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See detailEnantioselective Syntheses and Absolute Configuration of the Ladybird Defence Alkaloids (+)-Calvine and (+)-2-Epicalvine
Laurent, Pascal ULg; Braekman, Jean-Claude; Daloze, Désiré

in European Journal of Organic Chemistry (2000), 11

Enantiomerically pure (+)-calvine (1a) and (+)-2-epicalvine (Ib), two piperidine alkaloids isolated from ladybird beetles of the genus Calvia (Coccinellidae), were synthesized by two different strategies ... [more ▼]

Enantiomerically pure (+)-calvine (1a) and (+)-2-epicalvine (Ib), two piperidine alkaloids isolated from ladybird beetles of the genus Calvia (Coccinellidae), were synthesized by two different strategies starting from (-)-2,3,6,7,8,8a-hexahydro-3-phenyl-5H-[1,3]oxazolo[3,2-a]pyridine-5-carbonitrile (2). The key steps of these syntheses are the stereocontrolled formation of an asymmetric centre a to the nitrogen atom of 2 and the subsequent introduction of the methoxycarbonylmethyl substituent at the u'-position. Comparison of the optical rotations of the synthetic benzoates (12a) and (12b) with those of the corresponding benzoates derived from the natural compounds has revealed the absolute configuration of (+)-calvine to be (2S,6S) and that of (+)-2-epicalvine to be (2R,6S). [less ▲]

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See detailChronique de la 54ème Session de la SIHDA à Antalya (24-29 Septembre 2000)
Gerkens, Jean-François ULg

in Revue Internationale des Droits de l'Antiquité (2000), L

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See detailPratique de la mise en observation psychiatrique
Boxho, Philippe ULg

in Bulletin d'information du Conseil provincial de Liège de l'Ordre des Médecins (2000)

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See detailLes composantes d'un management efficace dans le cadre des organisations sportives
Cloes, Marc ULg

in Sport (2000), 172

L'objectif de cet article consiste à réaliser une synthèse des notions abordées par les auteurs du colloque "Initiatives en matière de management du sport" et de fournir un outil permettant aux ... [more ▼]

L'objectif de cet article consiste à réaliser une synthèse des notions abordées par les auteurs du colloque "Initiatives en matière de management du sport" et de fournir un outil permettant aux responsables d'organisatons sportives de s'engager dans une auto-analyse des structures dont ils ont la charge. Pour rappel, le management se définit comme l'action de gérer, de diriger, d'assurer le succès d'une organisation. [less ▲]

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See detailL’intégration de l’estompage dans les spatiocartes
Donnay, Jean-Paul ULg

in Bulletin de la Société Géographique de Liège (2000), 38

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See detailBeyond Prejudice as Antipathy: Hostile and Benevolent Sexism Across Cultures
Glick, Peter; Fiske, Susan T.; Mladinic, Antonio et al

in Journal of Personality & Social Psychology (2000), 79(5), 763-775

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See detailAlteration of thyroid hormones, insulin-like growth factor-I (IGF-I) and IGFBPs in finishing calves treated with dexamethasone
Bertozzi, Carlo; Massart, Serge; Darras, Veerle et al

in Canadian Journal of Animal Science (2000), 80

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See detailD'un procès à l'autre - pour une esthétique des médias
Servais, Christine ULg

in Recherches en Communication (2000), 13

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See detailPomme: maladies de conservation. La lutte biologique au moyen de deux souches de levures.
Jijakli, Mohamed ULg

in Arboriculture Fruitiere (2000), (539), 19-23

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See detailNon-alcoholic steatohepatitis: association with obesity and insulin resistance, and influence of weight loss.
Luyckx, Françoise ULg; Lefebvre, Pierre ULg; Scheen, André ULg

in Diabètes & Métabolism (2000), 26(2), 98-106

Non-alcoholic steatohepatitis (NASH) is a disease of emerging identity and importance, and is now considered as one of the commonest liver diseases in western countries. It is frequently associated with ... [more ▼]

Non-alcoholic steatohepatitis (NASH) is a disease of emerging identity and importance, and is now considered as one of the commonest liver diseases in western countries. It is frequently associated with severe obesity, especially abdominal adiposity, and is intimately related to various clinical and biological markers of the insulin resistance syndrome. Especially, both the prevalence and the severity of liver steatosis are related to male sex, body mass index, waist circumference, hyperinsulinaemia, hypertriglyceridaemia and impaired glucose tolerance or type 2 diabetes. A substantial weight loss following gastroplasty is accompanied by a marked reduction in the prevalence and the severity of the various biological abnormalities of the metabolic syndrome and, concomitantly, by an important regression of liver steatosis in most obese patients. However, in some patients, this rapid and drastic weight loss may result in a mild increase in inflammatory lesions (hepatitis), despite the regression of steatosis, which might result from the rapid mobilization of fatty acids or cytokines from adipose tissue, especially visceral fat. The intimate relationship between NASH and obesity leads to the concept that NASH may be considered as another disease of affluence, as is the insulin resistance syndrome and perhaps being part of it. [less ▲]

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See detailOne-Step Gem-Diphosphorylation of Amides and Lactams
Olive, Gilles ULg; Le Moigne, François; Mercier, Anne et al

in Synthetic Communications (2000), 30(4), 619-627

We report the extension of an easy one-step synthesis of amino gem-bisphosphonates through the reaction of amides and lactams with trialkykphosphites

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See detailLat. migdilix (Plaute, Poenulus, 1033)
Rochette, Bruno ULg

in Etudes Classiques (Namur, Belgium) (2000), 68

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See detailA comparison of respiratory pathways in fully habituated and normal non-organogenic sugarbeet callus
Bisbis, Badia; Wagner, Anneke; Kevers, Claire ULg et al

in Journal of Plant Physiology (2000), 156(3), 312-318

The respiration of cells and isolated mitochondria of a habituated non-organogenic (HNO) cell line (auxin- and cytokinin-independent) and of a normal (N) cell line (auxin- and cytokinin-requiring) from ... [more ▼]

The respiration of cells and isolated mitochondria of a habituated non-organogenic (HNO) cell line (auxin- and cytokinin-independent) and of a normal (N) cell line (auxin- and cytokinin-requiring) from sugarbeet (Beta vulgaris L.) was investigated. Oxygen uptake by both cells and mitochondria of the HNO fine was higher than that of the N line. Respiration in the presence of cyanide (i.e. capacity of the alternative pathway) was also higher in the HNO callus as compared with the N one. The measurements of O-2 uptake from isolated HNO and N mitochondria showed that addition of a mixture of substrates (NADH, succinate, malate and NAD) resulted in a higher respiration via the CN-resistant pathway in mitochondria From HNO cells. The activity of cytochrome c oxidase was twice as high as in the N cells as compared with the HNO cells. Immunoblots also showed that a higher alternative oxidase protein was present in HNO cells than in the N cells. A model showing the relationships between the different metabolic pathways previously studied in the HNO cells and the higher respiration via the CN-resistant pathway in the HNO cells is proposed. [less ▲]

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See detailRespiration As The Main Determinant Of Carbon Balance In European Forests
Valentini, R.; Matteucci, G.; Dolman, Aj. et al

in Nature (2000), 404(6780),

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See detailL'icône du visible
Steinmetz, Rudy ULg

in Etudes Phénoménologiques (2000)

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See detailVery Low Surfactant Protein C Contents in Newborn Belgian White and Blue Calves with Respiratory Distress Syndrome
Danlois, F.; Zaltash, S.; Johansson, J. et al

in Biochemical Journal (2000), 351(Pt 3), 779-87

We have studied a respiratory distress syndrome (RDS) occurring in newborn calves of the Belgian White and Blue (BWB) breed that represents the large majority of beef cattle in Belgium. Pulmonary ... [more ▼]

