References of "2004"
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See detailRange-dependence compensation in bistatic radar STAP
Lapierre, Fabian D.; Verly, Jacques ULiege

Conference (2004)

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See detailRôle pléiotrope de la protéine CRP chez Streptomyces coelicolor
Derouaux, Adeline ULiege; Titgemeyer, Fritz; Dusart, Jean et al

Conference (2004)

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See detailLes forces centrifuges de la mobilité facilitée, le système des quotidiennetés urbaines et la recomposition des espaces urbains
Halleux, Jean-Marie ULiege

in Montulet, B.; Kaufmann, V. (Eds.) Mobilités, fluidités... libertés ? (2004)

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See detailPas si bête ... ou le propre de l'animal.
Poncin, Pascal ULiege; Huynen, Marie-Claude ULiege; Ruwet, Jean-Claude

Conference (2004)

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See detailBiomass production of 17 poplar clones in a short-rotation coppice culture and its relation to soil characteristics.
Laureysens, I; Bogaert, Jan ULiege; Blust, R et al

in Forest Ecology & Management (2004), 187(2), 295-309

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See detailSivry - Rance: notice explicative de la carte géologique de la Wallonie
Marion, Jean-Marc ULiege; Barchy, Laurent ULiege

Book published by Ministère de la Région wallonne, DGRNE (2004)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using scientific data produced since the previous edition of Mourlon and Bayet published in 1901 at the ... [more ▼]

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using scientific data produced since the previous edition of Mourlon and Bayet published in 1901 at the scale of 1/40.000 by the "Commission Géologique de Belgique". [less ▲]

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See detailUne visite insolite au Parc National Henri Pittier (Vénézuela)
Vermeulen, Cédric ULiege; Balsacq, R.

in Parcs & Réserves (2004), 59(3), 24-27

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See detailPhase stability of Triphylite, LiFePO4, and the Phases of the Mason-Quensel-Sequence
Schmid-Beurmann, Peter ULiege; Moavenian, M.; Hatert, Frédéric ULiege

in Berichte der Deutschen Mineralogischen Gesellschaft : Beihefte zum European Journal of Mineralogy (2004), 16

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See detailSex in the media
Gratia, Jean-Pierre; Thiry, Marc ULiege

in Scientist (Philadelphia, Pa.) (2004), 18

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See detailL'excès pondéral et l'obésité chez l'enfant
Guillaume, Michèle ULiege; Burniat, W

in ONE (Ed.) Prévention et petite enfance : guide de médecine préventive du nourrisson et du jeune enfant (2004)

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See detailLandscape ecology: focus on spatio-temporal patterns.
Bogaert, Jan ULiege

Conference (2004)

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See detailThe fractal dimension as a measure of the quality of habitats.
Imre, A; Bogaert, Jan ULiege

in Acta Biotheoretica (2004), 52(1), 41-56

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See detailStrontium ranelate reduces the risk of vertebral fractures in postmenopausal women with osteopenia
Sawicki, A; Reginster, Jean-Yves ULiege; Roux, C et al

in Osteoporosis International (2004), 15(S1), 119-120

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See detailEnquête sur les "contes" de Voltaire (III)
Tilkin, Françoise ULiege

in Cahiers Voltaire : Revue Annuelle de la Société Voltaire (2004), 3

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See detailEffect of secondary schools on academic choices and on success in higher education
Pustjens, Heidi; Van De Gaer, Eva ULiege; Van Damme, Jan et al

in School Effectiveness & School Improvement (2004)

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See detailMeteor excitation and meteoroid abundances from quantitative spectroscopy
Jenniskens, P.; Laux, C. O.; Jehin, Emmanuel ULiege

in 35th COSPAR Scientific Assembly (2004)

Meteor spectroscopy provides both quantitative data on the excitation conditions in the meteor plasma, the progressive ablation of mineral species in the meteoroid, and the meteoroid's elemental ... [more ▼]

