Publications ORBi OA
Bookmark and Share    
Full Text
See detailDatabase "SIGMA Pro" information system and bibliographical management of active substances of plant protection products and biocides.
Rung, J.; Tricot, B.; Copin, A. et al

in Toegepaste Biologische Wetenschappen) (2001), 66(2b),

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailModes of action of biocontrol agents of postharvest diseases: challenges and difficulties.
Jijakli, Mohamed ULg; Grevesse, C.; Lepoivre, Philippe ULg

in Bulletin OILB/SROP = IOBC/WPRS Bulletin (2001), 24(3), 317-318

Detailed reference viewed: 48 (1 ULg)
Full Text
Peer Reviewed
See detailRt-Pcr-Elosa Tests On Pooled Sample Units For The Detection Of Virus Y In Potato Tubers
Chandelier, Anne; Dubois, Nathalie ULg; Baelen, Frédéric et al

in Journal of Virological Methods (2001), 91(2), 99-108

Detailed reference viewed: 11 (1 ULg)
Full Text
See detailNulling interferometry with IRSI-Darwin: further study of the aperture configurations
Absil, Olivier ULg

in Surdej, Jean; Swings, Jean-Pierre; Caro, Denise (Eds.) et al 36th Liège International Astrophysics Colloquium (2001)

After a brief introduction to nulling interferometry, we emphasize the limitations of this technique for the detection of exoplanets, and the need for internal modulation, a recent technique for fast ... [more ▼]

After a brief introduction to nulling interferometry, we emphasize the limitations of this technique for the detection of exoplanets, and the need for internal modulation, a recent technique for fast signal chopping. The principles of internal modulation are then discussed and illustrated with an example. Our contribution to the Darwin mission deals with the study of new aperture configurations using internal modulation. the best two configurations identified among an infinity of new possibilities are presented. As compared to the current Darwin configuration, the sensitivity to the planetary signal is improved by a factor of two, resulting in a fourfold speedup in the detection and characterization of exoplanets. [less ▲]

Detailed reference viewed: 14 (2 ULg)
Full Text
Peer Reviewed
See detailIdentification of several environmental odours with tin oxide sensor array : three years later
Romain, Anne-Claude ULg; Nicolas, Jacques ULg; Maternova, J.

Poster (2001)

The paper discusses the ability of recognition models to classify malodours in the environment three years after their calibration, with the same sources releasing odours. Two methodologies applicable ... [more ▼]

The paper discusses the ability of recognition models to classify malodours in the environment three years after their calibration, with the same sources releasing odours. Two methodologies applicable either in the lab or in the field are used. The effect of the long term drift of the sensors is highlighted on the results of principal component analysis and of discriminant function analysis. The paper examines also the applicability of some drift counteraction methods proposed in the literature. Handled with some care, a correction based on the drift direction in the principal components subspace should be applicable to the classification of real odorous sources in the field. [less ▲]

Detailed reference viewed: 20 (2 ULg)
Full Text
Peer Reviewed
See detailThe P2Y1 receptor antagonist adenosine-2',5'-diphosphate non-selectively antagonizes the platelet P2X1 ion channel.
Oury, Cécile ULg; Toth-Zsamboki, Emese; Tytgat, Jan et al

in Thrombosis and Haemostasis (2001)

This letter indicates a lack of specificity of a platelet P2Y1 receptor antagonist.

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailEquilibrium basal-plane magnetization of superconductive YNi(2)B(2)C: The influence of nonlocal electrodynamics
Thompson, J. R.; Silhanek, Alejandro ULg; Civale, L. et al

in Physical Review. B : Condensed Matter (2001), 64(2),

For a single crystal of YNi(2)B(2)C superconductor, the equilibrium magnetization M in the square basal Plane has been studied experimentally as a function of temperature and magnetic field. While the ... [more ▼]

