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See detailDétermination en mode maillé du champ d’intervisibilité dans un modèle numérique de terrain
Donnay, Jean-Paul ULg

in Cartographica (1992), 29(Autumn/Winter), 75-82

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See detailDétermination en mode maillé du champ d’intervisibilité dans un modèle numérique de terrain
Donnay, Jean-Paul ULg

in Cartographica (1992), 29(3-4), 75-82

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See detailDétermination et cartographie des micro-habitats lotiques : Une approche géomorphologique
Hallot, Eric ULg; Houbrechts, Geoffrey ULg; Verniers, Gisèles et al

Poster (2007)

Lors du suivi d’aménagement ou de restauration de cours d’eau, l’analyse des micro-habitats s’avère un élément important. Leur caractérisation et leur quantification permet la comparaison avec d’autres ... [more ▼]

Lors du suivi d’aménagement ou de restauration de cours d’eau, l’analyse des micro-habitats s’avère un élément important. Leur caractérisation et leur quantification permet la comparaison avec d’autres sites témoins et de suivre leur évolution dans le temps. Une carte des micro-habitats est indispensable à la compréhension d’indices biologiques en établissant notamment une relation entre la diversification du milieu (donc des micros-habitats) et la diversité des macro-invertébrés benthiques. Cette cartographie est obtenue en croisant, grâce à un logiciel SIG, deux couches d’information, la bathymétrie et le substrat. La bathymétrie est obtenue par soustraction du MNT du fond du lit et du MNA du plan d’eau à l’étiage. Le substrat est obtenu par observation de terrain en utilisant une clé de détermination basée sur les grandes classes granulométriques du substrat et la granulométrie des éléments intercalaires. Ces deux couches d’information sont ensuite discrétisées chacune en 4 classes principales afin d’obtenir 16 types théoriques pour lesquels la superficie et la répartition peuvent être étudiés à partir d’outils SIG classiques. La méthode proposée, bien qu’aisée à mettre en œuvre, nécessite cependant une certaine expertise notamment lors de la détermination des classes du substrat. La précision du MNT du fond du lit définira quant à elle, la précision finale de la carte. Nous présentons ici deux exemples. Le premier, réalisé sur l’Ourthe Occidentale à Moircy, a permis la comparaison entre un site réaménagé et un site témoin. Le second, sur la Semois Lorraine à Sivry, a été effectué afin d’étudier l’évolution de la recolonisation par les macro- invertébrés benthiques d’un secteur réaménagé mais également de définir très précisément l’emplacement de leur échantillonnage afin d’assurer une répartition la plus représentative possible. [less ▲]

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See detail« Détermination et Liberté »
Cormann, Grégory ULg

in Noudelmann, François; Philippe, Gilles (Eds.) Dictionnaire Sartre (2005)

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See detailDétermination et production du starter du Mbannick, lait fermenté du Sénégal.
Cornelius, C.; Roblain, D.; Gningue, P. et al

Conference (1994, May)

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See detailDétermination expérimentale de la résistance au feu – Partie 2 – La norme ISO 17025 comme support de la qualité
Dumont, Fabien ULg

Conference given outside the academic context (2009)

La norme ISO 17025 établit les exigences générales concernant la compétence des laboratoires d'étalonnage et d'essai. En illustration de cette norme, ce module présente les démarches - mises en oeuvre au ... [more ▼]

La norme ISO 17025 établit les exigences générales concernant la compétence des laboratoires d'étalonnage et d'essai. En illustration de cette norme, ce module présente les démarches - mises en oeuvre au Laboratoire d'Essai au Feu de l'ULg - spécifiques aux exigences destinées à assurer la qualité des essais et l'exactitude des résultats. [less ▲]

