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See detailMagnetic susceptibility evolution and sedimentary environments on carbonate platform sediments and atolls, comparison of the Frasnian from Belgium and Alberta, Canada
Da Silva, Anne-Christine ULg; Potma, Ken; Weissenberger, John A. W. et al

in Sedimentary Geology (2009), 214

Magnetic susceptibility (MS) measurements on carbonate rocks are considered as a proxy for impurities delivered to the carbonate environments. In the absence of strong climatic or tectonic variations ... [more ▼]

Magnetic susceptibility (MS) measurements on carbonate rocks are considered as a proxy for impurities delivered to the carbonate environments. In the absence of strong climatic or tectonic variations, bulk MS values have been linked to sea level variations, because sea-level fall increases clastic supply and therefore increases magnetic mineral deposition. In this paper we explore the relationship between the average magnitude of bulk MS, with shallowing-up sequences and facies evolution in different Devonian carbonate complexes. Similarities and differences between these parameters have been scrutinized in carbonate attached platform and detached platforms (mounds and/or atolls) from Belgium and Canada. In the carbonate attached platforms from Belgium and Canada, the MS patterns are directly related to depositional environment. Mean MS values increase from the most distal towards the most proximal facies and towards the top of the majority of fourth-order shallowing-up sequences. These trends are in agreement with theoretical background (MS increases with regression). In the Belgian detached platform, the average MS pattern generally shows an opposite behaviour of that observed in the attached carbonate platforms. Average MS decreases towards the most proximal facies and towards the top of a majority of the fourth-order shallowing-up sequences. This behaviour can be explained by the influence of sedimentary rate and water agitation during deposition. A high sedimentary rate will dilute the magnetic minerals in the atoll facies and the highwater agitation during deposition may be expected to have prevented the deposition of the magnetic grains. So, the combination of these two effects will result in the observed low values in the atoll crown and lagoonal facies. In the Canadian detached platform, MS is mainly negative. This means that the limestones are very pure. The technique does not appear to be appropriate in these rocks. The variations of average MS behaviour by platform type can imply difficulties in correlating carbonates from different settings. A comparison of time equivalent mound and platform deposits shows that after an important regressive surface, the MS values are increasing for the platform deposits and decreasing for the mound. So MS evolution can be in complete opposition (caused by highly different sedimentary rates) in different depositional settings. The MS signal preserved in carbonate rocks is probably mainly related to 1) varying clastic supplies; 2) varying carbonate accumulation rates (dilution of the magnetic minerals by high carbonate production) and 3) potentially diagenesis. [less ▲]

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See detailStructural Chemistry and Magnetic Properties of Nd18Li8Fe5-xMxO39 (M = Mn, Co),
Dutton, S. E.; Battle, Peter D.; Grandjean, Fernande ULg et al

in Inorganic Chemistry (2009), 48

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See detailUltrasonic internal defect detection in cheese
Leemans, Vincent ULg; Destain, Marie-France ULg

in Journal of Food Engineering (2009), 90(3), 333-340

Different ultrasonic signals and detection techniques were used and compared to detect internal foreign bodies present in semi-soft cheeses. The signals were a pulse or a chirp and the detection was ... [more ▼]

Different ultrasonic signals and detection techniques were used and compared to detect internal foreign bodies present in semi-soft cheeses. The signals were a pulse or a chirp and the detection was carried out by using either correlation with a reference signal or a wavelet decomposition. The principle of the detection consisted in measuring the time of flight of the transmitted signals and of the echoes, the latter in the absence of foreign body should be the double of the former. The presence of a foreign object affected this pattern in several ways. In order to assess the method, a small plastic cylindrical object of 3 mm in diameter was introduced in one half of the cheese and was tested for detection, the second half being used as reference for the control cheese. The results showed that the two signals and the two detection methods were able to localise the transmitted signals and the echo from the opposite face of the cheese under all circumstances. For the foreign body detection, the correlation method gave superior results, in term of signal to noise ratio as well as in term of error rate, while the two signals gave similar results. The analysis of the mean and standard deviation of the signal to noise ratio of the object echo showed that some samples presented peak values close to those due to the noise. Nevertheless, the object was detected in 90% of the tests. There was no significant effect of temperature on the detection technique. (C) 2008 Elsevier Ltd. All rights reserved. [less ▲]

