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See detailThe effect of salmon calcitonin on blood-ionized calcium in the presence of anti-salmon calcitonin antibodies (from pagetic patients) in young rabbits
Reginster, Jean-Yves ULg; Azria, M; Gaspar, S et al

in Current Therapeutic Research (1990), 47(6), 1063-1072

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See detailThe development of radial glia and radial dendrites during barrel formation in mouse somatosensory cortex
Crandall, james E; Butler, darlene; Misson, Jean-Paul ULg

in Developmental Brain Research (1990), 55

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See detailObservation ultraviolette des planètes géantes et de leurs satellites à l'aide du téléescope spatial Hubble
Gérard, Jean-Claude ULg; Dols, V.

in Nouvelles de la Science et des Technologies (1990), 8(3-4), 43-46

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See detailLe télescope pour l'ultraviolet extrême EIT
Koeckelenberg, A.; Rochus, Pierre ULg

in Nouvelles de la Science et des Technologies (1990), 8

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See detailRéflexions sur les vases métalliques des tributaires Keftiou
Laboury, Dimitri ULg

in Aegeum - Annales d'Archéologie égéenne de l'Université de Liège (1990), 6

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See detailCloning of a mitogen-inducible gene encoding a kappa B DNA-binding protein with homology to the rel oncogene and to cell-cycle motifs.
Bours, Vincent ULg; Villalobos, J.; Burd, P. R. et al

in Nature (1990), 348(6296), 76-80

We have cloned and characterized a mitogen-inducible gene isolated from human T cells that predicts a protein of 968 amino acids. The amino-terminal domain has regions homologous to the oncogene rel and ... [more ▼]

We have cloned and characterized a mitogen-inducible gene isolated from human T cells that predicts a protein of 968 amino acids. The amino-terminal domain has regions homologous to the oncogene rel and to the developmentally important gene dorsal of Drosophila. The carboxy-terminal domain contains repeat structures found in a variety of proteins that are involved in cell-cycle control of yeast and in tissue differentiation in Drosophila and Ceanorhabditis elegans, as well as in the putative human oncogene bcl-3 and in the ankyrin protein. A truncated form of the product of this gene translated in vitro is a DNA-binding protein which interacts specifically with the kappa B binding site found in many inducible genes, including the enhancer in human immunodeficiency virus. This gene is yet another in a growing list of important regulatory molecules whose expression is transcriptionally induced upon cellular activation. [less ▲]

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See detailDevelopment of monoclonal antibodies recognizing 7-(2-hydroxyethyl)guanine and imidazole ring-opened 7-(2-hydroxyethyl)guanine.
Young, T. L.; Habraken, Yvette ULg; Ludlum, D. et al

in Carcinogenesis (1990), 11

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See detailConstraints on the standard model and two Higgs models from $B$ and $K$ physics
Cocolicchio, Decio; Cudell, Jean-René ULg

in Physics Letters B (1990), B245

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See detailCapacite moussante des isolats proteiques: influence du potentiel electrocinetique des dispersions proteiques.
Bastiaens, A.; Paquot, Michel ULg; Marbaise, M. et al

in Sciences des Aliments (1990), 10(4),

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See detailThe presence of a type IV collagen skeleton associated with periductal elastosis in breast cancer
Verhoeven, D.; Bourgeois, N.; Noël, Agnès ULg et al

in Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society (1990), 38

Using serial sections of frozen and AFA-fixed tissues from 34 breast cancers, we studied the presence of basement membrane material in the areas of elastosis. Various amounts of type IV collagen but not ... [more ▼]

Using serial sections of frozen and AFA-fixed tissues from 34 breast cancers, we studied the presence of basement membrane material in the areas of elastosis. Various amounts of type IV collagen but not of laminin were demonstrated in areas of periductal elastosis. In some tumors, type IV collagen accumulated beneath the basement membrane. Periductal elastosis in areas of extensive fibrosis showed focal type IV collagen immunoreactivity, indicating remnants of ducts. Interstitial elastosis corresponded with weak type IV collagen reactivity. Each tumor showed type IV collagen immunostaining of the elastotic areas, with various degrees of intensity. Negative crossreactivity of the type IV collagen antibody with elastin was verified in skin biopsies with solar elastosis. Pre-incubation of the antibody with large amounts of elastin demonstrated an identical immunoreactivity. The specificity of the antibody was confirmed by ELISA and by Western blot analysis. To explain the periductal elastosis, we propose the following hypothesis. Excessive production of basement membrane material by the epithelial cells of the ducts leads to formation of a type IV collagen skeleton. This skeleton can act as the matrix for a secondary deposition of elastic material. [less ▲]

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See detailCombined diagnostic value of biochemical markers in acute pancreatitis.
Viel, J F; Foucault, P; Bureau, F et al

in Clinica Chimica Acta (1990), 189(2), 191-8

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See detailLe medecine ball, applications et effets
Vanderthommen, Marc ULg

in Revue de l'Education Physique (1990), 30(4), 167-175

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See detail(D,L) Polylactide microspheres as embolic agent
Flandroy, Pierre; Grandfils, Christian ULg; COLLIGNON, Jacques ULg et al

in Neuroradiology (1990), 32

Owing to their shape, accurately calibrated microspheres appear to be very suitable material for distal embolization. Moreover, the biocompatible (D,L) polylactide (PLA) microspheres possess two other ... [more ▼]

Owing to their shape, accurately calibrated microspheres appear to be very suitable material for distal embolization. Moreover, the biocompatible (D,L) polylactide (PLA) microspheres possess two other valuable advantages: easy adjustment of their biodegradation rate, and incorporation of chemotherapeutic agents during their production. The authors describe the preparation of these (D,L) PLA microspheres and their clinical applications as a preliminary step to arterial chemoembolization. [less ▲]

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See detailDiagnosis by PCR of HIV-1 infection in seronegative individuals at risk
Vaira, Dolorès ULg; François-Gérard, Ch.; Doppagne, A. et al

in AIDS Research and Human Retroviruses (1990), 6(2), 173-174

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See detailDirect and neurally mediated effects of halothane on pulmonary resistance in vivo.
Warner, David O; Vettermann, Jörg; Brichant, Jean-François ULg et al

in Anesthesiology (1990), 72(6), 1057-63

It has been suggested that halothane inhibits contraction of airway smooth muscle in vivo mainly by reducing reflex activity in nerves innervating the muscle with only minimal direct effects on the muscle ... [more ▼]

It has been suggested that halothane inhibits contraction of airway smooth muscle in vivo mainly by reducing reflex activity in nerves innervating the muscle with only minimal direct effects on the muscle itself. To examine possible mechanisms of action of halothane at clinically relevant concentrations the authors studied the effect of halothane on increases in pulmonary resistance (RL) produced by either vagus nerve stimulation (VNS, which caused neurally mediated constriction) or the inhalation of nebulized acetylcholine (ACh, which directly stimulated the smooth muscle cell) in nine mongrel dogs. The frequency of bilateral VNS and the dose of nebulized ACh were adjusted to produce approximately equal increases in RL. Halothane reduced the response to both types of stimulation in a dose-dependent fashion. At halothane concentrations greater than or equal to 0.4 MAC, the VNS response was significantly less than the ACh response. When tetrodotoxin was given to block neural activity, the ACh response was unchanged, confirming that neural activation did not contribute significantly to smooth muscle contraction in response to ACh. The authors conclude that in addition to neurally mediated effects, halothane at clinically used concentrations has significant direct effects on airway smooth muscle stimulated by ACh. The relative importance of each factor in vivo should depend on the stimulus that causes contraction of airway smooth muscle. [less ▲]

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See detailIron status in runners of various running specialities
Mouton, G.; Sluse, Francis ULg; Bertrand, A. et al

in Archives Internationales de Physiologie et de Biochimie (1990), 98

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See detailEnergy levels and oscillator strengths for gallium-like ions (Br V- In XIX)
Biémont, E; Quinet, Pascal ULg

in Journal of Quantitative Spectroscopy & Radiative Transfer (1990), 44

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See detailKinetic mechanism of mitochondria carriers catalysing exchange reactions
Sluse, Francis ULg; Evens, A.; Duyckaerts, Claire ULg et al

in Journal of Biosciences (1990), 15

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See detailThe Rock of Empire: The Image of the Stone in Randolph Stow's To the Islands
Delrez, Marc ULg

in BELL. Belgian Essays on Language and Literature (1990)

