF at 10 microg per kg alone may constitute a valid alternative to chemotherapy and G-CSF to obtain adequate numbers of peripheral blood HPCs in patients who previously failed to achieve mobilization with chemotherapy and G-CSF. This strategy should be tested in prospective randomized trials. [less ▲]

Detailed reference viewed: 105 (10 ULg)
Peer Reviewed
See detailDe l'inapplicabilite de certaines recommandations therapeutiques en pratique: l'exemple du remboursement des medicaments hypolipidemiants en Belgique.
Scheen, André ULg

in Revue Médicale de Liège (2000), 55(4), 260-4

International guidelines from the Task Force of European and other Societies on Coronary Prevention and national guidelines from the Belgian Lipid Club recently emphasized the potential interest of ... [more ▼]

International guidelines from the Task Force of European and other Societies on Coronary Prevention and national guidelines from the Belgian Lipid Club recently emphasized the potential interest of adequate management of patients with even moderate hypercholesterolaemia. However, current criteria for the reimbursement of lipid-lowering drugs in Belgium do not allow to follow these guidelines. A solution should be urgently found in order to bridge the gap and permit practitioners, after diet failure, to effectively prescribe lipid-lowering agents in patients who should benefit in priority of such a treatment. It is certainly the case in secondary prevention as well as, in high risk individuals, in primary prevention, i.e. in situations where these drugs have provided enough evidence of their efficacy with an acceptable cost-benefit ratio. [less ▲]

Detailed reference viewed: 23 (0 ULg)
Full Text
Peer Reviewed
See detailSucceeded plant regeneration from very immature embryos of Phaseolus vulgaris
Geerts, P.; Mergeai, Guy ULg; Baudoin, Jean-Pierre ULg

in Annual Report of the Bean Improvment Cooperative (2000), (43), 206-207

Detailed reference viewed: 18 (0 ULg)
Peer Reviewed
See detailLe potentiel evoque cognitif P300 (I): aspects theorique et psychobiologique.
Hansenne, Michel ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2000), 30(4), 191-210

The P300 is a positive wave which arises when an attended stimulus is detected. Its parameters depend on a number of variables, in particular the subject's mental state, the task that has to be ... [more ▼]

The P300 is a positive wave which arises when an attended stimulus is detected. Its parameters depend on a number of variables, in particular the subject's mental state, the task that has to be accomplished, the significance of the stimulus, and the degree of attention. It can be recorded with accuracy, and the different stages of information processing can therefore be analyzed. The P300 wave shows the modifications in neuronal activity which take place during the cognitive process: P300 latency provides an indirect indication of the duration of the processes involved in stimulus discrimination while its amplitude, which is influenced by a number of variables, provides an index of the intensity of the energetic activation or arousal involved. The P300 wave consists of several components which reflect distinct information-processing events (P3a, P3b, P3e, P-SR, P-CR). According to the theoretical models, it is hypothesized that P300 could either represent the adaptation of the working memory to further environmental input ('context updating'), or indicate a closing process ('context closure') in information processing. As regards the physiological aspect of P300 and its association with cortical networks, various studies have suggested that several cortical generators of P300 may co-exist: the medial temporal lobe, the temporo-parietal junction, and the medial and lateral frontal lobe. Psychopharmacological studies have shown that different neurotransmitter systems are involved in the generation and modulation of P300, namely the cholinergic, noradrenergic, dopaminergic, serotoninergic and gabaergic systems. It appears that the noradrenergic agonists increase the amplitude of P300, dopaminergic agonists may have a biphasic effect (increase/reduction), while cholinergic antagonists and gabaergic agonists reduce P300 amplitude and prolong its latency. [less ▲]

Detailed reference viewed: 90 (6 ULg)
Full Text
Peer Reviewed
See detailEffects of propofol on endothelial cells subjected to a peroxynitrite donor (SIN-1).
Mathy, Marianne ULg; Mouithys-Mickalad, Ange ULg; Kohnen, S. et al

in Anaesthesia (2000), 55(11), 1066-71

We investigated the effect of propofol on endothelial cells subjected to the peroxynitrite (ONOO-) donor 3-morpholino sydnonimine (SIN-1). Cells were incubated overnight with 0.5, 1.0 or 2.0 mM SIN-1 ... [more ▼]

We investigated the effect of propofol on endothelial cells subjected to the peroxynitrite (ONOO-) donor 3-morpholino sydnonimine (SIN-1). Cells were incubated overnight with 0.5, 1.0 or 2.0 mM SIN-1, with or without 10-3 M propofol (Diprivan). Cytotoxicity, assessed by measuring the release of pre-incorporated 51Cr, increased when the concentration of SIN-1 increased, and was significantly decreased by 10-3 M propofol (90%, 78% and 28% of protection against 0.5, 1.0 and 2.0 mM SIN-1, respectively). Cell protection against 1 mM SIN-1 was tested with 0.03-1.0 mM propofol and this was compared to tyrosine, a target molecule for peroxynitrite. Propofol protected cells in a dose-dependent manner (r = 0.98; p < 0.001) and was as effective as tyrosine. Finally, using high-performance liquid chromatography, we demonstrated that propofol reacted with ONOO- more rapidly than did tyrosine, inhibiting nitrotyrosine formation. In the absence of propofol, 3.5 mM ONOO- with 1 mM tyrosine yielded 39.6% nitrotyrosine, but nitrotyrosine was not produced when 5 mM propofol was added. We conclude that propofol protects endothelial cells against the toxicity of ONOO-. The anti-oxidant properties of propofol can be partially attributed to its scavenging effect on peroxynitrite, a property that might be relevant in pathological situations involving a significant contribution of peroxynitrite to tissue damage. [less ▲]

Detailed reference viewed: 18 (0 ULg)
Full Text
Peer Reviewed
See detailEvaluation of Accuracy of Pulse Oximetry in Newborn Calves
Uystepruyst, Christophe; Coghe, Joost; Bureau, Fabrice ULg et al

in Veterinary Journal (2000), 159(1), 71-76

In human medicine, pulse oximetry is widely used to measure non-invasively and accurately the percentage of oxygen saturation of arterial haemoglobin (SpO(2)). Recently, pulse oximetry has been used in ... [more ▼]

In human medicine, pulse oximetry is widely used to measure non-invasively and accurately the percentage of oxygen saturation of arterial haemoglobin (SpO(2)). Recently, pulse oximetry has been used in calves, but its accuracy has not been evaluated in newborn calves. The purpose of this study was to evaluate the accuracy of a pulse oximeter in newborn calves by comparing SpO(2) with arterial oxyhaemoglobin saturation (SaO(2)) obtained by use of a blood gas analyser. Fifty-five newborn calves were investigated from birth to 20 days old. Pulse oximetry readings and arterial blood samples were performed 5, 15, 30, 45, 60 min, 2, 3, 6, 12, 24 h and 1 and 3 weeks after birth. The transmission-type sensors of the pulse oximeter were fixed at the recommended site in the bovine species (at the base of the calf tail, where the skin had been shaved and was not pigmented) and arterial blood samples were withdrawn from the subclavian artery and analysed for SaO(2). Five-hundred paired data of SaO(2) and mean SpO(2)(mSpO(2)) were collected. Linear regression of the pooled data indicated a highly significant correlation of mSpO(2) with SaO(2) (r = 0.87;P< 0.001; mSpO(2) = 15.8 + 0.84 SaO(2)). The overall data bias value was positive (+2.1%), which indicated that the pulse oximeter tended to overestimate the SaO(2). The bias value for each SaO(2) category tended to become higher for lower ranges of SaO(2). Precision was also lower when SaO(2) values were low. The lower the SaO(2) value, the higher the positive bias (overestimation) and the lower the precision. These results suggest that pulse oximetry provides a relatively accurate non-invasive, immediate and portable method to monitor SaO(2) and to evaluate objectively the pulmonary function effectiveness in newborn calves during their adaptation to extra-uterine life. [less ▲]

Detailed reference viewed: 60 (2 ULg)
Full Text
Peer Reviewed
See detailNumerical computation of one-photon mazer resonances for arbitrary field modes
Bastin, Thierry ULg; Solano, E.

in Computer Physics Communications (2000), 124

We present a novel approach for solving numerically one-dimensional scattering problems and apply it for computing the emission probability of an ultracold atom interacting with an arbitrary field mode of ... [more ▼]

We present a novel approach for solving numerically one-dimensional scattering problems and apply it for computing the emission probability of an ultracold atom interacting with an arbitrary field mode of a high-Q cavity. Our method is efficient, stable and succeeds when other numerical integration methods fail. It also replaces and improves advantageously the WKB approximation. The cases of sinusoidal, sech2 and Gaussian field modes are studied and compared. Divergences with previous works, where WKB was used, are found. [less ▲]

Detailed reference viewed: 8 (1 ULg)
Full Text
Peer Reviewed
See detailLe virus de la varicelle et du zona dans le système nerveux : retraite silencieuse ou guérilla permanente ?
Rentier, Bernard ULg; Sadzot-Delvaux, Catherine ULg

in Virologie (2000), 4(3), 207-216

Varicella-zoster virus is a Herpesvirus responsible for three distinct clinical features : chicken pox (varicella), shingles (herpes zoster) and post-zosterian pain (post-herpetic neuralgia). Neurological ... [more ▼]

Varicella-zoster virus is a Herpesvirus responsible for three distinct clinical features : chicken pox (varicella), shingles (herpes zoster) and post-zosterian pain (post-herpetic neuralgia). Neurological aspects of these diseases such as complications of chicken pox, viral latency in sensory gan-glia and reactivation as shingles with concurrent and at times subsequent prolonged pain, are the sequels of the invasion of the peripheral nervous system during primary infection. Prevention is achieved by vaccination with a live attenuated virus strain and therapy calls for specific antiviral agents. In many respects, VZV behaves differently from close relatives. In particular, viral latency in the nervous system is quite different from that of other Herpesviri-dae. The recent discovery of the expression and accumulation of some viral regulatory proteins during latency, although VZV latency had always been considered silent, as well as the demonstration that these proteins are immu-nogenic are opening new avenues to investigate the mechanisms of VZV latency and the immune control of VZV reactivation. [less ▲]

