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See detailTemperature and moisture storage in crop-based materials: Modelling a straw bale wall subject to a thermal shock
Dubois, Samuel ULg; Evrard, Arnaud ULg; Blecker, Christophe ULg et al

in Jounal of Building Physics (2016)

Modelling the hygrothermal behaviour of crop-based insulation products is essential to assess their impact on the energy performance of the building, predict indoor climate conditions, and prevent any ... [more ▼]

Modelling the hygrothermal behaviour of crop-based insulation products is essential to assess their impact on the energy performance of the building, predict indoor climate conditions, and prevent any risk of unexpected degradation. Traditionally, transient numerical models that predict internal conditions of construction materials consider that the variation of moisture storage with temperature is negligible although the sorp- tion behaviour is known to be temperature dependent. This paper investigates this par- ticular effect for crop-based materials and uses a refinement of standard mathematical representations. For this purpose, the effects of a thermal shock on the evolution of hygrothermal conditions inside a straw-bale wall are studied with several versions of a flexible research model. The latter is capable of incorporating the temperature depen- dency of the sorption curve with both a physically-based and an empirical description. A large climate chamber is used to gather experimental data and is able to host a full- size straw bale prefabricated panel. Internal conditions of straw bales are obtained with proper sensors bars. Results show that when large temperature gradients occur in a crop-based material, a model that considers temperature effect on moisture storage enhances greatly the prediction of internal conditions. [less ▲]

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See detailDementia-specific quality of life instruments: a conceptual analysis
Missotten, Pierre ULg; Dupuis, Gilles; Adam, Stéphane ULg

in International Psychogeriatrics (2016)

Background: Over the past 20 years, many researchers have worked in developing various methods for measuring quality of life (QoL) of people with dementia. The aim of this review is to develop the ... [more ▼]

Background: Over the past 20 years, many researchers have worked in developing various methods for measuring quality of life (QoL) of people with dementia. The aim of this review is to develop the conceptual frameworks of the dementia-specific QoL instruments, to identify their evolution over time and to provide elements of reflection on the QoL concept in dementia and its evaluation. Method: An electronic search was conducted on PsycINFO and MEDLINE databases, from January 1985 to June 2015 using a combination of key words that include quality of life, dementia and review. Result: The analysis of the conceptual frameworks of the eighteen selected dementia-specific QoL tools shows a great diversity in: (1) the QoL definitions (e.g. health-related QoL definitions, QoL definitions based on Lawton’s work or similar to this latter); (2) the theoretical QoL models (e.g. Lawton’ work and modified Lawton, adaptation, personhood); (3) the domains and dimensions; (4) the way to construct the instrument (e.g. development based on literature, opinion of the experts) and (5) the items’ formulation (e.g. use of criterion of intensity or frequency). Conclusion: There are different conceptual frameworks in the dementia-specific QoL measures with improvements over time (e.g. inclusion of interesting concepts such as adaptation, taking into account the views of patients themselves). Each of the conceptual parameters (definitions, models, domains and dimensions) is discussed to identify the scales that are conceptually the strongest. Through their review, recommendations for future instrument refinement and development are discussed and a new QoL definition is proposed. [less ▲]

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See detailJamaica Kincaid's A Small Place
Munos, Delphine ULg

in Helen Goethals (Ed.) A Companion to Commonwealth Studies: Cultural Relations since 1884 (2016)

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See detailClassification of riparian forest species and health condition using multi-temporal and hyperspatial imagery from unmanned aerial system
Michez, Adrien ULg; Piégay, Hervé; Lisein, Jonathan ULg et al

in Environmental Monitoring and Assessment (2016), 188(3),

Riparian forests are critically endangered many anthropogenic pressures and natural hazards. The importance of riparian zones has been acknowledged by European Directives, involving multi-scale monitoring ... [more ▼]

