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See detailCompte-rendu de l'ouvrage de G. Lloyd : In the Grip of Disease. Studies in the Greek Imagination
Nissen, Cécile ULg

in Archives Internationales d'Histoire des Sciences (2007), (158), 214-215

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See detailCompte-rendu de l'ouvrage de V. Nutton : Ancient Medicine
Nissen, Cécile ULg

in Archives Internationales d'Histoire des Sciences (2007), (158), 215-217

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See detailAnalysis of furan by GC/MS
Scholl, Georges ULg; Eppe, Gauthier ULg; Scippo, Marie-Louise ULg et al

Poster (2007)

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See detailCytogenetics of a new trispecies hybrid In cotton: [(Gossypium Hirsutum L. X G-Thurberi Tod.)(2) X G-Longicalyx Hutch. & Lee]
Konan, On.; D'Hont, A.; Baudoin, Jean-Pierre ULg et al

in Plant Breeding (2007), 126(2), 176-181

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See detailHemodynamic cerebral correlates of sleep spindles during human non-rapid eye movement sleep.
Schabus, Manuel ULg; Dang Vu, Thien Thanh ULg; Albouy, Geneviève ULg et al

in Proceedings of the National Academy of Sciences of the United States of America (2007), 104(32), 13164-9

In humans, some evidence suggests that there are two different types of spindles during sleep, which differ by their scalp topography and possibly some aspects of their regulation. To test for the ... [more ▼]

In humans, some evidence suggests that there are two different types of spindles during sleep, which differ by their scalp topography and possibly some aspects of their regulation. To test for the existence of two different spindle types, we characterized the activity associated with slow (11-13 Hz) and fast (13-15 Hz) spindles, identified as discrete events during non-rapid eye movement sleep, in non-sleep-deprived human volunteers, using simultaneous electroencephalography and functional MRI. An activation pattern common to both spindle types involved the thalami, paralimbic areas (anterior cingulate and insular cortices), and superior temporal gyri. No thalamic difference was detected in the direct comparison between slow and fast spindles although some thalamic areas were preferentially activated in relation to either spindle type. Beyond the common activation pattern, the increases in cortical activity differed significantly between the two spindle types. Slow spindles were associated with increased activity in the superior frontal gyrus. In contrast, fast spindles recruited a set of cortical regions involved in sensorimotor processing, as well as the mesial frontal cortex and hippocampus. The recruitment of partially segregated cortical networks for slow and fast spindles further supports the existence of two spindle types during human non-rapid eye movement sleep, with potentially different functional significance. [less ▲]

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See detailExamen de jurisprudence (1997-2005). Régimes matrimoniaux
Leleu, Yves-Henri ULg

in Revue Critique de Jurisprudence Belge (2007)

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See detailRetirement and cognitive reserve: a stochastic frontier approach applied to survey data
Adam, Stéphane ULg; Bonsang, Eric; Germain, Sophie ULg et al

Report (2007)

This paper proposes the use of the stochastic frontier approach to analyse the relationship between cognitive performance, retirement and non-professional activities of the 50+ individuals using data from ... [more ▼]

This paper proposes the use of the stochastic frontier approach to analyse the relationship between cognitive performance, retirement and non-professional activities of the 50+ individuals using data from three surveys conducted in Europe (the Survey on Health, Ageing and Retirement in Europe and the English Longitudinal Survey on Ageing) and United States (the Health and Retirement Study). Next to the strong relationship between cognitive performance, age and education, this study highlights the negative effect of retirement and the positive impact of non-professional activities and social contacts. [less ▲]

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See detailSimple formula for evaluating the fire resistance of axially loaded steel square hollow section columns filled with concrete
Dotreppe, Jean-Claude ULg; Binh, C. T.; Chuong, N. T. et al

in Proceedings of the 1st International Conference on Modern Design, Construction and Maintenance of Structures (2007)

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See detailLa localisation des grandes zones logistiques
Merenne-Schoumaker, Bernadette ULg

in Bulletin de la Société Géographique de Liège (2007), (49), 31-40

The growth of logistics has recently fathered many new zones of specialized activities, called most of the times parks or logistic platforms. The objective of the article consists in understanding their ... [more ▼]

The growth of logistics has recently fathered many new zones of specialized activities, called most of the times parks or logistic platforms. The objective of the article consists in understanding their development and in identifying the logics of location. For this purpose, we have first tried to identify better the domain of activities: types of logistics, carried out operations, concerned sectors, concerned operators... Afterwards, on the basis of data mostly coming from professional circles, we have attempted to identify the factors and constraints of the new zones location, and to specify the mechanisms of the new real estate business linked to those zones, our goal consisting in bringing out the main principles of location on the scale of the countries, regions and sites choices. In the light of this first analysis, the logic seems pretty specific and takes place undoubtedly between the logic of industries and services. [less ▲]

