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See detailSpread of hatch and delayed feed access affect post hatch performance of female broiler chicks up to day 5.
Wang, Y.; Li, Yongzhen ULg; Willems, E. et al

in Animal (2014)

It is not rare that newly hatched chicks remain without feed for about 24 to 48 h before they are placed on farms due to a series of logistic operations. Furthermore, the spread in hatching time can also ... [more ▼]

It is not rare that newly hatched chicks remain without feed for about 24 to 48 h before they are placed on farms due to a series of logistic operations. Furthermore, the spread in hatching time can also mount up to 30 to 48 h for late v. early hatchers. In other words, the practice is a complex combination of spread of hatch and delayed feed access. The present study was aimed to investigate the combined effects of hatching time with a delay in feed access of 48 h, starting from their hatch-time (biological age). When chicks had access to feed immediately after hatch, late hatchers had a higher feed intake and relative growth rate up to day 5 compared with their early hatched counterparts. Feed deprivation during the first 48 h resulted in retarded early growth rate, which was further aggravated by an impaired feed intake after refeeding. In addition, the differential effects of hatching time on relative growth rate and feed intake observed in immediately fed chicks were eliminated by the 48 h feed delay. The yolk utilization after hatch was faster for the late hatchers up to biological day 2 regardless of the feeding treatments. Hatching muscle glycogen content was higher in the late hatchers compared with that of their early counterparts at hatch and at biological day 2 independent of feeding treatment. Moreover, the liver glycogen content of the late hatchers was also higher at hatch. For the immediately fed chicks, the proportional breast muscle weight of the late hatchers was higher at biological day 2 and 5. For the starved chicks, on the other hand, this effect was only observed after they had access to feed (biological day 5). The different plasma T3 levels at hatch may have contributed to the different post hatch performance. It is concluded that the spread of hatch influenced post hatch performance, especially appetite and growth at least until day 5. Moreover, the delay in feed access interacted with the hatching time and caused adverse effects on the post hatch performance. [less ▲]

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See detailDe l'Anonyme à Jamblique: ou de l'usage politique de la richesse
Gavray, Marc-Antoine ULg

in Helmer, Étienne (Ed.) Richesse et Pauvreté chez les philosophes grecs (2014)

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See detailReconciling Plato's and Aristotle's Cosmologies. Attempts at harmonization in Simplicius
Gavray, Marc-Antoine ULg

in Strobel, Benedikt (Ed.) Die Kunst der philosophischen Exegese bei den Antiken Platon- und Aristoteles-Kommentatoren (2014)

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See detailHeuristique des frontières
Molina Marmol, Maïté ULg

in Gotovitch, José; Schreiber, Jean-Philippe (Eds.) Anne Morelli, la passion d'agir. Engagement, liberté, fidélité. (2014)

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See detailResistance of through-plate component in beam-to-column joints with circular hollow columns
Hoang, Van Long ULg; Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in Journal of Constructional Steel Research (2014), 92

A configuration of beam-to-column joint with circular hollow section columns is proposed. A vertical plate, called through-plate, passing through the column is used to support the beams. In order to ... [more ▼]

A configuration of beam-to-column joint with circular hollow section columns is proposed. A vertical plate, called through-plate, passing through the column is used to support the beams. In order to facilitate connecting the beams, two horizontal plates, each side of the column, are welded to the upper side of the through-plate. The lower flanges of the steel beams are connected to the horizontal plates by bolts, and the upper flanges are attached to the concrete slab by shear connections. The joint is considered as hinges in the construction phase while semi-rigid and partial strength can be adopted for the joint behaviour during the exploitation time. A development on the through-plate component of the joint is presented in this paper. Global behaviour of the joint under hogging moment and shear force is analysed leading to a mechanical model of the through-plate component. Using the elastic buckling theory of plates, the analytical formulas for critical stresses of the through-plate are obtained. The coefficients taking into account boundary conditions, material plasticity and geometrical imperfection are determined by finite element analysis. The proposed model is validated by experimental results showing a good accuracy. The design guideline for the component is finally provided for the practical purpose. [less ▲]