For a single crystal of YNi(2)B(2)C superconductor, the equilibrium magnetization M in the square basal Plane has been studied experimentally as a function of temperature and magnetic field. While the magnetization M(H) deviates from conventional London predictions, a recent extension of London theory (to include effects of nonlocal electrodynamics) describes the experiments accurately. The resulting superconductive parameters are well behaved. These results are compared with corresponding findings for the case with M perpendicular to the basal plane. [less ▲]

Detailed reference viewed: 5 (1 ULg)
Full Text
See detailEléments pour une politique du volontariat
Defourny, Jacques ULg; Van Buggenhout, Beatrice; D'hondt, Sarah

Book published by Fondation Roi Baudouin (2001)

Detailed reference viewed: 74 (6 ULg)
Full Text
See detailRapport sur le “Workshop on the open archive initiative (OAI) and peer review journals in Europe” - Genève (CERN) 22 au 24 mars 2001
Jérôme, Simone

in Cahiers de la Documentation = Bladen voor Documentatie (2001), (4), 59-63

Detailed reference viewed: 24 (7 ULg)
Full Text
Peer Reviewed
See detailInfluence of nonlocal electrodynamics on the anisotropic vortex pinning in YNi2B2C
Silhanek, Alejandro ULg; Thompson, J. R.; Civale, L. et al

in Physical Review. B : Condensed Matter (2001), 64(1),

We have studied the pinning force density F-p of YNi2B2C superconductors for various field orientations. We observe anisotropies both between the c axis and the basal plane and within the plane that ... [more ▼]

We have studied the pinning force density F-p of YNi2B2C superconductors for various field orientations. We observe anisotropies both between the c axis and the basal plane and within the plane that cannot be explained by the usual mass anisotropy. For magnetic field H parallel toc, the reorientation structural transition in the vortex lattice due to nonlocality, which occurs at a field H(1)similar to1 kOe, manifests itself as a kink in F-p(H). When H perpendicular toc, F-p is much larger and has a quite different H dependence, indicating that other pinning mechanisms are present. In this case the signature of nonlocal effects is the presence of a fourfold periodicity of F-p within the basal plane. [less ▲]

Detailed reference viewed: 6 (1 ULg)
Full Text
See detailThymic T-cell tolerance of neuroendocrine functions: physiology and pathophysiology
Geenen, Vincent ULg; Kecha, Ouafae; Brilot, Fabienne et al

in Halbhuber, Karl-Jürgen; Kinoshita, Yoshihiro (Eds.) Recent Advances in the Immunobiology of the Thymus (2001)

Detailed reference viewed: 27 (2 ULg)
Full Text
See detailImage analysis of carbides in high speed steel rolls and their relationship with the mechanical properties
De Colnet, Laurence; Pirard, Eric ULg; Lecomte-Beckers, Jacqueline ULg et al

in Proceedings of the Euromat Metallographic Conference, Progress in Metallography (2001)

Image analysis is used to describe quantitatively various different natures of carbides in high speed steel rolls. After an etching judiciously selected, the identification and the extraction of the ... [more ▼]

Image analysis is used to describe quantitatively various different natures of carbides in high speed steel rolls. After an etching judiciously selected, the identification and the extraction of the carbide types are based on spectral differences. For every carbide type, three parameters are measure : the size, the spatial distribution and the volume fraction. The size of martensite grain is also measured. [less ▲]

Detailed reference viewed: 75 (7 ULg)
Full Text
See detailLa fouine
Libois, Roland ULg

Learning material (2001)

Detailed reference viewed: 7 (2 ULg)
Full Text
Peer Reviewed
See detailDe Bergson à Merleau-Ponty : pour une anthropologie de la mémoire
Frère, Bruno ULg

in Réseaux : Revue Interdisciplinaire de Philosophie Morale et Politique (2001), 18

On l'a dit et redit, la description de la mémoire par H. Bergson renvoie essentiellement, sinon à la mise en scène d'un mécanisme individuel clos et hermétique, en tout cas à l'aperçu d'une élaboration ... [more ▼]

