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See detailRelevance of soil mapping criteria to predict geochemical background of trace elements in soils from local to regional scales.
Colinet, Gilles ULg; Bogaert, Patrick; Bock, Laurent ULg

Poster (2006)

Among natural factors driving the soil content in metallic trace elements (MTE), the geochemical background is often deemed as a sound base for the detection of contaminations. Numerous studies have shown ... [more ▼]

Among natural factors driving the soil content in metallic trace elements (MTE), the geochemical background is often deemed as a sound base for the detection of contaminations. Numerous studies have shown the difficulties to take into account the multi-dimensionnality of the spatial variability of most soil properties. As far as a detailed soil map is available for Belgium, the relevance of its information was investigated at various spatial scales in the Walloon Region (Southern Belgium), from the plot to the entire region, to evaluate the feasibility of a multi-scale mapping of geochemical background. A database of soil profiles (gathering both agricultural and forest soils) was used to analyse the relationships between the MTE total content (measured after HF-HClO4-HCl dissolution) and other general characteristics such as pH, Total Organic Carbon content (TOC), Particle Size Distribution (PSD), and cationic exchange capacity (CEC). The factors of MTE spatial distribution inside and between solums were investigated through multivariate statistical analysis. The spatial dependence of these factors was then studied over plot, field, farm, county and region scales, and compared to the spatial structures of the soil map parameters. At the solum level, strong relationships between most of the studied MTE were found, as well as between stone charge and fine earth contents. The PSD is the main driving factor of MTE content in non-carbonated soils, whatever the land use. When considering soil associations, such as catenas, the slope redistribution processes must be taken into account. However, the PSD remains the main driving factors and, as the soil map contains information about that property (mainly the textural class and the profile development), a cartography of the geochemical background based on the use of the soil map and pedotransfer functions or regression models appears relevant. At the regional scale, some long-range spatial structures could be identified. These result mainly from the geological structure of the Walloon region, where the lithological zonation is rather clearly marked. The soil map (texture and nature of stone charge) appears relevant at that scale too but does need a generalization process and fails however to differenciate the intra-type soil spatial variability. Some basic processes of integration of point measurements and qualitative information have been explored. They should be further investigated in the future. [less ▲]

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See detailThe early eukaryote fossil record
Javaux, Emmanuelle ULg

in Jékely, Gáspár (Ed.) Evolution of the Eukaryotic Endomembrane System and Cytoskeleton (2006)

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See detailUtilisation et évaluation du thésaurus belge 3BT adapté au Rwanda
De Jonghe, M.; Jamoule, M.; Porignon, Denis ULg

in Revue Médicale de Bruxelles (2006), 27

The Kigali university medical centre (CHUK) lacks visibility on its activities for many years. Institution management as well understanding the institution as the corner stone of the Rwandese health ... [more ▼]

The Kigali university medical centre (CHUK) lacks visibility on its activities for many years. Institution management as well understanding the institution as the corner stone of the Rwandese health system and reinforcement of its visibility are all health policy major issues. Nevertheless, to this point no such tool has been developed nor implemented. The objective is to assess the feasibility of the use of the thesaurus 3BT as data collection tool in a Rwandese health institution. In august 2005, the thesaurus 3BT (Belgian, bilingual, biclassified ICD-10/ICPC-2) adapted to the CHUK has been implemented. Main issues : encoding quality and thesaurus operationality. Qualitative analysis has been performed on 899 coding of which 16 empty. Low occurrences (! 0.2 %) of about 25 % of codings of clinical diagnosis show the need for using a thesaurus but also to upgrade it. Near 45 % of the empty codings could be fulfilled with a quick look to the original medical record. Some diagnoses are missing in the thesaurus 3BT. 66 % of which have similar concepts in the thesaurus although not identifiable by a lay person. Finally, a clinical data blind coding test by a doctor used to classifications and by a lay person used to code clinical diagnosis from medical records of the hospitalised patients shows an exact similarity in 70 % of the coding and a loss of coding precision in 20 %. No coding error has been identified at this time. In conclusion, operationality of the thesaurus is quite acceptable in this study. The thesaurus makes easy the coding of clinical diagnosis even by lay people. Quality of data is enough to be able to interpret the quantitative results of the coding process. This study has to be repeated on a wider basis. [less ▲]

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See detailAmelioration de la methode d'extraction d'ADN au CTAB appliquee aux feuilles de cotonnier.
Benbouza, H.; Baudoin, Jean-Pierre ULg; Mergeai, Guy ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2006), 10(2), 73-76

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See detailLes processus de paternalité et le passage à la paternité
Naziri, Despina ULg; De Coster, L.