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See detailOrigine et survivances des symboles (Warburg, Cassirer, Panofsky)
Hagelstein, Maud ULg

Book published by GEORG OLMS VERLAG AG (2014)

L’ouvrage présenté ici entend dégager la spécificité méthodologique du travail de l’historien de l’art et de celui du philosophe face aux productions artistiques. Au départ de cette recherche, une ... [more ▼]

L’ouvrage présenté ici entend dégager la spécificité méthodologique du travail de l’historien de l’art et de celui du philosophe face aux productions artistiques. Au départ de cette recherche, une question aussi générale que décisive : comment aborde-t-on en théoricien une œuvre d’art ? Pour répondre à cette question méthodologique, on a choisi de se consacrer au problème de la tension entre l’approche transcendantale (ou apriorique) et l’approche historique de l’œuvre d’art. L’analyse porte sur trois œuvres restées influentes pour la théorie de l’art actuelle : l’Atlas Mnemosyne (Warburg), La Philosophie des formes symboliques (Cassirer) et La perspective comme forme symbolique (Panofsky). Contemporaines les unes des autres, ces œuvres se sont constituées dans le dialogue entre leurs auteurs. L’originalité épistémologique de ces travaux tient précisément aux solutions imaginées pour concilier les approches historique et transcendantale de l’objet culturel. En outre, il est apparu clairement que ce problème se cristallisait dans la question de l’origine, qui a donc dominé les analyses croisées des différents textes. En effet, le concept d’origine a fait l’objet des critiques les plus intéressantes, de la part de Cassirer notamment, mais aussi des autres philosophes convoqués dans ce travail : Benjamin, Husserl, Derrida, Foucault, Damisch, Didi-Huberman. Les acquis de cette recherche concernent deux aspects indissociables du partage historico-transcendantal. Du point de vue de Cassirer (mais aussi de Husserl), le transcendantal ne peut être pensé indépendamment de toute historicité. C’est l’un des sens de l’ « élargissement » cassirérien du projet de Kant : il faut abandonner la théorie fixiste des catégories transcendantales pour montrer les processus suivant lesquels elles se déploient. Il y a bien une histoire qui conditionne l’apparition de structures universelles. D’un autre point de vue, les historiens de l’art convoqués ici (Warburg, Panofsky) sont inévitablement attachés au devenir historique des événements artistiques qu’ils étudient. Pourtant, leur discipline requiert des principes généraux et des concepts universels : l’histoire de l’art nécessite que l’on dégage des « a priori », même si ceux-ci sont historiques, non purs, dérivés de l’expérience. [less ▲]

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See detailSpatial Planning as a driver of change in mobility and residential energy consumption
Dujardin, Sébastien; Marique, Anne-Françoise ULg; Teller, Jacques ULg

in Energy & Buildings (2014), 68

This paper analyses the impact of territorial structures upon energy consumption in the Walloon Region (Belgium). The rationale for this research is to consider the long-term influence of spatial planning ... [more ▼]

This paper analyses the impact of territorial structures upon energy consumption in the Walloon Region (Belgium). The rationale for this research is to consider the long-term influence of spatial planning decisions upon energy consumption in both residential building stock and home-to-work commuting. The analysis has been conducted on a regional scale (16,844 km2) and includes urban, peri-urban and rural settlements. Those settlements that perform well in mobility also appear to perform well in terms of building energy consumption. Even though this is not generally the case, it further reveals that some rural settlements characterized by low density show good performance in terms of energy efficiency. This permits a much more progressive approach in terms of spatial planning, whereby compact cities may be viewed as part of the solution, albeit not the whole solution. [less ▲]