On l'a dit et redit, la description de la mémoire par H. Bergson renvoie essentiellement, sinon à la mise en scène d'un mécanisme individuel clos et hermétique, en tout cas à l'aperçu d'une élaboration strictement "psychologique" de souvenirs que tout au plus "des mots permettent d'exprimer". Il n'est dès lors pas étonnant qu'à cet égard, Bergson n'ait pas vu "que notre mémoire se ressaisit, au fur et à mesure que nous avançons, (...) sous une forme nouvelle" au sein de cadres sociaux dont l'évolution n'a de cesse de restructurer les souvenirs qui la composent. Selon Halbwachs, "il n'est pas de souvenir qui puisse être dit purement intérieur, c'est-à-dire qui ne puisse se conserver que dans la mémoire individuelle". Ce que le sociologue reproche ainsi au philosophe c'est de ne pas tenir compte du fait qu'un "souvenir reproduit avant tout une perception collective". De ce fait, sa pensée ne permettrait nullement de composer avec la dimension sociale des souvenirs puisqu'ils appartiendraient en propre à divers psychismes hétérogènes qui, du point de vue de ceux qui les observent, se trouvent séparés et isolés "comme par une multitude de cloisons étanches". Ce que nous souhaitons suggérer ici n'est pas, à proprement parler, une nouvelle lecture "exhaustive" de Matière et mémoire qui prétendrait sauver Bergson de la critique sociologique dorénavant consacrée d'Halbwachs. L'ambition de ces lignes sera plutôt d'envisager la manière dont le dernier Merleau-Ponty, s'interrogeant sur l'importance décisive de ce qu'il nomme "le monde culturel", nous autorise à envisager une conception de la mémoire qui réserverait une place réelle à l'altérité tout en se réclamant d'une forme de bergsonisme sensiblement renouvelée et tout en inscrivant ses thèses sur un même terrain philosophique. [less ▲]

Detailed reference viewed: 149 (4 ULg)
Full Text
Peer Reviewed
See detailIrradiation du petit bassin et fonction ano-rectale.
Gervaz, P; COUCKE, Philippe ULg; Gillet, M

in Gastroentérologie Clinique et Biologique (2001), 25

Le traitement adjuvant des cancers du rectum a pour buts de stériliser la maladie résiduelle infra-clinique et d’améliorer le contrôle local. Depuis plus de 20 ans, des milliers de malades ont été inclus ... [more ▼]

Le traitement adjuvant des cancers du rectum a pour buts de stériliser la maladie résiduelle infra-clinique et d’améliorer le contrôle local. Depuis plus de 20 ans, des milliers de malades ont été inclus dans des études randomisées, visant d’abord à mettre en évidence un gain de survie et une réduction des récidives loco-régionales, en relation avec la radiothérapie pré- ou postopératoire, combinée ou non à la chimiothérapie. Les conséquences en termes de qualité de vie de ces traitements ont pourtant été peu étudiées, et la tolérance fonctionnelle du néo-rectum et de l’appareil sphinctérien à la radiothérapie restent mal connues [1]. Les difficultés liées à l’étude des effets de l’irradiation sur les tissus normaux, ainsi que la variabilité inter-individuelle de la réponse à la radiothérapie, s’ajoutent et rendent le sujet plus complexe encore. Les radiothérapeutes adaptent leur technique afin de réduire autant que possible la dose administrée aux tissus normaux avoisinant la tumeur. Dans le cas de l’irradiation du petit bassin, c’est l’intestin grêle qui a longtemps été considéré comme la structure à risque de complications, alors que l’atteinte du sphincter anal était rarement mentionnée [2]. Malgré les répercussions importantes de la dysfonction ano-rectale sur la qualité de vie des malades, l’atteinte du sphincter anal par la radiothérapie est restée un aspect négligé du traitement adjuvant des cancers du petit bassin [3]. Cet article a pour but, à travers une revue de la littérature, de mettre en évidence les effets qualitatifs et quantitatifs de la radiothérapie sur la fonction du sphincter anal, ainsi que de proposer une modification de la technique actuelle d’irradiation des cancers du bas rectum. [less ▲]

