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See detailA qPCR aptasensor for sensitive detection of aflatoxin M1
Guo, Xiaodong; Wen, Fang; Zheng, Nan et al

in Analytical and Bioanalytical Chemistry (in press)

Aflatoxin M1 (AFM1), one of the most toxic mycotoxins, imposes serious health hazards. AFM1 had previously been classified as a group 2B carcinogen1 and has been classified as a group 1 carcinogen by the ... [more ▼]

Aflatoxin M1 (AFM1), one of the most toxic mycotoxins, imposes serious health hazards. AFM1 had previously been classified as a group 2B carcinogen1 and has been classified as a group 1 carcinogen by the International Agency for Research on Cancer (IARC) of the World Health Organization (WHO).2 Determination of AFM1 thus plays an important role for quality control of food safety. In this work, a sensitive and reliable aptasensor was developed for the detection of AFM1. The immobilization of aptamer through a strong interaction with biotin–streptavidin was used as a molecular recognition element, and its complementary ssDNA was employed as the template for a real-time quantitative polymerase chain reaction (RT-qPCR) amplification. Under optimized assay conditions, a linear relationship (ranging from 1.0×10-4 to 1.0 µg L-1) was achieved with a limit of detection (LOD) down to 0.03 ng L-1. In addition, the aptasensor developed here exhibits high selectivity for AFM1 over other mycotoxins and small effects from cross-reaction with structural analogs. The method proposed here has been successfully applied to quantitative determination of AFM1 in infant rice cereal and infant milk powder samples. Results demonstrated that the current approach is potentially useful for food safety analysis, and it could be extended to a large number of targets. [less ▲]

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See detailComparative study of nutritional quality of potato-wheat steamed and baked breads made with four cultivated potato flour
Liu, Xingli; Mu, Tai-Hua; Sun, Hongnan et al

in International Journal of Food Sciences & Nutrition (in press)

Bread is traditional staple food in western and oriental countries varying in both the ingredients used, preparation methods, and heating methods applied, which are mainly used as an energy source because ... [more ▼]

Bread is traditional staple food in western and oriental countries varying in both the ingredients used, preparation methods, and heating methods applied, which are mainly used as an energy source because of high carbohydrate. Baked bread is popular in western countries. While steamed bread is a type of fermented and steamed wheat-based food of Chinese origin, and represents ∼40% of the wheat consumption in China. [less ▲]

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See detailUpdating the correlation Miospores/Conodonts in upper and uppermost Famennian
Streel, Maurice ULg

in Int. Un. Geol. Sciences, Subcom. Dev. Strat. Newsletter (in press)

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See detailIdentifying Semitic loanwords in Late Egyptian
Winand, Jean ULg

in Dils, Peter; Grossman, Eitan; Richter, Sebastian (Eds.) et al Language Contact and Bilingualism in antiquity: What Linguistic Borrowing into Coptic can tell us about it (in press)

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See detailLe droit public et le tiers. Rapport belge
Bouhon, Frédéric ULg

in Actes des Journées Panaméennes de l’Association Henri Capitant (in press)

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See detailTwo-loop-induced neutrino masses: A model-independent perspective
Aristizabal Sierra, Diego ULg

in PoS - Proceedings of Science (in press)

We disucuss Majorana neutrino mass generation mechanisms at the two-loop order. After briefly reviewing the systematic classification of one-loop realizations, we then focus on a general two-loop ... [more ▼]

We disucuss Majorana neutrino mass generation mechanisms at the two-loop order. After briefly reviewing the systematic classification of one-loop realizations, we then focus on a general two-loop classification scheme which provides a model-independent catalog for neutrino mass models at the two-loop order [less ▲]

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See detailUtiliser les potentialités phénoménotechniques de la Théorie Anthropologique du Didactique : quel prix payer ?
Schneider-Gilot, Marguerite ULg

in Travaux relatifs à la Théorie Anthropologique du Didactique (Université de Toulouse) (in press)

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See detailL’emblématique de Louise de Savoie
Fagnart, Laure ULg; Girault, Pierre-Gilles

in Armas e Troféus. Rivista de Historia, Heraldica, Genealogia (in press)

A l'occasion de cette étude, à la suite des travaux d'Anne-Marie Lecoq (1987), nous sommes revenus sur le discours héraldique de la comtesse et duchesse d'Angoulême, Louise de Savoie, l'influente mère de ... [more ▼]

