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See detailEcologie de la loutre dans le Marais Poitevin III. Variations du régime et tactique alimentaire.
Libois, Roland ULg; Rosoux, René; Delooz, Etienne

in Cahiers d'Ethologie (1991), 11(1), 31-50

During the spring 1988, spraint samples were collected on the banks of 3 watercourses (one river and two canals) crossing the Marais Poitevin. Their general characteristics (flow rate, conductivity ... [more ▼]

During the spring 1988, spraint samples were collected on the banks of 3 watercourses (one river and two canals) crossing the Marais Poitevin. Their general characteristics (flow rate, conductivity, hydrographic regime) are quite different. The fish community of the two canals was sampled by electrofishing and we estimated the relative abundance of the different fish species. After a check of the reliability of our spraint analysis technique (feeding trials with captive otters), we made an estimate of the relative abundance of the prey items in the otters diet and an assessment of the length and of the weight of each individual fish preyed upon. They are indeed very strong length-weight correlations in fish and also close relationships between the length of some skull bones and the total length od a fish. The diet is mostly made up by the eel. It comprises also a great variety of other fish species, nearly all that were observend in the habitat. Much frogs, some snakes, birds, mammals, insects and crustaceans were also discovered. They are only slight diet differences between the main watercourses which probably are related to the characteristics of their fish fauna (e.g. much more sticklebacks when waters are becoming brackish; big amount of Atherina in salt marshes). No marked variations were found during a normal summer but fish is obviously less eaten during a severe drought. Comparing the frequency-distributions of fish in the diet and in the habitat, we found no selective predation in respect with fish (eel, cyprinids) size. From that point of view, the otter display a generalistic-opportunistic pattern of foraging. As far as the relative abundance of the various species is considered, otters take much less roaches and much more eels and tenches than present in the habitat. It remains to be seen if that is the consequence of a 'deliberate choice' or of a peculiar way of underwater huntig. A fact is that the otter principally eats bottom living fishes. [less ▲]

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See detailManagement of small woods in Belgium.
Rondeux, Jacques ULg

in Quarterly Journal of Forestry (1991), 85(1), 37-42

In Belgium, forest occupies 20 per cent of the total land area. Private forests account for about 52 per cent; they are generally small (averaging about three ha) and their owners are not accustomed to ... [more ▼]

In Belgium, forest occupies 20 per cent of the total land area. Private forests account for about 52 per cent; they are generally small (averaging about three ha) and their owners are not accustomed to basing their decisions on a management plan. However, some attempts to develop co-operation through forestry associations exist and the regional authorities tend to encourage them. Whatever the details of any possible future legislation may be, the principal aim must be the development and introduction of an extremely simple form of management plan (the so-called 'plan simple de gestion') in exchange for assistance to the private owner. [less ▲]

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See detailUne note de l'Essai sur l'origine des langues de Jean-Jacques Rousseau. Analyse textuelle
Tilkin, Françoise ULg

in Espace pour un humanisme européen (1991), 8

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See detailConvergence variationnelle et opérateurs maximaux monotones d'un espace de Hilbert réel
Tossings, Patricia ULg

in Bulletin de la Société Royale des Sciences de Liège (1991), 60(2), 103-132

Following an idea due to H. Attouch and R.J.B. Wets in the context of variational convergence theory and convex optimization, we introduce, on the set of maximal monotone operators on a real Hilbert space ... [more ▼]

Following an idea due to H. Attouch and R.J.B. Wets in the context of variational convergence theory and convex optimization, we introduce, on the set of maximal monotone operators on a real Hilbert space, a parametric semi-distance, which induces a stronger notion of convergence than the graph convergence. This metric is fundamental in the theoretical study of algorithms for searching a zero of a maximal monotone operator on a real Hilbert space. [less ▲]

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See detailJulian Key
Duchesne, Jean-Patrick ULg

in Sint-Lukasgalerij (1991), 2

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See detailHow do preschool teacher's requests influence children's behaviors ?
Crahay, Marcel ULg; Delhaxhe, Arlette

in Teaching & Teacher Education (1991), 7(3), 221-239

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See detailPAF receptor and cache-oreilles effect. Simple PAF antagonists
Lamotte-Brasseur, Josette; Heymans, Françoise; Dive, Georges ULg et al

in Lipids (1991), 26(12), 1167-1171

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See detailGranulomatous rosacea and demodicidosis
Kharfi, M.; Zarrouk, H.; Nikkels, Arjen ULg et al

in African journal of Dermatology (1991), 4(2), 39-43

Granulomatous rosacea is a rare disease sometimes mistaken for sarcoidosis or tuberculosis. We briefly review the historical evolution of the concept of this disease. We document this study with twelve ... [more ▼]

Granulomatous rosacea is a rare disease sometimes mistaken for sarcoidosis or tuberculosis. We briefly review the historical evolution of the concept of this disease. We document this study with twelve clinico-pathological confrontations, and we emphasize the resemblance with granulomatous demodicidosis. [less ▲]

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See detailMaladie de Crohn : de l'immunopathologie aux perspectives thérapeutiques
Louis, Edouard ULg; Belaiche, Jacques ULg

in Médecine et Hygiène (1991), 49

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See detailMechanical Properties of the Isolated Equine Trachea
Art, Tatiana ULg; Lekeux, Pierre ULg

in Research in Veterinary Science (1991), 51(1), 55-60

In order to study the in vitro mechanical properties of the equine trachea submitted to the compressive pressures observed in vivo, the pressure-volume relationship was determined in intra- and extra ... [more ▼]

In order to study the in vitro mechanical properties of the equine trachea submitted to the compressive pressures observed in vivo, the pressure-volume relationship was determined in intra- and extra-thoracic tracheal segments taken post mortem from 29 healthy horses (one to 15 years old; 352 to 651 kg). At the same time, the cross-sectional lumen area (X-SA) at the mid-point of the segment was measured using a slit-lamp transillumination and photographic measurement by endoscopy. The tracheal specific compliance (Cs) as well as the relative changes in X-SA and in the sagittal and transverse diameters, for intraluminal pressures from 5 to - 5 kPa, were calculated. The extrathoracic tracheal Cs was 0.060 +/- 0.002 kPa-1 and, at an intraluminal pressure of - 5 kPa, X-SA was reduced to about 73 per cent of its resting value. The intrathoracic segments were more compliant and, at similar compressive pressure, their X-SA was more reduced. These data show that the equine tracheal compliance is high and suggest that the increase in pulmonary resistance observed during strenuous exercise may be partly explained by a partial tracheal collapse. [less ▲]