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See detailLa radicalité politique au bout du travail. Du suicide des ouvriers aux suicides en séries des employés
Cormann, Grégory ULg

in Quaderni : la Revue de la Communication (2014), 83

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See detailModulating effect of COMT genotype on the brain regions underlying proactive control process during inhibition
Jaspar, Mathieu ULg; Genon, Sarah ULg; Muto, Vincenzo ULg et al

in Cortex : A Journal Devoted to the Study of the Nervous System & Behavior (2014), 50

Introduction. Genetic variability related to the catechol-O-methyltransferase (COMT) gene (Val158Met polymorphism) has received increasing attention as a possible modulator of cognitive control functions ... [more ▼]

Introduction. Genetic variability related to the catechol-O-methyltransferase (COMT) gene (Val158Met polymorphism) has received increasing attention as a possible modulator of cognitive control functions. Methods. In an event-related fMRI study, a modified version of the Stroop task was administered to three groups of 15 young adults according to their COMT Val158Met genotype [Val/Val (VV), Val/Met (VM) and Met/Met (MM)]. Based on the theory of dual mechanisms of control (Braver, et al., 2007), the Stroop task has been built to induce proactive or reactive control processes according to the task context. Results. Behavioral results did not show any significant group differences for reaction times but Val allele carriers individuals are less accurate in the processing of incongruent items. fMRI results revealed that proactive control is specifically associated with increased activity in the anterior cingulate cortex (ACC) in carriers of the Met allele, while increased activity is observed in the middle frontal gyrus (MFG) in carriers of the Val allele. Conclusion. These observations, in keeping with a higher cortical dopamine level in MM individuals, support the hypothesis of a COMT Val158Met genotype modulation of the brain regions underlying proactive control, especially in frontal areas as suggested by Braver et al. [less ▲]

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See detailLa mécanique du détail. Approches transversales
Hagelstein, Maud ULg; Belloi, Livio ULg

Book published by Editions de l'Ecole Normale Supérieure de Lyon (2014)

Parce qu’elle a trait aux relations nouées entre les parties et l’ensemble qui les comprend, la question du détail s’investit d’enjeux considérables pour toute tentative de réflexion interdisciplinaire ... [more ▼]

Parce qu’elle a trait aux relations nouées entre les parties et l’ensemble qui les comprend, la question du détail s’investit d’enjeux considérables pour toute tentative de réflexion interdisciplinaire. En effet, dans les disciplines qui s’attachent à rendre un objet visible ou lisible, les théoriciens rencontrent à l’endroit du détail des problèmes voisins, sinon analogues, que nous voudrions ici aborder de front, dans une perspective forcément « rapprochée » et plus que jamais attentive à des objets singuliers, que ceux-ci relèvent de la littérature, du cinéma, de la photographie, de la bande dessinée, de la peinture, de la philosophie, etc. À confronter nos méthodes et les présupposés sur lesquels elles reposent, il nous a semblé possible de cerner plus finement le mode de fonctionnement propre au détail. Certes, chacun fera part ici de ses étonnements particuliers ; de même, chacun sera amené à faire rapport des découvertes enthousiasmantes ou perturbantes qui, dans son domaine spécifique, auront innervé le travail de réflexion. Pourtant, il aurait été inutile de vouloir dresser une simple liste de détails, recueillis au sein d’une compilation bariolée et forcément non exhaustive. Adoptant une perspective plus large, le présent ouvrage vise à une compréhension approfondie de la mécanique du détail (extrait de l'Avant-propos, L. Belloï & M. Hagelstein). [less ▲]

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See detailHand dermometrology
PIERARD, Gérald ULg; Pierard, Sébastien ULg; Franchimont, Claudine ULg et al

in Alikhan, A.; Lachapelle, J.M.; Maibach, M.I. (Eds.) Textbook of hand eczema. (2014)

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See detailLuis Buñuel, au-delà du cinéma
Küpper, Achim ULg

Book published by P.I.E. Peter Lang (2014)

