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See detailLes pathologies de l’adaptation et l'adaptation des pathologies
Englebert, Jérôme ULg

Scientific conference (2017, January 21)

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See detailPhotocleavable stabilizer for the preparation of PHEMA nanogels by dispersion polymerization in supercritical carbon dioxide
Alaimo, David; Grignard, Bruno ULg; Kuppan, Chandrasekar et al

in Polymer Chemistry (2017), 8(3), 581-591

A new photo-sensitive diblock copolymer composed of a hydrophilic sequence of poly(ethylene oxide) (PEO) linked to a CO2-philic sequence of poly(1H,1H,2H,2H-heptadecafluorodecyl acrylate) (PFDA) by a ... [more ▼]

A new photo-sensitive diblock copolymer composed of a hydrophilic sequence of poly(ethylene oxide) (PEO) linked to a CO2-philic sequence of poly(1H,1H,2H,2H-heptadecafluorodecyl acrylate) (PFDA) by a light sensitive o- nitrobenzyl group was successfully synthesized by RAFT polymerization and used as stabilizer for the free radical polymerization of 2-hydroxyethyl methacrylate (HEMA) in dispersion in ?,?,?-trifluorotoluene and supercritical carbon dioxide (scCO2). Thanks to this fluorinated stabilizer, well-defined particles of PHEMA down to 350 nm of diameter were produced in scCO2. Advantageously, the photocleavable group at the block junction of the stabilizer could be cleaved by exposing the particles to UV light so that the fluorinated block could be extracted in TFT or scCO2. As supported by X-ray photoelectron spectroscopy (XPS) analysis, up to 80 % of the fluorinated block of the stabilizer can be removed, leading to efficient swelling and dispersion of the resulting PHEMA nanogels in water. [less ▲]

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See detailCharacterization of High Altitude Clouds at the Martian Limb and Terminator Using MAVEN IUVS Observations
Deighan; Stiepen, Arnaud ULg; IUVS team

Conference (2017, January 20)

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See detailMars Ozone mapping with MAVEN IUVS
Lefèvre; Stiepen, Arnaud ULg; IUVS team

Conference (2017, January 20)

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See detailComparison of Various Indices of Energy Metabolism in Recumbent and Healthy Dairy Cows
Guyot, Hugues ULg; Detilleux, Johann ULg; Lebreton, Pascal et al

in PLoS ONE (2017), 12(1), 1-11

BACKGROUND: Downer cow syndrome (DCS) is often diagnosed in dairy cattle during the early post-partum period. The etiology of this condition is not completely understood, as it can be related to the ... [more ▼]

BACKGROUND: Downer cow syndrome (DCS) is often diagnosed in dairy cattle during the early post-partum period. The etiology of this condition is not completely understood, as it can be related to the energetic or electrolyte metabolism, as well as to infectious diseases or to trauma. HYPOTHESIS/OBJECTIVES: The aim of this study is to compare energy metabolism and insulin sensitivity indices and various biochemical parameters between recumbent and healthy dairy cows. ANIMALS: A prospective study has been undertaken on 361 recumbent and 80 healthy Holstein cows. METHODS: Plasmatic glucose, insulin, non-esterified fatty acid (NEFA) and β-hydroxybutyrate (BHB) were assayed in all cows in order to calculate the insulin sensitivity indices but also minerals (Calcium, Phosphorous and Magnesium), thyroxin and creatine kinase. Body Condition Scores (BCS) was assessed. RESULTS: Significant differences in NEFA, and the glucose and insulin sensitivity indices ("Homeostasis Model Assessment" HOMA, "Revised Quantitative Insulin Sensitivity Check Index" RQUICKI, RQUICKI-BHB) were observed between healthy and recumbent cows in the early post-parturient period indicating disturbances of glucose and insulin homeostasis in the recumbent cows. In the same manner, mineral concentrations were significantly different between healthy and recumbent cows. Glucose, insulin NEFA, and HOMA, were different between early post-partum downer cows and the DCS-affected cows later in lactation. CONCLUSION AND CLINICAL IMPORTANCE: Results indicate disturbances in energy homeostasis in DCS-affected dairy cows. Further research should determine a prognostic value of the indices in cows suffering from recumbency of metabolic origin [less ▲]