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See detail«Lasse inedite della chanson de geste de Foucon de Candie»
Moreno, Paola ULg

in Medioevo Romanzo (1990), XV

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See detailLe triticale en alimentation animale. Pt. 1.
Leterme, Pascal; Tahon, François; Thewis, André ULg

in Revue de l’Agriculture = Landbouwtijdschrift (1990), 43(4), 617-629

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See detailLa magie des Petites légendes de Maurice Carême
Defays, Jean-Marc ULg

in Bulletin francophone de Finlande (1990), (6), 29-34

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See detailRegulation of Ion Uptake in Membrane Vesicles from Rat Brain by Thiamine Compounds
Bettendorff, Lucien ULg; Wins, Pierre; Schoffeniels, Ernest

in Biochemical and Biophysical Research Communications (1990), 171(3), 1137-1144

We examined the effects of thiamine derivatives on ion uptake in rat brain membrane vesicles. Thiamine triphosphate (1 mM) and pyrithiamine (0.1 mM) increase chloride uptake. Preincubation of crude ... [more ▼]

We examined the effects of thiamine derivatives on ion uptake in rat brain membrane vesicles. Thiamine triphosphate (1 mM) and pyrithiamine (0.1 mM) increase chloride uptake. Preincubation of crude homogenate with thiamine or pyrithiamine increases chloride uptake while oxythiamine has the reverse effect. Thiamine and oxythiamine also affect 22Na+ and 86Rb+ uptake in the same way as for 36Cl- but to a lesser extent. Thiamine-dependent 36Cl- uptake is activated by sodium bicarbonate (10 mM) and partially inhibited by bumetanide (0.1 mM) and 2,4-dinitrophenol (0.1 mM). Preincubation with thiamine increases the thiamine triphosphate content of the vesicles. The hypothesis that TTP is the activator of a particular chloride uptake mechanism is discussed. [less ▲]

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See detailHistologic study of peritoneal endometriosis in infertile women.
NISOLLE, Michelle ULg; Paindaveine, Bénédicte; Bourdon, Anne et al

in Fertility and Sterility (1990), 53(6), 984-8

The present study included 118 patients undergoing a laparoscopy for infertility. In 86 patients with laparoscopically diagnosed endometriosis (group I), biopsies were taken from areas of apparent ... [more ▼]

The present study included 118 patients undergoing a laparoscopy for infertility. In 86 patients with laparoscopically diagnosed endometriosis (group I), biopsies were taken from areas of apparent endometriosis (n = 86) and from a visually normal peritoneum (n = 52). Histology reveals the presence of endometriosis in 93% of positive sites and in 13% of negative sites. In 32 patients without endometriosis at laparoscopy (group II), biopsies were taken from normal uterosacral ligaments (n = 32). Endometriosis was observed in 6% of cases. Despite the increased ability to detect pigmented and nonpigmented endometriotic lesion, histological study revealed the presence of endometriosis in normal peritoneum in 13% (group I) and 6% (group II) of cases. [less ▲]

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See detailA theoretical survey of resonance transitions in nickel-like ions (Ge V - La XXX)
Quinet, Pascal ULg; Biémont, E

in Bulletin de la Société Royale des Sciences de Liège (1990), 59

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See detailSpatiotemporal segregation of endothelial cell integrin and nonintegrin extracellular matrix-binding proteins during adhesion events.
Basson, C. T.; Knowles, W. J.; Bell, L. et al

in Journal of Cell Biology (1990), 110(3), 789-801

Bovine aortic endothelial cell (BAEC) attachments to laminin, fibronectin, and fibrinogen are inhibited by soluble arginine-glycine-aspartate (RGD)-containing peptides, and YGRGDSP activity is responsive ... [more ▼]

Bovine aortic endothelial cell (BAEC) attachments to laminin, fibronectin, and fibrinogen are inhibited by soluble arginine-glycine-aspartate (RGD)-containing peptides, and YGRGDSP activity is responsive to titration of either soluble peptide or matrix protein. To assess the presence of RGD-dependent receptors, immunoprecipitation and immunoblotting studies were conducted and demonstrated integrin beta 1, beta 3, and associated alpha subunits as well as a beta 1 precursor. Immunofluorescence of BAECs plated on laminin, fibronectin, and fibrinogen reveals different matrix-binding specificities of each of these integrin subclasses. By 1 h after plating, organization of beta 1 integrin into fibrillar streaks is influenced by laminin and fibronectin, whereas beta 3 integrin punctate organization is influenced by fibrinogen and the integrin spatial distribution changes with time in culture. In contrast, the nonintegrin laminin-binding protein LB69 only organizes after cell-substrate contact is well established several hours after plating. Migration of BAECs is also mediated by both integrin and nonintegrin matrix-binding proteins. Specifically, BAEC migration on laminin is remarkably sensitive to RGD peptide inhibition, and, in its presence, beta 1 integrin organization dissipates and reorganizes into perinuclear vesicles. However, RGD peptides do not alter LB69 linear organization during migration. Similarly, agents that block LB69--e.g., antibodies to LB69 as well as YIGSR-NH2 peptide--do not inhibit attachment of nonmotile BAECs to laminin. However, both anti-LB69 and YIGSR-NH2 inhibit late adhesive events such as spreading. Accordingly, we propose that integrin and nonintegrin extracellular matrix-binding protein organizations in BAECs are both temporally and spatially segregated during attachment processes. High affinity nonintegrin interaction with matrix may create necessary stable contacts for longterm attachment, while lower affinity integrins may be important for initial cell adhesion as well as for transient contacts of motile BAECs. [less ▲]

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See detailComment aborder la santé mentale et la psychologie médicale auprès d'étudiants en médecine
Triffaux, Jean-Marc ULg; Bertrand, Jean ULg; Gosset, Christiane ULg et al

in colloque de la société de psychologie medicale (1990)

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See detailSuperconductivity fluctuations in electrical and thermoelectrical properties of granular ceramic superconductors: Homogeneous versus fractal behavior
Clippe, Paulette ULg; Laurent, Christian; Patapis, S. K. et al

in Physical Review B (1990), 42(13), 8611-8614

Both the electrical-resistivity and the thermoelectric-power temperature-derivative diver- gences are examined in typical granular ceramic superconductors (YBa2Cu3O7-y and Bi1.75Pb0.25Ca2Sr2Cu3O10-z ... [more ▼]

Both the electrical-resistivity and the thermoelectric-power temperature-derivative diver- gences are examined in typical granular ceramic superconductors (YBa2Cu3O7-y and Bi1.75Pb0.25Ca2Sr2Cu3O10-z). Critical exponents are extracted in the region above the critical temperature. The dimensionality of anomalous superconductivity fluctuations is deduced. The same universal behavior is found for the excess resistivity and the excess thermoelectric power in a given system. It is shown that a homogeneous regime and a self-similar (fractal) behavior can be distinguished depending on the samples. The results are discussed in terms of superconductivity paths occurring through surface connections and of different values of the superconductivity S and percolation P coherence-length ratio. [less ▲]

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See detailComparison of the Effect of Morphine on Locus Coeruleus Noradrenergic and Ventral Tegmental Area Dopaminergic Neurons in Vitro
Seutin, Vincent ULg; Franchimont, Nathalie; Massotte, Laurent ULg et al

in Life Sciences (1990), 46(25), 1879-85

Extracellular single-cell recordings were performed on rat brain slices to compare the effects of morphine on noradrenergic neurons of the locus coeruleus (LC) and on dopaminergic neurons of the ventral ... [more ▼]

Extracellular single-cell recordings were performed on rat brain slices to compare the effects of morphine on noradrenergic neurons of the locus coeruleus (LC) and on dopaminergic neurons of the ventral tegmental area (VTA). Morphine inhibited the firing of LC neurons at very low concentrations. The mean IC50 was 13.4 +/- 1nM (mean +/- SEM) (n = 7). Moreover, the inhibitory effect of morphine was identical in slices obtained from rats anesthetized with chloral hydrate or from non-anesthetized rats. On the contrary, morphine did not have any influence on the firing of most VTA neurons (N = 20) up to 100 microM, and did not modify the sensitivity of their autoreceptors (N = 8). It is concluded that morphine potently inhibits the firing of LC neurons in vitro both in slices of anesthetized and not anesthetized animals and has no direct excitatory effect on VTA dopaminergic neurons of the rat. [less ▲]

