Last 7 days
Bookmark and Share    
See detailGestione alimentare dell'urolitiasi canina e felina
Diez, Marianne ULg

Scientific conference (2016, April 07)

Conférence sur la gestion alimentaire des urolithiases

Detailed reference viewed: 7 (0 ULg)
Full Text
See detailPlasma deposition method for catechol/quinone functionalised layers
Detrembleur, Christophe ULg; Van de Weerdt, Cécile ULg; Vreuls, Christelle et al

Patent (2016)

The invention provides a solvent-free plasma method for depositing an adherent catechol and/or quinone functionalised layer to an inorganic or organic substrate from a precursor which comprises at least a ... [more ▼]

The invention provides a solvent-free plasma method for depositing an adherent catechol and/or quinone functionalised layer to an inorganic or organic substrate from a precursor which comprises at least a quinone group; a protected or unprotected catechol group; a molecule substituted by a quinone group and/or a protected or unprotected catechol group; and/or a natural or synthetic derivative of a catechol group and/or a quinone group; wherein the quinone group is a 1,2- benzoquinone group and the catechol group is a 1,2-dihydroxybenzene group. [less ▲]

Detailed reference viewed: 29 (2 ULg)
Full Text
Peer Reviewed
See detailHot Melt Extrusion as a New Method to Form Inclusion Complexes with Cyclodextrins
Thiry, Justine ULg; Krier, Fabrice; Ratwatte, Shenelka et al

Conference (2016, April 06)

Detailed reference viewed: 29 (2 ULg)
Full Text
Peer Reviewed
See detailReconstruction and analysis of long-term satellite-derived sea surface temperature for the South China Sea
Huynh, Thi Hong Ngu ULg; Alvera Azcarate, Aïda ULg; Barth, Alexander ULg et al

in Journal of Oceanography (2016)

Sea surface temperature (SST) is one of the key variables often used to investigate ocean dynamics, ocean-atmosphere interaction, and climate change. Unfortunately, the SST data sources in the South China ... [more ▼]

Sea surface temperature (SST) is one of the key variables often used to investigate ocean dynamics, ocean-atmosphere interaction, and climate change. Unfortunately, the SST data sources in the South China Sea (SCS) are not abundant due to sparse measurements of in situ SST and a high percentage of missing data in the satellite-derived SST. Therefore, SST data sets with low resolution and/or a short-term period have often been used in previous researches. Here we used Data INterpolating Empirical Orthogonal Functions, a self-consistent and parameter-free method for filling in missing data, to reconstruct the daily nighttime 4-km AVHRR Pathfinder SST for the long-term period spanning from 1989 to 2009. In addition to the reconstructed field, we also estimated the local error map for each reconstructed image. Comparisons between the reconstructed and other data sets (satellite-derived microwave and in situ SSTs) show that the results are reliable for use in many different researches, such as validating numerical models, or identifying and tracking meso-scale oceanic features. Moreover, the Empirical Orthogonal Function (EOF) analysis of the reconstructed SST and the reconstructed SST anomalies clearly shows the subseasonal, seasonal, and interannual variability of SST under the influence of monsoon and El Niño-Southern Oscillation (ENSO), as well as reveals some oceanic features that could not be captured well in previous EOF analyses. The SCS SST often lags ENSO by about half a year. However, in this study, we see that the time lag changes with the frequencies of the SST variability, from 1 to 6 months. [less ▲]

Detailed reference viewed: 52 (8 ULg)
Full Text
See detailRecent progress in the development of a hydrogen maser in the TE111 mode
Van Der Beken, Emeline ULg; Léonard, Daniel; Counet, Arnaud et al

Poster (2016, April 06)

We present the recent progress in the development of a hydrogen maser in the unusual TE111 mode. In contrast to standard hydrogen maser that exploits the TE011 mode, the TE111 mode allows one to design ... [more ▼]

We present the recent progress in the development of a hydrogen maser in the unusual TE111 mode. In contrast to standard hydrogen maser that exploits the TE011 mode, the TE111 mode allows one to design hydrogen masers with significant reduced dimensions which represents a huge benefit for space applications and in particular for the global positioning system. We present in details the different parts of our model : cavity with a thin Teflon sheet, magnetic shielding, temperature control of the maser... [less ▲]

Detailed reference viewed: 50 (6 ULg)
Full Text
Peer Reviewed
See detailDevelopment of solid-supported methodology for the preparation of peptidoglycan fragments containing (2S,6R)-diaminopimelic acid
Simon, Justine ULg; Lamborelle, Nicolas ULg; Zervosen, Astrid et al

in Tetrahedron Letters (2016)