Riparian forests are critically endangered many anthropogenic pressures and natural hazards. The importance of riparian zones has been acknowledged by European Directives, involving multi-scale monitoring. The use of this very high resolution and hyperspatial imagery in a multi-temporal approach is an emerging topic. The trend is reinforced by the recent and rapid growth of the use of the unmanned aerial system (UAS), which has prompted the development of innovative methodology. Our study proposes a methodological framework to explore how a set of multi-temporal images acquired during a vegetative period can differentiate some of the deciduous riparian forest species and their health conditions. More specifically, the developed approach intends to identify, through a process of variable selection, which variables derived from UAS imagery and which scale of image analysis are the most relevant to our objectives. The methodological framework is applied to two study sites to describe the riparian forest through two fundamental characteristics: the species composition and the health condition. These characteristics were selected not only because of their use as proxies for the riparian zone ecological integrity but also because of their use for river management. The comparison of various scales of image analysis identified the smallest OBIA objects (ca. 1 m²) as the most relevant scale. Variables derived from spectral information (bands ratio's) were identified as the most appropriate, followed by variables related to the vertical structure of the forest. Classification results show good overall accuracies for the species composition of the riparian forest (five classes, 79.5 and 84.1 % for Site 1 and Site 2). The classification scenario regarding the health condition of the black alders of the Site 1 performed the best (90.6 %). The quality of the classification models developed with a UAS-based, cost-effective, and semi-automatic approach competes successfully with those developed using more expensive imagery, such as multispectral and hyperspectral airborne imagery. The high overall accuracy results obtained by the classification of the diseased alders open the door to applications dedicated to monitoring of the health conditions of riparian forest. Our methodological framework will allow UAS users to manage large imagery metrics datasets derived from those dense time series. [less ▲]

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See detailThe role of active site flexible loops in catalysis and of zinc in conformational stability of Bacillus cereus 569/H/9 beta-lactamase.
Montagner, Caroline ULg; Nigen, Michaël; Jacquin, Olivier et al

in Journal of Biological Chemistry (2016)

Metallo-beta-lactamases catalyse the hydrolysis of most beta-lactam antibiotics and hence represent a major clinical concern. The development of inhibitors for these enzymes is complicated by the ... [more ▼]

Metallo-beta-lactamases catalyse the hydrolysis of most beta-lactam antibiotics and hence represent a major clinical concern. The development of inhibitors for these enzymes is complicated by the diversity and flexibility of their substrate binding sites, motivating research into their structure and function. In this study, we examined the conformational properties of the Bacillus cereus beta-lactamase II in the presence of chemical denaturants using a variety of biochemical and biophysical techniques. The apoenzyme was found to unfold cooperatively, with a Gibbs free energy of stabilization (DeltaG degrees ) of 32 +/- 2 kJ.mol11. For holoBcII, a first non-cooperative transition leads to multiple interconverting native-like states, in which both zinc atoms remain bound in an apparently unaltered active site and the protein displays a well-organized compact hydrophobic core with structural changes confined to the enzyme surface, but with no catalytic activity. 2D NMR data revealed that the loss of activity occurs concomitantly with perturbations in two loops that border the enzyme active site. A second cooperative transition, corresponding to global unfolding, is observed at higher denaturant concentrations, with DeltaG degrees value of 65 +/- 1.4 kJ.mol11. These combined data highlight the importance of the two zinc ions in maintaining structure as well as a relatively well-defined conformation for both active site loops in order to maintain enzymatic activity. [less ▲]

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See detailEscribir el presente histórico mexicano: narrar desde narcolandia
Vanden Berghe, Kristine ULg

in Studi Ispanici (2016), XLI

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See detailLe Chèque Habitat en Région Wallonne: premier aperçu
Bourgeois, Marc ULg; Voisin, Fanny ULg

in Chroniques notariales. Volume 63 (2016)

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See detailOrganic farming and the greening of the common Agricultural Policy made Walloon agriculture become more environment friendly in 2015
Burny, Philippe ULg; Petrescu, Dacinia Crina; Petrescu-Mag, Ruxandra Malina

in Babes-Bolyai University (Ed.) 11th International Conference on "Environmental Legislation, Safety Engineering and Disaster Management": book of abstracts (2016)

In Wallonia, organic farming continues to increase its share of agricultural activities, the number of organic farmers exceeding for the first time 10% of the total number of farmers in 2014, with 8.6% of ... [more ▼]

In Wallonia, organic farming continues to increase its share of agricultural activities, the number of organic farmers exceeding for the first time 10% of the total number of farmers in 2014, with 8.6% of the total agricultural area. Meadows represent 83% of the organic areas, general crops 15% and vegetables 1%. The number of cattle heads is still increasing, while poultry and laying hen recorded a significant progress during the last years. Organic products consumption is also increasing and the market share of organic products in food products reached 2.3% in 2014. On the other hand, the implementation of the new Common Agricultural Policy, and particularly its green payment, obliges 50% of Walloon farmers to practice crop diversification and 46% to have at least 5% of ecological focus area within their arable land in 2015, which represents more than 24,000 ha. So, organic farming and ecological focus areas do have today a significant share of the Walloon agricultural area, leading to a more sustainable agriculture. [less ▲]