We have studied a respiratory distress syndrome (RDS) occurring in newborn calves of the Belgian White and Blue (BWB) breed that represents the large majority of beef cattle in Belgium. Pulmonary surfactant isolated from 14 BWB newborn calves that died from RDS and from 7 healthy controls was analysed for composition and surface activity. An extremely low content or, in some instances, an absence of surfactant protein C (SP-C) was detected in the RDS samples by Western blotting and differential amino acid analysis [0.03+/-0.01% (w/w) relative to total phospholipids, compared with 0.39+/-0.06% for healthy controls (means+/-S.E.M., P < 0.001)]. The contents of surfactant protein B (SP-B) were similar in RDS and control samples. The crude surfactant samples isolated from RDS calves had higher ratios of total protein to total phospholipid, altered phospholipid profiles and lower SP-A contents. Both crude and organic extracts of RDS surfactant samples showed increased dynamic surface tension compared with healthy controls when evaluated with a pulsating-bubble surfactometer. The addition of purified SP-C to organic extracts of RDS surfactant samples lowered surface tension. Strongly decreased levels of mature SP-C associated with fatal RDS and altered surface activity in vitro have, to the best of our knowledge, not been previously reported. The mechanisms underlying RDS and the decrease in SP-C in BWB calves remain to be established. [less ▲]

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See detailUsing the classification model of an electronic nose to assign unknown malodours to environmental sources and to monitor them continuously
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Wiertz, Véronique et al

in Sensors and actuators. B, Chemical (2000), 69(3), 366-371

The paper provides some considerations resulting from measurements with electronic noses around real sources of malodour in the environment: compost facilities, printing houses, paint shops, waste water ... [more ▼]

The paper provides some considerations resulting from measurements with electronic noses around real sources of malodour in the environment: compost facilities, printing houses, paint shops, waste water treatment plants, rendering plants, settling ponds of sugar factories. The study aims at supplying the concrete information requested by the final user in the field: either a warning signal when the malodour level exceeds some given threshold value, the identification of the source of an odour detected on site, or on-line identification and monitoring of an odour in the field. Very simple instruments are used, either in the laboratory or directly in the field, with a home-made portable e-nose, based on tin oxide sensors. Even with such simple operating conditions, the classification results with DA and PCA are fairly good. The classification functions calibrated with the statistical procedure, on the basis of the learning phase, are used to recognise and to monitor a given malodour. This odour is sometimes mixed with other odorous interferences in the field. The observations reveal some features useful in the frame of the development of a field detector. [less ▲]

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See detailA simple method for neutrophils isolaton in horse
Votion, Dominique ULg; Harmegnies, N. F.; Lekeux, Pierre ULg

in European Journal of Nuclear Medicine (2000), 27

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See detailEcoliers et apprentis-lecteurs : quelle est la motivation des enfants en première primaire ?
Hindryckx, Geneviève ULg; Lafontaine, Annette ULg; Schockert, C.

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

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See detailL'influence de l'article 6 de la Convention européenne des droits de l'homme sur la procédure pénale belge
Jacobs, Ann ULg; Berbuto, Sandra

in Revue de Droit International et de Droit Comparé (2000)

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See detailAccretion from AGB winds.
Thoul, Anne ULg; Jorissen, A.; Goriely, S. et al

in Memorie della Società Astronomica Italiana : Journal of the Italian Astronomical Society (2000), 71

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See detailResource Trading Agents for Adaptive Active Network Applications
Yamamoto, Lidia; Leduc, Guy ULg

in Networking and Information Systems Journal (2000), 3(4-5), 743-768

Adaptive applications seem to be the only realistic answer to the increasing diversity and decentralisation in networks. In order to accommodate fluctuations in network conditions, adaptive applications ... [more ▼]

Adaptive applications seem to be the only realistic answer to the increasing diversity and decentralisation in networks. In order to accommodate fluctuations in network conditions, adaptive applications need to obtain information about resource availability. Using mobile agent technology applied to active networks, new models for adaptive applications can be envisaged. In this article we review the state of the art in agent and active network techniques for adaptive applications, and describe our work on an agent model for trading resources inside an active network node. We apply the model to the case of an audio mixing application. Our simulation results indicate that the model allows the application to make efficient use of the available resources, and to share resources according to user preferences. [less ▲]

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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

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See detailSimulation of first and second order scattering by rough surfaces with a sound ray formalism
Embrechts, Jean-Jacques ULg

in Journal of Sound & Vibration (2000), 229(1)

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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 ▲]

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See detailThe Arabidopsis Thaliana Pin1at Gene Encodes A Single-Domain Phosphorylation-Dependent Peptidyl Prolyl Cis/Trans Isomerase
Landrieu, I.; De Veylder, L.; Fruchart, Js. et al

in Journal of Biological Chemistry (2000), 275(14),

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See detailUnawareness of illness in chronic schizophrenia and its relationship to structural brain measures and neuropsychological tests
Laroi, Frank ULg; Fannemel, M.; Ronneberg, U. et al

in Psychiatry Research : Neuroimaging Section (2000), 100(1), 49-58

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See detailIron Oxidation and Deposition in the Biofilm Covering Montacuta ferruginosa (Mollusca, Bivalvia).
Gillan, D.; Warnau, M.; De Vrind-De Jong, E. W. et al

in Geomicrobiology Journal (2000), 17(2), 141-150

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See detailModelaçao numérica do comportamento de uma estrutura metalica sujeita à acçao do fogo - Analise de varios cenarios de incëndio
Vila Real, P. M. M.; Piloto, P. A. G.; Franssen, Jean-Marc ULg

in Revista Portuguesa de Engenharia de Estruturas (RPEE) (2000), 47

In this work it has been analysed several possible fire scenarios in a steel structure of a commercial building, in order to find which one corresponds to the lowest fire resistance of the structure. It ... [more ▼]

In this work it has been analysed several possible fire scenarios in a steel structure of a commercial building, in order to find which one corresponds to the lowest fire resistance of the structure. It has been used a geometrically and materially non-linear finite element program specially established for the analysis of structures submitted to the fire. As the analysed structure doesn't reach the fire resistance suggested by the Portuguese standards, some solutions are proposed to increase its fire resistance. [less ▲]

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See detailTechnical efficiency of European railways: a distance function approach
Coelli, Tim; Perelman, Sergio ULg

in Applied Economics (2000), 32

This study has two principal objectives. The first objective is to measure and compare the performance of European railways. The second objective is to illustrate the usefulness of econometric distance ... [more ▼]

This study has two principal objectives. The first objective is to measure and compare the performance of European railways. The second objective is to illustrate the usefulness of econometric distance functions in the analysis of production in multioutput industries, where behavioural assumptions such as cost minimization or profit maximization, are unlikely to be applicable. Using annual data on 17 railways companies during 1988± 1993, multioutput distance functions are estimated using corrected ordinary least squares (COLS). The resulting technical efficiency estimates range from 0.980 for the Netherlands to 0.784 for Italy, with a mean of 0.863. The distance function results are also compared with those obtained from single-output production functions, where aggregate output measures are formed using either total revenue or a Tornqvist index. The results obtained indicate substantial differences in parameter estimates and technical efficiency rankings, casting significant doubt upon the reliability of these single-output models, particularly when a total revenue measure is used to proxy aggregate output. [less ▲]

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See detailMethodological bias in home range and mobility estimates when locating radio-tagged trout, Salmo trutta, at different time intervals
Ovidio, Michaël ULg; Philippart, Jean-Claude ULg; Baras, Etienne

in Aquatic Living Resources (2000), 13(6), 449-454

Radio tracking has been extensively used to enhance our knowledge on the movement and home range of fish in general and salmonids in particular. However, the use of various temporal sampling protocols is ... [more ▼]

