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
Peer Reviewed
See detailComplete genome sequence of Equid herpesvirus 3
Sijmons, S.; Vissani, A.; Tordoya, M.S. et al

in Genome Announcements (2014), 2

Detailed reference viewed: 9 (1 ULg)
Full Text
Peer Reviewed
See detailThe Complete Genome Sequence Of The Gram-Positive Bacterium Bacillus Subtilis
Kunst, F.; Ogasawara, N.; Moszer, I. et al

in Nature (1997), 390(6657), 249-256

Bacillus subtilis is the best-characterized member of the Gram-positive bacteria. Its genome of 4,214,810 base pairs comprises 4,100 protein-coding genes. Of these protein-coding genes, 53% are ... [more ▼]

Bacillus subtilis is the best-characterized member of the Gram-positive bacteria. Its genome of 4,214,810 base pairs comprises 4,100 protein-coding genes. Of these protein-coding genes, 53% are represented once, while a quarter of the genome corresponds to several gene families that have been greatly expanded by gene duplication, the largest family containing 77 putative ATP-binding transport proteins. In addition, a large proportion of the genetic capacity is devoted to the utilization of a variety of carbon sources, including many plant-derived molecules. The identification of five signal peptidase genes, as well as several genes for components of the secretion apparatus, is important given the capacity of Bacillus strains to secrete large amounts of industrially important enzymes. Many of the genes are involved in the synthesis of secondary metabolites, including antibiotics, that are more typically associated with Streptomyces species. The genome contains at least ten prophages or remnants of prophages, indicating that bacteriophage infection has played an important evolutionary role in horizontal gene transfer, in particular in the propagation of bacterial pathogenesis. [less ▲]

Detailed reference viewed: 1398 (19 ULg)
Full Text
Peer Reviewed
See detaila complete insect from the Late Devonian period - supplementary information
Garrouste, Romain; Clément, Gaël; Nel, Patricia et al

in Nature (2012)

Detailed reference viewed: 41 (6 ULg)
Full Text
Peer Reviewed
See detailA complete insect from the Late Devonian period
Garrouste, Romain; Clément, Gaël; Nel, Patricial et al

in Nature (2012), 488

Detailed reference viewed: 68 (16 ULg)
Peer Reviewed
See detailComplete Nucleotide Sequence Of Saccharomyces Cerevisiae Chromosome X
Galibert, F.; Alexandraki, D.; Baur, A. et al

in Embo Journal (1996), 15(9),

Detailed reference viewed: 12 (3 ULg)
Peer Reviewed
See detailA Complete Open-Source Solution for Electromagnetic Field Computation
Geuzaine, Christophe ULg; Dular, Patrick ULg; Remacle, J.-F.

in Proceedings of the 12th IEEE Conference on Electromagnetic Field Computation, CEFC 2006 (2006)

Detailed reference viewed: 63 (2 ULg)
See detailComplete Resistance to Gonadotropin Hormone Releasing Hormone (Gn-RH) Agonist Therapy for Metastatic Prostate Cancer
Valdes Socin, Hernan Gonzalo ULg; Waltregny, David ULg; Beckers, Albert ULg

in European Neuroendocrine Association - Liège, 22-25 septembre 2010 (2010, September)

Detailed reference viewed: 14 (2 ULg)
Full Text
Peer Reviewed
See detailCompletely inelastic ball
Gilet, Tristan ULg; Vandewalle, Nicolas ULg; Dorbolo, Stéphane ULg

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2009)

Detailed reference viewed: 133 (27 ULg)
Full Text
Peer Reviewed
See detailCompletion of biological networks: the output kernel trees approach
Geurts, Pierre ULg; Touleimat, Nizar; Dutreix, Marie et al

in Proceedings of the the Workshop on Probabilistic Modeling and Machine Learning in Structural and Systems Biology (2006)

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailA complex anterior mediastinal mass: demonstration of pericardial haemangioma by dynamic MRI (2003:10b).
NCHIMI LONGANG, Alain ULg; Ghaye, B.; Szapiro, D. et al

in European Radiology (2004), 14(1), 160-3

Detailed reference viewed: 12 (4 ULg)
Full Text
See detailThe complex behavior of the satellite footprints at Jupiter: the result of universal processes?
Bonfond, Bertrand ULg; Grodent, Denis ULg; Badman, Sarah V. et al

Poster (2016, December 14)

At Jupiter, some auroral emissions are directly related to the electromagnetic interaction between the moons Io, Europa and Ganymede on one hand and the rapidly rotating magnetospheric plasma on the other ... [more ▼]

