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See detailComparative study of two diagnostic methods of bovine leukosis : hématology and immunodiffusion.
Mammerickx, Marc; Portetelle, Daniel ULg; Kettmann, Richard ULg et al

in Veterinary Microbiology (1976), 1

Detailed reference viewed: 4 (0 ULg)
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See detailComparative study of typical neuroleptics, clozapine and newly synthesized clozapine-analogues: correlations between neurochemistry and behaviour.
Bruhwyler, J.; Liégeois, Jean-François ULg; Chleide, E. et al

in Behavioural pharmacology (1992), 3(6), 567-579

While neuroleptic therapy with classical compounds has frequently been associated with extrapyramidal side effects, clozapine has revealed an interesting antipsychotic profile without producing any ... [more ▼]

While neuroleptic therapy with classical compounds has frequently been associated with extrapyramidal side effects, clozapine has revealed an interesting antipsychotic profile without producing any clearcut motor side effects. However, some adverse reactions remained that stimulated the search for improved antipsychotic agents. The aim of this study was to characterize the behavioural and neurochemical profiles of typical neuroleptics (chlorpromazine, haloperidol), clozapine, and four newly synthesized clozapine-analogues. Affinity for dopaminergic (D1,D2), serotonergic (5-HT(2)) and cholinergic (muscarinic) receptors were measured and the ratios of these different binding affinities were determined and correlated with the behavioural effects of the drugs in a complex temporal regulation task in the dog. The four clozapine-analogues showed most of the behavioural characteristics previously described for neuroleptics and their neurochemical profile, particularly their 5-HT(2)/D2 pKi ratio, was compatible with an atypical antipsychotic effect. Among these drugs, JL5 and JL13 showed a high degree of similarity with clozapine. Like clozapine, they did not induce catalepsy and stereotypy/hyperkinesia. Moreover, other motor effects were also reduced (ataxia, akinesia, dystony). and tremor and sialorrhea were completely absent with these two molecules. [less ▲]

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See detailComparative study of volatile secondary metabolite of Cistus libanotis during different process
Zidane, H.; Fauconnier, Marie-Laure ULg; Sindic, Marianne ULg et al

in Journal of Chemical and Pharmaceutical Research (2014), 6(8), 281-287

Chemical composition of the essential oils of Cistus libanotis from eastern Morocco (Tafoughalt and Jerrada) extracted from different season was analyzed by GC-MS and GC-FID. The hydro-distilled essential ... [more ▼]

Chemical composition of the essential oils of Cistus libanotis from eastern Morocco (Tafoughalt and Jerrada) extracted from different season was analyzed by GC-MS and GC-FID. The hydro-distilled essential oil content ranged from 0, 27 % to 0, 46%, the maximum amounts were observed in summer while minimum in winter for Tafoughalt, whereas the oil obtained from Jerrada had the highest yield (0, 61 %). The essential oils consisted of terpineol-4 as the most abundant component (18, 70 % - 24, 91 %), followed by γ-terpinene (9, 82 % - 12, 25 %), camphene (5, 86 % - 13, 58 %), sabinene (7, 86 % - 9, 89 %) and α-thujene (6, 92 % - 10, 12 %). Samples collected in all seasons were found to be richer in monoterpenes hydrocarbons (52, 68 % - 57, 59 %). None sesquiterpene hydrocarbons found in the oils from summer and autumn. Drying period of leaves at normal air laboratory and distillation time also affect the oil content and composition. There was variation in terpineol-4 content from 22, 23 % (4th day of drying) to 19, 27 % (29th day of drying), and from 35, 60 % (1 hour of distillation) to 24, 17 % (4 hours of distillation). It can be concluded that the harvesting season, period of drying and the time of distillation had an effect on the yield of essential oil and chemical composition of various compounds. [less ▲]

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See detailComparative study on sound production in different Holocentridae species
Parmentier, Eric ULg; Vandewalle, Pierre ULg; Brié, Christophe et al

in Frontiers in Zoology (2011), 8

Detailed reference viewed: 57 (8 ULg)
See detailA comparative study on the ecology of the black howler monkey living in limestone karst hills and in a riparian forest in Belize
Trolliet, Franck ULg; Evans, Kayley; Kowalzik, Barbara et al

Conference (2010, October 11)

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See detailComparative study on the enantioseparation of glutethimide using dual cyclodextrin systems and cyclodextrin modified MEKC in capillary electrophoresis
Abushoffa, Adel M.; Burjanadze, Naira; Blaschke, Gottfried et al

in Journal of Separation Science (2002), 25(1-2), 10-16

In order to critically evaluate the potential of dual cyclodextrin (CD) systems in CE, enantioseparation of the neutral chiral analyte glutethimide (GT) was performed using: a) charged CDs; b ... [more ▼]