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See detailComparaison des taxocénoses de Carabides de terrils et de milieux semi-naturels.
Dufrêne, Marc ULg; Anrys, Pierre; Barbier, Yvan et al

in Notes fauniques de Gembloux (1990), 21

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See detailRenal effects of cadmium body burden of the general population
Buchet, J. P.; Lauwerys, R.; Roels, H. et al

in Lancet (1990), 336

In a cross-sectional population study to assess whether environmental exposure to cadmium associated with renal dysfunction, 1699 subjects aged 20-80 years were studied as a random sample of four areas of ... [more ▼]

In a cross-sectional population study to assess whether environmental exposure to cadmium associated with renal dysfunction, 1699 subjects aged 20-80 years were studied as a random sample of four areas of Belgium with varying degrees of cadmium pollution. After standardisation fo several possible confounding factors, five variables (urinary excretion of retinol-binding protein, N-acetyl-ß-glucosaminidase, ß2-microglobulin, aminoacids, and calcium) were significantly associated with the urinary excretion of cadmium (as a marker of cadmium body burden) suggesting the presence of tubular dysfunction. There was a 10% probablility of values of these variables being abnormal when cadmium excretion exceeded 2-4 µg/24h. Excretion reached also evidence that diabetic patients may be more susceptible to the toxic effect of cadmium on the renal proximal tubule. [less ▲]

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See detailSensibilite des grains de plusieurs varietes de ble, Triticum aestivum L., vis-a-vis du charancon du ble, Sitophilus granarius (L.) (Col., Curculionidae).
Rodriguez-Cobos, C.; Haubruge, Eric ULg; Gaspar, Charles ULg

in Mededelingen van de Faculteit Landbouwwetenschappen (Rijksuniversiteit te Gent) (1990), 55(2a),

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See detailLes banques de données en épigraphie. L’exemple de P.E.T.R.A.E.
Denooz, Joseph ULg

in Tijdschrift voor Geschiedenis (1990), 103(2), 342-354

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See detailPerinatal growth hormone (GH) physiology : effect of GH-releasing factor on maternal and fetal secretion of pituitary and placental GH.
De Zegher, F.; Vanderschueren-Lodeweyckx, M.; Spitz, B. et al

in Journal of Clinical Endocrinology and Metabolism (1990), 71(2), 520-522

To study regulation of the secretion of human pituitary GH (hGH) and placental GH (hPGH) in the pregnant woman and human fetus, the GH-releasing factor Sermorelin [GRF-(l–29)-NH2] was administered to ... [more ▼]

To study regulation of the secretion of human pituitary GH (hGH) and placental GH (hPGH) in the pregnant woman and human fetus, the GH-releasing factor Sermorelin [GRF-(l–29)-NH2] was administered to pregnant women at term (n = 5), just before elective cesarean section; saline was administered in control studies (n = 5). The effects of GRF-(1–29)-NH2 administration on maternal and fetal serum concentrations of hGH and GRF-(l–29)-NH2 and maternal serum levels of hPGH were evaluated at birth. The mean time span between injection and birth was 20 min (range, 15–25 min). Cord serum hGH concentrations were similar in infants of GRF-(1–29)-NH2-injected mothers and control infants. GRF-(l–29)-NH2 elicited a consistent but small rise in maternal hGH serum concentrations (P = 0.08), whereas hPGH concentrations remained unaltered. Finally, GRF-(l–29)-NH2 concentrations were undetectable in cord serum, but readily detectable in concomitantly obtained maternal serum. In conclusion, these data suggest that hGH secretion in the pregnant woman at term is suppressed at the pituitary level, that GRF does not affect hPGH secretion, and that fetal hGH secretion is independent of circulating maternal GRF, probably because of lack of transplacental GRF passage. [less ▲]

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See detailLe règlement du droit de garde dans les procédures de divorce. Aspects sociologiques.
Guillaume, Jean-François ULg

in Revue d'Action Sociale (1990), 3(mai-juin), 63-72

Présentation des dispositions légales organisant la séparation durant les années 1980-1990. Analyse de données relatives à l'attribution du droit de garde à l'issue d'une procédure en divorce.

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See detailGivetian-Frasnian phytogeography of Euramerica and Western Gondwana based on Miospore distribution.
Streel, Maurice ULg; Fairon-Demaret, M; Loboziak, S

in Special Publication - Geological Society of London (1990), 12

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See detailProbing conductivity fluctuations in high critical temperature superconductors
Ausloos, Marcel ULg; Clippe, Paulette ULg; Laurent, Christian

in Solid State Communications (1990), 73(2), 137-141

We comment and discuss published data on the electrical resistivity of high temperature superconductors in order to extract the dimensionality of superconductivity "critical" fluctuations. We present ... [more ▼]

We comment and discuss published data on the electrical resistivity of high temperature superconductors in order to extract the dimensionality of superconductivity "critical" fluctuations. We present arguments which indicate that observation of three temperature regimes is indeed possible: a scaling regime close to Tc and two regimes in the mean field region. In each regime, dominant scattering mechanisms can be different. [less ▲]

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See detailBeta-lactamase of Bacillus licheniformis 749/C at 2 A resolution.
Moews, P. C.; Knox, J. R.; Dideberg, O. et al

in Proteins (1990), 7(2), 156-71

Two crystal forms (A and B) of the 29,500 Da Class A beta-lactamase (penicillinase) from Bacillus licheniformis 749/C have been examined crystallographically. The structure of B-form crystals has been ... [more ▼]

Two crystal forms (A and B) of the 29,500 Da Class A beta-lactamase (penicillinase) from Bacillus licheniformis 749/C have been examined crystallographically. The structure of B-form crystals has been solved to 2 A resolution, the starting model for which was a 3.5 A structure obtained from A-form crystals. The beta-lactamase has an alpha + beta structure with 11 helices and 5 beta-strands seen also in a penicillin target DD-peptidase of Streptomyces R61. Atomic parameters of the two molecules in the asymmetric unit were refined by simulated annealing at 2.0 A resolution. The R factor is 0.208 for the 27,330 data greater than 3 sigma (F), with water molecules excluded from the model. The catalytic Ser-70 is at the N-terminus of a helix and is within hydrogen bonding distance of conserved Lys-73. Also interacting with the Lys-73 are Asn-132 and the conserved Glu-166, which is on a potentially flexible helix-containing loop. The structure suggests the binding of beta-lactam substrates is facilitated by interactions with Lys-234, Thr-235, and Ala-237 in a conserved beta-strand peptide, which is antiparallel to the beta-lactam's acylamido linkage; an exposed cavity near Asn-170 exists for acylamido substituents. The reactive double bond of clavulanate-type inhibitors may interact with Arg-244 on the fourth beta-strand. A very similar binding site architecture is seen in the DD-peptidase. [less ▲]

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See detailHomogeneous and fractal behavior of superconducting fluctuations in the electrical resistivity of granular ceramic superconductors
Ausloos, Marcel ULg; Clippe, Paulette ULg; Laurent, Christian

in Physical Review B (1990), 41(13), 9506-9509

Experimental data show that the electrical-resistivity temperature derivative diverges in a different manner in the granular ceramic superconductors YBa2Cu3O7-y and Bi1.75Pb0.25Ca2Sr2Cu3O10-y. Critical ... [more ▼]

Experimental data show that the electrical-resistivity temperature derivative diverges in a different manner in the granular ceramic superconductors YBa2Cu3O7-y and Bi1.75Pb0.25Ca2Sr2Cu3O10-y. Critical exponents are extracted and explained. The dimensionality of anomalous superconductivity fluctuations is deduced. A homogeneous case and a self-similar (fractal) behavior can occur and are found. They correspond to different values of the superconductivity s and some percolation p coherence-length ratio. The results indicate that superconductivity percolation is achieved through surface connection rather than through path connection. [less ▲]

