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See detailIncidence des aménagements hydrauliques sur le contrôle du développement de la bilharziose (shistosomiase)
Pliez, A.; Moens, R.; Debouche, Charles ULg

in Annales de Gembloux (1994), (100), 53-65

Le développement des irrigations dans les zones tropicales et subtropicales du monde, pour augmenter les productions de nourriture, a provoqué la prolifération de maladies liées à l'eau comme la ... [more ▼]

Le développement des irrigations dans les zones tropicales et subtropicales du monde, pour augmenter les productions de nourriture, a provoqué la prolifération de maladies liées à l'eau comme la bilharziose (également appelée shistosomiase), la dengue, la filariose et l'onchocercose. [less ▲]

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See detailIdentification Of Distinct Potyviruses In Mixedly-Infected Sweet-Potato By The Polymerase Chain-Reaction With Degenerate Primers
Colinet, D.; Kummert, J.; Lepoivre, Philippe ULg et al

in Phytopathology (1994), 84(1),

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See detailGelatinase A expression and localization in human breast cancers. An in situ hybridization study and immunohistochemical detection using confocal microscopy.
Polette, M.; Gilbert, N.; Stas, I. et al

in Virchows Archiv : An International Journal of Pathology (1994), 424

The gelatinase A (72 kDa type IV collagenase) is a matrix metallo-proteinase which degrades basement membrane collagens. Various studies emphasize its role in stromal invasion of cancers, but there is ... [more ▼]

The gelatinase A (72 kDa type IV collagenase) is a matrix metallo-proteinase which degrades basement membrane collagens. Various studies emphasize its role in stromal invasion of cancers, but there is some controversy about its origin. Gelatinase A was localized by immunohistochemistry using confocal microscopy in 15 human mammary carcinomas. In addition, the cells responsible for the synthesis of this enzyme were detected by in situ hybridization. Most invasive and non-invasive tumour cells were labelled by immunohistochemistry. Of particular interest was the pattern observed in some pre-invasive areas. Gelatinase A was found in fibroblasts in close contact with pre-invasive tumour clusters. Confocal observation allowed a more precise localization of gelatinase A to the periphery of tumour clusters along the basement membranes and in peritumour fibroblasts. The malignant epithelial cells were negative by immunohistochemistry in these areas. By in situ hybridization, mRNAs encoding gelatinase A were detected only in fibroblasts in close contact with pre-invasive and well differentiated tumour clusters. These findings support the hypothesis that peritumour fibroblasts produce gelatinase A and that breast cancer cells may bind this enzyme to their cell surface and/or internalize it. [less ▲]

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See detailProtection du vendeur : les garanties légales et conventionnelles
Gosselin, Antoinette ULg

in Actualités du Droit (1994), (4), 933-972

The contribution envisages the protection of the seller as part of the cession of a firm in return for remuneration, giving rise to the payment of a price in exchange for the transfer of ownership. Sale ... [more ▼]

The contribution envisages the protection of the seller as part of the cession of a firm in return for remuneration, giving rise to the payment of a price in exchange for the transfer of ownership. Sale can concern a business or a number of actions or parts representative of an important party of the capital allowing to acquire the control of the society. The first party examines the lawful protection of the giving up, the second conventional guarantees in which giving it up can think to protect itself against the nonpayment of price by the seller. [less ▲]

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See detailRound Table Conference on Mediators of Sepsis--Brussels, Belgium, March 21-23, 1992
Lamy, Maurice ULg; Thijs, L. G.

in Intensive Care Medicine (1994), 20(3), 238-41

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See detailBehavioural study of hybridization between Barbus barbus and Barbus meridionalis
Poncin, Pascal ULg; Jeandarme, J.; Berrebi, P.

in Journal of Fish Biology (1994), 45

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See detailLes transplantations de cellules de Schwann syngéniques dans les lésions médullaires: résultats, limitations et perspectives
Martin, Didier ULg

in Bulletin et Mémoires de l'Académie Royale de Médecine de Belgique (1994), 149(5-7), 279-89289-91

After a central nervous system (CNS) injury, there is only an "abortive regeneration" of axons, while injured axons regenerate vividly in the peripheral nervous system (PNS). This difference is due, at ... [more ▼]

After a central nervous system (CNS) injury, there is only an "abortive regeneration" of axons, while injured axons regenerate vividly in the peripheral nervous system (PNS). This difference is due, at least in part, to the existence in the periphery of Schwann cells and of growth promoting proteins they synthetize. One strategy to promote regrowth of central axons can be therefore, to modify (i.e. "peripheralize") the microenvironment by transplanting biologically active Schwann cells into the lesion site. In a rat model of traumatic paraplegia by inflation of a subdural microballoon, we performed syngeneic transplants of Schwann cells. These cells are cultured from adult dorsal root ganglia and can be kept in vitro for several months. They are transplanted in the injured spinal cord. The grafted Schwann cells are well integrated in the host tissue without detectable inflammatory reaction. Cystic cavitation and astrogliosis are reduced in grafted animals as compared to injured, non-grafted animals. The transplant is invaded by abundant, mainly unmyelinated axons which are immunoreactive for substance P, VIP or CGRP, i.e. transmitters known to be present in DRG afferents. Supraspinal afferents containing 5HT, TH or CCK accumulate at the rostral margin of the graft. Experimental procedures trying to stimulate the invasion of the graft by descending fibers, i.e. by inducing a chemoattraction are therefore of crucial importance for functional recovery. [less ▲]

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See detailLe Marquis et les castrats. Note sur un tabou sadien
Durand, Pascal ULg

in Art&Fact (1994), 13

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See detailProtection of the small bowel with a silicone tissue expander prosthesis and a polyglycolic acid mesh during radiation therapy for cervical carcinoma
Delaloye, J-F; Cuttat, J-F; COUCKE, Philippe ULg et al

in British Journal of Obstetrics & Gynaecology (1994), 101

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See detailMechanism of Thiamine Transport in Neuroblastoma Cells. Inhibition of a High Affinity Carrier by Sodium Channel Activators and Dependence of Thiamine Uptake on Membrane Potential and Intracellular Atp
Bettendorff, Lucien ULg; Wins, Pierre

in Journal of Biological Chemistry (1994), 269(20), 14379-14385

Nerve cells are particularly sensitive to thiamine deficiency. We studied thiamine transport in mouse neuroblastoma (Neuro 2a) cells. At low external concentration, [14C]thiamine was taken up through a ... [more ▼]

Nerve cells are particularly sensitive to thiamine deficiency. We studied thiamine transport in mouse neuroblastoma (Neuro 2a) cells. At low external concentration, [14C]thiamine was taken up through a saturable high affinity mechanism (Km = 35 nM). This was blocked by low concentrations of the Na+ channel activators veratridine (IC50 = 7 +/- 4 microM) and batrachotoxin (IC50 = 0.9 microM). These effects were not antagonized by tetrodotoxin and were also observed in cell lines devoid of Na+ channels, suggesting that these channels are not involved in the mechanism of inhibition. At high extracellular concentrations, thiamine uptake proceeds essentially via a low affinity carrier (Km = 0.8 mM), insensitive to veratridine but blocked by divalent cations. In both cases, the uptake was independent on external sodium, partially inhibited (10-35%) by depolarization and sensitive to metabolic inhibitors. A linear relationship between the rate of thiamine transport and intracellular ATP concentration was found. When cells grown in a medium of low thiamine concentration (6 nM) were exposed to 100 nM extracellular thiamine, a 3-fold increase in intracellular thiamine diphosphate was observed after 2 h while the concomitant increase in intracellular free thiamine was barely significant. These data suggest a secondary active transport of thiamine, the main driving force being thiamine phosphorylation rather than the sodium gradient. [less ▲]

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See detailDistribution of POC, PON and particulate Al, Cd, Cr, Cu, Pb, Ti, Zn and deltaC13 in the English Channel and adjacent areas
Dauby, Patrick ULg; Frankignoulle, Michel; Gobert, Sylvie ULg et al

in Oceanologica Acta (1994), 17(6), 643-657

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See detailInactivation of alpha(2)-Macroglobulin by Activated Human Polymorphonuclear Leukocytes.
Deby, Ginette ULg; Croisier, Jean-Louis ULg; Camus, Gérard et al

in Mediators of Inflammation (1994), 3(2), 117-23

The proteolytic activity of trypsin releases the dye Remazol Brilliant Blue from its high molecular weight substrate, the skin powder (Hide Powder Azure, Sigma), with an increase in absorbance at 595 nm ... [more ▼]