Radio tracking has been extensively used to enhance our knowledge on the movement and home range of fish in general and salmonids in particular. However, the use of various temporal sampling protocols is likely to overlook fish movements, and produce experimental artefacts, the amplitude of which is unknown and may compromise comparison of fish behaviours revealed by different protocols. Starting from a day-by-day tracking study of brown treat in Belgian waters (Aisne stream, nine fish, minimum 39 daily locations per fish), we re-examined their home range and mobility, through a subsampling process, as if the fish had been located at longer time intervals (2-14 days). The estimates from subsamples were compared to the original data set in order to quantify the corresponding reduction of accuracy from observed data, and how far this could be predicted on the basis of locating frequency. The results clearly indicate that all intervals longer than one day generally generate substantial biases (reduction of accuracy from 0 to 82% for home range and from 5 to 92% for mobility) but these can be partly corrected through the use of predictive models. This analysis demonstrates that any comparison between studies relying on different locating frequencies can generate some ambiguity when interpreting biological phenomena or geographical differences. (C) 2000 Ifremer/CNRS/INRA/IRD/Cemagref/Editions scientifrques et medicales Elsevier SAS. [less ▲]

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See detailTable of Ap and Am Stars in order of Variable-star Names II
Renson, Pierre ULg

in A Peculiar Newsletter (2000), 33

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See detailDetermination Of The Methionine Requirement Of Growing Double-Muscled Belgian Blue Bulls With A Three-Step Method
Froidmont, Eric; Beckers, Yves ULg; Thewis, André ULg

in Journal of Animal Science (2000), 78(1), 233-241

The three-step technique was used to determine the requirements of total amino acids (TAA) and the first-limiting amino acid (AA) in growing double- muscled Belgian Blue bulls (BBb). In Exp. 1, three ... [more ▼]

The three-step technique was used to determine the requirements of total amino acids (TAA) and the first-limiting amino acid (AA) in growing double- muscled Belgian Blue bulls (BBb). In Exp. 1, three double-muscled BBb weighing initially 306 ± 28 kg received a basal diet consisting of 30% meadow hay and 70% concentrate that was poor in digestible protein but had adequate NE because of continuous infusion of dextrose into the duodenum. The intestinal apparent digestibility of essential AA (EAA) was defined according to their duodenal and ileal flows. It averaged 72% but varied between 60% for Met and 79% for Arg. In Exp. 2, five double-muscled BBb (334 ± 22 kg) received the same diet supplemented with duodenal infusions of dextrose and four doses of Na-caseinate (28, 56, 84, and 112% of intestinal digestible dietary AA) in a 4 × 4 Latin square design with one additional animal. Nitrogen retention for the basal diet alone and the four increasing supplements of Na-caseinate reached 49, 61, 70, 80, and 86 g/d, respectively. Nitrogen utilization improved from 34.3% without Na-caseinate supplementation to a maximum of 40.6%, with the third dose supplying 788 g/d of apparently digestible AA. Based on patterns of plasma concentrations, Met, Phe, and Arg were probably the limiting AA when animals optimized N utilization. In Exp. 3, six double-muscled BBb (315 ± 25 kg) fed the basal diet received duodenal infusions of dextrose and AA, equivalent to the third dose in Exp. 2, except for digestible Met (9.3, 14.4, 18.4, 22.4, 26.4, and 30.4 g/d) in a 6 × 6 Latin square design. The Met requirement was close to 26.4 g/d on the basis of N retention. [less ▲]

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See detailAllozyme variation supports an autopolyploid origin and high genetic diversity in tetraploid cranberry, Vaccinium oxycoccos (Ericaceae)
Mahy, Grégory ULg; Bruederle, L. P.; Connors, B. et al

in American Journal of Botany (2000), 87

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See detailCritical points and reaction paths characterization on a potential energy hypersurface
Ramquet, Marie-Noëlle; Dive, Georges ULg; Dehareng, Dominique ULg

in Journal of Chemical Physics (2000), 112(11), 4923-4934

Most of the time, the definitions of minima, saddle points or more generally order p (p=0,...,n) critical points, do not mention the possibility of having zero Hessian eigenvalues. This feature reflects ... [more ▼]

Most of the time, the definitions of minima, saddle points or more generally order p (p=0,...,n) critical points, do not mention the possibility of having zero Hessian eigenvalues. This feature reflects some flatness of the potential energy hypersurface in a special eigendirection which is not often taken into account. Thus, the definitions of critical points are revisited in a more general framework within this context. The concepts of bifurcation points, branching points, and valley ridge inflection points are investigated. New definitions based on the mathematical formulation of the reaction path are given and some of their properties are outlined. (C) 2000 American Institute of Physics. [S0021-9606(00)01110-7]. [less ▲]

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See detailDescription de cas de chondrodystrophie dans trois exploitations de poulets label
Korsak, Nicolas; Marlier, Didier ULg; Mathieu, F. et al

in Annales de Médecine Vétérinaire (2000), 144(6), 415-420

The present paper describes chondrodystrophy (perosis) in three poultry units producing labelled chickens. An unilateral deviation of a hind leg along with a tumefaction of the tarsal joint appeared in 4 ... [more ▼]

The present paper describes chondrodystrophy (perosis) in three poultry units producing labelled chickens. An unilateral deviation of a hind leg along with a tumefaction of the tarsal joint appeared in 4-day- to 4-week-old birds; 5 to 50% of the animals were affected. The growth rate was reduced and cachexia was also observed. There were also breast blisters. Chemical analyses were carried out on the poultry feed in two of the units. The manganese content was below the requirements at about 35 mg/kg; in one unit, the ionic balance (Na+K-Cl) was insufficient along with a too narrow Ca/P. The insufficient supply in manganese was corrected by the addition of manganese sulfate in water at a rate of 120 g/litre of water. Manganese sulfate was also added in the feedstuff at a rate of 120 g/ton. [less ▲]

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See detailCalendes et calendriers: du temps cyclique au temps historique
Biémont, Emile ULg

in Ciel (Le) (2000), 62

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See detailPortée heuristique des analyses de la territorialité et méthodes de mise en évidence des teritoires.
Schmitz, Serge ULg

in Bulletin de la Société Géographique de Liège (2000), 39

The territory is in vogue in the French speaking geography. However there is no consensus about the concepts of territory and territoriality. What are the potential contributions of theses researches to a ... [more ▼]

The territory is in vogue in the French speaking geography. However there is no consensus about the concepts of territory and territoriality. What are the potential contributions of theses researches to a peopole and environment science ? What are the different ways to determine these territories ? Through French-English-and German speaking authors this paper suggests some answers to these questions. [less ▲]

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See detailHigh production of SPARC/osteonectin/BM-40 in mouse metastatic B16 melanoma cell lines
Kato, Y.; Frankenne, F.; Noël, Agnès ULg et al

in Pathology Oncology Research (2000), 6(1), 24-26

Abstract Production of SPARC/osteonectin/BM-40 was determined in mouse B16 melanoma clones BL6 and F10 (high metastatic) and F1 (low metastatic). SPARC was produced greater amount in BL6 and F10 than in ... [more ▼]

Abstract Production of SPARC/osteonectin/BM-40 was determined in mouse B16 melanoma clones BL6 and F10 (high metastatic) and F1 (low metastatic). SPARC was produced greater amount in BL6 and F10 than in F1 cells, showing a good agreement with their metastatic potentials. Moreover, SPARC production was not influenced by culture pH, even in the acidic conditions (= pH 5.9). Although tumor tissues show often low pH due to excessive amount of acidic metabolites such as lactate, most studies have been done in neutral pH. High SPARC production in the acidic medium, therefore, is thought to be an important potential for tumor invasive behaviour. [less ▲]

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See detailHépatites C sporadiques. Risque iatrogène non négligeable
Delwaide, Jean ULg

in Interface (2000), 6

On estime à plus de 150 millions le nombre d'individus infectés par le virus de l'hépatite C dans le monde. En Belgique, cette prévalence est estimée à 10/0, et la plupart des nouvelles contaminations se ... [more ▼]