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See detailCalcitonine, ménopause et ostéoporose
Reginster, Jean-Yves ULg

in Cycléos (1990), 5

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See detailFinite-elements design of a guarded heating cylinder to measure thermal properties of materials
Nicolas, Jacques ULg; Martin, Fabrice; Andre, Philippe ULg et al

in Review of Scientific Instruments (1990), 61

A device for the measurement of thermal properties of phase change materials and, in general, of medium thermal conductivity materials, is described. The measuring cell is a modified version of the ... [more ▼]

A device for the measurement of thermal properties of phase change materials and, in general, of medium thermal conductivity materials, is described. The measuring cell is a modified version of the guarded hot plate technique, here designed for about 8-cm-diam samples. A well-known difficulty arises in such a device: its limitation when the sample cross section becomes too small with respect to its thickness. A finite-element model is used to study the shape of isotherms in a thick sample (10 cm) for different configurations of the measuring device. This analysis has led to the selection of the optimum design. It shows that the instrument is able to handle samples with a diameter to thickness ratio of about 1 so far as the heat transfer coefficient remains beneath some limits (here 100 W/m2 K). The control system is also described and some typical results are presented. Review of Scientific Instruments is copyrighted by The American Institute of Physics. [less ▲]

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See detailAn anomalous nonlinear heat-conduction problem (improvement)
Beckers, Jean-Marie ULg

in Mathematical & Computer Modelling (1990), 13(5), 89-92

A linear anomalous heat-flux problem is analysed from a stability point of view and a previous [Mathl Comput. Modelling 12(6), 671–672 (1989)] is improved. Then a non-linear problem proposed in the same ... [more ▼]

A linear anomalous heat-flux problem is analysed from a stability point of view and a previous [Mathl Comput. Modelling 12(6), 671–672 (1989)] is improved. Then a non-linear problem proposed in the same paper is partly resolved and numerically verified, which shows that only one stationary solution is stable to perturbations. [less ▲]

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See detailReconstituted basement membrane matrix stimulates interstitial procollagenase synthesis by human fibroblasts in culture.
Emonard, H.; Christiane, Y.; Munaut, Carine ULg et al

in Matrix (Stuttgart, Germany) (1990), 10(6), 373-7

Synthesis of interstitial collagenase by human fibroblasts was compared when cultured on plastic, in the presence or absence of soluble laminin, on a type I collagen gel and on a gel of basement membrane ... [more ▼]

Synthesis of interstitial collagenase by human fibroblasts was compared when cultured on plastic, in the presence or absence of soluble laminin, on a type I collagen gel and on a gel of basement membrane components (matrigel). Fibroblasts cultured on matrigel or on type I collagen gel displayed an increase in the steady-state levels of mRNA for interstitial procollagenase that was proportional to its enzymatic activity. Laminin, the main component of matrigel, had no effect on the interstitial collagenase synthesis by fibroblasts. We suggest that matrigel, which stimulates the interstitial collagenase production at a transcriptional step, could regulate the catabolic potential of fibroblasts. [less ▲]

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See detailOn the Use of DNA Fingerprints for Linkage Studies in Cattle
Georges, Michel ULg; Lathrop, M.; Hilbert, P. et al

in Genomics (1990), 6(3), 461-474

To find a marker for the bovine "muscular hypertrophy" gene and for the "roan" locus, we have typed six cattle pedigrees totaling 540 animals for nine blood group systems, for 12 biochemical markers, for ... [more ▼]

To find a marker for the bovine "muscular hypertrophy" gene and for the "roan" locus, we have typed six cattle pedigrees totaling 540 animals for nine blood group systems, for 12 biochemical markers, for RFLPs at four loci, and with five probes revealing multilocus DNA fingerprints. Segregation analysis of the fingerprint bands showed that, in cattle, a fingerprint probe will reveal a mean of 7.6 clearly resolvable bands, behaving as simple, highly informative Mendelian entities characterized by a mean mutation rate of +/- 1/4500 gametes. For one of the bands, we observed a "mutation burst" generating germline mosaicism. Because some of the fingerprint bands were allelic or corresponded to clustered minisatellites, a mean of only 5.7 independent loci is explored per probe. Fingerprint bands revealed by different probes also show a clear propensity for close linkage, pointing toward nonrandom distribution of minisatellite sequences or the existence of minisatellite clusters. Although this reduces the power of fingerprints for linkage analysis substantially, we were able to demonstrate genetic linkage between fingerprint bands and at least three of the classical markers, to exclude the roan locus from 4.5 Morgans of the bovine genome with the DNA fingerprints and for an additional 2.5 Morgans with the classical markers, and to identify a solid candidate marker for the bovine muscular hypertrophy gene, yielding a lod score greater than or equal to 2.84 without any obliged recombinant. [less ▲]

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See detailDissections spontanées de la carotide interne. A propos de sept cas avec revue de la littérature
Van Damme, Hendrik ULg; Martin, Didier ULg; Stassen, M. P. et al

in Journal des Maladies Vasculaires (1990), 15(1), 14-22

Since 1978, the authors have observed 7 cases of dissecting aneurysm in the internal carotid artery. Symptoms were severe headache and subsequent neurologic deficit in young persons (3 women, 4 men; mean ... [more ▼]

Since 1978, the authors have observed 7 cases of dissecting aneurysm in the internal carotid artery. Symptoms were severe headache and subsequent neurologic deficit in young persons (3 women, 4 men; mean age 35 years). The underlying pathology was spontaneous dissection of the cervical internal carotid artery, with surgical confirmation in 3 cases and typical angiographic patterns in all cases. Spontaneous dissection of the cervical internal carotid artery is being increasingly recognized as a cause of cerebral ischemia in young adults. Moreover this clinicopathologic event is more common than had previously been supposed. The etiology remains unclear, except in 15% of cases in which dystrophy of the media (Marfan's syndrome) is in cause. No history of cervical trauma can be found. Typical clinical features consist in ipsilateral headache preceding an abrupt neurologic deficit in a 40-year-old person. An incomplete Horner syndrome (oculosympathetic paresis without facial anhidrosis) associated with facial pain and numbness is pathognomonic, but the majority of dissections are less typical. The typical angiographic pattern is an elongated regular stenosis of the high cervical internal carotid artery, 2 cm above the non-involved bulbus ("string sign"). The dissection may modify to a tapered occlusion above the point of origin of the internal carotid artery. The natural course is spontaneous resolution of the stricture, without relapse. Optimal management is non-operative since medical treatment has proved to be efficient. These cases confirm the benign course and overall good prognosis of spontaneous dissections of the internal carotid artery which are not as rare as the scarcity of reports might indicate.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailEffect of Show Jumping on Heart Rate, Blood Lactate and Other Plasma Biochemical Values
Art, Tatiana ULg; Amory, Hélène ULg; Desmecht, Daniel ULg et al

in Equine Veterinary Journal. Supplement (1990), 32(9), 78-82

This study investigated some physiological responses to exercise performed by a horse during show jumping. The effects of jumping on heart rate (HR), blood lactate (LA) and some other blood values were ... [more ▼]

This study investigated some physiological responses to exercise performed by a horse during show jumping. The effects of jumping on heart rate (HR), blood lactate (LA) and some other blood values were studied in nine normal horses participating at the Belgian Junior Championship. Venous blood was sampled before and immediately after the show jumping and was analysed for packed cell volume, LA, blood glucose (GLU), total plasma protein, bicarbonate, sodium, potassium (K+), chloride, calcium and activities of plasma lactate dehydrogenase, creatine phosphokinase (CK) aspartate amino transferase and gamma glutamyl transferase (GGT). A heart rate recorder placed under the saddle allowed the continuous recording of HR from the warm-up until 2 mins after the event. The completion of the jumping induced significant changes in all values, except in K, GLU and GGT. Resting values of LA and HR were 0.53 +/- 0.05 mmol/litre and 43.9 +/- 1.9 beats/min respectively. Post exercise LA reached a mean value of 9.04 +/- 0.9 mmol/litre, and, during the jumping, HR rose to a peak of 191.4 +/- 3.8 beats/min. The results of this study demonstrate that, although the speed and duration of such an exercise are low, show jumping represents a severe exertion which requires the use of anaerobic metabolism. This implies that the training schedule of jumpers must include power training in order to improve their anaerobic capacity. [less ▲]