in Gillot-de-Vries, F. (Ed.) Les parentalités d'aujourd'hui (2006)

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See detailElevated MMP-12 protein levels in induced sputum from patients with COPD
Demedts, Inge K.; Morel-Montero, A.; Lebecque, S. et al

in Thorax (2006), 61(3), 196-201

Background: Several matrix metalloproteinases ( MMPs) are involved in the pathogenesis of chronic obstructive pulmonary disease ( COPD). In mice, MMP-12 plays a crucial role in the development of ... [more ▼]

Background: Several matrix metalloproteinases ( MMPs) are involved in the pathogenesis of chronic obstructive pulmonary disease ( COPD). In mice, MMP-12 plays a crucial role in the development of cigarette smoke induced emphysema. A study was undertaken to investigate the role of MMP-12 in the development of COPD in human smokers. Methods: Induced sputum samples were collected from patients with stable COPD (n = 28), healthy smokers ( n = 14), never smokers ( n = 20), and former smokers ( n = 14). MMP-12 protein levels in induced sputum were determined by ELISA and compared between the four study groups. MMP-12 enzymatic activity in induced sputum was evaluated by casein zymography and by cleaving of a fluorescence quenched substrate. Results: Median (IQR) MMP-12 levels were significantly higher in COPD patients than in healthy smokers, never smokers, and former smokers (17.5 (7.1 - 42.1) v 6.7 (3.9 - 10.4) v 4.2 (2.4 - 11.3) v 6.1 (4.5 - 7.6) ng/ml, p = 0.0002). MMP-12 enzymatic activity was significantly higher in patients with COPD than in controls (4.11 (1.4 - 8.0) v 0.14 (0.1 - 0.2) mu g/ml, p = 0.0002). Conclusion: MMP-12 is markedly increased in induced sputum from patients with stable COPD compared with controls, suggesting a role for MMP-12 in the development of COPD in smokers. [less ▲]

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See detailRobust analysis of silhouettes by morphological size distributions
Barnich, Olivier ULg; JODOGNE, Sébastien ULg; Van Droogenbroeck, Marc ULg

in Lecture Notes in Computer Science (2006), 4179

We address the topic of real-time analysis and recognition of silhouettes. The method that we propose first produces object features obtained by a new type of morphological operators, which can be seen as ... [more ▼]

We address the topic of real-time analysis and recognition of silhouettes. The method that we propose first produces object features obtained by a new type of morphological operators, which can be seen as an extension of existing granulometric filters, and then insert them into a tailored classification scheme. Intuitively, given a binary segmented image, our operator produces the set of all the largest rectangles that can be wedged inside any connected component of the image. The latter are obtained by a standard background subtraction technique and morphological filtering. To classify connected components into one of the known object categories, the rectangles of a connected component are submitted to a machine learning algorithm called EXtremely RAndomized trees (Extra-trees). The machine learning algorithm is fed with a static database of silhouettes that contains both positive and negative instances. The whole process, including image processing and rectangle classification, is carried out in real-time. Finally we evaluate our approach on one of today's hot topics: the detection of human silhouettes. We discuss experimental results and show that our method is stable and computationally effective. Therefore, we assess that algorithms like ours introduce new ways for the detection of humans in video sequences. [less ▲]

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See detailApproches par l'erreur totale en transfert analytique
Dewé, Walthère ULg; Boulanger, Bruno ULg; Govaerts, B. et al

Conference (2006)

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See detailEvaluation of original dual thromboxane A2 modulators as anti-angiogenic agents
Dassesse, Thibaut; de Leval, Xavier; Dogné, Jean-Michel et al

Scientific conference (2006)

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See detailL'environnement, un certain droit de l'homme
Pâques, Michel ULg

in Administration Publique [=AP] : Revue du Droit Public et des Sciences Administratives (2006)

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See detailA-t-on evalue l'interet du SAMU?
Bodson, Lucien ULg; Grenade, J.; Micheels, Jean ULg et al

in Revue Médicale de Liège (2006), 61(5-6, May-Jun), 494-9

Recent international guidelines about emergency situations (ILCOR / ERC) pointed to the need of the whole "chain of survival". ALS, Advanced Life Support (the last and "medical" part of the chain ) is ... [more ▼]

Recent international guidelines about emergency situations (ILCOR / ERC) pointed to the need of the whole "chain of survival". ALS, Advanced Life Support (the last and "medical" part of the chain ) is important and influences survival rate. If no doubt exists about "what" and "when" to do in such situations, there is no consensus in industrialized countries about "who" should be in charge of such out-of-hospital acute diagnosis and treatment: emergency physicians, emergency nurses, emergency medical technicians (EMT), other "new" professionals ? ... A description of the MICU system in Belgium is given. [less ▲]