At Jupiter, some auroral emissions are directly related to the electromagnetic interaction between the moons Io, Europa and Ganymede on one hand and the rapidly rotating magnetospheric plasma on the other hand. Out of the three, the Io footprint is the brightest and the most studied. Present in each hemisphere, it is made of at least three different spots and an extended trailing tail. The variability of the brightness of the spots as well as their relative location has been tentatively explained with a combination of Alfvén waves’ partial reflections on density gradients and bi-directional electron acceleration at high latitude. Should this scenario be correct, then the other footprints should also show the same behavior. Here we show that all footprints are, at least occasionally, made of several spots and they all display a tail. We also show that these spots share many characteristics with those of the Io footprint (i.e. some significant variability on timescales of 2-3 minutes). Additionally, we present some Monte-Carlo simulations indicating that the tails are also due to Alfvén waves electron acceleration rather than quasi-static electron acceleration. Even if some details still need clarification, these observations strengthen the scenario proposed for the Io footprint and thus indicate that these processes are universal. In addition, we will present some early results from Juno-UVS concerning the location and morphology of the footprints during the first low-altitude observations of the polar aurorae. These observations, carried out in previously unexplored longitude ranges, should either confirm or contradict our understanding of the footprints. [less ▲]

Detailed reference viewed: 24 (6 ULg)
Peer Reviewed
See detailA complex composed of at least two HeLa nuclear proteins protects preferentially one DNA strand of the simple (gt)n(ga)m containing region of intron 2 in HLA-DRB genes.
Maueler, Winfried; Frank, G.; Muller, Marc ULg et al

in Journal of Cellular Biochemistry (1994), 56(1), 74-85

Electrophoretic mobility shift assays reveal that HeLa nuclear proteins bind fast and with measurable affinity to target DNAs containing mixed simple repetitive (gt)n(ga)m stretches. Preincubation of the ... [more ▼]

Electrophoretic mobility shift assays reveal that HeLa nuclear proteins bind fast and with measurable affinity to target DNAs containing mixed simple repetitive (gt)n(ga)m stretches. Preincubation of the proteins at elevated temperature prevents the formation of the major DNA/protein complex in favour of several distinct assemblies. A similar pattern of retarded bands was observed employing higher salt concentrations in the binding reaction. Thus conformational changes of different proteins appear to influence the complex rather than alternating DNA structures. Separation of the total nuclear extract into a water soluble and an insoluble protein fraction leads to a complete loss of target DNA binding capability of the fractions. The binding capacity is restored by combining the two fractions suggesting that at least two protein components are necessary to form a complex with the target sequence. The proteins can be differentiated into heat sensitive, water soluble and temperature stable, water insoluble, respectively. Furthermore, specifically binding polypeptides are not detectable by Southwestern analyses, probably because the essential components are separated during electrophoresis. DNase I footprint analyses yield four different protein binding regions only on the (gt)n(ga)m harbouring strand. The footprints cover larger portions of the mixed simple repeat in addition to a portion 5' of the (gt)n part. Hence at least two nuclear protein components of unknown biological function have to be present simultaneously to protect preferentially the (gt)n(ga)m-containing strand of intron 2 in HLA-DRB genes. [less ▲]

Detailed reference viewed: 34 (1 ULg)
Full Text
Peer Reviewed
See detailComplex dynamics and targeted energy transfer in linear oscillators coupled to multi-degree-of-freedom essentially nonlinear attachments
Tsakirtzis, Stylianos; Panagopoulos, Panagiotis; Kerschen, Gaëtan ULg et al

in Nonlinear Dynamics (2007), 48(3), 285-318

We study the dynamics of a system of coupled linear oscillators with a multi-DOF end attachment with essential (nonlinearizable) stiffness nonlinearities. We show numerically that the multi-DOF attachment ... [more ▼]

We study the dynamics of a system of coupled linear oscillators with a multi-DOF end attachment with essential (nonlinearizable) stiffness nonlinearities. We show numerically that the multi-DOF attachment can passively absorb broadband energy from the linear system in a one-way, irreversible fashion, acting in essence as nonlinear energy sink (NES). Strong passive targeted energy transfer from the linear to the nonlinear subsystem is possible over wide frequency and energy ranges. In an effort to study the dynamics of the coupled system of oscillators, we study numerically and analytically the periodic orbits of the corresponding undamped and unforced hamiltonian system with asymptotics and reduction. We prove the existence of a family of countable infinity of periodic orbits that result from combined parametric and external resonance interactions of the masses of the NES. We numerically demonstrate that the topological structure of the periodic orbits in the frequency-energy plane of the hamiltonian system greatly influences the strength of targeted energy transfer in the damped system and, to a great extent, governs the overall transient damped dynamics. This work may be regarded as a contribution towards proving the efficacy the utilizing essentially nonlinear attachments as passive broadband boundary controllers. [less ▲]

Detailed reference viewed: 44 (3 ULg)
Full Text
Peer Reviewed
See detailComplex dynamics of a linear oscillator with a nonlinear attachment
Lee, Young Sup; Kerschen, Gaëtan ULg; Vakakis, Alexander F. et al

in Fifth EUROMECH Nonlinear Dynamics Conference, Eindhoven, 2005 (2005, August)

We study the dynamics of a two-degree-of-freedom (DOF) nonlinear system consisting of a grounded linear oscillator coupled to a light mass by means of an essentially nonlinear (nonlinearizable) stiffness ... [more ▼]

