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See detailComparaison de différentes approches pour accepter un transfert de méthodes analytiques
Rozet, Eric ULg; Dewe, W.; Boulanger, Bruno ULg et al

Scientific conference (2006)

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See detailComparaison de différentes méthodes de détermination des teneurs en éléments majeurs et traces dans les sols.
Colinet, Gilles ULg; Baize, Denis; Delcarte, Emile et al

in Actes des 8emes JNES (2004, October)

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See detailComparaison de différents modèles d'éléments finis plans pour l'analyse linéaire des coques
Debongnie, Jean-François ULg; Carnoy, Eric

in ABSI, Elie; GLOWINSKI, Roland (Eds.) Méthodes numériques dans les Sciences de l'Ingénieur. Premier congrès international (1979)

This paper discusses the advantages and the drawbacks of different plane shell theories, as used for a linear analysis of curved shells.

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See detailComparaison de différents types de compostages de matières organiques diverses non valorisées par les paysans au Rwanda
Culot, Marc ULg; Mbonigaba Muhinda, Jean-Jacques; Maniraguha, J. D.

in Etudes Rwandaises : Série sciences exactes, naturelles et appliquées (2002), 5

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See detailComparaison de l’antibiorésistance vis-à-vis de la fluméquine et de l’enrofloxacine chez des souches d’Escherichia coli d’oiseaux de compagnie ou d’oiseaux de production
Marlier, Didier ULg

in Proceedings du 3ème colloque international de bactériologie francophone (2006)

Les résistances simples ou conjointes à la fluméquine et à l’enrofloxacine sont significativement plus rares chez les oiseaux de compagnie que chez ceux de production et semblent être dues à une sélection ... [more ▼]

Les résistances simples ou conjointes à la fluméquine et à l’enrofloxacine sont significativement plus rares chez les oiseaux de compagnie que chez ceux de production et semblent être dues à une sélection directe après traitement. Chez les oiseaux de production la fréquence des souches résistantes n’est influencée ni par l’âge, ni par la possibilité ou non de traiter les animaux (industrielle vs « bio-label »). Ces observations peuvent s’expliquer par le portage de souches résistantes dès la naissance des poussins; souches acquises au départ du cheptel reproducteur, ce dernier jouant un rôle disséminateur majeur lié à l’aspect typiquement pyramidal de la production avicole (faible nombre de parentaux qui produisent un grand nombre de volailles de production). [less ▲]

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See detailComparaison de l’effet de deux coumarines sur l’inhibition de l’invasion cellulaire in vitro et in vivo
Kempen, I.; Pochet, L.; Papapostolu, D. et al

Poster (2001, January 26)

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See detailComparaison de l'endoscopie d'effort sur le terrain et sur tapis roulant chez le cheval de selle
Frippiat, Thibault ULg; Art, Tatiana ULg; Van Erck-Westergen, Emmanuelle

in Pratique Vétérinaire Equine (2010), 42(166), 23-29

Endoscopy of the upper airway in horses is done either at rest or during exercise, i. e. dynamic endoscopy. The present study compared observations made on 11 saddle horses botte with dynamic treadmill ... [more ▼]

Endoscopy of the upper airway in horses is done either at rest or during exercise, i. e. dynamic endoscopy. The present study compared observations made on 11 saddle horses botte with dynamic treadmill and dynamic field endoscopy.The results acquired with botte methods during strenuous exercise led to similar conclusions in terms of diagnosis and prognosis in 8 out of 11 cases. For the 3 others, the overground endoscopy revealed an abnormality that was net observable with treadmill endoscopy [less ▲]

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See detailComparaison de l'état alaire de populations des Carabides de prairies du Brabant Wallon, du Nord du Grand Duché de Luxembourg et de l'Ardenne
Dufrêne, Marc ULg; Mercatoris, N.