Detailed reference viewed: 213 (4 ULg)
Peer Reviewed
See detailÀ propos des Tables des chansonniers romans : le projet “Intavulare"
Henrard, Nadine ULg

in Moyen Age (Le) (2000), CVI(1), 165-174

Detailed reference viewed: 10 (2 ULg)
Peer Reviewed
See detailL'etude clinique du mois. L'etude STOP-2 dans l'hypertension arterielle du sujet age.
Scheen, André ULg

in Revue Médicale de Liège (2000), 55(1), 64-6

After the demonstration of the efficacy of beta-blockers or diuretics versus placebo to prevent cardiovascular complications in elderly hypertensive patients in the first STOP-Hypertension study in 1991 ... [more ▼]

After the demonstration of the efficacy of beta-blockers or diuretics versus placebo to prevent cardiovascular complications in elderly hypertensive patients in the first STOP-Hypertension study in 1991, a Swedish group published at the end of 1999 the STOP-2 Hypertension study. The latter randomised trial showed in a similar population that the cardiovascular protection of more recent antihypertensive agents such as calcium antagonists and angiotensin-converting-enzyme inhibitors is similar to that of the conventional antihypertensive drugs used in the first study. In fact, the degree of blood pressure control appears to be more important than the type of antihypertensive drugs used, and this conclusion is reinforced by the observation that numerous patients should rapidly be treated by more than one antihypertensive agent to reach blood pressure targets. [less ▲]

Detailed reference viewed: 67 (0 ULg)
Full Text
Peer Reviewed
See detailSimultaneous measurements of thermal diffusivity, thermal conductivity and thermopower with application to copper and ceramic superconductors
Bougrine, Hassan ULg; Geys, J. F.; Dorbolo, Stéphane ULg et al

in European Physical Journal B -- Condensed Matter (2000), 13(3), 437-443

A home made experimental set-up allows us to measure the thermal conductivity, the thermopower and the thermal diffusivity simultaneously in the temperature range (20-300 K). Therefore the specific heat ... [more ▼]

A home made experimental set-up allows us to measure the thermal conductivity, the thermopower and the thermal diffusivity simultaneously in the temperature range (20-300 K). Therefore the specific heat can be deduced. The role of a radiation shield is shown to be relevant. Tests of the system are made on a 99.9% pure Cu sample and two polycrystalline cuprate ceramics for illustration. Without any complicated optimisation, the technique indicates much promise already due to its efficiency and rapidity. [less ▲]

Detailed reference viewed: 73 (13 ULg)
Full Text
See detailLa compréhension des opérations additives et soustractives au travers de la résolution de problèmes arithmétiques : présentation des axes directeurs d'une thèse de doctorat en cours de préparation
Fagnant, Annick ULg

in Cahiers du Service de Pédagogie Expérimentale (SPE) (2000), (3-4), 117-132

Cette recherche fait l'objet d'une thèse de doctorat, présentée par l'auteur du présent article dans le cadre d'un mandat d'aspirant au F.N.R.S. Le projet est encadré par une comité de thèse constitué de ... [more ▼]

Cette recherche fait l'objet d'une thèse de doctorat, présentée par l'auteur du présent article dans le cadre d'un mandat d'aspirant au F.N.R.S. Le projet est encadré par une comité de thèse constitué de Marcel Crahay (directeur de thèse, ULg), de Jacqueline Beckers (ULg) et de Lieven Verschaffel (KUL). A l'heure actuelle, l'état d'avancement des travaux ne permet pas encore de présenter les résultats des investigations. Le présent article vise à donner un aperçu des différents axes sur lesquels porte l'étude. [less ▲]

Detailed reference viewed: 74 (3 ULg)
Peer Reviewed
See detailAnalysis of foodborne disease in Belgium in 1997.
Van Loock, F.; Ducoffre, G.; Dumont, J.-M. et al

in Acta Clinica Belgica (2000), 55

Detailed reference viewed: 22 (4 ULg)
Full Text
Peer Reviewed
See detailUn outil d’optimisation des structures orthotropes intégré à l’avant-projet
Rigo, Philippe ULg

in Construction Métallique (2000)

Detailed reference viewed: 539 (0 ULg)
See detailESR associated with spin-labelling methods into the study of photosensitization in liposomal solutions
Hoebeke, Maryse ULg

in Bulletin de la Société Royale des Sciences de Liège (2000)

Detailed reference viewed: 6 (2 ULg)
Full Text
Peer Reviewed
See detailIdentification and characterization of a protozoan uncoupling protein in Acanthamoeba castellanii.
Jarmuszkiwicz, W.; Milani, G.; Fortes, F. et al

in FEBS Letters (2000), 467

An uncoupling protein (UCP) was identified in mitochondria from Candida parapsilosis (CpUCP), a non-fermentative parasitic yeast. CpUCP was immunodetected using polyclonal antibodies raised against plant ... [more ▼]

An uncoupling protein (UCP) was identified in mitochondria from Candida parapsilosis (CpUCP), a non-fermentative parasitic yeast. CpUCP was immunodetected using polyclonal antibodies raised against plant UCP. Activity of CpUCP, investigated in mitochondria depleted of free fatty acids, was stimulated by linoleic acid (LA) and inhibited by GTP. Activity of CpUCP enhanced state 4 respiration by decreasing DeltaPsi and lowered the ADP/O ratio. Thus, it was able to divert energy from oxidative phosphorylation. The voltage dependence of electron flux indicated that LA had a pure protonophoretic effect. The discovery of CpUCP proves that UCP-like proteins occur in the four eukaryotic kingdoms: animals, plants, fungi and protists. [less ▲]

Detailed reference viewed: 14 (2 ULg)
Full Text
Peer Reviewed
See detailL'hypnosedation, un nouveau mode d'anesthesie pour la chirurgie endocrinienne cervicale. Etude prospective randomisee.
Defechereux, Thierry ULg; Degauque, C.; Fumal, I. et al

in Annales de Chirurgie (2000), 125(6), 539-46

Retrospective studies have confirmed the feasibility and safety of thyroid and parathyroid procedures performed under hypnoanesthesia (hypnosis, local anesthesia and minimal conscious sedation) as sole ... [more ▼]

Retrospective studies have confirmed the feasibility and safety of thyroid and parathyroid procedures performed under hypnoanesthesia (hypnosis, local anesthesia and minimal conscious sedation) as sole method of anesthesia. This very effective technique seems to provide physiological, psychological and economic benefits for the patient. STUDY AIM: To assess, by means of a prospective randomized study, the advantages of hypnosedation as an alternative to general anesthesia in terms of clinical and laboratory parameters. PATIENTS AND METHODS: Twenty patients operated under hypnoanesthesia were compared to 20 patients operated under conventional anesthesia. The two groups were compared in terms of inflammatory, neuroendocrine, hemodynamic and immunologic parameters and postoperative course (pain, fatigue, muscle strength and stress). RESULTS: No clinical or demographic differences were observed between the two groups. Operative times, bleeding, weight of specimens, and surgical comfort were similar. Significant differences in terms of inflammatory response and hemodynamic parameters were observed in favor of hypnoanesthesia. Neuroendocrine and immunological parameters were similar. Patients of the hypnoanesthesia group had significantly less postoperative pain. Postoperative fatigue syndrome and convalescence were significantly improved in these patients. CONCLUSION: This study confirms that, in our hands, hypnosedation presents real advantages over general anesthesia, in patients undergoing thyroid surgery. [less ▲]

Detailed reference viewed: 68 (5 ULg)
Full Text
See detailLe mélèze, un atout dans les objectifs de diversification de notre sylviculture.
Pauwels, Dominique; Rondeux, Jacques ULg

in Silva Belgica (2000), 107(2), 6-12

Le présent article s'attachera à présenter l'essence, son tempérament, son écologie, quelques critères permettant d'orienter le choix de la station et de l'espèce ainsi que les qualités et usages qu'on ... [more ▼]

Le présent article s'attachera à présenter l'essence, son tempérament, son écologie, quelques critères permettant d'orienter le choix de la station et de l'espèce ainsi que les qualités et usages qu'on peut en attendre. Cette présentation ne se veut pas exhaustive, elle est volontairement destinée à l'usage pratique des gestionnaires et propriétaires forestiers désireux de planter du mélèze. [less ▲]

Detailed reference viewed: 39 (7 ULg)
Full Text
Peer Reviewed
See detailSeasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed
Delille, Bruno ULg; Delille, D.; Fiala, M. et al

in Polar Biology (2000), 23(10), 706-716

The partial pressure of carbon dioxide (pCO(2)), calculated from pH and total alkalinity measurements. was monitored together with chlorophyll a and bacterioplankton biomass in shallow coastal water ... [more ▼]

The partial pressure of carbon dioxide (pCO(2)), calculated from pH and total alkalinity measurements. was monitored together with chlorophyll a and bacterioplankton biomass in shallow coastal water located inside and outside a giant kelp bed (Macrocystis pyrifera) situated in the Kerguelen Archipelago, Southern Ocean. In spite of large changes over a short time-scale pCO(2) variations over the year are large and exhibit a seasonal pattern in which the different stages of the annual biological turnover are well marked. The overall pattern of pCO(2) variations is related to biological activity (development of both photosynthesis and respiration) during almost the whole year. However, physical and thermodynamical constraints exert a strong influence on pCO(2) at meso time-scale (10 days) and/or when biological activity is weak. Macrocystis acts to maintain pCO(2) below saturation almost the whole year and large undersaturations (pCO(2) as low as 20 mu atm) were observed within the kelp bed. Furthermore, primary production of Macrocystis covers a period of 8 similar to 9 months a year from winter to late summer and the kelp bed seems to favour the spring phytoplanktonic bloom. The buffer factor beta indicates that, outside the kelp bed, inorganic carbon dynamics are mainly influenced by air-sea exchange and photosynthesis without calcification. Inside the kelp bed. beta suggests calcification by the epiphytic community. [less ▲]