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See detailVerrat am 'Original'? Fälschung, Kopie und Auslöschung in Anthony Minghellas Film "The Talented Mr. Ripley"
Küpper, Achim ULg

in Brittnacher, Hans Richard (Ed.) Der Verräter (2014)

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See detailThe effect of size, weight, body compartment, sex and reproductive status on the bioaccumulation of 19 trace elements in rope-grown Mytilus galloprovincialis
Richir, Jonathan ULg; Gobert, Sylvie ULg

in Ecological Indicators (2014), 36

Numerous trace elements (TEs) can be considered as potential pollutants of the environment, their mining productions and industrial uses increasing worldwide. Their monitoring can be achieved through the ... [more ▼]

Numerous trace elements (TEs) can be considered as potential pollutants of the environment, their mining productions and industrial uses increasing worldwide. Their monitoring can be achieved through the use of bioindicator species, such as the Mediterranean mussel Mytilus galloprovincialis (Lamarck, 1819). That species has been widely used to monitor the chemical pollution of coastal ecosystems by Cr, Ni, Cu, Zn, Cd, Pb, As, Ag and V. Conversely, environmental levels of Be, Al, Fe, Mn, Co, Se, Mo, Sn, Sb and Bi have been little or not monitored so far in mussel watch programs. Bioaccumulation processes of these 19 TEs in rope-grown M. galloprovincialis purchased from a salt pond with good chemical water quality were thus investigated in the present study. Mussels efficiently accumulated the 19 studied TEs. Bioaccumulation processes were driven by numerous mutually dependent biological parameters such as the mussel size and flesh weight, the sex and the reproductive status and the body compartment considered. TE bioaccumulation was a power function of the mussel soft body dry weight; total contents linearly increased with the shell length. Small-size mussels overall concentrated more TEs, with a high inter-individual variability, consequently influencing the modelling of their bioaccumulation in the whole rope population. Although a large range of rope-grown M. galloprovincialis sizes can be used for monitoring purposes, one will thus take care not to use extreme size individuals. The influence of gametogenesis in determining female body higher TE concentrations prior to spawning could not be neglected and varied depending on the element. TEs were preferentially accumulated in the hepatopancreas, except for Zn, Se, Cd and Mo, more concentrated in gills. Gametogenesis did not influence TE distribution between body compartments, but likely diluted their concentrations as a direct consequence of massive reproductive tissue production. So, results from the present study underline the potential use of M. galloprovincialis in the biomonitoring of numerous little studied TEs and give some insights into the decisive role played by some relevant biological parameters in bioaccumulation processes of the 19 investigated TEs in rope-grown mussels. [less ▲]

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See detailThe relevance of the cooperative model in the field of renewable energy
Huybrechts, Benjamin ULg; Mertens de Wilmars, Sybille ULg

in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (2014), 85(2),

This article examines the relevance of the cooperative model in the field of renewable energy (RE). RE sources have been developed since the end of the 1970s and their growth has been expansive since then ... [more ▼]

