Showing results 121 to 140 of 1902
  Convex Approximation Methods for Large Scale Structural ProblemsDuysinx, Pierre  in Proceedings of the 9th Nordic Seminar on Computational Mechanics (NSCM IX) (1996, October) Detailed reference viewed: 25 (0 ULg) Vimentin Expression in Cervical Carcinomas: Association with Invasive and Migratory PotentialGilles, Christine ; ; Piette, Jacques et alin Journal of Pathology (The) (1996), 180(2), 175-80 Vimentin is an intermediate filament protein normally expressed in mesenchymal cells, but evidence is accumulating in the literature which suggests that the aberrant expression of vimentin in epithelial ... [more ▼] Vimentin is an intermediate filament protein normally expressed in mesenchymal cells, but evidence is accumulating in the literature which suggests that the aberrant expression of vimentin in epithelial cancer cells might be related to local invasiveness and metastatic potential. Vimentin expression has previously been associated with invasive properties in an in vitro model consisting of a set of HPV-33-transformed cervical keratinocyte cell lines. In the present study, in order to emphasize those in vitro findings, the expression of vimentin has been investigated in cervical neoplasms of different grades, using immunohistochemistry. A clear association is reported between vimentin expression and metastatic progression, since vimentin was detected in all invasive carcinomas and lymph node metastases, but not in CIN III lesions. These in vivo results are compared with present and previous data obtained in vitro on cervical keratinocyte cell lines, where vimentin expression also correlated with in vitro invasiveness. [less ▲] Detailed reference viewed: 17 (2 ULg)Un état de l'offre bancaire de crédits aux Petites et Moyennes Entreprises en 1996Van Caillie, Didier ; Report (1996) This report presents, discusses and higllights the main types of bank credit available for SMEs in Belgium in the mid-90's Detailed reference viewed: 18 (6 ULg)The numerical simulation and physical model test of pipeline under water actionMarchal, Jean ; ; et alin Proceedings of the Fourth Pacific/Asia Offshore Mechanics Symposium, Pusan, Korea (1996) Detailed reference viewed: 25 (0 ULg)Observations sur l'efficacité de la nouvelle passe à poissons sur l'Aisne à BomalPhilippart, Jean-Claude ; ; et alArticle for general public (1996) Detailed reference viewed: 7 (0 ULg)L'accompagnement d'équipes éducatives dans la mise en place de la réforme du premier degré: parcours scolaires et pratiques de différenciation; Hindryckx, Marie-Noëlle in Informations pédagogiques (1996), 29 Synthèse d'une année de recherche-action basée sur l'accompagnement d'équipes éducatives dans la mise en place de la réforme du premier degré du secondaire : chronique d'une collaboration. Le travail ... [more ▼] Synthèse d'une année de recherche-action basée sur l'accompagnement d'équipes éducatives dans la mise en place de la réforme du premier degré du secondaire : chronique d'une collaboration. Le travail collaboratif s'est effectué avec des équipes de professeurs de français de l'Athénée de Visé. Les axes de travail choisis furent les suivants :définir les compétences minimales qui devront être maîtrisées par les élèves au terme du premier degré de l'enseignement secondaire - concevoir et mettre au point de nouvelles pratiques pédagogiques et de nouveaux outils visant la construction des compétences choisies pour la première année du cycle - Intégrer des démarches d'évaluation diagnostique (quels savoirs, quelles compétences sont acquises), d'évaluation formative (repérage et analyse des difficultés d'apprentissage rencontrées par les élèves) et de pratiques de différenciation - Expérimenter les actions éducatives conçues - Evaluer celles-ci, analyser les paramètres qui ont présider à leur élaboration. [less ▲] Detailed reference viewed: 34 (1 ULg)Regional brain activity during working memory tasksSalmon, Eric ; Van der Linden, Martial ; Collette, Fabienne et alin Brain (1996), 119(Pt 5), 1617-1625 The first aim of our PET study was to replicate previous findings concerning the brain areas activated by a verbal working memory task. The second aim was to specify the neural basis of the central ... [more ▼] The first aim of our PET study was to replicate previous findings concerning the brain areas activated by a verbal working memory task. The second aim was to specify the neural basis of the central executive, using a task of working memory updating. Our data confirm that the lower left supramarginal gyms and premotor area are the key regions subserving short-term verbal memory processes. They also suggest that the updating memory task is related to mid-dorsolateral prefrontal activation most probably responsible for the updating function of the central executive. An unexpected, predominantly right activation occurred in the inferior parietal region during the verbal memory updating task, which we related to a visuospatial strategy used to maintain the information in short-term memory. A third purpose was to explore the brain regions activated by a nonverbal, visual memory task, and our results confirm the importance of the superior occipital gyrus in the visual short-term memory. [less ▲] Detailed reference viewed: 6 (0 ULg)Prévention de l'ostéoporose postménopausique: œstrogènes et thérapeutiques non hormonalesReginster, Jean-Yves in Revue Médicale de Liège (1996), 51(10), 649-53 Detailed reference viewed: 4 (2 ULg) Elaboration d'un plan de formationThirion, Paul Conference (1996, October) Detailed reference viewed: 12 (1 ULg)Elements