Herein, we describe the development of an efficient solid-supported methodology for the stereoselective synthesis of two peptides containing (2S,6R)-diaminopimelic acid, (S)-Ala-γ-(R)-Glu-(2S,6R)-A2pm-(R ... [more ▼]

Herein, we describe the development of an efficient solid-supported methodology for the stereoselective synthesis of two peptides containing (2S,6R)-diaminopimelic acid, (S)-Ala-γ-(R)-Glu-(2S,6R)-A2pm-(R)-Ala 1 and γ-(R)-Glu-(2S,6R)-A2pm 2. The platform consists of a Wang resin anchored by an amino acid chain including allylglycine. By olefin cross metathesis with vinylglycine, unsaturated protected (2S,6R)-A2pm was fixed on solid support. Peptides were achieved by cleavage of cross metathesis products from resin, followed by reduction of double bonds along removing of protecting groups. Furthermore, this efficient solid phase approach will lead to peptide and muropeptide libraries. [less ▲]

Detailed reference viewed: 34 (7 ULg)
Full Text
Peer Reviewed
See detailDetailed analysis of sputum and systemic inflammation in asthma phenotypes: are paucigranulocytic asthmatics really non-inflammatory?
Demarche, Sophie ULg; SCHLEICH, FLorence ULg; HENKET, Monique ULg et al

in BMC Pulmonary Medicine (2016), 16

BACKGROUND: The technique of induced sputum has allowed to subdivide asthma patients into inflammatory phenotypes according to their level of granulocyte airway infiltration. There are very few studies ... [more ▼]

BACKGROUND: The technique of induced sputum has allowed to subdivide asthma patients into inflammatory phenotypes according to their level of granulocyte airway infiltration. There are very few studies which looked at detailed sputum and blood cell counts in a large cohort of asthmatics divided into inflammatory phenotypes. The purpose of this study was to analyze sputum cell counts, blood leukocytes and systemic inflammatory markers in these phenotypes, and investigate how those groups compared with healthy subjects. METHODS: We conducted a retrospective cross-sectional study on 833 asthmatics recruited from the University Asthma Clinic of Liege and compared them with 194 healthy subjects. Asthmatics were classified into inflammatory phenotypes. RESULTS: The total non-squamous cell count per gram of sputum was greater in mixed granulocytic and neutrophilic phenotypes as compared to eosinophilic, paucigranulocytic asthma and healthy subjects (p < 0.005). Sputum eosinophils (in absolute values and percentages) were increased in all asthma phenotypes including paucigranulocytic asthma, compared to healthy subjects (p < 0.005). Eosinophilic asthma showed higher absolute sputum neutrophil and lymphocyte counts than healthy subjects (p < 0.005), while neutrophilic asthmatics had a particularly low number of sputum macrophages and epithelial cells. All asthma phenotypes showed an increased blood leukocyte count compared to healthy subjects (p < 0.005), with paucigranulocytic asthmatics having also increased absolute blood eosinophils compared to healthy subjects (p < 0.005). Neutrophilic asthma had raised CRP and fibrinogen while eosinophilic asthma only showed raised fibrinogen compared to healthy subjects (p < 0.005). CONCLUSIONS: This study demonstrates that a significant eosinophilic inflammation is present across all categories of asthma, and that paucigranulocytic asthma may be seen as a low grade inflammatory disease. [less ▲]

Detailed reference viewed: 17 (4 ULg)
Full Text
See detailNew conservative and regenerative treatments for cartilage and tendon lesions
Kaux, Jean-François ULg

Conference (2016, April 05)

Detailed reference viewed: 31 (4 ULg)
Full Text
See detailComment reconnaître les activités spontanées en EMG
WANG, François-Charles ULg

Conference (2016, April 05)

Detailed reference viewed: 27 (1 ULg)
Full Text
See detailNovel butanol pretreatment significantly improves delignification and saccharification of different lignocellulosic biomasses
Schmetz, Quentin ULg; Teramura, Hiroshi; Jacquet, Nicolas ULg et al

Conference (2016, April 05)

Organosolv pretreatment using diluted acid and butanol allows the separation of cellulose, hemicelluloses and lignin into three distinct phases. The butanol process has been investigated on six different ... [more ▼]