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See detailL’ordinateur pour apprendre le latin
Denooz, Joseph ULg

in EVPRHOSYNE (1991), 19

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See detailLes restes anthracologiques du Titelberg.
Gerrienne, Philippe ULg; Fairon-Demaret, Muriel ULg

in Bulletin de la Société Préhistorique du Luxembourg (1991), 13

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See detailEfficacité productive et rendements d'échelle dans les banques belges
Gathon, Henry-Jean ULg; Grosjean, Fabienne

in Cahiers Economiques de Bruxelles (1991), 130(Summer), 145-160

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See detailTransplantation cardiaque. Mise à jour à partir de notre expérience
DEFRAIGNE, Jean ULg; Demoulin, J. C.; Limet, Raymond ULg

in Revue Médicale de Liège (1991), 46(6), 314-28

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See detailCirculating erythropoietin levels after bone marrow transplantation: inappropriate response to anemia in allogeneic transplants.
Beguin, Yves ULg; Clemons, G. K.; Oris, Renée ULg et al

in Blood (1991), 77(4), 868-73

We studied 24 recipients of autologous bone marrow transplantation (ABMT) or allogeneic BMT (BMT) to determine whether impaired erythropoietin (Epo) response to anemia could delay full erythropoietic ... [more ▼]

We studied 24 recipients of autologous bone marrow transplantation (ABMT) or allogeneic BMT (BMT) to determine whether impaired erythropoietin (Epo) response to anemia could delay full erythropoietic recovery. Observed Epo levels were compared with predicted levels based on the relationship between Epo and hematocrit in 125 control subjects. Circulating Epo levels were normal during conditioning and the early posttransplant period. Between days 21 and 180, Epo levels remained normal in ABMT patients but were inappropriately low for the degree of anemia in BMT patients. Median time to full erythropoietic engraftment was longer in BMT than in ABMT recipients. Circulating Epo returned to appropriate levels after day 180, except in patients with active cytomegalovirus infection. We conclude that impaired Epo response to anemia can contribute to delayed erythropoietic recovery after allogenic BMT. Renal toxicity of ciclosporin, interaction between host and donor marrow, and cytomegalovirus infection might play a role. This study could support the use of recombinant human Epo to accelerate erythropoietic engraftment after BMT. [less ▲]

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See detailLove in a Post-Cultural Ditch: Janet Frame
Delrez, Marc ULg

in Kunapipi : Journal of Postcolonial Writing (1991), XIII(3), 108-116

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See detailThe stratigraphy of the Middle Devonian in Belgium
Bultynck, P; Coen-Aubert, M; Godefroid, J et al

in Memoirs of the Geological Survey of Belgium (1991), 30

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See detailThe seismic cataclysm of 29 March 1000 : genesis of a mistake
Alexandre, Pierre ULg

in Tectonophysics (1991), 193

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See detailLaminin binding and internalization by human and murine mammary gland cell lines in vitro.
Coopman, P. J.; Nuydens, R.; Leunissen, J. et al

in European Journal of Cell Biology (1991), 56(2), 251-9

We have studied the binding and internalization of Engelbreth-Holm-Swarm mouse sarcoma laminin labeled with colloidal gold (LN-G40) by human and murine mammary gland cell lines. Interactions between the ... [more ▼]

We have studied the binding and internalization of Engelbreth-Holm-Swarm mouse sarcoma laminin labeled with colloidal gold (LN-G40) by human and murine mammary gland cell lines. Interactions between the LN-G40 probe and the cells spread on a glass coverslip were monitored with video-enhanced contrast microscopy (Nanovid). Transmission electron microscopy allowed the quantitation of the LN-G40 probe at various cellular locations. During the first 15 min, a homogeneous binding of LN-G40 probe to the cell surface was observed with all cell lines. This binding did not occur with gold particles that were not conjugated to laminin. Then, the LN-G40 probe began to cluster on the cell surface and was, during the following 20 h, internalized by pits that were not coated. In the cells, the LN-G40 probe sometimes showed saltatory movements along linear tracks. The LN-G40 probe was intracellularly found in vesicles, multivesicular bodies, cisternal structures, and lysosomes, suggesting the degradation of the internalized laminin. However, not all cell surface-bound LN-G40 probe was internalized after 20 h. Differences between the cell lines were quantitative, but no clear correlation could be made between migration of cells on laminin and internalization of laminin. [less ▲]

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See detailCalcul de la propagation d'une onde de rupture de barrage
Pirotton, Michel ULg

in Tribune de l'Eau (La) (1991), 44(551), 23-31

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See detailMyeloperoxidase and elastase as markers of leukocyte activation during cardiopulmonary bypass in humans
Faymonville, Marie ULg; Pincemail, Joël ULg; Duchateau, J. et al

in Journal of Thoracic and Cardiovascular Surgery (The) (1991), 102

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See detailIntérêt de l'électromyostimulation de basse fréquence dans la rééducation du quadriceps
Constant, T.; Vanderthommen, Marc ULg

in STAPS : Revue Internationale des Sciences du Sport et de l'Education Physique (1991), 24

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See detailNEW ROTATIONAL ANALYSIS OF THE ALPHA-1-PI-CHI-1-SIGMA+ TRANSITION OF ALBR
BREDOHL, Harald; DUBOIS, Iwan; Mahieu, Emmanuel ULg et al

in Journal of Molecular Spectroscopy (1991), 145(1), 12-17

Twenty-eight bands of the A1Π-X1Σ+ transition have been fully analyzed. The vibrational constants obtained for the A1Π state do not agree with earlier data. On the other hand the observations suggest that ... [more ▼]

Twenty-eight bands of the A1Π-X1Σ+ transition have been fully analyzed. The vibrational constants obtained for the A1Π state do not agree with earlier data. On the other hand the observations suggest that the conclusion about the predissociation ought to be revised. [less ▲]

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See detailDe la raison à l'imaginaire:méthode et recherche de sens
Robert, Jocelyne ULg

in Revue de l'Institut de Sociologie (1991)

