Last 7 days
Bookmark and Share    
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: 13 (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: 19 (1 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: 38 (3 ULg)
Full Text
Peer Reviewed
See detailAnti-Salmonella activity and probiotic trends of Kluyveromyces marxianus S-2-05 and Kluyveromyces lactis S-3-05 isolated from a French cheese named "Tomme d'Orchies"
Ceugniez, Alexandre; Coucheney, Françoise; Jacques, Philippe et al

in Research in Microbiology (in press)

Kluyveromyces marxianus S-2-05 and Kluyveromyces lactis S-3-05 were recently isolated from a traditional French cheese, Tomme d'Orchies, and characterized here for their advantages using a different ... [more ▼]

Kluyveromyces marxianus S-2-05 and Kluyveromyces lactis S-3-05 were recently isolated from a traditional French cheese, Tomme d'Orchies, and characterized here for their advantages using a different application perspective. First, we established their anti-Salmonella activity and downregulation of the virulence sopD gene of Salmonella enterica subsp. enterica serovar Typhimurium, mainly in the presence of K. marxianus S-2-05. In addition to their antagonism, these non-Saccharomyces yeasts were able to survive under conditions mimicking the gastrointestinal environment and to form biofilms on an abiotic device such as polystyrene. These strains also displayed highly hydrophilic cell wall surfaces properties and capacity for adhesion to intestinal Caco-2 cells, thus enhancing their potential as probiotic strains. [less ▲]

Detailed reference viewed: 25 (3 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: 17 (2 ULg)
Full Text
Peer Reviewed
See detailOn the phase behaviour of oxetane-CO2 and propargylic alcohols-CO2 binary mixtures by in situ infrared micro-spectrometry
Zaky, Mohamed; Boyaval, Amélie ULg; Grignard, Bruno ULg et al

in Journal of Supercritical Fluids (in press)

The phase behaviour of carbon dioxide/propargylic alcohols and carbon dioxide/oxetanes mixtures has been investigated using in-situ FTIR microspectrometry that allows us determining the evolution of the ... [more ▼]

The phase behaviour of carbon dioxide/propargylic alcohols and carbon dioxide/oxetanes mixtures has been investigated using in-situ FTIR microspectrometry that allows us determining the evolution of the concentration of each component in the liquid phase as a function of temperature and pressure. It was at the same time possible to look inside the cell and to visualize the expansion of the liquid phase during the increase of the pressure. The measurements were performed at three different temperatures (40, 70 and 100◦C) for pressures ranging between 0.1 and 15 MPa. Propargylic alcohol (PA), 2-methyl-3-butyn-2-ol (MBOL), 3-butyn-1-ol (BOL) and trimethylene oxide (TMO) were selected as these molecules are used in the synthesis of cyclic or polycarbonates by coupling with CO2. Thus, we determined the CO2 sorption and the concentration of the substrate in the liquid phase. Thanks to these measurements, we established the pressure-composition phase diagram for the liquid phase of these substrate/CO2 binary mixtures. [less ▲]

Detailed reference viewed: 22 (8 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: 9 (0 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: 20 (1 ULg)
See detailLa Cour pénale internationale à l'épreuve du droit à la liberté
Deprez, Christophe ULg

Book published by Anthemis (in press)

Cet ouvrage procède d’une prémisse bien connue : le droit pénal, s’il contribue au maintien des droits essentiels de chacun, implique en retour l’exercice d’un certain pouvoir de contrainte sur les ... [more ▼]

Cet ouvrage procède d’une prémisse bien connue : le droit pénal, s’il contribue au maintien des droits essentiels de chacun, implique en retour l’exercice d’un certain pouvoir de contrainte sur les individus, et constitue ainsi un danger à l’égard de ces mêmes droits et libertés. La justice pénale internationale n’est, pas plus que les tribunaux nationaux, épargnée par ce « paradoxe pénal ». C’est cette conviction qui a inspiré le présent ouvrage. Son ambition est de mettre l’action de la Cour pénale internationale à l’épreuve de l’exigence de liberté. Le droit et la pratique de la Cour pénale internationale y sont ainsi successivement confrontés à sept applications concrètes de cette garantie essentielle : le droit d’être informé des raisons de sa privation de liberté, le droit d’être présenté à un juge, le droit de contester le bien-fondé de sa privation de liberté, le droit à la liberté stricto sensu, le droit d’être libéré pour raisons humanitaires, le droit d’être jugé rapidement ou libéré au cours de la procédure et, enfin, le droit à une réparation appropriée. [less ▲]

Detailed reference viewed: 21 (0 ULg)
Peer Reviewed
See detailArticle 21(3) of the ICC Statute and 'Internationally Recognised Human Rights' as a Source of Mandatory Judicial Dialogue
Deprez, Christophe ULg

in Lobba, Paolo; Mariniello, Triestino (Eds.) Judicial Dialogue on Human Rights: The Practice of International Criminal Tribunals (in press)

It is a common view that a strict distinction should be maintained between human rights case law and human rights law proper. The authority of human rights norms would be general, while human rights ... [more ▼]

