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See detailImaging air filled porosity in sea ice cover: Implication for sea ice permeability and gas exchange at the ice-atmosphere interface
Crabeck, O,; Galley, R,; Else, B, et al

Poster (2015, March)

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See detailUnique recurrence patterns of cervical intraepithelial neoplasia following excision of the squamo-columnar junction.
Herfs, Michael ULg; SOMJA, Joan ULg; Howitt, Brooke E. et al

in International journal of cancer. Journal international du cancer (2015), 136

Recent studies have identified a putative cell of origin for cervical intraepithelial neoplasia (CIN) and cervical cancer at the squamo-columnar junction (SCJ) and suggest that these cells may not ... [more ▼]

Recent studies have identified a putative cell of origin for cervical intraepithelial neoplasia (CIN) and cervical cancer at the squamo-columnar junction (SCJ) and suggest that these cells may not regenerate following excision (LEEP). This study addressed the impact of SCJ excision on the temporal dynamics, histologic and viral (HPV) characteristics of recurrent CIN. One hundred thirty one consecutive patients treated by excision and attending follow-up visits were enrolled. We compared recurrent and initial CIN with attention to excision margins, timing of recurrence, CIN grade, HPV types, p16 immunophenotype, and SCJ immunophenotype. During the follow-up period (up to four years), sixteen (12.2%) recurrences were identified. Four (25%) were identified at the first follow-up visit, closely resembled the initial CIN 2/3 in grade and HPV type, and were typically SCJ marker positive [SCJ(+)], suggesting non-excised (residual) disease. Twelve (75%) manifested after the first postoperative visit and all were in the ectocervix or in mature metaplastic epithelium. All of the 12 delayed recurrences were classified as CIN 1 and were SCJ (-). Nine of 11 SCJ (-) recurrences (82%) followed regressed spontaneously. Taken together, these results show that new lesions developing from any HPV infection are delayed and occur within the ectocervix or metaplastic epithelium. This dramatically lower risk of CIN 2/3 following successful SCJ excision suggests that removal of the SCJ could be a critical variable in reducing the risk of subsequent CIN 2/3 and cervical cancer. (c) 2014 Wiley Periodicals, Inc. [less ▲]

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See detailConclusion. De nouvelles approches pour repenser l’(in)sécurité
Wintgens, Sophie ULg; Grandjean, Geoffrey ULg; Vanhaeren, Stéphanie ULg

in Wintgens, Sophie; Grandjean, Geoffrey; Vanhaeren, Stéphanie (Eds.) L’insécurité en question. Définitions, enjeux et perspectives (2015)

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See detailIntroduction. L’(in)sécurité : entre représentations et perceptions des concepts
Grandjean, Geoffrey ULg; Wintgens, Sophie ULg; Vanhaeren, Stéphanie ULg

in Wintgens, Sophie; Grandjean, Geoffrey; Vanhaeren, Stéphanie (Eds.) L’insécurité en question. Définitions, enjeux et perspectives (2015)

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See detailL'insécurité en question. Définitions, enjeux et perspectives
Wintgens, Sophie ULg; Grandjean, Geoffrey ULg; Vanhaeren, Stéphanie ULg

Book published by Presses Universitaires de Liège (2015)

Ces dernières années, l’analyse et les pratiques de la sécurité et de l’insécurité ont fortement évolué sous l’influence de plusieurs facteurs fortement imbriqués, tels que le déclin de la souveraineté ... [more ▼]