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See detailInfluence of basement membrane molecules on directional migration of human breast cell lines in vitro.
Coopman, P. J.; Bracke, M. E.; Lissitzky, J. C. et al

in Journal of Cell Science (1991), 98(Pt 3), 395-401

Spheroidal cell aggregates were prepared from four tumorigenic human breast cell lines (HBL-100 and three MCF-7 variants). Cells from these aggregates were allowed to migrate towards lanes of basement ... [more ▼]

Spheroidal cell aggregates were prepared from four tumorigenic human breast cell lines (HBL-100 and three MCF-7 variants). Cells from these aggregates were allowed to migrate towards lanes of basement membrane components coated on a glass substratum. Matrigel (reconstituted basement membrane) lanes permanently arrested the migration of one MCF-7 cell line, while migration of the others was permitted. Amongst several purified basement membrane constituents only laminin, not collagen type IV or fibronectin, was found to cause the same arrest of migration. Within the laminin molecule only the pepsin P1, not the elastase E8 fragment, efficiently arrested migration of that cell line. Although migration was inhibited by these components, time-lapse video recordings revealed that arrested cells still proliferated and actively ruffled on top of the coatings. These data suggest that, amongst several basement membrane components, laminin can function as a stop signal for cell migration. Within laminin, this activity seems to be mainly associated with the P1 fragment. We conclude that laminin is the major determinant of the barrier-function of the basement membrane, to which some cell types have become insensitive. [less ▲]

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See detailContinuous Measurement of Jugular Venous Bulb Oxygen Saturation in Neurosurgical Patients
Hans, Pol ULg; Franssen, Colette ULg; Damas, François ULg et al

in Acta Anaesthesiologica Belgica (1991), 42(4), 213-8

Monitoring cerebral oxygen availability and utilization is of the utmost importance for patients with brain insults or potentially at risk of brain oxygen deprivation. The availability of the continuous ... [more ▼]

Monitoring cerebral oxygen availability and utilization is of the utmost importance for patients with brain insults or potentially at risk of brain oxygen deprivation. The availability of the continuous measurement of oxygen saturation in the jugular bulb questions the value of this parameter as an indicator of brain oxygenation. This article reviews the theoretical background and the practical aspects of this monitoring. It describes its possible applications to neurosurgical patients in the operating theater as well as in the intensive therapy unit. Finally, it comments on its main limitations which could impede an extensive utilization in clinical practice. [less ▲]

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See detailThérapeutique des pathologies respiratoires aiguës des bovins
Lekeux, Pierre ULg; Gustin, Pascal ULg; Desmecht, Daniel ULg et al

in Annales de Médecine Vétérinaire (1991), 135

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See detailPneumonie vermineuse caprine à Mulerius capillaris : étude des paramètres de la fonction pulmonaire
Bakima, M.; Arendt, J.; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1991), 131

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See detailUltrastructural demonstration of histamine in human enterochromaffin like cell granules.
Delwaide, Jean ULg; Vivario, M.; Belaiche, Jacques ULg et al

in Gut (1991), 32(7), 834

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See detailCompte rendu de R.C. Maulitz, D.E. Long, Grand Rounds. One Hundred Years of Internal Medicine, Philadelphie, 1988
Marganne, Marie-Hélène ULg

in Archives Internationales d'Histoire des Sciences (1991), 41

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See detailCaractéristiques hygrométriques et niveau de pollution de l'air dans 9 locaux en porcherie d'élevage
Debliquy, P.; Nicks, Baudouin ULg; Canart, Bernard et al

in Annales de Médecine Vétérinaire (1991), 135

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See detailL'éducation des jeunes enfants au seuil de l'ère technologique
de Landsheere, Gilbert ULg

in Communication et Langages (1991), (89), 31-36

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See detailMetal Forming Analysis via Eulerian-Lagrangian FEM with Adaptive Mesh
Hogge, Michel ULg; Ponthot, Jean-Philippe ULg

in Latin American Research Review (1991), 21

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See detailTransition rates and wavelengths in the X-ray spectra of nickel-like ions (Ag XX - Pb LV)
Quinet, Pascal ULg; Biémont, E

in Physica Scripta (1991), 43

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See detailModélisation moléculaire de l'usambarensine, de la tubulosine et de l'émétine, alcaloïdes cytotoxiques et antiamibiens
Quetin-Leclercq, J.; Dupont, Léon ULg; Wright, C. W. et al

in Journal de Pharmacie de Belgique (1991), 46(2, Mar-Apr), 85-92

The analyses of the different possible conformations of usambarensine, tubulosine and emetine, which possess interesting cytotoxic and amoebicide properties showed us that they cannot take the planar ... [more ▼]

The analyses of the different possible conformations of usambarensine, tubulosine and emetine, which possess interesting cytotoxic and amoebicide properties showed us that they cannot take the planar conformation proposed to explain the activity of this type of molecules on protein synthesis. Nevertheless, a common (non planar) conformation exists where the angles between the two plans containing the aromatic rings are nearly the same for the three compounds. This fact could confirm the hypothesis of a common receptor which would be slightly different in amoebae because of its higher sensitivity to usambarensine. [less ▲]

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See detailL'utilisation des forces tractrices en rivières naturelles
Petit, François ULg

in De Aardrijkskunde (1991), 15(2), 193-218

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See detailAllowed and Forbidden Transitions in Highly Ionized Neon-like Atoms (Ni XIX - ULXXXIII)
Quinet, Pascal ULg; Gorlia, T.; Biémont, Emile ULg

in Physica Scripta (1991), 44

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See detailA reduced-gravity model for the Catalan Sea
Garcia-Ladona, Emilio; Djenidi, Salim ULg

in Journal of Marine Systems (1991), 4

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See detailC.R. de J. CASTAÑO-RUIZ, El atuendo en la obra de Frederi Mistral
Henrard, Nadine ULg

in Revue Belge de Philologie et d'Histoire (1991), 69

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See detailCharacterization of a set of variable number of tandem repeat markers conserved in Bovidae
Georges, Michel ULg; Gunawardana, A.; Threadgill, D. et al

in Genomics (1991), 11(1), 24-32

Screening purpose-built libraries with minisatellite probes, we have isolated 36 bovine variable number of tandem repeat markers (VNTRs) characterized by a mean heterozygosity of 59.3 within the American ... [more ▼]

