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See detailDu mode de définition de deux programmes de recherche en sociologie et en ethnométhodologie
Lejeune, Christophe ULg

in Carnets de Bord (2001), 2

Cet article examine la fondation de deux programmes scientifiques via l’étude de leur bibliographie, des traductions qu’ils opèrent et de leur définition de la mauvaise façon de faire science: leur ... [more ▼]

Cet article examine la fondation de deux programmes scientifiques via l’étude de leur bibliographie, des traductions qu’ils opèrent et de leur définition de la mauvaise façon de faire science: leur pathologie. Dans le « métier de sociologue », la cohérence entre l’importation bachelardienne de la rupture épistémologique et la sociologie critique permet de réaffirmer les dangers du substantialisme. L’ethnométhodologie s’offre quant à elle la sociologie comme pathologie. Elle traduit de manière singulière les règles de méthodes de Durkheim et Parsons en phénomènes ordinaires observables et descriptibles. L’analyse de l’opération concrète de fondation des principes de méthode de ces programmes de recherche sociologique offre une occasion d’envisager différemment le rapport de l’action à son contexte, de la sociologie à son objet, de la connaissance scientifique à la connaissance ordinaire. [less ▲]

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See detailPiaget e Skinner : opposizioni e convergenze
Richelle, Marc ULg

in Età Evolutiva (2001), 70

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See detailLate Miocene vegetation reconstruction with the CARAIB model
François, Louis ULg; Otto, Dominique; Fluteau, Frédéric et al

Conference (2001)

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See detailPhylogenetic relationships among the cyanobacteria based on 16S rRNA sequences
Wilmotte, Annick ULg; Herdman, Michael

in Garrity, George M; Castenholz, Richard W (Eds.) Bergey's Manual of Systematic Bacteriology. Volume One : The Archaea and the Deeply Branching and Phototrophic Bacteria (2001)

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See detailThe Vacuum UV Photoabsorption Spectrum of Methyl Chloride (CH3Cl) and its perdeuterated Isotopomer CD3Cl. I. A Rydberg Series Analysis.
Locht, Robert ULg; Leyh, Bernard ULg; Hoxha, A. et al

in Chemical Physics (2001), 272

The vacuum UV photoabsorption spectrum of CH3Cl has been recorded between 6 and 25 eV. A large number of vibronic bands are observed. These were partly ascribed to vibrationless Rydberg transitions. In ... [more ▼]

The vacuum UV photoabsorption spectrum of CH3Cl has been recorded between 6 and 25 eV. A large number of vibronic bands are observed. These were partly ascribed to vibrationless Rydberg transitions. In the higher energy range of 12-25 eV very weak diffuse bands are mostly assigned to transitions from the 3a1, 1e and 2a1 to 3s orbitals. In the 6-12 eV photon energy range, numerous weak to strong bands are observed. The sharpness of the features is very variable over the entire spectral region. In a first step, the interpretation of the spectrum and the assignment of the Rydberg transitions is based on the simple Rydberg formula. The observed features are classified in two groups of four series, each converging to one of the two spin-orbit components of the X2E state of CH3Cl+. Rydberg series of nsa1 (delta=1.069 and 1.064), npa1 (delta= 0.68 and 0.66), npe (delta= 0.438 and 0.427) and nd (delta= -0.040 and -0.092) characters are observed. The same measurements have been made for the first time on CD3Cl in the 6-12 eV photon energy range. The same Rydberg transitions are observed. Analogous series are characterized by about the same delta values: nsa1 (delta= 1.038 and 0.968), npa1 (delta= 0.65 and 0.61), npe (delta= 0.458 and 0.462) and nd (delta= -0.004 and -0.082). Ionization energies for CD3Cl X2E3/2 at 11.320 eV and X2E1/2 at 11.346 eV are deduced. In a second step, we fitted the experimental data for the nsa1 and npa1 states to an energy expression taking into account both the exchange interaction and the spin-orbit coupling. This accounts for the progressive switching from Hund's case (a) to Hund's case (c). [less ▲]

