Last 7 days
Bookmark and Share    
Full Text
Peer Reviewed
See detailLes références à la maladie et à son traitement dans les archives de Zénon
Ricciardetto, Antonio ULg

in Histoire des Sciences Médicales (in press)

Detailed reference viewed: 10 (1 ULg)
See detailLiège. La période contemporaine (1914-2017). De la Première Guerre à aujourd'hui
Lanneau, Catherine ULg

in Demoulin, Bruno (Ed.) Histoire de Liège. Une cité, une capitale, une métropole (in press)

Detailed reference viewed: 17 (0 ULg)
Full Text
Peer Reviewed
See detailPotential demal exposure of florists to fungicide residues on flowers and risk assessment
Toumi; Joly, L.; Vleminckx, C. et al

in Communications in Agricultural and Applied Biological Sciences (in press)

Flowers are susceptible to many pests and diseases. Therefore, they can be sprayed several times during their growth considering that no MRL are set for flow-ers. High levels of pesticide residues ... [more ▼]

Flowers are susceptible to many pests and diseases. Therefore, they can be sprayed several times during their growth considering that no MRL are set for flow-ers. High levels of pesticide residues potentially expose daily the florists who han-dle cut flowers and possibly could endanger their health. A study was carried out to evaluate the risk for florists exposed to fungicide residues during normal profes-sional tasks. Cotton gloves were distributed to 20 florists (two pairs to each florist) and worn during two consecutive half days during normal professional tasks (from min 2 hours to max 3 hours/day) to measure their potential dermal exposure (PDE). Samples were analyzed with a multi-residue (QuEChERS) method validated by a laboratory accredited for pesticide residues and with a combination of gas and liquid chromatography tandem mass spectrometry. It appears from the results that a total of 54 fungicides with different toxicity classes were detected on cotton gloves. An average of 15.53 mg/kg fungicide residues per glove sample was meas-ured. Six of 54 are suspected of causing cancer after prolonged or repeated expo-sure. Boscalid was both the active substance for which the highest maximum and average concentrations (26.21 and 3.47 mg/kg, respectively). Famoxadone had the most critical PDE (156% AOEL for the maximum concentration). As a consequence, this study leads to conclude that Belgian florists, who worked for several years and handled a large number of flowers contaminated by high concentrations of pesti-cide residues, are exposed daily with a potential effect on their health. This sug-gests that safety standards should be set for residue levels on cut flowers. [less ▲]

Detailed reference viewed: 23 (3 ULg)
Full Text
Peer Reviewed
See detailRisk assessment for small farmers exposed to plant protection products in the Niger River valley
Massalatchi Illyassou, Karimoun; Adamou, R.; Schiffers, Bruno ULg

in Communications in Agricultural and Applied Biological Sciences (in press)

Plant protection products play a very important role in agriculture. However, their misuse can have serious negative impacts both on human health and environment. A study was carried out to identify the ... [more ▼]

Plant protection products play a very important role in agriculture. However, their misuse can have serious negative impacts both on human health and environment. A study was carried out to identify the plant protection products used in the Niger River valley and to observe the local pesticide management practices. Ten active substances were identified as the most used chemicals by farmers. Their toxicological properties were characterized and their respective Potential Dermal Exposures (PDE) was evaluated in order to assess the risk level for the local small growers. The UK Predictive Operator Exposure Model was used to quantify the PDE during mixing/loading and application according to the local practices. The survey shows that the most common active substances are organophosphate or pyrethroids insecticides. In addition, some other prohibited and counterfeit pesticides cocktails are also used. All active substances used in Niger River valley are highly toxic. When sprayed without personal protective equipment (PPE) they could induce significant harmful impacts on the human health after exposure. The predictive exposure levels vary from 0.0013 mg/kg bw/day to 0.4125 mg/kg bw/day, several times higher the Acceptable Operator Exposure Level (AOEL) for all actives substances. The survey also revealed that 76% of operators do not use any PPE during mixing/loading or spraying. Other bad practices observed in study area can increase the exposure of operators. Moreover, local consumers could also be exposed through intake of pesticide residues on harvested products. [less ▲]