Detailed reference viewed: 21 (5 ULg)
Full Text
Peer Reviewed
See detailTranslocation Properties Of Novel Cell Penetrating Transportan And Penetratin Analogues
Lindgren, M.; Gallet, X.; Soomets, U. et al

in Bioconjugate Chemistry (2000), 11(5), 619-26

Novel analogues of the cell-penetrating peptides penetratin and transportan were synthesized. The distribution of the biotin-labeled peptides in Bowes melanoma cell line has been investigated by indirect ... [more ▼]

Novel analogues of the cell-penetrating peptides penetratin and transportan were synthesized. The distribution of the biotin-labeled peptides in Bowes melanoma cell line has been investigated by indirect fluorescence with fluorescein-streptavidin detection. The time course of uptake of (125)I-labeled transportan analogues has been characterized in the same cell line. Molecular modeling was used to analyze the penetration and the orientation of molecules in a simulated biological membrane. The results, both from molecular modeling and fluorescence studies, imply that penetratin and transportan do not enter the cells by related mechanisms and that they do not belong to the same family of translocating peptides. [less ▲]

Detailed reference viewed: 18 (0 ULg)
Full Text
Peer Reviewed
See detailSmoking during adolescence
Paulus, Dominique; Saint-Remy, Annie ULg; JeanJean, Michel

in European Journal of Public Health (2000), 10(1), 39-44

Background: The objective of the presnt study was firstly to collect data on smoking in adolescents from a high cardiovascular risk population and, secondly, to analyse the association between smoking and ... [more ▼]

Background: The objective of the presnt study was firstly to collect data on smoking in adolescents from a high cardiovascular risk population and, secondly, to analyse the association between smoking and other cardiovascular risk factors. Methods: A cross-sectional study was conducted in 1,526 adolescents (12-17 years) in 24 secondary schools of the Belgian province of Luxembourg. Data collection included smoking,physical activity habits, blood pressure, total cholesterol, anthropometry, diet (e.g. alcohol consumption) and oral contraceptive use. Results: Te prevalences of current and occasional smokers were 14.8 and 5.4% respectively, with similar proportions in both genders. The proportion of smokers was significantly higher in the technical course than in the classical one (35.6 versus 24% in the 15-17 years age goup). In the 15-17 year old group, regular smokers consumed significantly more free sugar, alcohol, coffee and soft drinks and male smokers ate less fruit and vegetble than non-smokers. In the same age group, 32.6% of female smokers were oral contraceptive users versus 17.9% in the non-smokers group. Other cardiovascular risk factors were similar in regular smokers and non-smokers. Conclusion: Adolescent smoking is a cause for concern in this sample from a high cardiovascular risk population. Few links were found between the prior and other cardiovascular risk factors. However, the high prevalence of smoking in the technical course and its combined usage with oral contraceptives in teenagers deserve careful attention. [less ▲]

Detailed reference viewed: 11 (3 ULg)
Peer Reviewed
See detailDielectronic structure of 2l-1s Transitions of Multicharged Ions of Argon with nuclear charges Z = 10 - 17
Biémont, Emile ULg; Quinet, Pascal ULg; Faenov, A.Ya et al

in Physica Scripta (2000), 61

Detailed reference viewed: 10 (2 ULg)
Full Text
Peer Reviewed
See detailComparison of the effects of nimesulide and nimesulide-L-lysine on PGE2 production by COX-1 and COX-2 and on chondrocyte metabolism in vitro
De Leval, X.; Henrotin, Y.; Labasse, A. et al

in Pharmacy and Pharmacology Communications (2000), 6

Detailed reference viewed: 7 (2 ULg)
See detailDes obligations de l’usufruitier et du nu-propriétaire face aux charges de la copropriété forcée d’immeubles bâtis
Lecocq, Pascale ULg

in Journal des Juges de Paix = Tijdschrift van de Vrederecters (2000)

Detailed reference viewed: 194 (8 ULg)
Peer Reviewed
See detailDynamics of total lipids and fatty acids during embryogenesis and larval developpement of Eurasian perch (Perca fluviatlis)
Abi-Ayad, Amine; Kestemont, P.; Mélard, Charles ULg

in Fish Physiology and Biochemistry (2000), 23

Detailed reference viewed: 19 (2 ULg)
Full Text
Peer Reviewed
See detailNuclear imaging methods for non-invasive drug monitoring.
Bhatnagar, A.; Hustinx, Roland ULg; Alavi, A.

in Advanced Drug Delivery Reviews (2000), 41(1), 41-54

Functional imaging techniques provide complimentary information to that provided by structural studies such as MRI and CT. Functional imaging is based upon known parameters such as physiology, metabolism ... [more ▼]

Functional imaging techniques provide complimentary information to that provided by structural studies such as MRI and CT. Functional imaging is based upon known parameters such as physiology, metabolism, biochemistry, pharmacology, and any other biological process. As such, this methodology plays a major role in understanding the basic mechanisms of a multitude of disorders, accurate diagnosis of certain diseases, and developing effective treatment for serious illnesses such as cancer and central nervous system maladies. Although this type of imaging can be performed with various modalities, nuclear procedures have played the leading role in this discipline. Advances made in labeling various radionuclides to biologically important compounds, and development of sophisticated instruments have substantially contributed to the growth of the field of functional imaging. The introduction of positron emission topography (PET), which is based on imaging of compounds labeled with elements such as carbon, nitrogen, and fluorine, has added a major dimension to the evolution of the discipline. This review deals with a brief introduction to the methodologies utilized with radiolabeled tracers and then deals with specific applications of this technology. These applications include assessment of blood flow and metabolism, receptor imaging, elucidating the pathophysiologic process, evaluating role of labeled therapeutic agents, and the potential of these techniques in the development of novel biologic therapies. Functional imaging with radiolabeled tracers will play an increasingly important role in modern medicine, and its impact will be substantial in the management of patients with various disorders. [less ▲]

Detailed reference viewed: 21 (0 ULg)
Full Text
Peer Reviewed
See detailCharacterization of the Behaviour of a Simple Aeroservoelastic System with Control Nonlinearities
Dimitriadis, Grigorios ULg; Cooper, Jonathan E

in Journal of Fluids & Structures (2000), 14(8), 1173-1193

The characterization of the behaviour of nonlinear aeroelastic systems has become a very important research topic in the Aerospace Industry. However, most work carried to-date has concentrated upon ... [more ▼]

The characterization of the behaviour of nonlinear aeroelastic systems has become a very important research topic in the Aerospace Industry. However, most work carried to-date has concentrated upon systems containing structural or aerodynamic nonlinearities. The purpose of this paper is to study the stability of a simple aeroservoelastic system with nonlinearities in the control system and power control unit. The work considers both structural and control law nonlinearities and assesses the stability of the system response using bifurcation diagrams. It is shown that simple feedback systems designed to increase the stability of the linearized system also stabilize the nonlinear system, although their effects can be less pronounced. Additionally, a nonlinear control law designed to limit the control surface pitch response was found to increase the flutter speed considerably by forcing the system to undergo limit cycle oscillations instead of fluttering. Finally, friction was found to affect the damping of the system but not its stability, as long as the amplitude of the frictional force is low enough not to cause stoppages in the motion. [less ▲]

Detailed reference viewed: 20 (1 ULg)
Peer Reviewed
See detailStrong decays of the glueball in a scaled effective Lagrangian
Jaminon, Martine ULg; Mathot, Michel ULg; Van den Bossche, Bruno

in Nuclear Physics A (2000), 662

We calculate the scalar glueball decays into pipi, etaeta, etaeta' and KK within a modified version of the NJL model which implements the QCD trace anomaly. The glueball is assumed to be the f0(1500). It ... [more ▼]

We calculate the scalar glueball decays into pipi, etaeta, etaeta' and KK within a modified version of the NJL model which implements the QCD trace anomaly. The glueball is assumed to be the f0(1500). It is coupled to the quarks due to its mixing with the scalar isoscalar mesons. The decay widths then contain a contribution coming from the triangle Feynman diagram. Moreover, they contain two additional contributions corresponding to the local decay of the glue component of the f0(1500): one comes from the process of regularization of the quark loop, the other from the interaction term a2chi2phgr2. Except for the etaeta' case, this local decay reduces the value of the width. The axial anomaly is introduced via a mass term for the eta'. As far as the lightest scalar glueball is identified with the f0(1500), the model cannot reproduce at the same time the dynamical properties of scalars and pseudoscalars. Since we do not include a model of confinement, we need to use a large quark mass (725 MeV) in our calculations. This leads to unphysical results for the two-pion decay width. A definitive test of our model awaits the introduction of a model of confinement, which we hope to include in a future work. [less ▲]

Detailed reference viewed: 26 (3 ULg)
Peer Reviewed
See detailLa prescription de l'action publique
Jacobs, Ann ULg

in Journal des Tribunaux (2000)

Detailed reference viewed: 41 (2 ULg)
Full Text
See detailQue pense l’élève de la leçon qu’il vient de vivre ?
Piéron, Maurice ULg; Delfosse, Catherine; Ledent, Maryse et al

in Revue de l'Education Physique (2000), 40(3), 119-129

S'intéresser aux avis des acteurs de la relation pédagogique sur ce qu'ils vivent en classe représente une démarche particulièrement utile pour mieux apprécier la signification des comportements qu'ils ... [more ▼]

