References of "2000"
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See detailTemporal differentiation in two strains of small rodents: a wood mouse (Apodemus sylvaticus) and an albino mouse (Mus musculus OF1)
Lejeune, Helga ULg; Huynen, Marie-Claude ULg; Ferrara, André ULg

in Behavioural Processes (2000), 52(2-3), 155-169

Wood mice (Apodemus sylvaticus) and OF1 albino mice (Mus musculus) were compared over durations ranging from 0.5 to 7 s, using the differential reinforcement of response duration schedule (DRRD) and a ... [more ▼]

Wood mice (Apodemus sylvaticus) and OF1 albino mice (Mus musculus) were compared over durations ranging from 0.5 to 7 s, using the differential reinforcement of response duration schedule (DRRD) and a 'platform' response, i.e. staying on a small platform for a specified criterion duration to be reinforced. Species-related differences were found for mean response durations, efficiency and the number of trials needed to reach a preset performance criterion. Coefficients of variation of response durations did not differ. Overall, OF1 mice needed more trials than wood mice to reach a temporal criterion. However, over 3-7 s, data from both strains almost fitted the behavioral assumptions of Scalar Timing theory. Performance of mongolian gerbils (Meriones unguiculatus) trained in a similar setting was shown for visual comparison. [less ▲]

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See detailProtection fongicide du blé intégrée au mode de conduite de la culture: exemple de la Belgique
Bodson, Bernard ULg; Meeus, Patrick; Moreau, Jean-Marc et al

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

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

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

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See detailPlacental growth hormone (GH), GH-binding protein, and insulin-like growth factor axis in normal, growth-retarded, and diabetic pregnancies: Correlations with fetal growth
McIntyre, H. D.; Serek, R.; Crane, D. I. et al

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

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

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

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See detailComptes-rendus du symposium « Les dermatophytoses des carnivores domestiques en dermatologie vétérinaire »
Mignon, Bernard ULg

Book published by Presses de la Faculté de Médecine Vétérinaire de l’Université de Liège (2000)

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See detailTraitement chirurgical "classique" de l'épilepsie - Stimulation du nerf vague.
Martin, Didier ULg

Conference (2000, December 01)

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See detailVariations of the Ap star HDE 318107
Manfroid, Jean ULg; Mathys, G.

in Astronomy and Astrophysics (2000), 364

The rotation period of the Ap star HDE 318107 has been determined from magnetic and photometric observations obtained between August 1992 and September 1998.

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See detailA Near-IR [Fe II] line imaging survey of supernova remnants in M33
Morel, Thierry ULg; Doyon, R.; St-Louis, N.

in Proceedings 232. WE-Heraeus Seminar (2000, December 01)

We report on the first near-IR [Fe II] line imaging survey of extragalactic SNRs. Observations of a sample of 42 objects drawn from an optically-selected catalogue of SNRs in M33 provide evidence for a ... [more ▼]

We report on the first near-IR [Fe II] line imaging survey of extragalactic SNRs. Observations of a sample of 42 objects drawn from an optically-selected catalogue of SNRs in M33 provide evidence for a wide range in the [Fe II]λ 1.644 micron luminosities. This can be understood as being primarily due to variations in the chemical abundances and density of the local ISM, although shock conditions may also play a significant role. We briefly discuss how these results may be used to better calibrate the supernova rate of star-forming galaxies. [less ▲]

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See detailLe kimbanguisme : un millénarisme dynamique de la terre aux Cieux
Melice, Anne ULg

Scientific conference (2000, December 01)

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See detailThe uses of images of cultural differences in the Belgian Political Debate
Martiniello, Marco ULg

Scientific conference (2000, December 01)

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See detailConsiderations on delocalized HbA(1c) assays
Bordas-Fonfrede, M.; Selam, J. L.; Goudable, J. et al

in Diabètes & Métabolism (2000), 26(6), 508-512

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See detailStripes Ordering in Self-Stratification Experiments of Binary and Ternary Granular Mixtures
Lecocq, N.; Vandewalle, Nicolas ULg

in Physical Review. E : Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics (2000), 62(6, Pt B), 8241-4

The self-stratification of binary and ternary granular mixtures has been experimentally investigated. Ternary mixtures lead to a particular ordering of the strata which was not accounted for in former ... [more ▼]

The self-stratification of binary and ternary granular mixtures has been experimentally investigated. Ternary mixtures lead to a particular ordering of the strata which was not accounted for in former explanations. Bouncing grains are found to have an important effect on stratum formation. A complementary mechanism for self-stratification of binary and ternary granular mixtures is proposed. [less ▲]

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See detailTaxonomy of stock market indices
Bonanno, G.; Vandewalle, Nicolas ULg; Mantegna, R. N.

in Physical Review. E : Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics (2000), 62(6),

We investigate sets of financial nonredundant and nonsynchronously recorded time series. The sets are composed by a number of stock market indices located all over the world in five continents. By ... [more ▼]

We investigate sets of financial nonredundant and nonsynchronously recorded time series. The sets are composed by a number of stock market indices located all over the world in five continents. By properly selecting the time horizon of returns and by using a reference currency we find a meaningful taxonomy. The detection of such a taxonomy proves that interpretable information can be stored in a set of nonsynchronously recorded time series. [less ▲]

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See detailEvaluation du dispositif "Clauses sociales dans les marchés publics"
Fecher-Bourgeois, Fabienne ULg; Grosjean, Philippe; Sak, Barbara

Report (2000)