Meteor spectroscopy provides both quantitative data on the excitation conditions in the meteor plasma, the progressive ablation of mineral species in the meteoroid, and the meteoroid's elemental abundances for selected elements. The recent NASA and USAF sponsored Leonid Multi-Instrument Aircraft Campaign provided high-resolution spectra of relatively faint meteors using a slit-less cooled CCD spectrograph. Additional observations from ground and space extended the wavelength range from 250 to 1050 nm. We have measured excitation conditions in the meteor plasma from studies of meteoric air plasma emissions (N_2, N, O, O_2) and ablated metal atom line emissions (Fe). Results were compared to laboratory calibrated air plasma emission models and LTE models of metal atom line emissions. Further insight was provided by a spectrum recorded serendipitously at the European Southern Observatory VLT telescope, which provides the first spectral information over a cross-section of a meteor trail. We also searched for emissions from CN, H, and OH that may be ablation products of organic matter and mineral water contained in the meteoroid. We will present an overview of the information gathered to date and discuss the meteoric metal atom abundances (Fe, Mg, Si, Na, Ca, Mn, Al, Ni, Ti, Sc, Cr, Co, and V) measured for representative meteoroids. [less ▲]

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See detailLow-frequency coherent fluctuations in BOLD activity: a preliminary report
Garraux, Gaëtan ULiege; Guido, Nolte; Mark, Hallett

Poster (2004)

Background Low frequency (<0.1Hz) fluctuations originating from blood flow and oxygenation have been observed in the brain by different groups (Golanov et al. 1994; Biswal.et al. 1995). The goal of this ... [more ▼]

Background Low frequency (<0.1Hz) fluctuations originating from blood flow and oxygenation have been observed in the brain by different groups (Golanov et al. 1994; Biswal.et al. 1995). The goal of this study was to use BOLD fMRI to characterize coherent fluctuations in those low frequencies between spatially distant brain regions. Methods Thirteen right-handed subjects were studied using blocked-design BOLD fMRI at rest and as they performed sequential finger movements at a slow rate (~0.5 Hz) with their right hand. Serial acquisitions of EPI images were obtained at 3T using a single-shot 2D gradient-echo echo-planar imaging sequence. Data were processed and analyzed using standard procedures implemented in the statistical parametric mapping software (SPM2). Temporal profile of brain activity in 6 predefined regions (left S1M1, right S1M1, SMA, left thalamus, right cerebellum and CSF) were extracted on a subject-by-subject basis using the VOI tool in SPM2. After deconvolution (Gitelman et al. 2003), time series data representing movement and resting conditions were concatenated to create 2 within-condition time-series. After subtracting the mean over all epochs from each epoch, the (complex) coherency was calculated in the 5 lowest frequency bins with a frequency resolution of 1/17.5Hz (0, 0.05, 0.11, 0.17, 0.23 Hz). Real and imaginary parts of coherency, representing correlation and correlation of phase-shifted signals, respectively, were analyzed separately. Coherency was computed independently for each region pairs and each subject. Significance was defined as p<0.05 Bonferroni corrected for multiple comparisons. Results The main finding was the presence of coherent fluctuations in BOLD signal mainly in the lowest frequencies for (almost) all regions. The real part of coherency was equally pronounced during the movement and rest conditions. The only exception was a larger coherence during rest than during the task condition in the lowest frequencies between left and right S1M1. We could not find any significant imaginary part of coherency indicating that the time delays between dependent neural activations are negligible compared to the inverse frequencies under study. Partialling out the data in any of the regions did not have any significant impact on coherence map. Importantly, there was no evidence of coherent activity between any of the brain regions and CSF in any of the frequency bands. Discussion BOLD signal recorded during different behavioral steady-states showed very similar coherent fluctuations for all regions pairs studied mainly in the lowest frequencies. Those results are in good agreement with electrophysiological recordings in monkeys in which high coherence in band-limited power of local field potential signals have been reported at very low frequencies (<0.1Hz) (Leopold et al. 2003). In that study, coherence patterns were also highly similar under distinctly different behavioral states. Task-independent coherence in lower frequencies may be related to whole brain slow synchronous oscillations whose significance remains to be elucidated. References Golanov et al. (1994). Am J Physiol. 266; R204-214. Biswal et al. (1995). Magn Reson Med. 34; 537-541. Gitelman et al. (2003). NeuroImage. 19; 200-207. Leopold. et al. (2003). Cereb Cortex. 13; 422-433. [less ▲]

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