A l'occasion de cette étude, à la suite des travaux d'Anne-Marie Lecoq (1987), nous sommes revenus sur le discours héraldique de la comtesse et duchesse d'Angoulême, Louise de Savoie, l'influente mère de François Ier. Nous avons présenté et explicité ses devises favorites, à savoir la cordelière, qui évoque autant le nœud de Savoie que la cordelière franciscaine, le vol, sans doute choisi puisque l’aile évoque le L de Louise par homophonie, le bouquet de lis ou le cygne « navré », mais aussi les écus et les monogrammes qui lui sont associés et qui ponctuent enluminures, tapisseries, bas-reliefs et éléments sculptés de l’architecture. Notre intention a été de montrer d’une part comment Louise de Savoie manifeste, par l’intermédiaire de ces signes emblématiques, son identité et son pouvoir, d’autre part comment elle construit, par leur biais, un patrimoine, mental, susceptible de renforcer son clan et ses héritiers. [less ▲]

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See detailConscience interne et connaissance de soi. Descartes et Brentano
Dewalque, Arnaud ULg

in Pradelle, Dominique; Riquier, Camille (Eds.) Descartes et la phénoménologie (in press)

J'examine ici l’approche cartésiano-brentanienne de la conscience. Cette approche comporte une thèse psychologique ("tout ce qui est mental est conscient") et une double thèse épistémologique ("toute ... [more ▼]

J'examine ici l’approche cartésiano-brentanienne de la conscience. Cette approche comporte une thèse psychologique ("tout ce qui est mental est conscient") et une double thèse épistémologique ("toute conscience interne est évidente"/'aucune perception externe n'est évidente"). On a souvent considéré que ces thèses se heurtaient à d’imposantes difficultés et rendaient l’approche cartésiano-brentanienne de la conscience particulièrement problématique. Contre ces critiques, certains commentateurs ont récemment suggéré qu’on pouvait toutefois donner un sens acceptable à la thèse psychologique. Je voudrais suggérer, pour ma part, qu’on peut aussi donner un sens acceptable à la double thèse épistémologique. Dans la section 2, je reconstruit la position cartésiano-brentanienne en termes d'asymétrie épistémique entre perception interne et perception externe. Dans les sections 3 et 4, je discute les objections soulevées par Husserl et par Ryle, et je suggère que la théorie brentaniexnne permet de réfuter ces objections. [less ▲]

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See detailChronos et la clé du temps
Désert, Jean-Benoît ULg; Charon, valérie; Triffaux, Jean-Marc ULg

in Revue des Hôpitaux de Jour Psychiatriques et des Thérapies Institutionnelles (in press), 15(15), 79-85

L’argument de ce XLème Colloque des Hôpitaux de jour psychiatriques nous a plongés dans un abîme de questionnements théoriques et pratiques. Défiés par cette immersion dans les tréfonds du modèle, nous ... [more ▼]

L’argument de ce XLème Colloque des Hôpitaux de jour psychiatriques nous a plongés dans un abîme de questionnements théoriques et pratiques. Défiés par cette immersion dans les tréfonds du modèle, nous avons choisi de nous accrocher aux fondements de notre univers. La mythologie grecque sera donc notre source d’inspiration en mettant un dieu antique à notre disposition. Chronos sera notre guide dans un périple réflexif soumettant nos théories et notre pratique à l’épreuve du temps. Le récit de la conception d’un atelier thérapeutique, l’atelier « Art & Temps », sera notre fil d’Ariane dans notre tentative de symboliser notre pratique thérapeutique quotidienne et ses enjeux. Par la suite, l’exposé d’un cas clinique concrétisera un raisonnement théorique visant à situer notre modèle de prise en charge dans le réseau psychiatrique global. [less ▲]

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See detailA mathematical model of respiration under protective ventilation and extracorporeal CO2 removal therapy
Habran, Simon ULg; Desaive, Thomas ULg; MORIMONT, Philippe ULg et al

Conference (2017, September 27)

The aim of the present study is to build a mathematical model of the respiratory system connected to an extracorporeal CO2 removal device (ECCO2RD) to optimize the gas exchanges efficiency. The model must ... [more ▼]

The aim of the present study is to build a mathematical model of the respiratory system connected to an extracorporeal CO2 removal device (ECCO2RD) to optimize the gas exchanges efficiency. The model must be simple enough to provide rapid solutions and to estimate specific parameters from available clinical data. But it also must be complex enough to be able to simulate the respiratory system when protective ventilation is used and when this system is assisted by an ECCO2RD. [less ▲]

