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 detailCrude oil bioremediation in sub-Antarctic intertidal sediments: chemistry and toxicity of oiled residues
Pelletier, Emilien; Delille, Daniel; Delille, Bruno ULiege

in Marine Environmental Research (2004), 57(4), 311-327

The effectiveness of fertilizers for crude oil bioremediation in sub-Antarctic intertidal sediments was tested over a one-year period in a series of ten (10) experimental enclosures. Chemical, microbial ... [more ▼]

The effectiveness of fertilizers for crude oil bioremediation in sub-Antarctic intertidal sediments was tested over a one-year period in a series of ten (10) experimental enclosures. Chemical, microbial and toxicological parameters demonstrated the effectiveness of various fertilizers in a pristine environment where hydrocarbon degrading bacteria (HDB) had not been stimulated by previous accidental spills or human activities. The low temperature of seawater (3-4 degreesC) had no obvious effects on the HDB community and the bioremediation process. Over 90% of n-alkanes were degraded in the first six months and most light aromatics (2-3 rings) disappeared during the first year of observation. The toxicity of oiled residues (Microtox(R) SP) was significantly reduced in the first 6 months of the process, but it increased again in the last months of the experiment. One of the fertilizers containing fishbone compost enriched with urea, inorganic phosphorus and a lipidic surfactant reduced significantly the toxicity of oil residues in the last 3 months of the experiment. Interstitial waters collected below the oil slicks during the remediation showed no toxicity, and even stimulated Vibrio fischeri. When comparing all fertilizers to the control plots, a good correlation (r(2) = 0.82) was found between the growth rate of HDB and the degradation rate of n-alkanes in the first 90 days of the experiment only indicating that fertilizers were efficient for at least 3 months but their beneficial effects were lost after 6 months. (C) 2003 Elsevier Ltd. All rights reserved. [less ▲]

Detailed reference viewed: 27 (1 ULiège)
Full Text
See detailCRUE DU GAZ CARBONIQUE DANS L'AIR DES GROTTES
Godissart, Jean; Ek, Camille ULiege

in EcoKarst (2009)

Carbone dioxide in cave air is strongly increasing for at least forty years.

Detailed reference viewed: 186 (46 ULiège)
Full Text
Peer Reviewed
See detailCrues, travaux d'aménagement, options futures et modélisations dynamiques
Lejeune, André ULiege; Pirotton, Michel ULiege

in Voies navigables intérieures et prévention des inondations (1995)

Detailed reference viewed: 16 (2 ULiège)
Full Text
Peer Reviewed
See detailCrural artery bypass with the autogenous greater saphenous vein
Van Damme, Hendrik ULiege; Zhang, Lihong ULiege; Baguet, E. et al

in European Journal of Vascular and Endovascular Surgery : The Official Journal of the European Society for Vascular Surgery (2003), 26(6), 635-642

Objective. To evaluate the long-term outcome of greater saphenous vein (GSV) infrapopliteal revascularisation in a single centre over a 10 year period. Material and methods. Fourty-one variables relating ... [more ▼]

Objective. To evaluate the long-term outcome of greater saphenous vein (GSV) infrapopliteal revascularisation in a single centre over a 10 year period. Material and methods. Fourty-one variables relating to a consecutive series of 90 crural artery GSV(76% in situ) bypasses in 81 patients (1990-2000) were analysed. The mean age of the 47 men and 34 women was 70 years. Limb-threatening ischaemia was present in 96% of cases, claudication in four patients. In 18 patients, surgery was 'redo'. Results. The perioperative mortality was 3% (n = 3). Patient survival was 54% at 4 years. Independent risk factors affecting survival were chronic renal insufficiency (p = 0.04), hypertension (p = 0.02), and ischaemic heart disease (p = 0.01). Four bypasses thrombosed within 30 days. Three of them could be successfully reopened. Mean follow-up was 39 months. The primary patency rate at 4 years was 80%. Chronic renal insufficiency revealed to be the single independent risk factor for graft thrombosis (p = 0.03, RR = 12.4). The 4-year limb salvage rate was 88%. No independent risk factor affecting the limb salvage could be identified. Conclusion. Crural artery revascularisation is a valuable option for the management of limb threatening infrapopliteal arterial occlusive disease. [less ▲]

Detailed reference viewed: 32 (0 ULiège)
Full Text
Peer Reviewed
See detailCrural or pedal artery revascularisation for limb salvage: is it justified
Van Damme, Hendrik ULiege

in Acta Chirurgica Belgica (2004), 104(2), 148-157

With the ageing of population, the incidence of limb-threatening ischemia increases. In chronic critical limb ischemia, peripheral arterial occlusive disease almost always involves infrainguinal and ... [more ▼]