On estime à plus de 150 millions le nombre d'individus infectés par le virus de l'hépatite C dans le monde. En Belgique, cette prévalence est estimée à 10/0, et la plupart des nouvelles contaminations se retrouvent chez les toxicomanes utilisant des drogues intraveineuses. Les transmissions en milieu hospitalier pourraient cependant rendre compte d'une part non négligeable des hépatites C dites «sporadiques», dont le mode de transmission n'est jusqu'ici pas élucidé. [less ▲]

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See detailClinical course and predictive factors for cyclosporin-induced autologous graft-versus-host disease after autologous haematopoietic stem cell transplantation.
Baron, Frédéric ULg; Gothot, André ULg; Salmon, Jean ULg et al

in British Journal of Haematology (2000), 111(3), 745-53

The administration of cyclosporin A (CyA) after autologous haematopoietic stem cell transplantation (HSCT) induces a systemic autoimmune syndrome mimicking graft-vs.-host disease (GVHD). This syndrome ... [more ▼]

The administration of cyclosporin A (CyA) after autologous haematopoietic stem cell transplantation (HSCT) induces a systemic autoimmune syndrome mimicking graft-vs.-host disease (GVHD). This syndrome, termed autologous GVHD has notable anti-tumour activity in animal studies. We intended to induce autologous GVHD with CyA in patients undergoing an autologous HSCT. We prospectively studied 118 patients with miscellaneous malignancies undergoing an autologous HSCT with low-dose CyA to characterize the clinical syndrome, its frequency and clinical course, and to determine the factors affecting its incidence. Patients received CyA from d -1 through to d 28, first starting at 2 mg/kg intravenously and then orally as soon as feasible. The dose was adjusted to achieve pre-dose blood levels around 100 ng/ml. A skin biopsy was performed when a skin rash was observed. Thirty-three percent of the patients developed clinical GVHD: clinical stage 1 in 21 patients, stage 2 in seven patients, and stage 3 in three patients. Although total body irradiation (TBI) or high-dose cyclophosphamide were previously thought to be needed, autologous GVHD occurred in five out of 12 patients (42%) after a preparative regimen with high-dose melphalan alone. Autologous GVHD was significantly more frequent in patients older than 33 years, in patients who had received high doses of granulocyte-macrophage colony forming units (CFU-GM) and in those with a diagnosis of myeloid malignancy, compared with those with lymphoid malignancies or solid tumours. A significant negative association was also found with HLA-DR6. In lymphoma patients, GVHD occurred more frequently in advanced disease than in first or second complete remission (CR1-2) patients. All other factors studied were not predictive for GVHD. In conclusion, CyA-induced GVHD is reproducibly and safely induced with doses of CyA adapted to achieve blood levels around 100 ng/ml. In retrospective analysis, there was no survival advantage for patients with GVHD. Phase III trials with this approach are needed to evaluate its anti-tumoral effect. [less ▲]

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See detailAutomatisation d'un banc de répartition pour buses de pulvérisation
Lebeau, Frédéric ULg; Hamza, Elies; Destain, Marie-France ULg

in Cahiers Agricultures (2000)

Les bancs de répartition constituent l'élement de base permettant de tester la sensibilité de la distribution transversale des buses de pulvérisation aux différents paramètres de fonctionnement. L'article ... [more ▼]

Les bancs de répartition constituent l'élement de base permettant de tester la sensibilité de la distribution transversale des buses de pulvérisation aux différents paramètres de fonctionnement. L'article présente un banc d'essai conforme à la norme ISO 5682/1 qui permet une lecture automatisée des différentes grandeurs (pression, débit, volume recueilli). [less ▲]

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See detailLa prise en charge de patients Alzheimer au stade débutant : Rôle d'un centre de jour
Adam, Stéphane ULg; Van der Linden, Martial ULg

in Rééducation Orthophonique (2000), 201

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See detailInfo-congres. L'etude "MIRACL" ou "Myocardial Ischemia Reduction with Aggressive Cholesterol Lowering".
Scheen, André ULg

in Revue Médicale de Liège (2000), 55(12), 1064-6

The results of the "MIRACL" trial ("Myocardial Ischemia Reduction with Aggressive Cholesterol Lowering") were presented at the recent annual meeting of the American Heart Association in New Orleans last ... [more ▼]

The results of the "MIRACL" trial ("Myocardial Ischemia Reduction with Aggressive Cholesterol Lowering") were presented at the recent annual meeting of the American Heart Association in New Orleans last November 2000. This study demonstrates that atorvastatin, at a daily dose of 80 mg starting within the first 24 to 96 hours after an acute coronary event (unstable angina or non-Q-wave acute myocardial infarction) and maintained for 4 months, improves the cardiovascular prognosis by decreasing the combined risk of death (any cause), nonfatal myocardial infarction, resuscitated cardiac arrest and worsening angina with new objective evidence of ischemia requiring urgent hospitalization (-16% versus placebo, p < 0.05). [less ▲]

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See detailJohn Milton
Delville, Michel ULg

in Voir (2000), 21

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See detailGelling properties of whey proteins after enzymic fat hydrolysis
Blecker, Christophe ULg; Paquot, Michel ULg; Deroanne, C.

in Journal of Food Science (2000), 65(4), 561-563

The effect of residual fat hydrolysis upon the gelation of whey protein concentrate (WPC) was studied. Gelling properties of a commercial WPC and lipase-treated WPC were evaluated on the basis of least ... [more ▼]

The effect of residual fat hydrolysis upon the gelation of whey protein concentrate (WPC) was studied. Gelling properties of a commercial WPC and lipase-treated WPC were evaluated on the basis of least concentration endpoint gelation, penetration test, texture profile analysis and water-holding capacity. Heat treatment of lipase-treated WPC led to gels with the highest hardness, springiness, cohesiveness and water retention. Such transformed WPC could be advantageously used to help improve texture in formulated meat, bakery, and confectionery products. [less ▲]

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See detailChemical changes and influences of rapeseed antinutritional factors on lamb physiology and performance. 3. Antinutritional factors in plasma and organs
Mabon, N.; Mandiki, S. N. M.; Derycke, G. et al

in Animal Feed Science & Technology (2000), 85(1-2), 111-120

The impact of a high level of rapeseed meal in the diet on the concentration of antinutritional factors in plasma and organs was studied in 66 Texel, Suffolk or crossbred lambs. From 1 month of age till ... [more ▼]

The impact of a high level of rapeseed meal in the diet on the concentration of antinutritional factors in plasma and organs was studied in 66 Texel, Suffolk or crossbred lambs. From 1 month of age till slaughter (132+/-21 days), they were fed ad libitum with concentrates containing 0% or 25% of rapeseed meal obtained either Samourai or Honk rapeseed varieties. Lambs were weaned at 88+/-8 days of age and 24+/-5 kg live weight. Blood and organ samples were taken fortnightly for the determination of antinutritional factors. In plasma and organs, the thiocyanate concentrations were systematically higher in the Samourai and Honk lots than in the control. After weaning, the SCN- concentration in plasma increased up to 490 mu mol l(-1) in the Samourai lot. The goitrogen 5-vinyl-1,3-oxazolidine-2-thione (5-VOT) was determined in muscle, organs (thyroid, liver, kidney and lung) and biological fluid (plasma). The 5-VOT was present only after the ingestion of rapeseed meal but not to the same extent for the two varieties. The Honk rapeseed meal induced a 5-VOT level significantly (p<0.05) higher in the target organs such as lung and thyroid than Samourai. Very low levels were found in muscle, liver, kidney, plasma and lung. (C) 2000 Elsevier Science B.V. All rights reserved. [less ▲]