in Annalen van de Koninklijke Belgische Vereniging voor Dierkunde (1989), 119

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See detailComparaison de l'évaluation des propriétés de transport tranpéritonéal au moyen d'un dialysat "conventionnel" par rapport à un nouveau dialysat dit "biocompatible"
Van Overmeire, Lionel ULg; Goffin, E.; Bovy, Philippe et al

in Néphrologie & Thérapeutique (2010, September 30), 6

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See detailComparaison de l'évolution de 2 litières biomaîtrisées à base de sciure ou de paille pour porcs à l'engraissement
Marlier, Didier ULg; Nicks, Baudouin ULg; Canart, Bernard et al

in Annales de Médecine Vétérinaire (1994), 138(1), 45-53

Two rooms of a pig house were used to study 2 deep litter systems where the animals were kept on a 50 cm thick layer of sawdust or of chopped straw (10 cm). Seven days before the arrival of the animals ... [more ▼]

Two rooms of a pig house were used to study 2 deep litter systems where the animals were kept on a 50 cm thick layer of sawdust or of chopped straw (10 cm). Seven days before the arrival of the animals, slurry and a microbial product used to stimulate the fermentation were added to the litters. Fifteen pigs on sawdust and seventien pigs on straw (floor spaces : 1.4 and 1.2 M2/pig) were fattened from 23.1 to 93.1 kg live weight. Excreta from pigs was dung into the bedding weekly and treated with the microbial product. This labour was considered as too hard in the straw room and was ended at day 105. No sawdust was added during the fattening period but straw was added 5 times to keep the pigs clean and to keep the temperature in the bedding higher than 30-degrees-C. The mean temperature in the sawdust bed was higher (38 +/- 5,4-degrees-C vs 35 +/- 6,7-degrees-C, p > 0,001) and more constant (mean daily variation 1,3 +/- 1,6 vs 2,2 +/- 2,4-degrees-C, p > 0,001) than the temperature recorded in the straw bed. The air temperature and the relative humidity were similar in the 2 rooms (21-degrees-C and 60 The concentrations of ammonia in the air were measured with Gastec tubes. The average ammonia concentrations recorded during the 7 days before the arrival of the animals (48 +/- 36 ppm vs 12 +/- 9,2 ppm) and those recorded after the eighth day (11 +/- 5,6 ppm vs 6,7 +/- 3,9 ppm) were significantly higher with the straw system compared with the sawdust system. The daily gains were not significantly different in the 2 rooms (552 g on average) and the food conversion ratios in the 2 rooms were 3,6 kg/kg (on sawdust) and 3,85 kg/kg (on straw). Carcasses were of equal quality. In conclusion, results were better with the sawdust bed than with the straw bed. The sawdust bed provided a higher temperature in the bedding and a lower ammonia concentration in the air. The routine weekly task of digging was easier in the sawdust bed and the bedding was used for a second batch. [less ▲]

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See detailComparaison de l'evolution des marqueurs biologiques du remodelage osseux apres six mois de traitement hormonal substitutif par 17 beta-estradiol cutane ou estrogenes sulfoconjugues equins et acetate de nomegestrol
Collette, Julien ULg; Viethel, P.; Dethor, M. et al

in Gynécologie Obstétrique & Fertilité (2003), 31(5), 434-41

OBJECTIVE: To compare changes in biochemical markers of bone turnover in postmenopausal women who received sequential discontinuous hormone replacement therapy (HRT) with either transdermal 17 beta ... [more ▼]

OBJECTIVE: To compare changes in biochemical markers of bone turnover in postmenopausal women who received sequential discontinuous hormone replacement therapy (HRT) with either transdermal 17 beta-estradiol gel (group 1) or oral equine sulfoconjugated estrogen (group 2), plus nomegestrol acetate. PATIENTS AND METHOD: Prospective, open, randomized, controlled trial, conducted on 3 parallel groups of 106 postmenopausal women. All treated groups received estrogen therapy for 25 consecutive days every month. The estrogen used was either 1.5 mg/day of transdermal 17 beta-estradiol gel (group 1) [N = 42, average age (AA) = 51.6 years, average duration of menopause (ADM = 21.5 months)], or 0.625 mg/day of oral equine sulfoconjugated estrogen (group 2) [N = 39, AA = 51.3 years, ADM = 16.8 months]. In all cases nomegestrol acetate 5 mg/day was added for 12 consecutive days every month. The control group comprised 25 patients, [AA = 53.4 years, ADM = 33.7 months]. Two bone resorption markers: urinary cross-linked N-telopeptide and C-telopeptide of type I collagen (U-NTX/Cr, U-CTX/Cr), and a bone formation marker: serum bone specific alkaline phosphatase activity were measured before and 6 months after treatment start. RESULTS: Significant decreases from baseline values were observed for the 3 biochemical markers in both treated groups compared with control (P < 0.001). There were no significant differences in changes between the 2 treated groups for the 3 biochemical markers. The mean percentage change in the 3 biochemical markers was: from -9.3 to -45.5% in group 1, from -20.5 to -39% in group 2, and from -3.3 to 2% in control group. In group 1, the mean percentage decreases in U-CTX reached optimal threshold of bone turnover change (-45%) which is considered by the International Osteoporosis Foundation as clinically relevant because it predicts an increase in BMD greater than 3% when treatment is maintained over a long term. DISCUSSION AND CONCLUSION: Both treated groups induced a significant comparable decrease of bone turnover markers after 6 months of intervention, compared with control. The group treated with cyclic administration of transdermal 17 beta-estradiol (1.5 mg/day) and nomegestrol acetate (5 mg/day) showed a bone resorption markers decrease corresponding to the threshold of clinical relevance described in the international literature and predictive of positive BMD response in long term. [less ▲]