The proteolytic activity of trypsin releases the dye Remazol Brilliant Blue from its high molecular weight substrate, the skin powder (Hide Powder Azure, Sigma), with an increase in absorbance at 595 nm. Active alpha(2)- macroglobulin (80 mug/ml) totally inhibits the proteolytic activity of trypsin (14 mug/ml) by trapping this protease. But after a 20 min incubation of alpha(2)-macroglobulin at 37 degrees C with 2 x 10(6) human polymorphonuclear leukocytes activated by N-formyl-L-methionyl-L-leucyl-L-phenylalanine (10(-7) M) and cytochalasin B (10(-8) M), 100% of trypsin activity was recovered, indicating a total inactivation of alpha(2)-macroglobuHn. Incubation with granulocyte myeloperoxidase also inactivates alpha(2)-macroglobulin. Hypochlorous acid, a by-product of myeloperoxidase activity, at a concentration of 10(-7) M also inactivates alpha(2)-macroglobulin, which indicates that an important cause of alpha(2)-macroglobulin inactivation by activated polymorphonuclear leukocytes could be the activity of myeloperoxidase. [less ▲]

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See detailNatural-Convection Above Line Heat-Sources In Greenhouse Canopies
Aubinet, Marc ULg; Deltour, Jules

in International Journal of Heat and Mass Transfer (1994), 37(12),

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See detailA case of tracheal fibrolipoma.
Baharloo, F; CORHAY, Jean-Louis ULg; Hotermans, G et al

in Acta Clinica Belgica (1994), 49(1), 23-5

We report the case of a tracheal fibrolipoma in a 40-year-old man successfully treated by laser photocoagulation. The clinical and pathological aspects, as well as the therapeutical options of this rare ... [more ▼]

We report the case of a tracheal fibrolipoma in a 40-year-old man successfully treated by laser photocoagulation. The clinical and pathological aspects, as well as the therapeutical options of this rare upper airway benign tumor are discussed. [less ▲]

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See detailResonance transitions in Neutral Chlorine
Biémont, Emile ULg; Gebarowski, R.; Zeippen, C. J.

in Astronomy and Astrophysics. Supplement Series (1994), 287

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See detailEfficacité de la radiothérapie pour le traitement des récidives en gynécologie oncologique
COUCKE, Philippe ULg; Sartorelli, B

in Revue Médicale de la Suisse Romande (1994), 114(9), 799-804

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See detailCréer un programme de formation pour des professionnels de la Petite Enfance en Communauté germanophone de Belgique. Un enjeu pour le développement de la qualité de service.
Pirard, Florence ULg

in La Lettre. Formation. Développement local. L'accueil de la petite enfance: évaluation (1994), 3

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See detailCalcitropic effect of recombinant prolactins in Oreochromis mossambicus
Flik, G.; Rentier-Delrue, Françoise ULg; Wendelaar-Bonga, S. E.

in The American Physiological Society (1994)

Homologous recombinant tilapia prolactins 1 and 2 were tested for calcitropic activity in tilapia Oreochromis mossambicus. Injection of both PRLs induced hypercalcemia that resulted for an enhanced ... [more ▼]

Homologous recombinant tilapia prolactins 1 and 2 were tested for calcitropic activity in tilapia Oreochromis mossambicus. Injection of both PRLs induced hypercalcemia that resulted for an enhanced calcium influx via the gills and a decreased calcium efflux. Both PRLs increased the density of the Ca2+-transporting Ca2+-adenosinetriphosphatase in a plasma membrane preparation of the branchial epithelium. Dose-response studies demonstrated that the PRL-1 was roughly twofold more potent than PRL2 in inducing hypercalcemia, in enhacing basal levels of cortisol and in stimulating opercular ionocyte density. But both PRL were equipotent in stimulating the dermal mucocyte frequency. [less ▲]

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See detailAspects of the ecology of the wood-inhabiting fungi of Laing Island (Papua New Guinea)
Castillo Cabello, Gabriel ULg; Demoulin, Vincent ULg

in Belgian Journal of Botany (1994)

Dans le cadre d'une étude sur l'écologie des champignons lignicoles de l'île de Laing (Papouasie Nouvelle-Guinée), les espèces les plus fréquemment rencontrées (en particulier: Schizophyllum commune ... [more ▼]

Dans le cadre d'une étude sur l'écologie des champignons lignicoles de l'île de Laing (Papouasie Nouvelle-Guinée), les espèces les plus fréquemment rencontrées (en particulier: Schizophyllum commune, Daldinia eschscholzii et Trametes scabrosa) ont été cartographiées. Les résultats montrent qu'il existe une bonne corrélation entre le type de répartition des champignons et le degré de couverture végétale. In the framework of a study of the ecology of wood-inhabiting fungi on Laing Island (Papua New-Guinea), the most frequently occurring species (namely Schizophyllum commune, Daldinia eschscholzii and Trametes scabrosa) were mapped. The results show a good correlation between the distribution of the fungi and the degree of vegetation cover. [less ▲]

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See detailOù peut-on planter l’aulne glutineux avec succès ?
Claessens, Hugues ULg

in Silva Belgica (1994), 101

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See detailAssignment of the human ZNF83 (HPF1) zinc finger gene to chromosome 19q13.3-q13.4
Marine, Jean-Christophe; Bellefroid, Eric J.; Bourguignon, Catherine et al

in Genomics (1994), 21(1), 285-6

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See detailUtilisation du milieu et étude du dommaine vital chez le martin pêcheur en période de reproduction
Loncin, Anne; Libois, Roland ULg

in Aves (1994), 31(2-3-4), 197-198

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See detailCircadian rhythms and the induction of flowering in the long-day grass Lolium temulentum L.
Périlleux, Claire ULg; Bernier, Georges ULg; Kinet, Jean Marie

in Plant, Cell & Environment (1994), 17(6), 755-761

Plants of Lolium temulentum L. strain Ceres were grown in 8-h short day (SD) for 45 d before being exposed either to a single long day (LD) or to a single 8-h SD given during an extended dark period. For ... [more ▼]

Plants of Lolium temulentum L. strain Ceres were grown in 8-h short day (SD) for 45 d before being exposed either to a single long day (LD) or to a single 8-h SD given during an extended dark period. For LD induction, the critical photoperiod was between 12 and 14 h, and more than 16 h were needed for a maximal flowering response. During exposure to a single 24-h LD, the translocation of the floral stimulus began between the fourteenth and the sixteenth hours after the start of the light period, and was completed by the twenty-fourth hour. Full flowering was also induced by one 8-h SD beginning 4 or 28 h after the start of a 40-h dark period, i.e. by shifting 12 h forward or beyond the usual SD. The effectiveness of a so-called 'displaced short day' (DSD) was not affected by light quality and light intensity. With a mixture of incandescent and fluorescent lights at a total photosynthetic photon flux density of 400 µmol m-2 s-1, a 4-h light exposure beginning 4 h after the start of a 40-h dark period was sufficient to induce 100 flowering. The flower-inducing effect of a single 8-h DSD was also assessed during a 64-h dark period. Results revealed two maxima at a 20-h interval. This fluctuation in light sensitivity suggests that a circadian rhythm is involved in the control of flowering of L. temulentum. [less ▲]

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See detailDifferential diagnosis of Alzheimer's disease with PET.
Salmon, Eric ULg; Sadzot, Bernard ULg; Maquet, Pierre ULg et al

in Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine (1994), 35(3), 391-8

PET studies have demonstrated bilateral temporo-parietal hypoperfusion and hypometabolism in probable and definite Alzheimer's disease (AD), a pattern that may help differentiate AD from other dementias ... [more ▼]

PET studies have demonstrated bilateral temporo-parietal hypoperfusion and hypometabolism in probable and definite Alzheimer's disease (AD), a pattern that may help differentiate AD from other dementias. METHODS: To evaluate the diagnostic power of cerebral metabolic distribution patterns for "cortical" degenerative dementias, PET scans obtained from 129 patients referred for differential diagnosis of dementia were analyzed visually. RESULTS: Sixty-five patients had a final clinical diagnosis of probable AD. Ninety-seven percent (97%) of those had abnormal metabolic scans and 94% showed a suggestive pattern of bilateral or unilateral temporo-parietal hypometabolism (with or without frontal involvement). Hypometabolism was unilateral in 23% of patients. Five subjects with a neuropathologically proven diagnosis of Alzheimer's disease had a suggestive metabolic pattern. One of those was an early case with frontal hypometabolism exceeding temporo-parietal involvement. Two patients with Alzheimer's-type dementia had isolated bilateral frontal hypometabolism. CONCLUSIONS: This alternative metabolic pattern may correspond to a non-Alzheimer pathology occurring in 10%-20% of patients suffering from clinically probable Alzheimer's disease. Most of the patients with possible but atypical Alzheimer's-type dementia showed isolated bilateral frontal involvement. This metabolic pattern probably corresponds to different diseases, such as Pick's disease, frontal lobe dementia or progressive subcortical gliosis. [less ▲]

