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Peer Reviewed
See detailCross-talk Modeling of Wnt, BMP and ERK Pathways during Osteochondrogenic Differentiation
Geris, Liesbet ULg; Vandeput, M.; Roberts, S. et al

in Proceedings of the TERMIS-EU meeting (2010, June)

Detailed reference viewed: 17 (2 ULg)
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See detailA Cross-Validation Approach to Approximate Basis Function Selection of the Stall Flutter Response of a Rectangular Wing in a Wind Tunnel
Kukreja, Sunil L.; Vio, Gareth A.; Andrianne, Thomas ULg et al

in Proceedings of the 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (2012, April 25)

The stall flutter response of a rectangular wing in a low speed wind tunnel is modelled using a nonlinear difference equation description. Static and dynamic tests are used to select a suitable model ... [more ▼]

The stall flutter response of a rectangular wing in a low speed wind tunnel is modelled using a nonlinear difference equation description. Static and dynamic tests are used to select a suitable model structure and basis function. Bifurcation criteria such as the Hopf condition and vibration amplitude variation with airspeed were used to ensure the model was representative of experimentally measured stall flutter phenomena. Dynamic test data were used to estimate model parameters and estimate an approximate basis function. [less ▲]

Detailed reference viewed: 53 (12 ULg)
See detailCross-Words. Issues and Debates in Literary and Non-literary Translating
Pagnoulle, Christine ULg; Mason, Ian

Book published by L3 (1995)

Those sixteen contributions on the art of translating move from general considerations on what is involved in the process and specific strategies, to field-related topics such as legal translation ... [more ▼]

Those sixteen contributions on the art of translating move from general considerations on what is involved in the process and specific strategies, to field-related topics such as legal translation, teaching and assessing translations, to case studies in literary translation (Sinclair Lewis, nabokov, Queneau, Mistral, Lowell and Pound). [less ▲]

Detailed reference viewed: 132 (9 ULg)
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See detailA crossed random effects model to detect differential item functioning
Frederickx, Sofie; Magis, David ULg; Tuerlinckx, Francis et al

Conference (2008, June)

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See detailCrossed random effects models for the detection of differential item functioning in psychometrics
Magis, David ULg; Frederickx, Sofie; Tuerlinckx, Francis et al

Conference (2008, October)

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Peer Reviewed
See detailCrossing a "Human River of Shattered Lives": Caryl Phillips's Diasporic Fiction/Visions
Ledent, Bénédicte ULg

in Literary Criterion (2000), 35(1-2), 157-169

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See detailCrossing abilities of ALS Target-Site Resistant Black-grass (Alopecurus myosuroides HUDS.)
Maréchal, Pierre-Yves ULg; Henriet, François; Vancutsem, Françoise ULg et al

in Communications in Agricultural and Applied Biological Sciences (2011)

Black-grass crossings were conducted outdoor for two successive years in a way to determine the percentage of resistant black-grass that can be engendered in one generation, after the introduction of one ... [more ▼]

Black-grass crossings were conducted outdoor for two successive years in a way to determine the percentage of resistant black-grass that can be engendered in one generation, after the introduction of one Target-Site resistant individual. After germination, plants were genotyped and couples of resistant and susceptible individuals were formed, then planted outdoor and enclosed with a pollen-proof cloth to avoid any external pollen contamination. Seeds were collected and tested in glasshouses with herbicide spraying. DNA analyses were also performed on surviving plants to distinguish hetero- from homozygotes. The resistance level of the progeny seems to be fairly high and Mendelean distribution is generally confirmed. The offspring of self-crossings was also observed to assess the facultative autogamy ability, according to the genotype and the presence of mutant ALS alleles (position W-574). [less ▲]

Detailed reference viewed: 23 (4 ULg)
Peer Reviewed
See detailCrossing of two mobile averages: A method for measuring the roughness exponent
Vandewalle, Nicolas ULg; Ausloos, Marcel ULg

in Physical Review. E : Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics (1998), 58(5), 6832-6834