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See detailCopper tolerance of three Crotalaria species from southeastern D.R. Congo at the early development stage
Boisson, Sylvain ULg; Le Stradic, Soizig ULg; Commans, Morgane et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment (2016), 20(2), 151-160

Description of the subject. Microevolutionary processes in metallophytes established on copper enriched soils can lead to a diversity of plant species showing distinct tolerance capacities among genus ... [more ▼]

Description of the subject. Microevolutionary processes in metallophytes established on copper enriched soils can lead to a diversity of plant species showing distinct tolerance capacities among genus. Researches about the relationship between these endangered plants and soil copper concentrations are critical in order to improve ex situ conservation methods in southeastern Democratic Republic of Congo (Katangan Copperbelt). Objectives. The aim of the study was to test the effect of copper on the germination and root elongation of three Crotalariaspecies naturally occurring along a natural copper gradient. The hypothesis is that copper concentrations have different effects on germination and root elongation according to the species of Crotalaria genus.Method. Three species were selected: Crotalaria cobalticola, Crotalaria peschiana and Crotalariacornetii, occurring on soils with the highest to the lowest copper concentrations respectively. Germination and root elongation tests were performed in vitro (MS vitamin-enriched medium) in six copper mediums ranging from 0 to 125 μM Cu2+. Results. No significant differences in germination percentage were observed according to the copper concentrations. Crotalaria cornetii had the lowest germination percentage. Root elongation of C. peschiana did not differ with copper concentration, but root elongation of C. cobalticola was higher at the greatest copper concentration (125 μM Cu2+). Conclusions. Even if C. cobalticola presented better growth at highest Cu concentrations, it appeared that C. cobalticola and C. peschiana do not require copper for their early stages of development and could thus be conserved in non-contaminated substrate. Crotalariacornetii seemed to present a physical seed dormancy. [less ▲]

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See detailLa voix universelle kantienne, une voix ordinaire ? Cavell lecteur de Kant
Gauvry, Charlotte ULg

in Ehrsam, Raphaël (Ed.) Les usages de Kant dans la philosophie du langage contemporaine (2016)

Dans l’héritage des travaux de Ludwig Wittgenstein et de John Austin, Stanley Cavell présente une conception du langage radicalement originale sur la scène philosophique contemporaine dans la mesure où ... [more ▼]

Dans l’héritage des travaux de Ludwig Wittgenstein et de John Austin, Stanley Cavell présente une conception du langage radicalement originale sur la scène philosophique contemporaine dans la mesure où elle entend mettre l’accent sur le fait que le langage est toujours prononcé par une voix humaine au sein d’une « forme de vie », une voix rationnelle en tant que normée dans son accord avec les autres voix. L’enjeu de cet article est d’explorer la portée de l’influence kantienne sur cette conception de la normativité de la voix. Nous montrons que le rapport de Cavell à Kant est profondément ambivalent dans la mesure où Cavell présente explicitement sa démarche comme « transcendantale » et s’intéresse de près au concept de « voix universelle » de la Critique de la faculté de juger. Mais il dénonce tout aussi radicalement la conception de la rationalité, et partant de la normativité, véhiculée par la deuxième critique. [less ▲]

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See detailPhénoménologie et grammaire
Leclercq, Bruno ULg; Gauvry, Charlotte ULg

in Bulletin d'Analyse Phénoménologique (2016)

Dans le prolongement des travaux sur l’analyticité formelle de Bernard Bolzano, la phénoménologie naissante se caractérise par une attention à la structuration du sens selon des principes purement formels ... [more ▼]

