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Peer Reviewed
See detailHigh-Dose Riboflavin as a Prophylactic Treatment of Migraine: Results of an Open Pilot Study
Schoenen, Jean ULg; Lenaerts, M.; Bastings, E.

in Cephalalgia : An International Journal of Headache (1994), 14(5), 328-9

If the brain of migraineurs is characterized between attacks by a reduction of mitochondrial phosphorylation potential, riboflavin, which has the potential of increasing mitochondrial energy efficiency ... [more ▼]

If the brain of migraineurs is characterized between attacks by a reduction of mitochondrial phosphorylation potential, riboflavin, which has the potential of increasing mitochondrial energy efficiency, might have prophylactic effects in migraine. In this preliminary open pilot study, 49 patients suffering from migraine (45 without aura, 4 with aura) were treated with 400 mg of riboflavin as a single oral dose for at least 3 months. Twenty-three patients received in addition 75 mg of aspirin. Mean global improvement after therapy was 68.2% and there was no difference between the two groups of patients. With the exception of one patient in the riboflavin plus aspirin group who withdrew because of gastric intolerance, no drug-related side effects were reported. High-dose riboflavin could thus be an effective, low-cost prophylactic treatment of migraine devoid of short-term side effects. A placebo-controlled trial of its efficacy seems worthwhile. [less ▲]

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See detailHigh-efficiency biolistic transformation of Chlamydomonas mitochondria can be used to insert mutations in complex I genes
Remacle, Claire ULg; Cardol, Pierre ULg; Coosemans, Nadine ULg et al

in Proceedings of the National Academy of Sciences of the United States of America (2006), 103(12), 4771-4776

Mitochondrial transformation of Chlamydomonas reinhardtii has been optimized by using a particle-gun device and cloned mitochondrial DNA or PCR fragments. A respiratory-deficient strain lacking a 1.2-kb ... [more ▼]

Mitochondrial transformation of Chlamydomonas reinhardtii has been optimized by using a particle-gun device and cloned mitochondrial DNA or PCR fragments. A respiratory-deficient strain lacking a 1.2-kb mitochondrial DNA region including the left telomere and part of the cob gene could be rescued as well as a double-frameshift mutant in the mitochondrial cox1 and nd1 genes. High transformation efficiency has been achieved (100-250 transformants per microgram of DNA), the best results being obtained with linearized plasmid DNA. Molecular analysis of the transformants suggests that the right telomere sequence can be copied to reconstruct the left telomere by recombination. In addition, both nondeleterious and deleterious mutations could be introduced. Myxothiazol-resistant transformants have been created by introducing a nucleotide substitution into the cob gene. Similarly, an in-frame deletion of 23 codons has been created in the nd4 mitochondrial gene of both the deleted and frameshift recipient strains. These 23 codons are believed to encode the first transmembrane segment of the ND4 protein. This Delta nd4 mutation causes a misassembly of complex 1, with the accumulation of a subcomplex that is 250-kDa smaller than the wild-type complex 1. The availability of efficient mitochondrial transformation in Chlamydomonas provides an invaluable tool for the study of mitochondrial biogenesis and, more specifically, for site-directed mutagenesis of mitochondrially encoded subunits of complex 1, of special interest because the yeast Saccharomyces cerevisiae, whose mitochondrial genome can be manipulated virtually at will, is lacking complex 1. [less ▲]

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See detailHigh-Efficiency Liquid-Liquid Phase Separation Using Internals
Chatterjee, M; Franken, H; Hülswitt, N et al

Conference (2003)

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See detailHigh-energy forward scattering and the pomeron: Simple pole versus unitarized models
Cudell, Jean-René ULg; Ezhela, V.; Kang, K. et al

in Physical Review. D : Particles and Fields (2000), 61

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See detailHigh-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC
Cudell, Jean-René ULg; Predazzi, E.; Selyugin, Oleg Viktorovich

in European Physical Journal A -- Hadrons & Nuclei (2004), 21(3), 479-486

In the case of elastic high-energy hadron-hadron scattering, the impact of the large-distance contributions on the behaviour of the slopes of the spin-non-flip and of the spin-flip amplitudes is analysed ... [more ▼]

In the case of elastic high-energy hadron-hadron scattering, the impact of the large-distance contributions on the behaviour of the slopes of the spin-non-flip and of the spin-flip amplitudes is analysed. It is shown that the long tail of the hadronic potential in impact parameter space leads to a value of the slope of the reduced spin-flip amplitude larger than that of the spin-non-flip amplitude. This effect is taken into account in the calculation of the analysing power in proton-nucleus reactions at high energies. It is shown that the preliminary measurement of A(N) (for p 12C obtained by the E950 Collaboration indeed favours a spin-flip amplitude with a large slope. Predictions for A)(N) (at P)(L) = 250 GeV/c are given. [less ▲]