Screening purpose-built libraries with minisatellite probes, we have isolated 36 bovine variable number of tandem repeat markers (VNTRs) characterized by a mean heterozygosity of 59.3 within the American Holstein breed. Matching probabilities and exclusion powers were estimated by Monte-Carlo simulation, showing that the top 5 to 10 markers could be used as a very efficient DNA-based system for individual identification and paternity diagnosis. The isolated VNTR systems should contribute significantly to the establishment of a bovine primary DNA marker map. Linkage analysis, use of somatic cell hybrids, and in situ hybridization demonstrate that these bovine VNTRs are scattered throughout the bovine genome, without evidence for proterminal confinement as in the human, and that at least some of them are organized as clusters. Moreover, Southern blot analysis and in situ hybridization demonstrate conservation of sequence and map location of minisatellites within Bovidae [less ▲]

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See detailEradication de la leucose bovine enzootique en Belgique : estimation du temps nécessaire à l'assainissement des foyers découverts
Knapen, K.; Kerkhofs, P.; Palm, Rodolphe ULg et al

in Annales de Médecine Vétérinaire (1991), 135(4), 281-285

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See detailMonseigneur d'Argenteau, doyen du Chapitre cathédral de Liège de 1842 à 1879
George, Philippe ULg; Lhoist-Colman Berthe; Pirenne Françoise

in Feuillets de la Cathédrale de Liège (1991)

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See detailIncreased expression of the laminin receptor in human colon cancer.
Cioce, V.; Castronovo, Vincenzo ULg; Shmookler, B. M. et al

in Journal of the National Cancer Institute (1991), 83(1), 29-36

It has been proposed that among the various cell-surface proteins capable of interacting with laminin, the 67-kd high-affinity laminin receptor plays a crucial role during tumor invasion and metastasis ... [more ▼]

It has been proposed that among the various cell-surface proteins capable of interacting with laminin, the 67-kd high-affinity laminin receptor plays a crucial role during tumor invasion and metastasis. In this study, the expression of laminin-receptor-precursor messenger RNA (mRNA) and 67-kd protein was analyzed in human colon adenocarcinoma. In 22 of 23 patients with colon cancer, we found a 2- to 23-fold increase in levels of laminin-receptor-precursor mRNA in the cancer tissues compared with those in matched normal adjacent colonic mucosa. In 10 of 11 cases studied, the level of 67-kd laminin receptor, detected by affinity-purified anti-laminin-receptor synthetic peptide antibodies on immunoblots of matched tumor and normal tissue extracts, was higher in the colon carcinoma tissue. Immunodetection of laminin receptor in tissue sections using anti-laminin-receptor-peptide antibodies confirmed that the increased expression of laminin receptor was specifically associated with the cancer cells. In a series of 72 paraffin sections of colon lesions, we observed a correlation between the expression of the laminin receptor and the Dukes' classification. Our observations indicate that increased expression of laminin-receptor-precursor mRNA is associated with enhanced levels of the 67-kd laminin receptor as well as with the invasive phenotype of colon carcinoma. Detection of this metastasis-associated gene product may be a valuable adjunct in the evaluation of human colon cancer. [less ▲]

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See detailConformational analysis of beta and gamma lactam antibiotics
Lamotte, Josette ULg; Dive, Georges ULg; Ghuysen, Jean-Marie ULg

in European Journal of Medicinal Chemistry (1991), 26(1), 43-50

Geometry optimization, superimposition searches and conformational analysis carried on several lactam antibiotics show that reactivity with the active-site serine penicillin-binding proteins is related to ... [more ▼]

Geometry optimization, superimposition searches and conformational analysis carried on several lactam antibiotics show that reactivity with the active-site serine penicillin-binding proteins is related to a particular spatial disposition of 2 flanking functional groups - namely a C = O or C-OH on 1 side and a carboxylate on the other - with respect to the central scissile amide bond. Such a binding entity is found in one of the most stable conformers of the tripeptide diacetyl-L-Lys-D-Ala-D-Ala conferring substrate activity, and in benzylpenicillin, cephapyrin, thienamycin, gamma-lactam, the 6-spiro-epoxypenicillin S and in one epimer of lactivicin, conferring inactivating potency. This binding entity generates a particular electronic distribution and the fact that it is conserved in compounds belonging to very different chemical families strongly suggests that it is an important feature required for enzyme recognition. [less ▲]

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See detailIdentité sociale et fédéralisme
Jacquemain, Marc ULg; Doutrelepont, René; Vandekeere, Michel

in Fédéralisme - Régionalisme (1991), 2

Based on survey results, the paper shows that feelings of belonging go together witht different attitude toward federalism.

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See detailSurveillance des variations de la nappe d'eau superficielle en Fagnes de Duret et du Setay
Erpicum, Michel ULg; Streel, Maurice ULg; Groulard, J. M. et al

in Hautes Fagnes (1991), 203

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See detailA propos de 2 cas de lymphangiomyomatose traités par agoniste de la LH-RH
RADERMECKER, Marc ULg; Corhay, Jean-Louis ULg; Broux, R. et al

in Revue Médicale de Liège (1991), 46(5), 286-93

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See detailStructure du [4-phénylacétylimino-1-(1,2,4-triazolio)]acétate de sodium dihydrate
Dupont, L.; Englebert, S.; Dideberg, O. et al

in Acta Crystallographica (1991), C47

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See detailLa phytotechnie du triticale.
Bodson, Bernard ULg

in Bulletin des Recherches Agronomiques de Gembloux (1991), 26(4), 507-518

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See detailTarifs de cubage peuplement pour le douglas Pseudotsuga menziesii (Mirb.) Franco en moyenne et haute Belgique
Rondeux, Jacques ULg; Laurent, Christian; Lejeune, Philippe ULg

in Revue Forestière Française (1991), XLIII(6), 507-513

L'estimation rapide du volume des peuplements de nos principales essences forestières peut être réalisée au moyen de tarifs de cubage de peuplements. Nous avons mis à profit de grand nombre de données ... [more ▼]