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See detailCystic pneumatosis of the intestine associated with bromchoemphysema.
SAKALIHASAN, Natzi ULg; DEFRAIGNE, Jean ULg; Jacquet, Nicolas

in Journal de Chirurgie (1990), (127), 359-60

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See detailLower and Middle Devonian miospore-based stratigraphy in Libya and its relation to the megafloras and faunas
Streel, Maurice ULg; Fairon-Demaret, Muriel ULg; Gerrienne, Philippe ULg et al

in Review of Palaeobotany and Palynology (1990), 66(3), 229--242

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See detailL'apprentissage des langues étrangères: Aspects psycholinguistiques
Comblain, Annick ULg; Rondal, Jean-Adolphe ULg

in Langues Etrangères (1990), 26

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See detailFronts tidaux sur le Plateau Continental Nord Ouest Européen
Djenidi, Salim ULg

in Bulletin de la Société Royale des Sciences de Liège (1990), 59(2), 205-216

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See detailLa forêt et les forestiers: réalités, nouvelles approches et défis.
Rondeux, Jacques ULg

in Annales de Gembloux (1990), 96(1), 1-19

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See detailEvidence of cardiovascular dysfunction during Pasteurella haemolytica - induced acute pneumonia in calves
Amory, Hélène ULg; Linden, Annick ULg; Desmecht, Daniel ULg et al

in Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine (1990)

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See detailThe relationship between carcass characteristics, plasma hormones and metabolites in young fattening bulls.
Istasse, Louis ULg; Van Eenaeme, Christian ULg; Gabriel, Annick ULg et al

in Veterinary Research Communications (1990), 14(1), 19-26

Six Belgian Blue bulls (double-muscled type) and six Friesian bulls were offered a fattening diet for 34 weeks. Plasma samples were obtained once a week and also every 20 min over a 24 h period, 7 weeks ... [more ▼]

Six Belgian Blue bulls (double-muscled type) and six Friesian bulls were offered a fattening diet for 34 weeks. Plasma samples were obtained once a week and also every 20 min over a 24 h period, 7 weeks before slaughter. No differences were observed between the breeds in plasma glucose, urea and free amino nitrogen concentrations, while creatinine was significantly higher in the Belgian Blue bulls. Tri-iodothyronin, tetra-iodothyronin, insulin-like growth factor 1, insulin and testosterone concentrations were higher in the Holstein group. In contrast, the Belgian Blue bulls appeared to produce more growth hormone. The slaughter weight, carcass weight, dressing percentage and proportion of lean meat were significantly higher in the Belgian Blue group. The characteristics of muscle mass (carcass weight, dressing percentage and proportion of lean meat) were positively correlated with creatinine and with the total peak area or peak amplitude of growth hormone. The insulin concentration was positively correlated with the proportion of adipose tissue in the carcass and negatively correlated with the proportion of muscle. There were no correlations between the carcass characteristics and insulin-like growth factor 1 or testosterone. No further information was provided when the ratios of the hormones were correlated with carcass characteristics. [less ▲]

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See detailLaminin and fibronectin increase the steady state level of the 67 kD high affinity metastasis-associated laminin receptor mRNA in human cancer cells.
Castronovo, Vincenzo ULg; Sobel, M. E.

in Biochemical and Biophysical Research Communications (1990), 168(3), 1110-7

Among the various known laminin binding proteins, the 67 kD high affinity laminin receptor (LR) is intimately involved during tumor invasion and metastasis. In this study, we report that laminin and ... [more ▼]

Among the various known laminin binding proteins, the 67 kD high affinity laminin receptor (LR) is intimately involved during tumor invasion and metastasis. In this study, we report that laminin and fibronectin, two attachment glycoproteins, significantly increased the total cellular level of 67 kD LR mRNA in two human cancer cell lines, T47D breast carcinoma cells and A2058 melanoma cells. Neither GRGDS nor YIGSR synthetic peptides induced such a stimulatory effect. Since the steady state level of LR mRNA has been shown to control the number of receptors expressed at the cell surface, these results suggest that contact of the cancer cells with laminin and fibronectin in the host matrix may be an important regulatory mechanism by which cancer cells maintain a high number of LR at their cell surface as they progress through the several steps of tumoral invasion and metastasis. [less ▲]

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See detailQuelques spécimens de Gosslingia breconensis (Hear) Hear, 1927 dans le Dévonien inférieur...
Gerrienne, Philippe ULg

in Annales de la Société Géologique de Belgique (1990), 113

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See detailDevelopment of a specific serological test and an efficient subunit vaccine to control bovine leukemia virus infection.
Portetelle, Daniel ULg; Burny, Arsène; Desmettre, Philippe et al

in Developments in Biological Standardization (1990), 72(3), 81-90

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See detailLes lombalgies: diagnostic différentiel
Reginster, Jean-Yves ULg; Lecart, MP

in Reuma (1990), 35

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See detailRound table on infectious bovine rhinotracheitis/infectious pustular vulvovaginitis virus infection diagnosis and control.
Ackermann, M.; Belak, S.; Bitsch, V. et al

in Veterinary Microbiology (1990), 23(1-4), 361-3

The current situation of infectious bovine rhinotracheitis/infectious pustular vulvovaginitis infection in various European countries is reviewed. Whilst some have a high serological prevalence and use ... [more ▼]

The current situation of infectious bovine rhinotracheitis/infectious pustular vulvovaginitis infection in various European countries is reviewed. Whilst some have a high serological prevalence and use live virus vaccines to control the disease, others have a low prevalence and two countries (Denmark and Switzerland) have national eradication schemes which are almost complete. Serology remains important for diagnosis although other tests such as delayed cutaneous hypersensitivity may have a role to play. New tests such as polymerase chain reaction may find increasing application where high sensitivity is required, such as the detection of virus in semen. [less ▲]

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See detailCellular Aspects of the Pathogenesis of Radiation--Induced Thymic Lymphomas in C57 Bl Mice (Review)
Boniver, Jacques ULg; Humblet, Chantal ULg; Rongy, A. M. et al

in In Vivo (Athens, Greece) (1990), 4(1, Jan-Feb), 41-3

Radiation-induced thymic lymphomas in C57Bl/Ka mice are interesting models for studying the successive steps of carcinogenesis. Irradiation initiates "preleukemic" cells, which are promoted to become ... [more ▼]

Radiation-induced thymic lymphomas in C57Bl/Ka mice are interesting models for studying the successive steps of carcinogenesis. Irradiation initiates "preleukemic" cells, which are promoted to become neoplastic. Studies in mice in which lymphoma development is inhibited by a bone marrow transplantation after irradiation suggest that radiation--induced alterations to the T cell lineage, and particularly to thymic microenvironment, are critical for the promotion of preleukemic cells. It is proposed that the lack of physiological differentiation signals within the thymus, as a result of irradiation, allows these cells to escape the normal controls of thymocyte production and pushes them towards neoplastic transformation. A disturbance in the production of cytokines may be involved, since exogenous cytokines, such as Interferon gamma or Tumor Necrosis Factor a, can inhibit radiation-induced lymphomagenesis, reproducing the effects of bone marrow transplantation. The model is thus suitable for studying the mechanisms of carcinogenesis and designing biological manipulation devoted to cancer prevention in individuals who have been exposed to oncogenic agents. [less ▲]

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See detailIDENTIFICATION OF PLACENTAL HUMAN GROWTH-HORMONE AS THE GROWTH HORMONE-V GENE-EXPRESSION PRODUCT
Frankenne, Francis ULg; Scippo, Marie-Louise ULg; Van Beeumen, Jos et al

in Journal Of Clinical Endocrinology And Metabolism (1990), 71(1), 15-18

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See detailEvaluation of preoperative use of danazol, gestrinone, lynestrenol, buserelin spray and buserelin implant, in the treatment of endometriosis associated infertility.
Donnez, Jacques; NISOLLE, Michelle ULg; Clerckx, Françoise et al

in Progress in Clinical & Biological Research (1990), 323

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See detailEtude technologique de la valorisation par lamellation de chênes indigènes de petites dimensions
Lejeune, Philippe ULg; Leclercq, André

in Bulletin des Recherches Agronomiques de Gembloux (1990), 25(3), 313-328

The authors have examined the technological feasibility of laminating small sized logs (girth at breast height between 70 and 150 cm) of European oaks (Quercus robur L. and Quercus petraea LIEBL.). This ... [more ▼]

