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See detailNew advances in asteroseismology of pulsating hot subdwarf stars
Charpinet, S.; Van Grootel, Valérie ULg; Randall, S. K. et al

in Highlights of Astronomy (2010, November 01), 15

Hot subdwarf stars (of the sdB and sdO type) host three known classes of nonradial pulsators. Two of them feature short period (P ~ 60 - 600 s) accoustic mode oscillations, while the third group is ... [more ▼]

Hot subdwarf stars (of the sdB and sdO type) host three known classes of nonradial pulsators. Two of them feature short period (P ~ 60 - 600 s) accoustic mode oscillations, while the third group is characterized by slow g-mode deformations with periods of ~ 1 - 2h. These pulsations offer favorable grounds to infer some of the internal properties of these objects through asteroseismology. This has been exploited for the rapid p-mode sdB pulsators and the present contribution reviews some of the recent advances in this field. The long period g-mode pulsators, whose vibrations probe much deeper inside the star, are also of high interest. With the advent of space observations using CoRoT and KEPLER, the asteroseismology of these slower oscillators will also become a possibility, and likely contribute to significant breakthroughs in our understanding of these hot and compact stars. [less ▲]

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See detailNew advances in method validation and measurement uncertainty aimed at improving the quality of chemical data
Feinberg, M.; Boulanger, Bruno ULg; Dewé, Walthère ULg et al

in Analytical and Bioanalytical Chemistry (2004), 380(3), 502-514

The implementation of quality systems in analytical laboratories has now, in general, been achieved. While this requirement significantly modified the way that the laboratories were run, it has also ... [more ▼]

The implementation of quality systems in analytical laboratories has now, in general, been achieved. While this requirement significantly modified the way that the laboratories were run, it has also improved the quality of the results. The key idea is to use analytical procedures which produce results that fulfil the users' needs and actually help when making decisions. This paper presents the implications of quality systems on the conception and development of an analytical procedure. It introduces the concept of the life-cycle of a method as a model that can be used to organize the selection, development, validation and routine application of a method. It underlines the importance of method validation, and presents a recent approach based on the accuracy profile to illustrate how validation must be fully integrated into the basic design of the method. Thanks to the beta-expectation tolerance interval introduced by Mee (Technometrics (1984) 26(3):251-253), it is possible to unambiguously demonstrate the fitness for purpose of a new method. Remembering that it is also a requirement for accredited laboratories to express the measurement uncertainty, the authors show that uncertainty can be easily related to the trueness and precision of the data collected when building the method accuracy profile. [less ▲]

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See detailNew Advances in the Understanding of the In-Source Decay Fragmentation of Peptides in MALDI-TOF-MS.
Demeure, Kevin ULg; Gabelica, Valérie ULg; De Pauw, Edwin ULg

in Journal of the American Society for Mass Spectrometry (2010), 21(11), 1906-17

In-source decay (ISD) is a rapid fragmentation occurring in the matrix-assisted laser desorption/ionization (MALDI) source before the ion extraction. Despite the increasing interest for peptides de novo ... [more ▼]

In-source decay (ISD) is a rapid fragmentation occurring in the matrix-assisted laser desorption/ionization (MALDI) source before the ion extraction. Despite the increasing interest for peptides de novo sequencing by ISD, the influence of the matrix and of the peptide itself is not yet fully understood. Here we compare matrices with high ISD efficiencies to gain deeper insight in the ISD fragmentation process(es). The major ISD fragments are the c- and z-ions, but other types of fragments are also observed, and their origin is studied here. Two main pathways lead to fragmentation in the source: a radical-induced pathway that leads to c-, z-, w-, and d-ions, and a thermally activated pathway that leads to y-, b-, and a-ions. A detailed analysis of the ISD spectra of selected peptides revealed that (1) the extents of the two in-source pathways are differently favored depending on the matrix used, that (2) the presence of a positive/negative charge on the radical-induced fragments is necessary for their observation in positive/negative mode, respectively, and that (3), for a same peptide, the patterns of the different types of fragments differ according to the matrix used. [less ▲]

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See detailNew advances on the phylogeography and molecular systematics of the Eurasian rodents2013
Michaux, Johan ULg

in Abstract book of the 13th Rodens & Spatium conference (2013)

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See detailNew alginate-chitosan hydrogel beads with anti-inflammatory and anabolic effects on human chondrocytes
Oprenyeszk, Frédéric ULg; Mathy, Marianne ULg; Sanchez, Christelle ULg et al

in Osteoarthritis and Cartilage (2011), 19(Suppl 1), 222

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See detailNew alginate-chitosan hydrogel beads with anti-inflammatory and anabolic effects on human chondrocytes
Oprenyeszk, Frédéric ULg; Sanchez, Christelle ULg; Dubuc, Jean-Emile et al

in Arthritis and Rheumatism (2011), 63(10), 697

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See detailNew algorithm concept for a model of mixed lubrication in cold rolling
STEPHANY, A.; Ponthot, Jean-Philippe ULg; COLLETTE, C. et al

in Proceedings of METEC 2003, European Rolling Conference (2003)