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See detailStatistical description of hydrogeological parameters for the main aquifer contexts in Wallonia
Briers, Pierre ULg; Dollé, Fabien ULg; Orban, Philippe ULg et al

Conference (2017, January 20)

The Walloon Region Soil decree proposes a series of guidance documents associated to the procedures for site remediation operations. Among others, one of these documents describes methodologies and tools ... [more ▼]

The Walloon Region Soil decree proposes a series of guidance documents associated to the procedures for site remediation operations. Among others, one of these documents describes methodologies and tools for risk assessment of pollutant leaching from soil to groundwater and for pollutant dispersion through groundwater. These tools require using estimates of hydrogeolocial parameters such as hydraulic conductivity, effective (transport) porosity etc. In this context, an inventory of hydrogeological studies (regional characterization studies, groundwater protection zones…) was performed to identify and collect available field-based measurements for a statistical description and analysis of such data. Complementary to that, a simple geodatabase has been developed to manage and process these data. As expected, these results show contrasted parameter distributions per geological contexts and regions. The objective of the presentation is to describe the methodology followed for the statistical treatment of hydrogeological data and to present the results and associated database. It is believed that such results can be very useful for different hydrogeological studies, in particular as a first referential for groundwater modelling applications and any other studies where statistical descriptions of hydrogeological data are relevant. [less ▲]

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See detailConclusion
Marganne, Marie-Hélène ULg

in Nocchi Macedo, Gabriel; Scappaticcio, Marie Chiara (Eds.) Signes dans les textes, textes sur les signes. Érudition, lecture et écriture dans le monde gréco-romain. Actes du colloque international (Liège, 6-7 septembre 2013) (2017, January 20)

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See detailTextes sur les signes: les sources latines
Nocchi Macedo, Gabriel ULg

in Nocchi Macedo, Gabriel; Scappaticcio, Maria Chiara (Eds.) Signes dans les textes, textes sur les signes. Actes du colloque international. Liège, 6-7 septembre 2013. (2017)

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See detailUse of complementary biophysical approaches to study the interactions of fatty acid hydroperoxides with biomimetic plant plasma membranes
Deboever, Estelle ULg; Nasir, Mehmet Nail ULg; Deleu, Magali ULg et al

Poster (2017, January 20)

In the actual context, biopesticides have emerged as a main alternative to conventional agriculture1. Hence, elicitors are metabolites naturally produced by microorganisms, pathogenic or not, and plants ... [more ▼]

In the actual context, biopesticides have emerged as a main alternative to conventional agriculture1. Hence, elicitors are metabolites naturally produced by microorganisms, pathogenic or not, and plants which are able to induce the natural resistance of plants. Also, they have proved to be excellent candidates for biological control. In this context, the lipoxygenase pathway leads to the formation of fatty acid degradation products, called oxylipins, which appear to be crucial agents in plant defence mechanisms2,3. Moreover, with their broad spectrum of action and their possible inducibility, oxylipins appear to be promising candidates for their use as elicitors4. This work focuses on two hydroperoxy-derived oxylipins, the 13(S)-hydroperoxy-octadecadienoic acid (13-HPOD) and the 13(S)-hydroperoxy-octadecatrienoic acid (13-HPOT). The study of the interaction of such compounds with representative plant plasma membrane lipids is essential to understand plant resistance mechanisms. Several in silico and experimental techniques of biophysics showed that acyl-hydroperoxides have significant adsorption capacity and a strong affinity for model membranes. They may also penetrate biological membrane but no permeabilisation effect was observed in this work. Slight conformational differences seem to have a significant impact on their ability to interact with plant plasma membranes. Based on these results, further investigation of the interactions of fatty acids hydroperoxides, even more on the 9-forms, with plant plasma membranes and eventually in the presence of phytopathogenic species, would allow a better understanding of the innate immunity and, on the longer term, could lead to the development of new elicitors with biological mechanisms potentially independent of membrane protein receptors. [less ▲]

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See detailÉtude du cytosquelette de microtubules et implication de la vimentine dans le développement postnatal de la cochlée chez les rongeurs
Renauld, Justine ULg

Doctoral thesis (2017)