Detailed reference viewed: 84 (2 ULg)
Full Text
Peer Reviewed
See detailRadiation therapy alone or combined surgery and radiation therapy in squamous-cell carcinoma of the penis?
Zouhair, A; COUCKE, Philippe ULg; Jeanneret, W et al

in European Journal of Cancer (2001), 37

Abstract To assess the prognostic factors and the outcome in patients with squamous-cell carcinoma of the penis, a retrospective review of 41 consecutive patients with non-metastatic invasive carcinoma of ... [more ▼]

Abstract To assess the prognostic factors and the outcome in patients with squamous-cell carcinoma of the penis, a retrospective review of 41 consecutive patients with non-metastatic invasive carcinoma of the penis, treated between 1962 and 1994, was performed. The median age was 59 years (range: 35±76 years). According to the International Union Against Cancer (UICC) 1997 classi®cation, there were 12 (29%) T1, 24 (59%) T2, 4 (10%) T3 and 1 TX (2%) tumours. The N-classi®cation was distributed as follows: 29 (71%) patients with N0, 8 (20%) with N1, 3 (7%) with N2 and 1 (2%) with N3. Forty-four per cent (n=18) of the patients underwent surgery: partial penectomy with (n=4) or without (n=12) lymph node dissection, or total penectomy with (n=1) or without (n=1) lymph node dissection. 23 patients were treated with radiation therapy alone, and all but 4 of the patients who were operated upon received postoperative radiation therapy (n=14). The median follow-up period was 70 months (range 20±331 months). In a median period of 12 months (range 5±139 months), 63% (n=26) of the patients relapsed (local in 18, locoregional in 2, regional in 3 and distant in 3). Local failure (stump in the operated patients, and the tumour bed in those treated with primary radiation therapy) was observed in 4 out of 16 (25%) patients treated with partial penectomy postoperative radiotherapy versus 14 out of 23 (61%) treated with primary radiotherapy (P=0.06). 15 (83%) out of 18 local failures were successfully salvaged with surgery. In all patients, 5- and 10-year survival rates were 57% (95% con®dence interval (CI), 41±73%) and 38% (95% CI, 21± 55%), respectively. The 5-year local and locoregional rates were 57% (95% CI, 41±73%) and 48% (95% CI, 32±64%), respectively. In patients treated with primary radiotherapy, 5- and 10-year probabilities of surviving with penis preservation were 36% (95% CI, 22±50%) and 18% (95% CI, 2±34%), respectively. In multivariate analyses, survival was signi®cantly in¯uenced by the N-classi®- cation, and surgery was the only independent factor predicting the locoregional control. We conclude that, in patients with squa- mous-cell carcinoma of the penis, local control is better in patients treated with surgery. However, there seems to be no di erence in terms of survival between patients treated by surgery and those treated by primary radiotherapy salvage surgery, with 39% having organ preservation. [less ▲]

Detailed reference viewed: 29 (1 ULg)
Full Text
See detailMicroscopic determination of the nature of MC, M2C, M7C3 (M6C) carbides in high speed steels.
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in Proceedings of the Annual Meeting of the SBM (société belge de microscopie), Probing the molecular level. (2001)

The present work shows the procedure used to determine the nature of carbides, while using Scanning Electron Microscopy and Energy Dispersive Spectroscopy with X-rays. Then we lay emphasis on optical ... [more ▼]

The present work shows the procedure used to determine the nature of carbides, while using Scanning Electron Microscopy and Energy Dispersive Spectroscopy with X-rays. Then we lay emphasis on optical characterization of carbides. Optical characterization of carbides appear to be the preliminary stage for the general assessment of carbides in HSS microstructure, the final stage of the scheme being the correlation between microstructure parameters (carbides and matrix) and mechanical properties of HSS hot rolling mills rolls. [less ▲]

Detailed reference viewed: 30 (5 ULg)
Full Text
Peer Reviewed
See detailVesical varices in a patient with portal hypertension.
Gaspar, Yves; Detry, Olivier ULg; de Leval, Jean ULg

in New England Journal of Medicine [=NEJM] (2001), 345(20), 1503-4

Detailed reference viewed: 49 (10 ULg)