Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailLes multiples interactions entre la gestion de la biodiversité et de l'eau
Dufrêne, Marc ULg

Conference given outside the academic context (2014)

Detailed reference viewed: 44 (12 ULg)
Full Text
See detailLes multiplets atomiques dans les spectres stellaires
Swings, Polydore ULg; Donnays, L.

in Association Française pour l'Avancement des Sciences (Ed.) Compte-rendu de la 57e session, Chambéry 1933 (1933)

Detailed reference viewed: 6 (3 ULg)
Full Text
Peer Reviewed
See detailMultiplex PCRs for Identification of Necrotoxigenic Escherichia coli
Van Bost, S.; Jacquemin, E.; Oswald, E. et al

in Journal of Clinical Microbiology (2003), 41(9), 4480-4482

Two multiplex PCRs were developed for the detection of necrotoxigenic Escherichia coli virulence genes. M1 contained the primers for the toxins and the aerobactin, and M2 contained the primers for the ... [more ▼]

Two multiplex PCRs were developed for the detection of necrotoxigenic Escherichia coli virulence genes. M1 contained the primers for the toxins and the aerobactin, and M2 contained the primers for the adhesins. They were validated by single PCRs performed with reference E. coli strains and by multiplex PCRs with necrotoxigenic E. coli strains isolated from different animal species. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
See detailMultiplication by a Constant and Recognizability in an Abstract Numeration System
Charlier, Emilie ULg

Poster (2005, September 12)

One of the main interesting concerns in work about numeration systems is studying the relationship that exist between arithmetic properties of numbers and syntactical properties of their representation ... [more ▼]

One of the main interesting concerns in work about numeration systems is studying the relationship that exist between arithmetic properties of numbers and syntactical properties of their representation. More precisely, we prefer to manipulate set of numbers whose representations are characterized by very simple syntactical rules, that is, forming a regular language. Such sets are called S-recognizable sets, where S is the numeration system we are working with. In particular, we would like to obtain numeration systems in which the whole set N is recognizable, partly due to the fact that, if the set of representations of all integers is regular, there are very simple algorithms making it possible to decide if a word stands or does not stand for a number. Some general questions in this area are the following. • Characterization of the recognizable parts in a fixed numeration system. • Determination of the numeration systems for which a given set of numbers is recognizable. • To examine the stability of recognizability under arithmetic operations. In this poster we present our research about that last problem. First, we will define the abstract numeration systems based on a regular language. Then we will study the relationship between multiplication by a constant and the S-recognizability for languages of the type a_1^∗ . . . a_k^∗. [less ▲]

Detailed reference viewed: 13 (2 ULg)
Full Text
See detailMultiplication des embryons chez les bovins: possibilités actuelles et futures
Ectors, Francis ULg; Beckers, Jean-François ULg; Ectors, Fabien ULg et al

in Biotechnologie en Sélection animale - IRSIA (1989)

Since several years, research efforts have been focused towards improving the reproductive potential of domestic animals. The authors present a review of different technics in particular the ... [more ▼]

Since several years, research efforts have been focused towards improving the reproductive potential of domestic animals. The authors present a review of different technics in particular the superovulation and priming, embryo micromanipulation and clonage. The technic of superovulation allows an increase of the total number fo the offspring by an increase of the ovocytes total number. Different FSH injections at the end of the cycle, preceded by small FSH quantity at the beginning of the cycle, procure a great number of mature follicles available for reproduction. Micromanipulation allows a multiplicaton by sectioning the embryo in two or more segments. Isolated blastmeres can also be used but it was observed that those cells very rapidly loose their differentiation potential. Clonage allows the reproduction of an animal from only one of his own cells. The nucleus of this cell is extracted and reimplanted in an enucleated ovocyte. Meanwhile from a practical point of vue, this technic is, at present, only possible using a stem cell and not using a mature somatic cell. [less ▲]