According to the World Health Organization, nearly 5% of the population suffers from hearing impairments. These can lead to social isolation, depression, or a reduction in professional abilities. There ... [more ▼]

According to the World Health Organization, nearly 5% of the population suffers from hearing impairments. These can lead to social isolation, depression, or a reduction in professional abilities. There are two types of hearing impairments : conductive hearing impairment and sensorineural hearing impairment. The first results from a defect in sound conduction at the level of the outer or middle ear, the latter results from defects in the cochlea or auditory nerve. In recent years, most studies on the organ of hearing have focused on sensory cells, which are actual receptors of auditory information, whereas supporting cells have been little explored. However, the latter, surrounding the sensory cells, contain a highly developed cytoskeleton, essential to the architecture of the mature organ of Corti. During this thesis work, we first observed the setting up of microtubules within the supporting cells of the organ of Corti. Our morphological data revealed important changes in microtubular cytoskeleton of these cells during the first week of life. We identified an arrangement of microtubules into two distinct bundles. We then demonstrated a modification in the morphology of these microtubules, revealing an increase in the diameter and the number of protofilaments of these cells. We finally demonstrated that tubulin βV has a more specific spatiotemporal distribution than the other tubulins. This characteristic suggests that tubulin βV plays an important role in the maturation of the Corti organ. In the second part of this thesis, we analyzed the involvement of vimentin in cochlear development, and more particularly in the opening of the intercellular spaces and in the myelination of the spiral ganglion, which is the first relay of the auditory pathway. In order to study the role of vimentin in the development of the inner ear, we examined the cochlear morphology and auditory capacities of vimentin deficient mice. Our results indicated that the absence of vimentin does not seem to affect the architecture of the organ of Corti. We then showed a slight morphological difference in the nerve fibers between wildtype and vimentin-knockout mice. We finally checked the hearing physiology of these mice and concluded that vimentin does not play a major role in hearing. [less ▲]

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See detailUber-like Models for the Electrical Industry
Ernst, Damien ULg

Speech/Talk (2017)

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See detailLes codices miniatures grecs et latin d'Égypte : contenu, forme et fonction
Carlig, Nathan ULg

Scientific conference (2017, January 19)

Étude globale des codices miniatures grecs et latin provenant d’Égypte. L’examen de leur contenu, de leur forme et de leur mise en page, ainsi que de leur provenance, lorsqu’elle est connue, permettront ... [more ▼]

Étude globale des codices miniatures grecs et latin provenant d’Égypte. L’examen de leur contenu, de leur forme et de leur mise en page, ainsi que de leur provenance, lorsqu’elle est connue, permettront d’identifier des contextes de production et d’utilisation de ces livres de petit format. [less ▲]

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See detailGlobal Simulation of UV atmospheric Emissions
Gonzalez-Galindo; Lopez-Valverde; Forget et al

Poster (2017, January 19)

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See detailAvantages/inconvénients liés au maintien à domicile ou au placement en institution de la personne âgée
Adam, Stéphane ULg

Conference given outside the academic context (2017)

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See detailVers une société post-croissance : intégrer les défis écologiques, économiques et sociaux
Cassiers, Isabelle; Maréchal, Kevin ULg; Méda, Dominique

Book published by Editions de l'Aube (2017)

Le terme post-croissance désigne l’entrée dans une ère que nous ne parvenons pas encore à nommer, si ce n’est par référence à celle que nous quittons. Les symptômes qui signent la fin d’une époque sont ... [more ▼]

Le terme post-croissance désigne l’entrée dans une ère que nous ne parvenons pas encore à nommer, si ce n’est par référence à celle que nous quittons. Les symptômes qui signent la fin d’une époque sont clairs et sans appel : la poursuite de la croissance économique ne constitue plus un projet de société crédible. Toutefois, y renoncer pose aux économistes (théoriciens et praticiens) des défis majeurs qui exigent de reprendre à leur racine, sous un éclairage transdisciplinaire, les questions dont ils traitent couramment. Ensemble, les neuf chercheurs réunis dans cet ouvrage s’interrogent : quels sont les problèmes majeurs qui surgissent à l’esprit dès lors que l’on abandonne un objectif de croissance continue ? Par où passe la transition vers un autre horizon ? Quels sont les courants de pensée et les modes de gouvernance susceptibles d’articuler un projet cohérent ? Chacun des auteurs apporte un regard spécifique, une pièce au puzzle qu’il s’agirait à l'avenir d’assembler. [less ▲]

