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Peer Reviewed
See detailInteractions entre le vecteur et le trypanosome dans la détermination de la compétence vectorielle des glossines
Kazadi, J. M.; Geerts, S.; Kagéruka, P. et al

in Revue d'Elévage et de Médecine Vétérinaire des Pays Tropicaux (1998), 51

Detailed reference viewed: 11 (0 ULg)
See detailInteractions entre les gorilles des plaines de l'Ouest et l'exploitation forestière : Implications sylvicoles pour une forêt du Centre du Gabon
Haurez, Barbara ULg

Master's dissertation (2011)

The aim of this master thesis is to study the interactions between western lowland gorillas (Gorilla gorilla gorilla Savage & Wyman) and timber exploitation in a forest of Central Gabon. The research work ... [more ▼]

The aim of this master thesis is to study the interactions between western lowland gorillas (Gorilla gorilla gorilla Savage & Wyman) and timber exploitation in a forest of Central Gabon. The research work has been organized around tree main axis: (i) The determination of the impact of timber exploitation on gorilla density. Gorillas’ densities have been estimated in unlogged forest and in logged forest by pedestrian inventories of nesting sites. They are respectively equal to 3.7 and 1.7 weaned gorillas per km². Nevertheless these values are based upon small size samplings and it is not possible to assess if the difference between them is significant. (ii) The characterization of nesting habitat. We brought to light gorillas’ preference for relatively open sites for nesting. Particularly swamps and open terra firme forest are appreciated by gorillas for the construction of the nests. The vegetation type in which the nesting site is located has an influence on the structure and the composition of the nest. Plants of the Marantaceae and Zingiberaceae families are the most frequently used for nest construction. Moreover, we noticed the use of the old road logging network for nesting and feeding. (iii)The determination of the effect of endozoochory on seeds germination. The effect of endozoochory depends upon the botanical species of the seed. Too few results have been obtained in order to allow a reliable comparison of germination rates between ingested seeds and seeds extracted from fruits. However, the germination rate of the species Santiria trimera (Oliv.) Aubrév. (Burseraceae) seems to be enhanced by endozoochory, in particular by the removal of the pulp surrounding the seeds. This study demonstrates that western lowland gorilla is a species that adapts relatively well to timber exploitation. Besides thanks to its highly frugivorous diet and its nesting behavior, the gorilla is an effective seeds disperser. The role of the gorilla in forest regeneration seems to be inconsiderable. Complementary studies, particularly a long term study, would be necessary in order to examine thoroughly into the conclusions brought by this work. [less ▲]

Detailed reference viewed: 98 (19 ULg)
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See detailInteractions entre Prostephanus truncatus (Horn. ( col, Bostrichidae) et quatre espèces de Coleoptéres des denrées du maïs
Haubruge, Eric ULg; Verstaeten, Charles

in Mededelingen van de Faculteit Landbouwwetenschappen (Rijksuniversiteit te Gent) (1987), 52(2), 235-239

Detailed reference viewed: 17 (4 ULg)
See detailInteractions entre Prostephanus truncatus (Horn.) (Coleoptera Bostrychidae) et quatre especes de coleopteres des denrees, ravageuses du mais.
Haubruge, Eric ULg; Verstraeten, C.

in Internationaal Symposium over Fytofarmacie en Fytiatrie (1987), 39

Detailed reference viewed: 20 (1 ULg)
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See detailInteractions Homme-Insectes : aperçu de 10 ans d'échantillonnage passif au Musée de Zoologie de Liège
Loneux, Michèle ULg

in Notes Fauniques de Gembloux (2005), 56

Le Musée et l'Institut de Zoologie de l'Université de Liège drainent des demandes en tout genre concernant les interactions et la cohabitation entre homme et animaux. Environ trois quarts des demandes ... [more ▼]

