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See detailPensions and savings in a monetary union: an analysis of capital flows
Jousten, Alain ULg; Legros, F.

in Artus, P.; Legros, F. (Eds.) Currency Areas in Financial Globalization (2005)

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See detailPensions publiques et épargne privée. L'exemple belge.
Pestieau, Pierre ULg; Perelman, Sergio ULg

in Revue Economique (1980), (31), 1178-1188

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See detailPensions with endogenous and stochastic fertility
Cremer, Helmuth; Gahvari, Firouz; Pestieau, Pierre ULg

in Journal of Public Economics (2006), 90(12), 2303-2321

This paper studies the design of a pay-as-you-go social security system in an overlapping generations model where fertility is in part stochastic and in part determined through capital investment. If ... [more ▼]

This paper studies the design of a pay-as-you-go social security system in an overlapping generations model where fertility is in part stochastic and in part determined through capital investment. If investments are publicly observable, pension benefits must be linked positively to the level of investment, and payroll taxes negatively to the number of children. The outcome is characterized by full insurance with all parents, regardless of their number of children, enjoying identical consumption levels. Without observability, benefits must increase, and payroll taxes decrease, with the number of children. The second-best level of investment, and the resulting average fertility rate, are less than their corresponding first-best levels. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

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See detailPensions with heterogenous individuals and endogenous fertility
Cremer, Helmuth; Gahvari, Firouz; Pestieau, Pierre ULg

in Journal of Population Economics (2006), (21), 961-981

This paper studies the design of pension schemes in a society where fertility is endogenous and parents differ in their ability to raise children. In a world with perfect information, a pay-as-you-go ... [more ▼]

This paper studies the design of pension schemes in a society where fertility is endogenous and parents differ in their ability to raise children. In a world with perfect information, a pay-as-you-go social security system is characterized by equal pensions for all but different contributions which may or may not increase with the number of children. Additionally, fertility must be subsidized at the margin to correct for the externality that accompanies fertility. In a world of asymmetric information, incentiverelated distortions supplement the Pigouvian subsidy. These may either require an additional subsidy or an offsetting tax on fertility depending on whether the redistribution is towards people with more or less children. In the former case, pensions are decreasing in the number of children; in the latter case, they are increasing. [less ▲]

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See detailLe Pentathlon en équipe dans un contexte éducatif belge francophone : étude de cas
Cloes, Marc ULg; Dominique, Aurélien; Martel, Denis

Conference (2012, May 25)

Directement intégrés à la communauté de vie, l’école et le cours d’éducation physique, sont identifiés comme des piliers de la promotion de l’activité physique chez les plus jeunes. Parmi les programmes ... [more ▼]

Directement intégrés à la communauté de vie, l’école et le cours d’éducation physique, sont identifiés comme des piliers de la promotion de l’activité physique chez les plus jeunes. Parmi les programmes qui ont été élaborés pour répondre à cette mission, le Pentathlon en équipe a démontré son efficacité au Québec. L’objectif de cette recherche consistait à l’implanter en région liégeoise afin de déterminer dans quelle mesure il présente les mêmes qualités dans un contexte culturel et éducatif différent. Une enseignante en EPS expérimentée a ainsi accepté de proposer le Pentathlon en équipe à deux de ses classes de dernière année de l’enseignement secondaire général (43 filles de 17 à 18 ans), de janvier à mars 2011 (8 semaines d’activité). Les modalités de la version québécoises ont été appliquées avec certains aménagements au niveau de la liste des disciplines sportives prises en considération. Les activités Pentathlon des élèves ont été relevées en respectant le modèle du programme original. Des questionnaires, des entretiens et des observations (interventions de l’enseignante) ont complété la collecte des données qui ne seront toutefois pas exploitées dans cette présentation. Convaincue de la nécessité de rechercher des pistes pour amener ses élèves à adopter un style de vie plus actif, l’enseignante s’est totalement impliquée dans le projet. La majorité des élèves (60%) ont réellement été mobilisées par celui-ci. Le nombre moyen d’Heures Pentathlon augmente régulièrement du début à la fin du cycle. Comme cela est confirmé par les avis des élèves, cette évolution semble directement liée aux interventions de l’enseignante. L’analyse des caractéristiques des activités pratiquées souligne que les élèves ont privilégié une augmentation de la fréquence et de la diversité des sports plutôt que de jouer sur l’intensité de leurs activités. Notons aussi que 37% des filles se sont engagées dans de nouvelles activités. [less ▲]