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See detailLes dommages dus aux plans et leur indemnisation dans le cadre du CWATUP
Delnoy, Michel ULg

in Aménagement - Environnement (1994), 3

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See detailA thyroid hormone receptor-dependent glucocorticoid induction.
Leers, Joerg; Steiner, Christoff; Renkawitz, Rainer et al

in Molecular Endocrinology (Baltimore, Md.) (1994), 8(4), 440-7

Glucocorticoid and thyroid hormones exert their effects in many body tissues by binding to their respective receptors. The search for possible cross-talking mechanisms in overlapping target cells led to ... [more ▼]

Glucocorticoid and thyroid hormones exert their effects in many body tissues by binding to their respective receptors. The search for possible cross-talking mechanisms in overlapping target cells led to the discovery of synergism between a thyroid hormone receptor-binding site and a cryptic glucocorticoid-responsive element. Glucocorticoid responsiveness could only be detected in the presence of thyroid hormone and its receptor. This synergism requires the glucocorticoid receptor (GR) DNA-binding domain and is mediated by the transactivation domains. We found that synergism also occurs when the thyroid hormone receptor is replaced by the retinoic acid receptor or the GR is replaced by the progesterone receptor. Synergism is qualitatively independent of the type of thyroid hormone receptor-binding site and promoter. In several combinations of promoter and response elements, including a retinoic acid response element, T3 induction was only seen in the presence of the cryptic glucocorticoid-responsive element, GR, and glucocorticoids. [less ▲]

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See detailEloge de Marcel Migeotte (1912-1992)
Biémont, Emile ULg

in Bulletin de la Classe des Sciences. Académie Royale de Belgique (1994), V(6), 271-278

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See detailObservations de coupes dans la terrasse T3 dans la vallée du Niger en aval de Niamey
Willems, Luc ULg; Bergoing, Jean-Pierre

in Revue de Géographie Alpine (1994), 5

Dans la région de Niamey, l'étendue et le nombre d'affleurements du complexe T3, appelé aussi terrasse moyenne, permettent de dresser une chronologie relative des événements climatiques survenus dans la ... [more ▼]

Dans la région de Niamey, l'étendue et le nombre d'affleurements du complexe T3, appelé aussi terrasse moyenne, permettent de dresser une chronologie relative des événements climatiques survenus dans la région durant son édification. Une étude systématique révèle une grande diversité dans les dépôts souvent assimilable aux variations locales de sédimentation. Cependant, cinq épisodes majeurs dans l'édification du complexe peuvent être dégagés et correspondent à autant de fluctuations climatiques durant une période qui s'étendrait de 20 000 à 12 000 BP. La découverte et l'observation de diaclases ainsi que des phénomènes de soutirage dans les dépôts pléistocènes montrent le rôle important qu'a pu jouer la fracturation du socle birrimien sur l'ensemble de la morphologie actuelle de la région de Niamey, en particulier sur le réseau hydrographique. [less ▲]

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See detailA comparative study of reporter gene activities in fish cells and embryos
Sekkali, B.; Hellemans, B.; Belayew, A. et al

in Molecular Marine Biology and Biotechnology (1994), 3

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See detailANOMALOUS PERTURBATIVE TRANSPORT IN TOKAMAKS DUE TO DRIFT-ALVEN-WAVE TURBULENCE
Thoul, Anne ULg; SIMILON, P. L.; SUDAN, R. N.

in Physics of Plasmas (1994), 1(3), 601-608

The method developed in Thoul, Similon, and Sudan [Phys. Plasmas 1, 579 (1994)] is used to calculate the transport due to drift-Alfven-wave turbulence, in which electromagnetic effects such as the ... [more ▼]

The method developed in Thoul, Similon, and Sudan [Phys. Plasmas 1, 579 (1994)] is used to calculate the transport due to drift-Alfven-wave turbulence, in which electromagnetic effects such as the fluttering of the magnetic field lines are important. Explicit expressions are obtained for all coefficients of the anomalous transport matrix relating particle and heat fluxes to density and temperature gradients in the plasma. Although the magnetic terms leave the transport by trapped electrons unaffected, they are important for the transport by circulating electrons. [less ▲]

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See detailL'éthique en ses terres amères
Vrancken, Didier ULg

in Education Permanente (1994), 121

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See detailLe chylothorax et son traitement
Detry, Olivier ULg; Dekoster, Guy ULg; Limet, Anne ULg

in Lyon Chirurgical (1994), 90(1), 38-44

Chylothorax is an unfrequent pathology defined by fistula between the thoracic duct and one of the pleura. Its spontaneous evolution is worse, with respiratory failure in the acute phase. After a few days ... [more ▼]

Chylothorax is an unfrequent pathology defined by fistula between the thoracic duct and one of the pleura. Its spontaneous evolution is worse, with respiratory failure in the acute phase. After a few days of thoracic tube drainage, hemodynamic, nutritional and immunologic disturbances appear. Since the first thoracic duct ligature by Lampson in 1948, surgical approach has obviously reduced the morbidity and mortality of chylothorax. The new development of the thoracoscopic techniques will allow earlier and less aggressive surgical treatment. However, thoracic surgeons must keep in mind that every intrathoracic operation could induce chylothorax, especially in case of posteriror mediastinal surgery. Chylothorax must be evocated if unusually profuse milky pleural effusion complicate this type of procedure. We discribe the anatomy and the physiology of chylous circulation and we discuss the etiologies and the different therapeutic approaches of chylothorax. [less ▲]

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See detailEpidemiological evaluation of a monoclonal ELISA detecting antibodies against bovine leukaemia virus in serum pools.
Knapen, K.; Kerkhofs, P.; Thiry, Etienne ULg et al

in Epidemiology & Infection (1994), 113(3), 563-9

Sensitivity, specificity and predictive values of an enzyme-linked immunosorbent assay (ELISA) for detecting antibodies against bovine leukaemia virus (BLV) were evaluated using a representative sample of ... [more ▼]

Sensitivity, specificity and predictive values of an enzyme-linked immunosorbent assay (ELISA) for detecting antibodies against bovine leukaemia virus (BLV) were evaluated using a representative sample of 145 serum pools, comprising from 3 to 48 individual sera. The sample was constituted according to the frequency distribution of the negative and positive pools analysed during a screening involving the whole cattle population of Belgium. Sensitivity and specificity were estimated to 88.9% and 100% and the predicted negative and positive values were 99.9% and 100%, respectively. These results indicate the use of serum pools is suitable for the detection of BLV infected herds in eradication campaigns. [less ▲]

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See detailLa monadologie, une théorie de la communication basée sur l'opacité?
Bouquiaux, Laurence ULg

in Réseaux : Revue Interdisciplinaire de Philosophie Morale et Politique (1994)

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See detailPolitical Aesthetics: Cross-Cultural Desire and the Capitulation of Form in the Work of Kazuo Ishiguro and Salman Rushdie
Delrez, Marc ULg

in BELL. Belgian Essays on Language and Literature (1994)

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See detailBénard-Marangoni instability in a viscoelastic Jeffreys' fluid layer
Lebon, Georgy ULg; Parmentier, Patrice; Teller, O. et al

in Rheologica Acta (1994), 33(4), 257-266

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See detailPole, albedo and shape of the minor planets 624 Hektor and 43 Ariadne: Two tests for comparing four different pole determination methods
Detal, Alain ULg; Hainaut, O.; Pospieszalska-Surdej, A. et al

in Astronomy and Astrophysics (1994), 281

Asteroids 624 Hektor and 43 Ariadne have been observed photometrically at the European Southern Observatory (La Silla, Chile) in order to determine their pole orientation. The lightcurves (1984 and 1991 ... [more ▼]

Asteroids 624 Hektor and 43 Ariadne have been observed photometrically at the European Southern Observatory (La Silla, Chile) in order to determine their pole orientation. The lightcurves (1984 and 1991 oppositions for Hektor, and 1985 for Ariadne) are presented. Some of the traditional pole determination methods have been improved, and completely original ones have been developed. They are described and applied to the newly recorded and previously published light curves. The results are commented and compared with previous ones. In addition to the pole orientation, we also derive some information on the shape or the albedo distribtuion of the objects. With the aim of optimizing future observations of these asteroids, we present some graphs showing the best longitudes where they should be measured. Finally, we suggest some improvements in the pole determination and modeling methods based upon photometric data. [less ▲]

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See detailSpecific DNA probes to detect Escherichia coli strains producing cytotoxic necrotising factor type 1 or type 2
Oswald, E.; Pohl, P.; Jacquemin, E. et al

in Journal of Medical Microbiology (1994), 40

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See detailEFFECTS OF ELECTROKINETIC CHARACTERISTICS ON THE FORMATION OF A PROTEIN MICROCRYSTALLINE CELLULOSE COMPLEX
Paquot, Michel ULg; GODIN, F.; Dumont de chassart, Q.

in Lebensmittel-Wissenschaft & -Technologie = Food Science & Technology (1994), 27(1), 11-15

