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See detailPore structure evolution of highly ordered mesoporous silica CMI-1 during boiling water treatment: A multi-technique investigation
Léonard, Alexandre ULg; Blin, J. L.; Su, B. L.

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2004), 241(1-3), 87-93

The structural, textural and morphological evolution of calcined surfactant-free mesoporous molecular sieves treated in boiling water was investigated and explained by a three-step mechanism. The ... [more ▼]

The structural, textural and morphological evolution of calcined surfactant-free mesoporous molecular sieves treated in boiling water was investigated and explained by a three-step mechanism. The materials, prepared by a non-ionic surfactant [C16(EO)10] templating pathway, undergo a sharp decrease in surface area and pore size at the initial stage due to the partial hydrolysis of the silica walls. Then, the dissolution of the resulting branched (Si-O-)n chains attached to the internal surface of the pores results in a gain of surface area and pore size. Finally, the loss in surface area and the sharp increase in pore sizes is due to the destruction of the pore walls and thus of the materials. © 2004 Elsevier B.V. All rights reserved. [less ▲]

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See detailPalynology of the Jauf Formation from the Northeastern part of the Arabian Shield
Al-Ruwaili, M.; Breuer, P.; Higgs, K. et al

Conference (2004)

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See detailControl of vesicle fusion by a tyrosine phosphatase.
Huynh, Huong; Bottini, Nunzio; Williams, Scott et al

in Nature cell biology (2004), 6(9), 831-9

The tyrosine phosphatase PTP-MEG2 is targeted by its amino-terminal Sec14p homology domain to the membrane of secretory vesicles. There it regulates vesicle size by promoting homotypic vesicle fusion by a ... [more ▼]

The tyrosine phosphatase PTP-MEG2 is targeted by its amino-terminal Sec14p homology domain to the membrane of secretory vesicles. There it regulates vesicle size by promoting homotypic vesicle fusion by a mechanism that requires its catalytic activity. Here, we identify N-ethylmaleimide-sensitive factor (NSF), a key regulator of vesicle fusion, as a substrate for PTP-MEG2. PTP-MEG2 reduced the phosphotyrosine content of NSF and co-localized with NSF and syntaxin 6 in intact cells. Furthermore, endogenous PTP-MEG2 co-immunoprecipitated with endogenous NSF. Phosphorylation of NSF at Tyr 83, as well as an acidic substitution at the same site, increased its ATPase activity and prevented alphaSNAP binding. Conversely, expression of a Y83F mutant of NSF caused spontaneous fusion events. Our results suggest that the molecular mechanism by which PTP-MEG2 promotes secretory vesicle fusion involves the local release of NSF from a tyrosine-phosphorylated, inactive state. This represents a novel mechanism for localized regulation of NSF and the first demonstrated role for a protein tyrosine phosphatase in the regulated secretory pathway. [less ▲]

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See detailProcollagen III N-endopeptidase.
Colige, Alain ULg

in Barrett, Alan J; Rawlings, Neil D.; Woessner, Fred J. (Eds.) Handbook of proteolytic enzymes, 2nd Edition. - Volume 1 - (2004)

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See detailThe genus Biernatella Baliński, 1977 (Brachiopoda) from the late Frasnian of Belgium
Mottequin, Bernard ULg

in Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre (2004), 74 (supplément)

The genus Biernatella (Brachiopoda; Athyridida), characterized by the presence of a diplospiralium, is definitely recognized for the first time in the late Frasnian (Lower-Upper Palmatolepis rhenana Zones ... [more ▼]

The genus Biernatella (Brachiopoda; Athyridida), characterized by the presence of a diplospiralium, is definitely recognized for the first time in the late Frasnian (Lower-Upper Palmatolepis rhenana Zones) of the southern flank of the Dinant Synclinorium and of the Philippeville Anticlinorium (southern Belgium). A new species (B. abunda n. sp.) from the Neuville Formation (Dinant Synclinorium) is described. In the Philippeville Anticlinorium, B. abunda n. sp. occurs in the Neuville Formation and probably at the base of the Les Valisettes Formation but specifically unidentified specimens of Biernatella have also been collected near the top of this last formation. [less ▲]

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See detailMeasurement of selected halogenated contaminants in human serum and milk using GCxGC-IDTOFMS
Focant, Jean-François ULg; sjodin, Andreas; Turner, Wayman et al

in Organohalogen Compounds (2004)