S'intéresser aux avis des acteurs de la relation pédagogique sur ce qu'ils vivent en classe représente une démarche particulièrement utile pour mieux apprécier la signification des comportements qu'ils ont adoptés. Il est clair qu'à l'issue d'une leçon d'éducation physique, il est hautement souhaitable que les élèves éprouvent autant de satisfaction que possible. Une estimation globale de satisfaction doit être complétée de perceptions plus spécifiques relatives à l'intensité de la leçon, aux sentiments de compétence en relation avec ce qui fut réalisé, aux corrections reçues, au progrès réalisé, au sentiment de s'être donné à fond, de s'être amusé et d'avoir prêté attention aux interventions de l'enseignant. [less ▲]

Detailed reference viewed: 152 (2 ULg)
Full Text
Peer Reviewed
See detailPart 9: Shrinkage for service and accident conditions
Schneider, Ulrich; Schwesinger, P.; Debicki, Gérard et al

in Materials and Structures (2000), 33

Detailed reference viewed: 17 (0 ULg)
Full Text
Peer Reviewed
See detailValidation and Prognostic Value of Plasma Lactate Measurement in Bovine Respiratory Disease
Coghe, Joost; Uystepruyst, Christophe; Bureau, Fabrice ULg et al

in Veterinary Journal (2000), 160(2), 139-146

The purpose of this study was to evaluate the accuracy of a portable blood lactate analyser for bovine blood and to study the relevance of plasma lactate concentration in the prognosis of bovine pulmonary ... [more ▼]

The purpose of this study was to evaluate the accuracy of a portable blood lactate analyser for bovine blood and to study the relevance of plasma lactate concentration in the prognosis of bovine pulmonary disorders.Measurements with the portable analyser were highly correlated (R = 0.94, P<0.0001) with the measurements of the reference method but significantly different (P<0.0001). The portable apparatus slightly overestimated plasma lactate concentration compared to the reference method (bias = + 0.412). Plasma lactate measurements on 109 calves suffering from acute bronchopneumonia showed increasing lactate concentrations with severity of the disease. A plasma lactate concentration higher than 3.6 mmol/L or 4 mmol/L, measured with the reference method and the portable analyser respectively, appeared to be a reliable prognostic indicator for mortality within 24 h. Consequently, this measurement could be very helpful to decrease economic losses in cases of bovine respiratory disease, by avoiding unnecessary treatment costs on cattle with poor prognosis. [less ▲]

Detailed reference viewed: 45 (3 ULg)
Peer Reviewed
See detailReduced Sperm Counts In Guppies (Poecilia Reticulata) Following Exposure To Low Levels Of Tributyltin And Bisphenol A
Haubruge, Eric ULg; Petit, François ULg; Gage, Mjg.

in Proceedings of the Royal Society B-Biological Sciences (2000), 267(1459),

Detailed reference viewed: 37 (14 ULg)
Peer Reviewed
See detailLe champ des études migratoires et ethniques en Belgique
Martiniello, Marco ULg

in La Revue Générale (2000), 135(10), 19-28

Detailed reference viewed: 19 (2 ULg)
Full Text
Peer Reviewed
See detailBoundedness properties for time-varying nonlinear systems
Peuteman, Joan; Aeyels, Dirk; Sepulchre, Rodolphe ULg

in SIAM Journal on Control & Optimization (2000), 39(5), 1408-1422

Detailed reference viewed: 10 (1 ULg)
Peer Reviewed
See detailL'immigrazione italiana in Belgio
Martiniello, Marco ULg

in I Viaggi di Erodoto (2000), 40

Detailed reference viewed: 49 (11 ULg)
Peer Reviewed
See detailEvidence of nutriceutical effectiveness in the treatment of osteoarthritis
Reginster, Jean-Yves ULg; Gillot, Vincent; Bruyère, Olivier ULg et al

in Current Rheumatology Reports (2000), 2(6), 472-477

Detailed reference viewed: 12 (4 ULg)
Full Text
Peer Reviewed
See detailThe Topology Of Lysine-Containing Amphipathic Peptides In Bilayers By Circular Dichroism, Solid-State Nmr, And Molecular Modeling
Vogt, B.; Ducarme, P.; Schinzel, S. et al

in Biophysical Journal (2000), 79(5), 2644-56

In order to better understand the driving forces that determine the alignment of amphipathic helical polypeptides with respect to the surface of phospholipid bilayers, lysine-containing peptide sequences ... [more ▼]

In order to better understand the driving forces that determine the alignment of amphipathic helical polypeptides with respect to the surface of phospholipid bilayers, lysine-containing peptide sequences were designed, prepared by solid-phase chemical synthesis, and reconstituted into membranes. CD spectroscopy indicates that all peptides exhibit a high degree of helicity in the presence of SDS micelles or POPC small unilamellar vesicles. Proton-decoupled (31)P-NMR solid-state NMR spectroscopy demonstrates that in the presence of peptides liquid crystalline phosphatidylcholine membranes orient well along glass surfaces. Thenorientational distribution and dynamics of peptides labeled with (15)N at selected sites were investigated by proton-decoupled (15)N solid-state NMR spectroscopy. Polypeptides with a single lysine residue adopt a transmembrane orientation, thereby locating this polar amino acid within the core region of the bilayer. In contrast, peptides with > or = 3 lysines reside along the surface of the membrane. With 2 lysines in the center of an otherwise hydrophobic amino acid sequence the peptides assume a broad orientational distribution. The energy of lysine discharge, hydrophobic, polar, and all other interactions are estimated to quantitatively describe the polypeptide topologies observed. Furthermore, a molecular modeling algorithm based on the hydrophobicities of atoms in a continuous hydrophilic-hydrophobic-hydrophilic potential describes the experimentally observed peptide topologies well. [less ▲]

Detailed reference viewed: 21 (0 ULg)
Peer Reviewed
See detailSerotonergic-1a activity and contingent negative variation.
Hansenne, Michel ULg; Pitchot, William ULg; Pinto, Emmanuel ULg et al

in Biological Psychology (2000), 52(3), 259-65

While cholinergic, dopaminergic, noradrenergic, and gabaergic effects on contingent negative variation (CNV) have been largely described, little is known about serotonergic influence. Therefore, the ... [more ▼]

While cholinergic, dopaminergic, noradrenergic, and gabaergic effects on contingent negative variation (CNV) have been largely described, little is known about serotonergic influence. Therefore, the relationship between CNV and serotonergic activity as reflected by prolactin (PRL) response to flesinoxan, a 5-HT(1A) full agonist, has been investigated in 28 healthy volunteers. To investigate the clinical implications of the relationship between CNV and serotonergic-1a activity, a group of 43 depressed patients was included in the study. Results among healthy volunteers showed a significant negative relationship between PRL response to flesinoxan and CNV amplitude at Fz, but no relationship for the other electrodes (Cz and Pz). In depressed patients, the relationships were not significant. Overall, this study does not support serotonergic effects on CNV. However, this information is indirect (correlations) and is limited to 5-HT(1A) activity. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Peer Reviewed
See detailActualites therapeutiques 2000.
Scheen, André ULg

in Revue Médicale de Liège (2000), 55(9), 852-61

The most important drugs registered and/or launched in Belgium during the last year in the various disciplines of internal medicine will be briefly described. The originality of each molecule as well as ... [more ▼]

The most important drugs registered and/or launched in Belgium during the last year in the various disciplines of internal medicine will be briefly described. The originality of each molecule as well as its modalities of appropriate use in clinical practice will be emphasized. [less ▲]

Detailed reference viewed: 22 (0 ULg)
Full Text
Peer Reviewed
See detailNew strictosidine beta-glucosidase from Strychnos mellodora
Brandt, Viviane; Geerlings, Arjan; Tits, Monique ULg et al

in Plant Physiology & Biochemistry (2000), 38(3), 187-192

A stable strictosidine glucosidase was isolated from dried powdered material of Strychnos mellodora. The kinetic parameters Km and Vmax of the purified glucosidases from catharanthus roseus and S ... [more ▼]

A stable strictosidine glucosidase was isolated from dried powdered material of Strychnos mellodora. The kinetic parameters Km and Vmax of the purified glucosidases from catharanthus roseus and S. mellodora towards strictosidine, dolichantoside and palicoside were determined and compared. [less ▲]

Detailed reference viewed: 38 (2 ULg)
Peer Reviewed
See detailP300 event-related brain potential and personality in depression.
Hansenne, Michel ULg; Pitchot, William ULg; Pinto, Emmanuel ULg et al

in European Psychiatry (2000), 15(6), 370-7

P300 is an event-related brain potential (ERP) particularly interesting to the study of cognitive processes in normal subjects and in psychopathology. P300 has been applied in depression with ... [more ▼]

P300 is an event-related brain potential (ERP) particularly interesting to the study of cognitive processes in normal subjects and in psychopathology. P300 has been applied in depression with controversial results. A major source for these controversial results could result from the diversity of depressed patients included in the different studies. Supporting this assumption, impulsivity, blunted affect, suicidal behavior and psychotic features significantly influence P300 amplitude. However, no data are available on the possible influences of the personality of depressed patients on P300. Since personality is related to P300 in normal subjects, the aim of the present study is to investigate the relationship between ERPs (P200, N200, and P300) and the Temperament and Character Inventory (TCI) in 54 depressed patients. The main results of the study concern the absence of major correlations between personality dimensions as assessed by the TCI and ERP parameters among depressed patients. Only weak partial positive correlations relate N200 latency with harm avoidance, and P300 amplitude (Pz) with the self-directedness dimension. N200 amplitude is also negatively correlated to persistence. However, the preliminary nature of the presented results with respect to the weak statistical significance should be underlined. [less ▲]

Detailed reference viewed: 53 (1 ULg)
Peer Reviewed
See detailIdentification of animals treated with bovine somatotropin : a new non-isotopic detection system for bST
Baronheid, Christophe; Bertozzi, Carlo; Renaville, Robert ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2000), 4

