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See detailStéphane Mallarmé (1842-1898)
Durand, Pascal ULg

in Sapiro, Gisèle (Ed.) Dictionnaire international Bourdieu (in press)

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See detailAbelian bordered factors and periodicity
Charlier, Emilie ULg; Harju, Tero; Puzynina, Svetlana et al

in European Journal of Combinatorics (in press)

A finite word u is said to be bordered if u has a proper prefix which is also a suffix of u, and unbordered otherwise. Ehrenfeucht and Silberger proved that an infinite word is purely periodic if and only ... [more ▼]

A finite word u is said to be bordered if u has a proper prefix which is also a suffix of u, and unbordered otherwise. Ehrenfeucht and Silberger proved that an infinite word is purely periodic if and only if it contains only finitely many unbordered factors. We are interested in abelian and weak abelian analogues of this result; namely, we investigate the following question(s): Let w be an infinite word such that all sufficiently long factors are (weakly) abelian bordered; is w (weakly) abelian periodic? In the process we answer a question of Avgustinovich et al. concerning the abelian critical factorization theorem. [less ▲]

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See detailUPLC®-MS/MS, an analytical tool for the accurate and rapid quantification of phytoestrogen metabolites in milk
Daems, Frédéric ULg; Jasselette, Christophe; Romnee, Jean-Michel et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (in press)

The term ‘phytoestrogen’ is used to define a wide variety of nonsteroidal compounds that occur naturally in many plants. When they are absorbed by cows, these polyphenolic compounds undergo ... [more ▼]

The term ‘phytoestrogen’ is used to define a wide variety of nonsteroidal compounds that occur naturally in many plants. When they are absorbed by cows, these polyphenolic compounds undergo biotransformation by specific bacteria present in the gastrointestinal tract. The resulting metabolites are absorbed in the organism and some are excreted in milk. The impact of these compounds on human health divides opinion. Some scientists believe that they might have adverse health effects. Others believe the opposite, especially with regard to their microbial metabolites, such as equol. Whatever one's view on the subject, scientists need accurate, sensitive and rapid analytical methods in order to continue the research on clarifying the phytoestrogen issue. Cow's milk is an animal product that is common in the human diet, and it is therefore important to evaluate its content of phytoestrogen metabolites. In order to study the human intake of equol via commercial milk, an analytical method was developed and validated following EMA/CVMP/VICH/463202/2009 guidelines. Enzymatic hydrolysis was used to release the equol. It was then extracted using double liquid/liquid extraction and analyzed using UPLC®-MS/MS, with an analysis runtime of only 5 min. This analytical method produced a linear calibration curve with a high correlation coefficient (R2≥0.996) between 5 and 1,000 ng mL−1. Good intra- and inter-day precision (RSDs≤5.3% and ≤5.2%, respectively) and accuracy (bias≤8.6%) were achieved. The recovery rate differed slightly among the different types of milk, ranging between 60.6±1.09% and 82.3±5.21%. Good method repeatability was observed (RSDs<15%). There was neither a matrix effect nor a carry-over effect, and the sample extracts were stable during storage for at least 7 days at −21°C and 5°C. In order to apply the proposed method and obtain an initial estimate of equol concentration in cow’s milk in Belgium, 44 samples of various brands found in several supermarkets and 5 raw milk samples from Walloon farms were analyzed. Equol was found in all the samples analyzed, with a concentration ranging from 10 to 50 ng mL−1 for conventional milk and from 70 to 130 ng mL−1 for organic milk. These results were compared with other European studies and the same trend was observed. The results obtained show the specificity, sensitivity and precision of this method for analyzing oestrogenic metabolite-equol in cow’s milk. This study should be extended to include a greater number of samples and be implemented over a longer period to see if there is a correlation between livestock practice and/or sample origins with the equol content in milk. The addition of other phytoestrogen compounds with this method, using UPLC®-MS/MS technology, could also lead to more reliable monitoring of these compounds in dairy production. [less ▲]