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See detailLa forêt privée wallonne, sa gestion et ses propriétaires (1ère partie)
Colson, Vincent ULg; Puissant, T.; Hebert, Jacques ULg et al

in Silva Belgica (2004), 111(4), 20-25

Dans le cadre d'une étude financée par le Ministère de l'Agriculture et de la Ruralité pour la Région wallonne, une enquête a été réalisée auprès de propriétaires privés de bois et forêts situés en Région ... [more ▼]

Dans le cadre d'une étude financée par le Ministère de l'Agriculture et de la Ruralité pour la Région wallonne, une enquête a été réalisée auprès de propriétaires privés de bois et forêts situés en Région wallonne. Les objectifs de cette enquête étaient de : - compléter les informations fournies par l'Inventaire Permanent des Ressources Forestières de Wallonie en récoltant des informations sur le morcellement et la composition des propriétés forestières privées wallonnes ; - tenter de caractériser les conditions actuelles de gestion des propriétés forestières privées ; - identifier les besoins d’informations et la nature des différents problèmes rencontrés par les propriétaires dans la gestion de leur patrimoine. Les résultats de cette enquête seront présentés en deux parties. Le présent article qui correspond à la première partie expose tout d’abord la méthodologie de l’enquête. Il s’intéresse ensuite à la caractérisation des propriétés forestières privées de Wallonie, notamment au travers de l’étude du morcellement mais surtout en cherchant à identifier quelles sont les fonctions que les propriétaires associent à leur forêt. Quelques brèves conclusions sont enfin présentées. Le second article traitera quant à lui des résultat relatifs à la gestion de la forêt privée et aux principales préoccupations des propriétaires. [less ▲]

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See detailPerho Irmeli, Catalogue of Arabic Manuscripts. Codices Arabici Arthur Christenseniani
Bauden, Frédéric ULg

in Bulletin Critique des Annales Islamologiques (2004), 20

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See detailNature humaine et personne singulière : l'éternel débat de la psychologie
Richelle, Marc ULg

in Psychologica (2004)

The author continues here an electronic dialogue with Manuel Abreu, initiated on the occasion of two scientific events (Centenary of the French Psychological Society [2001] and an Homage to Paul Fraisse ... [more ▼]

The author continues here an electronic dialogue with Manuel Abreu, initiated on the occasion of two scientific events (Centenary of the French Psychological Society [2001] and an Homage to Paul Fraisse in the frame of a meeting of the Association of French Language Scientific Psychology [2002]) and a parallel drawn between the careers of Paul Fraisse and Joseph Nuttin. The author discusses various lines of rupture that keep impeding any unification in psychology, any conciliation between basic research and applications, between the search for general laws and the individual approach to the subject, between cognitivist reductionism and concern with pluridimensional integration of the person. Are we to put up with such incompatibilities , as derived from two distinct epistemologies, or look beyond for complementarities? The later seems to have been Manuel Abreu's choice in his research and his teaching. The debat is still open. [less ▲]

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See detailLe recours direct, une nouvelle étape ?
Wildemeersch, Jonathan ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2004), (6), 242-243

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See detailLe nimbe et le jurème
Brausch, Géraldine ULg

in Brausch, Géraldine; Delruelle, Edouard (Eds.) La droit sans la justice : Actes de la rencontre autour du 'Cap des tempêtes' de L. François (2004)

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See detailLocalizable effective theories, bootstrap and the parameters of hadron resonances
Semenov-Tyan-Shanskiy, Kirill ULg; Vereshagin, Alexander; Vereshagin, Vladimir

in AIP Conference Proceedings (2004), 717

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See detailInteraction of antimicrobial lipopeptides from Bacillus subtilis with lipid membranes
Deleu, Magali ULg; Paquot, Michel ULg; Olofsson, Gerd et al

Poster (2004)

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See detailPromotion des entrepreneurs ruraux en Asie du Sud-Est
Dogot, Thomas ULg; Duquesne, Brigitte ULg; Pham Van Bien et al

in Colloque international AIEA2 et Ateliers de la SCAE (Association internationale d’économie alimentaire et agro-industrielle, Société canadienne d’agroéconomie) : actes du colloque (2004)

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See detailBack to Earth - Ballads and (Bio)diversity
Peere, Isabelle ULg

in B.A.S.I.S Ballads and Songs International Studies (2004)

Introduction à une collection de 27 contributions

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