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See detaildetermination methods].; Le selenium dans la nature.
Lognay, Georges ULg

in Annales de Gembloux (1981), 87(1),

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See detailDétermination objective de l’hétérogénéité de la classe et variation des réactions à la prestation
Cloes, Marc ULg; Delfosse, Catherine ULg; Piéron, Maurice

in Revue de l'Education Physique (1989), 29(2), 61-70

Dans l'enseignement général et dans l'enseignement des activités physiques, le responsable pédagogique s'adresse à un groupe d'élèves dont les caractéristiques individuelles les diffèrent parfois ... [more ▼]

Dans l'enseignement général et dans l'enseignement des activités physiques, le responsable pédagogique s'adresse à un groupe d'élèves dont les caractéristiques individuelles les diffèrent parfois fortement. Les différences concernent notamment le niveau d'aptitude physique, cognitif et affectif des apprenants. Depuis plusieurs années, plusieurs chercheurs se sont intéressés à la question de savoir si les enseignants modifiaient leurs comportements lorsqu'ils s'adressent à un type d'élèves ou à l'autre. [less ▲]

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See detailDetermination of 3-tert.butylamino-1,2-propanediol enantiomers by LC-MS-MS
Toussaint, B.; Streel, B.; Ceccato, Attilio ULg et al

Poster (2000)

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See detailDetermination of 4-aminophenol in a pharmaceutical formulation using Surface Enhanced Raman scattering: from development to method validation
De Bleye, Charlotte ULg; Dumont, Elodie ULg; Rozet, Eric ULg et al

in Talanta (2013), 116

A Surface Enhanced Raman Scattering (SERS) method able to quantify 4-aminophenol in a pharmaceutical formulation based on acetaminophen, also called paracetamol, was developed and, for the first time ... [more ▼]

A Surface Enhanced Raman Scattering (SERS) method able to quantify 4-aminophenol in a pharmaceutical formulation based on acetaminophen, also called paracetamol, was developed and, for the first time, successfully validated. In this context, silver nanoparticles were synthesized according to the method described by Lee-Meisel and used as SERS substrate. The repeatability of the silver colloid synthesis was tested using different methods to characterise the size and the zeta potential of silver nanoparticles freshly synthesized. To optimize the SERS samples preparation, a design of experiments implicating concentrations of citrate-reduced silver nanoparticles and aggregating agent was performed in order to maximize the Raman signal enhancement. Finally, an approach based on tolerance intervals and accuracy profiles was applied in order to thoroughly validate the method in a range of concentrations comprised from 3 to 15 µg mL-1 using normalized band intensities. The standard addition method was selected as method calibration. Therefore, measurements were carried out on 4-aminophenol spiked solutions of the pharmaceutical formulation. Despite the well-known stability and reproducibility problems of SERS, the validation was performed using two operators and 5 batches of nanoparticles, one for each validation day. [less ▲]

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See detailDetermination of a coalescence parameter from batch-settling experiments
Henschke, M; Schlieper, L; Pfennig, Andreas ULg

in Chemical Engineering Journal (2002), 85((2-3)), 369-378

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See detailDetermination of a gravity and shock score for prognosis in equine surgical colic
Grulke, Sigrid ULg; Olle, E.; Detilleux, Johann ULg et al

in Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine (2001), 48(8), 465-73

A retrospective study evaluated 200 surgical colic cases. A gravity score (GS) based on four clinical parameters estimating intestinal obstruction (rectal palpation, borborygmi, abdominal distension, pain ... [more ▼]

A retrospective study evaluated 200 surgical colic cases. A gravity score (GS) based on four clinical parameters estimating intestinal obstruction (rectal palpation, borborygmi, abdominal distension, pain) and classified into three categories was established and tested to determine if it could evaluate prognosis. A shock score (SS) based on six parameters was also attributed to each case. The overall survival rate was 54%. The statistical analysis showed a significant (P < 0.01) difference in the survival rate in the different categories of the GS, as well as in the categories of the SS. A multivariate logistic regression model showed that horses with GS 3 are 10.6 times more likely to die than those with GS 1. A model combining the two scores showed an odds ratio of 7.1 for GS 3 versus GS 1, and for SS 3 versus SS 1, the odds ratio was 7.2. [less ▲]