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See detailEffects of Non Genetic and Crossbreeding Factors on Daily Milk Yield of Jersey x Sahiwal x Ankole Cows in Burundi
Hatungumukama, G.; Hornick, Jean-Luc ULg; Detilleux, Julien ULg

in Journal of Animal and Veterinary Advances (2009), 8(4), 794-798

The study was conducted at the Rukoko station located at 21 km North-Western of Bujumbura in the Imbo natural region, in the South of Rusizi River. The objective was to assess the effects of year of ... [more ▼]

The study was conducted at the Rukoko station located at 21 km North-Western of Bujumbura in the Imbo natural region, in the South of Rusizi River. The objective was to assess the effects of year of lactation, genetic group, lactation length, season and parity on the Daily Milk Yield (DMY) of Jersey (J) x Sahiwal (S) x Ankole (A) crossed cows. Milk yields were obtained from cows that have been both Suckled and Milked (SM) or only Milked (M). Data were analyzed using the procedure GLM in SAS on SM and M cows, separately. All factors affected significantly DMY (p<0.001). A significant increase was observed from 1989-1991 due to the improvement of management techniques. During this period, the production raised from 10.07 +/- 0.22 L-11.50 +/- 0.17 L day(-1) for SM cows. Unfortunately, the 1993 civilian war destabilized the managerial techniques and consequently, the milk production decreased. Highest milk yields were observed in crossed cows with 50% of Jersey and 50% of Sahiwal inheritances. Peak yields occurred at the 43rd (12.67 +/- 0.42 L) and 56th (6.42 +/- 0.45 L) days in milk for SM and M cows, respectively. Milk production was significantly higher in January (11.04 +/- 0.23 L day(-1)), in the middle of the rainy season, than in July (7.02 +/- 0.18 L day(-1)), in the middle of the dry season. Milk yield in SM cows increased from 8.15 +/- 0.17 L-9.46 +/- 0.16 L day(-1) during the 1st and the 2nd lactation, respectively. [less ▲]

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See detailFoy Notre-Dame : Art, Politique et Religion. Actes du colloque de Dinant (16 mai 2009)
Delfosse, Annick ULg; Dekoninck, Ralph, ; Pacco, Christian,

Book published by Société archéologique de Namur (2009)

Ouvrage collectif consacré à l'étude de la statue miraculeuse de Notre-Dame de Foy, de son sanctuaire et de son culte sous deux angles : artistique et historique. La première partie traite du sanctuaire ... [more ▼]

Ouvrage collectif consacré à l'étude de la statue miraculeuse de Notre-Dame de Foy, de son sanctuaire et de son culte sous deux angles : artistique et historique. La première partie traite du sanctuaire et des supports de dévotion. La deuxième partie dégage la signification du culte marial à Foy dans le contexte politique et religieux du XVIIe siècle et au-delà. [less ▲]

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See detailEvaluations of cognitive, linguistic and mnemonic competencies of people with Down’s syndrome; An integrative conception of mental retardation
Frenkel, Stéphanie ULg

in Journal of Cognitive Education and Psychology (2009), 8(2), 214-215

Thesis summary

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See detailShort-term post-dispersal fate of seeds defecated by two small primate species (Saguinus mystax and Saguinus fuscicollis) in the Amazonian forest of Peru
Culot, Laurence ULg; Huynen, Marie-Claude ULg; Gérard, Paul ULg et al

in Journal of Tropical Ecology (2009), 25

Post-dispersal fate of seeds dispersed by large primates is well studied but little is known about this process in small frugivores like tamarins. This study in the Amazonian forest of Peru aimed at ... [more ▼]