Organosolv pretreatment using diluted acid and butanol allows the separation of cellulose, hemicelluloses and lignin into three distinct phases. The butanol process has been investigated on six different biomasses: tall fescue, sugarbeet pulp, sugarcane bagasse, beech wood, eucalyptus and Japanese cedar. Dilute acid pretreatment has been performed under similar conditions for comparison. [less ▲]

Detailed reference viewed: 61 (5 ULg)
Full Text
See detailGeneralized Pascal triangle for binomial coefficients of finite words
Stipulanti, Manon ULg

Poster (2016, April 05)

Abstract. We introduce a generalization of Pascal triangle based on bino- mial coefficients of finite words. These coefficients count the number of times a word appears as a subsequence of another finite ... [more ▼]

Abstract. We introduce a generalization of Pascal triangle based on bino- mial coefficients of finite words. These coefficients count the number of times a word appears as a subsequence of another finite word. Similarly to the Sierpinski gasket that can be built as the limit set, for the Hausdorff distance, of a convergent sequence of normalized compact blocks extracted from Pascal triangle modulo 2, we describe and study the first properties of the subset of [0, 1] × [0, 1] associated with this extended Pascal triangle modulo a prime p. [less ▲]

Detailed reference viewed: 54 (25 ULg)
Peer Reviewed
See detailCultures alimentaires et appartenances. Une ethnographie dans l’espace de la frontière
Mescoli, Elsa ULg

Conference (2016, April 04)

« Dis-moi ce que tu manges, je te dirai qui tu es », écrivait déjà en 1826 Brillat-Savarin, en suggérant une approche herméneutique de l’alimentation. La nourriture, en raison de son incorporation, est ... [more ▼]

« Dis-moi ce que tu manges, je te dirai qui tu es », écrivait déjà en 1826 Brillat-Savarin, en suggérant une approche herméneutique de l’alimentation. La nourriture, en raison de son incorporation, est intimement connectée à la construction symbolique de la subjectivité ; elle a également une implication sociale (Sahlins, 1982), dans la mesure où elle fait l’objet d’un partage selon des règles de commensalité (Douglas, 1972). L’anthropologie de l’alimentation permet aujourd’hui d’éclaircir des processus sociaux plus amples que la consommation de nourriture engage (Mintz and Bois, 2002). Un intérêt particulier est porté sur le rapport entre l’alimentation et les représentations identitaires des groupes culturels ou sociaux. Les membres de ceux-ci se rapportent à des cultures alimentaires de façon active, s’engagent dans un processus d’affirmation d’une identité propre et partagée (Lupton, 1996). Ces dynamiques font aussi l’objet de plusieurs études sur la connexion entre alimentation et migration. Ces études mettent tout d’abord en évidence le fait que, lors d’un déplacement, les individus ou les groupes sont confrontés à des cultures alimentaires différentes, et elles s’engagent alors à vérifier dans quelle mesure cette rencontre défie l’identité individuelle (Spiro, 1955; Crenn, 2004; Cardona, 2004) et quelles pratiques elle engage afin de la préserver (Hage, 1997; Beyers, 2008; Diner et Diner, 2009). Souvent, les discours sur l’intégration des migrants concernent aussi les habitudes alimentaires (voir par exemple De Lesdain, 2002), considérées comme des indices d’une disposition à adhérer aux normes de la société « d’accueil ». Le niveau d’intégration (ou la disposition à s’intégrer) serait établie sur base de l’acculturation alimentaire dans le contexte migratoire (voir aussi Bastenier et Dassetto, 1993). Loin de constituer les extrêmes d’une dichotomie irrésoluble, les cultures alimentaires du pays d’origine et du pays d’accueil des migrants qui se rencontrent grâce – entre autre – à la mobilité de ces derniers, créent un espace de frontière qui est habité par les acteurs eux-mêmes (Agier, 2013). Dans cet espace l’appartenance culturelle est questionnée, elle fait l’objet d’une réflexivité (voir aussi Rodier, 2010), et les habitudes alimentaires prennent également la forme d’une « mise en scène du culturel, favorisant des stratégies ponctuelles d’affirmation identitaire et des rhétoriques du conflit » (Julien, 2010 : 17). Cette contribution veut amener une réflexion à propos des dynamiques qui ont lieu dans l’espace de la frontière ainsi définie, au départ de l’analyse de matériaux ethnographiques concernant les pratiques alimentaires de certaines femmes marocaines résidant en Italie et les discours qui les accompagnent. Dans l’espace de la frontière les appartenances socio-culturelles se définissent et sont négociées grâce également aux choix alimentaires. Le rapport individuel aux interdits alimentaires d’ordre religieux en est une preuve, notamment lorsque ce rapport assume la fonction de « [f]aire barrage à l’altérité […] c’est-à-dire instituer la séparation » (Benkheira 1997: 261) ou, inversement, d’affirmer l’échange social selon des modalités propres. [less ▲]

