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See detailGlobal simulation of UV atmospheric emissions on Mars
González-Galindo; López-Valverde; Forget et al

Poster (2016, April)

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See detailThe O2(a1Δ) Venus nightglow intensity: internal versus solar activity control
Soret, Lauriane ULg; Gérard, Jean-Claude ULg

Conference (2016, April)

Introduction: The O2(a1Δg) Venus nightglow emission at 1.27 μm occurs in the atmospheric region governed by the subsolar to antisolar circulation. Several studies showed that the intensity of this ... [more ▼]

Introduction: The O2(a1Δg) Venus nightglow emission at 1.27 μm occurs in the atmospheric region governed by the subsolar to antisolar circulation. Several studies showed that the intensity of this emission is highly variable on a timescale of hours. Here, we study the possible correlation between the solar flux and the O2 infrared emission using VIRTIS-VEx spectral images at 1.27 μm that has been predicted to exist by theVTGCM model calculations by Bougher and Borucki(1994). VIRTIS data: Using the entire VIRTIS-M-IR nadir database, Soret et al. (2014) generated seven statistical maps of the O2(a1Δg) emission, each containing 500 observations. The purpose was to analyze the location of the brightest spot of the emission and its variations over time. Here, we analyze the intensity of the emission over time. Several methods have been used by Soret et al., (2015) to do so (evolution of the emission maximum, evolution of the average intensity, …) Here we present the results of a new analysis using a masking technique to calculate the time evolution of the nightglow brightness. However, none of them follow the same trend over time. Solar flux data: We now focus on solar flux variations in the time of VIRTIS observations (between May 2006 and October 2008), which were collected during a deep solar minimum. We use the SOHO-CELIAS/SEM (Judge et al., 1998) EUV daily average full solar disk fluxes at 1 AU between 0.1 and 50 nm available from the Space Sciences Center of the University of Southern California. EUV0.1–50 daily average fluxes decrease from 2.6 in May 2006 to 1.9 in October 2008 at the Earth. These values have been adapted to Venus by taking into account the distance from the Sun to the planet, but also the shift in date, considering the difference in solar longitude of the two planets. Values at Venus vary from 4.4 to 3.4, which corresponds to a decrease of 10.4% of the solar flux at Venus compared to a complete solar cycle (ranging from 13.5 to 3.9) Comparison of VIRTIS and SEM datasets: The linear correlation coefficient between the solar flux and the intensity peak is found to be 0.62, which expresses the global decreasing trend for both quantities. This coefficient is not higher because internal variations of the two studied variables do not occur simultaneously. More significantly, the correlation coefficient between the solar flux and the averaged intensities is found to be 0.35, meaning that no relation-ship exists between the O2(a1Δg) brightness and the solar activity. Conclusions: Contrary to the VTGCM calculations, we do not observe here a correlation between the O2(a1Δg) brightness and the solar flux. However, VIRTIS data were acquired during a deep solar minimum and, more importantly, during a relatively stable phase of the solar activity. A high level of variability of the O2(a1Δg) emission has been detected in the same dataset from day to day though (Hueso et al., 2008; Soret et al., 2014). It thus appears that the variability is more controlled by internal than external conditions: transport appears to play a major role in the nightglow emissions than the solar activity eventually does. This conclusion is at least valid for solar minimum conditions. A space mission with global imaging capabilities over an entire solar cycle would definitely allow determining the relative role played by solar activity and internal factors. [less ▲]

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See detailInfluence of a liquid nutritional supplement on water intake in experimental Beagle dogs
Rotat, Christelle; Lhoest, Estelle; Rauw, Anaelle ULg et al

in Open Journal of Veterinary Medicine (2016), 6

The objectives were to evaluate the effects of a liquid nutritional supplement formulated for dogs on water intakes and urine output. A liquid nutritional supplement was tested by way of a cross-over ... [more ▼]

The objectives were to evaluate the effects of a liquid nutritional supplement formulated for dogs on water intakes and urine output. A liquid nutritional supplement was tested by way of a cross-over design in 8 experimental healthy Beagle dogs (4 males and 4 females, aged 9.3 years). The supplement (87 percent water, 2.7 percent protein, 2.6 percent fat, 0.4 percent crude fiber) was added to water and tested at 2 incorporation rates (50 or 70 ml/day/dog—D50 or D70) versus the control placebo (CO-water only). The dogs were kept in a controlled environment; water intakes and urine output were measured. Individual water intakes were characterised by large variations. Mean water intake increased significantly by 28 percent in dogs receiving the liquid nutritional supplement, in both genders, irrespectively of the dosage. Urine output was also increased, by 55 percent. Faeces scores remained unchanged. It was concluded that the liquid supplement increased water intake and urine output in a safe way, without increasing dramatically the daily dietary sodium chloride intake. The recommended dosage of the manufacturer—50 ml/day for dogs weighing 10 - 20 kg BW is efficient. Increasing the dosage had no advantage, nor adverse effects. Increased water intake and urine output is of interest for dogs suffering from urolithiasis. [less ▲]

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See detailRELMs in the Realm of Helminths
Horsnell, William G. C.; Dewals, Benjamin G ULg

in Trends in parasitology (2016)