This article examines the relevance of the cooperative model in the field of renewable energy (RE). RE sources have been developed since the end of the 1970s and their growth has been expansive since then. While social-ecological movements have been instrumental in shifting the public attention towards the need for alternative energies (Sine and Lee, 2009), in most countries the sector has rapidly become dominated by corporate actors experienced in building large-scale RE projects. In an attempt to counter the corporate hegemony and to protect available lands, a range of citizen initiatives have emerged under different forms and names such as community energy groups or renewable energy (source) cooperatives (van der Horst, 2008; Willis and Willis, 2012; Lipp et al., 2012; Schreuer and Weismeier-Sammer, 2010; Weismeier-Sammer and Reiner, 2011). Pioneering examples include EWS in Germany, Enercoop in France, Energy4All in the UK, or Ecopower in Belgium. As these citizen groups tend to adopt the cooperative model, or a related form depending on the local legislation and context, it seems important to understand what are the specific features, assets and limitations of this model in the field of RE. Indeed, while ‘traditional’ cooperatives operating for a long time in fields such as banking, agriculture, or retail, have received an important attention in the cooperative literature, much work still needs to be done to understand why and how cooperatives emerge either in fields in which they have not traditionally been widespread (such as health and care, services, etc.), or in ‘new’ fields or sub-fields (such as fair trade, microfinance or renewable energy). Research is even more needed insofar as ‘new’ cooperatives tend to differ from traditional ones in several ways, for instance through the involvement of multiple stakeholders (rather than a dominant one such as producers, consumers or workers) or through a stronger orientation towards general interest goals (beyond traditional mutual interest at the basis of most cooperatives). While RE cooperatives have strongly developed in countries such as Denmark (Lipp et al., 2012), Germany (Schreuer, 2012; Weismeier-Sammer and Reiner, 2011) and to a lesser extent the UK (Aitken, 2010; Kellett, 2007; Seyfang et al., 2012; van der Horst, 2008; Willis and Willis, 2012; Walker et al., 2007), their development has been much slower in other countries, particularly Southern Europe (Lipp et al., 2012). This seems to echo, to a certain extent, the general development of RE in these countries (Haas et al., 2011). Before mapping these differences against the background of RE development in these countries, it is necessary to understand how the assets and limits of the cooperative model apply to the particular case of RE. This is precisely the aim of this article. On the one hand, the assets of the cooperative model enable to understand why this form has been adopted by citizen groups and has developed in certain countries. On the other hand, the limits or weaknesses of the model enable to explain why cooperatives are still a minority in the field of RE and why their development is constrained by obstacles in certain countries. [less ▲]

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See detailPerceiving the ordinary : a study of everyday landscapes in Belgium
Vanderheyden, Vincent ULg; van der Horst; Van Rompaey, Anton et al

in Tijdschrift voor Economische en Sociale Geografie = Journal of Economic & Social Geography (2014)

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See detailMultifactorial Relationship Between 18F-Fluoro-Deoxy-Glucose Positron Emission Tomography Signaling and Biomechanical Properties in Unruptured Aortic Aneurysms
NCHIMI LONGANG, Alain ULg; CHERAMY-BIEN, Jean-Paul ULg; Gasser, T. Christian et al

in Circulation. Cardiovascular imaging (2014), 7

BACKGROUND: -The relationship between biomechanical properties and biological activities in aortic aneurysms was investigated with finite element simulations (FES) and 18F-fluoro-deoxyglucose (18F-FDG ... [more ▼]

BACKGROUND: -The relationship between biomechanical properties and biological activities in aortic aneurysms was investigated with finite element simulations (FES) and 18F-fluoro-deoxyglucose (18F-FDG) positron emission tomography (PET). METHODS AND RESULTS: -The study included 53 patients (45 males) with aortic aneurysms, 47 infrarenal (AAA) and 6 thoracic (TAA), who had at least one 18F-FDG PET/computed tomography. Over a 30-month period, more clinical events occurred in patients with increased 18F-FDG uptake on their last examination than in those without (5/18 (28%) vs. 2/35 (6%); P=0.03). Wall stress and stress/strength index computed by FES and 18F-FDG uptake were evaluating a total of 68 examinations. 25 (38%) examinations demonstrated at least one aneurysm wall area of increased 18F-FDG uptake. The mean number of these areas per examination was 1.6 (18/11) in TAAs vs. 0.25 (14/57) in AAAs, while the mean number of increased uptake areas co-localizing with highest wall stress and stress/strength index areas was 0.55 (6/11) and 0.02 (1/57), respectively. Quantitatively, 18F-FDG PET uptake correlated positively with both wall stress and stress/strength index (P<0.05). 18F-FDG uptake was particularly high in subjects with personal history of angina pectoris and familial aneurysm. CONCLUSIONS: -Increased 18F-FDG PET uptake in aortic aneurysms is strongly related to aneurysm location, wall stress as derived by FES and patient's risk factors such as acquired and inherited susceptibilities. [less ▲]

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