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See detailAnalyses de sols et gestion de l'espace
Bock, Laurent ULg

in Etude et Gestion des Sols (1994), 1(1), 23-33

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See detailCLOE, A NEW RATE-TYPE CONSTITUTIVE MODEL FOR GEOMATERIALS THEORETICAL BASIS AND IMPLEMENTATION
CHAMBON, René; DESRUES, Jacques; HAMMAD, Wallid et al

in International Journal for Numerical and Analytical Methods in Geomechanics (1994), 18(4), 253-278

The paper describes the basic ideas and the main features of a new class of constitutive laws, in the framework of incrementally non-linear constitutive equations. CLoE is a generic name for that new ... [more ▼]

The paper describes the basic ideas and the main features of a new class of constitutive laws, in the framework of incrementally non-linear constitutive equations. CLoE is a generic name for that new class of laws, with reference to consistency at the limit surface, and explicit localization analysis. A top-down analysis of the model is presented, and illustrated by examples. [less ▲]

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See detailThymus Involvement in Murine Acquired Immunodeficiency (Maids)
Colombi, Sonia; Deprez, Manuel ULg; de Leval, Laurence ULg et al

in Thymus (1994), 23(1), 27-37

Due to self-renewal of the peripheral pool of T-cells, adult thymectomy has normally little influence on immunocompetence. However, thymus might play a more important role in the setting of viral-induced ... [more ▼]

Due to self-renewal of the peripheral pool of T-cells, adult thymectomy has normally little influence on immunocompetence. However, thymus might play a more important role in the setting of viral-induced cytopathic effects on T-cells in the periphery. Therefore, thymus weight, cell numbers, and subset distribution were sequentially analysed after infection with RadLV-Rs, a viral mixture known to induce murine retrovirus induced immunodeficiency (MAIDS). Infection induced thymic atrophy (concerning organ weight as well as total cell number) which culminated seven weeks after inoculation. The atrophic process mostly reflected the depletion of double positive CD4+ CD8+ cells since their proportion sharply decreased around week 6. Single positive T-cells were less affected by the process. The proportion of B-cells progressively increased. Surprisingly, there was a strong correlation between the extent of atrophy and the frequency of B-cells in the thymus. Finally, an abnormal CD4+ T-cell subset lacking Thy-1 and previously described in the periphery also appeared in the thymus and its frequency was strongly correlated with the expansion of B-cells in this organ. [less ▲]

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See detailModification of immunoreactive EGF receptor after acute tubular necrosis induced by tobramycin or cisplatin
Leonard, I.; Zanen, J.; Nonclercq, D. et al

in Renal Failure (1994), 16(5), 583-608

Acute tubular necrosis induced by aminoglycoside antibiotics and various other nephrotoxins is followed by a regenerative process which leads to the restoration of damaged tubules. Several lines of ... [more ▼]

Acute tubular necrosis induced by aminoglycoside antibiotics and various other nephrotoxins is followed by a regenerative process which leads to the restoration of damaged tubules. Several lines of evidence indicate that tubular regeneration is mediated by polypeptide growth factors such as epidermal growth factor (EGF). Previous studies devoted to cisplatin nephrotoxicity have shown that this agent causes tubular cystic degeneration possibly related to an impairment of renal tissue repair. Thus, we examined on a comparative basis the time course of the regenerative response subsequent to tubular damage induced by tobramycin or cisplatin, particular attention being paid to renal EGF and its receptor. Female Sprague-Dawley rats (160-180 g body weight) were treated during 4 consecutive days with daily doses of 200 mg/kg tobramycin i.p. (BID) or 2 mg/kg cisplatin (once a day). Sham-treated rats were given 0.9% NaCl i.p. following the same protocol. Groups of experimental animals (n = 5-10) were terminated at increasing time intervals (1, 4, 7, 14, 21, 60 days) after cessation of treatment. One hour prior to sacrifice, each individual received i.p. 200 mg/kg 5-bromo-2'-deoxyuridine (BrdU) for the immunohistochemical demonstration of cell proliferation. Blood was collected at the time of sacrifice in order to assess glomerular filtration rate by measuring serum creatinine and BUN levels. Kidneys were analyzed with respect to total EGF determined by RIA in renal tissue homogenates, and soluble EGF was assayed in extracts prepared by centrifugation. Renal tissue was processed for the immunohistochemical detection of S-phase cells, of EGF, of EGF receptors, and of the intermediate filament vimentin, the latter being used as a marker of epithelium dedifferentiation. In absence of nephrotoxic alterations, EGF was immunolocalized in distal tubules, whereas EGF receptor immunostaining was seen in proximal tubules cells. Vimentin immunostaining was confined to glomeruli and blood vessels. Tobramycin and cisplatin caused acute tubular necrosis in proximal convoluted tubules and proximal straight tubules, respectively. Tissue damage was accompanied by renal dysfunction reflected by an elevation of serum creatinine and BUN levels. Tubular necrosis was followed by a proliferative response indicative of tubular regeneration. Regenerative hyperplasia was associated with a reduction of total immunoreactive EGF due to a decrease of tissue-bound proEGF. Tubules undergoing regenerative repair were characterized by a disappearance of EGF receptors and the presence of immunoreactive vimentin. In tobramycin-treated rats, renal dysfunction lasted for 4-7 days and was fully reversible, as indicated by the return of serum markers to normal values. [less ▲]

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See detailLe passage à la paternité: une approche clinique
Naziri, Despina ULg; Dragonas, Th.

in Psychiatrie de l'Enfant (La) (1994), 37(2), 601-629

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See detailGénétique moléculaire des récepteurs olfactifs
Parmentier, M.; Vanderhaeghen, P.; Schurmans, Stéphane ULg et al

in Medecine Sciences : M/S (1994), 10

Les gènes codant pour les récepteurs olfactifs ont été isolés à partir d'une banque d'ADNc de la muqueuse olfactive. Ils constituent une famille très étendue (plusieurs centaines de gènes) codant pour des ... [more ▼]

Les gènes codant pour les récepteurs olfactifs ont été isolés à partir d'une banque d'ADNc de la muqueuse olfactive. Ils constituent une famille très étendue (plusieurs centaines de gènes) codant pour des récepteurs à sept passages transmembranaires couplés, par l'intermédiaire de protéines G, à l'activation de l'adénylyl cyclase et de la phospholipase C. La grande diversité des récepteurs olfactifs réside surtout dans les domaines transmembranaires III, IV, V et VI, qui portent les sites de liaison des ligands, les molécules odorantes, et répond sans doute à la diversité des ligands [less ▲]

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See detailFactors influencing between-laboratory variability of C-reactive protein results as evidenced by the Belgian External Quality Assessement (EQA) Scheme
Devleeschouwer, N.; Libeer, J. C.; Chapelle, Jean-Paul ULg et al

in Scandinavian Journal of Clinical & Laboratory Investigation (1994), 54(6), 435-40

Based on results from the Belgian External Quality Assessment (EQA) Scheme, we studied the main factors affecting the between-laboratory variation of C-reactive protein determination. Participants using ... [more ▼]

Based on results from the Belgian External Quality Assessment (EQA) Scheme, we studied the main factors affecting the between-laboratory variation of C-reactive protein determination. Participants using homogeneous systems with several calibration points generally achieved better performance. Working temperatures influenced the results to a lesser extent. The present study stresses the importance for EQA organizers to collect more detailed information about CRP analytical methods used by the participants. It also suggests that manufacturers should be more involved in the management of quality, in particular by striving for standardization of the material (kit and calibrator) they produce for CRP assay. [less ▲]

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See detailThe Compartmentation of Phosphorylated Thiamine Derivatives in Cultured Neuroblastoma Cells
Bettendorff, Lucien ULg

in Biochimica et Biophysica Acta (1994), 1222(1), 7-14

Thiamine transport in cultured neuroblastoma cells is mediated by a high-affinity carrier (KM = 40 nM). In contrast, the uptake of the more hydrophobic sulbutiamine (isobutyrylthiamine disulfide) is ... [more ▼]

Thiamine transport in cultured neuroblastoma cells is mediated by a high-affinity carrier (KM = 40 nM). In contrast, the uptake of the more hydrophobic sulbutiamine (isobutyrylthiamine disulfide) is unsaturable and its initial transport rate is 20-times faster than for thiamine. In the cytoplasm, sulbutiamine is rapidly hydrolyzed and reduced to free thiamine, the overall process resulting in a rapid and concentrative thiamine accumulation. Incorporation of radioactivity from [14C]thiamine or [14C]sulbutiamine into intracellular thiamine diphosphate is slow in both cases. Despite the fact that the diphosphate is probably the direct precursor for both thiamine monophosphate and triphosphate, the specific radioactivity increased much faster for the latter two compounds than for thiamine diphosphate. This suggests the existence of two pools of thiamine diphosphate, the larger one having a very slow turnover (about 17 h); a much smaller, rapidly turning over pool would be the precursor of thiamine mono- and triphosphate. The turnover time for thiamine triphosphate could be estimated to be 1-2 h. When preloading the cells with [14C]sulbutiamine was followed by a chase with the same concentration of the unlabeled compound, the specific radioactivities of thiamine and thiamine monophosphate decreased exponentially as expected, but labeling of the diphosphate continued to increase slowly. Specific radioactivity of thiamine triphosphate increased first, but after 30 min it began to slowly decrease. These results show for the first time the existence of distinct thiamine diphosphate pools in the same homogeneous cell population. They also suggest a complex compartmentation of thiamine metabolism. [less ▲]

