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See detailComprehensive Two-Dimensional Gas Chromatography Time of Flight Mass Spectrometry (GCxGC-TOFMS) for Environmental Forensic Investigations in Developing Countries
de Vos, Jayne; Dixon, Roger; Vermeulen, Gerhard et al

in Chemosphere (2011), 82

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See detailComprehensive Two-Dimensional Gas Chromatography Time-of-Flight Mass
Patterson Jr; Focant, Jean-François ULg

Scientific conference (2003, June)

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See detailComprehensive two-dimensional gas chromatography with isotope dilution time-of-flight mass spectrometry for the measurement of dioxins and polychlorinated biphenyls in foodstuffs - Comparison with other methods
Focant, Jean-François ULg; Eppe, Gauthier ULg; Scippo, Marie-Louise ULg et al

in Journal of Chromatography. A (2005), 1086(1-2), 45-60

A comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC x GC-TOF-MS) experimental setup was tested for the measurement of seven 2,3,7,8-substituted polychlorinated dibenzo ... [more ▼]

A comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC x GC-TOF-MS) experimental setup was tested for the measurement of seven 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins (PCDDs), ten 2,3,7,8-substituted polychlorinated dibenzofurans (PCDFs), four non-ortho-polychlorinated biphenyls (PCBs), eight mono-ortho-PCBs, and six indicator PCBs (Aroclor 1260) in foodstuff samples. A 40 m RTX-500 (0.18 mm I.D., 0.10 mu m df) was used as the first dimension (D-1) and a 1.5 nn BPX-50 (0.10 mm I.D., 0.10 mu m df) as the second dimension (2 D). The GC x GC chromatographic separation was completed in 45 min. Quantification was performed using C-13-label isotope dilution (11)). Isotope ratios of the selected quantification ions were checked against theoretical values prior to peak assignment and quantification. The dynamic working range spanned three orders of magnitude. The lowest detectable amount of 2,3,7,8-TCDD was 0.2 pg. Fish, pork, and milk samples were considered. On a congener basis, the GC x GC-ID-TOF-MS method was compared to the reference GC-ID high resolution mass spectrometry (HRMS) method and to the alternative GC-ID tandem-in-time quadrupole ion storage mass spectrometry (QIST-MS/MS). PCB levels ranged from low picogram (pg) to low nanogram (ng) per gram of sample and data compared very well between the different methods. For all matrices, PCDD/Fs were at a low pg level (0.05-3 pg) on a fresh weight basis. Although congener profiles were accurately described, RSDs of GC x GC-ID-TOF-MS and GC-QIST-MS/MS were much higher than for GC-ID-HRMS, especially for low level pork and milk. On a toxic equivalent (TEQ) basis, all methods, including the dioxin-responsive chemically activated luciferase gene expression (DR-CALUX) assay, produced similar responses. A cost comparison is also presented. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

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See detailA comprehensive variability study of the enigmatic WN8 stars - Final results
Marchenko, S. V.; Moffat, A. F. J.; Eversberg, T. et al

in Monthly Notices of the Royal Astronomical Society (1998), 294

As a conclusion of our all-sky variability survey of the 'enigmatic' variable WN8 stars, we have carried out coordinated multisite photometric and spectroscopic observations of WN8 stars in 1989 and 1994 ... [more ▼]

As a conclusion of our all-sky variability survey of the 'enigmatic' variable WN8 stars, we have carried out coordinated multisite photometric and spectroscopic observations of WN8 stars in 1989 and 1994-1995. We confirm the leading role of the stellar core in restructuring the whole wind. This emerges as a statistical trend: the higher the level of the continuum (i.e., core) light variations, the higher the variability of the P Cygni edges of the optical emission lines. However, the form of the correlation between the light and profile variations is generally different for each individual star. The high level of activity of WN8 stars may be supported/induced by pulsational instability. [less ▲]

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See detailA comprehensive view of migraine pathophysiology
Gantenbein, A; Sándor, P; Riederer, F et al

in Fernandez-de-las-Penas, C; Chaitow, L; Schoenen, Jean (Eds.) Multidisciplinary Management of Migraine (2012)

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See detailComprendre et éviter le plagiat
Ramais, Thierry; Simons, Germain ULg; Delville, Michel ULg

Textual, factual or bibliographical database (2009)

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See detailComprendre et prévenir la violence à l'école : vers un référentiel critique des mesures actuelles de prévention et de lutte contre la violence scolaire
Munten, Jacqueline; Jardon, Dorothée; Mouvet, Bernadette ULg

in Point sur la Recherche en Education (Le) (2002), 22

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See detailComprendre l’art contemporain
Bawin, Julie ULg

Conference given outside the academic context (2011)

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See detailComprendre l'enseignement secondaire : Évolution, organisation, analyse
Beckers, Jacqueline ULg

Book published by De Boeck Université (1998)

Detailed reference viewed: 43 (4 ULg)
See detailComprendre l’environnement par l’histoire. Apprendre l’histoire par l’environnement
Jadoulle, Jean-Louis ULg

in D. BELAYEW, Ph. SOUTMANS, A. TIXHON et D. VAN DAM (Ed.) Education à la citoyenneté et à l’environnement (2008)

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See detailComprendre la gouvernance
Triplet, Patrick; Vermeulen, Cédric ULg

in Triplet, Patrick (Ed.) Manuel de gestion des aires protégées d'afrique de L'ouest (2009)

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See detailComprendre la logique des acteurs
Partoune, Christine ULg

Learning material (2010)

Cette fiche présente quatre outils articulés dans le but d’aider des acteurs à construire une vision commune d’un territoire : 1. l’audit patrimonial, qui sert à récolter des informations de base ; 2. la ... [more ▼]

Cette fiche présente quatre outils articulés dans le but d’aider des acteurs à construire une vision commune d’un territoire : 1. l’audit patrimonial, qui sert à récolter des informations de base ; 2. la matrice CAPE et ... 3. le tableau des interrelations, qui proposent une façon de traiter ces informations pour arriver à synchroniser les acteurs ; 3. le plan de concertation, dont la conduite est nourrie de l’analyse menée grâce aux trois autres outils. [less ▲]

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