In order to critically evaluate the potential of dual cyclodextrin (CD) systems in CE, enantioseparation of the neutral chiral analyte glutethimide (GT) was performed using: a) charged CDs; b) combinations of charged and neutral CDs (dual CD systems), and c) CD-modified micellar electrokinetic chromatography (CD-MECK). The results of this comparative study indicate that properly designed dual CD systems may in certain cases represent a valuable alternative to CD-MEKC and electrokinetic chromatography involving charged CDs for enantioseparation of neutral analytes. [less ▲]

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See detailA comparative study, by stimulation, of bull and cow evaluation methods
Leroy, Pascal ULg

in 32nd Annual Meeting of the European Association for Animal Production, Zagreb, 1981 (1981)

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See detailComparative titration of ginsenosides by different techniques in commercial ginseng products and callus cultures
Kevers, Claire ULg; Jacques, Philippe; Gaspar, Thomas ULg et al

in Journal of Chromatographic Science (2004), 42(10, Nov-Dec), 554-558

The ginsenoside content of different ginseng species (Panax ginseng, P. quinquefolium, and P. vietnamensis) from different sources (roots from field-grown plants or from in vitro cultures, cells from ... [more ▼]

The ginsenoside content of different ginseng species (Panax ginseng, P. quinquefolium, and P. vietnamensis) from different sources (roots from field-grown plants or from in vitro cultures, cells from solid calluses or from liquid cultures, commercial powders, and suspensions) is evaluated by means of a new high-performance thin-layer chromatography (HPTLC) technique combining an automatic TLC sampler and scanner. The results are compared with those obtained through more classical gross spectrometric and high-performance liquid chromatography (HPLC) techniques. HPTLC and HPLC allow the separation and estimation of the different ginsenosides. For this, HPTLC is faster and simpler than HPLC. Both techniques determine less amounts of ginsenosides than spectrophotometry, which displays overestimated values caused by light absorption by contaminating osides. In vitro cultured cells and roots contain the same ginsenosides as those produced by their mother plants, although at quite lower levels. The culture media also accumulates ginsenosides. [less ▲]

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See detailComparative toxicities of a wild Plant essential oil and blends of its major constituents on mortality and fecundity of spider mites (Acari: Tetranychidae)
Attia, Sabrina; Grissa, Kaouthar Lebdi; Ghrabi, Zeineb et al

in Lochynski, Stanislaw; Wawrzenczyk, Czeslaw (Eds.) 41th International Symposium on Essential Oils (ISEI 2010) (2010, September)

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See detailComparative toxicity of Deverra scoparia essential oil and blends of its major constituents against Tetranychus urticae Koch
Attia, Sabrine; Grissa, Kaouthar Lebdi; Lognay, Georges ULg et al

Poster (2010, October 14)

The phytophagous two-spotted spider mite Tetranychus urticae Koch is a ubiquitous species, present worlwide on a large variety of plant families. Since T. urticae resistance spread rapidly, biological ... [more ▼]

The phytophagous two-spotted spider mite Tetranychus urticae Koch is a ubiquitous species, present worlwide on a large variety of plant families. Since T. urticae resistance spread rapidly, biological control tactics are crucial to manage spider mite populations. In this respect, plant-derived essential oil products are a good alternative as they are, in general, considered as minimum-risk pesticides. In that context, laboratory experiments were conducted to assess the toxicity of essential oil of Deverra scoparia endemic plant to North Africa on females of the two spotted spider mite T. urticae (Koch). Essential oil was distillated from fresh leaves from D. scoparia and was sprayed on groups of adults females. The susceptibility of these females to D. scoparia essential oil was tested. A series of dilutions were used to bracket the dose-response range. Tests proved that female mortality increased with essential oil concentration with DL50 and DL90 values of 1.79 mg/l and 3.16 mg/l, respectively. The analysis of D. scoparia essential oil using GC-MS revealed presence of 10 major constituents: alpha-thujene, alpha-pinene, sabinene, myrcene, 3-carene, ocimene, terpinene-4-ol, pulegone, eugenol and beta-eudesmol. For a comprehensive evaluation of the potential of D. scoparia essential oil as acaricidal, individual blends activity of these constituents were tested against T. urticae female. Toxicity of blends of different components indicated significant differences among the active and inactive components, with the presence of all constituents necessary to have toxicity near to that of whole D. scoparia oil. The results showed that natural oil of D. scoparia and some of its constituents have potential for development as botanical acaricide, at least against T. urticae. [less ▲]

