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See detailDescribing an emerging disease: A case of thrombocytopenic syndrome of the newborn calf
Theron, Léonard ULg; Vogin, Nathalie; Bayrou, Calixte ULg et al

in Maillard, R.; Navetat, H. (Eds.) European buiatrics forum 2009 (2009, December 03)

Since the last 5 years, a specific hemorrhagic syndrome of unknown etiology was described in young calves. This disease has a low incidence but a very high mortality rate. No etiology has been found yet ... [more ▼]

Since the last 5 years, a specific hemorrhagic syndrome of unknown etiology was described in young calves. This disease has a low incidence but a very high mortality rate. No etiology has been found yet, though many labs have already gathered lots of cases around Europe. For example, more than 200 cases in 170 farms in Germany, 60 cases in 40 farms were described in Gent’s veterinary faculty in Belgium. In France and in the United Kingdom, several cases have been recorded yet, in multiple different locations. As far as we know, the disease concern young calves aging between 10 and 30 days, from different breeds. Most calves present a purpura on multiple sites on skin, gums, eye sclera and ears. Hematology indicates severe anemia, thrombocytopenia, neutropenia with or without leukopenia. Necropsy indicates multiple hemorrhages in serous membranes on every abdominal viscera. Alfort’s veterinary faculty has described acute necrotizing hepatitis on one case in France. Those calves are BVDV and BTV negative both on antigen tests. In Liege’s veterinary faculty one live case was examined, from a modern farm with 160 calvings, and less than 5% of calf mortality per year. The farm had 3 hemorrhagic fatal cases during July 2009, of very quick evolution. From those, 2 were autopsied and diagnosed BVDV negative. The 20 days old calf had hyperthermia in the morning, received oxytetracycline in the farm and began bleeding at noon. As many of the described cases, the calf presented mild depression with hyperthermia and tachypnoea. Skin and ear purpura, gum hematoma, melena, hematuria and hemoglobinuria were noticed. Hematology revealed a severe anemia with decreased hematocrite due to a profound thrombocytopenia (4.79*109/l). Leukocytes formula also shown neutropenia (0.10*109/l) and a monocytosis (1.32*109/l). It resulted in a mild leukopenia (3.59*109/l). We also noticed hypogammaglobulinemia (2.92 g/l and 6.8% of total protein). This calf received an immune-suppressive treatment with a high dose of dexamethasone (0.64mg/kg), and a cover antimicrobial therapy (Enrofloxacine). A good evolution of the symptoms on day 2 was observed. Leukocyte formula had a normal answer to dexamethasone concerning the lymphocytes and neutrophils population. On day 6, blood formula was already stabilized, with increasing hematocrite from 12% on day 3 to 15%. Thrombocytes count has also increased to 58.20*109/l; leukocytes count was also back to normal with normal formula. Flow cytometric measures on the lymphocytes subpopulations indicated a subnormal Gamma-Delta and Natural Killer population, and a high number of apoptotic cells 12 hours after sampling. This syndrome can be linked to idiopathic thrombocytopenia in human newborn both regarding symptomatology and treatment answer. Though this data helps in the understanding of this pathology, it concerns only one animal and needs to be confirmed through further experiment on live cases. [less ▲]

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See detailWorkshop 7 « Recent Trends in Chinese International Migration »,
Martiniello, Marco ULg

Scientific conference (2009, December 03)

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See detailLes TFE en didactique des langues et littératures modernes à l'ULg. Vers une "communauté de chercheurs"
Simons, Germain ULg

Diverse speeche and writing (2009)

Depuis 2007, le service de didactique des langues et littératures modernes de l'ULg organise des séances de "mémorants" dans le domaine de la didactique des langues étrangères. Cette communication décrit ... [more ▼]

Depuis 2007, le service de didactique des langues et littératures modernes de l'ULg organise des séances de "mémorants" dans le domaine de la didactique des langues étrangères. Cette communication décrit le dispositif mis en place et propose quelques éléments d'évaluation. [less ▲]

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See detailThierry Martens et Jean de Westphalie
Adam, Renaud ULg

Conference given outside the academic context (2009)

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See detailAnalysing spectral data for the selection of a calibration model
Ziemons, Eric ULg; Moonen, François; Hubert, Philippe ULg

Patent (2009)

The invention relates to a method of analyzing spectral data for the selection of a calibration model relating spectra of a substance to a physical or chemical parameter of the substance over a ... [more ▼]

The invention relates to a method of analyzing spectral data for the selection of a calibration model relating spectra of a substance to a physical or chemical parameter of the substance over a predetermined range of the physical or chemical parameter, comprising the steps of capturing spectral data of the substance with respective values of the physical or chemical parameter over the predetermined range, applying a plurality of calibration models and mathematical pretreatments to the captured spectral data in dependence upon the values of the physical or chemical parameter, calculating tolerance intervals and a reference level for each calibration model, and displaying the tolerance intervals and the reference level over the predetermined range for each calibration model. In this way, a possibility for analyzing spectra data is provided which is useful in spectroscopic applications and makes analytical interpretation and evaluation easier and more accurate. [less ▲]

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See detailChina 2009. State of the Art Conference
Martiniello, Marco ULg

Scientific conference (2009, December 03)

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See detailLes conditions générales en droit de la construction
Kohl, Benoît ULg; Salzburger, Romain ULg

Conference (2009, December 03)

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See detailPRIX WALLON DE LA QUALITE 2009 : « La Qualité : ombre et lumière »
LEROY, Dominique; DELGAUDINE, Marie ULg

Article for general public (2009)

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See detailMapping baseline soil content in pollutants in urbanized and industrialized areas in the Walloon region: development of a sampling methodology for the Pollusol 2 survey (SPAQuE)
Peirera, Benoit; Schneider, Arnaud; Titeux, Hugues et al