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See detailQue peut la rhétorique pour les études francophones ?, ou comment étudier les enjeux de catégorisation et d’institutionnalisation
Provenzano, François ULg

in Anders Baggesgaard, Mads; Verstraete-Hansen, Lisbeth (Eds.) Le monde en français – les littératures francophones dans un espace mondialisé (in press)

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See detailProjections photographiques et cinéma des premiers temps : La houillère de Gustave Marissiaux et les origines du cinéma minier
Mélon, Marc-Emmanuel ULg

in Intermédialités : Histoire et Théorie des Arts, des Lettres et des Techniques = Intermediality: History and Theory of the Arts, Literature and Technologies (in press)

Les spectacles de projection conçus par Gustave Marissiaux entre 1903 et 1926, en particulier le vaste documentaire intitulé "La houillère" (1905) est ici inscrit dans une histoire sociale des images ... [more ▼]

Les spectacles de projection conçus par Gustave Marissiaux entre 1903 et 1926, en particulier le vaste documentaire intitulé "La houillère" (1905) est ici inscrit dans une histoire sociale des images projetées et mis en rapport avec le cinéma minier des premiers temps [less ▲]

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See detailSomatotrope GHRH/GH/IGF-1 axis at the crossroad between immunosenescence and elder frailty
Bodart, Gwennaëlle ULg; Goffinet, Lindsay; Morrhaye, Gabriel et al

in Annals of the New York Academy of Sciences (in press)

Immunosenescence as complex modifications of immunity with age could be related to the so-called frailty syndrome of elderly leading to an inadequate response to minimal aggression. Functional decline ... [more ▼]

Immunosenescence as complex modifications of immunity with age could be related to the so-called frailty syndrome of elderly leading to an inadequate response to minimal aggression. Functional decline, the loss of ability to perform activities of daily living, is related to the decrease in physiological reserves and frailty and is a frequent outcome of hospitalization in older patients. Links between immunosenescence and frailty were explored and 20 immunological parameters were affected in seniors with functional decline. IGF-1, thymopoeisis and telomere length were part of these markers. A strong relationship between insulin-like growth factor-1 (IGF-1) and thymic ouput was evidenced. IGF-1, mediator of GH, was subsequently shown to induce IL-7 secretion in cultured primary human thymic epithelial cells (TECs). We are also exploring the ‘stress hypothesis’ according which an acute stress is the discriminator revealing a frailty susceptility. GH can counteract the deleterious immunosuppressive effect of stress-induced steroids. Under non-stressing conditions, the immunosenescent system preserves physiological responses, while in stressing conditions, the combination of immunosenescence and a defect in somatotrope axis might lead to functional decline. [less ▲]

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See detailAn analysis of potential resistance of the phytophagous mite, Tetranychus urticae (Tetranychidae) to four botanical pesticides
Attia, Sabrine; Lebdi, KL; Heuskin, Stéphanie ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (in press)

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See detailModulation of ciliary phosphoinositide content regulates trafficking and Sonic hedgehog signaling output
Chavez, M; Van Sande, J; de Kerchove d'Exaerde, A et al

in Developmental Cell (in press)

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See detailHousing Quality as Environmental Inequality: The Case of Wallonia, Belgium
Lejeune, Zoé ULg; Xhignesse, Guillaume ULg; Kryvobokov, Marko et al

in Journal of Housing and the Built Environment (in press)

First in the USA and then in many other countries, scholarship on environmental inequality has sought to shed light on the unequal environmental conditions borne by poor people and ethnic minorities, and ... [more ▼]