Le Musée et l'Institut de Zoologie de l'Université de Liège drainent des demandes en tout genre concernant les interactions et la cohabitation entre homme et animaux. Environ trois quarts des demandes annuelles aboutissant au Musée ont trait aux insectes. Elles émanent en majorité de particuliers, mais de plus en plus également de sociétés ou d'administrations. Notre formation de biologiste naturaliste, ayant bénéficié de l'orientation entomologique des enseignements de Ch. Jeuniaux, nous permet de rencontrer les besoins de la région et d'assurer un service d'identification et de renseignements entomologiques, en plus de la gestion des collections scientifiques du Musée de Zoologie. Du point de vue scientifique, cette forme d'échantillonnage nous a mis en présence, ces dernières années, de quelques cas intéressants. Du point de vue humain, l'impact de notre réponse est décisif sur l'attitude des gens face à l'animal rencontré, montrant par là le peu de culture entomologique du grand public et le rôle éducatif et apaisant de l'entomologiste. Du point de vue société, notre présence dans cette institution publique permet d'assumer un rôle d'expert et un rôle pédagogique, illustrés par quelques cas précis. En perspectives, cette belle aventure sera terminée en octobre 2003, l'Université ayant choisi de faire rentrer le patrimoine des collections scientifiques du Musée de zoologie dans l'Aquarium public, et de confier leur conservation au seul gestionnaire de l'Aquarium. L'avenir des collections dépend de l'intérêt que les scientifiques leur porte? [less ▲]

Detailed reference viewed: 101 (28 ULg)
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See detailInteractions in massive binaries: spectral modelling – CoMBiSpeC – and observational analyses
Palate, Matthieu ULg

Doctoral thesis (2014)

Massive stars are very important to the life of the galaxiesbut they are rare and many open questions on their formation, evolution and characteristics remain. One of the best ways to improve our ... [more ▼]

Massive stars are very important to the life of the galaxiesbut they are rare and many open questions on their formation, evolution and characteristics remain. One of the best ways to improve our knowledge on massive stars is to study massive binaries (that represent at least 50% of massive stars see Mahy et al. 2009, and Sana & Evans 2011) and their spectra. Spectral and atmosphere modelling of stars are very interesting tools that are now often used in spectral analyses. However, these models are designed for single spherical stars. In this context, we have developed a numerical code of spectral modelling of massive binary systems: CoMBiSpeC (code of massive binary spectral computation) that computes the spectra of massive binary systems and accounts for various effects that affect these systems. Our models, and the observational analyses of the four binary systems presented in the second part of this work, have allowed to explain several effects linked to binarity: luminosity class discrepancy, temperature distribution, Struve-Sahade effect, and some kind of line profile variations. In summary, CoMBiSpeC is a first step in the spectral modelling of massive binary systems and several improvements are still needed to be able to study all massive binaries. Nevertheless, this model can explain and reproduce various observed phenomena which was the main goal of this thesis. [less ▲]

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See detailInteractions in Massive Binary Systems
Rauw, Grégor ULg

in Prša, Andrej; Zejda, Miloslav (Eds.) Binaries - Key to Comprehension of the Universe (2010, December 01)

In binary systems consisting of two massive stars, the interaction of the powerful stellar winds of the two components produces signatures over a broad range of wavelengths. Many observational and ... [more ▼]

In binary systems consisting of two massive stars, the interaction of the powerful stellar winds of the two components produces signatures over a broad range of wavelengths. Many observational and theoretical studies of this phenomenon have been performed over the last two decades. In very close massive binary systems, mass exchange due to Roche lobe overflow can also occur and the signatures of the two phenomena are sometimes hard to distinguish. In this review, I discuss some recent developments in the study of both phenomena. [less ▲]

Detailed reference viewed: 8 (0 ULg)
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Peer Reviewed
See detailInteractions in YBa2Cu3O7-x aqueous suspensions
Dusoulier, Laurent; Cloots, Rudi ULg; Vertruyen, Bénédicte ULg et al

in Materials Chemistry & Physics (2009), 116(2-3), 368-375

Surface charging mechanism of YBa2Cu3O7-x (YBCO) particles in water has been investigated in order to understand their colloidal behaviour and stabilise concentrated suspensions. A broad study relating ... [more ▼]

Surface charging mechanism of YBa2Cu3O7-x (YBCO) particles in water has been investigated in order to understand their colloidal behaviour and stabilise concentrated suspensions. A broad study relating the suspension parameters (pH and zeta potential) vs. the conditions of the suspension performance (atmosphere and time) has been shown and discussed. The zeta potential values remain positive in all the pH range for the highest powder concentration studied (10 g l(-1)), evidencing a large influence of the solid content in the particle charge. The chemistry of YBa2Cu3O7-x in water has been studied through the chemical analysis of the supernatant by inductively coupled plasma (ICP), and the surface analysis of the particles by X-ray diffraction analysis (XRD) and X-ray photoelectron spectroscopy (XPS). The presence of BaCO3, CuO, and the hydrolysed Ba species, such as Ba(OH)(2) and Ba(OH)(+), at the particles surface has been evaluated as a function of the powder concentration. Based on these analyses, the dependence of the colloidal behaviour of YBCO on the presence of Ba soluble species has been determined. A stabilisation mechanism for YBCO particles in aqueous suspension focus on the powders deleterious minimization was proposed. (C) 2009 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 53 (7 ULg)
See detailLes interactions médicamenteuses
Charlier, Corinne ULg