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See detailEconomie de marché, régulations sectorielles et droit économique
Thirion, Nicolas ULg

in Thirion, Nicolas (Ed.) Libéralisations, privatisations, régulations. Aspects juridiques et économiques des régulations sectorielles. Marchés financiers - Télécoms - Médias - Santé (2007)

Etude destinée à introduire un ouvrage interdisciplinaire (droit / économie) sur les effets des régulations sectorielles sur l'ordre économique et polique des Etats membres de l'Union européenne

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See detailLa régulation économique et ses implications juridiques: enjeux et débats
Thirion, Nicolas ULg

in Thirion, Nicolas; Peltzer, Patrick (Eds.) La régulation économique dans la vie des affaires (2007)

Etude destinée à identifier les différentes questions juridiques auxquelles donne lieu un processus de libéralisation/ régulation d'un secteur économique

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See detailCharge distribution in 3'-deoxythymidine-fullerene: Mass spectrometry, laser excitation, and computational studies
Greisch, Jean-François ULg; Weinkauf, R.; De Pauw, Edwin ULg et al

in Israel Journal of Chemistry (2007), 47(1), 25-35

Electrospray ionization of the donor-spacer-acceptor model system 3'-imino[60]fulleryl-3'-deoxythymidine molecule (FdT) produces deprotonated negatively charged species (dFdT). In this paper, we ... [more ▼]

Electrospray ionization of the donor-spacer-acceptor model system 3'-imino[60]fulleryl-3'-deoxythymidine molecule (FdT) produces deprotonated negatively charged species (dFdT). In this paper, we investigate where the negative charge is localized and whether its location can be manipulated. The fragmentation of dFdT is studied experimentally by mass spectrometry using both collisional and photoactivation. Besides fragmentation, photoexcitation of anions stored in an ion trap leads to electron photodetachment. The competition between the two channels is studied as a function of the excitation wavelength. Starting from the neutral parents, two families of dFdT molecules are computationally identified. Deprotonation takes place on the 3'-deoxythymidine (dT) subunit, either on the thymine at N3 or on the deoxyribose residue at O5'. Deprotonation in N3 leads to negatively charged molecules with an extended geometry and the excess charge largely localized on the dT. The O5'-deprotonation leads to lower-energy folded conformers stabilized by an additional bond (C-O or C-H) with the nearby C-60-N acceptor part, and the negative charge is mostly localized on the fullerene. The calculated electron detachment energies are higher for the extended N3dFdT conformers than for the O5'dFdT ones. Multiphoton photodetachment experiments at 1064 nm indicate the negative charge to be on the C-60 unit. No indication for a photoinduced charge transfer was found. In MS beside the C-60 anion a C60NH, - fragment is observed, which implies a double intramolecular H transfer. The computed energy of the corresponding dFdT, stabilized by two H-C-60 bonds, is intermediate between N3 and O5' deprotonated molecules. [less ▲]

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See detailAftermath of the late Frasnian mass extinction (Upper Devonian) on brachiopods in the Namur-Dinant Basin (Belgium).
Mottequin, Bernard ULg

in Budd.; Streng, M.; Daley, A. C. (Eds.) et al Programme with abstracts of the 51st Palaeontological Association Annual Meeting (2007)

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See detailVector versus Scalar Spatial Solitons in Microstructured Optical Fibres
Drouart, F.; Nicolet, A.; Renversez, G. et al

in Proceedings of the 16th Conference on the Computation of Electromagnetic Fields, COMPUMAG 2007 (2007)

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See detailMutational Analysis Of The Tre2 Oncogene Encoding An Inactive Rabgap
Bizimungu, C.; Thomas, Annick ULg; Brasseur, Robert ULg et al

in Biotechnology Letters (2007), 29(12), 1927-37

The TRE2 oncoprotein is structurally related to the RabGAP (GTPase-activating protein) family. However, TRE2 seems enzymatically inactive. Two regions are important for its lack of GAP activity. First ... [more ▼]

The TRE2 oncoprotein is structurally related to the RabGAP (GTPase-activating protein) family. However, TRE2 seems enzymatically inactive. Two regions are important for its lack of GAP activity. First, the TBC domain, forming the catalytically active domain of RabGAPs, is non-functional in the oncoprotein. Also involved in TRE2 inactivity is the 93-aa region flanking the TBC domain on the C-terminal side. In order to identify the residues responsible for non-functionality, we performed hydrophobic cluster analysis of the oncoprotein sequence, combined with secondary structure prediction, receptor-binding domain analysis, and a tilted peptide calculation. These analyses were complemented with site-directed and random mutagenesis experiments. On the basis of our data, we hypothesize that the lack of secondary structure of the region flanking the TBC domain in TRE2 may explain why this region plays a role in the lack of GAP activity, even when a potentially functional TBC domain is present. [less ▲]