L'estimation rapide du volume des peuplements de nos principales essences forestières peut être réalisée au moyen de tarifs de cubage de peuplements. Nous avons mis à profit de grand nombre de données dendrométrique récoltées dans le cadre d'une étude consacrée à la sylviculture et à la production du Douglas, pour établir des tarifs adaptés à la détermination du volume des peuplements de ce résineux en pleine expansion et qui couvre aujourd'hui près de 11 000 hectares en Moyenne et Haute Belgique. Nous présenterons d'abord les caractéristiques du matériel expérimental ainsi que la technique de construction des tarifs et nous fournirons les résultats obtenus pour le volume bois fort tige ainsi que ceux relatifs à différentes découpes, et, nous envisagerons enfin l'utilisation pratique de ces tarifs et rappellerons leur intérêt en matière de gestion forestière. [less ▲]

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See detailAugmentation of type IV collagenase, laminin receptor, and Ki67 proliferation antigen associated with human colon, gastric, and breast carcinoma progression.
D'Errico, A.; Garbisa, S.; Liotta, L. A. et al

in Modern Pathology : An Official Journal of the United States & Canadian Academy of Pathology, Inc (1991), 4(2), 239-46

The proportion of neoplastic cells immunocytochemically positive for type IV collagenase (IVase), laminin receptor (LR), and Ki67 proliferation-associated antigen increased during the progression of human ... [more ▼]

The proportion of neoplastic cells immunocytochemically positive for type IV collagenase (IVase), laminin receptor (LR), and Ki67 proliferation-associated antigen increased during the progression of human colon, gastric, and breast carcinomas. Thirty cases of colonic adenoma were compared with 30 cases of Dukes' A or B stage carcinoma and ten cases of Dukes' C stage carcinoma. The percentage of positive cells increased significantly (P less than 0.001) for all three antigens comparing carcinomas with adenomas and Dukes' C stage compared with Dukes' A/B stage. The same pattern of antigen correlation with progression was found with 40 human gastric carcinomas. Gastric carcinomas classified as well-differentiated advanced stage contained a significantly higher proportion of tumor cells positive for IVase (P less than 0.001), LR (P less than 0.001), and Ki67 (P less than 0.001) compared with well-differentiated superficial tumors. Gastric carcinomas classified as poorly differentiated superficial had a significantly higher proportion of cells positive for Ki67 (P less than 0.016), but not IVase (P less than 0.069) or LR (P less than 0.075), compared with poorly differentiated advanced tumors. Metastasis of colon and gastric carcinoma retained the immunostaining pattern of the primary tumors. Thirty cases of breast neoplasia were compared with 30 adjacent samples of normal duct epithelium. A positive correlation (P less than 0.001) was found for the immunoreactivity of all three antigens in the invasive carcinomas compared with the normal epithelium. Invasive ductal carcinoma and invasive lobular carcinoma had a significantly higher percentage of immunoreactivity for the three antigens compared with corresponding in situ lesions. [less ▲]

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See detailRecension bibliographique de "Keenleyside M.H.A. ed. : Cichlid fishes. Behaviour, ecology and evolution"
Poncin, Pascal ULg

in Cahiers d'Ethologie (1991), 11(4), 519-521

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See detailValidation of the Thermodilution Technique for the Estimation of the Cardiac Output in the Unsedated Calf
Amory, Hélène ULg; Linden, Annick ULg; Desmecht, Daniel ULg et al

in Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine (1991), 38(6), 409-417

The purpose of this study was to establish a standardized protocol in order to obtain accurate and reproducible cardiac output (CO) measurements by the thermodilution technique in the unsedated calf. In 5 ... [more ▼]

The purpose of this study was to establish a standardized protocol in order to obtain accurate and reproducible cardiac output (CO) measurements by the thermodilution technique in the unsedated calf. In 5 healthy calves, the effect of various temperatures, volumes, rates, means and sites of injection of the thermal indicator were tested for their effect on accuracy and reproducibility of CO measurement by the thermodilution technique, the Fick method being used as the standard technique. Five milliliters of an iced 5% dextrose solution per 100 kg body weight constituted the correct amount of thermal indicator. Manual injection of the indicator bolus and/or injection of this bolus through the proximal lumen of a thermodilution Swan-Ganz catheter gave poor results of CO measurements by the thermodilution technique. On the other hand, results of CO measurements were highly reliable when the bolus injection was performed by an ECG-synchronized injection pump and/or through a right atrial catheter with a larger diameter and a shorter length than the classical Swan-Ganz catheter. It was concluded that an iced 5% solution of dextrose (5 ml/100 kg body weight) injected through a right atrial catheter by an ECG-synchronized pump gives the most accurate and reproducible CO measurements by the thermodilution technique in unsedated calves. [less ▲]

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See detailLaminin receptor complementary DNA-deduced synthetic peptide inhibits cancer cell attachment to endothelium.
Castronovo, Vincenzo ULg; Taraboletti, G.; Sobel, M. E.

in Cancer Research (1991), 51(20), 5672-8

Stable attachment of cancer cells to the endothelium is a key step in the formation of metastasis. In this study, we have investigated the possibility that interaction between laminin and its Mr 67,000 ... [more ▼]

Stable attachment of cancer cells to the endothelium is a key step in the formation of metastasis. In this study, we have investigated the possibility that interaction between laminin and its Mr 67,000 high-affinity receptor (67 LR) could play a major role in this process. Scatchard analysis of laminin-binding studies showed that bovine aortic endothelial cells exhibit 46,000 high-affinity receptors that mediate, at least in part, the attachment of highly invasive melanoma cells. This endothelial cell-melanoma cell interaction was significantly inhibited by soluble laminin and by anti-laminin antibodies. Peptide G, an eicosapeptide derived from the complementary DNA sequence of the 67 LR precursor (IPCNNKGAHSVGLMWWMLAR) that specifically binds to laminin and presumably contains the active ligand-binding site of the receptor, specifically prevented attachment of the melanoma cells to both the bovine aortic endothelial cell monolayer and human umbilical vein endothelium. Thus, peptide G may selectively interfere with the metastatic cascade by inhibiting tumor cell attachment to endothelium via the laminin-67 LR pathway and is a potential new antimetastatic agent. [less ▲]