Detailed reference viewed: 26 (0 ULg)
Full Text
Peer Reviewed
See detailEnrichment of Central African logged forests with high-value tree species: testing a new approach to regenerating degraded forests
Doucet, Jean-Louis ULg; Daïnou, Kasso ULg; Ligot, Gauthier ULg et al

in International Journal of Biodiversity Science, Ecosystem Services and Management (2016)

In natural forests of Central Africa, several studies indicate a dramatic decrease in commercial trees, including species of concern for conservation. Enrichment planting with these species will favor ... [more ▼]

In natural forests of Central Africa, several studies indicate a dramatic decrease in commercial trees, including species of concern for conservation. Enrichment planting with these species will favor both the long-term recovery of their populations and biodiversity conservation in logged forests. In this study, we analyzed the survival and growth of 23 species in plantations. Fourteen 0.2–1.1 ha mixed species plantations consisting of single-species 15 × 15 m blocks were studied for 5 years in a logging concession of southeastern Cameroon. The plantation design considered both species light requirements and sensitivity to damage by pests. To identify the best species for enrichment planting, we assessed both species performance and plantation costs. We also tested for relationships between species traits and species performance. Mean annual diameter growth increments ranged from 1.67 to 42.9 mm. No significant relationship was found between growth and survival. Herbivory by wild Bovidae was the main cause of mortality and should be carefully considered in rehabilitation efforts. We found a significant negative relationship between wood density and maximum growth rate. The other traits tested were not good predictors of species performance in plantations. The two best-performing species, Triplochiton scleroxylon and Terminalia superba, could reach the minimum cutting diameter during a 30-year cutting cycle. Costs were high and mechanized site preparation is suggested to reduce them. Widespread adoption of such plantations will only occur if financial incentives or national regulations for assuring regeneration are implemented. [less ▲]

Detailed reference viewed: 35 (12 ULg)
Full Text
Peer Reviewed
See detailAs above, so below? Narrative Salience and Side Effects of National Innovation Systems
Claisse, Frédéric ULg; Delvenne, Pierre ULg

in Critical Policy Studies (2016)

This article furthers previous attempts at integrating narratology in policy analysis. Embracing an open-ended definition of narrative, it stresses the importance of maintaining distinct narrative levels ... [more ▼]

This article furthers previous attempts at integrating narratology in policy analysis. Embracing an open-ended definition of narrative, it stresses the importance of maintaining distinct narrative levels and, more generally, of taking into account the pragmatic dimension of narration as an activity, including the often-implicit role and focalization of the policy analyst. Developing a conceptual analogy between storytelling and the exercise of power, it argues for a critical use of practical imagination in ‘cold’ situations of ‘narrative salience’, characterized by the absence of controversy or uncertainty, an uneven distribution of the power of scenarization. These propositions for a ‘revisited’ approach to policy narratives, equidistant from the positivist and post-positivist dichotomy, are tested on the case of ‘narrative salience’ where a particular storyline, national innovation systems, is so dominant that there appears to be no ‘counter-story’. [less ▲]

Detailed reference viewed: 36 (9 ULg)
Full Text
See detailDevelopment and validation of analytical methods based on GC-MS/MC Triple Quadrupole instrument for the analysis of POPs in food and feed matrices
Calaprice, Chiara ULg

Doctoral thesis (2016)

This thesis focused on the development and validation of analytical methods for the de-tection and quantification of Persistent Organic Pollutants (POPs) in biological matrices, namely food and feed ... [more ▼]