Dans le prolongement des travaux sur l’analyticité formelle de Bernard Bolzano, la phénoménologie naissante se caractérise par une attention à la structuration du sens selon des principes purement formels qui conditionnent la possibilité même de la signification. Husserl par excellence, dans la quatrième Recherche Logique, dégage l’idée d’une grammaire pure régissant les conditions du sens possible (par opposition au non-sens) avant même qu'intervienne la question logique de la consistance (par opposition au contresens). Ce niveau grammatical s’articule autour de catégories de la signification (matière nominale, matière adjectivale, ...) et des lois de leur combinaison, catégories et lois qui peuvent être dégagées par des tests de substituabilité « salva significatione ». Cette idée d’une structure purement grammaticale des significations est aussi explorée par d’autres disciples de Brentano comme Anton Marty, lequel prend part au débat sur la possibilité des « propositions sans sujets » dès ses articles de 1884-1896. Or cette approche formelle de la grammaire qui a réglé l’émergence de la phénoménologie ne va pas sans poser de questions. L’enjeu du numéro est d’interroger le type de formalisme qui est en jeu à l’origine de la phénoménologie pour en préciser les sens et en tester la longévité. La question se pose tout d’abord de savoir si l’hypothèse d’une légalité purement grammaticale est pertinente et quels rapports elle entretiendrait avec 1) la légalité spécifiquement linguistique liée à l'expression de ces significations dans telle ou telle langue ou même dans le langage en général. Les catégories de signification et les lois de leur combinaison précèdent-elles tout langage ? 2) la légalité ontologique qui est celle des objets pensés à travers ces significations. Les objets imposent-ils leur structure aux significations à travers lesquelles on les pense ou, au contraire, les significations imposent-elles leur structure aux objets pensés à travers elles ? 3) la légalité phénoménale qui régit plus particulièrement l'expérience sensible (synthèses passives, etc.). 4) Par ailleurs, on peut se demander si cette légalité grammaticale dégagée par Husserl est purement syntaxique (c’est-à-dire qu’elle se définirait essentiellement par opposition aux combinaisons de signification insensées parce que syntaxiquement mal formées comme « vert est ou ») ou si elle est également sémantique (c’est-à-dire qu’elle se définirait également par opposition aux combinaisons de signification insensées parce qu’absurdes comme « le nombre 2 est vert »). [less ▲]

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See detailIntroduction
Gsir, Sonia ULg; Martiniello, Marco ULg; Bousetta, Hassan ULg et al

in Gsir, Sonia; Martiniello, Marco; Bousetta, Hassan (Eds.) et al Villes connectées. Pratiques transnationales, dynamiques identitaires et diversité culturelle (2016)

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See detailFluorodeoxyglucose F Positron Emission Tomography Coupled With Computed Tomography in Suspected Acute Renal Allograft Rejection.
Lovinfosse, P.; Weekers, L.; Bonvoisin, C. et al

in American Journal of Transplantation (2016)

Management of kidney transplant recipients (KTRs) with suspected acute rejection (AR) ultimately relies on kidney biopsy; however, noninvasive tests predicting nonrejection would help avoid unnecessary ... [more ▼]

Management of kidney transplant recipients (KTRs) with suspected acute rejection (AR) ultimately relies on kidney biopsy; however, noninvasive tests predicting nonrejection would help avoid unnecessary biopsy. AR involves recruitment of leukocytes avid for fluorodeoxyglucose F18 (18 F-FDG), thus 18 F-FDG positron emission tomography (PET) coupled with computed tomography (CT) may noninvasively distinguish nonrejection from AR. From January 2013 to February 2015, we prospectively performed 32 18 F-FDG PET/CT scans in 31 adult KTRs with suspected AR who underwent transplant biopsy. Biopsies were categorized into four groups: normal (n = 8), borderline (n = 10), AR (n = 8), or other (n = 6, including 3 with polyoma BK nephropathy). Estimated GFR was comparable in all groups. PET/CT was performed 201 +/- 18 minutes after administration of 3.2 +/- 0.2 MBq/kg of 18 F-FDG, before any immunosuppression change. Mean standard uptake values (SUVs) of both upper and lower renal poles were measured. Mean SUVs reached 1.5 +/- 0.2, 1.6 +/- 0.3, 2.9 +/- 0.8, and 2.2 +/- 1.2 for the normal, borderline, AR, and other groups, respectively. One-way analysis of variance demonstrated a significant difference of mean SUVs among groups. A positive correlation between mean SUV and acute composite Banff score was found, with r2 = 0.49. The area under the receiver operating characteristic curve was 0.93, with 100% sensitivity and 50% specificity using a mean SUV threshold of 1.6. In conclusion, 18 F-FDG PET/CT may help noninvasively prevent avoidable transplant biopsies in KTRs with suspected AR. [less ▲]