Self-affine signals characterized by a defined Hurst (roughness) exponent H can be investigated through mobile averages. The density rho of crossing points between any two moving averages is a measure of ... [more ▼]

Self-affine signals characterized by a defined Hurst (roughness) exponent H can be investigated through mobile averages. The density rho of crossing points between any two moving averages is a measure of long-range power-law correlations in the signal. The method is compared to the detrended fluctuation analysis. We rake advantage of our findings in order to propose a practically powerful and accurate technique for determining H and apply it right away to cases with persistent or antipersistent correlations. [less ▲]

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See detailCrosslinked polyimide foams derived from pyromellitic dianhydride and 1,1-bis(4-aminophenyl)-1-phenyl-2,2,3-trifluoroethane with poly(α-methylstyrene)
Charlier, Y.; Hedrick, James L; Russel, T. P. et al

in Polymer (1995), 36(6), 1315-1320

A new route for the synthesis of high glass transition temperature, thermally stable polymer foams with pore sizes in the nanometre regime has been developed, using compositionally asymmetric microphase ... [more ▼]

A new route for the synthesis of high glass transition temperature, thermally stable polymer foams with pore sizes in the nanometre regime has been developed, using compositionally asymmetric microphase-separated block copolymers where the minor component (poly(α-methylstyrene)) is thermally labile and the major component (polyimide) is thermally stable. The minor component can unzip to its monomer upon heating, and the decomposition products can diffuse out of the film, leaving behind pores embedded in a matrix of the thermally stable component. In this study, the polyimide block was crosslinked with ethynyl functionalities to obtain a stable porous structure. The decomposition of the α-methylstyrene in the block copolymer was studied by thermogravimetric, dynamic mechanical and thermomechanical analyses. Mild conditions were required to avoid rapid depolymerization of the α-methylstyrene and plasticization of the polyimide matrix. The foams showed pore sizes with diameters up to a micrometre in size as well as the expected reduction in the mass density. However, the crosslinking of the matrix as a means of stabilizing the expected nanofoams was not successful. [less ▲]

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See detailCrosslinking of star-shape PCLs through Diels-Alder reactions for the preparation of shape memory polymers
Defize, Thomas ULg; Riva, Raphaël ULg; Thomassin, Jean-Michel ULg et al

Poster (2012, May 10)

Poly(ε-caprolactone) (PCL), a semi-crystalline polymer, is one of the most widely studied polymers for the development of shape memory materials when chemically cross-linked. PCL presents several ... [more ▼]

Poly(ε-caprolactone) (PCL), a semi-crystalline polymer, is one of the most widely studied polymers for the development of shape memory materials when chemically cross-linked. PCL presents several advantages such as a melting transition temperature close to human body temperature, a high biocompatibility and is (bio)degradable. So, this polymer is highly relevant for both biomedical devices such as stents or resorbable suture wires and also for degradable packaging. However, after cross-linking, the material can not be reprocessed, preventing any reuse/recycling of the material. One of the purposes of this work is to find a solution to this major drawback, which would then allow, for example, to reshape packaging films after use or to recycle trimmings remaining after fabrication. Amongst current trends in the design of new polymer and composite materials, the use of organic reactions that are able to create and reversibly disrupt chemical bonds upon an external stimulus (temperature, irradiation,…) is currently gaining more and more attention as it can lead to applications in various areas such as remendable materials, drug delivery systems, stimulus-degrading materials or recyclable materials. This contribution aims at reporting a new concept for the preparation of well defined and recyclable PCL based reversibly cross-linked shape memory polymer by the formation of reversible carbon-carbon bonds. Amongst all the reversible links described in the literature, thermally (4+2) reversible cycloadditions present interesting features such as the creation of robust bonds and well defined reversibility conditions. As an example, the application of furan/maleimide adducts as covalent link, which cycloreversion is largely favored in the range of temperature (90-120°C), is widely reported. For this purpose, commercially-available star-shaped PCL precursors have been selected and selectively modified at their chain ends either by a diene (furan, anthracene) or a dienophile (maleimide). Typically, PCL-based shape memory materials have been prepared by mixing a stoichiometric amount of diene-bearing and maleimide-bearing PCLs in a twin-screw mini-extruder at a temperature which favors cycloreversion. The polymer blend is then cured at 65°C (just above PCL melting temperature), with the purpose to increase chains mobility and improve the formation of the adducts. Cross-linked PCLs were obtained, as evidenced by swelling experiments. The shape memory properties of the materials have been studied by cyclic tensile thermomechanical analysis. The influence of the nature of the Diels-Alder moieties on the cross-linking rate and on the shape memory properties has been studied. Reversibility of the network formation in the case of furan, used as diene, has been assessed by rheology and by recycling experiment. [less ▲]