Ces dernières années, l’analyse et les pratiques de la sécurité et de l’insécurité ont fortement évolué sous l’influence de plusieurs facteurs fortement imbriqués, tels que le déclin de la souveraineté nationale, l’accroissement de l’intensité des interactions transnationales ou encore l’éclatement conflictuel sous-tendu par des dynamiques identitaires. Ces constats et les représentations qui leur sont associées ont enjoint un réexamen de la manière dont la sécurité et l’insécurité se pensent et se pratiquent. Inscrit au cœur de ce double questionnement contemporain, cet ouvrage met en question la définition et les enjeux liés aux dynamiques actuelles d’(in)sécurité tout en proposant de nouvelles perspectives. Privilégiant les études empiriques et les approches originales en termes de politique interne et/ou externe, il repose sur trois axes de recherche transversaux : la (re)définition des concepts de sécurité et d’insécurité à l’heure de la globalisation ; les enjeux inhérents aux pratiques (in)sécuritaires et aux sentiments d’(in)sécurité qui les fondent ; les réponses à apporter aux questions de sécurité et d’insécurité. Complémentaire aux analyses disciplinaires classiques de ces objets de recherche en Science politique, cet ouvrage livre un regard neuf sur des thématiques plus que jamais d’actualité. [less ▲]

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See detailQuel sort pour les déchets moyennement et hautement radioactifs belges ? Controverses et traitements médiatiques entourant le choix de l’option
Parotte, Céline ULg; Lits, Grégoire

in Wintgens, Sophie; Grandjean, Geoffrey; Vanhaeren, Stéphanie (Eds.) L'insécurité en question. Définitions, enjeux et perspectives (2015)

Nous faisons le choix d’analyser le traitement médiatique du Plan Déchets, en le situant dans un processus plus large, c’est- à-dire incluant une pluralité d’acteurs intéressés, de construction du ... [more ▼]

Nous faisons le choix d’analyser le traitement médiatique du Plan Déchets, en le situant dans un processus plus large, c’est- à-dire incluant une pluralité d’acteurs intéressés, de construction du problème des déchets radioactifs en Belgique. Cette analyse repose sur une « conception relationnelle »3 de la définition des problèmes publics – ou sociaux. Il s’agit de comprendre les problèmes publics, et plus généralement la construction de po- litiques publiques destinées à les résoudre, à partir des relations liant différents types d’acteurs, ou, comme l’assemblage « des pratiques qui les produisent et les transforment sans cesse ». Nous nous intéresserons ici précisément aux actions et interactions liant plusieurs groupes d’acteurs participant à ce processus dynamique de construction du problème public : l’organisme d’intérêt public – l’ONDRAF –, les médias, le public, certaines associations environnementales ainsi que les représentants politiques à tous niveaux de pouvoir. [less ▲]

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See detailNew approach of calculation of dynamics of ball bearings
Bozet, Jean-Luc ULg; Servais, Christophe ULg

Conference (2015, March)

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See detailLes fonctions de la procédure en droit de la concurrence
Petit, Nicolas ULg; Neyrinck, Norman ULg

Conference (2015, March)

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See detailCortical responses to transcranial magnetic stimulation during Non-Rapid Eye Movement Sleep
Gosseries, Olivia ULg; Jaakko, Nieminen; Siclari, Francesca et al

Poster (2015, March)

Transcranial magnetic stimulation coupled to high-density electroencephalography (TMS-EEG) allows for directly and non-invasively stimulating the brain and recording the subsequent cortical response ... [more ▼]

Transcranial magnetic stimulation coupled to high-density electroencephalography (TMS-EEG) allows for directly and non-invasively stimulating the brain and recording the subsequent cortical response. Previous TMS-EEG studies have shown clear-cut differences between conscious and unconscious conditions. When subjects are unconscious, as in non-rapid eye movement (NREM) sleep early in the night (stage N3), anesthesia or coma, TMS typically triggers a stereotypical and local slow-wave response. When they are conscious, as in normal wakefulness and rapid eye movement sleep (REM) sleep, brain responses to TMS are long-lasting, widespread, complex, and differentiated. In this study, we performed TMS-EEG during NREM sleep in stage 2 (N2) and N3 on 7 healthy participants. Brain activity was recorded using a 60-channel TMS-compatible EEG and single-pulse TMS was applied (up to 285 pulses per session) on the superior parietal cortex. After each TMS session (5 to 15 sessions per night), subjects were awakened to ask for a dream report. TMS-EEG responses were analyzed using the global mean field amplitude (GMFA), the perturbational complexity index (PCI), as well as time-frequency measures. Our results show that the TMS-EEG response during N3 is larger and slower than during N2 sleep. The GMFA is higher and PCI is lower in N3 as compared to N2 sleep. Moreover, N3 recordings showed activation at lower frequency bands after TMS as compared to N2 sleep. Additionally, TMS-EEG responses vary depending on whether subjects do or do not report a dream. TMS-EEG might provide valuable information for characterizing neurophysiological fluctuations and levels of consciousness within NREM sleep. [less ▲]