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See detailPolyploid formation in cotton is not accompanied by rapid genomic changes
Liu, B.; Brubaker, Cl.; Mergeai, Guy ULg et al

in Genome (2001), 44(3), 321-330

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See detailDonnées récentes sur la pathogenèse de l'infection à Microsporum canis chez les carnivores domestiques
Brouta, F.; Descamps, F.; Losson, Bertrand ULg et al

in Annales de Médecine Vétérinaire (2001), 145

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See detailCulture of very young Phaseolus vulgaris L. pods and plantlet regeneration.
Geerts, P.; Toussaint, André ULg; Mergeai, Guy ULg et al

in Acta Horticulture 560 : Proceedings of the Fourth International Symposium on In Vitro Cultureand Horticultural Breeding (2001)

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See detailMISE EN EVIDENCE D’UN MECANISME BIOCHIMIQUE EMPECHANT LA CROISSANCE DE LA SOUCHE PSYCHROPHILE RHODOTORULA AURANTIACA A19 AUX TEMPERATURES MODEREES
Sabri, Ahmed ULg

Doctoral thesis (2001)

Les industries qui s’intéressent à la culture des micro organismes adaptés aux basses températures sont souvent confrontées à l’incapacité de ces derniers à se développer au delà de 20°C. Cette exigence ... [more ▼]

Les industries qui s’intéressent à la culture des micro organismes adaptés aux basses températures sont souvent confrontées à l’incapacité de ces derniers à se développer au delà de 20°C. Cette exigence thermique représente un des obstacles majeurs à leur utilisation à grande échelle. Bien que le phénomène puisse apparaître comme un paradoxe thermodynamique, peu d’études s’y sont réellement intéressées. Par ce travail, nous voudrions apporter une contribution à la compréhension des causes de l’inaptitude des micro-organismes psychrophiles à se développer aux températures modérées. Dans ce contexte, l’étude de la levure psychrophile Rhodotorula aurantiaca A19, choisie comme modèle pour ses caractéristiques technologiques, a été abordée sous différents aspects. Ainsi dans une première partie, nous avons évalué les effets néfastes de la croissance aux températures modérées à différents niveaux cellulaires tant physiologique que morphologique et moléculaire. Les analyses morphologiques nous ont incités à focaliser notre étude sur le métabolisme des acyl CoAs et sur le rôle de ces derniers dans l’inaptitude de R. aurantiaca A19 à se développer aux températures modérées. [less ▲]

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See detailCompte rendu de Frédéric Barbier, Histoire du livre
Durand, Pascal ULg

in Bulletin des Bibliothèques de France (2001), 46/4

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See detailBone resorption in post-menopausal women with normal and low BMD assessed with biochemical markers specific for telopeptide derived degradation products of collagen type I
Reginster, Jean-Yves ULg; Henrotin, Yves ULg; Christiansen, C. et al

in Calcified Tissue International (2001), 69(3), 130-137

Biochemical markers of bone resorption can be used clinically to predict the risk of osteoporosis-related fractures (prognostic tool) and to assess the response of an osteoporotic patient to an ... [more ▼]

Biochemical markers of bone resorption can be used clinically to predict the risk of osteoporosis-related fractures (prognostic tool) and to assess the response of an osteoporotic patient to an antiresorptive therapy (monitoring tool). Our aim was to assess the ability of four currently marketed biochemical markers of bone resorption, based on the measurement of degradation products from collage type I telopeptides to monitor the elevated resorption associated with menopause. Women (846) were stratified for menopause, age, and bone mineral density and the following markers were measured: urinary cross-linked N-telopeptides of type I collagen (NTx), the levels of breakdown products of type I collagen C-telopeptides in serum (S-CTx), and in urine, by ELISA (U-CTx-E), and RIA (U-CTx-R). Furthermore, the ratio (a/b) between the aL form of CTx measured in the CTx RIA and the bL form measured in the ELISA was calculated. The mean difference was calculated for each marker in women with osteopenia (Op) or osteoporosis (PMO) (WHO definition) compared with healthy premenopausal (Pre) women and postmenopausal (N Post) women with normal bone mass. Serum CTx showed the highest elevation in post- compared with premenopausal women. All marker values were significantly higher in Op and PMO subjects compared with both Pre and to N Post women. Compared with premenopausal values, the largest elevation in both Op and PMO women was observed for serum CTx. Compared with N Post, urine NTx showed the highest increase in OP subjects. The a/b CTx ratio was elevated in post- compared with Pre women, but there was no difference in the ratio among N Post, Op, or PMO women. In conclusion, postmenopausal women showed elevated turnover with all bone resorption markers, but with substantial individual variation in resorption levels. Furthermore, the turnover process in postmenopausal women appears to be quantitatively different from the premenopausal stage, apparent as altered a/b CTx ratios. [less ▲]