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See detail2,7-dihydroapogeissoschizine from root bark of strychnos Gossweileri
Quetin-Leclercq, Joëlle; Dive, Georges ULg; Delaude, Clément et al

in Phytochemistry (1994), 35(2), 533-536

In this paper, we describe the isolation and structural determination of 2,7-dihydroxyapogeissoschizine, a new alkaloid from the root bark of Strychnos gossweileri. Elucidation of its structure is based ... [more ▼]

In this paper, we describe the isolation and structural determination of 2,7-dihydroxyapogeissoschizine, a new alkaloid from the root bark of Strychnos gossweileri. Elucidation of its structure is based mainly on 1D and 2D NMR studies; its conformation was optimized by energy minimization. This type of skeleton is related to geissoschizine but with the notable diffrence that the 1 and 17 positions are joined giving an additional fused ring. Such a seven-membered ring has ,to our knowledge, only been observed in apogeissoschizine, obtained after chemical tratment of two alkaloids ( geissospermine and geissoschizine). 2,7-dihydroxyapogeissoschizine is therefore, the first natural product possessing this skeleton. According to a preliminary test, this new alkaloid shows low toxicity to B16 melanoma cells, but not for non-cancer 3T3 fibroblasts cultured in vitro.THese results have to be confirmed by further tests. [less ▲]

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See detailPhenotypic heterogeneity of the fibroblast-like cells in the dermis
Pierard-Franchimont, Claudine ULg; Fazaa, B.; Benzarti, H. et al

in Giornale Internazionale di Dermatologia Pediatrica (1994), 6(1), 7-13

The fibroblast-like cell population of the dermis is heterogeneous. The name "fibroblast" appears to be out-dated and should be replaced by terms reflecting with precision the immunophenotype of the cells ... [more ▼]

The fibroblast-like cell population of the dermis is heterogeneous. The name "fibroblast" appears to be out-dated and should be replaced by terms reflecting with precision the immunophenotype of the cells. Among them, dendrocytes type I (Factor XIIIa - positive) and dendrocytes type II (CD34 - positive) are involved in a wealth of pathologic conditions. [less ▲]

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See detailComment on the paper "Oscillator Strengths for Some Systems with the ns2np ground-state configuration: II. Gallium Isoelectronic Sequence
Biémont, Emile ULg; Marcinek, R.; Migdalek, J. et al

in Journal of Physics : B Atomic Molecular & Optical Physics (1994), 27

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See detailLe contrôle de l'infection par le virus de la rhinotrachéite infectieuse bovine
Lemaire, Mylène; Pastoret, Paul-Pierre ULg; Thiry, Etienne ULg

in Annales de Médecine Vétérinaire (1994), 138

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See detailLes défis des familles recomposées
Guillaume, Jean-François ULg

in Observatoire : Revue d'Action Sociale & Médico-Sociale (1994), 6(novembre-décembre), 30-36

Dans un contexte de croissance des recompositions conjugales après divorce, la prise en charge des tâches parentales constitue un défi inédit, où il s'agit pour les uns de retrouver des repères bien ... [more ▼]

Dans un contexte de croissance des recompositions conjugales après divorce, la prise en charge des tâches parentales constitue un défi inédit, où il s'agit pour les uns de retrouver des repères bien connus, et pour les autres, d'imaginer un nouvel ordre éducatif. Une nouvelle histoire doit alors être créée, et dans ce "bricolage", chacun ne dispose pas des mêmes ressources pour trouver sa place. [less ▲]

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See detailChoix d'une nouvelle variete pour les zones cotonnieres meridionales du Zaire. Resultats des essais varietaux preliminaires.
Mergeai, Guy ULg; Ndungo, V.; Folo, A. et al

in Bulletin des Recherches Agronomiques de Gembloux (1994), 29(4),

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See detailOPTIMIZATION OF LIPASE-CATALYZED SYNTHESIS OF CITRONELLYL ACETATE IN SOLVENT-FREE MEDIUM
Fonteyn, Fabienne ULg; Blecker, Christophe ULg; Lognay, Georges ULg et al

in Biotechnology Letters (1994), 16(7), 693-696

Citronellol esterification catalyzed by Candida antarctica lipase is performed with high yields (74%) in a solvent-free medium. The use of dessicants gives a 10% yield enhancement and substrate excess ... [more ▼]

Citronellol esterification catalyzed by Candida antarctica lipase is performed with high yields (74%) in a solvent-free medium. The use of dessicants gives a 10% yield enhancement and substrate excess consumption by adding calculated amounts of acetic acid lead to a 80% pure citronellyl acetate. Quantities up to 100 ml are treated with success. [less ▲]

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See detailExperimental Models of Inflammatory Bowel Disease
Louis, Edouard ULg; Belaiche, Jacques ULg

in Acta Gastro-Enterologica Belgica (1994), 57(5-6, Sep-Dec), 306-9

Etiology of inflammatory bowel disease (IBD) is still unknown. A lot of experimental models of these diseases have been developed during the last years. They can be classified as spontaneous and induced ... [more ▼]

Etiology of inflammatory bowel disease (IBD) is still unknown. A lot of experimental models of these diseases have been developed during the last years. They can be classified as spontaneous and induced models. Spontaneous models are infectious, genetic or of unknown etiology. Induced models are infectious, immune-mediated, chemical or genetic. All these models share some characteristics with IBD. In general, they are characterized by a chronic inflammation of the gut, and often, this inflammation appears secondary to mucosal abnormalities leading to an abnormal immune and inflammatory response toward luminal material. The most interesting models are thus those that share not only clinical and pathological characteristics with IBD, but also early mucosal abnormalities. From that point of view, the nonsteroidal anti-inflammatory drug (NSAID) enteropathy is probably one of the most interesting model for Crohn's disease (CD). In effect, this model shares an early modification with CD, that is increased intestinal permeability. In animals NSAID enteropathy, the increased intestinal permeability appears early after NSAID administration and is followed by inflammatory lesions. These lesions seem to be secondary to the increased permeability and depend on intraluminal materials, such as alimentary antigens or bacterial fragments. A possible link between the increased permeability and the inflammatory lesions could be an abnormal immune and inflammatory response toward the intraluminal materials. If the increased intestinal permeability in CD was confirmed, the same mechanisms could be implicated in its pathophysiology. [less ▲]

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See detailA Dynamic Stiffness-Transfer Matrix Method for Forced Response Analysis of One-Dimensional Structures
Chen, S. L.; Golinval, Jean-Claude ULg; Géradin, Michel ULg

in Journal of Modal Analysis (1994), (Avril),

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See detailEffect of drying and long term conservation on bioremediation properties of Rhodococcus erythropolis.
Weekers, F.; Jacques, Ph.; Springael, D. et al

in Mededelingen - Faculteit Landbouwwetenschappen, Rijksuniversiteit Gent (1994), 62(4b),

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See detailThe Dissociative Electroionization of C2H2, C2D2 and C2HD. Investigation of the [C2H(D)]+ and [H(D)]+ Dissociation Channels. The (D)H-C2H(D) binding energy.
Davister, M.; Locht, Robert ULg

in Chemical Physics (1994), 189

The dissociative electroionization of C2H2 in the H+ and C2H+ dissociation channels has been extensively investigated in C2H2 and C2D2. The kinetic energy distributions and ionization efficiency curves of ... [more ▼]

The dissociative electroionization of C2H2 in the H+ and C2H+ dissociation channels has been extensively investigated in C2H2 and C2D2. The kinetic energy distributions and ionization efficiency curves of both species were examined in detail. The H(D)+ ion shows its lowest onset energy at 18.93+/-0.2 eV whereas the C2H+ is produced at 17.30+/-0.11 eV. For the H+-producing channel the kinetic energy (KE) versus the appearance energy (AE) diagram is obtained, extensively discussed and the bond dissociation energy D(H-C2H)= 5.33+/-0.23 eV is estimated. This value is compared and discussed with respect to the values found in the literature. Predissociation and dissociative autoionization are the dominant H+-producing mechanisms. At high electron energies doubly ionized states of C2H2 are involved. For C2H+, beside the threshold at 17.30+/0.11 eV a new onset at 18.27+/0.10 eV is observed. The ionization efficiency of the doubly ionized molecular ion is observed for the first time in C2HD isotopic species. [less ▲]