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See detailRegulation of Etioplast Pigment-Protein Complexes, Inner Membrane Architecture, and Protochlorophyllide a Chemical Heterogeneity by Light-Dependent Nadph:Protochlorophyllide Oxidoreductases a and B
Franck, Fabrice ULg; Sperling, U.; Frick, G. et al

in Plant Physiology (2000), 124(4), 1678-96

The etioplast of dark-grown angiosperms is characterized by the prolamellar body (PLB) inner membrane, the absence of chlorophyll, and the accumulation of divinyl and monovinyl derivatives of ... [more ▼]

The etioplast of dark-grown angiosperms is characterized by the prolamellar body (PLB) inner membrane, the absence of chlorophyll, and the accumulation of divinyl and monovinyl derivatives of protochlorophyll(ide) a [Pchl(ide) a]. Either of two structurally related, but differentially expressed light-dependent NADPH:Pchlide oxidoreductases (PORs), PORA and PORB, can assemble the PLB and form dark-stable ternary complexes containing enzymatically photoactive Pchlide-F655. Here we have examined in detail whether these polypeptides play redundant roles in etioplast differentiation by manipulating the total POR content and the PORA-to-PORB ratio of etiolated Arabidopsis seedlings using antisense and overexpression approaches. POR content correlates closely with PLB formation, the amounts, spectroscopic properties, and photoreduction kinetics of photoactive Pchlide, the ratio of photoactive Pchlide-F655 to non-photoactive Pchl(ide)-F632, and the ratio of divinyl- to monovinyl-Pchl(ide). This last result defines POR as the first endogenous protein factor demonstrated to influence the chemical heterogeneity of Pchl(ide) in angiosperms. It is intriguing that excitation energy transfer between different spectroscopic forms of Pchl(ide) in etiolated cotyledons remains largely independent of POR content. We therefore propose that the PLB contains a minimal structural unit with defined pigment stoichiometries, within which a small amount of non-photoactive Pchl(ide) transfers excitation energy to a large excess of photoactive Pchlide-F655. In addition, our data suggests that POR may bind not only stoichiometric amounts of photoactive Pchlide, but also substoichiometric amounts of non-photoactive Pchl(ide). We conclude that the typical characteristics of etioplasts are closely related to total POR content, but not obviously to the specific presence of PORA or PORB. [less ▲]

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See detailL'impact thermique et écologique du fonctionnement des centrales électriques sur la Sambre et la Meuse
Everbecq, Etienne ULg; Bourouag, Mohamed ULg; Deliège, Jean-François ULg et al

Report (2000)

L’objectif de cette étude est de mieux comprendre et de quantifier (via la modélisation mathématique) les phénomènes qui se déroulent dans le milieu aquatique au droit et en aval des centrales électriques ... [more ▼]

L’objectif de cette étude est de mieux comprendre et de quantifier (via la modélisation mathématique) les phénomènes qui se déroulent dans le milieu aquatique au droit et en aval des centrales électriques, en particulier les effets du cumul des prises d’eau et rejets thermiques sur l’écosystème aquatique. L'étude concernait les centrales électriques situées sur la Meuse en région wallonne : la centrale de Tihange, la centrale des Awirs, la centrale de Seraing et la centrale d’Angleur. L'étude a été organisée en 4 phases : i) la détermination de l'impact élémentaire de chaque centrale et la détermination de scénarios de fonctionnement des centrales; ii) la détermination de l'impact hydrologique et de l'impact thermique (individuel et cumulé) du fonctionnement des centrales électriques sur la Meuse; iii) la détermination de l'impact écologique du fonctionnement des centrales électriques sur l’écosystème Meuse; iiii) l'examen des actions possibles pour minimiser les impacts [less ▲]

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See detailThe Contraceptive Profile of a New Oral Contraceptive with Antimineralocorticoid and Antiandrogenic Effects
Foidart, Jean-Michel ULg

in European Journal of Contraception & Reproductive Health Care : The Official Journal of the European Society of Contraception (2000), 5(Suppl 3), 25-33

Yasmin (Schering AG, Berlin, Germany), a new oral contraceptive containing 30 microg ethinylestradiol combined with 3 mg drospirenone, effectively inhibits ovulation, as demonstrated by measurement of ... [more ▼]

Yasmin (Schering AG, Berlin, Germany), a new oral contraceptive containing 30 microg ethinylestradiol combined with 3 mg drospirenone, effectively inhibits ovulation, as demonstrated by measurement of plasma hormone levels (follicle stimulating hormone, luteinizing hormone, estradiol and progesterone), and echographic evaluation of follicular ripening. Like other low-dose oral contraceptives, the combination of ethinylestradiol and drospirenone markedly limits cervical function, spinnbarkeit and degree of crystallization, resulting in a hostile environment for sperm penetration. Two large, randomized, multicenter, open-label clinical studies have compared the contraceptive efficacy of ethinylestradiol/drospirenone with that of Marvelon, a well-established contraceptive containing 30 microg ethinylestradiol plus 150 microg desogestrel. Both preparations provided effective contraception and good cycle control. There were no negative effects on hemostatic parameters, lipids and carbohydrate metabolism. However, in both studies, ethinylestradiol/drospirenone had a more favorable effect on body weight than ethinylestradiol/desogestrel, with mean body weight remaining lower in the ethinylestradiol/ drospirenone group, the difference between the two preparations being statistically significant. Pre-existing acne and seborrhea were improved by ethinylestradiol/ drospirenone and blood pressure was essentially unchanged. These studies show that ethinylestradiol/drospirenone provides effective oral contraception, excellent cycle control and good tolerability, with effects on body weight and skin condition that are likely to confer a significant beneficial effect on compliance, especially in women with a tendency to gain weight under oral contraceptives due to water retention. [less ▲]

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See detailProtection fongicide intégrée au mode de conduire de la culture. Exemple du blé en Belgique
Bodson, Bernard ULg; Meeùs, Patrick; Moreau, Jean-Marc et al

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

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