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See detailStudies in Bacidia sensu lato (lichenized Ascomycetes: Lecanorales). I. The genus Bapalmuia
Kalb, Klaus; Lücking, Robert; Sérusiaux, Emmanuël ULg

in Mycotaxon (2000), 75

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See detailLa langue des testaments dans l'Egypte du IIIe siècle apr. J.-C.
Rochette, Bruno ULg

in Revue Internationale des Droits de l'Antiquité [= RIDA] (2000), 47

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See detailCoupled thermo-magnetic simulation of a foil-winding transformer connected to a non-linear load
Driesen, Johan; Deliège, Geoffrey ULg; Belmans, Ronnie et al

in IEEE Transactions on Magnetics (2000), 36(4), 1381-1385

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See detailThe effect of electron-phonon interaction in iron-doped III-V cubic semiconductors
Colignon, David ULg; Kartheuser, Eduard ULg; Villeret, Murielle

in Journal of Physics : Condensed Matter (2000), 12(12), 2691-2699

A theoretical study of optical absorption and emission measurements of Fe2+ as a substitutional impurity in InP and GaP is presented. A new interpretation of the low-temperature absorption spectrum is ... [more ▼]

A theoretical study of optical absorption and emission measurements of Fe2+ as a substitutional impurity in InP and GaP is presented. A new interpretation of the low-temperature absorption spectrum is proposed based on a weak Jahn-Teller interaction between the electronic excited states and a local gap mode of Gamma(5) symmetry. The model also includes the crystal potential, hybridization with the orbitals of the ligands of the host crystal, spin-orbit interaction and a weak dynamic Jahn-Teller coupling of the orbital ground state of Fe2+ with transverse acoustic phonons of Gamma(3) symmetry. The theoretical model describes with good accuracy the measured positions and relative intensities of the spectral lines. In addition, the mass dependence of the local gap mode of Gamma(5) symmetry reproduces the general features of the fine structures associated with the isotopic shifts of the zero-phonon line and the contribution to the isotopic shifts arising from the difference in zero-point energy between the initial and final states of the transition is evaluated. [less ▲]

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See detailDetermination of Alpha-Solanine and Alpha-Chaconine in Potatoes by High-Performance Thin-Layer Chromatography/Densitometry
Bodart, P.; Kabengera, C.; Noirfalise, Alfred ULg et al

in Journal of AOAC International (2000), 83(6, Nov-Dec), 1468-73

A high-performance thin-layer chromatographic (HPTLC) method was used to determine the glycoalkaloids alpha-solanine and alpha-chaconine in potatoes. Alpha-solanine and alpha-chaconine are extracted from ... [more ▼]

A high-performance thin-layer chromatographic (HPTLC) method was used to determine the glycoalkaloids alpha-solanine and alpha-chaconine in potatoes. Alpha-solanine and alpha-chaconine are extracted from dehydrated potatoes with boiling methanol-acetic acid (95 + 5, v/v). The analytes are separated on a Silica Gel 60 F254 HPTLC plate by a saturated mixture of dichloromethane-methanol-water-concentrated ammonium hydroxide (70 + 30 + 4 + 0.4, v/v), which is used for vertical development of the plate up to a distance of 85 mm. For visualization, the plate is dipped 3 times into a modified Carr-Price reagent, 20% (w/v) antimony(III) chloride in acetic acid-dichloromethane (1 + 3, v/v), and subsequently heated on a hot plate at 105 degrees C for 5 min. The glycoalkaloids all appear as red chromatographic zones on a colorless background. Densitometric quantification is performed at 507 nm by reflectance scanning. After determination of the appropriate response function, the proposed method was validated. Good results with respect to linearity, accuracy, and precision were obtained in the concentration range studied. [less ▲]

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See detailRetrospective study of 206 cases of surgical intestinal pathologies in the horse : incidence, diagnosis, prognosis and complications.
Grulke, Sigrid ULg; Gangl, Monika; Caudron, Isabelle et al

in Annales de Médecine Vétérinaire (2000), 144

This retrospective study of 206 surgical colic cases shows the incidence of the different types of pathologies. The small intestine is concerned in 106 (51,5 %) cases with 102 (96 %) strangulation ... [more ▼]

This retrospective study of 206 surgical colic cases shows the incidence of the different types of pathologies. The small intestine is concerned in 106 (51,5 %) cases with 102 (96 %) strangulation obstructions. The remaining 100 cases (48,5 %) are large intestine obstructions with 45 (45 %) strangulation obstructions. The global survival rate is of 51,5 %, of 42,2 % for small intestine and of 61 % for large intestine. A gravity and a shock score permit to define the prognosis before the decision for surgery. The incidence of the postoperative complications is higher (55,2 %) and the time for recovery is significantly longer for small intestinal pathologies than for large intestine affections. Shock and paralytic ileus are the most frequent complications accounting for 65 % of post operative mortalities. The survival rates are significantly different according to gravity and shock score. The time of recovery is also significantly different in function of the shock score. These findings show the importance of rapid diagnosis of the acute abdominal disease in order to improve the outcome. [less ▲]

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See detailThe increase of the ionospheric activity as measured by GPS
Warnant, René ULg; Pottiaux, Eric

in Earth, Planets, and Space [=EPS] (2000), 52(11), 1055-1060

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See detail"note sous J.P. Jumet, 24 février 2000"
Moreau, Pierre ULg

in Actualités du Droit (2000)

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See detailNumerical discretization of rotated diffusion operators in ocean models
Beckers, Jean-Marie ULg; Burchard, Hans; Deleersnijder, Eric et al

in Monthly Weather Review (2000), 128(8), 2711-2733

A method to improve the behavior of the numerical discretization of a rotated diffusion operator such as, for example, the isopycnal diffusion parameterization used in large-scale ocean models based on ... [more ▼]

A method to improve the behavior of the numerical discretization of a rotated diffusion operator such as, for example, the isopycnal diffusion parameterization used in large-scale ocean models based on the so-called z-coordinate system is presented. The authors then focus exclusively on the dynamically passive tracers and analyze some different approaches to the numerical discretization. Monotonic schemes are designed but are found to be rather complex, while simpler, linear schemes are shown to produce unphysical undershooting and overshooting. It is suggested that the choice of an appropriate discretization method depends on the importance of the rotated diffusion in a given simulation, whether the field to be diffused is dynamically active or not. [less ▲]

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See detailThymic neuroendocrine self-antigens. Role in T-cell development and central T-cell self-tolerance
Geenen, Vincent ULg; Martens, Henri ULg; Brilot, Fabienne et al

in Annals of the New York Academy of Sciences (2000), 917

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See detailThe internet: A global telecommunications solution?
Mathy, Laurent ULg; Edwards, C.; Hutchison, D.

in IEEE Network (2000), 14(4), 46--57

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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

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See detailLe maître de Waha : un exemple de développement durable
Van Ruymbeke, Muriel ULg

in De la Meuse à l'Ardenne (2000), (31), 104-106

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See detailExcess atmospheric carbon dioxide transported by rivers into the Scheldt Estuary
Abril, Gwenaël; Etcheber, Henri; Borges, Alberto ULg et al

in Comptes Rendus de l'Académie des Sciences de Paris (2000), 330

The transport of excess atmospheric CO2 (defined as the fraction of dissolved inorganic carbon (DIC) that can escape as CO2 to the atmosphere due to water-air equilibration), by the five rivers entering ... [more ▼]

The transport of excess atmospheric CO2 (defined as the fraction of dissolved inorganic carbon (DIC) that can escape as CO2 to the atmosphere due to water-air equilibration), by the five rivers entering the Scheldt estuary is investigated. Excess CO2 originates from both respiration in the soil and the river and represents 10 % of the DIC and 6 % of the total carbon input into the estuary. The ventilation of this CO2 in the estuary is however a minor contribution (10 %) to the total estuarine emission to the atmosphere, compared to heterotrophic activity and acidification due to nitrification within the estuarine zone. [less ▲]

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See detailSpatial autocorrelation of allozyme and quantitative markers within a natural population of Centaurea jacea (Asteraceae)
Hardy, O. J.; Vanderhoeven, SONIA ULg; Meerts, P. et al

in Journal of Evolutionary Biology (2000), 13(4), 656-667

This paper compares the fine-scale genetic structure of quantitative traits and allozyme markers within a natural population of Centaurea jacea s.l. To that end, a spatial autocorrelation approach is ... [more ▼]