The authors have examined the technological feasibility of laminating small sized logs (girth at breast height between 70 and 150 cm) of European oaks (Quercus robur L. and Quercus petraea LIEBL.). This technique allows indeed to produce from a low grade raw material a product able to compete with solid wood of first choice. The manufacturing of window frames has been taken as an example of the use of laminated oak. The observed output from the sawing of the experimental material seems to point out that only the logs belonging to the girth categories between 105 and 145 cm are really able to be upgraded by this process (output ranging from 19 % up to 28 %). The shrinkage measurements show that the processed raw material is characterized by a low dimensional stability. The effect of the wood species and the kind of glue on the mechanical behaviour of the product has been investigated. Oak has a lower bending strength than merbau but higher than meranti or larch from Oural. Considering the different glues used for this experiment, it has been observed that they give in "dry state" a higher shear strength than solid wood. However, moisture induces to a variable extent a strength loss for all the compared wood adhesives. [less ▲]

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See detailInfestation de chiots par Neospora Canis en Belgique et en France
Poncelet, Luc; Coignoul, Freddy ULg; Fontaine, Jacques ULg et al

in Annales de Médecine Vétérinaire (1990), (134), 167-171

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See detailThe vacuum Ultraviolet Photoabsorption and Photoelectron Spectroscopy of Fluoroethylenes. The 1,1-, cis- and trans-C2H2FCl.
Tornow, G.; Locht, Robert ULg; Kaufel, R. et al

in Chemical Physics (1990), 146

The vacuum ultraviolet absorption spectra of the three fluorochloroethene isomers were measured in the 6-13 eV photon energy range. Additionally, the HeI and NeI photoelectron spectra were recorded. The ... [more ▼]

The vacuum ultraviolet absorption spectra of the three fluorochloroethene isomers were measured in the 6-13 eV photon energy range. Additionally, the HeI and NeI photoelectron spectra were recorded. The assignment of the various photoelectron bands is based on MNDO calculations. The vaccum UV absorption spectral features were classified in terms of Rydberg series converging to the first and second ionization energy. Besides the typical pi-pi* transition, other valence transitions were observed and tentatively assigned. In the geminal isomer spectrum the dominant Rydberg series converge to the first ionization limit at 10.02 eV, in the cis and trans isomers the most intense Rydberg transitions converge to the second ionization energy at 11.87 and 12.03 eV respectively. The first ionization energies of these latter compounds, obtained by Rydberg series analysis, are 9.89 and 9.87 eV respectively. An assignment of the vibrational structure observed in both spectra is proposed. [less ▲]

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See detailRenal Autotransplantation: A Kidney-Saving Procedure
VAN DAMME, Hendrik ULg; Defraigne, Jean-Olivier ULg; CREEMERS, Etienne ULg et al

in Acta Chirurgica Belgica (1990), 90(2), 54-8

The authors report their recent experience with renal autotransplantation (3 cases). In one case it concerned a complex aneurysm of the renal artery involving secondary arterial renal branches, and ... [more ▼]

The authors report their recent experience with renal autotransplantation (3 cases). In one case it concerned a complex aneurysm of the renal artery involving secondary arterial renal branches, and associated with hydronephrosis (case 1); another patient presented a high ureteral injury unsuccessfully repaired by previous surgery (case 2), and the third patient had diffuse fibrodysplasia of intrahilar arterial branches (case 3). The procedures were technically successful and gave good functional results. They describe the technique of kidney refrigeration, extracorporeal vessel repair and ureteral preservation or reimplantation. Indications and technical advantages of this organ-saving reconstructive approach are discussed. [less ▲]

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See detailTriiodothyronine inhibits transcription from the human growth hormone promoter
Morin, A.; Louette, J.; Voz, Marianne ULg et al

in Molecular & Cellular Endocrinology (1990), 71(3), 261-7

Three DNA constructs, the natural human growth hormone gene (hGH-hGH) its 500 bp promoter linked to the chloramphenicol acetyl transferase reporter gene (hGH-CAT), and its structural part linked to the ... [more ▼]

Three DNA constructs, the natural human growth hormone gene (hGH-hGH) its 500 bp promoter linked to the chloramphenicol acetyl transferase reporter gene (hGH-CAT), and its structural part linked to the herpes virus thymidine kinase promoter (TK-hGH) were introduced into rat pituitary GC cells by DEAE-dextran transfection. Transient expression was followed as a function of triiodothyronine (T3) concentration. The hGH-CAT expression was specifically inhibited by T3 following a typical dose-response curve while hGH-GH gene expression was not significantly modified. The transient expression of TK-hGH increased as a function of T3 concentration. These results indicate that T3 exerts two opposite effects on hGH gene expression. First, it down-regulates expression by acting on the promoter; second, it up-regulates expression by acting on the structural part of the gene. These action could be due to regulation of transcription and mRNA stabilization, respectively. [less ▲]

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See detailExpression in Escherichia coli of two mutated genes encoding the cholera toxin B subunit
L'Hoir, C.; Renard, A.; Martial, Joseph ULg

in Gene (1990), 89(1), 47-52

To allow subsequent genetically mediated fusion of foreign antigens to cholera toxin B subunit (CTB), two mutated CTB encoding genes (ctxB) were constructed and overexpressed in Escherichia coli. The ... [more ▼]

To allow subsequent genetically mediated fusion of foreign antigens to cholera toxin B subunit (CTB), two mutated CTB encoding genes (ctxB) were constructed and overexpressed in Escherichia coli. The signal peptide coding sequence was deleted and restriction sites were created at both ends of the modified sequence. Both synthesized CTBs contain additional amino acid(s) at the N terminus (one and three). They were purified as insoluble products and refolded into the natural pentameric CTB structure by a denaturation-renaturation cycle. After renaturation, both recombinant proteins recovered CTB antigenicity and the ability to bind to GM1 gangliosides, as shown by in vitro analysis. Preliminary data indicated that both properties were unaltered by fusion of a foreign peptide to the mutated CTBs. [less ▲]

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See detailHealth effects of environmental exposure to cadmium: objectives, design and organization of the Cadmibel
Lauwerys, Robert; Amery, Antoon; Bernard, Alfred et al

in Environmental Health Perspectives (1990), 87

Cadmium is a cumulative environmental pollutant. For the general population mainly exposed by the oral route and through tobacco smoke inhalation, the kidney is the critical organ. Belgium is the ... [more ▼]

Cadmium is a cumulative environmental pollutant. For the general population mainly exposed by the oral route and through tobacco smoke inhalation, the kidney is the critical organ. Belgium is the principal producer of cadmium in Europe, and certain areas of the country are polluted by cadmium mainly because of past emissions from nonferrous industries. Preliminary studies carried out in one polluted area have suggested that environmental pollution might lead to an increased uptake of cadmium by the human body and possibly to health effects. Thus, a large-scale morbidity study has been initiated to assess the validity of this hypothesis. The present paper describes the protocol of this study. Its main objectives are to determine to what extent environmental exposure to cadmium resulting from industrial emissions may lead to accumulation of the metal in the human organism; to establish whether or not environmental exposure may induce renal changes and/or influence blood pressure; and to assess the acceptable internal dose of cadmium for the genral population. The study design takes advantage of the fact that biological indicators of exposure, body burden, and early nephrotoxic effects of cadmium ar available, which increase the likelihood of detecting a cause-effect relationship. [less ▲]

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See detailNeodymium: YAG laser hysteroscopy in large submucous fibroids.
Donnez, Jacques; Gillerot, Stéphane; Bourgonjon, Damien et al

in Fertility and Sterility (1990), 54(6), 999-1003

The preoperative use of a potent, subcutaneously injected gonadotropin-releasing hormone agonist (GnRH-a) was evaluated in a series of 60 women with large submucosal fibroids. Myomectomy by hysteroscopy ... [more ▼]