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See detailCrossmodal plasticity but no functional specialization in the occipital cortex of adventitiously blind human
Collignon, O; Albouy, G ULg; Dormal, G et al

in NeuroImage (2011), 56(Suppl. 1),

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See detailCrossover from intravalley to intervalley vortex motion in type-II superconductors with a periodic pinning array
Raedts, S.; Silhanek, Alejandro ULg; Moshchalkov, V. V. et al

in Physical Review. B : Condensed Matter (2006), 73(17),

We have determined the transition from intravalley vortex motion (Campbell regime) to intervalley motion (critical state regime) in Pb thin films with and without a square array of holes (antidots) by ... [more ▼]

We have determined the transition from intravalley vortex motion (Campbell regime) to intervalley motion (critical state regime) in Pb thin films with and without a square array of holes (antidots) by means of ac susceptibility chi(T,H) measurements. The Campbell regime is characterized by a maximum dissipation chi(')(max) dependent on the ac excitation h but nearly temperature independent. In contrast, in the critical state regime, the height of the dissipation peak remains constant, whereas its position shifts to lower temperatures with increasing h. We introduce an alternative way for determining the temperature dependence of the ac onset of the Bean critical state by analyzing the critical current density J(T) extracted from the chi(')(T) data at several h. We demonstrate that the presence of a periodic pinning array strongly affects the extension of the crossover area in the h-T diagram between these regimes. We show that this effect can be ascribed to the lower dispersion of the pinning energy together with the higher topological order for the antidot sample. [less ▲]

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Peer Reviewed
See detailCrossover Iliofemoral Bypass Grafting for Treatment of Unilateral Iliac Atherosclerotic Disease
Defraigne, Jean-Olivier ULg; Vazquez, C.; Limet, Raymond ULg

in Journal of Vascular Surgery : Official Publication, the Society for Vascular Surgery and International Society For Cardiovascular Surgery, North American Chapter (1999), 30(4), 693-700

PURPOSE: In patients with unilateral iliac disease, a less invasive procedure than aortobifemoral bypass grafting may be desirable, especially in poor-risk patients or when sexual dysfunction is feared ... [more ▼]