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See detail(In)sécurités linguistiques francophones en Belgique : du taux d’insécurité aux facteurs d’(in)sécurité
Dassargues, Alix ULg

in L'insécurité en question : défis, enjeux et perspectives (2015, March)

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See detailConclusion
Famerie, Etienne ULg

in Ferrary, Jean-Louis; Pittia, Sylvie; Sanchez, Pierre (Eds.) La diplomatie romaine sous la République : réflexions sur une pratique (2015)

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See detailAnalysis of some finite difference schemes for slightly noisy time dependent signals
Dumont, Fabien ULg

Report (2015)

Various numerical differentiation methods have been developed to compute an approximated derivative of the signal from its discrete values. Amongst them, one of the most commonly applied is the finite ... [more ▼]

Various numerical differentiation methods have been developed to compute an approximated derivative of the signal from its discrete values. Amongst them, one of the most commonly applied is the finite difference method. Particularly in the case of experimental data, substantial noise or imprecision may be present in the signal. And here is the crux of the matter: straightforward schemes with short-differentiation steps will amplify this noise, often so much that the result appears to be unusable. While increasing the differentiation step has the positive effect of decreasing the noise, it also has two adverse effects: it produces a time shift compared with what would have been expected, and it introduces distortion by broadening and flattening the narrow features. The present study will focus on the moving-average filter on one hand, and on differentiation by some usual finite difference schemes on the other hand. Amongst relevant parameters, the influence of the sampling period and the differentiation step will be examined, in particular regarding their consequence on the time-accuracy and the noise filtering effect of the considered methods. [less ▲]

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See detailPresentation of the results of the fire resistance round robin on steel beam (EGOLF)
Dumont, Fabien ULg

Report (2015)

This presentation reports the statistical analysis conducted on the raw data issued from the TC2 14-1 round-robin performed by 16 fire testing laboratories members of EGOLF. The test specimen is a HEB300 ... [more ▼]

This presentation reports the statistical analysis conducted on the raw data issued from the TC2 14-1 round-robin performed by 16 fire testing laboratories members of EGOLF. The test specimen is a HEB300 hot rolled steel beam tested according to EN 1365-3. [less ▲]

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See detailDoes the production of Belgian bioethanol fit with European requirements on GHG emissions? Case of wheat
Belboom, Sandra ULg; Bodson, Bernard ULg; Léonard, Angélique ULg

in Biomass & Bioenergy (2015), 74

This paper undertakes an environmental evaluation of bioethanol production, using wheat cultivated in Belgium. Cultivation steps are modelled using Belgian specific data. Wheat transformation in ethanol ... [more ▼]

This paper undertakes an environmental evaluation of bioethanol production, using wheat cultivated in Belgium. Cultivation steps are modelled using Belgian specific data. Wheat transformation in ethanol relies on industrial data. GHG emissions of the whole life cycle are calculated and compared with the default values given by the European Renewable Energy Directive. Belgian wheat bioethanol achieves a 5% higher GHG reduction than the one mentioned in the European directive but impact repartition is different with a higher importance of cultivation step in our case. Belgian wheat bioethanol complies with the current sustainability criteria but is also able to conform to further ones. Sensitivity analyses are performed on the importance of N fertilizers and associated emissions known as main important parameters. These analyses reveal non negligible variations and then a range of available GHG reduction when using wheat bioethanol. [less ▲]

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