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See detailPEO coated magnetic nanoparticles for biomedical application
Aqil, Abdelhafid ULg; Vasseur, S.; Duguet, E. et al

in European Polymer Journal (2008), 44(10), 3191-3199

This paper reports on the preparation, characterization and stealthiness of superparamagnetic nanoparticles (magnetite Fe3O4) with a 5 nm diameter and stabilized in water (pH 6.5) by a shell of water ... [more ▼]

This paper reports on the preparation, characterization and stealthiness of superparamagnetic nanoparticles (magnetite Fe3O4) with a 5 nm diameter and stabilized in water (pH 6.5) by a shell of water-soluble poly(ethylene oxide) (PEO) chains. Two types of diblock copolymers, i.e., poly(acrylic acid)-b-poly(ethylene oxide), PAA–PEO, and poly(acrylic acid)-b-poly(acrylate methoxy poly(ethyleneoxide)), PAA–PAMPEO, were prepared as stabilizers with different compositions and molecular weights. At pH 6.5, the negatively ionized PAA block interacts strongly with the positively-charged nanoparticles, thus playing the role of an anchoring block. Aggregates of coated nanoparticles were actually observed by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The hydrodynamic diameter was in the 50–100 nm range and the aggregation number (number of nanoparticles per aggregate) was lying between several tens and hundred. Moreover, the stealthiness of these aggregates was assessed “in vitro” by the hemolytic CH50 test. No response of the complement system was observed, such that biomedical applications can be envisioned for these magnetic nanoparticles. Preliminary experiments of magnetic heating (10 kA/m; 108 kHz) were performed and specific absorption rate varied from 2 to 13 W/g(Fe). [less ▲]

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See detailThe People’s Republic of China : sociopolitical landscape on the eve of the 18th Party congress
Florence, Eric ULg

Conference given outside the academic context (2012)

In this presentation, the key features of the Mao-era legacies will firstly be introduced to the public. One will highlight how these socialist institutions still contribute to define a system which has ... [more ▼]

In this presentation, the key features of the Mao-era legacies will firstly be introduced to the public. One will highlight how these socialist institutions still contribute to define a system which has been defined by Lee Ching-Kwan as “Decentralized legal authoritarianism”. In a second section, the modalities of state-society relations in 21st century China will be presented in a dynamic way. How can one define these various modalities? How is the Party adapting its ideological system to a rapidly changing society and to socioeconomic transformation? What are the major challenges facing the Chinese government as one witnesses mounting collective mobilization and contentious politics? These are some of the questions which will be explored within this presentation. [less ▲]

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See detailThe Pepinster formation in the Verviers synclinorium, between Pepinster and Eupen (Belgium). Structural and stratigraphical context
Hance, Luc ULg; Dejonghe, L; Fairon-Demaret, Muriel ULg et al

in Annales de la Société Géologique de Belgique (1994), 117

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See detailPepLook Scale-Up Prediction of protein structures
Crowet, Jean-Marc ULg; Lins, Laurence ULg; Brasseur, Robert ULg

Poster (2009, August 27)

Besides experimental approaches for peptide structures determination which results often differ with assay conditions, there is, to our knowledge, only three in silico methods available for the prediction ... [more ▼]

Besides experimental approaches for peptide structures determination which results often differ with assay conditions, there is, to our knowledge, only three in silico methods available for the prediction of peptide structures: Pepstruct, Rosetta and PepLook. The latter was developed by the CBMN (1, 2) based on the fact that any protein PDB model can be re-constructed in silico using a restricted subset of φψ couples of angles (3). As PepLook was able to predict conformation of peptides and protein fragments, like cell penetrating peptides (CPPs) (1) and the hydrophobic segment of DGKє (4) with good accuracy, we are testing whether PepLook could be used for the prediction of complete protein structures. To reach this goal, PepLook is used to predict the conformation of peptidic fragments along the protein sequences. The sequence is scanned with different sizes of windows shifted along the sequence from the first to the last residue. For each sequence window, the 99 PepLook models of structure are analysed and compared to the PDB model. PepLook scans are running for five proteins, α-synuclein (1XQ8), a Zinc endoprotease (1C7K), Ubiquitin (1UBQ), Cytochrome b562 (256B) and Lysozyme (3LZT, 1AM7), using different window lengths (7, 9, 11, 15, 17, 21, 23 and 27 residues) by sliding steps of 1 residue. Since this approach requires huge calculation time, we present here the preliminary results. [less ▲]

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See detailPepLook Scale-Up: Prediction of protein structures
Crowet, Jean-Marc ULg; Brasseur, Robert ULg; Lins, Laurence ULg

Conference (2009, January 27)