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See detailComparative Trophic Morphology in Eight Species of Damselfishes (Pomacentridae)
Frederich, Bruno ULg; Pilet, A.; Parmentier, Eric ULg et al

in Journal of Morphology (2008), 269(2), 175-88

Damselfishes show significant biodiversity in the coral reefs. To better understand such diversity, an ecomorphological approach was investigated in the trophic morphology of eight species of ... [more ▼]

Damselfishes show significant biodiversity in the coral reefs. To better understand such diversity, an ecomorphological approach was investigated in the trophic morphology of eight species of Pomacentridae (Chromis acares, C. margaritifer, Dascyllus aruanus, D. flavicaudus, Pomacentrus pavo, Plectroglyphidodon johnstonianus, Pl. lacrymatus and Stegastes nigricans) belonging to different trophic guilds (zooplankton, algal, coral polyp feeders and omnivores). Geometric morphometrics were used to quantify size and shape variations in four skeletal units: (1) neurocranium, (2) suspensorium and opercle, (3) mandible and (4) premaxilla. This method allowed us to reveal shape and size differences correlated to functional diversity both within and between trophic guilds. Among zooplanktivores, C. margaritifer, D. aruanus and D. flavicaudus have a high and long supraoccipital crest, short mandibles forming a small mouth and high suspensoria and opercles. These three species can be considered to be suction feeders. In the same guild, C. acares shows opposite characteristics (long and thin mandibles, lengthened neurocranium and suspensorium) and can be considered as a ram feeder. Among herbivores and corallivores, the two species of Plectroglyphidodon and S. nigricans can be considered as grazers. Differences in skeletal shape are mainly related to improving the robustness of some skeletal parts (broad hyomandibular, short and high mandibles). The shapes of P. pavo, which feeds largely on algae, strongly differ from that of the other three grazers exhibiting similar morphological characteristics to C. acares (e.g., long and shallow suspensorium, lengthened neurocranium). This highlights likely differences concerning cutting or scraping method. Finally, no strong correlations exist between size and shapes in the eight studied species. Size difference among species having a very similar shape could be viewed as a factor optimizing resource partitioning. [less ▲]

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See detailComparative ultrasonographic and morphologic appearance of femorotibial menisci in horses: a preliminary study
De Busscher, V.; Busoni, Valeria ULg; Schreder, A. et al

in Canifelis Hippos Proceedings (2007)

Detailed reference viewed: 17 (1 ULg)
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See detailComparative ultrastructural study of the effects of serum-free medium and dibutyryl-cyclic AMP on newborn rat astroblasts.
Moonen, Gustave ULg; Heinen, Ernst ULg; Goessens, Guy ULg

in Cell & Tissue Research (1976), 167(2), 221-7

Modifications of cell shape induced in cultured newborn rat astroblasts by serum deprivation or dibutyryladenosine 3'-5' monophosphate (dBcAMP) are described. Serum suppression modifies the adhesitivity ... [more ▼]

Modifications of cell shape induced in cultured newborn rat astroblasts by serum deprivation or dibutyryladenosine 3'-5' monophosphate (dBcAMP) are described. Serum suppression modifies the adhesitivity of the cells to the substrate, but this modification is not consistent with a true differentiation. The main ultrastructural feature of dBcAMP-treated astroblasts is the presence of an extensive system of 90 A microfilaments, while control cells are relatively devoid of these structures. [less ▲]

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See detailComparative validation of three water cooling coil models
Gendebien, Samuel ULg; Bertagnolio, Stéphane ULg; Lemort, Vincent ULg

in Proceedings of the 10th REHVA World Congress - Clima 2010 (2010, May)

Water cooling coils are widely used in common HVAC systems. Accurate and robust cooling coil simulation models are required to perform reliable calculations of building cooling needs. Many different ... [more ▼]

Water cooling coils are widely used in common HVAC systems. Accurate and robust cooling coil simulation models are required to perform reliable calculations of building cooling needs. Many different cooling coil simulation models were developed during the last decades. The most commonly used cooling coil models are presented and compared in terms of implementation in the first part of the paper. A simplified variable boundary model is presented and comparatively and empirically validated to two reference models. [less ▲]