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See detailPreservation of Oocyte and Granulosa Cell Morphology in Bovine Preantral Follicles Cultured in Vitro
Figueiredo, J. R.; Hulshof, S. C.; Van den Hurk, R. et al

in Theriogenology (1994), 41(6), 1333-46

Described in the present paper is a culture system that preserves oocyte and granulosa cell morphology in bovine preantral follicles during 5 d in vitro. The effects of additional hypoxanthine and energy ... [more ▼]

Described in the present paper is a culture system that preserves oocyte and granulosa cell morphology in bovine preantral follicles during 5 d in vitro. The effects of additional hypoxanthine and energy substrata (i.e., pyruvate and glutamine) on the morphology of cultured preantral follicles were investigated. It was shown that addition of a mixture of pyruvate, glutamine and hypoxantine to the culture medium increased the percentage of follicles with an intact oocyte from 29.4 to 78.6%. Morphological criteria are described to discriminate between normal and degenerated preantral follicles during culture by inverted microscopy. In addition, the importance of histological evaluation to judge the quality of oocyte and granulosa cells is demonstrated. [less ▲]

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See detailMechanisms of dexamethasone-induced insulin resistance in healthy humans.
Tappy, L.; Randin, D.; Vollenweider, P. et al

in Journal of Clinical Endocrinology and Metabolism (1994), 79(4), 1063-9

Insulin resistance may result from decreased muscle blood flow, impaired cellular glucose transport, or intracellular deficits of glucose metabolism. The mechanisms responsible for dexamethasone-induced ... [more ▼]

Insulin resistance may result from decreased muscle blood flow, impaired cellular glucose transport, or intracellular deficits of glucose metabolism. The mechanisms responsible for dexamethasone-induced insulin resistance were investigated in healthy human subjects. During a 2-h hyperinsulinemic clamp, dexamethasone decreased glucose uptake, oxidation, and nonoxidative glucose disposal during the first hour. During the second hour, glucose uptake was normalized by means of hyperglycemia; glucose oxidation, however, remained suppressed by dexamethasone. Dexamethasone also abolished the insulin-mediated increase in calf blood flow. When acipimox was administered during the clamps to correct glucocorticoid-induced inhibition of glucose oxidation, dexamethasone decreased whole body glucose uptake and nonoxidative glucose disposal in the same proportion as when no acipimox was administered. However, glucose oxidation and insulin-mediated calf blood flow were normalized after acipimox. During the second hour, exogenous glucose infusion was matched to that used in the control clamp and normalized whole body glucose uptake. However, hyperglycemia developed, indicating insulin resistance. It is concluded that dexamethasone 1) decreases glucose oxidation independently of glucose transport; this inhibition is reversed by acipimox; and 2) decreases whole body glucose uptake independently of increased lipolysis, decreased glucose oxidation, or an altered muscle blood flow. [less ▲]

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See detailExpression of intron-encoded maturase-like polypeptides in potato chloroplasts.
du Jardin, Patrick ULg; Portetelle, Daniel ULg; Harvengt, Luc et al

in Current Genetics (1994), 25(2), 158-163

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See detailWorking memory in Down's syndrome: Training the rehearsal strategy
Comblain, Annick ULg

in Down's Syndrome, Research and Practice : The Journal of the Sarah Duffen Centre (1994), 2(3), 123-126

This study reports on the verbal short term memory skills of individuals with Down's syndrome and on the possibility of increasing memory span durably by using a rehearsal strategy

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See detailMBO en Aandeelhouder
Corhay, Albert ULg; Herst, Arthur; Tourani Rad, Alireza

in Bedrifskunde (1994), 4

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See detailVaricelle létale. Etude immunohistochimique et par hybridation in situ
Nikkels, Arjen ULg; Delvenne, Philippe ULg; Sadzot-Delvaux, Catherine ULg et al

in Annales de Dermatologie et de Vénéréologie (1994), 121(2), 113-117

We report a case of lethal varicella developed in an immunocompromised man in his seventies. A study by immunohistochemistry and in situ hybridization was conducted revealing the presence of the ... [more ▼]

We report a case of lethal varicella developed in an immunocompromised man in his seventies. A study by immunohistochemistry and in situ hybridization was conducted revealing the presence of the glycoprotein gpI specific for VZV and its corresponding nucleic acids found in multiple foci of most tissues and organs, except in the brain and paravertebral sympathetic ganglia. [less ▲]

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See detailLa Formation de Pepinster dans le Synclinorium de Verviers, entre Perpinster et Eupen (Belgique)-Contexte structural et stratigraphique
Dejonghe, L; Steemans, Philippe ULg

in Annales de la Société Géologique de Belgique (1994), 117

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See detailHistoire naturelle des anévrysmes de l'aorte abdominale
SakalihasanN, Natzi ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1994), 49(10), 545-52

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See detailSyndrome naviculaire : anatomie, étio-pathogénie, diagnostic et traitement
Gabriel, Annick ULg; Caudron, I.; Serteyn, Didier ULg et al

in Annales de Médecine Vétérinaire (1994), 138

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See detailMeasurement of insulin sensitivity by the minimal model method using a simplified intravenous glucose tolerance test: validity and reproducibility.
Duysinx, Bernard ULg; Scheen, André ULg; Gerard, Pascale ULg et al

in Diabète & Métabolisme (1994), 20(4), 425-32

This study aimed at testing whether 12 rather than 26 plasma glucose and insulin determinations can be used to calculate the indices of insulin sensitivity and of glucose effectiveness using Bergman's ... [more ▼]

This study aimed at testing whether 12 rather than 26 plasma glucose and insulin determinations can be used to calculate the indices of insulin sensitivity and of glucose effectiveness using Bergman's minimal model during a simple intravenous glucose tolerance test performed without tolbutamide injection. Two intravenous glucose tolerance tests (separated by 1 week) were performed in 7 lean normal subjects and a single test was performed in 9 severely obese non-diabetic subjects. Intra-subject reproducibility of insulin sensitivity was not significantly different when 26 or 12 time-points were analyzed (CV = 16.8 +/- 3.4 versus 18.9 +/- 3.8% respectively). Compared with the insulin sensitivity of the lean subjects, that of obese subjects was significantly (P < 0.001) and similarly reduced when using 12 (2.14 +/- 0.34 versus 7.97 +/- 1.29 10(-4)min-1/mU.1-1) rather than 26 determinations (2.13 +/- 0.42 versus 6.95 +/- 1.12 10(-4) min-1/mU.1-1) respectively. Glucose effectiveness was less reproducible than insulin sensitivity and was slightly diminished by the reduction of blood samples (relative error: -9.7 +/- 4.4%; P < 0.05). Finally, glucose effectiveness tended to be slightly lower in the morbidly obese subjects than in the lean controls with both modes of calculation. In conclusion, in non-diabetic subjects, the insulin sensitivity index can be accurately measured during a simple intravenous glucose tolerance test, without tolbutamide injection and with only 12 blood samples. The possibility of performing a simplified test should contribute to increase the use of the minimal model method for estimating insulin sensitivity in clinical practice. [less ▲]

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See detailLes spermatozoïdes ont-ils du nez ?
Vanderhaeghen, P.; Schurmans, Stéphane ULg; Parmentier, M. et al

in Medecine Sciences : M/S (1994), 10

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See detailEnergy Levels in Ar II
Quinet, Pascal ULg; Palmeri, P.; Biémont, Emile ULg et al

in Physical Review. A (1994), 49

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See detailMicrostructural study of a zinc-aluminium-copper alloy after thermal treatment at 100°C and creep
Terziev, L.; Lecomte-Beckers, Jacqueline ULg; Wegria, J.

in Zeitschrift für Metallkunde (1994), 85[9]

The creep behaviour of the ternary Zn—A1—Cu alloy after thermal treatment at ioo oc has been studied. The applied creep stress does flot modify clearly the transition phases (OL, T% ‘11m) appearing during ... [more ▼]

The creep behaviour of the ternary Zn—A1—Cu alloy after thermal treatment at ioo oc has been studied. The applied creep stress does flot modify clearly the transition phases (OL, T% ‘11m) appearing during isothermal ageing. During the creep test, the formation of an important density of defects resuits in the precipitation of T’ and O’ particles. The quantity of these phases depends on the creep conditions. [less ▲]

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See detailIndia Song ou le temps tragique
Badir, Sémir ULg

in Cinémas (1994), 5(1-2), 123-133

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See detailComment évaluer la sensibilité à l'insuline en pratique?
Scheen, A. J.; Paquot, Nicolas ULg; Letiexhe, M. R. et al

in Diabète & Métabolisme (1994), 20(6, Nov-Dec), 556-61

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See detailDie Devon/Karbongrenze bei Stockum (Rheinisches Schiefergebirge).
Clausen, C.D.; Korn, D; Feist, R et al

in Geologie und Paläontologie in Westfalen (1994), 29

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See detailPolylactide Microparticules Prepared by Double Emulsion/Evaporation Technique. I. Effect of Primary Emulsion Stability
Nihant; Schugens, Chantal; Grandfils, Christian ULg et al

in Pharmaceutical Research (1994), 11(10), 1479-1484

The process of microencapsulation of proteins by double emulsion-evaporation in a matrix of polylactide (PLA) can be divided into three successive steps: first, an aqueous solution of the active compound ... [more ▼]