Post-dispersal fate of seeds dispersed by large primates is well studied but little is known about this process in small frugivores like tamarins. This study in the Amazonian forest of Peru aimed at investigating if characteristics related to the defecation patterns of tamarins (Saguinus mystax and Saguinus fuscicollis) affected short-term post-dispersal seed fate, through secondary seed dispersal by dung beetles and removal by seed predators. Data on dung beetle activity were based on direct observations of 49 defecations while seed fate was studied using semi-controlled experiments (N = 458 for secondary dispersal and N = 398 for predation). Tamarins produce small defecations with a low number of seeds. Thirty-five per cent of defecations were visited by an average of 1.5 dung beetles that usually transport the faeces as pellets. Twenty-four per cent of seeds were buried by beetles at a mean depth of 3.5 cm. With increasing quantities of faecal matter, the probability of secondary seed dispersal increased but not the depth of burial. Seed predation pressure was low (17.6%) after 4 d and higher in faeces of S. mystax than in faeces of S. fuscicollis. Despite their small size, tamarins could be considered as high-quality seed dispersers, with a potential role for forest regeneration. [less ▲]

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See detailPhosphate mineral associations in the Cema pegmatite (San Luis Province, Argentina) : Paragenesis, chemistry and significance in the pegmatite evolution
Roda-Robles, Encarnacion ULg; Galliski, Miguel; Roquet, M. B. et al

in Estudios Geologicos (2009), 19(2), 300-304

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See detailUne nouvelle macle de la pyrrhotite sur un échantillon de la mine El ,Potosi, Santa Eulalia, Chihuahua, Mexique
Philippo, Simon; Hatert, Frédéric ULg

in Le règne minéral (2009), 90

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See detailWind velocity perturbation of soil respiration measurements using closed dynamic chambers
Suleau, Marie ULg; Debacq, Alain ULg; Dehaes, V. et al

in European Journal of Soil Science (2009), 60(4), 515-524

P>Soil respiration measurements performed with closed dynamic chambers are very sensitive to pressure differences inside and outside the chamber: differences as small as 1 Pa can induce errors that are of ... [more ▼]

P>Soil respiration measurements performed with closed dynamic chambers are very sensitive to pressure differences inside and outside the chamber: differences as small as 1 Pa can induce errors that are of the same magnitude as the flux itself. The problem is usually solved by adding a vent to the experimental set-up. However, although this may give acceptable results in most cases, it is not effective at sites that are very exposed to wind. At the CarboEurope-IP agricultural site of Lonzee (Belgium), on bare soil, we used a vent composed of a vertical tube whose upper end was placed between two horizontal plates. Whilst this system worked properly in low-wind conditions, it led to a significant flux over-estimation (up to 300%) under strong wind conditions. We analysed the causes of this error and attributed it to a dynamic pressure effect at the vent, leading to air aspiration from within the chamber. We suggest that this is because the wind at the vent level was not the same as that experienced in the chamber, because of the large vertical wind speed gradient close to the soil. Another vent geometry was then proposed that positioned the vent at the chamber level. This new design was tested on both manual and automatically operated chambers. It was found to be efficient in windy conditions as most of the artificial correlation between soil respiration measurements and wind speed had disappeared. [less ▲]

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See detailProbability Density Estimation by Perturbing and Combining Tree Structured Markov Networks
Ammar, Sourour; Leray, Philippe; Defourny, Boris ULg et al

in Proc. of ECSQARU '09: 10th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (2009)

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See detailImpact of bone marker feedback on adherence to once monthly ibandronate for osteoporosis among Asian postmenopausal women
Kung, Annie Wai-Chee; Rachman, A Ichramsjah; Adam, MF John et al

in International Journal of Rheumatic Diseases (2009), 12

Aim: This study assesses the impact of serum carboxy-terminal collagen crosslinks (CTX) bone marker feedback (BMF) on adherence to ibandronate treatment in Asian postmenopausal women with osteoporosis ... [more ▼]

