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See detailEtude archéologique et historique du château de Franchimont à Theux
Hoffsummer, Patrick ULg

Book published by Université de Liège (1982)

Detailed reference viewed: 37 (6 ULg)
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See detailEtude astérosismologique du système KPD 1930+2752
Van Grootel, Valérie ULg

Master of advanced studies dissertation (2005)

Detailed reference viewed: 12 (0 ULg)
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See detailEtude au microscope électronique à balayage de cellules normales ou cancéreuses fixées et déshydratées par différentes méthodes
Heinen, Ernst ULg; Pierard, Gérald ULg

in Bulletin de l'Académie Royale de Médecine de Belgique (1974), 161

Detailed reference viewed: 20 (2 ULg)
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See detailEtude au microscope electronique a balayage du palais secondaire en formation chez le rat.
Baeckeland, E.; Heinen, Ernst ULg

in Bulletin de l'Association des Anatomistes (1977), 61(172), 61-70

Normal fetuses 14 to 17 days old were obtained from female Wistar rats. The palates have been studied, after dissection, by scanning electron microscopy. Palatal closure is achieved, in the median and ... [more ▼]

Normal fetuses 14 to 17 days old were obtained from female Wistar rats. The palates have been studied, after dissection, by scanning electron microscopy. Palatal closure is achieved, in the median and posterior region, by the elevation of the lateral palatine processus from a ventro-medial to a horizontal position; immediately after the horizontalization, they adhere to each other. Rostrally naso-palatine canal closure takes place later; it results from an epithelial and mesenchymal outgrowth under the nasal septum. The mutual adhesivity of the free edges of the lateral processes is noticeable. The pattern of the fusion surface has been considered, elements such as exfoliated cells, filopodes and microvilli are present. Their contribution to the adherence phenomenon is discussed. [less ▲]

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See detailEtude au microscope electronique a balayage et a transmission de l'epithelium amniotique chez la ratte en fin de gestation.
Baeckeland, E.; Heinen, Ernst ULg; Papart, Luc ULg

in Bulletin de l'Association des Anatomistes (1977), 61(172), 81-91

The pattern of the amniotic epithelium during the eight last days of pregnancy is described with the aid of scanning and transmission microscopy. A flattening of the cells appears near the term. Their ... [more ▼]

The pattern of the amniotic epithelium during the eight last days of pregnancy is described with the aid of scanning and transmission microscopy. A flattening of the cells appears near the term. Their area becomes progressively greater increasing their contact surface with the amniotic fluid. Simultaneaously, their microvilli become more numerous. During the 20th, the 21st and the 22nd days of pregnancy, we observed cytoplasmic processes emanating from the base of the cell interrupting the basal membrane and entering the underlying connective substance. No evidence of cell degeneration was seen. [less ▲]

Detailed reference viewed: 48 (5 ULg)
See detailEtude au microscope électronique des résidus de craquage catalytique
Bastin, David ULg; Lewis, Grégory

Report (2009)

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See detailEtude Belge HelpED :Effet de la revalidation érectile par iPDE 5 sur l’évolution psychosociale de l’homme pour dysfonction érectile
Andrianne, Robert ULg; Claes, Hubert; Opsomer, Reinier et al

in Belgian Journal of sexual health (2011)

Detailed reference viewed: 35 (6 ULg)
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See detailL'étude biologique du travail
Duesberg, Jules ULg

Speech (1938)

Detailed reference viewed: 5 (4 ULg)
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See detailEtude biomecanique articulaire chez le cheval par tribometrie et analyse dynamique inverse
Noble, Prisca ULg

Doctoral thesis (2010)

In locomotor biomechanics, three groups of constraints are usually encountered : pressure, traction and torsion (Kamina, 2005). In supra-maximal conditions, all of these contraints would be responsible ... [more ▼]