Detailed reference viewed: 46 (7 ULg)
Full Text
Peer Reviewed
See detailAvoidance of protein oxidation correlates with the desiccation and radiation resistance of hot and cold desert strains of the cyanobacterium Chroococcidiopsis
Fagliarone, Claudia; Mosca, Claudia; Ubaldi, Ilaria et al

in Extremophiles : Life Under Extreme Conditions (in press)

In order to investigate the relationship between desiccation and the extent of protein oxidation in desert strains of Chroococcidiopsis a selection of 10 isolates from hot and cold deserts and the ... [more ▼]

In order to investigate the relationship between desiccation and the extent of protein oxidation in desert strains of Chroococcidiopsis a selection of 10 isolates from hot and cold deserts and the terrestrial cyanobacterium Chroococcidiopsis thermalis sp. PCC 7203, were exposed to desiccation (air-drying) and analysed for survival. Strain CCMEE 029 from the Negev desert and the aquatic cyanobacterium Synechocystis sp. PCC 6803 were further investigated for protein oxidation after desiccation (drying over silica gel), treatment with H2O2 up to 1M and exposure to γ-rays up to 25 kGy. Then a selection of desert strains of Chroococcidiopsis with different survival rates after prolonged desiccation, as well as Synechocystis sp. PCC 6803 and Chroococcidiopsis thermalis sp. PCC 7203, were analysed for protein oxidation after treatment with 10 mM and 100 mM of H2O2. Results suggest that in the investigated strains a tight correlation occurs between desiccation and radiation tolerance and avoidance of protein oxidation [less ▲]

Detailed reference viewed: 43 (2 ULg)
Full Text
Peer Reviewed
See detailConstant 2-labellings and an application to (r,a,b)-covering codes
Vandomme, Elise ULg; Gravier, Sylvain

in Discussiones Mathematicae Graph Theory (in press)

We introduce the concept of constant 2-labelling of a vertex-weighted graph and show how it can be used to obtain perfect weighted coverings. Roughly speaking, a constant 2-labelling of a vertex-weighted ... [more ▼]

We introduce the concept of constant 2-labelling of a vertex-weighted graph and show how it can be used to obtain perfect weighted coverings. Roughly speaking, a constant 2-labelling of a vertex-weighted graph is a black and white colouring of its vertex set which preserves the sum of the weights of black vertices under some automorphisms. We study constant 2-labellings on four types of vertex-weighted cycles. Our results on cycles allow us to determine (r, a, b)-codes in Z^2 whenever |a−b|>4, r>1 and we give the precise values of a and b. This is a refinement of Axenovich’s theorem proved in 2003. [less ▲]

Detailed reference viewed: 24 (5 ULg)
Full Text
Peer Reviewed
See detailStudy of the chemical composition of essential oils and floral waters of Cymbopogon citratus (DC.) Stapf (Poaceae) from Senegal
Diop, Serigne Mbacké; Guèye, Momar Talla; Ndiaye, Ibrahima et al

in International Journal of Biological and Chemical Sciences (in press)

This work aimed to study the chemical composition of essential oils and floral waters of Cymbopogon citratus (DC.) Stapf (Poaceae) from Senegal. The plants were collected in two different localities ... [more ▼]

This work aimed to study the chemical composition of essential oils and floral waters of Cymbopogon citratus (DC.) Stapf (Poaceae) from Senegal. The plants were collected in two different localities, Dakar and Kaolack. The extracts were obtained by steam distillation from both fresh and dried plants and analyses carried out by GC/FID and GC/MS. Oils from Dakar were dominated by geranial which represented 46.0-43.9%, neral 31.8-31.0%, myrcene 10.8-11.7% and geraniol 2.7-4.2% in the fresh and dried plants, respectively. Their floral waters contained mainly 44.6-41.4% geranial, 39.7-35.6% neral and 8.8-13.2% geraniol. The oils from Kaolack were characterized by geranial which constituted 49.5-44.5%, neral 33.3-31.2%, myrcene 7.2-9.6% and geraniol 4.3-6.1% in the fresh and dried plants, respectively. In their floral waters, it is identified 42.8-33.6% geranial, 38.4-27.6% neral and 12.5-24.5% geraniol. This original study revealed that both oils and floral waters of C. citratus from Senegal are characterized by geranial and neral whose repellent properties against mosquitoes are known. [less ▲]