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See detailPepLook: An innovative in silico tool for determination of structure, polymorphism and stability of peptides
Thomas, Annick ULg; Deshayes, Sebastien; Decaffmeyer, Marc et al

in Advances in Experimental Medicine and Biology (2009), 611

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See detailPepsinogen and progesterone concentration during pregnancy in sows.
Banga-Mboko, H.; Thilman, P.; Desbuleux, H. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 12-13

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See detailPeptidase Activity of Beta-Lactamases
Rhazi, Noureddine ULg; Galleni, Moreno ULg; Page, Michael I. et al

in Biochemical Journal (1999), 341((Pt 2)), 409-13

Although beta-lactamases have generally been considered as being devoid of peptidase activity, a low but significant hydrolysis of various N-acylated dipeptides was observed with representatives of each ... [more ▼]

Although beta-lactamases have generally been considered as being devoid of peptidase activity, a low but significant hydrolysis of various N-acylated dipeptides was observed with representatives of each class of beta-lactamases. The kcat/Km values were below 0.1 M(-1). s(-1), but the enzyme rate enhancement factors were in the range 5000-20000 for the best substrates. Not unexpectedly, the best 'peptidase' was the class C beta-lactamase of Enterobacter cloacae P99, but, more surprisingly, the activity was always higher with the phenylacetyl- and benzoyl-d-Ala-d-Ala dipeptides than with the diacetyl- and alpha-acetyl-l-Lys-d-Ala-d-Ala tripeptides, which are the preferred substrates of the low-molecular-mass, soluble dd-peptidases. A comparison between the beta-lactamases and dd-peptidases showed that it might be as difficult for a dd-peptidase to open the beta-lactam ring as it is for the beta-lactamases to hydrolyse the peptides, an observation which can be explained by geometric and stereoelectronic considerations. [less ▲]

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See detailPeptide backbone fragmentation initiated by side-chain loss at cysteine residue in matrixassisted laser desorption/ionization in-source decay mass spectrometry
Asakawa, Daiki; Smargiasso, Nicolas ULg; Quinton, Loïc ULg et al

in Journal of Mass Spectrometry [=JMS] (2013), 48

Matrix-assisted laser desorption/ionization in-source decay (MALDI-ISD) is initiated by hydrogen transfer from matrix molecules to the carbonyl oxygen of peptide backbone with subsequent radical-induced ... [more ▼]

Matrix-assisted laser desorption/ionization in-source decay (MALDI-ISD) is initiated by hydrogen transfer from matrix molecules to the carbonyl oxygen of peptide backbone with subsequent radical-induced cleavage leading to c0/z• fragments pair. MALDI-ISD is a very powerful method to obtain long sequence tags from proteins or to do de novo sequencing of peptides. Besides classical fragmentation, MALDI-ISD also shows specific fragments for which the mechanism of formation enlightened the MALDI-ISD process. In this study, the MALDI-ISD mechanism is reviewed, and a specific mechanism is studied in details: the N-terminal side of Cys residue (Xxx-Cys) is described to promote the generation of c0 and w fragments in MALDI-ISD. Our data suggest that for sequences containing Xxx-Cys motifs, the N–Ca bond cleavage occurs following the hydrogen attachment to the thiol group of Cys side-chain. The c•/w fragments pair is formed by side-chain loss of the Cys residue with subsequent radical-induced cleavage at the N–Ca bond located at the left side (N-terminal direction) of the Cys residue. This fragmentation pathway preferentially occurs at free Cys residue and is suppressedwhen the cysteines are involved in disulfide bonds. Hydrogen attachment to alkylated Cys residues using iodoacetamide gives free Cys residue by the loss of •CH2CONH2 radical. The presence of alkylated Cys residue also suppress the formation of c•/w fragments pair via the (Cb)-centered radical, whereas w fragment is still observed as intense signal. In this case, the z• fragment formed by hydrogen attachment of carbonyl oxygen followed side-chain loss at alkylated Cys leads to a w fragment. Hydrogen attachment on peptide backbone and side-chain of Cys residue occurs therefore competitively during MALDI-ISD process. [less ▲]

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See detailPEPTIDE CLICK LABELLING WITH 1-(AZIDOMETHYL)-4-[18F]-FLUOROBENZENE AND REFERENCE COMPOUNDS SYNTHESIS ON SOLID SUPPORT
Thonon, David ULg; Paris, Jérôme ULg; Kech, Cecile et al

in Journal of Labelled Compounds and Radiopharmaceuticals (2009, July)

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See detailPeptide cross-links in bacterial cell wall peptidoglycans studied with specific endopeptidases from Streptomyces albus G
Petit, Jean-François; Munoz, Emilio; Ghuysen, Jean-Marie ULg

in Biochemistry (1966), 5(8), 2764-2776

Detailed reference viewed: 5 (0 ULg)