Conference (2003)

Detailed reference viewed: 8 (0 ULg)
See detailLes interactions médicamenteuses
Charlier, Corinne ULg

Conference (2002)

Detailed reference viewed: 6 (1 ULg)
See detailLes interactions médicamenteuses
Charlier, Corinne ULg

Conference (2002)

Detailed reference viewed: 8 (2 ULg)
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Peer Reviewed
See detailInteractions medicamenteuses: de la theorie a la pratique.
Scheen, André ULg

in Revue Médicale de Liège (2006), 61(5-6), 471-82

Pharmacotherapy becomes increasingly complex and therapeutic targets are more and more ambitious for both care and prevention. Therefore, polypharmacy is frequent, which exposes the patient to a high risk ... [more ▼]

Pharmacotherapy becomes increasingly complex and therapeutic targets are more and more ambitious for both care and prevention. Therefore, polypharmacy is frequent, which exposes the patient to a high risk of drug-drug interactions. These are often underestimated although they are responsible for many adverse events that may be serious and even fatal. In the present paper, we will first briefly recall the main cautions in the use of medications as well as the most common conditions favouring the occurrence of harmful drug interactions. Then, we will analyze the various mechanisms leading to drug interactions, emphasizing especially those involving cytochrome P450 enzymatic system and P-glycoprotein. Finally, we will illustrate these theoretical considerations with some examples of drug interactions, among the most dangerous and the most frequent in clinical practice. [less ▲]

Detailed reference viewed: 599 (2 ULg)
See detailInteractions Neuro-Immuno-Endocriniennes : Aspects moléculaires
Dantzer, Robert; Dardenne, Mireille; Haour, France et al

Book published by INSERM (1989)

Detailed reference viewed: 21 (0 ULg)
See detailInteractions neuroendocrino-immunitaires
Geenen, Vincent ULg; Legros, Jean-Jacques ULg; Franchimont, Paul

in Bazin, Hervé; Pastoret, Paul-Pierre; Govaerts, André (Eds.) Immunologie Animale (1990)

Detailed reference viewed: 4 (0 ULg)
See detailLes interactions neuroendocrino-immunitaires
Geenen, Vincent ULg

Conference given outside the academic context (1988)

Detailed reference viewed: 10 (0 ULg)
Peer Reviewed
See detailInteractions neurotrophiques dans l'oreille interne en développement ?
Lefebvre, Philippe ULg; Weber, Thierry; Rigo, Jean-Michel et al

in Acta Otolaryngologica Belgica (1989), 43(5), 403-409

Detailed reference viewed: 16 (8 ULg)
Peer Reviewed
See detailInteractions of a potential plant elicitor mannolipid with plant model membranes
Polo Lozano, Damien ULg; Lins, Laurence ULg; Ongena, Marc ULg et al

Poster (2014, February 07)

The use of chemical pesticides causes problems for human health and environment. In this context, there is an increasing interest for alternative products such as biopesticides. Among them, elicitors act ... [more ▼]

The use of chemical pesticides causes problems for human health and environment. In this context, there is an increasing interest for alternative products such as biopesticides. Among them, elicitors act on the plants by inducing systemic resistance against diseases caused by fungal, viral, bacterial agents and insects. The target of the elicitors is supposed to be the plant plasma membranes (PPM). The main mechanisms of interaction of many elicitors involve proteic receptors but lipid-based elicitors (LBE) may preferably interact with the lipidic fractions of PPM. However there is no detailed information at the molecular level on the PPM-LBE interactions. Our work is focused on a original synthetic LBE composed of a mannoside linked to a myristic acid. It has potential elicitor activities as shown by the assays on tobacco root cells. These activities could be related to its interaction with the lipidic phase of PPM. Since PPM are complex entities, the analyses of the PPM- molecule interactions are quite difficult. In this context, these interactions were carried out using biomimetic membranes of PPM such as Langmuir monolayers and multilayers. The effects of our molecule on these membranar systems were investigated by biophysical and in silico approaches. [less ▲]

Detailed reference viewed: 65 (10 ULg)