We study the dynamics of a two-degree-of-freedom (DOF) nonlinear system consisting of a grounded linear oscillator coupled to a light mass by means of an essentially nonlinear (nonlinearizable) stiffness. We show that the structure of periodic orbits of the undamped system greatly influences the damped dynamics, as it causes complicated transitions between modes in the damped transient motion. In addition, there is the possibility of strong passive energy transfer (energy pumping) from the linear oscillator to the nonlinear attachment if certain periodic orbits of the undamped dynamics are excited by the initial conditions.. [less ▲]

Detailed reference viewed: 26 (1 ULg)
Full Text
Peer Reviewed
See detailComplex dynamics of a nonlinear aerospace structure: experimental identification and modal interactions
Noël, Jean-Philippe ULg; Renson, Ludovic ULg; Kerschen, Gaëtan ULg

in Journal of Sound & Vibration (2014), 333

Nonlinear system identification is a challenging task in view of the complexity and wide variety of nonlinear phenomena. The present paper addresses the identification of a real-life aerospace structure ... [more ▼]

Nonlinear system identification is a challenging task in view of the complexity and wide variety of nonlinear phenomena. The present paper addresses the identification of a real-life aerospace structure possessing a strongly nonlinear component with multiple mechanical stops. The complete identification procedure, from nonlinearity detection and characterization to parameter estimation, is carried out based upon experimental data. The combined use of various analysis techniques, such as the wavelet transform and the restoring force surface method, brings different perspectives to the dynamics. Specifically, the structure is shown to exhibit particularly interesting nonlinear behaviors, including jumps, modal interactions, force relaxation and chattering during impacts on the mechanical stops. [less ▲]

Detailed reference viewed: 64 (17 ULg)
Full Text
Peer Reviewed
See detailComplex dynamics of a nonlinear aerospace structure: numerical continuation and normal modes
Renson, Ludovic ULg; Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg

in Nonlinear Dynamics (2015), 79(2), 1293-1309

This paper investigates the dynamics of a real-life aerospace structure possessing a strongly nonlinear component with multiple mechanical stops. A full-scale finite element model is built for gaining ... [more ▼]

This paper investigates the dynamics of a real-life aerospace structure possessing a strongly nonlinear component with multiple mechanical stops. A full-scale finite element model is built for gaining additional insight into the nonlinear dynamics that was observed experimentally, but also for uncovering additional nonlinear phenomena, such as quasiperiodic regimes of motion. Forced/unforced, damped/undamped numerical simulations are carried out using advanced techniques and theoretical concepts such as numerical continuation and nonlinear normal modes. [less ▲]

Detailed reference viewed: 55 (9 ULg)
Full Text
Peer Reviewed
See detailComplex fluis droplets in leidenfrost state
Dorbolo, Stéphane ULg; Maquet, Laurent ULg; Sobac, Benjamin et al

in Droplet wetting and evaporation, 1st Edition, From pure to complex fluids (2015)

Detailed reference viewed: 25 (5 ULg)
Full Text
See detailComplex genetic structures between nascent species in Southeast Asian Black rats (Rattus rattus complex)
Pagès, Marie ULg; Bazin, Eric; Galan, Maxime et al

Scientific conference (2012, January 19)

Black rats are among the major invasive vertebrates with severe ecological, economic and health impacts. Remarkably, their evolutionary history has received little attention and there is no firm agreement ... [more ▼]

Black rats are among the major invasive vertebrates with severe ecological, economic and health impacts. Remarkably, their evolutionary history has received little attention and there is no firm agreement on how many species should be recognized within the Black rat complex. Members of the species complex are native from India and Southeast Asia. Current taxonomy suggests that three taxa live in sympatry in several places of Thailand, Cambodia and Lao People's Democratic Republic where the present study was conducted: two accepted species (Rattus tanezumi, Rattus sakeratensis) and an additional mitochondrial lineage of unclear taxonomic status here referred as ‘Rattus R3’. We used an extensive sampling, morphological data and diverse genetic markers of different evolutionary rates and parental inheritance (two mitochondrial DNA genes, one nuclear gene and eight microsatellite loci) to assess the reproductive isolation between these three taxa. Two close Asian relatives, Rattus argentiventer and Rattus exulans, were included in the genetic analyses for comparison. Genetic analyses revealed discordant patterns between the mitochondrial and the nuclear data. The mitochondrial phylogeny identified three reciprocally monophyletic clades in the Black rat complex. Yet, the phylogeny of the nuclear exon IRBP and the clustering and assignation analyses using the eight microsatellites failed to separate tanezumi and R3. Morphometric analyses reinforced the nuclear data. The incongruence between mitochondrial data and nuclear (and morphological) data, render tanezumi/R3 paraphyletic for mitochondrial lineages with respect to sakeratensis. Different evolutionary processes such as shared ancestral polymorphism and incomplete lineage sorting or hybridization with massive mitochondrial introgression between incipient species may be invoked to account for this unusual genetic pattern in mammals. [less ▲]

Detailed reference viewed: 82 (2 ULg)