With the ageing of population, the incidence of limb-threatening ischemia increases. In chronic critical limb ischemia, peripheral arterial occlusive disease almost always involves infrainguinal and infragenicular vessels. Fortunately, recent advances in vascular surgery made arterial reconstruction of crural and pedal vessels possible. Should crural or pedal bypass surgery be offered to these frail, polyvascular patients, or is primary amputation a preferable treatment option in case of advanced limb-threatening ischemia? In order to answer this controversial question, the author analysed recent literature data on the feasibility and durability of infrapopliteal bypasses. The quality of life was also considered as an outcome measure. Finally, the cost-effectiveness of both treatment modalities (limb-saving distal bypass versus primary amputation) was assessed. [less ▲]

Detailed reference viewed: 39 (0 ULiège)
Full Text
Peer Reviewed
See detailThe crustacean scavenger guild in Antarctic shelf, bathyal and abyssal communities
De Broyer, Claude; Nyssen, Fabienne ULiege; Dauby, Patrick ULiege

in Deep-Sea Research Part II, Topical Studies in Oceanography (2004), 51(14-16), 1733-1752

Peracarid crustaceans form a significant part of the macrobenthic community that is responsible for scavenging on large food falls onto the sea floor. Although several studies are available about ... [more ▼]

Peracarid crustaceans form a significant part of the macrobenthic community that is responsible for scavenging on large food falls onto the sea floor. Although several studies are available about scavengers from tropical and temperate seas, very little information has been published about such species living in Antarctic waters, particularly at greater depths. The present paper is based on a collection of 31 baited trap sets deployed in the Weddell Sea, Scotia Sea, and off the South Shetland Islands, and presents results on the geographical and bathymetric distribution of the different taxa and on the eco-functional role of scavengers. <br /> <br />Some 68,000 peracarid crustaceans from 62 species were collected. About 98% of individuals belonged to the amphipod superfamily Lysianassoidea, and 2% to the isopod family Cirolanidae. Of these species, 31, including 26 lysianassoids (1400 individuals), were collected deeper than 1000 m. <br /> <br />High species richness was discerned for the eastern Weddell Sea shelf compared with other Antarctic areas. The Antarctic slope also seems to be richer in species than other areas investigated in the world, while in the abyss, scavenger species richness appears to be lower in Antarctica. A richness gradient was thus observed from the shelf to the deep. For amphipods, a number of species extend their distribution from the shelf to the slope and only one to the abyssal zone. <br /> <br />Amphipod species showed degrees of adaptation to necrophagy. The functional adaptations of the mandible and the storage function of the gut are discussed. Feeding experiments conducted on lysianassoid species collected at great depths and maintained in aquaria showed a mean feeding rate of about 1.4–4.1% dry body weight day−1, which is consistent with data obtained from other species. [less ▲]

Detailed reference viewed: 98 (7 ULiège)
Full Text
Peer Reviewed
See detailThe crustal tongue melting model and the origin of massive anorthosites
Duchesne, Jean-Clair ULiege; Liégeois, Jean-Paul ULiege; Vander Auwera, Jacqueline ULiege et al

in Terra Nova (1999), 11

Recent detailed field studies in several anorthosite complexes have shown that anorthosites are frequently linked with weakness zones in the crust which favour their emplacement at mid-crust levels ... [more ▼]

Recent detailed field studies in several anorthosite complexes have shown that anorthosites are frequently linked with weakness zones in the crust which favour their emplacement at mid-crust levels. Recent experimental data have also shown that the parent magma compositions of various anorthosite massifs lie on thermal highs in the relevant phase diagrams, indicating that these magmas cannot be derived by fractionation of peridotitic mantle melts but rather are produced by melting of gabbronoritic sources. In the Sveconorwegian province terrane boundaries have been traced in deep seismic profiles to Moho offsets or to tongues of lower crustal material underthrust to depths of 40-50 km. We therefore suggest that the parent magmas of anorthosite massifs are produced by melting of gabbronoritic rocks from the lower crust that had been thrust into the mantle by collision of terranes. [less ▲]

Detailed reference viewed: 48 (5 ULiège)
Full Text
See detailCryo-optical test of the PLANCK reflectors
Roose, Stéphane ULiege; Cucchiaro, Antonio ULiege

Conference (2006, March 20)

Detailed reference viewed: 8 (4 ULiège)
Full Text
See detailCryo-optical testing of large aspheric reflectors operating in the sub mm range
Roose, Stéphane ULiege; Houbrechts, Yvette ULiege; Mazzoli, Alexandra ULiege et al

in Zhang, Y.; Jiang, W.; Cho, M. (Eds.) Proceedings of the 2nd SPIE symposium on Advanced Optical Manufacturing and Testing Technologies (2005, August)