de nosographie ORL et signal vocalFINCK, Camille Scientific conference (1996, October) Detailed reference viewed: 2 (2 ULg)Copropriété des immeubles et groupes d'immeubles bâtis; ; et al in Chroniques de droit à l'usage du notariat (1996, October) Compétences sociales dans l'Enseignement Secondaire Spécial de Forme 3Duchâteau, Dominique ; ; Peeters, Robert Report (1996) Detailed reference viewed: 18 (3 ULg)SAXS analysis of the morphology of biocompatible and biodegradable poly(ε-caprolactone-b-glycolide) copolymers1; Van den Bossche, Guy ; et alin Journal of Molecular Structure (1996), 383(1-3), 63-68 Poly(epsilon-caprolacrone-b-glycolide) diblock copolyesters have been synthesized by the sequential polymerization of epsilon-caprolactone and glycolide as initiated by aluminium alkoxides ... [more ▼] Poly(epsilon-caprolacrone-b-glycolide) diblock copolyesters have been synthesized by the sequential polymerization of epsilon-caprolactone and glycolide as initiated by aluminium alkoxides. Copolymerization is typically ''living'' and yields copolyesters of perfectly controlled molecular weight and composition. Diblock molecular weight (Mn-PGA+Mn-PCL) ranges from 5700 to 42000 and the rho = Mn-PCL/Mn-PGA ratio varies from 1.5 to 13.1. Due to the inherent insolubility of the polyglycolide (PGA) segment in common organic solvent, the diblock copolyesters form stable non-aqueous colloidal dispersions e.g. in toluene, the stability of which results from the soluble poly(epsilon-caprolactone) (PCL) block. Combining all the experimental observations (PCS, TEM, WAXS, SAXS, AFM), a micelle model has been proposed which consists of a polyglycolide core surrounded with a corona of polycaprolactone (PCL). Both constituents are semi crystalline. From SAXS observations, the PGA core is better described by two concentric spheres. The internal sphere of a 5-6.7 nn diameter would essentially contain crystalline PGA. The diameter of the external sphere, D-PGA, is in the range from 6.2 to 9.6 nm, at least for the investigated diblock copolymers. As a rule, this diameter increases as rho decreases at constant molecular weight and as the diblock molecular weight increases at constant rho. A scattering peak (weak) is observed in the range from 10.8 to 15.5 nm and the Bragg distance is close mu D-PGA, where mu is equal to (1+3 rho/2)(1/3). From steric considerations, mu is the ratio between the diameter of the micelle and the diameter of the PGA core, so that this peak has been assigned to the characteristic intermicellar distance. At very small angles, several additional peaks are the signature of a hyperstructure which is possibly lamellar. [less ▲] Detailed reference viewed: 25 (2 ULg)Structural and Functional Aspects of Chloride Binding to Alteromonas Haloplanctis Alpha-AmylaseFeller, Georges ; ; et alin Journal of Biological Chemistry (1996), 271(39), 23836-41 Chloride is the allosteric effector of vertebrate pancreatic and salivary alpha-amylases and of the bacterial alpha-amylase from Alteromonas haloplanctis. Activation experiments of A. haloplanctis alpha ... [more ▼] Chloride is the allosteric effector of vertebrate pancreatic and salivary alpha-amylases and of the bacterial alpha-amylase from Alteromonas haloplanctis. Activation experiments of A. haloplanctis alpha-amylase by several monovalent anions show that a negative charge, not restricted to that of Cl-, is essential for the amylolytic reaction. Engineering of the chloride binding site reveals that a basic residue is an essential component of the site. The mutation K337R alters the Cl--binding properties, whereas the mutation K337Q produces an active, chloride-independent enzyme. Comparison of the Kd values for Cl- in three homologous alpha-amylases also indicates that the binding affinity is dependent on the chloride coordination mode by this basic residue. Analysis of substrate and chloride binding according to the allosteric kinetic model shows that the chloride effector is not involved in substrate binding. By contrast, the pH dependence of activity and experiments of chemical modifications and Ca2+ inhibition show that the chloride ion is responsible for the pKa shift of catalytic groups and interacts with active site carboxyl groups. [less ▲] Detailed reference viewed: 5 (1 ULg)Optimalization of green note aldehydes production by a hydroperoxide lyaseFauconnier, Marie-Laure ; ; Poster (1996, September 26) Detailed reference viewed: 6 (0 ULg)Large scale production of 13-hydroperoxilinolenic acid using soybean lipoxygenaseFauconnier, Marie-Laure ; ; Conference (1996, September 26) Detailed reference viewed: 9 (0 ULg)Les Trésors de la postérité ou les fastes des proches parents du Prophète (Kitāb Ḏaḫāʾir al-ʿuḳbā fī manāqib ḏawī al-ḳurbā) de Muḥibb al-dīn Aḥmad ibn ʿAbdallāh ibn Muḥammad al-Ṭabarī al-Makkī (ob. 694/1295). Édition critique accompagnie d'une traduction annotée et d'une étude sur la vie et l'œuvre de l'auteurBauden, Frédéric Doctoral thesis (1996) Detailed reference viewed: 26 (1 ULg)Le handicap qui fait chavirer la tête et celui qui fait chavirer le souffle d'une familleBattisti, Oreste Conference (1996, September 24) Detailed reference viewed: 21 (2 ULg)Intraarterial spiral CT angiography combined with DSA in pretherapeutic assessment of cerebral aneurysms.; ; Dondelinger, Robert et alConference (1996, September 21) Detailed reference viewed: 9 (0 ULg)Modèle Hydrologique Basé sur la Physique du Ruissellement Applicable à des Terrains Naturels DigitalisésPirotton, Michel in 24èmes journées de l'Hydraulique (1996, September 18) Detailed reference viewed: 8 (3 ULg) |
||