The process of microencapsulation of proteins by double emulsion-evaporation in a matrix of polylactide (PLA) can be divided into three successive steps: first, an aqueous solution of the active compound is emulsified into an organic solution of the hydrophobic coating polymer; second, this primary water-in-oil (w/o) is dispersed in water with formation of a double water-oil-water emulsion (w/o/w), third, the organic solvent is removed with formation of solid microparticles. This paper focuses of the effect of primary emulsion stability on the morphology and properties of polylactide microparticles loaded with bovine serum albumin (BSA) used as model drug. [less ▲]

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See detailUtilisation des moules comme bioindicateurs de la pollution en métaux lourds du littoral belge
Gobert, Sylvie ULg; Langer, Alain; Daemers-Lambert, Claire et al

in Bulletin de la Société Royale des Sciences de Liège (1994), 63(1-2), 203-210

From 1991 till 1993, a study of the Belgian coast pollution by heavy metals using Mytilus edulis as a bioindicator was performed. The Pb, Cr, Cu and Ti concentrations decreased from 1987 till 1991 but ... [more ▼]

From 1991 till 1993, a study of the Belgian coast pollution by heavy metals using Mytilus edulis as a bioindicator was performed. The Pb, Cr, Cu and Ti concentrations decreased from 1987 till 1991 but then remained unchanged till 1993. Cd contamination is increasing from 1987. Hg, whose concentration had been shown to decrease from 1975 to 1991, now reaches the same values as in 1986. The O/N measurements performed on the mussels suggest an increase of the general pollution level of the Belgian coast. However, feeding, spawning and detoxification processes are also able to influence the O/N ratio and should be taken into account in the framework of a global assessment of the pollution level of the Belgian coast [less ▲]

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See detailMetalloproteinases and serine proteases activities in mixed spheroids of mouse B16 melanoma cells and fibroblasts
Coucke, Paul; Baramova, Eugenia; Leprince, Pierre ULg et al

in International Journal of Oncology (1994), 5

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See detailL'inventaire forestier régional wallon: brève présentation méthodologique.
Lecomte, H.; Rondeux, Jacques ULg

in Silva Belgica (1994), 101(6), 9-16

Au début des années 1980, à l’initiative de la Faculté des Sciences agronomiques de Gembloux et grâce à un financement de la Région Wallonne, un inventaire a été réalisé sur l’ensemble de la Wallonie ... [more ▼]

Au début des années 1980, à l’initiative de la Faculté des Sciences agronomiques de Gembloux et grâce à un financement de la Région Wallonne, un inventaire a été réalisé sur l’ensemble de la Wallonie [RONDEUX et al., 1984]. Cet inventaire s’appuyant sur un échantillonnage systématique simple était destiné à fournir un état des lieux de la forêt wallonne de l’époque ; il a notamment permis de confirmer ou de mettre en évidence plusieurs éléments essentiels pour l’avenir du patrimoine forestier wallon [RONDEUX et al., 1986] : - le vieillissement de la hêtraie ardennaise ; - l’importante disponibilité en bois d’épicéa ; - les écarts entre les surfaces forestières observées et celles du recensement officiel. Depuis la fin de cet inventaire en 1984, aucune mise à jour n’a été programmée et en conséquence, ses résultats ont perdu leur fiabilité notamment en raison des accidents météorologiques de la dernière décennie. En 1988, l’Exécutif de la Région Wallonne, conscient de l’importance de la forêt en tant que première ressource naturelle renouvelable de la Wallonie, a sollicité la Faculté des Sciences agronomiques de Gembloux en vue de finaliser une recherche destinée à concevoir une méthodologie d’inventaire forestier permanent. Les conclusions de cette étude ont été déposées fin 1993 [LECOMTE, 1994], ce qui a permis de lancer dès février 1994 la phase opérationnelle du premier inventaire forestier permanent pour la Wallonie. Dans les lignes qui suivent, nous aborderons successivement les objectifs de l’inventaire (paragraphe 2) ainsi que les principes généraux qui le régissent (paragraphe 3). Le cheminement de l’information sera décrit depuis la récolte des données (paragraphe 4) jusqu’à la publication des résultats (paragraphe 7) en passant par le traitement et l’exploitation des données (paragraphes 5 et 6). En guise de conclusions, nous émettrons quelques réflexions issues de notre propre expérience (paragraphe 8). [less ▲]

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See detailTransient hypersensitivity to apomorphine-induced gnawing after termination of acute effects high dose of cocaine
Tirelli, Ezio ULg; Witkin, J. M.

in Behavioural Pharmacology (1994), 5(3), 289-298

Male mice were tested for behavioral effects (BEs) of the dopamine (DA) agonist apomorphine (AP) at various times after acute administration of cocaine (COC). When most of the COC had disappeared from ... [more ▼]

Male mice were tested for behavioral effects (BEs) of the dopamine (DA) agonist apomorphine (AP) at various times after acute administration of cocaine (COC). When most of the COC had disappeared from brain and the BEs of COC had dissipated (2 hrs and 4 hrs after administration), effects of AP on gnawing were increased 4-fold. This dopaminergic hypersensitivity (DA-H) was induced by acute treatment with doses of 15 mg/kg COC and higher. Effects of AP were not enhanced 6-24 hrs after COC, indicating a rapid waning of the DA-H. Hypersensitivity to AP (AP-H) was not further augmented by 8 days of daily COC injections. COC did not influence climbing and hypomotility induced by AP 4 hrs after its injection, demonstrating selectivity in the BEs of the DA-H. Further, COC did not induce sensitization to its own effects, indicating that the AP-H was not due to a typical sensitization phenomenon. ((c) 1997 APA/PsycINFO, all rights reserved) [less ▲]

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See detail3D turbulence field on the north-western european continental-shelf
Martin, Géraldine ULg; Delhez, Eric ULg

in Tellus : Series A (1994), 46(2), 98-112

The 3-dimensional, non-linear, baroclinic, GHER mathematical model for the study of mesoscale motions (time scale of several hours to several days: tides, storm surges, ...) is described. Particular ... [more ▼]

The 3-dimensional, non-linear, baroclinic, GHER mathematical model for the study of mesoscale motions (time scale of several hours to several days: tides, storm surges, ...) is described. Particular attention is paid to the turbulent closure based on an evolution equation for the turbulent kinetic energy and a parametric expression of the mixing length (k-model). Appropriate boundary conditions and numerical techniques (mode-splitting, implicity, sigma-coordinate system, advection scheme) are described. The model is applied to the simulation of the M2 tide on the North-Western European Continental Shelf not only without wind but also in typical winter and summer conditions. Large spatial variations of the turbulent kinetic energy appear as a result of the variations of depth and tidal activity around the shelf. These variations are clearly related to the different turbulence regimes observed in summer, with frontal structures separating well-mixed waters from stratified ones. The structure and evolution of the vertical profiles of turbulence variables are described and explained in barotropic and baroclinic conditions, under different wind forcings. The evolution of these profiles at the M2 tide frequency largely depends on the eccentricity of the tidal ellipse. [less ▲]

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See detailA complex composed of at least two HeLa nuclear proteins protects preferentially one DNA strand of the simple (gt)n(ga)m containing region of intron 2 in HLA-DRB genes.
Maueler, Winfried; Frank, G.; Muller, Marc ULg et al

in Journal of Cellular Biochemistry (1994), 56(1), 74-85

Electrophoretic mobility shift assays reveal that HeLa nuclear proteins bind fast and with measurable affinity to target DNAs containing mixed simple repetitive (gt)n(ga)m stretches. Preincubation of the ... [more ▼]

Electrophoretic mobility shift assays reveal that HeLa nuclear proteins bind fast and with measurable affinity to target DNAs containing mixed simple repetitive (gt)n(ga)m stretches. Preincubation of the proteins at elevated temperature prevents the formation of the major DNA/protein complex in favour of several distinct assemblies. A similar pattern of retarded bands was observed employing higher salt concentrations in the binding reaction. Thus conformational changes of different proteins appear to influence the complex rather than alternating DNA structures. Separation of the total nuclear extract into a water soluble and an insoluble protein fraction leads to a complete loss of target DNA binding capability of the fractions. The binding capacity is restored by combining the two fractions suggesting that at least two protein components are necessary to form a complex with the target sequence. The proteins can be differentiated into heat sensitive, water soluble and temperature stable, water insoluble, respectively. Furthermore, specifically binding polypeptides are not detectable by Southwestern analyses, probably because the essential components are separated during electrophoresis. DNase I footprint analyses yield four different protein binding regions only on the (gt)n(ga)m harbouring strand. The footprints cover larger portions of the mixed simple repeat in addition to a portion 5' of the (gt)n part. Hence at least two nuclear protein components of unknown biological function have to be present simultaneously to protect preferentially the (gt)n(ga)m-containing strand of intron 2 in HLA-DRB genes. [less ▲]