This paper compares the fine-scale genetic structure of quantitative traits and allozyme markers within a natural population of Centaurea jacea s.l. To that end, a spatial autocorrelation approach is developed based on pairwise correlation coefficients between individuals and using sib families. Statistical properties of the proposed statistics are investigated with numerical simulations. Our results show that most quantitative traits have a significant spatial structure for their genetic component. On average, allozyme markers and the genetic component of quantitative traits have similar patterns of spatial autocorrelation that are consistent with a neutral model of isolation by distance. We also show evidence that environmental heterogeneity generates a spatial structure for the environmental component of quantitative traits. Results are discussed in terms of mechanisms generating spatial structure and are compared with those obtained on a large geographical scale. [less ▲]

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See detailRelationship between the drift of macroinvertebrates and the activity of brown trout in a small stream
Giroux, F.; Ovidio, Michaël ULg; Philippart, Jean-Claude ULg et al

in Journal of Fish Biology (2000), 56(5), 1248-1257

Brown trout Saline trutta were most active in a small stream at night. dusk and dawn when drift rate was highest, but correlations between hourly drift rates and the trout's activity varied substantially ... [more ▼]

Brown trout Saline trutta were most active in a small stream at night. dusk and dawn when drift rate was highest, but correlations between hourly drift rates and the trout's activity varied substantially between individuals, between different dates for a single individual, and between different periods of the daily cycle. On some occasions. the trout were responsive to the total drift rate, either at night or during the day, and on others to the largest drifting organisms only (terrestrial organisms, adults of Ephemeroptera, Diptera and Trichoptera). The study supports the idea that trout adapt their activity pattern to the abundance of drifting prey, either as generalists towards any organism, or as specialists towards the largest ones. (C) 2000 The Fisheries Society of the British Isles. [less ▲]

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See detailLa place quantitative et qualitative de la viande dans notre alimentation.
Mary, Arnaud; Sindic, Marianne ULg

in Dieta (2000), (22), 6-11

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See detailConstructions and applications of wavelets in Sobolev spaces
Bastin, Françoise ULg

in Revista Ciencias Matematicas (2000), 18(2), 145-177

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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 ▲]

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See detailEcological, morphological and allozymic differentiation between diploid and tetraploid knapweeds (Centaurea jacea) from a contact zone in the Belgian Ardennes
Hardy, O. J.; Vanderhoeven, SONIA ULg; De Loose, M. et al

in New Phytologist (2000), 146(2), 281-290

In the northeastern part of Belgium, the Centaurea jacea complex shows extensive morphological variation and is represented by a diploid (2n = 22) and a tetraploid (2n = 44) cytotype. Polysomic ... [more ▼]

In the northeastern part of Belgium, the Centaurea jacea complex shows extensive morphological variation and is represented by a diploid (2n = 22) and a tetraploid (2n = 44) cytotype. Polysomic inheritance of allozyme markers in the tetraploids, suggesting autopolyploidy, is here demonstrated for the first time. In order to test whether the tno cytotypes occupy distinct habitats and possess different gene pools, patterns of allozymic and morphological variation were investigated in relation to ploidy level and site characteristics in 26 populations from the Belgian Ardennes. The two cytotypes showed a parapatric distribution, the diploids occurring at higher elevations (mostly above 500 m) than the tetraploids (mostly below 500 m). Three mixed populations were found near the contact zone of the two cytotypes. Within the mixed populations no triploid plant and no evidence for gene flow between cytotypes were found, despite widely overlapping flowering periods. The two cytotypes can be distinguished on the basis of morphological traits and enzymatic gene pools. The congruence of morphological and allozymic variation with chromosome numbers suggests a secondary contact between the two cytotypes with limited gene flow between them. The origin and persistence of the parapatric distribution are discussed. [less ▲]

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See detailLes arcanes de la prescription de l'action publique
Jacobs, Ann ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2000)

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See detailEffect of nicotine on rat gingival fibroblasts in vitro
Lahmouzi, Jamila ULg; Simain-Sato, Franklin ULg; Defresne, Marie-Paule ULg et al

in Connective Tissue Research (2000), 41(1), 69-80

Nicotine from 3 to 5 mM affects growth and survival rate of rat gingival fibroblasts in vitro. Ultrastructural analysis revealed dilated mitochondria and vacuolization in treated cells, suggestive of ... [more ▼]

Nicotine from 3 to 5 mM affects growth and survival rate of rat gingival fibroblasts in vitro. Ultrastructural analysis revealed dilated mitochondria and vacuolization in treated cells, suggestive of necrosis, but increased apoptosis was also revealed by cytometry. On the basis of this in vitro study, it appear that tobacco, through its component nicotine, may directly affect various functions of rat gingival fibroblasts [less ▲]

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See detailFractionation and reconstitution experiments provide insight into the role of gluten and starch interactions in pasta quality
Delcour, Jan; Vansteelandt, J.; Hythier, M. C. et al

in Journal of Agricultural and Food Chemistry (2000), 48(9), 3767-3773

Commercial durum wheat (Triticum durum desf.) semolina was fractionated into starch, gluten, and water extractables. Starch surface proteins and surface lipids were removed, and two starches with ... [more ▼]

Commercial durum wheat (Triticum durum desf.) semolina was fractionated into starch, gluten, and water extractables. Starch surface proteins and surface lipids were removed, and two starches with manipulated granule size distributions were produced to influence starch properties, affecting its interaction with other semolina components. Reconstituted spaghetti was made with untreated (control) or treated starches. The pasta made from the starting semolina material had lower cooking time and was of lower quality than the samples made from reconstituted material. This was not due to changes in gluten properties as a result of the first step of the fractionation process. For the reconstituted samples, starch interaction behavior was not changed after surface protein or surface lipid removal. Starch surface properties thus do not influence the starch interaction behavior, indicating that starch-gluten interaction in raw (uncooked) pasta is mainly due to physical inclusion. All reconstituted pasta samples also had generally the same cooking quality. It was concluded that the small changes in starch gelatinization behavior, caused by the above;mentioned starch modifications, are of little importance for pasta quality. [less ▲]

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See detailLa rémunération de base de l'apprenti victime d'un accident du travail
Michiels, Olivier ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2000), 25

L'article s'attache à la notion de "rémunération de base" de l'apprenti victime d'un accident du travail.

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See detailExport production in the Bay of Biscay as estimated from barium - barite in settling material: a comparison with new production
Dehairs, F.; Fagel, Nathalie ULg; Antia, A. et al

in Deep-Sea Research Part I, Oceanographic Research Papers (2000), 47(4), 583-601

We present barium data for sediment traps deployed in a northeast Atlantic margin environment (Bay of Biscay). Fluxes of excess barium were measured with the objective of calculating carbon export ... [more ▼]

We present barium data for sediment traps deployed in a northeast Atlantic margin environment (Bay of Biscay). Fluxes of excess barium were measured with the objective of calculating carbon export production rates from the surface mixed layer and thus contribute to the understanding of organic carbon transport in a margin environment. Therefore, it was necessary to properly understand the different processes that affected the barium fluxes in this margin environment. Seasonal variability of POC/Ba flux ratios and decrease of barium solubilisation in the trap cups with increasing depth in the water column probably indicate that the efficiency of barite formation in the organic micro-environment varies with season and that the process is relatively slow and not yet completed in the upper 600 m of water column. Thus barite presence in biogenic aggregates will significantly depend on water column transit time of these aggregates. Furthermore, it was observed that significant lateral input of excess-Ba can occur, probably associated with residual currents leaving the margin. This advected excess-Ba affected especially the recorded fluxes in the deeper traps (>1000 m) of the outer slope region. We have attempted to correct for this advected excess-Ba component, using Th (reported by others for the same samples) as an indicator of enhanced lateral flux and assigning a characteristic Ba/Th ratio to advected material, Using transfer functions relating excess-Ba flux with export production characteristic of margin areas, observed Ba fluxes indicate an export production between 7 and 18 g C m(-2) yr(-1). Such values are 3-7 times lower than estimates based on N-nutrient uptake and nutrient mass balances, but larger and more realistic than is obtained when a transfer function characteristic of open ocean systems is applied. The discrepancy between export production estimates based on excess-Ba fluxes and nutrient uptake could be resolved if part of the carbon is exported as dissolved organic matter. Results suggest that margin systems function differently from open ocean systems, and therefore Ba-proxy rationales developed for open ocean sites might not be applicable in margin areas. (C) 2000 Elsevier Science Ltd. All rights reserved. [less ▲]