Conference (2009, December 02)

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See detailMapping of soil-sediment systems contaminations around a metal-ore smelter. The example of Cu in Lubumbashi (R.D. Congo)
Mpundu, Michel; Kaya Muyumba, Donato ULg; N'gongo, Michel et al

Conference (2009, December 02)

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See detailSecretion and maturation of toxins in the venom duct of Conustextile
Dobson, Rowan ULg; Corbesier, Corine; Collodoro, Mike et al

Conference (2009, December 02)

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See detailIdentification and Ranking of risk factors for somatic cell count economic penalty in 349 southern Belgium dairy farms
Theron, Léonard ULg; Humblet, Marie-France ULg; Delfosse, C. et al

in Maillard, R.; Navetat, H. (Eds.) European buiatrics forum 2009 (2009, December 02)

In Belgium, the main economic penalty accounted for bovine milk quality is the bulk milk somatic cell count geometric mean over 3 months reaching more than 400,000 cells/ml. Yet, it is still difficult to ... [more ▼]

In Belgium, the main economic penalty accounted for bovine milk quality is the bulk milk somatic cell count geometric mean over 3 months reaching more than 400,000 cells/ml. Yet, it is still difficult to make progress on udder health and milk quality because regional risks related to endemic farming practices are not broadly known. Hence, a first step in understanding specific udder health risks associated with herd management has to be a broad ecopathological survey. A random stratified sample of 349 dairy farms, representing 25% of producers registered for performance recording, was selected with a total of 16,000 cows. Thorough audits recording 400 farming practices were made in each farm by 2 different surveyors during milking. The practices were recorded across four categories: Herd structure, Housing, Milking practices and Herd Management (including Nutrition). Our chosen variable was the geometric mean of the herd composite somatic cell count from the last three months compared to the 400,000 cells/ml European threshold. The sample had a mean somatic cell count of 287,000 cells/ml following a normal distribution between 73,000 and 807,000 cells/ml. From 19 risk indicators identified through univariate logistic analysis (p<0.15), half were related to milking practices and 5 were underlined by significant odds-ratios (OR) found through multivariate logistic analysis (p<0.05). Therefore, it was found that cubicle housing had the least risk (OR= 0.59 compared with tightened stalls, OR= 0.42 compared with straw stalls); Presence of a calving pen (OR= 0.40), use of post-dipping (OR= 0.50) had a positive impact; whereas pre-dip had a negative impact in our study (OR= 3) though it was not clear if this routine was performed correctly. Stripping also had a bad impact on milk quality whether it was systematic (OR = 1.90) or occasional (OR = 2.43). It was also found that farms with poor milking liner hygiene had more trouble (OR = 2.34). The results were comparable to other ecopathological studies such as northern and southern American and European studies. This study is a prerequisite in operational veterinary advice in southern Belgium dairy farms, because it provides a cross-sectional study of dairy practices and states on major epidemiological risk factors in dairy management for this region. [less ▲]

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See detailEnjeux et défis de l’utilisation des eaux souterraines
Dassargues, Alain ULg

Conference given outside the academic context (2009)

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See detailVirtual model of the city of Liège in the eighteen century - "Virtual Leodium"
Billen, Roland ULg; Blain, Pascal ULg; Donneau, Olivier ULg et al

in Verly, Jacques (Ed.) Proceedings of 3D Stereo MEDIA 2009, International 3D Stereo Film and Technology Festival (3D Stereo MEDIA), Liège, Belgium, 1-3 Dec. 2009. (2009, December 01)

Virtual Leodium is a project aiming to scan and digitize a master piece of the collection of the University of Liège, the historical model of the city of Liège around 1730 realised by Gustave Ruhl. The ... [more ▼]

Virtual Leodium is a project aiming to scan and digitize a master piece of the collection of the University of Liège, the historical model of the city of Liège around 1730 realised by Gustave Ruhl. The two main originalities of the approach are to use a projected-fringes scanning technique and to generate a geo-database as a support for archaeological information. This interdisciplinary project gathers physicists, geomaticians, librarians, and archaeologists. [less ▲]

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See detailThe massive star binary fraction in young open clusters - II. NGC6611 (Eagle Nebula)
Sana, H.; Gosset, Eric ULg; Evans, C. J.

in Monthly Notices of the Royal Astronomical Society (2009), 400

Based on a set of over 100 medium- to high-resolution optical spectra collected from 2003 to 2009, we investigate the properties of the O-type star population in NGC6611 in the core of the Eagle Nebula ... [more ▼]

Based on a set of over 100 medium- to high-resolution optical spectra collected from 2003 to 2009, we investigate the properties of the O-type star population in NGC6611 in the core of the Eagle Nebula (M16). Using a much more extended data set than previously available, we revise the spectral classification and multiplicity status of the nine O-type stars in our sample. We confirm two suspected binaries and derive the first SB2 orbital solutions for two systems. We further report that two other objects are displaying a composite spectrum, suggesting possible long-period binaries. Our analysis is supported by a set of Monte Carlo simulations, allowing us to estimate the detection biases of our campaign and showing that the latter do not affect our conclusions. The absolute minimal binary fraction in our sample is f[SUB]min[/SUB] = 0.44 but could be as high as 0.67 if all the binary candidates are confirmed. As in NGC6231 (see Paper I), up to 75 per cent of the O star population in NGC6611 are found in an O+OB system, thus implicitly excluding random pairing from a classical IMF as a process to describe the companion association in massive binaries. No statistical difference could be further identified in the binary fraction, mass-ratio and period distributions between NGC6231 and NGC 6611, despite the difference in age and environment of the two clusters. [less ▲]

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