Detailed reference viewed: 22 (0 ULg)
Full Text
Peer Reviewed
See detailPharma clinics. Comment je traite ... un trouble de la kaliémie
Neven, Ingrid; Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2000), 55(1), 4-7

The treatment of dyskalemia must be primarily etiological and later symptomatic. When moderate but significant hypokalemia exists (K < 3 mmol/l or 3.5 mmol/l with cardiac disease), oral K supplements must ... [more ▼]

The treatment of dyskalemia must be primarily etiological and later symptomatic. When moderate but significant hypokalemia exists (K < 3 mmol/l or 3.5 mmol/l with cardiac disease), oral K supplements must be given. The intravenous route must be reserved for emergency or impossible oral administration. Acute and severe hyperkalemia (K > 7 mmol/l) must be first corrected by different intravenous measures with secondary oral intervention. In chronic and/or moderate hyperkalemia (K > 5.5 mmol/l), the oral route for treatment is prefered. In any case, the research of the cause (mainly drug induced) is fundamental. [less ▲]

Detailed reference viewed: 196 (15 ULg)
Peer Reviewed
See detailLes recommandations du Belgian Lipid Club pour le diagnostic et le traitement des hyperlipidemies: resume pour le praticien.
Ducobu, J.; Scheen, André ULg

in Revue Médicale de Liège (2000), 55(5), 360-6

The present paper summarizes the last recommendations of the Belgian Lipid Club for the diagnosis and treatment of hyperlipidaemias which were published in 1999. These guidelines are in agreement with the ... [more ▼]

The present paper summarizes the last recommendations of the Belgian Lipid Club for the diagnosis and treatment of hyperlipidaemias which were published in 1999. These guidelines are in agreement with the "Recommendations of the second Task Force of European and other societies on Coronary Protection", published in 1998. We will briefly describe the evidence supporting the treatment of dyslipidaemias, especially hypercholesterolaemia, to improve coronary prognosis of at high risk subjects as well as the general strategies, lipid objectives and therapeutic means, in a practical way for the clinician. [less ▲]

Detailed reference viewed: 339 (3 ULg)
Full Text
Peer Reviewed
See detailTaurine and ethanol preference : a microdialysis study using Sardinian alcohol-preferring and non-preferring rats
Quertemont, Etienne ULg; Lallemand, Frédéric; Colombo, Giancarlo et al

in European Neuropsychopharmacology (2000), 10

Recent intracerebral microdialysis studies of different rat brain regions have shown that an acute ethanol injection induced a rapid dose-dependent increase in taurine microdialysate content during the ... [more ▼]

Recent intracerebral microdialysis studies of different rat brain regions have shown that an acute ethanol injection induced a rapid dose-dependent increase in taurine microdialysate content during the first 60-min period. In taurine-supplemented rats, a reduced aversion for high ethanol doses was observed in a place conditioning paradigm, suggesting that taurine may be implicated in the regulation of some adverse effects of ethanol. The present study compares the effects of acute ethanol injections (1.0 and 2.0 g/ kg, i.p.) on taurine nucleus accumbens microdialysate content in Sardinian ethanol-preferring (sP) and Sardinian ethanol-non preferring (sNP) rats. While neither saline nor 1.0 g/kg ethanol injections had significant effect on taurine microdialysate concentration, 2.0 g/kg ethanol administration induced a rapid and significant increase in taurine microdialysate content in both sP and sNP rats. However, this ethanol-induced taurine release was significantly reduced in sP rats by comparison to sNP rats. As taurine is suggested to be released by brain cells to modulate different ethanol adverse effects, this lower taurine responsiveness to ethanol in sP rats by comparison to both sNP and Wistar rats may be a relevant indicator of reduced ethanol aversive effects in such animals and therefore be related to their higher alcohol consumption. [less ▲]

Detailed reference viewed: 18 (1 ULg)
Full Text
Peer Reviewed
See detailDéveloppement durable et organisation urbaine : le mot dʼordre de la ville compacte
Halleux, Jean-Marie ULg

in Cahiers de l'Urbanisme (Les) (2000), (30), 18-23

Detailed reference viewed: 99 (9 ULg)
See detailPour concevoir et déployer des dispositifs d'accompagnement d'équipes éducatives dans l'élaboration de pratiques collectives
Mouvet, Bernadette ULg; Lenoir, Anne-Sophie; Massart, Valérie ULg et al

in Point sur la Recherche en Education (Le) (2000), 17

Detailed reference viewed: 22 (6 ULg)
Full Text
Peer Reviewed
See detailDétermination des puissances spécifiques critiques dans des rivières à charge de fond caillouteuse
Petit, François ULg; Perpinien, G.; Deroanne, Claude ULg

in Revue Géographique de l'Est (2000)

Detailed reference viewed: 24 (4 ULg)
Full Text
See detailParticipation d'élèves de l'enseignement secondaire à des activités sportives extrascolaires. Comparaison selon leur niveau d'habileté
Piéron, Maurice ULg; Ledent, Maryse ULg; Delfosse, Catherine ULg et al

in Revue de l'Education Physique (2000), 40(2), 61-72

Les auteurs font partie du service de Pédagogie des activités physiques et sportives de l’Université de Liège. Ils ont effectué une étude portant sur le traitement différencié des élèves par les ... [more ▼]

Les auteurs font partie du service de Pédagogie des activités physiques et sportives de l’Université de Liège. Ils ont effectué une étude portant sur le traitement différencié des élèves par les enseignements en éducation physique, subventionnée par la Communauté française de Belgique, Administration de l’Enseignement et de la Recherche Scientifique. [less ▲]

Detailed reference viewed: 132 (4 ULg)
Full Text
Peer Reviewed
See detailThermal unfolding of an intermediate is associated with non-arrhenius kinetics in the folding of hen lysozyme
Matagne, André ULg; Jamin, M.; Chung, E. W. et al

in Journal of Molecular Biology (2000), 297(1), 193-210

A variety of techniques, including quenched-flow hydrogen exchange labelling monitored by electrospray ionization mass spectrometry, and stopped-flow absorbance, fluorescence and circular dichroism ... [more ▼]

A variety of techniques, including quenched-flow hydrogen exchange labelling monitored by electrospray ionization mass spectrometry, and stopped-flow absorbance, fluorescence and circular dichroism spectroscopy, has been used to investigate the refolding kinetics of hen lysozyme over a temperature range from 2 degrees C to 50 degrees C. Simple Arrhenius behaviour is not observed, and although the overall rate of folding increases from 2 to 40 degrees C, it decreases above 40 degrees C. In addition, the transient intermediate on the major folding pathway at 20 degrees C, in which the alpha-domain is persistently structured in the absence of a stable beta-domain, is thermally unfolded in a sigmoidal transition (T-m approximate to 40 degrees C) indicative of a cooperatively folded state. At all temperatures, however, there is evidence for fast (similar to 25%) and slow (similar to 75%) populations of refolding molecules. By using transition state theory, the kinetic data from various experiments were jointly fitted to a sequential three-state model for the slow folding pathway. Together with previous findings, these results indicate that the alpha-domain intermediate is a productive species on the folding route between the denatured and native states, and which accumulates as a consequence of its intrinsic stability. Our analysis suggests that the temperature dependence of the rate constant for lysozyme folding depends on both the total change in the heat capacity between the ground and transition states (the dominant factor at low temperatures) and the heat-induced destabilization of the alpha-domain intermediate (the dominant factor at high temperatures). Destablization of such kinetically competent intermediate species is Likely to be a determining factor in the non-Arrhenius temperature dependence of the folding rate of those proteins for which one or more intermediates are populated. (C) 2000 Academic Press. [less ▲]

Detailed reference viewed: 21 (2 ULg)
Peer Reviewed
See detailBegian guidelines concerning drug induced alteration of coagulation and central neuraxial anesthesia
Brichant, Jean-François ULg; De Kock, Marc; De Mey, J. C. et al

in Acta Anaesthesiologica Belgica (2000), 51

Detailed reference viewed: 17 (0 ULg)
Full Text
Peer Reviewed
See detailPAM, sediments, and interrupted flow effects on rill erosion and Intake rate
Sirjacobs, Damien ULg; Shainberg, Itzhak; Rapp, Iddo et al

in Soil Science Society of America Journal (2000), 64

The reduction in the intake rate (IR) during interrupted irrigation is difficult to predict. Sediments in irrigation water decrease the effect of interrupted irrigation on IR. Polyacrylamide (PAM) reduces ... [more ▼]

The reduction in the intake rate (IR) during interrupted irrigation is difficult to predict. Sediments in irrigation water decrease the effect of interrupted irrigation on IR. Polyacrylamide (PAM) reduces rill erosion, but its effect on IR is controversial. The effects of water quality (tap water, tap water containing sediments, and 10 g m−3 PAM solution) and interrupted flow on IR and rill erosion in an Alfisol (Calcic Haploxeralf) and a Vertisol (Typic Chromoxerert) were studied using laboratory miniflumes. Rill erosion in both soils was eliminated by the PAM treatment in both continuous and interrupted flow. The PAM application reduced IR in the Alfisol and increased it in the Vertisol. In the Alfisol, interrupted flow reduced IR of the PAM solution by 37% compared with only 18% for tap water. In the Vertisol, interrupted flow reduced IR only slightly and the decrease was not affected by the polymer. When the water contained sediments, cumulative infiltration was reduced by 22% for the Vertisol and 59% for the Alfisol in comparison with tap water. These reductions were attributed to depositional seal formation. The IR of the Alfisol was more susceptible to depositional seal formation than the Vertisol. The presence of sediments in water was effective in reducing rill erosion. The effects of interrupted flow with PAM on reducing IR were explained by partial blocking of the conducting pores leading to greater suction and compaction of the soil surface. For sediment-laden irrigation water, interrupted flow had no advantage over continuous flow in reducing IR because of depositional seal formation associated with the sediments in the water. [less ▲]