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See detailNi utopie ni solidarisme. Une refonte matérialiste et critique de l'association est-elle possible ?
Frère, Bruno ULg

in Delaunay, Catarina (Ed.) Democracia, promessas, utopias e (des)ilusoes : dilemas e disputas nas arenas publicas (2017)

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See detailExplain Your Thesis in Three Minutes
Kreusch, Marie ULg

Article for general public (2016)

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See detailAncient Egyptian texts in contexts. Towards a conceptual data model (the Thot Data Model - TDM)
Polis, Stéphane ULg; Razanajao, Vincent ULg

in Bulletin of the Institute of Classical Studies (2016), 59(2),

In this paper, we propose a conceptual data model that could be the basis for future implementations of databases and digital corpuses of Ancient Egyptian texts that fully integrate the material ... [more ▼]

In this paper, we propose a conceptual data model that could be the basis for future implementations of databases and digital corpuses of Ancient Egyptian texts that fully integrate the material dimensions of writing. The types of metadata that can be used for documenting the elements and relationships of this model are discussed and the resources (URIs) available for its online implementation (in the perspective of the ‘linked open data’ movement) are examined. [less ▲]

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See detailShear banding simulation in clay rock around an underground opening, and its contact mechanism with the gallery’s lining
Charlier, Robert ULg; Salehnia, Fatemeh

in Proc. 5th International conference on geotechnical engineering and soil mechanics (2016, November 15)

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See detailMeasurements of reference ISO nozzles by high-speed imaging
De Cock, Nicolas ULg; Massinon, Mathieu ULg; Nuyttens, David et al

in Crop Protection (2016), 89

Agricultural spray characteristics determine the efficiency of a pesticide application because size and velocity affect droplet trajectory and impact behavior. At present, the relevance of different ... [more ▼]

Agricultural spray characteristics determine the efficiency of a pesticide application because size and velocity affect droplet trajectory and impact behavior. At present, the relevance of different characterization techniques remains controversial since discrepancies may be significant between measurements performed in different laboratories. A digital image acquisition technique and analysis algorithm is proposed for droplet size and velocimetry measurements as an alternative to well-established techniques such as the Phase Doppler Particle Analyzer (PDPA) or laser diffraction spectrometry (LDS). The algorithm requires double exposed shadow images acquired in a back-lighted arrangement with a Particle Image Velocimetry (PIV) camera and a pulsed light emitting diode (LED). Spatial illumination heterogeneities are corrected by subtracting from each image a mean background acquired on several images without any particle. The algorithm accuracy is ensured by the rejection of out-of-focus particles using a focus parameter depending on gradient intensity at the particle edges. Thresholds for focus particle selection were determined by studying the evolution of the focus parameter and the error on particle size measurements from images containing droplets with uniform size at various distance of the object plane. Selected droplets were identified on both pairs of images to determine their size and velocity. Droplet size distributions were corrected to account for the uneven sampling probability caused by the volumetric method. Droplet size distributions of a set of reference nozzle/pressure combinations defined in the ISO/DIS 25358 were measured. The image technique was able to distinguish each of the reference sprays well. Comparison with PDPA measurements showed that the imaging technique tends to measure an equivalent Dv50, a lower Dv10 and a higher Dv90 leading therefore to a higher relative span factor. Velocity measurements showed good agreement between both techniques except for one nozzle/pressure combination. [less ▲]

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See detailLoadbearing capacity criteria in fire resistance testing
Dumont, Fabien ULg; Wellens, Eric ULg; Gernay, Thomas ULg et al

in Materials and Structures (2016), 49(11), 4565-4581

The European system for fire testing and classification of loadbearing building elements lacks consistency because the two standards that have to be applied prescribe different criteria for assessing the ... [more ▼]

The European system for fire testing and classification of loadbearing building elements lacks consistency because the two standards that have to be applied prescribe different criteria for assessing the loadbearing performance. This article analyzes the implications of the present conflict between the standard for testing and the standard for classification. The prescribed criteria for loadbearing performance are related to the exceedance of deflection and rate of deflection thresholds. A database of 46 fire resistance tests performed at the University of Liege is collected that contains the time at which these thresholds are reached in fire tests with different typologies of elements (walls, floors, columns and beams). Then, the loadbearing performance (and hence the fire resistance rating) can be derived according to the two standards. The evolutions of deflection and rate of deflection during the tests are also analyzed to gain a better understanding of the adequacy of the standards. The selection of one or the other standard affects the time at which “failure” is deemed to occur in fire tests. Statistically speaking, the difference in terms of failure time that results from using one or the other standard has a 25% probability to exceed 10%. In certain cases, this results in a difference in fire resistance rating; this was observed for 3 of the analyzed tests. The apparent contradiction in two codes in application has potential practical implications and therefore needs to be solved. The article suggests some guidelines for defining homogenized and consistent criteria. [less ▲]