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See detailThe bushlike radiation of muroid rodents is exemplified by the molecular phylogeny of the LCAT nuclear gene.
Michaux, Johan ULg; Catzeflis, F.

in Molecular Phylogenetics & Evolution (2000), 17(2), 280-93

Phylogenetic relationships among 40 extant species of rodents, with an emphasis on the taxonomic sampling of Muridae and Dipodidae, were studied using sequences of the nuclear protein-coding gene LCAT ... [more ▼]

Phylogenetic relationships among 40 extant species of rodents, with an emphasis on the taxonomic sampling of Muridae and Dipodidae, were studied using sequences of the nuclear protein-coding gene LCAT (lecithin cholesterol acyl transferase). Analysis of 804 bp from the exonic regions of LCAT confirmed many traditional groupings in and around Muridae. A strong support was found for the families Muridae (represented by 29 species) and Dipodidae (5 species). Compared with Sciuridae, Gliridae, and Caviomorpha, the Dipodidae family appeared the closest relative of Muridae, confirming the suprafamilial Myodonta concept. Within the speciose family Muridae, the first branching leads to the fossorial Spalacinae and semifossorial Rhyzomyinae. The remaining components of Muridae appear as a polytomy from which are issued Sigmodontinae, Calomyscinae, Arvicolinae, Cricetinae, Mystromyinae, Nesomyinae, and some Dendromurinae (Steatomys and Dendromus). This phylogeny is interpreted as the result of a bushlike radiation at the end of the early Miocene, leading to emergence of most living subfamilies. The separation between three additional taxa, Murinae, Gerbillinae, and "Acomyinae" (which comprises the genera Acomys, Deomys, Uranomys, and Lophuromys), has occurred more recently from a common ancestor issued from the main basal radiation. As previously shown by other molecular studies, the vlei rats, Otomyinae, are nested within Old World Murinae. In the same way, the zokors, Myospalacinae, appear strongly nested within the hamsters, Cricetinae. Finally, we propose a sister group relationship between Malagasy Nesomyinae and south African Mystromyinae. [less ▲]

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See detailCancer in Transplant Recipients
Detry, Olivier ULg; Honore, Pierre ULg; Meurisse, Michel ULg et al

in Transplantation Proceedings (2000), 32(1), 127

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See detailPerformance of Belgian general practitioners: a "best practice approach based on patient level data"
Fecher-Bourgeois, Fabienne ULg; Gillet, Pierre ULg

in Cahiers Economiques de Bruxelles (2000), 167(3ème trimestre 2000), 381-396

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See detailHydrodynamical and ecosystem processes in ice-covered seas of the Southern and Northern Hemispheres
Goffart, Anne ULg; Hecq, Jean-Henri ULg

in Journal of Marine Systems (2000), 27

Preface of the 30th International Liège Colloquium on Ocean Hydrodynamics Liège, Belgium (May 4–8 1998) : Hydrodynamical and ecosystem processes in ice-covered seas of the Southern and Northern ... [more ▼]

Preface of the 30th International Liège Colloquium on Ocean Hydrodynamics Liège, Belgium (May 4–8 1998) : Hydrodynamical and ecosystem processes in ice-covered seas of the Southern and Northern Hemispheres. Issue of JMS edited by Anne Goffart and Jean-Henri Hecq. [less ▲]

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See detailLa spatio-cartographie
Donnay, Jean-Paul ULg

in Bulletin de la Société Géographique de Liège (2000), 38(1),

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See detailLa sécurité des filières agro-alimentaires : de l'éthique à l'étiquette.
Sindic, Marianne ULg

in Cahiers Agricultures (2000), 9

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See detailGiant lymph node hyperplasia.
NCHIMI LONGANG, Alain ULg; Biquet, J. F.; Rausin, L.

in JBR-BTR : organe de la Societe royale belge de radiologie (SRBR) = orgaan van de Koninklijke Belgische Vereniging voor Radiologie (KBVR) (2000), 83(1), 19

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See detailNutrient depletions in the Ross Sea and their relation with pigment stocks
Goeyens, Leo; Elskens, Marc; Catalano, Giulio et al

in Journal of Marine Systems (2000), 27

The present article depicts a first attempt to relate the governing nutrient uptake regime and phytopigment signature of the Ross Sea. Based on nutrient and phytopigment data obtained during two cruises ... [more ▼]

The present article depicts a first attempt to relate the governing nutrient uptake regime and phytopigment signature of the Ross Sea. Based on nutrient and phytopigment data obtained during two cruises in the Ross Sea, two distinct groups were recognised. The first one was characterised by moderate nutrient nitrate and silicic acid depletions in combination with relatively high diatom and Phaeocystis abundance. The second group showed very low nutrient depletions and very poor diatom abundance. Average depth specific nitrate depletions were 8.1 and 1.1 μM and average silicic acid depletions were 21.5 and 1.3 μM, respectively. The nutrient consumption patterns did not match the conditions of silicic acid excess (SEA) or nitrate excess areas (NEA), a clear trend being probably obscured by very poor seasonal maturity of several sampling stations. The contrast between both groups is largely explained by small differences in nitrogen uptake regime of the major phytoplankters. During early season, the diatoms meet the majority of their nitrogen requirements by nitrate uptake, with few exceptions where ammonium is the most important nitrogenous substrate. On average, their nitrate uptake capacity is lower than that of Phaeocystis (average specific nitrate uptake rates were 0.021 and 0.036 day y-1 for diatoms and Phaeocystis, respectively). The latter phytoplankton always shows predominance of nitrate uptake. Both groups are subject to inhibition of nitrate uptake when ammonium availability increases, and it is likely that the diatoms are more sensitive to the inhibitory effect of ammonium. [less ▲]

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See detailSimulated And Measured Coefficients Of Variation For The Spray Distribution Under A Static Spray Boom
Debouche, Charles ULg; Huyghebaert, B.; Mostade, O.

in Journal of Agricultural Engineering Research (2000), 76(4), 381-388

The spray pattern characteristics of a number of different series of flat fan nozzles were investigated in two ways. The first method was to measure the distribution by means of a classic patternator with ... [more ▼]

The spray pattern characteristics of a number of different series of flat fan nozzles were investigated in two ways. The first method was to measure the distribution by means of a classic patternator with collecting cylinders. The second method consisted of numerical simulation of the distribution, by combining the real distributions of a number of nozzles. The real distribution was measured on a classic patternator for each nozzle separately. The numerical simulation is computerized and automated. This system allows both time and labour gains, and permits multiple trials with the same series of nozzles. Numerical simulation results are compared with spray distributions obtained on the patternator. The sprayed volumes of liquid were found to be significantly different from the simulated ones (level of significance 95%). However, the coefficient of variation characterizing the homogeneity of the spread volumes can be calculated using simulated volumes. This can be done once an empirical linear relation is established between the coefficients of variation obtained from simulated volumes and the ones obtained from measured volumes. [less ▲]

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See detailRandom matrix model for chiral symmetry breaking and color superconductivity in QCD at finite density
Vanderheyden, Benoît ULg; Jackson, A. D.