Detailed reference viewed: 45 (4 ULg)
Full Text
Peer Reviewed
See detailThe cerebral protective effect of anaesthetics
HANS, Pol; BONHOMME, Vincent ULg

in Current Anaesthesia and Critical Care (2000), 11

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailStress-induced premature senescence. Essence of life, evolution, stress, and aging.
Toussain, O.; Dumont, P.; Dierick, J.-F. et al

in Annals of the New York Academy of Sciences (2000), 908

Detailed reference viewed: 12 (1 ULg)
Peer Reviewed
See detailUse of ciliogenesis in the diagnosis of primary ciliary dyskinesia in a dog
Clercx, Cécile ULg; Peeters, Dominique ULg; Beths, T. et al

in Journal of the American Veterinary Medical Association [=JAVMA] (2000), 11

Primary ciliary dyskinesia is a congenital condition that may cause chronic rhinitis and bronchopneumonia. Primary ciliary dyskinesia may be diagnosed by induction of ciliogenesis by use of in vitro cell ... [more ▼]

Primary ciliary dyskinesia is a congenital condition that may cause chronic rhinitis and bronchopneumonia. Primary ciliary dyskinesia may be diagnosed by induction of ciliogenesis by use of in vitro cell culture. Induction of ciliogenesis allows for differentiation between primary and secondary ciliary dyskinesia. [less ▲]

Detailed reference viewed: 9 (1 ULg)
Full Text
Peer Reviewed
See detailCyanures et thiocyanates en toxicologie hospitalière
Charlier, Corinne ULg; Gougnard, Th; Lamiable, D. et al

in Annales de Toxicologie Analytique (2000), XII(2), 131-136

Cyanide is a highly toxic poison, able to very rapidly induce the death. Thiocyanate anion (SCN-) is a metabolic product of cyanide and cyano-containing organic substances, produced by two major enzymes ... [more ▼]

Cyanide is a highly toxic poison, able to very rapidly induce the death. Thiocyanate anion (SCN-) is a metabolic product of cyanide and cyano-containing organic substances, produced by two major enzymes : thiosulfate sulfure transferase and β mercaptopyruvate transsulfurase. Determinations of blood cyanide is important to confirm the diagnostic of intoxication. A survey of methods for the quantitative determination of cyanide and thiocyanate in biological matrices is presented. Particular attention is paid to the rapidity and to the sensitivity of the method. [less ▲]

Detailed reference viewed: 14 (5 ULg)
Full Text
Peer Reviewed
See detailPET scanning and neuronal loss in acute vegetative state
Laureys, Steven ULg; Faymonville, Marie ULg; Moonen, Gustave ULg et al

in Lancet (2000), 355(9217), 1825-1826

Detailed reference viewed: 20 (2 ULg)
Peer Reviewed
See detailComparison of visual and auditory evoked cortical potentials in migraine patients between attacks.
Afra, J.; Proietti Cecchini, A.; Sandor, P. S. et al

in Clinical Neurophysiology (2000), 111(6), 1124-9

OBJECTIVE: As both habituation of pattern reversal visual evoked potentials (PR-VEP) (Schoenen J, Wang W, Albert A, Delwaide PJ. Potentiation instead of habituation characterizes visual evoked potentials ... [more ▼]

OBJECTIVE: As both habituation of pattern reversal visual evoked potentials (PR-VEP) (Schoenen J, Wang W, Albert A, Delwaide PJ. Potentiation instead of habituation characterizes visual evoked potentials in migraine patients between attacks. Eur J Neurol 1995;2:115-122) and intensity dependence of auditory evoked cortical potentials (IDAP) (Wang W, Timsit-Berthier M, Schoenen J. Intensity dependence of auditory evoked potentials in migraine: an indication of cortical potentiation and low serotonergic neurotransmission? Neurology 1996;46:1404-1409) were found abnormal in migraine between attacks, we have searched for intraindividual correlations between both tests in 59 migraine patients (22 with aura [MA], 37 without aura [MO]) and in 23 healthy volunteers (HV). METHODS: Amplitude change of the PR-VEP N1-P1 was measured between the 1st and 5th block of 50 sequential averagings during continuous stimulation at 3.1 Hz. IDAP was computed from N1-P2 amplitudes of 100 averagings during stimulations at 40, 50, 60 and 70 dB SL. Amplitude-stimulus intensity function (ASF) slopes and amplitude changes between 40 and 70 dB were calculated. MO and MA differed from HV in PR-VEP amplitude change (P=0.007) and IDAP slope (P = 0.0004). RESULTS: There was no significant correlation between VEP amplitude changes and IDAP slopes, nor between the latter two and attack frequency or disease duration. A negative correlation was found between the amplitude of the first block of averaged responses and potentiation of VEP in all subject groups (P = 0.03) as well as between the amplitude of the auditory evoked potential, at 40 dB, and the percentage of amplitude increase between 40 and 70 dB in MO (P = 0.004) and MA (P = 0.007). ASF slopes and 40 dB amplitudes were significantly correlated only in the MA group (P = 0.002). These results confirm the interictal deficit of habituation in cortical processing of repetitive visual and auditory information in migraine. Since there is no intraindividual correlation between the cortical responses to these sensory modalities they are complementary tools for the study of migraine and may help to identify subgroups of patients with distinct pathophysiological mechanisms. CONCLUSIONS: The strong negative correlation between the initial amplitude of evoked potentials and their amplitude increase during subsequent averaging confirms that the response potentiation in migraine is likely to be due to a reduced preactivation level of sensory cortices. [less ▲]

Detailed reference viewed: 46 (1 ULg)
Full Text
Peer Reviewed
See detailConstruire l'esprit du dauphin
Servais, Véronique ULg

in Terrain (2000), 34

Comparisons are made of how the dolphin’s “mind” is “constructed” in six interactional contexts distinguished by the degree of participation (in the ethnological sense of the term) by human beings or even ... [more ▼]

Comparisons are made of how the dolphin’s “mind” is “constructed” in six interactional contexts distinguished by the degree of participation (in the ethnological sense of the term) by human beings or even by the dolphins themselves: the study of the brain, the study of sensorial capabilities, research on cognition, naturalistic observations, communication among dolphins, and meetings on the high sea. On the basis of these comparisons, it is argued that whether or not people attribute a “mind” to the dolphin very much depends on the degree of likeness that they recognize with these animals, which, in turn, depends on the person’s capacity to let himself be “affected” by them. [less ▲]

Detailed reference viewed: 123 (5 ULg)
Full Text
Peer Reviewed
See detailGonadal cryopreservation in the young patient with gynaecological malignancy.
Donnez, Jacques; GODIN, Pierre-Arnaud ULg; Qu, Jianping et al

in Current Opinion in Obstetrics & Gynecology (2000), 12(1), 1-9

For patients who are planning to have chemotherapy, radiotherapy or to undergo bilateral oophorectomy, the loss of ovarian function will result in premature ovarian menopause and loss of fertility. Embryo ... [more ▼]

For patients who are planning to have chemotherapy, radiotherapy or to undergo bilateral oophorectomy, the loss of ovarian function will result in premature ovarian menopause and loss of fertility. Embryo preservation is not an option for single women or married women because delaying treatment for at least 2 months of in-vitro fertilization cycles is inappropriate and may be life-threatening. This study reports on the indications for ovarian tissue cryobanking and the state of the art of this method in preserving fertility in women with iatrogenic premature menopause. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Peer Reviewed
See detailDeveloppement et utilisation d'un systeme de telemedecine pour le suivi medical des patients diabetiques.
Ordonez, A. J.; Rodriguez-Castro, C.; Zamora, J. et al

in Journées Annuelles de Diabetologie de l'Hôtel-Dieu (2000)

Detailed reference viewed: 61 (0 ULg)
Peer Reviewed
See detailBauhinia L. in the Philippine Islands: aspects of diversity and vegetation units
Ruelle, S.; Malaisse, François ULg

in Geo-Eco-Trop (2000), 23(1-4), 49-62

Detailed reference viewed: 19 (0 ULg)
Full Text
Peer Reviewed
See detailA FETD Approach for the Modeling of Antennas
Geuzaine, Christophe ULg; Meys, B.; Beauvois, Véronique ULg et al

in IEEE Transactions on Magnetics (2000), 36(4), 892--896

Detailed reference viewed: 35 (3 ULg)
Full Text
Peer Reviewed
See detailManagement of central isosexual precocity: diagnosis, treatment, outcome.
LEBRETHON, Marie-Christine ULg; Bourguignon, Jean-Pierre ULg

in Current opinion in pediatrics (2000), 12(4), 394-9

The diagnosis of central isosexual precocity, a condition much more common in girls than in boys, is currently viewed as a spectrum of disorders between isolated premature thelarche and borderline early ... [more ▼]

The diagnosis of central isosexual precocity, a condition much more common in girls than in boys, is currently viewed as a spectrum of disorders between isolated premature thelarche and borderline early puberty. In some countries, a trend may be seen toward onset of puberty at earlier ages. Integration of the clinical findings with bone age, pelvic echography, and hormonal data as well as follow-up ascertainment of progression of development is critical to define which patients should be proposed for therapy. The use of long-acting forms of gonadotropin-releasing hormone (GnRH) agonists may not be indicated in slowly progressive variants or borderline early puberty because they do not affect final height. Preservation of height potential is particularly obvious in precocious puberty starting at young ages. In some selected patients, associated growth hormone therapy may increase adult height but further studies are warranted. The psychosocial and behavioral correlates of precocious puberty are an important and under investigated area. [less ▲]