First in the USA and then in many other countries, scholarship on environmental inequality has sought to shed light on the unequal environmental conditions borne by poor people and ethnic minorities, and to challenge public policies and their unjust impacts on those target groups. Housing quality, especially the indoor characteristics of homes, offers an innovative perspective in this field of research. In previous research on environmental inequality in the Walloon context, housing quality has been proven to be a major determinant of quality of life and environmental well-being. This paper analyses housing quality through a twofold approach: through indoor characteristics on the one hand, and outdoor subjective and objective externalities on the other. It reveals the disparities between the most deprived and the wealthiest segments of the population. The evidence for this study is based on a housing quality survey carried out in 2012 and 2013 on 6,018 households in Wallonia (Belgium). The key findings are that poor people are found to live in housing of lower quality, in densely populated neighbourhoods and those with mixed use, with compensating amenities provided at the local level. Moreover, consistent with environmental inequality scholarship, deprived households are found to bear the burden of environmental degradation outside the home. People live in areas with poorer air quality, but are found to benefit from greater access to green spaces. The results of the survey reveal an interesting point concerning the environmental inequality literature; the interior features of housing are found to differ more widely between deprived and wealthier people than the surrounding environment does. [less ▲]

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See detailLe droit constitutionnel de la Principauté de Liège au 18e siècle
Behrendt, Christian ULg; Vandenbosch, Sofia ULg

in Revue Belge de Droit Constitutionnel [= RBDC] (in press), 2015

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See detailEnvironmental impacts of phosphoric acid production using di-hemihydrate process: a Belgian case study
Belboom, Sandra ULg; Szöcs, Carl; Léonard, Angélique ULg

in Journal of Cleaner Production (in press)

This paper undertakes an environmental evaluation of phosphoric acid production, using industrial data from Prayon SA in Belgium. Phosphoric acid is produced using the wet di-hemihydrate process also ... [more ▼]

This paper undertakes an environmental evaluation of phosphoric acid production, using industrial data from Prayon SA in Belgium. Phosphoric acid is produced using the wet di-hemihydrate process also called Central Prayon process. Both grades of phosphoric acid are evaluated: fertilizer and purified grades. Specificities of this plant are highlighted and improvements of the process in terms of energy and facilities integration through years are quantified as environmental benefits. The implementation on site of two sulphuric acid production facilities and their energetic integration allow a reduction of climate change impact of 80%. Results also show the importance of phosphogypsum valorisation which is sold for the main part in this case study. Concerning the purified grade, this specific process has been compared to the thermal process, using Best Available Techniques (BAT) values for the modelling. It shows a reduced environmental impact for the wet process in the majority of categories studies. [less ▲]

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See detailSinging ability is rooted in vocal-motor control of pitch
Hutchins, Sean; Larrouy, Pauline ULg; Peretz, Isabelle

in Attention, Perception & Psychophysics (in press)

The inability to vocally match a pitch can be caused by poor pitch perception or by poor vocal-motor control. Although previous studies have tried to examine the relationship between pitch perception and ... [more ▼]

The inability to vocally match a pitch can be caused by poor pitch perception or by poor vocal-motor control. Although previous studies have tried to examine the relationship between pitch perception and vocal production, they have failed to control for the timbre of the target to be matched. In the present study, we compare pitch matching accuracy with an unfamiliar instrument (the slider) and with the voice, designed such that the slider plays back recordings of the participant’s own voice. We also measured pitch accuracy in singing a familiar melody (“Happy Birthday”) to assess the relationship between single pitch matching tasks and melodic singing. Our results showed that participants (all nonmusicians) were significantly better at matching recordings of their own voices with the slider than with their voice, indicating that vocal-motor control is an important limiting factor on singing ability. We also found significant correlations between the ability to sing a melody in tune and vocal pitch matching, but not instrumental pitch matching. Better melodic singers also tended to have higher quality voices (as measured by acoustic variables). These results provide important evidence about the ultimate causes of poor singing ability, and demonstrate that single pitch matching tasks can be useful in measuring general singing abilities. [less ▲]

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See detailEmerging ecosystem services governance issues in the Belgium ecosystem services community of practice
Keune, Hans; Dendoncker, Nicolas; Popa, Florin et al

in Ecosystem Services (in press)

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See detailInternal encoding style and schizotypy: towards a conceptually-driven account of positive symptoms
Belayachi, Sanaa ULg; Laloyaux, Julien ULg; Laroi, Frank ULg et al

in Journal of Personality Disorders (in press)

Perception results from a combination of actual data and interpretative schemata based on pre-existing knowledge. Thus, ensuing subjective experience depends on the dynamic interplay between data-driven ... [more ▼]