Detailed reference viewed: 86 (2 ULg)
Full Text
Peer Reviewed
See detailMultiplication of an ancestral gene encoding secreted fungalysin preceded species differentiation in the dermatophytes Trichophyton and Microsporum
Jousson, O.; Lechenne, B.; Bontems, O. et al

in Microbiology-Sgm (2004), 150(Part 2), 301-310

Dermatophytes are human and animal pathogenic fungi which cause cutaneous infections and grow exclusively in the stratum corneum, nails and hair. In a culture medium containing soy proteins as sole ... [more ▼]

Dermatophytes are human and animal pathogenic fungi which cause cutaneous infections and grow exclusively in the stratum corneum, nails and hair. In a culture medium containing soy proteins as sole nitrogen source a substantial proteolytic activity was secreted by Trichophyton rubrum, Trichophyton mentagrophytes and Microsporum canis. This proteolytic activity was 55-75% inhibited by o-phenanthroline, attesting that metalloproteases were secreted by all three species. Using a consensus probe constructed on previously characterized genes encoding metalloproteases (MEP) of the M36 fungalysin family in Aspergillus fumigatus, Aspergillus oryzae and M. canis, a five-member MEP family was isolated from genomic libraries of T rubrum, T mentagrophytes and M. canis. A phylogenetic analysis of genomic and protein sequences revealed a robust tree consisting of five main clades, each of them including a MEP sequence type from each dermatophyte species. Each MEP type was remarkably conserved across species (72-97% amino acid sequence identity). The tree topology clearly indicated that the multiplication of MEP genes in dermatophytes occurred prior to species divergence. In culture medium containing soy proteins as a sole nitrogen source secreted Meps accounted for 19-36% of total secreted protein extracts; characterization of protein bands by proteolysis and mass spectrometry revealed that the three dermatophyte species secreted two Meps (Mep3 and Mep4) encoded by orthologous genes. [less ▲]

Detailed reference viewed: 33 (3 ULg)
Full Text
See detailMultiplicités des procédures et faible participation ?,
Hanson, Sophie; Michel, Quentin ULg

in Cahiers de l'Urbanisme (Les) (2003), (Hors série), 21

Detailed reference viewed: 10 (5 ULg)
Full Text
Peer Reviewed
See detailMultiplicity and complexity issues in contemporary production scheduling
Brauner, Nadia; Crama, Yves ULg; Grigoriev, Alexander et al

in Statistica Neerlandica (2007), 61(1), 75-91

High multiplicity scheduling problems arise naturally in contemporary production settings where manufacturers combine economies of scale with high product variety. Despite their frequent occurrence in ... [more ▼]

High multiplicity scheduling problems arise naturally in contemporary production settings where manufacturers combine economies of scale with high product variety. Despite their frequent occurrence in practice, the complexity of high multiplicity problems - as opposed to classical, single multiplicity problems - is in many cases not well understood. In this paper, we discuss various concepts and results that enable a better understanding of the nature and complexity of high multiplicity scheduling problems. The paper extends the framework presented in Brauner et al. [Journal of Combinatorial Optimization (2005) Vol. 9, pp. 313-323] for single machine, non-preemptive high multiplicity scheduling problems, to more general classes of problems. [less ▲]

Detailed reference viewed: 60 (3 ULg)
Peer Reviewed
See detailMultiplicity of cytochrome P450 dependent steroid 16alpha-hydroxylase in the rat liver.
Kremers, Pierre ULg; Pasleau, Françoise ULg; Gielen, Jacques

Conference (1978, June)

Detailed reference viewed: 14 (3 ULg)
Full Text
See detailMultiplicity of O-type stars in NGC 2244
Mahy, Laurent ULg; Nazé, Yaël ULg; Rauw, Grégor ULg et al

Poster (2008)

We present the main results from our long‐term spectroscopic campaign devoted to the O‐type stars in the young open cluster NGC 2244. Previous works by our team on the O‐stars multiplicity in other young ... [more ▼]