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See detailNew alkoxypyridine Sulfonamides: Synthesis, Biological Evaluation and Physicochemical Properties
Liégeois, Jean-François ULg; Dive, Georges ULg; Dupont, Léon et al

in Helvetica Chimica Acta (1991), 74(8), 1764-1772

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See detailNew alternatives to chemical pesticides: deciphering the action mechanisms of lipid based plant elicitors via complementary biophysical and biological approaches.
Nasir, Mehmet Nail ULg; Polo Lozano, Damien ULg; Luzuriaga Loaiza, Walter ULg et al

Poster (2014, February)

Nowadays, many health and environmental problems are caused by the use of chemical pesticides. In this context, an increasing demand for alternative products such as biopesticides has been observed. Among ... [more ▼]

Nowadays, many health and environmental problems are caused by the use of chemical pesticides. In this context, an increasing demand for alternative products such as biopesticides has been observed. Among biopesticides, elicitor molecules which are able to trigger immune defense responses in plants are one of the most promising options. Although numerous elicitors have been discovered, the mechanisms involved in the perception, by plants, of only a few molecules have been identified. These elicitors usually interact with proteic receptors but we have recently shown that they may also act on the lipid phase of the plasma membrane. This project first aims to improve our understanding of the molecular mechanisms involved in the recognition of specific lipid based elicitors (LBE). On that basis, the FIELD project will contribute to the design and the development of innovative compounds derived natural LBE. A multi-disciplinary approach, based on chemistry, bio-physics, bio-chemistry, and phytopathology will be followed by a consortium of different research groups from Gembloux Agro-Bio Tech in close collaboration with teams from foreign institutions. [less ▲]

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See detailNew Amphiphilic Neamine Derivatives Active against Resistant Pseudomonas aeruginosa and Their Interactions with Lipopolysaccharides
Sautrey, Guillaume; Zimmerman, Louis; Deleu, Magali ULg et al

in Antimicrobial Agents and Chemotherapy (2014), 58(8), 4420-4430

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See detailNew analogues of the KATP channel opener cromakalim : synthesis and pharmacological evaluation on rat pancreatic B-cells and rat aorta rings
Sebille, S.; De Tullio, Pascal ULg; Antoine, M. H. et al

in Fundamental & Clinical Pharmacology (2004)

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See detailNew analogues of the potassium channel opener cromakalim : effects on rat pancreatic B-cells and rat aorta rings
Sebille, S.; De Tullio, Pascal ULg; Antoine, M. H. et al

Poster (2004, July)

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See detailNew analogues of the potassium channel opener cromakalim: effects on rat pancreatic B-cells and rat aorta rings
Sebille, S.; De Tullio, Pascal ULg; Antoine, M. H. et al

Conference (2004, May)

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See detailA new analysis of quasar polarization alignments
Pelgrims, Vincent ULg; Cudell, Jean-René ULg

in Monthly Notices of the Royal Astronomical Society (2014), 442(1), 1239-1248

We propose a new method to analyse the alignment of optical polarization vectors from quasars. This method leads to a definition of intrinsic preferred axes and to a determination of the probability that ... [more ▼]

We propose a new method to analyse the alignment of optical polarization vectors from quasars. This method leads to a definition of intrinsic preferred axes and to a determination of the probability that the distribution of polarization directions is random. This probability is found to be as low as 0,003 percent for one of the region of redshift. [less ▲]

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See detailA new analysis of the OH radical spectrum from solar infrared observations.
Mélen, F.; Sauval, A. J.; Grevesse, Nicolas ULg et al

in Journal of Molecular Spectroscopy (1995), 174

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See detailA new analysis of the OH radical spectrum from solar Infrared observations.
Mélen, F.; Grevesse, Nicolas ULg; Delbouille, L. et al

in ASP Conference Series (1995)

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See detailA new analysis of the optical polarisation alignments of quasars
Pelgrims, Vincent ULg

Poster (2014, April 30)

Introduction of a new statistical method dedicated to the analysis of polarisation orientations and presentation of some results of its application to the sample of optical polarisation measurements of ... [more ▼]

Introduction of a new statistical method dedicated to the analysis of polarisation orientations and presentation of some results of its application to the sample of optical polarisation measurements of 355 quasars. [less ▲]

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See detailNew analytic unitarization schemes
Cudell, Jean-René ULg; Predazzi, E.; Selyugin, O. V.

in Physical Review. D : Particles and Fields (2009), 79

We consider two well-known classes of unitarization of Born amplitudes of hadron elastic scattering. The standard class, which saturates at the black disk limit includes the standard eikonal ... [more ▼]

We consider two well-known classes of unitarization of Born amplitudes of hadron elastic scattering. The standard class, which saturates at the black disk limit includes the standard eikonal representation, while the other class, which goes beyond the black-disk limit to reach the full unitarity circle, includes the U matrix. It is shown that the basic properties of these schemes are independent of the functional form used for the unitarisation, and that U matrix and eikonal schemes can be extended to have similar properties. A common form of unitarisation is proposed interpolating between both classes. The correspondence with different nonlinear equations are also briefly examined. [less ▲]

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