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See detailFonction pulmonaire de la chèvre : normes et spécificités
Bakima, M.; Arendt, J.; Lomba, F. et al

in Annales de Médecine Vétérinaire (1991), 135

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See detailQuelles alternatives aux oestrogènes pour la prévention de l'ostéoporose post-ménopausique ?
Reginster, Jean-Yves ULg

in Lettre du Rhumatologue (La) (1991), 170

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See detailcompte rendu de G. Ballaira, Prisciano e i suoi amici, Turin, 1989
Rochette, Bruno ULg

in Scriptorium. Bulletin codicologique (1991)

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See detailCompte-rendu de l'ouvrage de Christian du Tertre et Giancarlo Santilli: Automatisation et travail
Robert, Jocelyne ULg

in Revue de l'Institut de Sociologie (1991)

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See detailNew alkoxypyridine Sulfonamides: Synthesis, Biological Evaluation and Physicochemical Properties
Liégeois, Jean-François ULg; Dive, Georges ULg; Dupont, Léon et al

in Helvetica Chimica Acta (1991), 74(8), 1764-1772

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See detailUn exemple d'étude dendrochronologique: la charpente de la chapelle Saint_hubert à Weweler (Burg-Reuland)
Hoffsummer, Patrick ULg

in Bulletin de la Fondation Vanhove-Vonneche (1991), 3

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See detailCephalic and extracephalic pressure pain thresholds in chronic tension-type headache.
Schoenen, Jean ULg; Bottin, D.; Hardy, F. et al

in Pain (1991), 47(2), 145-9

Pressure pain thresholds were assessed with an algometer (Somedic Inc.), over the forehead, temple and suboccipital region as well as over the Achilles tendon. A group of 32 patients suffering from ... [more ▼]

Pressure pain thresholds were assessed with an algometer (Somedic Inc.), over the forehead, temple and suboccipital region as well as over the Achilles tendon. A group of 32 patients suffering from chronic tension-type headache was compared to 20 healthy controls and to 10 migraineurs without aura. Although individual values were widely scattered, pressure pain thresholds were on average significantly lower in chronic tension-type headache, not only at pericranial sites but also over the Achilles tendon. Only 50% of these patients had one or more pericranial thresholds 1.5 S.D. below the mean of controls. After muscular biofeedback therapy, all pain thresholds were on average increased. Along with results obtained previously, the present data support the hypothesis that diffuse disruption of central pain-modulating systems, possibly due to a modified limbic input to the brain-stem, is pivotal in the pathophysiology of chronic tension-type headache. [less ▲]

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See detailInterpleural, intercostal and thoracic epidural analgesia
Joris, Jean ULg

in Current Opinion in Anaesthesiology (1991), 4

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See detailAxillounifemoral and Axillobifemoral Bypasses. Retrospective Study of 85 Cases
DUJARDIN, P.; LAVIGNE, Jean-Paul ULg; Defraigne, Jean-Olivier ULg et al

in Acta Chirurgica Belgica (1991), 91(4), 155-60

From 1983 to 1990, 65 axillobifemoral and 20 axillofemoral bypasses have been performed in 85 patients (77 men and 8 women), with a mean age of 69 +/- 9 years. Indications for surgery were: severe ... [more ▼]

From 1983 to 1990, 65 axillobifemoral and 20 axillofemoral bypasses have been performed in 85 patients (77 men and 8 women), with a mean age of 69 +/- 9 years. Indications for surgery were: severe aortoiliac occlusive disease (87%), sepsis of previous aortoiliac prosthesis, abdominal aorta aneurysm. Anatomic bypass was precluded for general (81%) or local (19%) conditions. In the last group, 9 patients have had previous laparotomy. Four patients presented with aortoenteric fistulas. Eighteen patients were operated on in emergency. The operative mortality was 12%, with 50% cardiac related deaths. Early primary patency was 98%. Early secondary patency was 100%. The mean follow-up is 28 +/- 15 months. The 3 years survival is 77%. The cumulative patency rates at 1 and 3 years are 89% and 76% respectively. Although axillobifemoral bypasses achieve poor long-term results when compared with aortoiliac bypasses, they can be considered in high risk patients. In this group of patients, the cumulative patency rate and the survival curves tend to be parallel. [less ▲]

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See detailLes innovations dans l'intervention sociale et la justice des mineurs en Belgique
Born, Michel ULg

in Revue Internationale de Criminologie et de Police Technique (1991), 4

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See detailSéance anatomo-clinique: hémoptysies et insuffisance rénale aigue chez un patient de 60 ans
MENDES, P; PARTOUNE, B; DECHENNE, Charles ULg et al

in Acta Clinica Belgica (1991), 46(4), 237-242

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See detailHow to decrease pragmatic interferences : the impact of different techniques
Dardenne, Benoît ULg

in European Bulletin of Cognitive Psychology (1991), 11

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See detailInterprétation et rectification des jugements répressifs
Masset, Adrien ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (1991)

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See detailCritical closure in the canine pulmonary vasculature : effects of endotoxin insult
D'Orio, Vincenzo ULg; FATEMI, M; MENDES, P et al

in American Review of Respiratory Disease (1991), 143

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See detailLarge-scale eradication of rabies using recombinant vaccinia-rabies vaccine
Brochier, Bernard; Kieny, M. P.; Costy, F. et al

in Nature (1991), 354(19/26 December), 520-521

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See detailContribution a l'etude de l'influence de divers facteurs meteorologiques sur la production et la qualite des fibres chez le cotonnier Gossypium hirsutum L.
Mergeai, Guy ULg; Demol, J.

in Bulletin des Recherches Agronomiques de Gembloux (1991), 26(1),

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See detailTranscriptional induction of the human prolactin gene by cAMP requires two cis-acting elements and at least the pituitary-specific factor Pit-1
Peers, Bernard ULg; Monget, Philippe; Nalda, M. Asuncion et al

in Journal of Biological Chemistry (1991), 266(27), 18127-34

To identify the cis-acting elements responsible for cAMP stimulation of human prolactin (hPRL) promoter activity, pituitary GC cells were transfected with 5'-deleted hPRL promoters fused to the ... [more ▼]