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See detailHigh-dose aprotinin reduces blood loss in patients undergoing total hip replacement surgery
Janssens, Marc ULg; Joris, Jean ULg; David, Jean-Louis et al

in Anesthesiology (1994), 80

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See detailAge-related differences in updating working memory
Van der Linden, Martial ULg; Brédart, Serge ULg; Beerten, A.

in British Journal of Psychology (1994), 85(1), 145-152

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See detailSuccessful treatment of progressive mucocutaneous infection due to acyclovir- and foscarnet-resistant herpes simplex virus with (S)-1-(3-hydroxy-2-phosphonylmethoxypropyl)cytosine (HPMPC).
Snoeck, R.; Andrei, G.; Gerard, Marie-Christine ULg et al

in Clinical Infectious Diseases : An Official Publication of the Infectious Diseases Society of America (1994), 18(4), 570-8

The acyclic nucleoside phosphonate (S)-1-(3-hydroxy-2-phosphonylmethoxypropyl)cytosine (HPMPC) was used topically for the treatment of persistent mucocutaneous infections in two cases. One patient with ... [more ▼]

The acyclic nucleoside phosphonate (S)-1-(3-hydroxy-2-phosphonylmethoxypropyl)cytosine (HPMPC) was used topically for the treatment of persistent mucocutaneous infections in two cases. One patient with AIDS suffered from a perineal lesion due to infection with herpes simplex virus type 2 (HSV-2) and did not respond to acyclovir and was intolerant of foscarnet. A bone marrow transplant recipient developed orofacial lesions due to infection with herpes simplex virus type 1 (HSV-1) that failed to respond to therapy with both acyclovir and foscarnet. After topical application of HPMPC, the HSV-2 lesions completely resolved. However, the lesions recurred 3 weeks later, and, upon subsequent treatment with HPMPC, regressed. On recurrence, the virus was found to be sensitive to acyclovir, which the patient was given. Again HSV-2, which was resistant to acyclovir, emerged; similar observations were made after another cycle of HPMPC therapy. The HSV-1 isolates were resistant to acyclovir and foscarnet. Following local HPMPC treatment, the lesions regressed, but after 1 week, a second course of topical HPMPC therapy had to be instituted for recurrent infection. The lesions again regressed, and as the recurrent virus was sensitive to acyclovir, the patient was successfully treated with the drug. The results of this study point to the potential usefulness of topical HPMPC in the treatment of immunocompromised patients with HSV-related mucocutaneous infections that are refractory to therapy with acyclovir and/or foscarnet. [less ▲]

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See detailLogiciel d'aide à la détermination détaillée du poids et du bilan électrique d'un navire
Marchal, Jean ULg; Hage, André ULg; Rodriguez, S.

in Bulletin de l'Association Technique Maritime et Aéronautique (1994)

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See detailL'agrégé nouveau est arrivé !
Jadoulle, Jean-Louis ULg

in Bulletin de Clio (1994)

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See detailPathogenesis of migraine: the biobehavioural and hypoxia theories reconciled.
Schoenen, Jean ULg

in Acta Neurologica Belgica (1994), 94(2), 79-86

The recent pathophysiological data obtained in migraine patients during and between attacks are reviewed in this article. They suggest that the headache in migraine is due to activation of the trigemino ... [more ▼]

The recent pathophysiological data obtained in migraine patients during and between attacks are reviewed in this article. They suggest that the headache in migraine is due to activation of the trigemino-vascular system. While this can be found in other headache disorders, the process leading ultimately to trigemino-vascular activation appears to characterize migraine. Between attacks, the migrainous brain has two functional abnormalities: a habituation defect in sensory processing, probably related to dysfunctioning transmitter (serotonin, noradrenaline) systems and a reduced mitochondrial energy reserve. Both abnormalities may be genetically determined and concur to favour biochemical shifts leading to the migraine attack as a primary protective mechanism of the brain. Such a model of migraine pathogenesis reconciles the biobehavioural and hypoxia theories and opens new therapeutic perspectives. [less ▲]

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See detailEpidural anesthesia impairs both central and peripheral thermoregulatory control during general anesthesia.
Joris, Jean ULg; Ozaki, Makoto; Sessler, Daniel I et al

in Anesthesiology (1994), 80(2), 268-77

BACKGROUND: The authors tested the hypotheses that: (1) the vasoconstriction threshold during combined epidural/general anesthesia is less than that during general anesthesia alone; and (2) after ... [more ▼]

BACKGROUND: The authors tested the hypotheses that: (1) the vasoconstriction threshold during combined epidural/general anesthesia is less than that during general anesthesia alone; and (2) after vasoconstriction, core cooling rates during combined epidural/general anesthesia are greater than those during general anesthesia alone. Vasoconstriction thresholds and heat balance were evaluated under controlled circumstances in volunteers, whereas the clinical importance of intraoperative thermoregulatory vasoconstriction was evaluated in patients. METHODS: Five volunteers were each evaluated twice. On one of the randomly ordered days, epidural anesthesia (approximately T9 dermatomal level) was induced and maintained with 2-chloroprocaine. On both study days, general anesthesia was induced and maintained with isoflurane (0.7% end-tidal concentration), and core hypothermia was induced by surface cooling and continued for at least 1 h after fingertip vasoconstriction was observed. Patients undergoing colorectal surgery were randomly assigned to combined epidural/enflurane anesthesia (n = 13) or enflurane alone (n = 13). In appropriate patients, epidural anesthesia was maintained by an infusion of bupivacaine. The core temperature that triggered fingertip vasoconstriction identified the threshold. RESULTS: In the volunteers, the vasoconstriction threshold was 36.0 +/- 0.2 degrees C during isoflurane anesthesia alone, but significantly less, 35.1 +/- 0.7 degrees C, during combined epidural/isoflurane anesthesia. Cutaneous heat loss and the rates of core cooling were similar 30 min before vasoconstriction with and without epidural anesthesia. In the 30 min after vasoconstriction, heat loss decreased 33 +/- 13 W when the volunteers were given isoflurane alone, but only 8 +/- 16 W during combined epidural/isoflurane anesthesia. Similarly, the core cooling rates in the 30 min after vasoconstriction were significantly greater during combined epidural/isoflurane anesthesia (0.8 +/- 0.2 degrees C/h) than during isoflurane alone (0.2 +/- 0.1 degrees C/h). In the patients, end-tidal enflurane concentrations were slightly, but significantly, less in the patients given combined epidural/enflurane anesthesia (0.6 +/- 0.2% vs. 0.8 +/- 0.2%). Nonetheless, the vasoconstriction threshold was 34.5 +/- 0.6 degrees C in the epidural/enflurane group, which was significantly less than that in the other patients, 35.6 +/- 0.8 degrees C. When the study ended after 3 h of anesthesia, patients given combined epidural/enflurane anesthesia were 1.2 degrees C more hypothermic than those given general anesthesia alone. The rate of core cooling during the last hour of the study was 0.4 +/- 0.2 degrees C/h during combined epidural/enflurane anesthesia, but only 0.1 +/- 0.3 degrees C/h during enflurane alone. CONCLUSIONS: These data indicate that epidural anesthesia reduces the vasoconstriction threshold during general anesthesia. Furthermore, the markedly reduced rate of core cooling during general anesthesia alone illustrates the importance of leg vasoconstriction in maintaining core temperature. [less ▲]

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See detailApplied methodology to delineate protection zones around pumping wells
Dassargues, Alain ULg

in Journal of Environmental Hydrology (1994), 2(2), 3-10

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See detailLATTICE-DYNAMICS AND DIELECTRIC-PROPERTIES OF INCIPIENT FERROELECTRIC TIO2 RUTILE
LEE, C.; Ghosez, Philippe ULg; GONZE, X.

in Physical Review. B : Condensed Matter (1994), 50(18), 13379-13387

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See detailConfrontation anatomo-clinique: a propos de deux cas de meningite bacterienne.
Deprez, Manuel ULg; Van Den Brule, Justine ULg; Degauque, C. et al

in Revue Médicale de Liège (1994), 49(11), 615-20

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See detailAspects épidémiologiques du suicide
Gosset, Christiane ULg

in Observatoire : Revue d'Action Sociale & Médico-Sociale (1994), 2

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See detailLa châsse de saint Remacle à Stavelot : étude des éléments décoratifs
Van den Bossche, Benoît ULg

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Beaux-Arts (1994), V(1-6), 109-149

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See detailYeast excision repair RAD2 encodes a single-stranded DNA endonuclease
Habraken, Yvette ULg; Sung, Partick; Prakash, Louise et al

in Nature (1993), 366

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