The preoperative use of a potent, subcutaneously injected gonadotropin-releasing hormone agonist (GnRH-a) was evaluated in a series of 60 women with large submucosal fibroids. Myomectomy by hysteroscopy and Nd:YAG laser was easily performed. In 12 cases, the largest portion of the myoma was not inside the uterine cavity and myomectomy was carried by a two-step hysteroscopy. In women who wished to become pregnant, a pregnancy rate of 66% was achieved. Advantages of preoperative use of a GnRH-a are (1) the significant decrease of the fibroid size, (2) a lower fluid absorption, and (3) the restoration of a normal hemoglobin concentration. [less ▲]

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See detailLe point sur les methodes de lutte contre les ravageurs des grains entreposes en Belgique.
Schiffers, Bruno ULg; Haubruge, Eric ULg; Mahaut, T. et al

in Parasitica (1990), 46(4),

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See detailPromenade liégeoise dans l'Eighteenth Century Short Title Catalogue
Droixhe, Daniel ULg

in Bulletin de la Société Royale Le Vieux-Liège (1990), 250

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See detailLe saccharose: un passe ... vers quel avenir?
Thonart, Philippe ULg; Destain, Jacqueline ULg; Sandron, P. et al

in Annales de Gembloux (1990), 96(2), 87-174

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See detailElaboration et utilisation de logiciels interactifs pour l'analyse d'essais et de démonstrations phytosanitaires
Gharby, A.; Sghaier, T.; Claustriaux, Jean-Jacques ULg et al

in Tropicultura (1990), 8(3), 144-146

The preparation and utilization of interactive softwares regarding the using of data from agrochemical experiments and demonstrative trials in Tunisia are shortly described. The working methods on data ... [more ▼]

The preparation and utilization of interactive softwares regarding the using of data from agrochemical experiments and demonstrative trials in Tunisia are shortly described. The working methods on data are specified, more particularly those about statistical and economical analysis as well as the weeds analysis methods. Trials of pluriannual experiments are also described. [less ▲]

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See detailConcept de filière, économie agro-alimentaire et développement.
Lebailly, Philippe ULg

in Tropicultura (1990), 8(1), 9-14

The subsector represents a meaningful and manageable division specially adapted to comprehensive investigation on agro-industrial systems. The food subsector studies permits an integrated approach of ... [more ▼]

The subsector represents a meaningful and manageable division specially adapted to comprehensive investigation on agro-industrial systems. The food subsector studies permits an integrated approach of problems linked with production development in Third World countries. The author of this paper, after having determined the concepts in relation with the subsector from theoretical point of vue presents the generaI characteristics of successful agro-industrial systems in developing countries and proposes a methodology to appreciate the competitivity of subsectors. [less ▲]

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See detailErythropoietine: utilisation diagnostique et therapeutique.
Beguin, Yves ULg; Fillet, Georges ULg

in Revue Médicale de Liège (1990), 45(6), 261-7

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See detailEffects of dietary carbohydrate composition on rumen fermentation, plasma hormone and metabolites in growing fattening bull
Van Eenaeme, Christian ULg; Istasse, Louis ULg; Gabriel, Annick ULg et al

in Animal Production (1990), 50

A finishing diet containing barley and sugarbeet pulp 500:200 or 200:500 g/kg was given to 12 bulls twice daily at 08.00 and 16.00 h. The high-pulp diet increased rumen acetic and butyric acids and ... [more ▼]

A finishing diet containing barley and sugarbeet pulp 500:200 or 200:500 g/kg was given to 12 bulls twice daily at 08.00 and 16.00 h. The high-pulp diet increased rumen acetic and butyric acids and decreased propionic acid compared with the high-barley diet. The diurnal patterns over a 24-h period of rumen pH, volatile fatty acids, glucose and ammonia were characterized by 2 cycles. The high-pulp induced more even fermentations as indicated by flatter curves with less extreme values than those produced by high-barley diet. Ammonia concentration was high before feeding and decreased subsequently during 4 to 6 h after the meal. No typical patterns were observed in plasma concentrations of glucose and alpha-amino nitrogen. Plasma urea concentration increased 2 h after feeding and dropped during the following 6 to 8 h. There were no effects of dietary carbohydrate composition on growth hormone concentration but plasma insulin was significantly reduced with the high-pulp diet. Furthermore, the insulin profile showed peaks after each meal with the high-barley diet but only after the afternoon feeding with the high-pulp diet. [less ▲]

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See detailDétermination des lois de variation des coefficients de masse d'eau ajoutée relatifs à des carènes en mouvement uniformément accéléré
Marchal, Jean ULg

in Bulletin de l'Association Technique Maritime et Française (1990)

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See detailInjection of Sulbutiamine Induces an Increase in Thiamine Triphosphate in Rat Tissues
Bettendorff, Lucien ULg; Weekers, Laurent ULg; Wins, Pierre et al

in Biochemical Pharmacology (1990), 40(11), 2557-2560

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See detailReactivation of HIV-1 after an oxidative stress
Piette, Jacques ULg; Legrand-Poels, Sylvie; Vaira, Dolorès ULg et al

in Free Radicals in Biology and Medicine (1990), 9(Suppl. A), 5

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See detailWhither dynamic state estimation ?
Rousseaux, Patricia ULg; Van Cutsem, Thierry ULg; Dy Liacco, Tom

in International Journal of Electrical Power & Energy Systems (1990), 12(2), 104-116

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See detailCooperation Between Bovine Leukemia-Virus Transactivator Protein And Ha-Ras Oncogene Product In Cellular-Transformation
Willems, Luc ULg; Heremans, H.; Chen, G. et al

in Embo Journal (1990), 9(5),

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See detailValidation of Structural Computation Codes in Elastoviscoplasticity
Benallal, A.; Chabrand, P.; Ghazouane, P. et al

in International Journal for Numerical Methods in Engineering (1990), 29

This paper discusses various procedures for the implementation of viscoplastic constitutive equations in Finite Element Codes. The set of constitutive equations that has been used is described. Several ... [more ▼]

This paper discusses various procedures for the implementation of viscoplastic constitutive equations in Finite Element Codes. The set of constitutive equations that has been used is described. Several kinds of implementation, using various numerical techniques, are proposed. Validations of these implementations and comparisons between them are investigated by means of a set of simple but comprehensive examples [less ▲]

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See detailEncapsulation de l'albumine de serum de boeuf par procédé de double emulsion/évaporation
Nihant, Nicole; Grandfils, Christian ULg; Jérôme, Robert ULg et al

in Journal de Pharmacie de Belgique (1990), 6

Bien que la découverte des doubles émulsions remonte à la fin du siècle dernier, c'est seulement depuis quelques dizaines d'années qu'on observe un regain d'intérêts pour ces émulsions, notamment en ... [more ▼]

Bien que la découverte des doubles émulsions remonte à la fin du siècle dernier, c'est seulement depuis quelques dizaines d'années qu'on observe un regain d'intérêts pour ces émulsions, notamment en galénique moderne. En particulier, les émulsions eau dans huile dans eau (w/o/w) sont utilisées pour produire des microparticules solides en vue d'immobiliser un principe actif hydrosoluble. [less ▲]

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See detailPatterns of regenerating structures in beet calli.
Carels, N.; Lepoivre, Philippe ULg; Dekegel, D. et al

in Bulletin des Recherches Agronomiques de Gembloux (1990), 25(4),

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See detailLe décor des bâtons percés paléolithiques
Noiret, Pierre ULg

in Art&Fact (1990), 9

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See detailCombined One Stage Cardiac and Pulmonary Surgery by Median Sternotomy
Adant, J. P.; Defraigne, Jean-Olivier ULg; Limet, Raymond ULg

in Acta Chirurgica Belgica (1990), 90(4), 197-202

From 1985 to 1989, 6 patients underwent a pulmonary surgical procedure simultaneously with a cardiac operation. All patients were male with a mean age of 60 +/- 8 years. The cardiac procedures included: 1 ... [more ▼]