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See detailDetermination of a Suitable Protocol for Indigenous Oilseed Cucurbits Plant Regeneration
Gnamien, Yah Gwladys; Zoro Bi, I. A.; Djè, Y. et al

in Tropicultura (2010), 28(4), 217-225

The present work was carried out to establish rapid in vitro propagation of the indigenous oilseed Citrullus lanatus. Efficiency of 3 protocols for seed decontamination was investigated. High level of ... [more ▼]

The present work was carried out to establish rapid in vitro propagation of the indigenous oilseed Citrullus lanatus. Efficiency of 3 protocols for seed decontamination was investigated. High level of seed sterilization was obtained after removing seed coat and soaking the seeds in 1.6 % sodium hypochlorite with a drop of Tween 20. Shoot tips, single node and cotyledon explants of 3 morphotypes have been screened for adventitious shoot formation in tissue culture. Best response in termis of multiple shoot induction was obtained from cotyledon proximal part with hypocotyl segmenet on Murashige and Skoog medium supplemented with 1 mg/l 6-Benzylaminopurine, 30 g/l sucrose and 8 g/l agar. After 3 weeks of culture, 90% of cotyledon proximal parts induced shoot. An average of 12.6 shoots per explants and a mean shoot length of 8 mm were obtained after multiplication stage. Shoot induction appeared to be strongly influenced by genotype and explant type. The percentage of shoot induction from cotyledon proximal parts ranged from 23.3% to 64.0% according to the genotype. Efficient rooting was achieved on half-solid MS medium containing 0.1 mg/l 1-Naphthaleneactic acid or without growth regulator. Acclimatised plantlets were transferred to greenhouse where they grew and flowered like seeded plantlets. [less ▲]

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See detailDetermination of absolute molecular weight of bioactive polycations
Plotnikova, Evgeniya ULg; Sevrin, Chantal ULg; Claes, Nicolas et al

Poster (2015)

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See detailDetermination of Absolute Strengths of N2 Quadrupole Lines From High-Resolution Ground-based IR Solar Observations
Demoulin, Philippe ULg; Farmer, C.B.; Rinsland, C.P. et al

in Journal of Geophysical Research (1991), 96(D7), 13003-13008

High-resolution, high signal-to-noise ratio, solar absorption spectra recorded with a Fourier transform spectrometer at the International Scientific Station of the Jungfraujoch, Switzerland, have been ... [more ▼]

High-resolution, high signal-to-noise ratio, solar absorption spectra recorded with a Fourier transform spectrometer at the International Scientific Station of the Jungfraujoch, Switzerland, have been analyzed to determine the strengths of several lines belonging to the S branch of the N2 (1-0) electric quadrupole vibration-rotation band centered at 2329.9168 cm-1. The method which was applied here was based on equivalent width measurements of lines observed over a broad range of air masses; extrapolation of these measurements to zero air mass gave the line strengths for the transitions S7 to S10, independent of half widths, an ambiguity unavoidable with the use of curve-fitting techniques. The resulting absolute accuracies of the line strengths derived here, estimated to be better than +-2.5% for S8, +-2.6% for S10, +-3.4% for S9, and +-5.1% for S7, are due largely to the high quality and quantity of the spectra retained in this analysis and the accuracy with which the observation conditions are known. An important application of the improved values for these N2 transitions, which have low initial ground state energies, is the direct determination of the line-of-sight atmospheric air masses associated with remotely sensed infrared spectroscopic observations. Positions of the N2 transitions studied here have further been redetermined with an absolute accuracy better than 0.0002 cm-1. [less ▲]

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See detailDetermination of acidic and basic drugs by capillary zone electrophoresis
Crommen, Jacques ULg; Bechet, I.; Fillet, Marianne ULg et al

Conference (1994)

Detailed reference viewed: 10 (1 ULg)