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See detailStability and Consistency of the LISP Pull Routing Architecture
Li, Yue; Saucez, Damien; Iannone, Luigi et al

in Proc. IEEE Workshop on Network Measurements (WNM) (2016, November)

Future Internet has been a hot topic for the last decade. One of the approaches put forward in order to revise the Internet architecture is LISP~--~Locator/ID Separation Protocol, which leverages the ... [more ▼]

Future Internet has been a hot topic for the last decade. One of the approaches put forward in order to revise the Internet architecture is LISP~--~Locator/ID Separation Protocol, which leverages the separation of the identifier and the locator roles of IP addresses. Contrary to the classical push model used by the BGP-based routing architecture, LISP relies on a pull model. In particular, routing information is pulled from a new network element, the Mapping System, to provide the association between the identifier (i.e., the address used to identify a host inside a domain) and a list of locators (i.e., the addresses to locate an attachment point) upon an explicit query. In this paper, we evaluate a LISP Mapping System deployment in the public LISP Beta Network from two standpoints: Stability and Consistency. Our measurements show that the mapping information is stable over time and consistent between the different mapping entities and the vantage points. Our analysis shows that there are cases where the Mapping System is unstable and/or inconsistent, hence, beside proposing a taxonomy in order to classify them, we carry out an in-depth investigation of such cases so to provide hints on how to improve the performance of LISP. [less ▲]

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See detailOn the Analysis of Internet Paths with DisNETPerf, a Distributed Paths Performance Analyzer
Wassermann, Sarah ULg; Casas, Pedro; Donnet, Benoît ULg et al

in Proc. 10th IEEE Workshop on Network Measurements (WNM) (2016, November)

Traceroute is the most widely used Internet path analysis tool today to study the topology of the Internet and to diagnose routing failures as well as poor performance events. A major limitation of ... [more ▼]

Traceroute is the most widely used Internet path analysis tool today to study the topology of the Internet and to diagnose routing failures as well as poor performance events. A major limitation of traceroute when the destination is not controllable by the user is its inability to measure reverse paths, i.e., the path from any given destination back to the source. This is a major drawback for ISPs, who need to understand the performance of the Internet paths connecting popular services (e.g., YouTube and Facebook) to their customers. Even if public servers and distributed measurement platforms can provide partial reverse path visibility through ad-hoc measurements, there is still a need for a structured approach capable of analyzing the performance of Internet paths connecting any pair of nodes (servers, routers, hosts, etc.). While the problem of reverse traceroute has been addressed in the past, proposed techniques rely on IP address spoofing – which might lead to security concerns, and assume the availability of certain route-tracking options –, which might not be available. In this paper, we introduce and evaluate DisNETPerf, a new tool which provides exactly the same type of information as traceroute, but for paths connecting arbitrarily selected nodes. DisNETPerf works by firstly locating probes (i.e., measurement points) that are the closest to a given target node, using them to perform traceroute measurements from the target point-of-view to a given destination for path performance monitoring and troubleshooting purposes. We propose two techniques for probe location, and demonstrate that the reverse path (from server to users) can be measured with very high accuracy in certain scenarios. We also analyze relevant characteristics of Internet paths and distributed measurement platforms, which reinforce the applicability and relevance of DisNETPerf in current Internet. [less ▲]

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See detailReverse Traceroute with DisNETPerf, a Distributed Internet Paths Performance Analyzer
Wassermann, Sarah ULg; Casas, Pedro

in Proc. Demonstrations of the 41th Annual IEEE Conference on Local Computer Networks (LCN-Demos 2016) (2016)

Traceroute is the most widely used Internet path diagnosis tool today. A major limitation of traceroute when the destination is not controllable by the user is its inability to measure reverse paths, i.e ... [more ▼]

Traceroute is the most widely used Internet path diagnosis tool today. A major limitation of traceroute when the destination is not controllable by the user is its inability to measure reverse paths, i.e., the path from a destination back to the source. In this demo session, we showcase DisNETPerf, a new tool to perform reverse traceroute measurements. DisNETPerf is able to collect measurements from the server to the user for path performance monitoring and troubleshooting purposes, even when the server is not under the control of the experimenter. DisNETPerf uses RIPE Atlas, a largely distributed active measurements platform to perform traceroute measurements from any arbitrarily selected server in the Internet. [less ▲]

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