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See detailSous-arbres induits pleinement feuillus
Vandomme, Elise ULg

Scientific conference (2017, January 19)

In the last 60 years, polyominoes have been the object of many investigations. A central problem, that is still open, is to determine the number of polyominoes with n square cells. An approach to solve ... [more ▼]

In the last 60 years, polyominoes have been the object of many investigations. A central problem, that is still open, is to determine the number of polyominoes with n square cells. An approach to solve the problem is to use a combinatorial description of polyominoes and to try to describe particular families of polyominoes. Behind each polyomino there is a graph whose vertices are the cells, such that two vertices are adjacent if their cells share a common edge. In this framework, one can study the polyominoes with an acyclic graph, called tree-like polyominoes. In 2016, Blondin-Massé et al. determined the maximal number that can have a tree-like polyomino with n cells. In this talk, we generalize this problem to graphs in general and we show this problem is NP-complete. However, the problem becomes polynomial when we restrict ourselves to trees or to graphs with a constant tree-width. [less ▲]

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See detailGenetics of Pituitary Tumor Syndromes
Daly, Adrian ULg; BECKERS, Albert ULg

in Melmed, Shlomo (Ed.) The Pituitary (2017)

Detailed reference viewed: 27 (5 ULg)
See detailMoresnet-Neutre (1816-1919): Histoire et mémoire d'une curiosité géopolitique
Brüll, Christoph ULg

Conference given outside the academic context (2017)

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See detailIntegrated approach for ethics in research for young researchers at the University of Liege
Halleux, Isabelle ULg

E-print/Working paper (2017)

For ensuring good practices in research from the beginning and developing a culture of ethics, ULg developed an integrated approach focusing on young researchers. The objective is to instill, as soon as ... [more ▼]

For ensuring good practices in research from the beginning and developing a culture of ethics, ULg developed an integrated approach focusing on young researchers. The objective is to instill, as soon as possible, a good perception of what is quality in research, considering methodology, project management and ethics as norms and moral positioning for solving dilemma. Actions, coordinated by the Council for Ethics and Scientific Integrity (CEIS), are developed simultaneously through 5 axes. Young researchers are involved at all levels of the process, directly or as representative of the PhD Association. 1. Training: Sensitization and education to ethics; development of professional capacities, incl. data analysis & open data; seminaries with supervisors and PhDs ("duos") 2. Forum: ethics on the public space – Seminaries, conference, round tables, intervision, discussion and exchange on questions, dilemma, case-studies, with the help of external experts 3. Research appraisal: requirement for an ethics appraisal of each research project, with a special focus on human and social sciences, with the help of disciplinary ethics committees 4. Ethics analysis: Analysis of special questions, complains, problems, and decision making in case of violation of integrity 5. Regulation: Writing of procedures, dissemination of documents, recommendations and case-studies, link to the HR Strategy for researchers and the Charter and Code. In 2016, successful activities took place : - about 500 PhDs (25%) participated directly in the "Go2thesis training" (incl. 1 day on project management and ethics), dedicated trainings (introduction, special questions) and forum-debates - all the research projects, incl. PhD grants, supported by ULg were requested to provide an ethical issue check list, based on the H2020 standards. The R&D Office helped to explain about the issues and resources, and to orient the applicant to the ad hoc ethics committee - special requests were analyzed by the CEIS for several PhD's sensitive projects - Information was provided to PhDs regarding authorship, crowdfunding, privacy, open data and security while travelling New projects will be developed for (1) strengthening the relation between CEIS-ethics committee-doctoral school-supervisor-PhD (2) involving all the new PhDs in the training and forum, and (3) ensure the ethics appraisal during the whole duration of the PhD thesis (i.e. special chapter in the annual report). This presentation aims to exchange about what was done, the actual and expected impact of actions, what is going right and wrong, and how ULg is managing this dynamics as part of the HR Strategy for researchers project. A discussion with participants is expected on results and new projects. [less ▲]

Detailed reference viewed: 38 (4 ULg)