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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 ▲]

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See detailEarly Detection of University Students with Potential Difficulties
Hoffait, Anne-Sophie ULg; Schyns, Michael ULg

in Decision Support Systems (in press)

Using data mining methods, this paper presents a new means of identifying freshmen's profiles likely to face major difficulties to complete their first academic year. Academic failure is a relevant issue ... [more ▼]

Using data mining methods, this paper presents a new means of identifying freshmen's profiles likely to face major difficulties to complete their first academic year. Academic failure is a relevant issue at a time when post-secondary education is ever more critical to economic success. We aim at early detection of potential failure using student data available at registration, i.e. school records and environmental factors, with a view to timely and efficient remediation and/or study reorientation. We adapt three data mining methods, namely random forest, logistic regression and artificial neural network algorithms. We design algorithms to increase the accuracy of the prediction when some classes are of major interest. These algorithms are context independent and can be used in different fields. Real data pertaining to undergraduates at the University of Liège (Belgium), illustrates our methodology. [less ▲]

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See detailAssessment of Continuous Pain in Newborns admitted to NICUs in 18 European Countries
Anand, Kanwaljeet; Eriksson, Mats; Boyle, Elaine et al

in Acta Paediatrica (in press)

Aim: Continuous pain occurs routinely, even after invasive procedures, or inflammation and surgery, but clinical practices associated with assessments of continuous pain remain unknown. Methods: A ... [more ▼]

Aim: Continuous pain occurs routinely, even after invasive procedures, or inflammation and surgery, but clinical practices associated with assessments of continuous pain remain unknown. Methods: A prospective cohort study in 243 Neonatal Intensive Care Units (NICUs) from 18 European countries recorded frequency of pain assessments, use of mechanical ventilation, sedation, analgesia, or neuromuscular blockade for each neonate upto 28 days after NICU admission. Results: Only 2113/6648 (31·8%) of neonates received assessments of continuous pain, occurring variably among tracheal ventilation (TrV, 46·0%), noninvasive ventilation (NiV, 35· 0%), and no ventilation (NoV, 20· 1%) groups (p<0· 001). Daily assessments for continuous pain occurred in only 10·4% of all neonates (TrV: 14· 0%, NiV: 10· 7%, NoV: 7· 6%; p<0· 001). More frequent assessments of continuous pain occurred in NICUs with pain guidelines, nursing champions, and surgical admissions prompted (all p<0·01), and for newborns <32 weeks gestational age, those requiring ventilation, or opioids, sedatives-hypnotics, general anesthetics (O-SH-GA) (all p<0·001), or surgery (p=0· 028). Use of O-SH-GA drugs increased the odds for pain assessment in the TrV (OR:1· 60, p<0·001) and NiV groups (OR:1·40, p<0· 001). Conclusion: Assessments of continuous pain occurred in less than one-third of NICU admissions, and daily in only 10% of neonates. NICU clinical practices should consider including routine assessments of continuous pain in newborns. [less ▲]

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See detailShopping, Cooking, Belonging. Diversifying dietary practices in Moroccan families in a context of migration in Milan
Mescoli, Elsa ULg

in Diasio, Nicoletta; Julien, Marie-Pierre (Eds.) De la contrainte à l’innovation dans les pratiques alimentaires (in press)

Les études contemporaines autour des cultures alimentaires, menées au départ de différentes perspectives disciplinaires, mettent en évidence le dynamisme interne et interrelationnel qui caractérise les ... [more ▼]

Les études contemporaines autour des cultures alimentaires, menées au départ de différentes perspectives disciplinaires, mettent en évidence le dynamisme interne et interrelationnel qui caractérise les gastronomies, plutôt qu’une « pureté » et un « immobilisme » originels (La Cecla, 1998). Cependant, lorsque l’analyse est portée sur le rapport entre alimentation et migration, une essentialisation des pratiques est souvent produite, plaçant ces dernières dans l’un ou l’autre de deux pôles opposés : le modèle alimentaire associé au pays d’origine et celui majoritairement diffusé dans le pays d’accueil. Une évaluation de ces habitudes ainsi que d’une éventuelle résistance au changement, permettrait d’établir la disposition des migrants à « s’intégrer » à la société locale (Bastenier et Dassetto, 1993 ; De Lesdain, 2002 ; Scardella et al., 2003). Dans ce contexte discursif, où l’inclusion des individus dans certains groupes (la communauté majoritaire, la collectivité « saine » etc.) se fait par l’adhésion aux normes locales, les familles issues de la migration performent leur quotidien alimentaire. Bricoler avec ces normes surdéterminées leur permet d’exprimer une créativité qui se met en œuvre à plusieurs niveaux : celui de l’approvisionnement, celui de la préparation des repas, celui de la transmission des savoir-faire entre les générations. Ces dynamiques seront explorées au travers de l’analyse des données collectées lors d’un travail de terrain mené pendant dix-huit mois au milieu d’un groupe de femmes marocaines résidant dans la province de Milan en Italie. Observations et entretiens ont été conduits à la fois dans les maisons et dans les espaces publics. Ils portaient sur les (micro-)pratiques alimentaires entendues comme facteurs centraux dans la définition du Soi, suivant une approche praxéologique à la subjectivation (Warnier, 2001). Grâce à cette analyse, il sera possible de constater qu’un modèle alimentaire composite se redéfinit au niveau familial, bien qu’il ne soit pas exempté de l’effet de dynamiques culturelles, sociales, économiques et politiques plus amples et apparemment structurantes. On assiste en fait à une diversification et innovation des pratiques. D’un côté, avec leurs déplacements pour faire leurs achats, femmes et hommes dessinent des chorégraphies complexes à l’intérieur de la ville, et ils engagent aussi une circulation transnationale de biens alimentaires. D’un autre côté, mères et filles puisent de savoirs et savoir-faire différents et s’appuient sur une pluralité d’outils (mémoire incorporée, bouche à oreille, livres de recettes, internet) pour faire face à leurs exigences alimentaires. Ainsi, les familles continuent d’effectuer un choix actif en matière d’alimentation. [less ▲]