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See detailPerspectives de vaccination anti-dermatophytique chez les carnivores domestiques
Descamps, F.; Brouta, F.; Losson, Bertrand ULg et al

in Annales de Médecine Vétérinaire (2001), 145

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See detailReconnaissance mutuelle, double incrimination et territorialité
Flore, Daniel ULg

in La reconnaissance mutuelle des décisions judiciaires pénales dans l’Union européenne (2001)

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See detailPrésentation de la recherche sur le logement urbain wallon.
Frankignoulle, Pierre ULg; Dawance, Sophie ULg; Malherbe, Alain

in Les Cahiers de l'Urbanisme (2001), 37

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See detailLe portage asymptomatique de Microsporum canis chez le chat
Mignon, Bernard ULg; Brouta, F.; Descamps, F. et al

in Annales de Médecine Vétérinaire (2001), 145

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See detailNews on antifungal drugs registered in Belgium for the treatment of dermatophytosis in domestic carnivores.
Hamoir, J.; Goret, M.; Mignon, Bernard ULg et al

in Annales de Médecine Vétérinaire (2001), 145

This note gives a progress report on the various molecules registered in Belgium which can be used for the treatment of dermatophytosis in domestic carnivores. Its purpose is not to develop the ... [more ▼]

This note gives a progress report on the various molecules registered in Belgium which can be used for the treatment of dermatophytosis in domestic carnivores. Its purpose is not to develop the therapeutic protocols used in this type of diseases but rather to describe these compounds according to their pharmacological and toxicological characteristics as well as to define their status in the current legal framework. [less ▲]

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See detailExperience-dependent changes in cerebral functional connectivity during human rapid eye movement sleep
Laureys, Steven ULg; Peigneux, Philippe ULg; Phillips, Christophe ULg et al

in Neuroscience (2001), 105(3), 521-525

One function of sleep is hypothesized to be the reprocessing and consolidation of memory traces (Smith, 1995; Gais et al., 2000; McGaugh, 2000; Stickgold et al., 2000). At the cellular level, neuronal ... [more ▼]

One function of sleep is hypothesized to be the reprocessing and consolidation of memory traces (Smith, 1995; Gais et al., 2000; McGaugh, 2000; Stickgold et al., 2000). At the cellular level, neuronal reactivations during post-training sleep in animals have been observed in hippocampal (Wilson and McNaughton, 1994) and cortical (Amzica et al., 1997) neuronal populations. At the systems level, using positron emission tomography, we have recently shown that some brain areas reactivated during rapid-eye-movement sleep in human subjects previously trained on an implicit learning task (a serial reaction time task) (Maquet et al., 2000). These cortical reactivations, located in the left premotor area and bilateral cuneus, were thought to reflect the reprocessing - possibly the consolidation - of memory traces during post-training rapid-eye-movement sleep. Here, the experience-dependent functional connectivity of these brain regions is examined. It is shown that the left premotor cortex is functionally more correlated with the left posterior parietal cortex and bilateral pre-supplementary motor area during rapid-eye-movement sleep of subjects previously trained to the reaction time task compared to rapid-eye-movement sleep of untrained subjects. The increase in functional connectivity during post-training rapid-eye-movement sleep suggests that the brain areas reactivated during post-training rapid-eye-movement sleep participate in the optimization of the network that subtends subject's visuo-motor response. The optimization of this visuo-motor network during sleep could explain the gain in performance observed during the following day. [less ▲]

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