PURPOSE: In patients with unilateral iliac disease, a less invasive procedure than aortobifemoral bypass grafting may be desirable, especially in poor-risk patients or when sexual dysfunction is feared. In these cases, femorofemoral (FF) bypass grafting is often proposed. Compared with FF bypass grafting, iliofemoral (IF) bypass grafting avoids bilateral exposure of the groins, which may reduce the risk of infection. When the primitive iliac artery is occluded from its origin or heavily calcified, one may use the contralateral artery as inflow, after a small retroperitoneal exposure, to perform a crossover iliofemoral (CIF) bypass grafting procedure, through the Retzius space. Our 10-year experience with CIF bypass grafting in a select group of patients was studied. METHODS: Between 1986 and 1996, 36 patients underwent CIF bypass grafting for symptomatic unilateral iliac occlusion or stenosis. All patients were examined by means of Doppler ultrasound scanning and underwent bilateral multiplane angiography. Patients were considered for this procedure when the ipsilateral common iliac artery was occluded from its origin or was diffusely and heavily calcified. The decision to perform a CIF bypass grafting procedure was made when no significant disease of the contralateral common iliac artery was seen, and patients who had features of contralateral iliac disease were excluded. The main outcomes were perioperative mortality and morbidity, long-term primary and secondary patency rates, and limb salvage rate. RESULTS: The study included 31 men and five women, with a mean age of 58.8 years. Indications for bypass grafting were disabling claudication (26 of 36 patients, 72%) and limb-threatening ischemia (10 of 26 patients, 28%). Twelve procedures were performed simultaneously: endarterectomy of the recipient common femoral artery (n = 3), femoropopliteal bypass grafting (n = 4, 11.1%), profundoplasty (n = 4, 11%), and right internal carotid endarterectomy (n = 1). New postoperative erectile dysfunction did not develop in any of the patients. The survival rate was 97.3% at 1 year and 68.5% at 5 years. The primary and secondary patency rates were 94% and 100%, respectively, at 1 year and 76.7% and 95%, respectively, at 5 years. The limb salvage rate was 100% at 1 year and 87% at 3 years. CONCLUSION: The operative mortality associated with CIF is low. The long-term primary and secondary patency rates are satisfactory, and they are lower than those reported for aortobifemoral bypass grafting. This procedure does not preclude a later performance of an aortobifemoral bypass grafting procedure. CIF bypass grafting is not only suitable for poor-risk patients with a limited life expectancy who have the appropriate arterial anatomy, but also may be warranted for young patients in whom erectile dysfunction is feared. [less ▲]

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See detailCROSSROADS
Sacré, Robert ULg

Diverse speeche and writing (2014)

Programme radio hebdomadaire (chaque mercredi 18h-20h) sur Equinoxe FM 100.1 streaming www.equinoxefm.be

Detailed reference viewed: 7 (0 ULg)
See detailCROSSROADS le magazine sonore des musiques africaines-amé&ricaines
Sacré, Robert ULg

Diverse speeche and writing (2014)

Programme radio hebdomadaire consacré aux musiques africaines-américaines podcasts : wwxw.mixcloud.com/robertsacre9 - www.equinoxefm.be

Detailed reference viewed: 9 (0 ULg)
See detailCROSSROADS le magazine sonore des musiques africaines-amé&ricaines
Sacré, Robert ULg

Diverse speeche and writing (2014)

Programme radio hebdomadaire ( chaque mercredi de 18h à 20h) : musiques africaines-américaines sur Equinoxe FM 100.1 ; en streaming sur www.equinnoxefm.be

Detailed reference viewed: 8 (0 ULg)
See detailCROSSROADS le magazine sonore des musiques africaines-américaines
Sacré, Robert ULg

Diverse speeche and writing (2014)

Programme radio hebdomadaire consacré aux musiques africaines américaines - www.equinoxefm.be podcasts : www.mixcloud.com/robertsacre9

Detailed reference viewed: 9 (0 ULg)
See detailCROSSROADS - magazine sonore des musiques noires US
Sacré, Robert ULg

in Sacré, Robert (Ed.) CROSSROADS le magazine sonore des musiques africaines américaines (2014)

émission radio hebdomadaire diffusée sur EQUINOXE FM 100.1 (on line via www.equinoxefm.be) : tous les mercredis de 18 à 20h : contenu : blues,R&B,Soul, gospel, Zydeco, jazz

Detailed reference viewed: 16 (0 ULg)
See detailCROSSROADS - magazine sonore des musiques noires US
Sacré, Robert ULg

Diverse speeche and writing (2014)

émission radio hebdomadaire diffusée sur EQUINOXE FM 100.1 (on line via www.equinoxefm.be) : tous les mercredis de 18 à 20h : contenu : blues,R&B,Soul, gospel, Zydeco, jazz

Detailed reference viewed: 12 (0 ULg)
See detailCROSSROADS - magazine sonore des musiques noires US
Sacré, Robert ULg

Diverse speeche and writing (2014)

émission radio hebdomadaire diffusée sur EQUINOXE FM 100.1 (on line via www.equinoxefm.be) : tous les mercredis de 18 à 20h : contenu : blues,R&B,Soul, gospel, Zydeco, jazz

Detailed reference viewed: 16 (1 ULg)