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See detailSemiotica della fotografia. Investigazioni teoriche e pratiche di analisi
Dondero, Maria Giulia ULg; Basso Fossali, Pierluigi

Book published by Guaraldi Editore - 2nd ed. (2008)

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See detailAphid and plant volatiles induce oviposition in an aphidophagous hoverfly
Verheggen, François ULg; Arnaud, Ludovic; Bartram, Stefan et al

in Journal of Chemical Ecology (2008), 34(3), 301-307

Episyrphus balteatus DeGeer (Diptera, Syrphidae) is an abundant and efficient aphid-specific predator. We tested the electroantennographic (EAG) response of this syrphid fly to the common aphid alarm ... [more ▼]

Episyrphus balteatus DeGeer (Diptera, Syrphidae) is an abundant and efficient aphid-specific predator. We tested the electroantennographic (EAG) response of this syrphid fly to the common aphid alarm pheromone, (E)-beta-farnesene (E beta F), and to several plant volatiles, including terpenoids (mono- and sesquiterpenes) and green leaf volatiles (C6 and C9 alcohols and aldehydes). Monoterpenes evoked significant EAG responses, whereas sesquiterpenes were inactive, except for the aphid alarm pheromone (E beta F). The most pronounced antennal responses were elicited by six and nine carbon green leaf alcohols and aldehydes [i.e., (Z)-3-hexenol, (E)-2-hexenol, (E)-2-hexenal, and hexanal]. To investigate the behavioral activity of some of these EAG-active compounds, E. balteatus females were exposed to R-(+)-limonene (monoterpene), (Z)-3-hexenol (green leaf alcohol), and E beta F (sesquiterpene, common aphid alarm pheromone). A single E. balteatus gravid female was exposed for 10 min to an aphid-free Vicia faba plant that was co-located with a semiochemical dispenser. Without additional semiochemical, hoverfly females were not attracted to this plant, and no oviposition was observed. The monoterpene R-(+)-limonene did not affect the females' foraging behavior, whereas (Z)-3-hexenol and E beta F increased the time of flight and acceptance of the host plant. Moreover, these two chemicals induced oviposition on aphid-free plants, suggesting that selection of the oviposition site by predatory hoverflies relies on the perception of a volatile blend composed of prey pheromone and typical plant green leaf volatiles. [less ▲]

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See detailGenre, emploi et marché du travail : un tableau contrasté
Gavray, Claire ULg

in Cornet, Annie; Laufer, Jacqueline; Belghiti-Mahut, S. (Eds.) GRH et genre : les défits de l'égalité hommes-femmes (2008)

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See detailTensions entre planification stratégique et prise d’opportunité dans le cadre de l’aménagement des villes moyennes
Ruelle, Christine ULg; Teller, Jacques ULg

in Cadé, Daniel; Diab, Youssef (Eds.) La Ville durable : Décision, Action, Financement, Communication (2008)

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See detailMothflies (Diptera : Psychodidae) in hospitals: A guide to their identification and methods for their control
Verheggen, François ULg; Mignon, Jacques ULg; Louis, Josiane ULg et al

in Acta Clinica Belgica (2008), 63(4), 251-255

Repeated observation of "mothflies" at CHU Brugmann (Horta site hospital in Brussels) is not an isolated incident. Many public buildings have been infested by these Diptera of the Psychodidae Family ... [more ▼]

Repeated observation of "mothflies" at CHU Brugmann (Horta site hospital in Brussels) is not an isolated incident. Many public buildings have been infested by these Diptera of the Psychodidae Family. Although the species currently seen in Belgium is not a danger to human health, any infestation should be swiftly eradicated so as to limit the risks of a massive proliferation, source of hygiene problems and of potential bacterial dissemination. A good knowledge of adult and larval biology allows the potential sites of infestation to be quickly identified. The method to be envisaged to solve the problem will combine different approaches such as removing the risk factors (decomposing organic matter), monitoring egg-laying sites, applying caustic soda-based products and possibly treating with insecticide. [less ▲]

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See detailL'héritage des études sociales de l'objet dans l'action
Melard, François ULg

in Melard, François (Ed.) Écologisation : Objets et concepts intermédiaires (2008)

Ce chapitre introductif vise à présenter une série de perspectives de recherche associées à l'étude des objets et dispositifs socio-techniques selon leurs modes d'engagement dans l'action : l'objet ... [more ▼]

Ce chapitre introductif vise à présenter une série de perspectives de recherche associées à l'étude des objets et dispositifs socio-techniques selon leurs modes d'engagement dans l'action : l'objet "transparent", l'objet "média" ou encore l'objet "médiateur". [less ▲]