The cryo-optical testing of the PLANCK primary reflector (elliptical off-axis CFRP reflector of 1550 mm x 1890 mm) is one of the major issue in the payload development program. It is requested to measure ... [more ▼]

The cryo-optical testing of the PLANCK primary reflector (elliptical off-axis CFRP reflector of 1550 mm x 1890 mm) is one of the major issue in the payload development program. It is requested to measure the changes of the Surface Figure Error (SFE) with respect to the best ellipsoid, between 293 K and 50 K, with a 1 μm RMS accuracy. To achieve this, Infra Red interferometry has been used and a dedicated thermo mechanical set-up has been constructed. This paper summarises the test activities, the test methods and results on the PLANCK Primary Reflector - Flight Model (PRFM) achieved in FOCAL 6.5 at Centre Spatial de Liege (CSL). Here, the Wave Front Error (WFE) will be considered, the SFE can be derived from the WFE measurement. After a brief introduction, the first part deals with the general test description. The thermo-elastic deformations will be addressed: the surface deformation in the medium frequency range (spatial wavelength down to 60 mm) and core-cell dimpling. [less ▲]

Detailed reference viewed: 35 (4 ULiège)
See detailCryogenic and Thermal Control for Vacuum Facilities Development in KARI
Guiot, Marc ULiege; Jamotton, Pierre ULiege; Grodent, Christophe ULiege et al

in CURRAN (Ed.) 26th Aerospace Testing Seminar 2011: Los Angeles, California, USA, 29 - 31 March 2011 (2011, March 29)

Detailed reference viewed: 23 (4 ULiège)
See detailCryogenic Zone Compression for the Measurement of Dioxins
Focant, Jean-François ULiege; Patterson Jr

Scientific conference (2010, April)

Detailed reference viewed: 15 (1 ULiège)
Full Text
Peer Reviewed
See detailCryogenic Zone Compression for the Measurement of Dioxins in Human Serum at Attogram Level by GCxGC-IDHRMS.
Patterson Jr; Welch; Turner et al

Conference (2008, June)

Detailed reference viewed: 6 (1 ULiège)
Full Text
Peer Reviewed
See detailCryogenic zone compression for the measurement of dioxins in human serum by isotope dilution at the attogram level using modulated gas chromatography coupled to high resolution magnetic sector mass spectrometry.
Patterson, Donald G.; Welch, Suzan; Turner, Wayman et al

in Journal of Chromatography. A (2011), 1218

Detailed reference viewed: 110 (21 ULiège)
Full Text
Peer Reviewed
See detailCryogenic zone compression GC-HRTOFMS for the measurement of PCB-153 and DDE in 20 mL serum samples
L'homme, Benjamin; Focant, Jean-François ULiege

in Analytical Methods (2016), 8

Detailed reference viewed: 10 (0 ULiège)
Peer Reviewed
See detailCryopréservation d’ovocytes et d’embryons par congélation ou vitrification dans le cadre de l’assistance médicale à la procréation
Vanderzwalmen, Pierre ULiege; Ectors, Fabien ULiege; Papras, Y et al

in Poncelet, Christophe; Sifer, Christophe (Eds.) Physiologie, pathologie et thérapie de la reproduction chez l’humain (2011)

Detailed reference viewed: 87 (9 ULiège)
Full Text
Peer Reviewed
See detailCryopreservation des embryons humains par vitrification.
Vanderzwalmen, Pierre ULiege; Zech, Nicolas; Greindl, A.-J. et al

in Gynécologie Obstétrique & Fertilité (2006), 34(9), 760-9

Vitrification is a cryopreservation strategy where cells are converted into a glass-like amorphous solid which is free of any crystalline structure. Such process is achieved by a combination of high ... [more ▼]

Vitrification is a cryopreservation strategy where cells are converted into a glass-like amorphous solid which is free of any crystalline structure. Such process is achieved by a combination of high concentration of cryoprotectant and an extremely high cooling rate. In the last years, survival rates of up to 80% after thawing and pregnancy rates of almost 30% could be achieved after transfer of vitrified embryos at the zygote, cleavage, morula and blastocyst stages. Also deliveries of healthy babies have been reported numerous times. To this day, a limited interest in this technique can be noted. The explanation may lye in the apprehension of many ART units regarding exposure of embryos to high concentrations of cryoprotectants and storage in non sterile conditions. The aim of the first part of this article, is to analyse if such fears are justified on the basis that vitrification mimics conditions already in use for many years in slow-cooling procedures where cells are plunged into liquid nitrogen at around -30 degrees C and secondly since storage of embryos are now possible in high aseptic conditions. In the second part, results on survival after thawing, pregnancy rates and baby take home rates of vitrified embryos will be presented and the problems associated with vitrification of blastocysts will be discussed. [less ▲]

Detailed reference viewed: 32 (3 ULiège)