It is a common view that a strict distinction should be maintained between human rights case law and human rights law proper. The authority of human rights norms would be general, while human rights jurisprudence would only consist of the casuistic application of these norms to a specific case. This chapter seeks to nuance this view, with specific reference to the cross-fertilisation phenomenon before the International Criminal Court. It shows that, in its early practice, the permanent ICC has repeatedly relied on human rights case law, not because it was merely choosing to do so, but more particularly, because it considered the relevant findings to be binding as 'internationally recognised human rights' in the meaning of Article 21(3) of the Rome Statute. By focusing on these instances of mandatory reference to the practice of human rights bodies, this chapter also contributes to the existing literature on 'internationally recognised human rights', through an account of the ICC's own perspective on this crucial notion. [less ▲]

Detailed reference viewed: 27 (1 ULg)
Full Text
Peer Reviewed
See detailLa fonction des niches dans les bibliothèques romaines
Palamidis, Alaya ULg

in Amoroso, Nicolas; Cavalieri, Marco; Meunier, Nicolas (Eds.) Locum Armarium Libros: Livres et bibliothèques dans l'Antiquité (in press)

In Celsus' and Rogatianus' libraries – respectively at Ephesus and Timgad and the function of which is attested by inscriptions — bookcases are usually reconstructed in the niches. These examples have ... [more ▼]

In Celsus' and Rogatianus' libraries – respectively at Ephesus and Timgad and the function of which is attested by inscriptions — bookcases are usually reconstructed in the niches. These examples have been used to identify other buildings which contained niches as libraries. However, Lora Johnson, in her 1984 Ph.D. thesis, rightfully questioned such an interpretation of the niches. The reconstruction of bookcases seems implausible, since the access to them would have been either impossible, or at least very difficult. The niches were more likely used for the display of statues. Similar arrangements can be found in various buildings, such as nymphaea or the scaenae frontes of theatres. Thus, the mere presence of niches inside a building does not allow to speculate about its function. This article aims at drawing attention to Lora Johnson’s work, the conclusions of which seem to be confirmed by new archaeological studies. [less ▲]

Detailed reference viewed: 27 (3 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: 24 (1 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: 32 (2 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: 23 (1 ULg)
Full Text
Peer Reviewed
See detailA Model Reduction Approach for Simulation of Long-term Voltage and Frequency Dynamics
Weckesser, Johannes ULg; Franz, Valeri; Grebe, Eckhard et al

in 12th IEEE Power and Energy Society PowerTech Conference, PowerTech Manchester 2017 (in press)

This paper presents a novel approach, which identifies a buffer zone around a given study system and replaces the external system with an equivalent. The aim is to obtain a reduced system, which is ... [more ▼]

This paper presents a novel approach, which identifies a buffer zone around a given study system and replaces the external system with an equivalent. The aim is to obtain a reduced system, which is suitable for assessment of long-term voltage and frequency dynamics in the study system. First, the proposed methodology ensures that all components, which are impacting the voltage profile of the study system, are included in the buffer zone. For that purpose, the propagation of reactive power changes from the boundary of the study system into the external system are used in a modified depth-first search algorithm to identify the buffer zone. Second, the external system is replaced with equivalents accounting for inertia and primary frequency control effects. The proposed method was successfully tested on a modified version of the ENTSO-E Dynamic Study Model. [less ▲]

Detailed reference viewed: 48 (12 ULg)
Full Text
Peer Reviewed
See detailUltrasonic roll bite measurements in cold rolling - roll stress and deformation
Carretta, Yves; Hunter, Andrew; Boman, Romain ULg et al

in Journal of Materials Processing Technology (in press)

In cold rolling of thin metal strip, contact conditions between the work rolls and the strip are of great importance: roll deformations and their effect on strip thickness variation may lead to strip ... [more ▼]

In cold rolling of thin metal strip, contact conditions between the work rolls and the strip are of great importance: roll deformations and their effect on strip thickness variation may lead to strip flatness defects and thickness inhomogeneity. To control the process, several online measurements are usually carried out such as the rolling load, forward slip and strip tensions at each stand. Shape defects of the strip are usually evaluated after the last stand of a rolling mill thanks to a flatness measuring roll. However, none of these measurements is made within the roll bite itself due to the harsh conditions taking place in that area. This paper presents a sensor capable of monitoring roll deformations as well as roll radial stresses in situ and in real time. The sensor emits ultrasonic pulses that reflect from the roll surface. The time-of-flight (ToF) of the pulses is recorded during the testing. The sensor system was incorporated into a work roll and tested on a pilot rolling mill. Measurements were taken as steel strips were rolled under different strip elongation. Roll deformation and radial stresses obtained from the experimental data are in good agreement with numerical results computed with a cold rolling model developed in non-linear Finite Element software. [less ▲]

Detailed reference viewed: 21 (5 ULg)
Full Text
Peer Reviewed
See detailComputing flooding of crossroads with obstacles using a 2D numerical model (Discussion)
Bruwier, Martin ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in Journal of Hydraulic Research (in press)

Based on an operational 2D shallow-water model, the Authors computed subcritical dividing flow at a three-branch crossroad, considering obstacles located at different positions. The numerical predictions ... [more ▼]

Based on an operational 2D shallow-water model, the Authors computed subcritical dividing flow at a three-branch crossroad, considering obstacles located at different positions. The numerical predictions were compared to observations from Mignot et al. (2013). Two issues are addressed here, related respectively to the efficiency and relevance of the turbulence model, and to the representation of the obstacles in operational flood models. [less ▲]

Detailed reference viewed: 36 (9 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: 24 (2 ULg)