Detailed reference viewed: 18 (2 ULg)
Peer Reviewed
See detailLabels du patrimoine culturel, ordres juridiques et effectivité de la norme
Desseilles, François ULg

in Tanchoux, Philippe (Ed.) Les labels dans le domaine du patrimoine (in press)

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detail« Du définitif sur du provisoire… » : Psychopathologie et tatouage
Englebert, Jérôme ULg; Follet, Valérie

in Feneuil, Anthony; Krtolica, Igor (Eds.) L’expérience de l’éternité : Philosophie, clinique, mystique (in press)

Detailed reference viewed: 46 (3 ULg)
Full Text
Peer Reviewed
See detailThe Gravity of International Crimes as a Challenge to the (Full) Protection of Human Rights before International Criminal Tribunals? A Strasbourg Perspective
Deprez, Christophe ULg

in Nordic Journal of International Law (in press)

While it goes undisputed that international criminal tribunals (ICTs) are, in general terms, bound to respect human rights standards, there is no consensus on whether their obligations should be identical ... [more ▼]

While it goes undisputed that international criminal tribunals (ICTs) are, in general terms, bound to respect human rights standards, there is no consensus on whether their obligations should be identical in scope to those of national criminal tribunals. Most commentators seem to value the idea of equality in protection for international and domestic defendants alike. Yet, according to others, the human rights obligations of ICTs should be contextualised, that is, adapted to the specificities of international justice – and most critically to the gravity of international crimes. This article seeks to shed some light on this debate. It does so, in particular, by pointing out the intrinsic flexibility of human rights, and by drawing on the practice of the European Court of Human Rights with respect to gravity-based contextualism. [less ▲]

Detailed reference viewed: 23 (1 ULg)
Peer Reviewed
See detailRome Statute of the International Criminal Court
Deprez, Christophe ULg

in d'Aspremont, Jean; Scobbie, Ian (Eds.) Oxford Database on International Organizations (in press)

This note discusses the background, content and overall impact on the 'common law' of international organizations of the Rome Statute of the International Criminal Court.

Detailed reference viewed: 26 (2 ULg)
Full Text
Peer Reviewed
See detailThe role of conservators: an international survey on conservation within contemporary art collections
D'Haenens, Manon ULg

in CeROArt : Conservation, Exposition, Restauration d'Objets d'Art (in press)

Detailed reference viewed: 33 (3 ULg)
Full Text
See detailLes bandes détournées de Jochen Gerner et Ilan Manouach
Crucifix, Benoît ULg; Dozo, Björn-Olav ULg

in Garric, Henri (Ed.) La destruction des images en bande dessinée (in press)

Occupant tout les deux une position liminale du champ de la bande dessinée, Jochen Gerner et Ilan Manouach se sont, chacun à leur manière, livrés à des expériences réflexives de destruction de l'image en ... [more ▼]