in Physical Review. D : Particles and Fields (2000), 62(9), 094010

We consider a random matrix model which describes the competition between chiral symmetry breaking and the formation of quark Cooper pairs in QCD at finite density. We study the evolution of the phase ... [more ▼]

We consider a random matrix model which describes the competition between chiral symmetry breaking and the formation of quark Cooper pairs in QCD at finite density. We study the evolution of the phase structure in temperature and chemical potential with variations of the strength of the interaction in the quark-quark channel and demonstrate that the phase diagram can realize a total of six different topologies. A vector interaction representing single-gluon exchange reproduces a topology commonly encountered in previous QCD models, in which a low-density chiral broken phase is separated from a high-density diquark phase by a first-order line. The other five topologies either do not possess a diquark phase or display a new phase and new critical points. Since these five cases require large variations of the coupling constants away from the values expected for a vector interaction, we conclude that the phase diagram of finite density QCD has the topology suggested by single-gluon exchange and that this topology is robust. [less ▲]

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See detailFrom obesity to diabetes: why, when and who?
Scheen, André ULg

in Acta Clinica Belgica (2000), 55(1), 9-15

Obesity is considered as the most important risk factor for type 2 diabetes. We will briefly discuss why does obesity predispose to diabetes, when does diabetes occur in obese subjects and who among obese ... [more ▼]

Obesity is considered as the most important risk factor for type 2 diabetes. We will briefly discuss why does obesity predispose to diabetes, when does diabetes occur in obese subjects and who among obese individuals is particularly prone to develop diabetes. Obesity, especially intraabdominal adiposity, is associated with increased FFA plasma concentrations which exert a major negative effect on insulin sensitivity at both muscular and hepatic sites. Various metabolic, haemodynamic and hormonal theories have been proposed to explain insulin resistance in obese subjects. A specific role of TNF-alpha has been recently suggested. However, besides insulin resistance, defective insulin secretion is a prerequisie for the development of overt type 2 diabetes. Both lipotoxicity and glucotoxicity may initiate and perpetuate a vicious circle responsible for the metabolic deterioration. Diabetes occurs as a late phenomenon in obesity and is preceded by years of impaired glucose tolerance. The progression to diabetes is heralded by an inability of the B cell to maintain its previously high rate of insulin secretion in response to glucose in face of insulin resistance. This propensity to develop type 2 diabetes may be genetically determined and/or triggered by environmental factors. The evolution from obesity to diabetes represents a continuum that progresses through different phases in which defects in both insulin action and insulin secretion play a critical interaction and must be looked at in concert. [less ▲]

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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

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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 ▲]

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See detailLa gestion integrée des déchets solides de Kigali (Rwanda)
Culot, Marc ULg; Nzeyimana, François

in Echos du COTA (2000), (87), 6-9

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See detailLes non-recommandations dans le traitement de l'arthrose et de la polyarthrite rhumatoïde, ou pourquoi la médecine basée sur le niveau de preuve ne s'applique pas (encore) à la rhumatologie
Malaise, Michel ULg

in Revue Médicale de Liège (2000), 55(5), 466-475

The speed with which the phrase "Evidence-Based Medicine" has entered our language has been astonishing. Virtually all medical areas are concerned, but it probably applies best when clearcut diagnosis can ... [more ▼]

The speed with which the phrase "Evidence-Based Medicine" has entered our language has been astonishing. Virtually all medical areas are concerned, but it probably applies best when clearcut diagnosis can be made or when mortality or well-defined morbidity are the outcomes, two conditions not really frequently encountered in rheumatology. We will discuss why rheumatology is probably not ready yet for the concept and will systematically review why "Evidence-Based Medicine" could in fact be "evidence-biased medicine". We will emphasize why evidence-based medicine can not replace the personal experience and knowledge of patients, two major corner-stones in the clinician's daily work, but should simply be an access to scientific data for the benefit of both patient and physician. [less ▲]

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See detailSimplification of boolean verification conditions
Gribomont, Pascal ULg

in Theoretical Computer Science (2000), 239(1), 165-185

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See detailChemical profiles of Amblystegium riparium, Fontinalis antipyretica and Rhynchostegium riparioides in the Grand-Duchy of Luxembourg
Vanderpoorten, Alain ULg; Ector, L.; Hoffmann, L.

in Nova Hedwigia (2000), 71(1-2), 209-221

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See detailLa réforme grégorienne et les tentatives de réforme du calendrier grégorien
Biémont, Emile ULg

in Bulletin de liaison du Département d'Etudes grecques, latines et Orientales de l'Université de Louvain (2000), 11

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See detailTracabilite dans la filiere animale.
Portetelle, Daniel ULg; Haezebroeck, V.; Mortiaux, F. et al

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

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See detailSpectroscopic properties of protochlorophyllide analyzed in situ in the course of etiolation and in illuminated leaves
Schoefs, B.; Bertrand, M.; Franck, Fabrice ULg

in Photochemistry & Photobiology (2000), 72(1), 85-93

The spectroscopic properties of photoactive (ie. flash-transformable) and nonphotoactive protochlorophyll(ide)s (Pchl(ide)) were reinvestigated during the development of bean leaves in darkness. Two ... [more ▼]

The spectroscopic properties of photoactive (ie. flash-transformable) and nonphotoactive protochlorophyll(ide)s (Pchl(ide)) were reinvestigated during the development of bean leaves in darkness. Two phases in the process of Pchl(ide) accumulation were apparent from quantitative measurements of pigment content: a lag phase (first week) during which photoactive Pchl(ide) accumulated faster than nonphotoactive Pchl(ide); and a fast phase (second week), showing parallel accumulation of both types of Pchl(ide). 'Flashed-minus-dark' absorbance difference spectra recorded in situ at 77 K showed that P650-655 was the predominant form of photoactive protochlorophyllide regardless of developmental stage. Quantitative analysis of energy migration processes between the Pchl(ide) forms showed the existence of energy transfer units containing a 1:8 ratio of nonphotoactive and photoactive Pchl(ide)s during development. Gaussian deconvolution of in situ 77 K fluorescence spectra indicated that the 633 nm band of nonphotoactive Pchl(ide) was made of four bands, at 625, 631, 637 and 643 nm, whose relative amplitudes only slightly changed during development. The emission band of photoactive Pchlide was also analyzed using the same method. Three components were found at 644, 652 and 657 nm, The emission band of P650-655 included the last two components, which become predominant only in fully etiolated plants. Photoactive Pchlide with an emission maximum at 653 nm was detected in the light during development of leaves of photoperiodically grown plants. [less ▲]

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See detailLe mélèze, une essence à haut potentiel de production
Pauwels, Dominique; Rondeux, Jacques ULg

in Silva Belgica (2000), 107(3), 6-10

Dans un précédent article "le mélèze, un atout dans les objectifs de diversification de notre sylviculture" (PAUWELS et RONDEUX, 2000), nous nous sommes efforcés de montrer que la culture du mélèze ... [more ▼]

Dans un précédent article "le mélèze, un atout dans les objectifs de diversification de notre sylviculture" (PAUWELS et RONDEUX, 2000), nous nous sommes efforcés de montrer que la culture du mélèze méritait, à plusieurs égards, d'être davantage prise en compte en Région wallonne et ce, pour autant qu'une sylviculture adaptée à l'essence et aux conditions du milieu soit appliquée. Les lignes qui suivent sont consacrées à des résultats originaux résultant d'une étude menée par l'Unité de Gestion et Economie forestières de la Faculté universitaire des Sciences agronomiques de Gembloux, sur la croissance des mélèzes en Région wallonne. Le potentiel de croissance du mélèze a été évalué à partir d'analyses de tiges ou de mesures réalisées au sein de placettes de production (figure 1) remesurées tous les 3 ans. A partir d'une exploitation appropriée de ces données, on a déduit une gamme de traitements sylvicoles capables de rencontrer les objectifs de production que l'essence permet d'atteindre. [less ▲]

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