To identify the cis-acting elements responsible for cAMP stimulation of human prolactin (hPRL) promoter activity, pituitary GC cells were transfected with 5'-deleted hPRL promoters fused to the chloramphenicol acetyltransferase reporter gene. The proximal regulatory region (coordinates -250 to -42) was sufficient to confer strong cAMP stimulation (+/- 25 fold). Further 5' and 3' deletions performed within this proximal region demonstrated that two types of cis-acting elements are involved in the cAMP regulation: (i) the binding sites of the pituitary-specific factor Pit-1, and (ii) the sequence between coordinates -115 and -85 (named fragment A), which contains a TGACG motif. We show by gel-shift and Southwestern experiments that fragment A binds Pit-1 monomer and also a ubiquitous factor that is neither cAMP-responsive element-binding protein nor activator protein-1. Strong cAMP induction was observed when fragment A was juxtaposed to a Pit-1 binding site. That Pit-1 plays an important role was supported further by the finding that the hPRL proximal region conferred cAMP regulation when linked to the herpes simplex virus thymidine kinase promoter only in pituitary GC cells and not in other heterologous cells, which do not express Pit-1. Furthermore, we observed that concatenated Pit-1 binding sites were able to confer cAMP responsiveness to the thymidine kinase promoter in GC cells. [less ▲]

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See detailPit-1 binding sequences permit calcium regulation of human prolactin gene expression
Hoggard, Nigel; Davis, Julian R E; Berwaer, Monique et al

in Molecular Endocrinology (1991), 5(11), 1748-54

This study examines the regulation of the human PRL (hPRL) gene promoter by intracellular calcium. Deletants of the 5'-flanking region of the hPRL gene and constructs consisting of the thymidine kinase ... [more ▼]

This study examines the regulation of the human PRL (hPRL) gene promoter by intracellular calcium. Deletants of the 5'-flanking region of the hPRL gene and constructs consisting of the thymidine kinase promoter linked to the first or second proximal Pit-1 binding site were fused to the bacterial chloramphenicol acetyl transferase (CAT) reporter gene. With the complete 5-kilobase pair (kbp) hPRL promoter sequence the calcium channel agonist Bay K8644 induced a significant 2-fold increase in CAT reporter gene expression and the antagonist verapamil a 4.5-fold reduction, using GH3 cells cultured in physiological levels of calcium. The transcriptional response to calcium influx was similar with a series of 5'-deleted hPRL-CAT constructs including those that comprised the proximal (up to 740 bp) or distal (-1300- to -1700-bp) sequences alone. When treating cells cultured in low calcium conditions the induction with the hPRL promoter increased to 5-fold on the addition of exogenous calcium and Bay K8644. The pituitary-specific expression of the hPRL gene is conferred by the interaction of the pituitary-specific factor Pit-1 with several binding sites located in the 5'-flanking DNA, of which three are located in the proximal region. This suggested that Pit-1 binding sites may be involved in the calcium response.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailCompte rendu de J. Jouanna, Hippocrate. Tome V, 1e partie. Des vents. De l'art, Paris, 1988
Marganne, Marie-Hélène ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (1991), 60

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See detailMalignant cell attachment to endothelium of ex vivo perfused human umbilical vein. Modulation by platelets, plasma and fibronectin.
Lewalle, J. M.; Castronovo, Vincenzo ULg; Goffinet, G. et al

in Thrombosis Research (1991), 62(4), 287-98

The success of blood-born metastatic spread depends upon a key event: the tumor cell arrest and attachment to the host organ vasculature. In the present study, we have investigated interactions between ... [more ▼]

The success of blood-born metastatic spread depends upon a key event: the tumor cell arrest and attachment to the host organ vasculature. In the present study, we have investigated interactions between several normal and cancer cell lines and vascular endothelium in a model of ex vivo perfusion of human umbilical vein. In this system, hydrodynamic parameters are monitored and endothelial cells are kept in their original environment known to modulate their phenotype. Metastatic tumor cell adhesion to the perfused endothelium was found to be significantly higher than that of normal cells tested. Platelets and soluble plasma factors including fibronectin promoted tumor cell arrest and adhesion to endothelium. Altogether our results indicate that the ex vivo perfusion of human umbilical vein allows the study of the interactions between malignant tumor cells, circulating plasma or blood cells and the endothelium during blood-born metastatic spread. [less ▲]

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See detailAutoimmune syndrome after neonatal induction of tolerance to alloantigens: analysis of the specificity and of the cellular and genetic origin of autoantibodies
Schurmans, Stéphane ULg; Merino, J.; Qin, H. et al

in Autoimmunity (1991), 9

BALB/c mice neonatally injected with 10(8) semiallogeneic (C57BL/6 x BALB/c)F1 spleen cells become tolerant to the H-2b alloantigens, but also develop a wide range of autoimmune manifestations ... [more ▼]

BALB/c mice neonatally injected with 10(8) semiallogeneic (C57BL/6 x BALB/c)F1 spleen cells become tolerant to the H-2b alloantigens, but also develop a wide range of autoimmune manifestations characteristic of systemic lupus erythematosus (SLE). Indeed, in these mice, the presence of a hypergammaglobulinaemia, autoantibodies--including anti-ssDNA, anti-platelet, thymocytotoxic and rheumatoid factor antibodies--circulating immune complexes, cryoglobulins as well as renal glomerular deposition of immunoglobulins have been observed. In this study, we have shown that the allogenic effect and B cell chimaerism which characterize these F1 cell-injected mice is associated with the expression of a large spectrum of autoantibodies, including anti-ssDNA and anti-cytoskeleton antibodies, and that these autoantibodies are not multispecific. We took advantage of the fact that, in this model, autoantibodies are exclusively produced by F1 donor B cells to inject newborn BALB/c mice with F1 Xid spleen cells lacking the CD5+ B cell subset. Injection of 2 x 10(8) F1 Xid spleen cells triggers the production of anti-ssDNA as well as anti-BrMRBC antibodies, and these mice developed tissue lesions. Finally, analysis of the VH gene family expressed by monoclonal autoantibodies derived from F1 cell-injected mice showed that they used the 2 largest families J558 and 7183. These results suggest that the allogenic effect and B cell chimerism which characterize the neonatal induction of tolerance to MHC alloantigens is associated with the selective triggering of autoreactive B cells producing monospecific IgG autoantibodies. They also imply that upon stimulation by persisting alloreactive CD4+ T cells, either CD5- B cells are able to produce autoantibodies or autoantibody-producing CD5+ B cells can differentiate from Xid spleen cells [less ▲]