From 1985 to 1989, 6 patients underwent a pulmonary surgical procedure simultaneously with a cardiac operation. All patients were male with a mean age of 60 +/- 8 years. The cardiac procedures included: 1 aortic and 1 mitral valve replacement, 3 coronary artery bypass grafts and 1 closure of an atrial septal defect. Four patients had primary pulmonary nodules: 2 bronchogenic carcinomas and 2 benign hamartomas. They presented with cardiac symptoms, and lung nodules were incidentally found on preoperative Chest X-Rays. The 2 last patients had pulmonary metastases of colonic neoplasms previously resected, respectively 3 and 6 years before. After completion of the cardiac procedures, during the rewarming of the patient, the pulmonary resection was performed on a deflated lung, via the median sternotomy. Pulmonary procedures included: right upper segmentectomy (n = 1), left pneumonectomy (n = 1), left interior lobectomy (n = 1), right middle lobectomy (n = 1), left upper wedge resection (n = 1), and right upper lobe wedge resection (n = 1). All patients were extubated on day one. One patient died from rythm disturbances on day 13. All other patients are alive with a mean survival of 30 months. The authors conclude that combined surgery is feasible in selected cases. Sternal approach is not a limitation to pulmonary resection. [less ▲]

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See detailAnimal performance, plasma hormones and metabolites in Holstein and Belgian Blue growing-fattening bulls.
Istasse, Louis ULg; Van Eenaeme, Christian ULg; Evrard, Pierre et al

in Journal of Animal Science (1990), 68(9), 2666-73

Six Holstein (light-muscled type) and six Belgian Blue bulls (double-muscled type) were fed a finishing diet. Average daily gain was 1.36 kg for the Holstein bulls vs 1.24 kg for the Belgian Blue bulls (P ... [more ▼]

Six Holstein (light-muscled type) and six Belgian Blue bulls (double-muscled type) were fed a finishing diet. Average daily gain was 1.36 kg for the Holstein bulls vs 1.24 kg for the Belgian Blue bulls (P less than .05). Holstein bulls consumed more feed (2.3 vs 1.8 kg/100 kg body weight, P less than .001) than the Belgian Blue bulls. The dressing percentage (55.4 vs 65.8%, P less than .001) and the proportion of muscle (56.1 vs 71.3%, P less than .001) in the carcass were less, whereas the proportions of adipose tissue (28.3 vs 15.4%, P less than .001) and bone (15.7 vs 13.4%, P less than .05) were higher in the Holstein bulls. Plasma creatinine determined in samples obtained once a week was lower (11.0 vs 20.3 mg/liter, P less than .001) in the Holstein bulls. In contrast, Holstein bulls tended to produce more triiodothyronine (2.3 vs 1.8 nM, P less than .10), tetraiodothyronine (71.9 vs 54.7 nM, P less than .10) and insulin-like growth factor I (IGF-I; 340 vs 205 ng/ml, P less than .20) than the Belgian Blue bulls. Growth hormone, insulin, IGF-I and testosterone were measured at 20-min intervals during two 24-h periods. In wk 6, Holstein bulls tended to produce more growth hormone than the Belgian Blues, as indicated by higher total peak area (3,185 vs 2,431 ng), peak amplitude (34.1 vs 22.6 ng/ml, P less than .10) and baseline (4.6 vs 3.3 ng/ml, P less than .20). In wk 27, the trends were opposite.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailFinancial Equilibrium and Risk Aversion in French Workers’ Cooperatives
Defourny, Jacques ULg

in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (1990), 61(2-3), 331-351

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See detailThe coding region for the 54-kDa protein of several pestiviruses lacks host insertions but reveals a "zinc finger-like" domain
De Moerlooze, L.; Desport, M.; Renard, A. et al

in Virology (1990), 177(2), 812-5

We sequenced cDNAs, amplified by the polymerase chain reaction (PCR), which correspond to the carboxy-terminal portion of the 54-kDa protein of various cytopathic (cp) or noncytopathic (ncp) pestiviral ... [more ▼]

We sequenced cDNAs, amplified by the polymerase chain reaction (PCR), which correspond to the carboxy-terminal portion of the 54-kDa protein of various cytopathic (cp) or noncytopathic (ncp) pestiviral strains. Except for the previously described insertions in two cp strains of the bovine viral diarrhea virus (BVDV), we did not find comparable insertions in this gene in eight pestiviral strains. The predicted amino acid sequences of this 54-kDa protein portion contain a conserved cysteine-rich stretch remarkably similar to a "zinc finger-type" binding domain found in many gene-regulatory proteins. Thus, this protein may be involved in the binding to viral RNA. [less ▲]

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See detailCoronary Artery Reoperations
VAN DAMME, Hendrik ULg; CREEMERS, Etienne ULg; DEKOSTER, Guy ULg et al

in Journal of Cardiovascular Surgery (The) (1990), 31(3), 255-62

From June 1976 to June 1989, 138 previously revascularized coronary patients were reoperated upon. This represents 3.28% of all aortocoronary bypass procedures performed during the same period in our ... [more ▼]

From June 1976 to June 1989, 138 previously revascularized coronary patients were reoperated upon. This represents 3.28% of all aortocoronary bypass procedures performed during the same period in our institution. Characteristics of this group, risk factors, coronarographic data, perioperative morbidity and mortality are analyzed and compared to the data of the general population undergoing bypass surgery. The mean age of individuals requiring reoperation was 59 years. The mean interval between the two operations reached 73 months (5 to 180 months). Angiographic lesions were more extensive with three-vessel disease in 65% of the reoperated patients. The mean ejection fraction was 55%. A mean of 2.1 bypass grafts per patient were inserted with 60% of cases having an internal mammary artery graft. Perioperative infarction occurred in 8.0% of the reoperations and an intraaortic balloon counterpulsation was necessary in 4.3% at the end of the procedure. Operative mortality was 5%. Symptomatic improvement was obtained in 85% of the cases. In recent years, cardiac transplantation has been performed for 11 previously bypassed patients with severely impaired ventricular function. There were no postoperative deaths. Cardiac transplantation can be considered as a more valuable alternative to repeat coronary artery bypass grafting in such cases. [less ▲]

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See detailAttitude face au choix vocationnel chez des adolescents maghrébins: Dynamique conflictuelle à travers T.A.T. et Rorschach
Crasson, Marion ULg; Stassart, Martine ULg; Timsit, M.

in Bulletin de Psychologie (1990), 43(396), 705-715

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See detailSerum immunoreactive erythropoietin during pregnancy and in the early postpartum.
Beguin, Yves ULg; Lipscei, G.; Oris, Renée ULg et al

in British Journal of Haematology (1990), 76(4), 545-9

We studied 209 women during normal pregnancy, at delivery, or in the early postpartum, to determine whether erythropoietin (EPO) response was appropriate for the degree of anaemia. Serum immunoreactive ... [more ▼]

We studied 209 women during normal pregnancy, at delivery, or in the early postpartum, to determine whether erythropoietin (EPO) response was appropriate for the degree of anaemia. Serum immunoreactive EPO was measured in 74 nonpregnant women, including 33 normal subjects (16.4 +/- 4.1 mU/ml) and 41 women with hypoplastic, haemolytic, dyserythropoietic, or iron-deficient anaemia. An inverse linear relationship (R = -0.88, P less than 0.0001) between log(EPO) and Hct was observed. Predicted EPO values were derived for each Hct and an O/P ratio of observed/predicted log(EPO) was calculated for each sample (1.00 +/- 0.10, range 0.80-1.20). Serum EPO levels (mU/ml) were significantly higher during pregnancy (30 +/- 16, n = 142), at delivery (31 +/- 16, n = 41), and on day 7 postpartum (37 +/- 35, n = 26) than in normal women (P less than 0.001). EPO levels increased steadily from 18 +/- 6 mU/ml in the first, to 26 +/- 14 mU/ml in the second, and to 35 +/- 18 mU/ml in the third trimester (P less than 0.0001). The O/P ratio was normal on day 7 postpartum (1.01 +/- 0.16), at delivery (1.03 +/- 0.16), and in the third trimester (0.96 +/- 0.15), but was significantly reduced in the first two trimesters (0.88 +/- 0.15, P less than 0.001). A significant negative correlation between log(EPO) and Hct was lacking in the first two trimesters, was present but with a reduced slope during the third trimester and at delivery, and was normal postpartum. We conclude that EPO response to anaemia is impaired in early pregnancy, recovers in late pregnancy, and normalizes rapidly in the postpartum. [less ▲]

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See detail195au Biokinetics and Dosimetry
Brihaye, C.; Guillaume, Marcel

in European Journal of Nuclear Medicine (1990), 16(4-6), 369-71

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