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See detailHigh-Energy Physics with Particles Carrying Non-Zero Orbital Angular Momentum
Ivanov, Igor ULg

in Few-Body Systems (2011)

Thanks to progress in optics in the past two decades, it is possible to create photons carrying well-defined non-zero orbital angular momentum (OAM). Boosting these photons into high-energy range ... [more ▼]

Thanks to progress in optics in the past two decades, it is possible to create photons carrying well-defined non-zero orbital angular momentum (OAM). Boosting these photons into high-energy range preserving their OAM seems feasible. Intermediate energy electrons with OAM have also been produced recently. One can, therefore, view OAM as a new degree of freedom in high-energy collisions and ask what novel insights it can bring. Here we discuss generic features of scattering processes involving twisted particles in the initial state. We show that they make it possible to perform a Fourier analysis of a plane wave cross section with respect to the azimuthal angles of the initial particles, and to probe the autocorrelation function of the amplitude, a quantity inaccessible in plane wave collisions. [less ▲]

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See detailHigh-energy X-ray tomography analysis of a metal packing biofilm reactor for the production of lipopeptides by Bacillus subtilis
Zune, Quentin ULg; Soyeurt, Delphine; Toye, Dominique ULg et al

in Journal of Chemical Technology & Biotechnology (2014), 89

BACKGROUND: Whereas multi-species biofilm reactors are commonly used for the treatment of liquid and solid wastes, new strategies are progressing for the development of single species biofilm for the ... [more ▼]

BACKGROUND: Whereas multi-species biofilm reactors are commonly used for the treatment of liquid and solid wastes, new strategies are progressing for the development of single species biofilm for the production of high-value metabolites. Technically, this new concept relies on the design of bioreactors able to promote biofilm formation and on the identification of the key physico-chemical parameters involved in biofilm formation. RESULTS: An experimental setting comprising a liquid continuously recirculated on a metal structured packing has been used to promote Bacillus subtilis GA1 biofilm formation. The colonization of the packing has been visualized non-invasively by X-ray tomography. This analysis revealed an uneven, conical, distribution of the biofilm inside the packing. Compared with a submerged culture carried out in a stirred tank reactor, significant modification of the lipopeptide profile has been observed in the biofilm reactorwith the disappearance of fengycin and iturin fractions and an increase of the surfactin fraction. In addition, considering the biofilm reactor design, no foam formation has been observed during the culture. CONCLUSIONS: The configuration of this biofilm reactor set-up allows for a higher surfactin production by comparison with a submerged culture while avoiding foam formation. Additionally, scale-up could easily be performed by increasing the number of packing elements. [less ▲]

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See detailHigh-field magnetization of U2T2X compounds (T = Co, Ni, Rh, Pd, Ir, Pt and X = In, Sn)
Nakotte, Heinz; Prokes, Karel; Brück, E. et al

Poster (1993, November)

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See detailHigh-field magnetization of U2T2X compounds (T = Co, Rh, Ni, Pd, Ir, Pt and X = In, Sn)
Nakotte, Heinz; Prokes, Karel; Brück, E. et al

in Physica B: Condensed Matter (1994), 201

Structure parameters and magnetization in quasistatic fields up to 38 T at 4.2 K are reported for U2T2X compounds with T = Co, Rh, Ni, Pd, Ir, Pt and X = In, Sn, which crystalline in the tetragonal U3Si2 ... [more ▼]

Structure parameters and magnetization in quasistatic fields up to 38 T at 4.2 K are reported for U2T2X compounds with T = Co, Rh, Ni, Pd, Ir, Pt and X = In, Sn, which crystalline in the tetragonal U3Si2 structure. Even the highest applied fields are not sufficient to achieve saturation of the magnetization in any of these compounds of which the majority is antiferromagnetic and some are Pauli paramagnets. The importance of 5f-ligand hybridization for the magnetism in these compounds is discussed. [less ▲]

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See detailHigh-frequency A-type pulsators discovered using SuperWASP
Holdsworth, Daniel L.; Smalley, B.; Gillon, Michaël ULg et al

in Monthly Notices of the Royal Astronomical Society (2014)

We present the results of a survey using the WASP archive to search for high-frequency pulsations in F-, A- and B-type stars. Over 1.5 million targets have been searched for pulsations with amplitudes ... [more ▼]

