References of "2010"
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See detailPhotoacclimation responses of a symbiotic sea anemone reveal an important host cellular plasticity
Roberty, Stéphane ULg; Fransolet, David ULg; Ladrière, Ophélie ULg et al

Poster (2010)

The high productivity of coral reef ecosystems is largely attributed to the mutualistic symbiosis between reef-building corals and their intracellular dinoflagellate in the genus Symbiodinium commonly ... [more ▼]

The high productivity of coral reef ecosystems is largely attributed to the mutualistic symbiosis between reef-building corals and their intracellular dinoflagellate in the genus Symbiodinium commonly referred to as zooxanthellae. These photosynthetic algae translocate a majority of their photosynthetically fixed carbon to the host and contribute to their metabolic needs and the calcification process. <i>Symbiodinium</i> must maintain a balance between the energy derived from the light reactions in the chloroplast and the amount of energy used during dark reactions and other metabolic processes. Nevertheless, in the natural environment the holobiont have to cope with daily and seasonal changes in light intensity, upsetting that balance and creating a stress that induces a physiological response (photoacclimation) to optimize growth rates. After a ten day exposition to high and very low light intensity, morphological and photophysiological analysis conducted on the symbiotic sea anemone, Anemonia manjano, reveal significant modifications of the host tissues ultrastructure and the Symbiodinium metabolic processes (photosynthesis, respiration). Those results highlight particularly important gastrodermal and ectodermal plasticity in which symbiotic cnidarians acclimate to the Symbiodinium physiological status (mainly photosynthesis) by varying the density of particular cellular types (e.g.: cnidocytes, gastrodermal cells) contained in their tissues. [less ▲]

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See detailHeat treatment of pigmented materials from es-Skhul (ca. 100 000 B.P., Israël)
Salomon, Hélène ULg; Vignaud, Colette; Coquinot, Yvan et al

Poster (2010)

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See detailInfection models for dermatophytes research
Mignon, Bernard ULg

Conference (2010)

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See detailMagnetocaloric effect in La0.75Sr0.25MnO3 manganite
Pekala, M.; Pekala, K.; Drozd, V. et al

in Journal of Magnetism & Magnetic Materials (2010), 322(21), 3460-3463

The polycrystalline manganite La0.75Sr0.25MnO3 prepared by an alternative carbonate precipitation route reveals the rhombohedral perovskite structure. Magnetization isotherms measured up to 2 T are used ... [more ▼]

The polycrystalline manganite La0.75Sr0.25MnO3 prepared by an alternative carbonate precipitation route reveals the rhombohedral perovskite structure. Magnetization isotherms measured up to 2 T are used to determine Curie temperature of 332 K by means of Arrott plot. Maximum of magnetic entropy change is found at Curie temperature. The relative cooling power equal to 64 J/kg for 1.5 T magnetic field, is superior as compared to the manganite with the same chemical composition from the sol–gel method. [less ▲]

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See detailDevelopment of lead-210 measurement in peat using polonium extraction. A procedural comparison
De Vleeschouwer, François; Sikorski, Jarek; Fagel, Nathalie ULg

in Geochronometria (2010)

Two chemical treatments for lead-210 measurement were compared on the sub-surface samples of a core from an ombrotrophic bog from East Belgium. The classical procedure involves a concentrated acid ... [more ▼]

Two chemical treatments for lead-210 measurement were compared on the sub-surface samples of a core from an ombrotrophic bog from East Belgium. The classical procedure involves a concentrated acid extraction of polonium. However, this treatment represents substantial health risks together with unknowns regarding both the degree of cleanliness and the Po extraction rate, and most importantly, is rather time consuming. We developed here an improved procedure involving an ashing step prior to acid extraction. This allows substantial improvements such as: 1/ the use of a relatively small amount of acid compared to the classical procedure and 2/ the substantial reduction of a total sample digestion time. Measurements of 210Pb concentrations were conducted by alpha spectrometry. Results show a good agreement of unsupported 210Pb activity obtained for both procedures, although some unknowns remain concerning the adsorption of 210Po on the plastic test tube, the volatilization of a small amount of ash, or the absorption of alpha particle at the alpha source surface. This however should not affect the 210Pb measurement as all the samples are spiked prior to ashing (i.e. the recoveries are fully monitored). Through this study, we are suggesting researchers to follow this new procedure in order to increase safety, cleanliness, better recovery and substantial time gain. [less ▲]