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See detailL'extrême droite en Europe
Jamin, Jérôme ULg

Book published by Bruylant (in press)

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See detail1929 et le populisme aux Etats-Unis. Les cas du père Coughlin et de Huey Long
Jamin, Jérôme ULg

in Provenzano, François; Goin, Emilie (Eds.) Usages du peuple (in press)

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See detailPrediction-focused approaches: an opportunity for hydrology
Hermans, Thomas ULg

in Groundwater (in press)

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

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

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See detailChemotherapy induces alternative transcription and splicing: Facts and hopes for cancer treatment
Lambert, Charles ULg; Garbacki, Nancy ULg; Colige, Alain ULg

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

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See detailVocal change patterns during a teaching day: Inter- and intra-subject variability
Remacle, Angélique ULg; Garnier, Maëva; Gerber, Silvain et al

in Journal of Voice (in press)

Objectives: To describe the mean voice changes of 22 female teachers during a typical workday, examine the inter- and intra-subject variability, and establish a typology of different voice patterns during ... [more ▼]

Objectives: To describe the mean voice changes of 22 female teachers during a typical workday, examine the inter- and intra-subject variability, and establish a typology of different voice patterns during the workday. Methods: For each participant, fundamental frequency (F0), harmonics-to-noise ratio (HNR), jitter, and shimmer were measured on sustained vowels at the beginning and at the end of the workday, at three different times during the school year. Results: The group mean pattern showed significant increases in F0 and HNR during the workday and significant decreases in jitter and shimmer. However, considerable inter- and intra-subject variability was observed. Based on the variation in the acoustic parameters during the workday, three different voice patterns were identified. The first is characterized by a greater F0 increase during the day, interpreted as a common, appropriate adaptation to vocal load. The second is characterized by a greater increase in HNR during the day and greater decreases in jitter and shimmer, interpreted as hyperfunctional voice production. The third is characterized by greater decreases in F0 and HNR and greater increases in jitter and shimmer, suggesting acute inflammation or muscle fatigue following the workday. Conclusions: The observed variety of vocal patterns during the workday emphasizes the need to study this phenomenon individually and target different types of behaviors in order to develop tailored prevention and treatment methods. [less ▲]

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See detailA new approach for time-lapse data weighting in ERT
Lesparre, Nolwenn ULg; Nguyen, Frédéric ULg; Kemna, Andreas et al

in Geophysics (in press)

Applications of timelapse inversion of electrical resistivity tomography (ERT) allows monitoring variations in the subsurface that play a key role in a variety of contexts. The inversion of timelapse data ... [more ▼]

Applications of timelapse inversion of electrical resistivity tomography (ERT) allows monitoring variations in the subsurface that play a key role in a variety of contexts. The inversion of timelapse data provides successive images of the subsurface properties showing the medium evolution. Images quality is highly dependent on the data weighting determined from the data error estimates. However, the quantification of errors in the inversion of timelapse data has not yet been addressed. We propose a methodology for the quantification of timelapse data error based on the analysis of the discrepancy between normal and reciprocal readings acquired at different times. We apply the method to field monitoring data sets collected during the injection of heated water in a shallow aquifer. We tested different error models to show that the use of an appropriate time-lapse data error estimate yields significant improvements in terms of imaging. An adapted inversion weighting for time-lapse data implies that the procedure does not allow an over-fitting of the data, so the presence of artifacts in the resulting images is greatly reduced. Our results demonstrate that a proper estimate of time-lapse data error is mandatory for weighting optimally the inversion in order to obtain images that best reflect the medium properties evolution through time. [less ▲]

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See detailCultural Marxism : A Survey
Jamin, Jérôme ULg

in Religion Compass (in press)

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See detailEpistémologie de la théorie du complot
Jamin, Jérôme ULg

in Cahiers de l'Éducation Permanente (Les) (in press)

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See detailThe Lamps in Central Italy : Typological Comparisons between the Block D Domus at Musarna (VT) and the Schola del Traiano at Ostia Antica (RM)
Motta, Lucie ULg

in Vth International Lychnological Association (ILA) General Congress « Lumen ! » Past, Present and Future (Sibiu, 8-12 septembre 2015) (in press)