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See detailThe concept of iso-inertial assessment: Reproducibility analysis and descriptive data
Jidovtseff, Boris ULg; Croisier, Jean-Louis ULg; Lhermerout, Claude ULg et al

in Isokinetics & Exercise Science (2006), 14(1), 53-62

The purpose of this study was to investigate the reproducibility of findings derived from a new iso-inertial dynamometer during bench press (BP) and squat (SQ) and to provide descriptive data for ... [more ▼]

The purpose of this study was to investigate the reproducibility of findings derived from a new iso-inertial dynamometer during bench press (BP) and squat (SQ) and to provide descriptive data for recreational athletes. A position transducer and accelerometer were combined to assess velocity and power during free weight lifting exercises. Simulated movement with a pulley system revealed the excellent technical consistency of the dynamometer. Sixteen male subjects participated in the study. Iso-inertial tests consisted of lifting as fast as possible four different relative loads (35, 50, 70, 90% 1RM in BP and 45, 60, 75, 90% 1RM in SQ). The test was repeated one week later. Analysis of variance revealed no significant variation between sessions or trials. Reproducibility was better in velocity than in power, although it remained fairly good in both exercises (coefficients of variation [CV] never exceeding 10%) except for the time to peak power parameter. Descriptive data confirmed the classical force-velocity and force-power relationships for BP and SQ. In conclusion, this study demonstrated reliable measurements in BP and SQ iso-inertial exercises. Monitoring force-velocity and force-power relationships offers an original functional approach in strength training supervision. [less ▲]

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See detailPline l’Ancien et l’art de la Renaissance. Balises pour une étude de réception entre le Nord et le Sud
Bert, Mathilde ULg

in Revue Belge d'Archéologie et d'Histoire de l'Art (2006), 75

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See detailLe “vers de prose” : vers et prose ? entre vers et prose ? (ni vers ni prose ?)
Purnelle, Gérald ULg

in Formes Poétiques Contemporaines (2006), 4

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See detailSelf-face does not capture attention: an inattentional blindness study
Devue, Christel ULg; Laloyaux, Cédric ULg; Feyers, Dorothée ULg et al

Poster (2006)

It has been shown previously that some categories of stimuli are more likely to capture attention under condition of inattention compared to others. This is the case of faces and auto-referential material ... [more ▼]

It has been shown previously that some categories of stimuli are more likely to capture attention under condition of inattention compared to others. This is the case of faces and auto-referential material (e.g., the subject’s own name) in the inattentional blindness paradigm (Mack & Rock, 1998). However, stimuli combining these two properties have never been assessed. Yet it could be that the own face, because it is both a face and a self-referential stimulus, is more prone to attract attention compared to other faces. On the contrary, it could be that the identity and the familiarity of faces are not relevant factors because any face attracts attention by itself and all faces are equally distractive. Moreover, most of previous studies have used schematic unrealistic stimuli. Here, we tested these two opposite hypotheses in a first experiment using photographic stimuli and results showed that the own face does not attract attention compared to another highly familiar face or to an unknown face. Nevertheless, it appears that the own face was still better recognized compared to the others. A second experiment was aimed at verifying whether faces attract attention more than other objects with the same realistic photographic stimuli than used in experiment 1. Results confirmed previous findings that faces are more resistant to inattentional blindness than other objects. Our study suggests that a face by itself attracts attention compared to other objects whatever its familiarity or its identity. These results challenge the view that auto-referential material benefits from specific attentional processes. [less ▲]

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See detailLe mur d’enceinte de Thoutmosis III décoré par Ramsès II au grand temple d’Amon-Rê à Karnak
Winand, Jean ULg

in Isiaca. Bull. de l’Ass. d’Egyptologie (2006), (1), 71-83

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See detailRecomposer sa vie ailleurs ; Recherche-action auprès des familles primo-arrivantes
Born, Michel ULg; Deccache, A.; Desmet, H. et al

Book published by L'Harmattan (2006)

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See detailIdentification of accessible proteins expressed in human breast cancer
Castronovo, Vincenzo ULg; Kischel, Philippe; Guillonneau, François et al

Scientific conference (2006)

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See detailAccuracy and precision : total error vs 4-6-30
Boulanger, Bruno ULg; Dewé, Walthère ULg; Hubert, Philippe ULg et al

Conference (2006)

Detailed reference viewed: 64 (3 ULg)