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See detailFrom Non-invasive Site Characterization to Site Amplification: Recent Advances in the Use of Ambient Vibration Measurements.
Bard, P-Y; et al.; Havenith, Hans-Balder ULg

in Geotechnical, Geological and Earthquake Engineering : Earthquake Engineering in Europe (2010)

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See detailVariability in carbon exchange of European croplands
Moors, E. J.; Jacobs, C.; Jans, W. et al

in Agriculture, Ecosystems & Environment (2010), 139

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See detailUn soir d’avril du côté d’Orval
Metzmacher, Maxime ULg

Learning material (2010)

Concert de chants d'oiseaux enregistré à Orval (Belgique)

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See detailLa critique néokantienne de Kant et l'instauration d'une théorie descriptiviste de la perception
Dewalque, Arnaud ULg

in Dialogue : Canadian Philosophical Review = Dialogue : Revue Canadienne de Philosophie (2010), 49(3), 413-433

This paper contributes to explore the historical background of contemporary conceptualism. It suggests that a step forward toward a more promising understanding of this historical background can be made ... [more ▼]

This paper contributes to explore the historical background of contemporary conceptualism. It suggests that a step forward toward a more promising understanding of this historical background can be made if we focus, not on the much-discussed, controversial position of Kant, but rather on the straightforward position of some main representatives of classical neo-Kantianism. My main hypothesis is that criticisms of Kant’s transcendantal aesthetics coming from Paul Natorp (1854–1924) and Bruno Bauch (1877–1942) may be regarded as a significant historical source for the so-called “content” conceptualism (especially in McDowell’s version), insofar as they imply that the contents of perception are conceptual contents. [less ▲]

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See detailAuto-assemblage moléculaire électro-assisté d’organothiols mono- et bipodes sur cuivre
Maho, Anthony ULg

Master's dissertation (2010)

L’auto-assemblage moléculaire sur métaux actif (Cu, Zn, Ni, …) permet de conférer aux surfaces des propriétés protectrices spécifiques (protection contre la corrosion, …) et des fonctionnalités propres ... [more ▼]

L’auto-assemblage moléculaire sur métaux actif (Cu, Zn, Ni, …) permet de conférer aux surfaces des propriétés protectrices spécifiques (protection contre la corrosion, …) et des fonctionnalités propres dans des domaines d’applications spécifiques (lubrification, biocompatibilité, …). En particulier, la formation de monocouches auto-assemblées d’organothiols sur substrats de cuivre polycrystallin offre des défis particulièrement intéressants. Les films générés démontrent d’excellentes propriétés d’adhérence, d’organisation et de protection, d’autant plus renforcées si le cuivre fait l’objet d’une réduction électrochimique préalable. Jusqu’à présent, l’auto-assemblage moléculaire sur le cuivre est réalisé de manière « passive » par simple immersion du substrat après réduction électrochimique dans une solution d’organothiols. L’originalité apportée dans le cadre de ce mémoire consiste à réaliser un greffage « actif » par adsorption sous polarisation cathodique afin d’assister l’auto-assemblage des molécules d’organothiols sur le substrat de cuivre par application d’un potentiel approprié. L’objectif majeur de ce travail est donc de démontrer que l’adsorption sous polarisation permet de former des assemblages moléculaires d’organothiols avec des avantages non-négligeables en termes de gain de temps et de qualités élevées des monocouches. Outre des alkylthiols normaux possédant un monopied d’ancrage, des monocouches d’alkyldithiols et d’alkyldithiocarboxyliques, munies d’un bipied d’ancrage, seront caractérisées dans l’optique de former des films soit plus stables, soit plus facilement éliminables ou transitoires, respectivement. [less ▲]