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See detailLocal Buckling Check According to Eurocode-3 for Plastic-hinge Analysis of 3D Steel Frames
Hoang, Van Long ULg; Nguyen, Dang Hung

in Engineering Structures (2008), 30

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See detailComment je previens...l'endocardite infectieuse: une meilleure hygiene bucco-dentaire plutot qu'une antibioprophylaxie systematique?
Morimont, P.; Frippiat, F.; LANCELLOTTI, Patrizio ULg et al

in Revue Médicale de Liège (2008), 63(11), 640-2

Prophylaxis for infective endocarditis has been recommended on the basis of the supposed pathophysiology of the disease, although no randomised clinical trial has confirmed its efficacy. Bacteraemia ... [more ▼]

Prophylaxis for infective endocarditis has been recommended on the basis of the supposed pathophysiology of the disease, although no randomised clinical trial has confirmed its efficacy. Bacteraemia resulting from daily activities is much more likely to cause infective endocarditis than bacteraemia associated with invasive medical procedures. As a result, recommendations for antibiotic prophylaxis tend now to be severely restricted. [less ▲]

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See detailLe point sur le diagnostic de l’aspergillose naso-sinusale chez le chien.
Billen, Frédéric ULg; Clercx, Cécile ULg; Peeters, Dominique ULg

in Annales de Médecine Vétérinaire (2008), 152(2)

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See detailAn original adaptation of photosynthesis in the marine green alga Ostreococcus.
Cardol, Pierre ULg; Bailleul, Benjamin; Rappaport, Fabrice et al

in Proceedings of the National Academy of Sciences of the United States of America (2008), 105(22), 7881-6

Adaptation of photosynthesis in marine environment has been examined in two strains of the green, picoeukaryote Ostreococcus: OTH95, a surface/high-light strain, and RCC809, a deep-sea/low-light strain ... [more ▼]

Adaptation of photosynthesis in marine environment has been examined in two strains of the green, picoeukaryote Ostreococcus: OTH95, a surface/high-light strain, and RCC809, a deep-sea/low-light strain. Differences between the two strains include changes in the light-harvesting capacity, which is lower in OTH95, and in the photoprotection capacity, which is enhanced in OTH95. Furthermore, RCC809 has a reduced maximum rate of O(2) evolution, which is limited by its decreased photosystem I (PSI) level, a possible adaptation to Fe limitation in the open oceans. This decrease is, however, accompanied by a substantial rerouting of the electron flow to establish an H(2)O-to-H(2)O cycle, involving PSII and a potential plastid plastoquinol terminal oxidase. This pathway bypasses electron transfer through the cytochrome b(6)f complex and allows the pumping of "extra" protons into the thylakoid lumen. By promoting the generation of a large DeltapH, it facilitates ATP synthesis and nonphotochemical quenching when RCC809 cells are exposed to excess excitation energy. We propose that the diversion of electrons to oxygen downstream of PSII, but before PSI, reflects a common and compulsory strategy in marine phytoplankton to bypass the constraints imposed by light and/or nutrient limitation and allow successful colonization of the open-ocean marine environment. [less ▲]

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See detailLa laïcité à l'épreuve de ses usages
Brausch, Géraldine ULg

in Jacquemain, Marc; Rosa-Rosso, Nadine (Eds.) Du bon usage de la laïcité (2008)

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See detailBase de données sur les prix artistiques dans l'entre-deux-guerres au Québec
Dozo, Björn-Olav ULg; Lapointe, Olivier

Textual, factual or bibliographical database (2008)

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See detailDébats belges pour une politique migratoire. Mapping des acteurs
Perrin, Nathalie ULg; Stockmans, Pieter

Book published by Fondation Roi Baudouin (2008)

Cette publication propose un inventaire des principaux acteurs qui contribuent ou peuvent contribuer à définir une politique migratoire pour la Belgique ; elle fait aussi le point sur leurs prises de ... [more ▼]

Cette publication propose un inventaire des principaux acteurs qui contribuent ou peuvent contribuer à définir une politique migratoire pour la Belgique ; elle fait aussi le point sur leurs prises de position récentes. Quel est par exemple le point de vue de la FGTB sur une régularisation ? Que pense la FEB d’une nouvelle migration économique ? Que dit le Conseil des Femmes sur l’accueil des primo-arrivants ? Et bien d’autres encore. [less ▲]

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See detailThe hallucinating brain: A review of structural and functional neuroimaging studies of hallucinations
Allen, P.; Laroi, Frank ULg; McGuire, P. K. et al

in Neuroscience & Biobehavioral Reviews (2008), 32(1), 175-191

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See detailIl problema della pace
Schweitzer, Albert; Ricciardi, Stefania ULg

in Barillari, Simone (Ed.) Costruire la pace. Discorsi dei premi Nobel per la pace (2008)

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See detailDifferences and similarities in the sensory and cognitive signatures of voice-hearing, intrusions and thoughts
Moritz, S.; Laroi, Frank ULg

in Schizophrenia Research (2008), 102(1-3), 96-107

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