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See detailLe test ELISA, une nouvelle voie rapide de determination de residus d'herbicides dans le sol. Application au cas de l'isoproturon.
Liegeois, E.; Dehon, Y.; Deleu, R. et al

in Mededelingen van de Faculteit Landbouwwetenschappen (Rijksuniversiteit te Gent) (1991), 56(3a),

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See detailHeliox-induced changes in the breathing mechanics of ponies during exercise.
Art, Tatiana ULg; Desmecht, Daniel ULg; Amory, Hélène ULg et al

in Equine Exercise Physiology (1991), 3

The changes occurring in breathing mechanics of exercising ponies when heliox is substituted for air are reported. Respiratory airflow, tidal volume (VT) and transpulmonary pressure (Ptp) were ... [more ▼]

The changes occurring in breathing mechanics of exercising ponies when heliox is substituted for air are reported. Respiratory airflow, tidal volume (VT) and transpulmonary pressure (Ptp) were simultaneously measured in 5 healthy ponies (255 ± 15 kg) at rest (breathing air) and while they exercised for 6 min on a treadmill. During exercise they first breathed air (2 min), than heliox (2 min) and then air again (2 min). Tidal volume (VT), respiratory rate (fR), minute volume (VE), maximum Ptp changes, total pulmonary resistance (RJ, mechanical work of Breathing per liter (Wrm l'), mechanical work per min (Wrm), dynamic compliance and pulmonary inertance were calculated. Heliox breathing significantly increased f,, and VE while VT remained unchanged. RL was reduced by 50% of lis "air value", Wrm I-' decreased, while Wrm remained unchanged. Pulmonary inertance dropped to 30% of its "air value". These observations suggest that in ponies, turbulent resistance and pulmonary inertance could be mainly responsible for the increases of RL and Wrm 1' during exercise [less ▲]

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See detailLe point sur l'evolution dans le domaine des formulations.
Schiffers, Bruno ULg; Galoux, M.

in Parasitica (1991), 47(2-3),

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See detailThymic cryptocrine signaling and the immune recognition of self neuroendocrine functions
Geenen, Vincent ULg; Martens, Henri ULg; Robert Françoise et al

in Progress in NeuroEndocrinImmunology (1991), 5

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See detailThe Photoionization of Ammonia revisited. The Vibrational Autoionization of NH3 and its three Isotopomers in the 10-12 eV photon energy range.
Locht, Robert ULg; Leyh, Bernard ULg; Denzer, W. et al

in Chemical Physics (1991), 155

The photoionzation efficiency curves of NH3 and its three isotopomers have been investigated in the photon energy range of the first ionized state. From the analysis of the corresponding vibrational ... [more ▼]

The photoionzation efficiency curves of NH3 and its three isotopomers have been investigated in the photon energy range of the first ionized state. From the analysis of the corresponding vibrational structure, wavenumbers and anharmonicity constants are deduced. The detailed investigation of the abundant autoionization structure tends to show the adiabatic ionization energy to be 10.072+/-0.010 eV for NH3, NH2D and NHD2 and 10.083+/-0.010 eV for ND3. All autoionization features were classified in vibrational progressions (nu2 bending mode) belonging to nasa1 (or nd) and npe (n=5, 6, 7) Rydberg series. Vibrational autoionization occurs through Delta v transitions up to -9. A qualitative analysis of the intensity distribution of these series strongly supports that transitions involving odd Delta v values are favoured. This observation can be understood by applying group theoretical considerations to the theory of vibrational autoionization. [less ▲]

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See detailUn témoignage antérieur à Celse sur l’opération du coloboma : P. bibl. univ. Giss. IV.44
Marganne, Marie-Hélène ULg

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1991), 66

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See detailThe Bovine Leukemia-Virus Tax Gene Contains An Enhancer Sequence
Willems, Luc ULg; Romond, Pc.; Ghysdael, J. et al

in Virology (1991), 182(1),

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See detailBiodegradation, drug release mechanism and physiological activity of a protein's sustained release system
Demoustier, M. M.; Beckers, Jean-François ULg; Legras, R. et al

in Proceedings International Symposium Control. Rel.Bioact. Mater. (1991)

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See detailExperimental study of the non-linear behaviour of beam-to-column composite joints
Altmann, R.; Maquoi, René ULg; Jaspart, Jean-Pierre ULg

in Journal of Constructional Steel Research (1991), 18

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See detailBijlokekaai: Ziekenzaal
Hoffsummer, Patrick ULg; Laleman, Marie-Christine; Raveschot, Patrick

in Stadsarcheologie (1991), 15(1), 56-57

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See detailPeut-on utiliser l'auto-estimation à l'école ? Qu'en aurait dit DESCARTES ?
Leclercq, Dieudonné ULg

in Enjeux : Revue de Formation Continuée et de Didactique du Français (1991), 22

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See detailCloning and nucleotide sequencing of the gene encoding the beta-lactamase from Citrobacter diversus
Perilli, Mariagrazia; Franceschini, Nicola; Segatore, Bernardetta et al

in FEMS Microbiology Letters (1991), 83

The gene coding for the class A beta-lactamase of Citrobacter diversus has been cloned and sequenced. It contains the information for a 294-amino-acid precursor protein, including a 27-residue N-terminal ... [more ▼]

The gene coding for the class A beta-lactamase of Citrobacter diversus has been cloned and sequenced. It contains the information for a 294-amino-acid precursor protein, including a 27-residue N-terminal signal peptide. The deduced sequence of the N-terminal portion of the mature protein is in excellent agreement with that determined by microsequencing of the protein and readily explains the pI differences observed between the naturally occurring forms I and II of the enzyme. The sequence of the mature protein exhibits a very high degree of similarity with that of the Klebsiella oxytoca class A beta-lactamase [less ▲]

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See detailA "zinc finger-like" domain in the 54KDA protein of several pestiviruses
De Moerlooze, L.; Renard, A.; Lecomte, C. et al

in Archives of Virology. Supplementum (1991), 3

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See detailStarters pour la charcuterie
Evrard, P.; Rikir, R.; Thonart, Philippe ULg

in Viande et Bien-être = Vlees en Welzijn (1991), (2), 3-7

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See detailE1 Transitions of Astrophysical Interest in Neutral Oxygen
Hibbert, A.; Biémont, Emile ULg; Godefroid, M. et al

in Journal of Physics : B Atomic Molecular & Optical Physics (1991), 24

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