Occupant tout les deux une position liminale du champ de la bande dessinée, Jochen Gerner et Ilan Manouach se sont, chacun à leur manière, livrés à des expériences réflexives de destruction de l'image en bande dessinée par le détournement. Ainsi, avec ses projets tels que TNT en Amérique, Abstraction (1941-1968), ou Le Panorama du Feu, Jochen Gerner opère par la technique du recouvrement une relecture d'albums classiques et de petits formats populaires, attirant l'attention sur certains motifs graphiques, abstraits ou figuratifs des objets détournés. Plus en phase avec l'héritage situationniste du détournement, Ilan Manouach intervient sur les œuvres appropriées pour en questionner les principes idéologiques : Katz interroge la métaphore animale au cœur de Maus, tandis qu'avec Les Schtroumpfs noirs, il retourne au thème de la représentation en imprimant l'album de Peyo entièrement en cyan. Moins politisé dans Riki fermier, Manouach y fait disparaître les personnages d'un album de Petzi pour ne garder que celui du pélican Riki, suivant un projet d'écriture à contrainte décrit comme « lipogrammatique ». Pour Gerner comme Manouach, la pratique du détournement touche directement à la matérialité de l'objet de bande dessinée, au sens où il y a une intervention physique sur les bandes dessinées détournées – que ce soit par recouvrement, retouche ou réimpression – qui se double d'un maintien du format de l'objet détourné (48 CC, pocket, pamphlet ou roman graphique). Le lecteur se retrouve ainsi face à une dé-familiarisation d'un objet pourtant connu et reconnu dans sa matérialité. Cette expérience conscientise un acte réflexif de destruction : les images d'origine se voient recouvertes de noir, rayées, masquées, retouchées, effacées, défigurées. Tout en étant extrêmement opaque, ce rapport à la matérialité est cependant différent d'autres formes de « graphiation »1 qui attirent l'attention sur une gestuelle physique, sur les traces de la main. Au contraire, comme l'a noté Pedro Moura à propos du travail d'Ilan Manouach, il y a une volonté de se « plac[er] en dehors du domaine de l’expression auctoriale, et même humaine, afin de favoriser l’émergence d’une expression dépersonnalisée »2. Plus proches d'une écriture « non-créative » telle que l'a décrite Kenneth Goldsmith3, ces deux pratiques du détournement mettent en scène une destruction d'images, dont les livres en portent la trace, donnant lieu à une traçabilité différente d'une graphiation qui mettrait en avant la patte graphique du dessinateur. La mesure destructrice de cette acte de détournement se retrouve d'ailleurs en prises avec le dispositif juridique du copyright, comme l'atteste la réaction des ayant-droits à Katz, envoyé au pilon. Face à ces deux formes de destruction (destruction de l'œuvre détourné et, retour du bâton, pilonnage du détournement), MetaKatz s'offre une double portée réflexive qui couvre toute la portée du geste destructeur au cœur du détournement, un acte qui se veut en même temps être une forme d'engendrement, puisqu'il ouvre à de nouveaux dispositifs, à de nouvelles images, et à de nouvelles lectures. Notre chapitre mettra donc en parallèle les œuvres d'Ilan Manouach et de Jochen Gerner afin d'examiner comment la question de la destruction se trouve au cœur du détournement, et de façon plus spécifique, comment celle-ci relève d'un rapport complexe à la matérialité du médium dont nous étudierons les enjeux. [less ▲]

Detailed reference viewed: 25 (1 ULg)
Full Text
Peer Reviewed
See detailProbabilistic Framework for the Characterization of Surfaces and Edges in Range Images, with Application to Edge Detection
Lejeune, Antoine ULg; Verly, Jacques ULg; Van Droogenbroeck, Marc ULg

in IEEE Transactions on Pattern Analysis & Machine Intelligence (in press)

We develop a powerful probabilistic framework for the local characterization of surfaces and edges in range images, which is useful in many applications of computer vision, such as filtering, edge ... [more ▼]

We develop a powerful probabilistic framework for the local characterization of surfaces and edges in range images, which is useful in many applications of computer vision, such as filtering, edge detection, feature extraction, and classification. We use the geometrical nature of the data to derive an analytic expression for the joint probability density function (pdf) for the random variables used to model the ranges of a set of pixels in a local neighborhood of an image. We decompose this joint pdf by considering independently the cases where two real world points corresponding to two neighboring pixels are locally on the same real world surface or not. In particular, we show that this joint pdf is linked to the Voigt pdf and not to the Gaussian pdf as it is assumed in some applications. We apply our framework to edge detection and develop a locally adaptive algorithm that is based on a probabilistic decision rule. We show in an objective evaluation that this new edge detector performs better than prior art edge detectors. This proves the benefits of the probabilistic characterization of the local neighborhood as a tool to improve applications that involve range images. [less ▲]