In locomotor biomechanics, three groups of constraints are usually encountered : pressure, traction and torsion (Kamina, 2005). In supra-maximal conditions, all of these contraints would be responsible for some disease of equine locomotor systems (Radin et al., 1972 ; Radin, 1983 ; Smith et al., 2002). In order to understand better the constraints in the equine locomotor dynamics, some investigations have been carried out. Moreover, some measurement methods, based on the mechanics of Newton, have been performed. This work consists of three different experimental approaches: The first approach was an ex vivo micro-systemic model of the diarthrodial cartilage-cartilage contact : from osteochondral specimens in contact, dynamic frictional constraints were measured by tribometry using a pin-on-disc tribometer in Coulomb’s regime. The effects of age and load on the frictional response were studied. The second approach was an ex vivo macro-systemic model of the diarthrodial cartilage-cartilage contact : from whole fetlock joints fixed into an original pendulum tribometer and mobilized, dynamic visco-frictional constraints have been followed in viscous regime. The effect of a lipid solvent on the synovial fluid was studied. The third approach was an in vivo macro-systemic model of the diarthrodial cartilage-cartilage contact : from distal forelimbs, cinematic, cinetic and radiographic data have been collected, then tendon tensions and joint contact forces components were calculated using an inverse dynamic analysis. From a sensitivity analysis, the effect of raised hell (0°, 6°, 12°) were elucidated. In the first approach : (i) an original equine joint friction test model using a cartilage-on-cartilage arrangement (pin-on-disc) has been performed, (ii) cartilage ageing was found, under experimental operating conditions, to be responsible for an increase in friction coefficient, (iii) lubrication remained stable when young cartilage was loaded whereas lubrication of older cartilage was affected by increased load. In the second approach : (i) an original equine joint pendulum tribometer has been designed, (ii) visco-frictionnal data have confirmed the joint pendulum damping can be modelled like a harmonic oscillator fluid damping, (iii) the lipid solvent injection into the fetlock joint increased the visco-frictional parameters of the joint and the damping time decreased, suggesting that the lubrication capacity was compromised. In the third approach : (i) an original equine distal limb model with tendinous variable pulleys was described, (ii) polynomial relationships of second order between the variation of the dorsal angle of the fetlock joint and the moment arm variation of the deep digital and superficial digital flexors tendons have been established, (iii) the joint contact force components of the coffin joint and of the fetlock joint have been calculated during the phase of the trot, (iv) the effect of raised heel on the tendinous tensions and on the joint contact force components was established, suggesting that the use of heel wedges to reduce the loading of the coffin joint may in fact increase the loading of the fetlock joint. The two ex vivo equine articular models (tribometry) are some original and complementary mechanical analysis tools: the pin-on-disc tribometer may highlight the mechanical properties of the triplex cartilage-synovial fluid-cartilage that are related with the structural properties (contact surface), and the pendulum tribometer may clarify the mechanical properties of the articular lubricant in a very realistic intra-articular environment (quasi anaerobic). These two tools could be used to characterize the mechanical properties of some new articular prosthesis and lubricants in the future. Finally, the numerical in vivo model (dynamic inverse analysis), calculating dynamic tendinous tensions and dynamic joint contact force components in the equine distal forelimb, is equally a very interressing and original tool. Indeed, it measures some articular intrinsic informations, in non-invasive manner (no using of intra-articular and intra-tendinous constraint gaugues) and can be perfectly integrated in a classical equine locomotor analysis. [less ▲]

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See detailÉtude cartographique et projet de restauration sur une rivière rectifiée, l’Eau Blanche
Peeters, Alexandre ULg; Verniers, Gisèle; Hallot, Eric ULg et al

Conference (2010, October 04)

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See detailEtude chémo-écologique et comportementale du parasitoïde, Nasonia vitripennis Walker (Hym., Pteromalidae), en vue de son utilisation comme biodétecteur en entomologie forensique
Frederickx, Christine ULg

Doctoral thesis (2012)