We present the main results from our long‐term spectroscopic campaign devoted to the O‐type stars in the young open cluster NGC 2244. Previous works by our team on the O‐stars multiplicity in other young open clusters (IC 1805 and NGC 6231) showed that the number of binary systems in such clusters was larger than 40%. Until now, only two stars (HD 47129 and HD 48099) in the surroundings of NGC 2244 have been confirmed as spectroscopic binaries (SB) although Garcia & Mermilliod (2001) estimated the O‐type binary fraction at 50%. In this context, we revisited the spectral classification, the projected rotational velocity and the multiplicity of O‐type stars in NGC 2244. [less ▲]

Detailed reference viewed: 11 (5 ULg)
Full Text
Peer Reviewed
See detailThe multiplicity of O-type stars in NGC 2244
Mahy, Laurent ULg; Rauw, Grégor ULg; Martins, F. et al

in Bulletin de la Societe Royale des Sciences de Liege (2011), 80

The investigation of the multiplicity of massive stars is crucial to determine a robust binary fraction but also for understanding the physical properties of these objects. In this contribution, we will ... [more ▼]

The investigation of the multiplicity of massive stars is crucial to determine a robust binary fraction but also for understanding the physical properties of these objects. In this contribution, we will present the main results from our long-term spectroscopic survey devoted to the young open cluster NGC 2244. We discuss the spectral classification, the projected rotational velocity (v sin{i}) and the multiplicity of O-stars. The stellar and wind parameters of each star, obtained using the CMFGEN atmosphere code, help us to better constrain the individual properties of these objects. Several of these stars were observed by the CoRoT satellite (SRa02) in the Asteroseismology channel. This intensive monitoring and the unprecedented quality of the light curves allow us to shed a new light on these objects. [less ▲]

Detailed reference viewed: 19 (2 ULg)
Full Text
Peer Reviewed
See detailMultiplier l’acquisition de bases de données bibliographiques pour enrichir la recherche documentaire : mythe ou réalité ?
Decoster, Sara ULg; Simon, Stéphanie ULg; Van Ruymbeke, Muriel ULg

in Cahiers de la Documentation = Bladen voor Documentatie (2013), 67(2), 28-40

Cet article propose une analyse approfondie de quatre bases de données bibliographiques sous abonnement disponibles à l’Université de Liège, sur deux plateformes différentes, dans le domaine des études ... [more ▼]

Cet article propose une analyse approfondie de quatre bases de données bibliographiques sous abonnement disponibles à l’Université de Liège, sur deux plateformes différentes, dans le domaine des études linguistiques et littéraires. Les outils concernés offrent une couverture générale du domaine, au sens où ils ne sont pas spécialisés dans une période chronologique ou une langue particulière. Les quatre bases de données analysées sont MLA International Bibliography et Communication & Mass Media Complete (CMMC), accessibles via Ebsco, ainsi que Francis et Linguistics and Language Behavior Abstracts (LLBA) sur la plateforme ProQuest. L’objectif de l’article est d’évaluer le bénéfice que l’utilisateur peut tirer de ces produits. Afin d’y parvenir, l’analyse suit des axes centrés sur le contenu et la complémentarité des ressources ainsi que sur les fonctionnalités proposées. Les résultats de ce travail peuvent alimenter une réflexion sur l’évolution de la bibliothéconomie et sa place dans le monde de la recherche et de l’enseignement. [less ▲]

Detailed reference viewed: 62 (27 ULg)
Peer Reviewed
See detailMultipole Transitions in Nicke-like and Palladium-like Spectra
Biémont, Emile ULg

in Journal of Physics : B Atomic Molecular & Optical Physics (1997), 30

Detailed reference viewed: 4 (1 ULg)
Full Text
Peer Reviewed
See detailA Multipotential Beta -1,6-N-Acetylglucosaminyl-Transferase Is Encoded by Bovine Herpesvirus Type 4
Vanderplasschen, Alain ULg; Markine-Goriaynoff, N.; Lomonte, P. et al

in Proceedings of the National Academy of Sciences of the United States of America (2000), 97(11), 5756-5761

The beta-1,6-N-acetylglucosaminyltransferase (beta1,6GnT) gene family encodes enzymes playing crucial roles in glycan synthesis. Important changes in beta1,6GnT expression are observed during development ... [more ▼]