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See detailLes catégories au seuil de la phénoménologie
Gauvry, Charlotte ULg; Fagniez, Guillaume

in Etudes Philosophiques (Les) (2016)

Le tournant du XXe siècle est marqué par un retour de la problématique catégoriale sur le devant de la scène philosophique, que ce soit chez Franz Brentano et ses élèves, chez Wilhelm Dilthey, chez les ... [more ▼]

Le tournant du XXe siècle est marqué par un retour de la problématique catégoriale sur le devant de la scène philosophique, que ce soit chez Franz Brentano et ses élèves, chez Wilhelm Dilthey, chez les Néokantiens de l’école de Bade, ou chez les premiers pionniers de la phénoménologie. Tant et si bien qu’une certaine philosophie (celle d’Emil Lask par excellence) a pu se présenter comme une doctrine des catégories à part entière. L’enjeu de ce numéro est d’interroger la place historique et le rôle conceptuel qu’ont joué ces questions formelles dans l’émergence de la phénoménologie. Kant avait certes renoué avec la question aristotélicienne des catégories pour postuler l’existence de « purs concepts de l’entendement » ou « catégories », seuls susceptibles de « fournir de l’unité aux diverses représentations dans un jugement et [de] donner aussi à la simple synthèse de diverses représentations dans une intuition une unité » (KRV, §10). L’intérêt proto-phénoménologique pour les catégories se présente-t-il cependant comme un retour, par-delà l’idéalisme allemand, à cette problématique transcendantale kantienne ou bien plutôt comme un retour, par-delà Kant lui-même, à la question aristotélicienne ? Si les philosophes du début XXe se sont ressaisis de la question des catégories, il semble qu’ils aient à tout le moins reformulé, voire abandonné la méthode de la « déduction ». C’est ce travail de reformulation de la déduction transcendantale que le numéro entend également clarifier. Peut-on encore dire que ces catégories sont « déduites » des formes logiques du jugement, des objets logiques ou du mouvement même de la vie ? S’il y a lieu de mettre au jour un processus « génétique » de la catégorie, quelles sont les implications d’un tel déplacement relativement à la validité du catégorial ? Plus généralement, c’est le statut même de ces « catégories » qui sera analysé. Leur domaine d’application redéfini, peut-on les déterminer comme des concepts purs transcendantaux susceptibles d’unifier l’expérience sensible ? Les catégories ne doivent-elles pas plutôt être repensées comme des formes logiques, sémantiques ou même ontologiques ? Ainsi, c’est l’enjeu stratégique de la résurgence de cette problématique catégoriale, et ses répercussions directes sur l’émergence de la phénoménologie naissante (husserlienne et heideggérienne) que ce numéro interrogera. [less ▲]

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See detailTargeted control of the saddle gall midge, Haplodiplosis marginata (von Roser) (Diptera: Cecidomyiidae), and the benefits of good control of this pest to winter wheat yield
Censier, Florence ULg; Chavalle, Sandrine ULg; San Martin y Gomez, Gilles et al

in Pest Management Science (2016)

BACKGROUND: Since 2010, there has been a resurgence of the saddle gall midge, Haplodiplosis marginata (von Roser), in Belgium and several other European countries, with this pest sometimes causing severe ... [more ▼]

BACKGROUND: Since 2010, there has been a resurgence of the saddle gall midge, Haplodiplosis marginata (von Roser), in Belgium and several other European countries, with this pest sometimes causing severe damage in cereals. In 2012 and 2013, field trials were conducted in heavily infested fields to assess its impact on winter wheat crops and to determine efficient ways of dealing with severe infestations. RESULTS: Crop exposure to H. marginata varied with the different protection methods tried. These methods included one to four successive applications of lambda-cyhalothrin. Yield losses were significant, reaching 6% in 2012 and as high as 15% in 2013, and these losses were linearly related to the number of galls on stems. CONCLUSION: The trials showed that insecticide applications needed to be synchronized with H. marginata flight peaks and to target the egg hatching period. They also revealed that insecticides applied to coincide with the first flight could, in humid conditions, also reach the larvae close to the soil surface, prior to their pupation. [less ▲]

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See detailcompte rendu de : Lenglet-Dufresnoy, Écrits inédits sur le roman. Édité par J. Herman et J. Cormier. Oxford, Voltaire Foundation, 2014.
Decoster, Sara ULg

in Revue d'Histoire Littéraire de la France (2016), 116(1), 222-224

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