Aim: This study assesses the impact of serum carboxy-terminal collagen crosslinks (CTX) bone marker feedback (BMF) on adherence to ibandronate treatment in Asian postmenopausal women with osteoporosis. Methods: This was a 12-month (6-monthly phased), randomized, prospective, open-label, multi-center study conducted in 596 (of 628 enrolled) postmenopausal women with osteoporosis (£ 85 years old) who were naı¨ve, lapsed, or current bisphosphonate users. Patients were randomized into two arms: serum CTX BMF at 3 months versus no-BMF. Once-monthly 150 mg ibandronate tablet was administered for 12 months and adherence to therapy was assessed at 6 and 12 months. In addition, patient satisfaction and safety of ibandronate treatment were also assessed. Results: Serum CTX BMF at 3 months showed no impact on adherence. The proportions of adherent patients were comparable in the BMF versus no-BMF arms (92.6% vs. 96.0%, P = 0.16); overall, serum CTX levels were similar for adherent and non-adherent patients. However, BMF patients felt more informed about their osteoporosis (P < 0.001) and more satisfied (P < 0.01) than no-BMF patients. Conclusions: The Asian postmenopausal osteoporosis patients in this study had a high adherence rate to once-monthly ibandronate therapy. Use of serum CTX BMF had no further impact on increasing adherence, but increased treatment satisfaction. [less ▲]

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See detailCompression induces the expression of a sclerotic phenotype in human subchondral osteoblasts
Sanchez, Christelle ULg; Gabay, Odile; Pesesse, Laurence ULg et al

in Osteoarthritis and Cartilage (2009), 17(suppl 1), 95

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See detailLes noms de la langue en latin
Rochette, Bruno ULg

in Histoire Epistémologie Langage (2009), 31(2), 29-48

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See detailFrom hard to soft enforcement of EC Competition Law
Petit, Nicolas ULg; Rato, Miguel

Book published by Bruylant (2009)

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See detailMagnetic and transport properties of HoMnO3 monocrystals
Radulov, Iliya; Lovchinov, Vassil; Dimitrov, Dimitar et al

in Journal of Optoelectronics and Advanced Materials [= JOAM] (2009), 11

This paper presents results from measurements of the magnetization, specific heat and dielectric constant, and their temperature and magnetic field dependence, for HoMnO3 single crystals. The results are ... [more ▼]

This paper presents results from measurements of the magnetization, specific heat and dielectric constant, and their temperature and magnetic field dependence, for HoMnO3 single crystals. The results are discussed in the framework of existing data on magnetic symmetries and the interactions between the Mn-spins, the rare earth moments, and the lattice. From the resulting data, the magnetic phase diagram of HoMnO3 was built. [less ▲]

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See detailHistopathological diagnosis of a type vii mucopolysaccharidosis after pregnancy termination.
Delbecque, Katty ULg; Gaillez, Stephanie ULg; Schaaps, Jean-Pierre ULg

in Fetal & Pediatric Pathology (2009), 28(1), 1-8

Type VII mucopolysaccharidosis is a very rare recessive lysosomal storage disease. We diagnosed a type VII MPS in a case of severe fetal hydrops after pregnancy termination at 23 weeks of gestation. The ... [more ▼]

Type VII mucopolysaccharidosis is a very rare recessive lysosomal storage disease. We diagnosed a type VII MPS in a case of severe fetal hydrops after pregnancy termination at 23 weeks of gestation. The diagnosis was suspected on histopathological examination by the presence of foam cells in many viscera and foamy placental Hofbauer cells. Enzyme assay on cultured amniotic cells showed a markedly deficient beta-glucuronidase activity, thus confirming the diagnosis. This report shows the importance of a precise necropsy diagnosis in nonimmune hydrops because of putative implications for genetic counseling and prenatal diagnosis in subsequent pregnancies. [less ▲]

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See detailBiodiversity of three representative groups of the Antarctic zoobenthos - Coping with change (BIANZO II)
Raes, Maarten; Vanreusel, Ann; Pasotti, Francesca et al

Report (2009)

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