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See detailProbing ultrafast purely electronic charge migration in small peptides
Remacle, Françoise ULg; Levine, R. D.

in Zeitschrift Fur Physikalische Chemie-International Journal Of Research In Physical Chemistry & Chemical Physics (2007), 221(5), 647-661

A pump-probe experiment that can examine a pure charge migration on a time scale short compared to the onset of nuclear motion is discussed. The mass spectrometric studies of Schlag et al. suggest that ... [more ▼]

A pump-probe experiment that can examine a pure charge migration on a time scale short compared to the onset of nuclear motion is discussed. The mass spectrometric studies of Schlag et al. suggest that short peptide terminated by an aromatic amino acid are particularly suitable test compounds. The pump pulse needs to ionize the molecule on a time scale short compared to the period of the electronic motion, typically sub-fs. However, ionization occurs preferentially when the electrical field of the light is maximal so that the duration of the pulse envelope can be somewhat longer. Detection by photoelectron spectrometry of the peptide cation, to produce a dication, is shown to be able to probe the electronic rearrangement. [less ▲]

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See detailKnowledge-aided Array Calibration for Registration-based Range-dependence Compensation in Airborne STAP Radar with Conformal Antenna Arrays
Ries, Philippe; Lesturgie, Marc; Lapierre, Fabian D. et al

Conference (2007)

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See detailStudy of transformations and microstructural modification in Ti-LCB and T-555 alloys using Differential Scanning Calorimetry
Carton, Marc ULg; Pascal, Jacques; Clement, Nicolas et al

in Proceedings of Ti-2007 Science and technology - 11th World Conference on Titanium (JIMIC 5) (2007)

The aerospace industry is the single largest market for titanium products primarily due to the exceptional strength to weight ratio, elevated temperature performance and corrosion resistance. Titanium ... [more ▼]

The aerospace industry is the single largest market for titanium products primarily due to the exceptional strength to weight ratio, elevated temperature performance and corrosion resistance. Titanium applications are most significant in jet engine and airframe components that are subject to high temperatures. The studied Ti-LCB and Ti-555 titanium alloys must present good properties to fatigue damage as they are located in a low-pressure compressor. In order to avoid this damage, an optimized alloy microstructure is required. In our case, the optimal microstructure would be a beta matrix in which small alpha particles are uniformly distributed, obtained after a combination of thermomechanical and thermal treatments. The understanding of the mechanisms ruling the microstructure evolution is achieved through the study of phase transformations versus temperature. During heating, the ωath phase is transformed into the ωiso phase, allowing itself the appearance of the α phase. Then this α phase is transformed progressively into the β phase, and the structure becomes totally β when the transus temperature is reached. Therefore, a thermal analysis tool such as DSC (Differential Scanning Calorimetry) was used in order to characterise the phase transformations of the material during imposed controlled temperature programs. [less ▲]

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See detailSmoothing the mosaic subclinical melanoderma by calcipotriol.
Pierard, Claudine ULg; Paquet, Philippe ULg; Quatresooz, Pascale ULg et al

in Journal of the European Academy of Dermatology & Venereology (2007), 21(5), 657-61

BACKGROUND: The observation of photo-exposed skin under ultraviolet light reveals a mosaic pattern of varying intensity in epidermal melanization. Several patterns of mosaic subclinical melanoderma (MSM ... [more ▼]

BACKGROUND: The observation of photo-exposed skin under ultraviolet light reveals a mosaic pattern of varying intensity in epidermal melanization. Several patterns of mosaic subclinical melanoderma (MSM) have been described using a specially designed CCD camera and the ultraviolet light-enhanced visualization (ULEV) method. Vitamin D(3) and its analogues influence the biology of keratinocytes and melanocytes. OBJECTIVE: To assess the effect of calcipotriol on MSM. METHODS: This randomized split-face study was conducted in 27 men to compare the effect of once daily applications of 5% calcipotriol cream or a moisturizing cream on the heterogeneity of facial MSM. Computerized image analysis of video images was used at 1-month intervals before and during a 2-month treatment, as well as during a 3-month follow-up. RESULTS: At both sites, the average melanin content of the epidermis showed no significant change over time. However, the mottled appearance was smoothened at the calcipotriol site, whereas it was increased at the site receiving the moisturizer. CONCLUSION: The decreased heterogeneity in MSM after calcipotriol applications suggests a control of the epidermal melanocyte unit by the vitamin D(3) derivative. [less ▲]

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See detailClinique du sujet et hyperspécialisation du soin en hôpital de jour: quand la réalité dépasse la fiction
Massart, Nicolas ULg; Conraads, Valérie; Argento, Gino et al

in Revue des Hôpitaux de Jour Psychiatriques et des Thérapies Institutionnelles (2007), 9

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