Detailed reference viewed: 34 (7 ULg)
Full Text
Peer Reviewed
See detailMathematical bias in assessment of placental residual blood volume
RIGO, Vincent ULg; LEFEBVRE, Caroline ULg; Kalenga, Masendu ULg

in Journal of Perinatology (in press)

This letter suggest a new computation of the relative placental residual blood volume.

Detailed reference viewed: 29 (1 ULg)
Full Text
Peer Reviewed
See detailEffect of different parameters on composition of volatile components of Myristica fragrans seeds extracted by hydrodistillation assisted by microwave and head-space solid-phase microextraction
Bouchachia, C; Benkaci-Ali, F; Eppe, Gauthier ULg et al

in Journal of Essential Oil Research (in press)

Hydrodistillation assisted by microwave (HDAM) and Head space solid phase micro-extraction (HSSPME) of Myristica fragrans houtt (MF) were investigated. A kinetic study was performed for MF seeds using two ... [more ▼]

Hydrodistillation assisted by microwave (HDAM) and Head space solid phase micro-extraction (HSSPME) of Myristica fragrans houtt (MF) were investigated. A kinetic study was performed for MF seeds using two techniques (HDAM: Hydrodistillation assisted by microwave and SDAM: steam distillation assisted by microwave). The effect of the cryogenic grinding (CG) showed differences in yields and composition of volatile oils compared to the simple grinding (SG). HDAM–SG (3.4%) and SDAM–SG (2.55%) allowed extraction of substantial amounts of volatile oils in less time compared with HDAM–CG (4.75%) and SDAM–CG (3.8%). The kinetic study (differential and accumulated yields) of essential oil extraction was quantitatively and qualitatively performed showing a significant variation of composition with the extraction time, especially for accumulated yields such as sabinene (31.48–38.78%), α-pinene (12.74–14.09%) and β-pinene (10.01–12.11%). Similarly, the HS-SPME–GC–MS analysis showed also a significant variation of MF seeds volatile composition according some parameters as the type of fibre coating (PDMS: Polydimethylsiloxane and PDMS– DVB: Polydimethylsiloxane divenylbenzene), particle size, grinding mode and the mass used. The chemical groups (monoterpenoids, aliphatic and aromatic alcohols and esters) showed specific behaviour in SPME analysis. SPME sampling parameters were optimized for these components. [less ▲]

Detailed reference viewed: 30 (3 ULg)
Full Text
Peer Reviewed
See detailPrediction-focused approaches: an opportunity for hydrology
Hermans, Thomas ULg

in Groundwater (in press)

Our ability to predict the evolution of complex hydrological system is fundamental. For decades, such problems have been solved by calibrating a conceptual model of the subsurface to fit data ... [more ▼]

Our ability to predict the evolution of complex hydrological system is fundamental. For decades, such problems have been solved by calibrating a conceptual model of the subsurface to fit data. Unfortunately, model calibration does not allow a realistic uncertainty quantification, whereas stochastic inversion is often computationally prohibitive. In this contribution, prediction-focused approaches (PFAs) are introduced to overcome those main shortcomings. This new paradigm focused on generating predictions directly from the data instead of generating models. A group of prior models is used to generate the data and the prediction in order to derive a direct relationship between both types of variables. The advantages, limitations and research perspectives are discussed. [less ▲]

Detailed reference viewed: 61 (10 ULg)
Full Text
Peer Reviewed
See detailChemotherapy induces alternative transcription and splicing: Facts and hopes for cancer treatment
Lambert, Charles ULg; Garbacki, Nancy ULg; Colige, Alain ULg

in International Journal of Biochemistry and Cell Biology (in press)

Detailed reference viewed: 28 (3 ULg)