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See detailComparaison de l'usage d'huiles d'origine végétale ou minérale pour la lubrification de chaines de tronconneuse.
Bieswal, Marc; Debouche, Charles ULg; van Belle, Laurent

in Silva Belgica (2000), 107(2), 18-21

Des études en laboratoire ont montré que les huiles végétales présentent un pouvoir lubrifiant supérieur aux huiles minérales dans le domaine de la lubrification limite (Kabuya 1995). Par ailleurs, des ... [more ▼]

Des études en laboratoire ont montré que les huiles végétales présentent un pouvoir lubrifiant supérieur aux huiles minérales dans le domaine de la lubrification limite (Kabuya 1995). Par ailleurs, des chiffres avancés dans la littérature ou par des fournisseurs de lubrifiants annoncent la possibilité de réduire la consommation de lubrifiant en passant à un lubrifiant à base d'huile végétale. Des chiffres de réduction d'usure sont aussi avancés par des constructeurs de tronçonneuses. L'essai décrit dans cet article n'a pas permis de confirmer ces réductions de consommation et de frottement. [less ▲]

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See detailComparaison de l'utilisation de sciure ou d'un mélange paille-sciure comme substrat de litière accumulée pour porcs charcutiers
Nicks, Baudouin ULg; Desiron, A.; Canart, B.

in Annales de Zootechnie (1998), 47(2), 107-116

Two similar rooms were used to keep pigs on deep litter, one room with pigs on sawdust (litter S) and the other with pigs on a mixture of straw and sawdust with 50% dry matter (DM) of each material ... [more ▼]

Two similar rooms were used to keep pigs on deep litter, one room with pigs on sawdust (litter S) and the other with pigs on a mixture of straw and sawdust with 50% dry matter (DM) of each material (litter PS). Three batches of 17 pigs were reared in each room over the 14-month period of experiment. The deep litters were started with a bedding of about 30 cm. Afterwards the amounts of litters used were adjusted to keep the pigs clean. Each week the litter S was manually aerated and manure incorporated in the litter. This work was not per formed with the litter PS. Both temperatures, relative humidities and ventilation rates were similar in the two rooms. The temperatures in the litters were continuously recorded. Ammonia concentrations were measured once a week using 8-h diffusion tubes. Electrochemical probes were occasionally used to measure the NH3 concentrations continuously, at l-h intervals, during 1-week periods. NO concentrations were measured dul-ing all the experimental period with electrochemical probes. At the end of the experiment the amounts of litter DM used per pig were of 32 kg with the litter S and 40 kg with the litter PS. The litter temperatures measured at 20 cm depth varied between 30 and 37 degrees C. Heat evaporated the dung water and the DM content of the composts produced staid above 50%. The amounts of compost produced per fattening pig were of 127 kg with the litter S and of 157 kg with the litter PS. Corresponding amounts of N in the composts were of 1.38 and 1.92 kg/pig, respectively. NH3 emission was lower from litter S than from litter PS but small increases of NH3 concentration until 50 ppm were observed during the work of aeration. Adding new litter decreased the emissions. NO emissions were only observed with the litter S, during the aeration period. Pig performance and carcass qualities were not affected by the litter mate. [less ▲]

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