We present the results of a survey using the WASP archive to search for high-frequency pulsations in F-, A- and B-type stars. Over 1.5 million targets have been searched for pulsations with amplitudes greater than 0.5 millimagnitude. We identify over 350 stars which pulsate with periods less than 30 min. Spectroscopic follow-up of selected targets has enabled us to confirm 10 new rapidly oscillating Ap stars, 13 pulsating Am stars and the fastest known δ Scuti star. We also observe stars which show pulsations in both the high-frequency domain and the low-frequency δ Scuti range. This work shows the power of the WASP photometric survey to find variable stars with amplitudes well below the nominal photometric precision per observation. [less ▲]

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See detailHigh-frequency correction method for CO2 and water vapour fluxes: an application on Walloon Terrestrial Observatories data
De Ligne, Anne ULg

Report (2015)

High frequency concentration fluctuations are attenuated by the eddy covariance (EC) sensors system. This is due to an inability of the EC system to process eddies of small size and induces an ... [more ▼]

High frequency concentration fluctuations are attenuated by the eddy covariance (EC) sensors system. This is due to an inability of the EC system to process eddies of small size and induces an underestimation of the fluxes. The two main reasons are the fluid frictions through the inlet tube of the gas analyzer and the separation of the sensors position between the center of the anemometer and the inlet tube. A correction factor is then needed for CO2 and H2O fluxes. In this study, we describe a new procedure for the high frequency correction (HFC). This new HFC is applied for the CO2 and H2O fluxes measured at Vielsalm and Lonzée since their setup. Finally, we compare the former and updated corrected fluxes of these two sites which are part of the Terrestrial Observatories of Belgium. Both Observatories are included in the European ecosystem network of ICOS. [less ▲]

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See detailHigh-Frequency Integral Equation Solver for 3-D Wave Scattering Around Convex Obstacles
Geuzaine, Christophe ULg; Bruno, Oscar; V Sabariego, Ruth ULg et al

in Proceedings of 6ème Conférence Européenne sur les Méthodes Numériques en Electromagnétisme (NUMELEC2008) (2008)

We present a numerical method for the computation of wave scattering by convex three-dimensional obstacles, which exhibits a bounded computational complexity for arbitrarily high frequencies. The method ... [more ▼]

We present a numerical method for the computation of wave scattering by convex three-dimensional obstacles, which exhibits a bounded computational complexity for arbitrarily high frequencies. The method is based on a combination of a high-frequency ansatz for the unknown density in a boundary integral formulation of the problem, and an extension of the ideas of the method of stationary phase to allow for the efficient integration of oscillatory functions. The method builds upon the ideas proposed in [2] and [1]. [less ▲]

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See detailHigh-Frequency Integral Equation Solvers for Acoustic and Electromagnetic Scattering Problems
Geuzaine, Christophe ULg

Scientific conference (2007, December 12)

Detailed reference viewed: 6 (1 ULg)
See detailHigh-Frequency Integral Equation Solvers for Acoustic and Electromagnetic Scattering Problems
Geuzaine, Christophe ULg

Scientific conference (2008, February 29)

Detailed reference viewed: 6 (0 ULg)
See detailHigh-Frequency Integral Equation Solvers for Acoustic and Electromagnetic Scattering Problems
Geuzaine, Christophe ULg

Scientific conference (2008, February 14)

Detailed reference viewed: 6 (0 ULg)
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See detailHigh-frequency oscillatory ventilation in neonatal RDS: Initial volume optimization and respiratory mechanics
Kalenga, Masendu ULg; Battisti, Oreste ULg; François, A. et al

in Journal of Applied Physiology (1998), 84

Detailed reference viewed: 36 (7 ULg)
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See detailHigh-frequency ventilation in cats: technical data
Clercx, Cécile ULg; Lekeux, Pierre ULg; Degroote, A. et al

in 4th Comparative Respiratory Society meeting - Anaheim California - USA (1985)

Detailed reference viewed: 5 (1 ULg)
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See detailHigh-Grade Pleomorphic T Cell Lymphoma with Restricted Involvement of Skin and Bone Marrow
Gautier, M. S.; Pierard, Gérald ULg; Andrien, Francine ULg et al

in Dermatology : International Journal for Clinical & Investigative Dermatology (1993), 186(4), 287-9

Pleomorphic T cell lymphoma of the medium to large cell type expressing CD30 antigen is a most aggressive peripheral T cell lymphoma. Currently, there is no satisfactory treatment available for this ... [more ▼]

Pleomorphic T cell lymphoma of the medium to large cell type expressing CD30 antigen is a most aggressive peripheral T cell lymphoma. Currently, there is no satisfactory treatment available for this neoplasm. We report the case of a woman with prominent skin and bone marrow involvement without detectable lymph node localization. This unusual presentation of disease responded well to polychemotherapy combined with autologous bone marrow transplantation. [less ▲]

Detailed reference viewed: 32 (0 ULg)