The beta-1,6-N-acetylglucosaminyltransferase (beta1,6GnT) gene family encodes enzymes playing crucial roles in glycan synthesis. Important changes in beta1,6GnT expression are observed during development, oncogenesis, and immunodeficiency. The most characterized beta1,6GnTs in this gene family are the human (h) C2GnT-L and h-IGnT, which have core 2 [Galbeta1-->3(GlcNAcbeta1-->6)GalNAc] and I branching [GlcNAcbeta1-->3(GlcNAcbeta1-->6)Gal] activities, respectively. Recently, h-C2GnT-M was shown to be unique in forming core 2, core 4 [GlcNAcbeta1-->3(GlcNAcbeta1-->6)GalNAc], and I structures. To date, the beta1,6GnT gene family has been characterized only in mammals. Here, we describe that bovine herpesvirus type 4 (BHV-4) encodes a beta1,6GnT expressed during viral replication and exhibiting all of the core 2, core 4, and I branching activities. Sequencing of the BHV-4 genome revealed an ORF, hereafter called BORFF3-4, encoding a protein (pBORFF3-4) exhibiting 81.1%, 50.7%, and 36.6% amino acid identity with h-C2GnT-M, h-C2GnT-L, and h-IGnT, respectively. Reverse transcriptase-PCR analysis revealed that BORFF3-4 is expressed during BHV-4 replication. Expression of BORFF3-4 in Chinese hamster ovary cells directed the expression of core 2 branched oligosaccharides and I antigenic structures on the cell surface. Moreover, a soluble form of pBORFF3-4 had core 4 branching activity in addition to core 2 and I branching activities. Finally, infection of a C2GnT-negative cell line with BHV-4 induced expression of core 2 branched oligosaccharides. This study extends the beta1,6GnT gene family to a viral gene and provides a model to study the biological functions of a beta1,6GnT in the context of viral infection. [less ▲]

Detailed reference viewed: 40 (24 ULg)
Peer Reviewed
See detailA Multipotential Hydrolytic Reactor Using The Yeast-Strain Kluyveromyces-Marxianus
Rikir, R.; Weber, Dominique ULg; Campos, D. et al

in Applied Biochemistry and Biotechnology (1990), 24-25

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailMultiproxy evidence of `Little Ice Age' palaeoenvironmental changes in a peat bog from northern Poland
De Vleeschouwer, François ULg; Piotrowska, Natalia; Sikorski, Jaroslaw et al

in Holocene (2009), 19(4), 625-637

`Little Ice Age' (LIA) climatic deteriorations have been abundantly documented in various archives such as ice, lake sediments and peat bog deposits. Palaeoecological analyses of peat samples have ... [more ▼]

`Little Ice Age' (LIA) climatic deteriorations have been abundantly documented in various archives such as ice, lake sediments and peat bog deposits. Palaeoecological analyses of peat samples have identified these climatic deteriorations using a range of techniques, for example palynology, plant macrofossils, testate amoebae or carbon isotopic analyses. The use of inorganic geochemistry and the reconstruction of dust fluxes has remained a challenge in tracing the nature of LIA climatic changes. Although the idea of enhanced erosion conditions and storminess is commonly discussed, the conditions for dust deposition in peatlands over Europe during the LIA are rarely favourable, because the natural forest cover over Europe was much more important than nowadays, preventing dust deposition. This intense forest canopy masks the deposition of dust in peatlands. In northern Poland, near the Baltic shore, the S[l]owi[n]skie B[l]ota area was deforested around AD 1100, ie, just before the LIA, and therefore constitutes a key area for the reconstruction of LIA climatic change. With the support of a well-constrained chronology, climatic fluctuations are recorded in an ombrotrophic bog using inorganic geochemistry, plant macrofossils and carbon isotopic analyses. The reconstruction of LIA climatic changes is in good agreement with other records from Poland and NE Europe. However, a c. 50-year discrepancy can be observed between various records. This discrepancy is possibly due to progressive time-dependent cooling gradient from north to south Europe. [less ▲]

Detailed reference viewed: 184 (17 ULg)