Most reports published in the field of forensic entomology are focused on Diptera, mostly on Calliphoridae. However, Hymenoptera are part of the entomofaunal colonisation of a dead body. Despite their ... [more ▼]

Most reports published in the field of forensic entomology are focused on Diptera, mostly on Calliphoridae. However, Hymenoptera are part of the entomofaunal colonisation of a dead body. Despite their significant presence in crime scenes, parasitoids are largely ignored due to their small size and the paucity of biological and behavioral information available in the ecosystem of corpse. The use of Hymenoptera parasitoids in forensic entomology can be relevant to many applications such as development of a biodectector. The objectives of this thesis were (1) to identify the Hymenoptera community parasitizing necrophagous Diptera, (2) to identify volatile organic compounds emitted by decaying process and by hosts which facilitate host-habitat and host location by female Nasonia vitripennis Walker (3) to evaluate the species N. vitripennis as biodectector of corpses. The faunistic study has identified five species of Hymenoptera in cadaver ecosystem. Alysia manducator was the most abundant Braconidae species. However, N. vitripennis was chosen as insect model; because over the last 50 years, this wasp has been intensely investigated in the subject of genetic, ecological and evolutionary research. A chemo-ecological approach, combining EAG and behavioral studies, was used on N. vitripennis with selected compounds from the decay process and their hosts. Firstly, we have demonstrated that host- habitat location and host location were dependent on the concentration of volatile organic compounds tested. In addition, dimethyldisulfide, a key component of decomposition and also released by Calliphora vicina Robineau-Desvoidy (Diptera, Calliphoridae) pupae, has a biological activity. Secondly, we have showed that rate of parasitism was based on the age of pupa, depth and substrate in which larvae burrow. This rate is the most important when pupae were six day-old, on the surface of soil and in a soil with a granulometry greater than 1mm. Moreover, N. vitripennis expanded our potential resource in biosensor used in forensic science. Females demonstrated a capacity for learning and memory. [less ▲]

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See detailEtude chimiotaxonomique dans les genres Macrotyloma, Dolichos et Pseudovigna
Dardenne, G. A.; Thonart, Philippe ULg; Otoul, E. et al

in Phytochemistry (1972), 12

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See detailEtude chimique de la graine de Simarouba glauca D.C. Détermination de la structure des triglycérides
Lognay, Georges ULg; Ergo, A.; Wathelet, Jean-Paul ULg et al

in Revue Française des Corps Gras (1981), 3

Une étude détatllée sur I'amande de la graine de Simarouba glauca D.C. est présentée. Cet arbuste tropical originarre d'Amérique Centrale est implanté depuis quelques années au Burundi. La graine est ... [more ▼]

Une étude détatllée sur I'amande de la graine de Simarouba glauca D.C. est présentée. Cet arbuste tropical originarre d'Amérique Centrale est implanté depuis quelques années au Burundi. La graine est analysée et deux modes d'extraction des lipides totaux sont testés. Les paramètres caractérisant la matière grasse sont déterminés, L'analyse des triglycérides et la détermination de leur structure sont entrcprises suivant les méthodes de calcul proposées par Van Der Wal et par Wathelet. Des pourcentages élevés en 00St - 000 - StOSt - POSt - OOP sont rencontrés et les principaux triglycérides sont du type mono-insaturé symétrique (SlS), di-insaturé asymetrique (SII) et tri-insaturé (III). [less ▲]

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See detailEtude chromatographique de substances volatiles : cas des sémiochimiques
Heuskin, Stéphanie ULg

Scientific conference (2007, October)

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See detailEtude chromatographique de substances volatiles : cas des sémiochimiques
Heuskin, Stéphanie ULg

Scientific conference (2008, December)

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See detailEtude chromatographique de substances volatiles : cas des sémiochimiques
Heuskin, Stéphanie ULg

Scientific conference (2009, November)

Detailed reference viewed: 6 (0 ULg)