This thesis focused on the development and validation of analytical methods for the de-tection and quantification of Persistent Organic Pollutants (POPs) in biological matrices, namely food and feed samples. POPs are a group of chemical compounds listed after the Stockholm Convention in 2001, with demonstrated toxicity and dangerousness for envi-ronment, animals and humans. In this work of thesis, special attention was reserved to some selected POPs: polychlo-rodibenzo-p-dioxins (PCDDs), polychlorodibenzofurans (PCDFs), usually referred to as “dioxins”, and polychlorinated biphenyls (PCBs), as there is a big concern about these contaminants in Taranto, a city in the Southern Italy very close to Bari, my home town. Taranto, indeed, is characterized by a large industrial area with a steel mill, several incin-erators and a refinery in few kilometre radius (Di Leo et al., 2014). This work has been done in collaboration with the University of Liège (Belgium) where a consolidated exper-tise in the field of POP measurements was available, especially in terms of dioxin anal-yses. In Chapter 1 the main steps, from sample preparation to data elaboration, of a validated confirmatory method for dioxin and PCB detection in food and feed using gas chromatog-raphy coupled to tandem mass spectrometry Triple Quad instrument (GC-MS/MS Triple Quad) have been described. This method was developed at the University of Liège in the framework of the last updates of the EU Regulation that in 2014 allowed confirmatory quantitative analysis of dioxins with Triple Quad. This method was the starting point of this work of thesis, because it was used for all dioxin and PCB quantifications. In Chapter 2 and chapter 3 alternative clean-up approaches for dioxin analysis in fatty food matrices have been developed using different automated systems. These works have been done in the framework of solvent and time saving for high throughput analytical methods in dioxin analysis. In chapter 2, an already existing automated system, DEXTechTM from LCTech GmbH (LCTech GmbH, Bahnweg 41, 84405 Dorfen, Germany) was used for sample clean-up, but a completely new clean-up approach was developed with this. GC-MS/MS Triple Quad instrument, as well as Magnetic Sector High Resolution Mass Spectrometry (HRMS) instrument were employed for final quantification, to demonstrate the suitability of our newly developed clean-up approaches whatever the instrumental detection. In Chapter 3 PowerPrepTM automated system from Fluid Management System (FMS Inc., 580 Pleasant Street, Watertown, MA 02472, USA) was used and our routine sample clean-up approach was modified in order to enhance the efficiency and to reduce cost and solvent consumption of the analysis. In Chapter 4 the main method for dioxin analysis was adapted for the integration of Dechloranes in the list of the analytes targeted in the regular control for dioxins in food and feed. Dechloranes are a family of 6 organo-chlorinated compounds with structure similar to Mirex, also called Dechlorane, a POP listed in the Stockholm convention. Dechloranes have been found in human blood of people from Europe (Brasseur et al., 2014) and in this work an analytical method for Dechlorane detection was developed and validated to investigate food as a possible route of exposure for humans in Europe, where no production plant has been identified so far. The analytical method was used to analyse 88 food and feed real sample and to give an idea of Dechlorane daily dietary intake. [less ▲]

Detailed reference viewed: 50 (6 ULg)
Peer Reviewed
See detailSNP development from RADseq data for the non-model species Robinia pseudoacacia L.
Verdu, Cindy; Guichoux, Erwan; Quevauvillers, Samuel et al

Poster (2016, April 04)

Detailed reference viewed: 28 (2 ULg)
Peer Reviewed
See detailEpisodic memory and aging: The effect of perceptual processing fluency on recognition memory processes
Bastin, Christine ULg; Willems, Sylvie ULg

Poster (2016, April 03)

Normal aging is characterized by decreased recollection, but better preserved familiarity. Memory tasks that facilitate the use of familiarity should allow attenuating age-related differences in memory ... [more ▼]

Normal aging is characterized by decreased recollection, but better preserved familiarity. Memory tasks that facilitate the use of familiarity should allow attenuating age-related differences in memory. The study tested two hypotheses: (1) can the reliance on familiarity during recognition memory be promoted by increasing the difference in perceptual processing fluency between old and new items; (2) can this manipulation reduce age-related difficulties in episodic memory? Twenty-four young and 24 older adults performed two verbal recognition memory tasks. In the No-Overlap task, target words and new words did not share any letter. Prior exposition to the target words thus induced increased processing fluency of the words and letters, so that fluency difference was a salient and reliable cue to discriminate between old and new words. In the Overlap task, target and new words had letters in common, so fluency cues were less useful. Recollection and familiarity was assessed with the Remember/Know/Guess paradigm. The results showed an age effect on recollection but intact familiarity. Moreover, (1) memory performance was better in the No Overlap than the Overlap task, with a greater hit rate and a smaller false alarm rate associated with familiarity. And, (2) age-related differences in recognition accuracy (hits – false alarms) were significantly attenuated in the No Overlap task compared to the Overlap task. These findings suggest that minimizing the perceptual similarity between targets and distractors, and thus increasing processing fluency differences, allowed to reduce the effect of age on recognition memory performance by facilitating the use of familiarity. [less ▲]

Detailed reference viewed: 48 (4 ULg)