Perception results from a combination of actual data and interpretative schemata based on pre-existing knowledge. Thus, ensuing subjective experience depends on the dynamic interplay between data-driven and conceptually-driven processing. A chronic imbalance between these two sources of stimulus encoding is likely to be maladaptive and could underlie cognitive and behavioral disturbances similar to that observed in schizotypy, especially if the balance is tipped too far towards conceptually-driven processing (i.e., Internal encoding style). This study aimed to examine the relationships between encoding style and various dimensions of schizotypy, by using a questionnaire that evaluates the extent to which pre-existing schemata (versus cues from the outside world) affect encoding processes. Consistent with previous findings, our results revealed that both Cognitive-Perceptual and Disorganization dimensions were related to an internal mode of encoding, suggesting that individuals with these features may be characterized by a disposition to biases at early stages of encoding. [less ▲]

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See detailEVALUATION OF FISH EXPOSURE TO POP-LIKE (ORGANOTIN) COMPOUNDS IN SEPETIBA BAY (RIO DE JANEIRO STATE, BRAZIL) THROUGH HEPATIC TOTAL TIN CONCENTRATIONS
Paiva, TC; Schilithz, PF; Bisi, TL et al

in Organohalogen Compounds (2016, August)

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See detailEspace, temps et angoisse psychotique : à propos d'un cas magistral
Englebert, Jérôme ULg

Scientific conference (2016, March 26)

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See detailSaint Genet et le dépassement de la situation : Création d’une clinique sartrienne
Englebert, Jérôme ULg

Scientific conference (2016, March 09)

Nous proposons de partir de Saint Genet : Comédien et Martyr (1952), monumentale psychobiographie de Sartre, pour évoquer une première lecture de la temporalité sartrienne et particulièrement des notions ... [more ▼]

Nous proposons de partir de Saint Genet : Comédien et Martyr (1952), monumentale psychobiographie de Sartre, pour évoquer une première lecture de la temporalité sartrienne et particulièrement des notions d’« instant » et de « conversion ». Le sujet clinique sur lequel s’appuiera notre propos et qui retiendra notre attention est l’incendiaire (dont on rappellera la différence avec le pyromane). Ensuite, nous convoquerons, et confondrons, L’esquisse d’une théorie des émotions (1933) et les Questions de Méthodes (1957). Ces deux points de repère nous permettront de reprendre le cas Genet et sa réaction à la lecture du volume que Sartre lui a consacré. D’importantes questions méthodologiques en psychologie clinique naîtront de ce développement et feront émerger une perspective « en double spirale » et la décisive question du corps. [less ▲]

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See detailHistoire, géographie et esthétique : peut-on récapituler la psychologie clinique ?
Englebert, Jérôme ULg

Scientific conference (2016, January 23)

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See detailAre there synthetic a priori propositions ? The paradigmatic case of mathematics, from Kant to Frege and Peirce
Leclercq, Bruno ULg

in Petrov, Vesselin (Ed.) Mathematics in Philosophy (2016)

Bernard Bolzano notoriously rejected Immanuel Kant’s claim that arithmetic and geometry were grounded on synthetic a priori judgements based on pure intuition. According to Bolzano, only analysis of ... [more ▼]

Bernard Bolzano notoriously rejected Immanuel Kant’s claim that arithmetic and geometry were grounded on synthetic a priori judgements based on pure intuition. According to Bolzano, only analysis of concepts could ground the generality of mathematical statements and proofs; such a stand would later lead to logicism (from Frege to Carnap). Far from going in this way, however, Charles Sanders Peirce, who was one of the fathers of formal logic but also a great admirer of Kant, provided semiotic reasons to believe that diagrams do have a general meaning and that they can provide a knowledge which is both general and “ampliative”. Unlike mere logical analysis, diagrams (the analogon of Kant’s schemas) help to explore concepts by going somehow “outside of them” in such a way that new knowledge is gained. This provides new support to Kant’s notion of intuitive construction, which is supposed to be both deductive and inventive [less ▲]

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