Detailed reference viewed: 10 (0 ULg)
Full Text
Peer Reviewed
See detailStudy of the Virulence of Five Strains of Amyxomatous Myxoma Virus in Crossbred New Zealand White/Californian Conventional Rabbits, with Evidence of Long-Term Testicular Infection in Recovered Animals
Marlier, Didier ULg; Mainil, Jacques ULg; Sulon, Joseph ULg et al

in Journal of Comparative Pathology (2000), 122(2-3, Feb-Apr), 101-13

The virulence of five amyxomatous myxoma virus (MV) strains, the clinical and pathogenetic effects of which had been studied previously in specific pathogen-free (SPF) rabbits, was determined by ... [more ▼]

The virulence of five amyxomatous myxoma virus (MV) strains, the clinical and pathogenetic effects of which had been studied previously in specific pathogen-free (SPF) rabbits, was determined by inoculation of five groups of 10 crossbred New Zealand White/Californian conventional rabbits. A much more acute myxomatosis syndrome was produced in conventional rabbits than that reproduced previously in SPF animals. However, the main clinical signs were of the respiratory type. The MV strains MYX 254/95 and 801 appeared very virulent, killing all the inoculated animals. The strains MYX 217/95, MYX 555/94 and Saint Benoist were somewhat attenuated, killing only seven, six and six rabbits, respectively. Extensive lung lesions due to supervening bacterial infections were observed in 36 of the 39 rabbits that died. Lethality was found to be a better estimate of virulence than mean survival time. By 98 days after viral inoculation, all the surviving animals had completely recovered. At that time, they were immunosuppressed by treatment with adrenocorticotrophic hormone (ACTH) for 10 days to determine whether they still harboured the virus. After the ACTH treatment, eight of the 11 surviving rabbits showed clinical signs that resembled amyxomatous myxomatosis. All the virological examinations performed on naso-conjunctival exudate, on mononuclear cells, on eyelids and on ovaries remained negative but infectious virus was isolated from the testes of three of six surviving male rabbits. [less ▲]

Detailed reference viewed: 43 (10 ULg)
Full Text
Peer Reviewed
See detailA random matrix model for color superconductivity at zero chemical potential
Vanderheyden, Benoît ULg; Jackson, A. D.

in Physical Review. D : Particles and Fields (2000), 61(7), 076004

We discuss random matrix models for the spontaneous breaking of both chiral and color symmetries at zero chemical potential and finite temperature. Exploring different Lorentz and gauge symmetric color ... [more ▼]

We discuss random matrix models for the spontaneous breaking of both chiral and color symmetries at zero chemical potential and finite temperature. Exploring different Lorentz and gauge symmetric color structures of the random matrix interactions, we find that spontaneous chiral symmetry breaking is always thermodynamically preferred over diquark condensation. Stable diquark condensates appear only as SU(2) rotated chiral condensates, which do not represent an independent thermodynamic phase. Our analysis is based on general symmetry arguments and hence suggests that no stable and independent diquark phase can form in QCD with two flavors at zero quark chemical potential. [less ▲]

Detailed reference viewed: 15 (2 ULg)
Full Text
Peer Reviewed
See detailTrophics relationships between planktonic micro-organisms in the river Meuse (Belgium): a carbon budget
Servais, Pierre; Gosselain, Véronique; Joaquim-Justo, Célia ULg et al

in Arch. Hydrobiol (2000)

Detailed reference viewed: 7 (0 ULg)
Peer Reviewed
See detailOestrogenotherapie apres la menopause et protection cardio-vasculaire: discordance entre les observations epidemiologiques et les resultats d'essais therapeutiques.
Scheen, André ULg

in Revue Médicale de Liège (2000), 55(9), 886-8

Based upon the positive results of a large epidemiological study and the negative results of an interventional clinical trial recently published in the New England Journal of Medicine, we will briefly ... [more ▼]

Based upon the positive results of a large epidemiological study and the negative results of an interventional clinical trial recently published in the New England Journal of Medicine, we will briefly discuss the impact of estrogen replacement therapy on the protection against coronary heart disease in postmenopausal women. [less ▲]

Detailed reference viewed: 34 (1 ULg)
Full Text
Peer Reviewed
See detailNative gold, native silver, and secondary minerals in the quartz veins from Bastogne, Belgium
Hatert, Frédéric ULg; Deliens, Michel; Houssa, Michel et al

in Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre (2000), 70

Detailed reference viewed: 46 (10 ULg)
Peer Reviewed
See detailDexamethasone Ester Treatment Alters Insulin-Like Growth Factor-I, Its Binding Proteins And Thyroid Status In Finishing Calves
Bertozzi, C.; Portetelle, Daniel ULg; Massart, Serge et al

in Canadian Journal of Animal Science (2000), 80(2),

Detailed reference viewed: 22 (5 ULg)
Full Text
Peer Reviewed
See detailMatrix metalloproteinase-3 serum levels are correlated with disease activity and predict clinical response in rheumatoid arthritis
Ribbens, Clio ULg; Andre, Béatrice ULg; Jaspar, J. M. et al

in Journal of Rheumatology (2000), 120(1), 888-893

OBJECTIVE: To demonstrate that serum matrix metalloproteinase-3 (MMP-3) is a variable associated with disease activity and with the response to treatment in rheumatoid arthritis (RA). METHODS: Serum MMP-3 ... [more ▼]

OBJECTIVE: To demonstrate that serum matrix metalloproteinase-3 (MMP-3) is a variable associated with disease activity and with the response to treatment in rheumatoid arthritis (RA). METHODS: Serum MMP-3 levels were measured and compared to biological and clinical disease activity variables in 20 patients with active RA assessed serially during a one year prospective open label trial with methotrexate or tenidap. RESULTS: MMP-3 levels were significantly correlated with C-reactive protein (CRP) and interleukin 6 serum levels as well as with the disease activity score (DAS), not only at start in untreated patients but also during the 12 month followup period in both treated groups. Early changes (after 0.5, 1, 2, or 3 months) in MMP-3 levels were significantly associated with change in DAS observed 4 to 6 months later. CONCLUSION: In addition to CRP, a systemic marker of inflammation, serum MMP-3 may serve as a consistent synovial derived marker of RA disease activity, early changes of which predict disease outcome. [less ▲]

Detailed reference viewed: 12 (3 ULg)
Full Text
Peer Reviewed
See detailRestoration of thalamocortical connectivity after recovery from persistent vegetative state
Laureys, Steven ULg; Faymonville, Marie-Elisabeth ULg; Luxen, André ULg et al

in Lancet (2000), 355(9217), 1790-1791

Moreover, the performance on these factors is correlated to different anterior and posterior

Detailed reference viewed: 27 (3 ULg)
Peer Reviewed
See detailMajor histocompatibility complex class II expression by activated microglia caudal to lesions of descending tracts in the human spinal cord is not associated with a T cell response.
Schmitt, A. B.; Buss, A.; Breuer, S. et al

in Acta Neuropathologica (2000), 100(5), 528-36

Lesion-induced microglial/macrophage responses were investigated in post-mortem human spinal cord tissue of 20 patients who had died at a range of survival times after spinal trauma or brain infarction ... [more ▼]

Lesion-induced microglial/macrophage responses were investigated in post-mortem human spinal cord tissue of 20 patients who had died at a range of survival times after spinal trauma or brain infarction. Caudal to the spinal cord injury or brain infarction, a strong increase in the number of activated microglial cells was observed within the denervated intermediate grey matter and ventral horn of patients who died shortly after the insult (4-14 days). These cells were positive for the leucocyte common antigen (LCA) and for the major histocompatibility complex class II antigen (MHC II), with only a small proportion staining for the CD68 antigen. After longer survival times (1-4 months), MHC II-immunoreactivity (MHC II-IR) was clearly reduced in the grey matter but abundant in the white matter, specifically within the degenerating corticospinal tract, co-localising with CD68. In this fibre tract, elevated MHC II-IR and CD68-IR were still detectable 1 year after trauma or stroke. It is likely that the subsequent expression of CD68 on MHC II-positive microglia reflects the conversion to a macrophage phenotype, when cells are phagocytosing degenerating presynaptic terminals in grey matter target regions at early survival times and removing axonal and myelin debris in descending tracts at later survival times. No T or B cell invasion or involvement of co-stimulatory B7 molecules (CD80 and CD86) was observed. It is possible that the up-regulation of MHC II on microglia that lack the expression of B7 molecules may be responsible for the prevention of a T cell response, thus protecting the spinal cord from secondary tissue damage. [less ▲]

Detailed reference viewed: 34 (0 ULg)
Full Text
Peer Reviewed
See detailManfred Matheis: Signaturen des Verschwindens : Das Bild des Philosophen in der Literatur und Philosophie um 1800
Viehöver, Vera ULg

in Philosophischer Literaturanzeiger (2000), 53(1), 12-14

Detailed reference viewed: 57 (2 ULg)
Full Text
Peer Reviewed
See detailEvidence for decoupling of atmospheric CO2 and global climate during the Phanerozoic eon
Veizer, J.; Godderis, Y.; François, Louis ULg

in Nature (2000), 408(6813), 698-701

Atmospheric carbon dioxide concentrations are believed to drive climate changes from glacial to interglacial modes', although geological(1-3) and astronomical(4-6) mechanisms have been invoked as ultimate ... [more ▼]

Atmospheric carbon dioxide concentrations are believed to drive climate changes from glacial to interglacial modes', although geological(1-3) and astronomical(4-6) mechanisms have been invoked as ultimate causes. Additionally, it is unclear(7,8) whether the changes between cold and warm modes should be regarded as a global phenomenon, affecting tropical and high-latitude temperatures alike(9-13), or if they are better described as an expansion and contraction of the latitudinal climate zones, keeping equatorial temperatures approximately constant(14-16). Here we present a reconstruction of tropical sea surface temperatures throughout the phanerozoic eon (the past similar to 550 Myr) from our database(17) of oxygen isotopes in calcite and aragonite shells. The data indicate large oscillations of tropical sea surface temperatures in phase with the cold-warm cycles, thus favouring the idea of climate variability as a global phenomenon. But our data conflict with a temperature reconstruction using an energy balance model that is forced by reconstructed atmospheric carbon dioxide concentrations(18). The results can be reconciled if atmospheric carbon dioxide concentrations were not the principal driver of climate variability on geological timescales for at least one-third of the Phanerozoic eon, or if the reconstructed carbon dioxide concentrations are not reliable. [less ▲]