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See detailA 500-yr record of Northern Patagonian environmental changes: Lago Plomo and Lago Bertrand
Fagel, Nathalie ULg; Brix, J.; El Ouahabi, M. et al

Poster (2010)

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See detailAladdin nulling instrument
Barillot, Marc; Coudé Du Foresto, Vincent; Surdej, Jean ULg et al

in Spinoglio, L.; Epchtein, N. (Eds.) 3rd ARENA Conference: An Astronomical Observatory at CONCORDIA (Dome C, Antarctica) (2010)

The ALADDIN project aims at detecting warm dust populations around nearby main sequence stars. In order to achieve the significantly improved sensitivity with respect to existing instruments, the ... [more ▼]

The ALADDIN project aims at detecting warm dust populations around nearby main sequence stars. In order to achieve the significantly improved sensitivity with respect to existing instruments, the architecture of the system is focused and optimised for the mission: ALADDIN implements the nulling interferometry technique at the focal plane of a 2-telescope interferometer mounted on a rotating structural beam. Concerning the beam combining nulling instrument, the ALADDIN design is inherited from a Definition Study of the VLTI/GENIE instrument. In this paper, we demonstrate how the ALADDIN instrument preliminary definition can be made simpler and more representative of a space instrument than GENIE thanks to both the outstanding atmospheric properties of Dome C and the dedicated architecture of the system. Finally, we discuss the compatibility of the instrument with the Antarctic environment and constraints, and underline the experimental and industrial know-how learnt from the MAII and PERSEE nulling breadboards in which our Team is also involved. [less ▲]

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See detailFormation à la communication pour des directeurs d'école
Danse, Cédric ULg; Fossion, Gilles; Tuts, Jenny ULg et al

Learning material (2010)

Ce syllabus présente des aspects essentiels de la communication. Il s'intéresse en outre à la communication non violente en mettant l'accent sur l'assertivité et des techniques de gestion de conflits.

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See detailPieds et empreintes de pieds dans les cultes isiaques. Pour une meilleure compréhension des documents hispaniques
Puccio, Laetizia ULg

in Melanges de la Casa de Velazquez (2010), 40(2), 137-155

L’étude des cultes isiaques dans la péninsule Ibérique donne à connaître une série de documents qui représentent un pied sous sa forme réelle ou gravé sur des stèles votives. Se pose alors la question de ... [more ▼]

L’étude des cultes isiaques dans la péninsule Ibérique donne à connaître une série de documents qui représentent un pied sous sa forme réelle ou gravé sur des stèles votives. Se pose alors la question de l’origine de ce symbole. Apparenté aux divinités égyptiennes, il est synonyme de richesse et d’abondance dans la religion pharaonique. À partir de la vallée du Nil, les deux modèles se sont diffusés dans le monde méditerranéen et ils ont atteint l’Hispanie au IIe siècle en passant sans doute par le continent africain. Sans aucune référence dans la littérature antique, l’enquête menée autour de ces représentations et de leurs différentes déclinaisons n’autorise pas à leur attribuer une seule signification. Les pieds de Sérapis comme les stèles dédiées à Isis incarnent le plus souvent l’épiphanie divine, mais ils peuvent également être considérés comme de simples témoignages de dévotion. Lorsque les empreintes de pieds correspondent à celles de la déesse et que les stèles sont situées devant l’entrée du temple, elles pourraient faire référence à un rituel d’accueil. [less ▲]

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See detailNotariat et courtage immobilier. Soleil à l'horizon
Kohl, Benoît ULg

in Journal des Tribunaux (2010)

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See detailL'astronomie dans le monde
Manfroid, Jean ULg

Article for general public (2010)

Étoile à neutrons massive; Cinq galaxies lointaines détectées grâce à Hershel; Terres; NGC 7252; Hawk-I

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