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See detailIntroduction. I. The religious agents: the "Isiaci"
Veymiers, Richard ULg; Gasparini, Valentino

in Veymiers, Richard; Gasparini, Valentino (Eds.) The Greco-Roman Cults of Isis: Agents, Images and Practices. Proceedings of the VIth Conference of Isis Studies (Erfurt, May 6-8 – Liège, September 23-24, 2013) (in press)

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See detailTransatlantic Encounters. A Review of Nicolas Labarre’s Heavy Metal, l’autre Métal Hurlant
Crucifix, Benoît ULg

in International Journal of Comic Art [=IJOCA] (in press), 19(1),

Review of Nicolas Labarre, Heavy Metal, l'autre Métal Hurlant, Bordeaux: Presses universitaires de Bordeaux, 2017.

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See detailHyper-réflexivité et perspective en première personne : un apport décisif de la psychopathologie phénoménologique contemporaine à la compréhension de la schizophrénie
Englebert, Jérôme ULg; Stanghellini, Giovanni; Valentiny, Caroline et al

in Evolution Psychiatrique (in press)

Objectives: This paper aims to summarize the hypothesis, which originates in the field of phenomenological psychopathology, of schizophrenic hyperreflexivity, and to discuss the methodological context ... [more ▼]

Objectives: This paper aims to summarize the hypothesis, which originates in the field of phenomenological psychopathology, of schizophrenic hyperreflexivity, and to discuss the methodological context enabling these highly subjective manifestations to emerge. Starting from the seminal hypothesis developed by contemporary psychopathology, that the schizophrenic patients appear to experience a consciousness that finds itself being forced to question phenomena which should be intuitively self-evident, the idea of this present paper is to complete the usual interpretation of schizophrenia as deficit by the hypothesis of an excess functioning of consciousness. Methods: First-person perspective is a qualitative approach completing third-person interpretation, traditional in the field of psychiatry – which consists in the attribution, from an external position, of clinical signs noted independently of the perception expressed by the patient. This first-person perspective focuses on the subjective experience expressed by the individual. To understand schizophrenia according to this perspective, the words of several schizophrenic patients have been collected as part of a clinical device. We used the EASE scale (Examination of Anomalous Self-Experience) with this aim in mind. This scale offers a phenomenologically oriented semi-structured exploration of a set of difficulties revealing anomalies of subjective experience, considered as troubles of self-awareness. EASE has been developed on the basis of self-descriptions by patients suffering from schizophrenic spectrum troubles. This tool allows the co-construction of a language between patient and clinician, focused on the patient’s particular experience and the unique phenomena he endures. Results: Besides the hyperreflexivity phenomena, the qualitative analysis of collected descriptions highlight two important features of schizophrenic being-in-the-world. First a problem of common sense, which addresses the issue of intersubjectivity and the opportunity, for schizophrenic patients, to share a social world. Then the existence of an intercorporeality trouble, since the schizophrenic hyperreflexivity experiences are accompanied by a loss of “common body”, body being the scene where intersubjectivity is performed. Employing EASE, and the ensuing first-person perspective, is relevant in a psychotherapeutic approach; on one hand in the process of acknowledgement of the disease (which has to be made by the patient as well as by the clinician), on the other hand in the communication with families of schizophrenic patients. Conclusions: The phenomenological interpretation offered by the application of a first-person perspective in the understanding of schizophrenic patients experience, as well as the interest showed in the hyperreflexivity phenomenon, suggest an outlook of schizophrenia which isn’t reduced to a deficit interpretation anymore (without denying the latter), and which uncovers not a weakening, but a surprising intensification of consciousness. [less ▲]

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See detailSomes Exemples of a Singular Lamp
Motta, Lucie ULg

in Vth International Lychnological Association (ILA) General Congress « Lumen ! » Past, Present and Future (Sibiu, 8-12 septembre 2015) (in press)

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See detailNotice de présentation du Service d’Histoire de l’art et Archéologie de l’Antiquité gréco-romaine de l’Université de Liège
Morard, Thomas ULg

in Duchesne, Jean-Patrick (Ed.) Bicentenaire de l’ULg (in press)

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See detailLes Lumières de la ville : cinéma des premiers temps et espace urbain
Servais, Christine ULg

in Durand, Pascal; Servais, Christine (Eds.) L'intervention du support. Médiation esthétique et énonciation éditoriale (in press)

Cet article propose une analyse du cinéma des premiers temps comme dispositif de médiation. A partir de l'analyse du corpus des films Lumière portant explicitement sur la ville, et en distinguant les vues ... [more ▼]

Cet article propose une analyse du cinéma des premiers temps comme dispositif de médiation. A partir de l'analyse du corpus des films Lumière portant explicitement sur la ville, et en distinguant les vues "de" la ville des vues "sur" la ville, l'auteur conduit une analyse de la manière dont le cinéma des premiers temps a représenté la ville et de la relation à l'espace public que, ce faisant, il proposait à ses spectateurs. [less ▲]

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