Detailed reference viewed: 17 (2 ULg)
Peer Reviewed
See detailcompte rendu de : Jacqueline Fabre-Serris, Mythologie et littérature à Rome. La réécriture des mythes aux Iers siècles avant et après J.-C.
Rochette, Bruno ULg

in Kernos : Revue Internationale et Pluridisciplinaire de Religion Grecque (2000), 13

Detailed reference viewed: 77 (1 ULg)
Full Text
See detailLe désistement d'appel et l'acquiescement sont-ils (encore) prohibés en matière de divorce
Boularbah, Hakim ULg

in Divorce : Actualité Juridique, Sociale et Fiscale (2000)

Detailed reference viewed: 91 (1 ULg)
Full Text
See detailWanze/Huccorgne : la grotte du Docteur
Miller, Rebecca ULg; Otte, Marcel ULg

in Chronique de l'Archéologie Wallonne (2000), 8

Detailed reference viewed: 45 (0 ULg)
Full Text
Peer Reviewed
See detailThe use of conducting polymers as cathodes for the electrochemical deposition of magnetic transition metal/rare alloys
Martinot, Lucien; Leroy, Delphine ULg; Zhan, H. et al

in Journal of Materials Chemistry (2000), 10(3), 729-735

We report the electrodeposition of Cu and Ni in aqueous solutions together with the deposition of lanthanides (Gd, Sm, Dy, Tb) and amorphous magnetic alloys of lanthanides with transition metals (Fe, Co ... [more ▼]

We report the electrodeposition of Cu and Ni in aqueous solutions together with the deposition of lanthanides (Gd, Sm, Dy, Tb) and amorphous magnetic alloys of lanthanides with transition metals (Fe, Co) onto various polymer cathodes in formamide solutions. We used conducting polymers (polypyrrole, PPy; polyethylenedioxythiophene, PEDOT) sprayed on different substrates and in addition composite materials based on carbon black (CB) mixed either with polyethylene (PE) or with polycarbonate (PC). In the latter case, the conducting material is easily shaped out in various forms. When deposited on some of these substrates, the alloys appear as an interesting material for magneto-optic recording. The electrochemical process was used for the preparation of Gd/Co and Dy/Fe alloys for which the measured coercitive fields ranged from 250–300 Oe (Dy/Fe) to about 350 Oe (Gd/Fe). We demonstrated also the feasibility of an additional electrografting of a transparent protective layer of polyacrylonitrile (PAN) in order to avoid the corrosion of the alloys by the atmosphere. [less ▲]

Detailed reference viewed: 91 (3 ULg)
Peer Reviewed
See detailNo increased insulin sensitivity after a single intravenous administration of a recombinant human tumor necrosis factor receptor: Fc fusion protein in obese insulin-resistant patients.
Paquot, Nicolas ULg; Castillo, M. J.; Lefebvre, Pierre ULg et al

in Journal of Clinical Endocrinology and Metabolism (2000), 85(3), 1316-9

Inhibition of tumor necrosis factor (TNF)-alpha results in a marked increase in insulin sensitivity in obese rodents. We investigated the influence of a TNF antagonist [Ro 45-2081, a recombinant fusion ... [more ▼]

Inhibition of tumor necrosis factor (TNF)-alpha results in a marked increase in insulin sensitivity in obese rodents. We investigated the influence of a TNF antagonist [Ro 45-2081, a recombinant fusion protein that consists of the soluble TNF-receptor (p55) linked to the Fc portion of human IgG1] on insulin sensitivity of patients with android obesity. Seven patients (five women and two men; mean +/- SD age, 41 +/- 4 yr; body mass index, 36.1 +/- 4.7 kg/m2; waist to hip ratio, 0.99 +/- 0.11) were studied (three patients with normal glucose tolerance and four patients with impaired glucose tolerance or mild diabetes; all were hyperinsulinemic). Each patient underwent two consecutive euglycemic hyperinsulinemic glucose-clamp tests: 48 h after injection of placebo and 48 h after a single i.v. injection of 50 mg Ro 45-2081. In both tests, steady-state plasma glucose and insulin levels were similar. Insulin-mediated glucose disposal (2.23 +/- 0.74 vs. 2.38 +/- 0.99 mg/kg(-1) x min(-1)) and glucose metabolic clearance rate (2.28 +/- 0.85 vs. 2.48 +/- 1.03 mL/kg(-1) x min(-1)) were similar after placebo and after the drug. Indirect calorimetry showed no difference in substrate oxidation rates between the two experimental conditions. In conclusion, under the conditions of this study, no improvement in insulin sensitivity was observed in obese insulin-resistant patients following a single i.v. administration of a recombinant TNF receptor: Fc fusion protein. [less ▲]

Detailed reference viewed: 27 (2 ULg)
Peer Reviewed
See detailMicro-phonochirurgie assistée au laser CO2 des lésions bénignes des cordes vocales
Remacle, Marc; Giovanni, Antoine; Lawson, George et al

in Cahiers d'Oto-rhino-laryngologie, de Chirurgie Cervico-faciale et d'Audiophonologie (Les) (2000), 35(6), 293-300

Detailed reference viewed: 141 (2 ULg)
Full Text
Peer Reviewed
See detailEarly-stage endometriosis: adhesion and growth of human menstrual endometrium in nude mice
NISOLLE, Michelle ULg; Casanas-Roux, Françoise; Donnez, Jacques

in Fertility and Sterility (2000), 74(2), 306-12

Objective: To evaluate the implantation of menstrual endometrium and the early stages of evolution of endometriotic lesions. Design: Experimental prospective study. Setting: An academic research ... [more ▼]

Objective: To evaluate the implantation of menstrual endometrium and the early stages of evolution of endometriotic lesions. Design: Experimental prospective study. Setting: An academic research environment. Animals: Ten nude mice. Intervention(s): A minilaparotomy was performed to place fresh human menstrual endometrial samples in the peritoneal cavity. Removal of the transplants was performed successively on days 1, 3, and 5 by laparotomy. Main Outcome Measure(s): Adhesion of endometrial fragments and early stages of endometrial lesions was morphologically and immunohistochemically studied. Result(s): As early as day 1, stromal cells were found to be attached to the mesothelium. A progressive reorganization of epithelial and stromal cells into endometrial glands was observed. On day 5, cystic endometriotic lesions were characterized by more extensive proliferative activity in glandular cells and a higher VEGF score in stromal cells than that observed in previously removed transplants. Conclusion(s): Menstrual human endometrium is able to implant on intact mesothelium and to reorganize itself into structured glands and stroma under the influence of unknown factors. We suggest that stromal and glandular cells have two distinct roles: stromal cells are involved in the attachment process and glandular cells in the growth of the endometriotic lesion. [less ▲]

Detailed reference viewed: 21 (2 ULg)
Peer Reviewed
See detailThe effect of PIT tags on growth and physiology of age-0 cultured Eurasian perch Perca fluviatilis of variable size
Baras, E.; Malbrouck, C.; Houbart, M. et al

in Aquaculture (2000), 185

Detailed reference viewed: 16 (1 ULg)
Peer Reviewed
See detailChronic hepatitis B therapy with lamivudine in clinical practice - Summary of the discussion
Dixon, J.; Delwaide, Jean ULg; Horsmans, Y. et al

in Acta Gastro-Enterologica Belgica (2000), 63(4), 357-358

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailConception actuelle du traitement de l’arthrose
Reginster, Jean-Yves ULg; Henrotin, Yves ULg

in Revue de la Médecine Générale [=RMG] (2000), 177

Detailed reference viewed: 67 (1 ULg)
Peer Reviewed
See detailDNA-binding mechanism of the Escherichia coli Ada O(6)-alkylguanine-DNA alkyltransferase.
Verdemato, P. E.; Brannigan, J. A.; Damblon, Christian ULg et al

in Nucleic Acids Research (2000), 28(19), 3710-8

The C-terminal domain of the Escherichia coli Ada protein (Ada-C) aids in the maintenance of genomic integrity by efficiently repairing pre-mutagenic O:(6)-alkylguanine lesions in DNA. Structural and ... [more ▼]

The C-terminal domain of the Escherichia coli Ada protein (Ada-C) aids in the maintenance of genomic integrity by efficiently repairing pre-mutagenic O:(6)-alkylguanine lesions in DNA. Structural and thermodynamic studies were carried out to obtain a model of the DNA-binding process. Nuclear magnetic resonance (NMR) studies map the DNA-binding site to helix 5, and a loop region (residues 151-160) which form the recognition helix and the 'wing' of a helix-turn-wing motif, respectively. The NMR data also suggest the absence of a large conformational change in the protein upon binding to DNA. Hence, an O:(6)-methylguanine (O:(6)meG) lesion would be inaccessible to active site nucleophile Cys146 if the modified base remained stacked within the DNA duplex. The experimentally determined DNA-binding face of Ada-C was used in combination with homology modelling, based on the catabolite activator protein, and the accepted base-flipping mechanism, to construct a model of how Ada-C binds to DNA in a productive manner. To complement the structural studies, thermodynamic data were obtained which demonstrate that binding to unmethylated DNA was entropically driven, whilst the demethylation reaction provoked an exothermic heat change. Methylation of Cys146 leads to a loss of structural integrity of the DNA-binding subdomain. [less ▲]

Detailed reference viewed: 19 (0 ULg)
See detailApprendre à résoudre des équations
Demonty, Isabelle ULg; Vlassis, Joëlle ULg

in informations pé (2000), 50

Detailed reference viewed: 33 (3 ULg)