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See detailA comparative, Randomized trial of Concentration-Controlled Sirolimus Combined With Reduced-Dose Tacrolimus or Standard-Dose Tacrolimus in Renal Allograft Recipients
Bechstein, W.O; Paczeck, L; Wramner, L et al

in Transplantation Proceedings (2013), 45

The clinical safety and efficacy of sirolimus plus reduced-dose tacrolimus was evaluated in de novo renal allograft recipients enrolled in a comparative, open-label study. Methods. One hundred twenty ... [more ▼]

The clinical safety and efficacy of sirolimus plus reduced-dose tacrolimus was evaluated in de novo renal allograft recipients enrolled in a comparative, open-label study. Methods. One hundred twenty-eight renal allograft recipients were randomly assigned (1:1) to receive reduced-dose tacrolimus plus sirolimus (rTAC) or standard-dose tacrolimus and sirolimus (sTAC) for 6 months. The primary efficacy endpoint was calculated creatinine clearance values at 6 months. Results. Demographic variables were similar between groups. At 6 months, mean ( standard deviation) calculated creatinine clearance was significantly improved in the rTAC group (63.8 vs 52.7 mL/min, P ¼ .005), although mean serum creatinine values were not significantly different. Patient survival (95.2% and 96.9%) and graft survival (93.7% and 98.5%) were similar between the rTAC and sTAC groups, respectively. Acute rejection rates were 17.5% with rTAC and 7.7% with sTAC (P ¼ .095). Conclusions. The rTAC regimen provided effective immunosuppression and was associated with improved creatinine clearance. Adequate immunosuppressant exposure must be achieved in the early postoperative period to minimize the risk of acute rejection. [less ▲]

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See detailCOMPARATIVE-STUDY OF DIFFERENT BAMBOO PULPS
TSHIAMALA, T.; FRAIPONT, L.; Paquot, Michel ULg et al

in Holzforschung : International Journal of the Biology, Chemistry, Physics, & Technology of Wood (1984), 38(5), 281-288

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See detailComparator selection for RPC with many labels
Hiard, Samuel ULg; Geurts, Pierre ULg; Wehenkel, Louis ULg

in ECAI 2012 : 20th European Conference on Artificial Intelligence : 27-31 August 2012, Montpellier, France (2012, August)

The Ranking by Pairwise Comparison algorithm (RPC) is a well established label ranking method. However, its complexity is of O(N²) in the number N of labels. We present algorithms for selection, before ... [more ▼]

The Ranking by Pairwise Comparison algorithm (RPC) is a well established label ranking method. However, its complexity is of O(N²) in the number N of labels. We present algorithms for selection, before model construction, a subset of comparators of size O(N), to reduce the computational complexity without loss in accuracy. [less ▲]

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See detailCompared anatomy of the locomotor system : a website
Noble, Prisca ULg; Collin, Bernard ULg; Denoix, Jean-Marie

in Anatomia, Histologia, Embryologia (2010, July 28), 39(4), 275

Introduction: This website is a multi-dimensional approach of the locomotor system in domestic animals. The first objective of this anatomical presentation is to establish relation between systemic ... [more ▼]

Introduction: This website is a multi-dimensional approach of the locomotor system in domestic animals. The first objective of this anatomical presentation is to establish relation between systemic anatomy and topographic anatomy. The second objective is to teach a practical anatomy that must be adapted to the clinician work. Methods: From the dissection of equine, bovine and canine specimens, osteology, arthrology and myology (OAM) were photographed and filmed. All photos and movies were captioned and designed using Fireworks (Adobe CS4, USA), AVS video converter 6 (MediaTechnologies Ltd, UK) and Divx Author (Divx Inc, USA). The website was designed using Dreamweaver (Adobe CS4, USA). Results: Compared anatomy site consists on dichotomously organised web pages. Each page is transversally and vertically connected with others, and always surmounted by a navigation barr. From the navigation barr we can travel through different drop-down menus (DDM). The first DDM corresponds to the lesson menu (it sends to general OAM) ; the second and third DDMs correspond to the equine picture menu and the bovine/canine picture menu (from them we can navigate in OAM per species and per system using clickable captioned photos and movies, the functional aspects being explained). For practical reasons, equine species is used as animal reference. Indeed only anatomical differences of the other species are detailed and compared. Finally the button Index corresponds to the surgeon view (all of the body is transversally cut, the clickable anatomical structures are sent back to their specific topic web page). Conclusions: Because of the numerous photos and movies, the three-dimensional view is better understood. Because of the transversal and vertical links, the navigation, in whatever level per species or per system or per anatomical cut, strengthens the cognitive process. This website is a fabulous multi-scale tool to teach and to learn the veterinary anatomy. [less ▲]

Detailed reference viewed: 119 (7 ULg)