Resistin-like molecule (RELM) proteins are essential for immunity to helminths. Recently, Chen and collaborators identified a dominant role for RELMalpha over RELMbeta in host immunity to Nippostrongylus ... [more ▼]

Resistin-like molecule (RELM) proteins are essential for immunity to helminths. Recently, Chen and collaborators identified a dominant role for RELMalpha over RELMbeta in host immunity to Nippostrongylus brasiliensis using a double knockout system. The study highlighted how important and yet divergent the contributions of these proteins are in the control of helminth infections. [less ▲]

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See detailFragmented Territories: Incomplete Enclosures and Agrarian Change on the Agricultural Frontier of Samlaut District, North-West Cambodia
Diepart, Jean-Christophe ULg; Sem, Thol

in Journal of Agrarian Change (2016)

In Cambodia, the interactions between large-scale land investment and land titling gathered particular momentum in 2012–13, when the government initiated an unprecedented upland land titling programme in ... [more ▼]

In Cambodia, the interactions between large-scale land investment and land titling gathered particular momentum in 2012–13, when the government initiated an unprecedented upland land titling programme in an attempt to address land tenure insecurity where large-scale land investment overlaps with land appropriated by peasants. This paper is based on a spatially explicit ethnography of land rights conducted in the Samlaut district of north-west Cambodia – a former Khmer Rouge resistance stronghold – in a context where the enclosures are both incomplete and entangled with post-war, socially embedded land tenure systems. We discuss how this new pattern of fragmentation affects the prevailing dynamics of agrarian change. We argue that it has introduced new forms of exclusion and a generalized perception of land tenure uncertainty that is managed by peasants through the actualization of hybrid land tenure arrangements borrowing from state rules and local consensus. In contrast with common expectations about land formalization, the process reinforces the patterns of social differentiation initiated by land rent capture practices of early migrants and pushes more vulnerable peasants into seeking wage labour and resorting to job migration. [less ▲]

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See detailOpen Access and Discovery Tools: How do Primo Libraries Manage Green Open Access Collections?
Renaville, François ULg

in Varnum, Kenneth J. (Ed.) Exploring Discovery: The Front Door to Your Library's Licensed and Digitized Content (2016)

Scholarly Open Access repositories contain lots of treasures including rare or otherwise unpublished materials and articles that scholars self-archive, often as part of their institution's mandate. But it ... [more ▼]

Scholarly Open Access repositories contain lots of treasures including rare or otherwise unpublished materials and articles that scholars self-archive, often as part of their institution's mandate. But it can be hard to discover this material unless users know exactly where to look. Since the very beginning, libraries have played a major role in supporting the OA movement. Next to all services they can provide to support the deposit of research output in the repositories, they can make Open Access materials widely discoverable by their patrons through general search engines (Google, Bing...), specialized search engines (like Google Scholar) and library discovery tools, thus expanding their collection to include materials that they would not necessarily pay for. In this paper, we intend to focus on two aspects regarding Open Access and Primo discovery tool. In early 2013, Ex Libris Group started to add institutional repositories to Primo Central Index (PCI), their mega-aggregation of hundreds of millions of scholarly e-resources. After 2 years, it may be interesting to take stock of the current situation of PCI regarding Open Access institutional repositories. On basis of a survey to carry out among the Primo community, the paper also shows how libraries using Primo discovery tool integrate Green Open Access contents in their catalog. Two major ways are possible for them: Firstly, they can directly harvest, index and manage any repository in their Primo and display those free contents next to the more traditional library collections; Secondly, if they are PCI subscribers, they can quickly and easily activate any, if not all, of the Open Access repositories contained PCI, making thus the contents of those directly discoverable to their end users. [less ▲]

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See detailDer Archäotraduktosaurus blickt zurück
Viehöver, Vera ULg

in ReLü: Rezensionszeitschrift zur Literaturübersetzung (2016)

Der Archäotraduktosaurus blickt zurück Vera Viehöver über Sourcier ou cibliste von Jean-René Ladmiral Jean-René Ladmiral, der sich selbst als „letzten Überlebenden eines längst vergangenen, vordigitalen ... [more ▼]

Der Archäotraduktosaurus blickt zurück Vera Viehöver über Sourcier ou cibliste von Jean-René Ladmiral Jean-René Ladmiral, der sich selbst als „letzten Überlebenden eines längst vergangenen, vordigitalen Erdzeitalters der Übersetzung“ sieht, gehört zu den Gründungsvätern der institutionalisierten Übersetzungswissenschaft in Frankreich. Der Band Sourcier ou cibliste (2014) versammelt Beiträge des Autors aus mehr als drei Jahrzehnten, die bislang zum Teil nur schwer auffindbar waren: die Bilanz eines leidenschaftlichen Kämpfers, der ein Übersetzen für die Leser fordert – scharf im Urteil gegen die Sakralisierung und Fetischisierung von literarischen Texten. [less ▲]

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See detailContribution à l'optimisation technico-économique des élevages laitiers en Wallonie : l'intervalle vêlage
Dalcq, Anne-Catherine ULg

Conference given outside the academic context (2016)

Au cours des dernières décennies, l’intervalle vêlage des vaches laitières a eu tendance à s’allonger au niveau mondial, européen et belge. Les causes sont multiples : évolution du système de production ... [more ▼]

Au cours des dernières décennies, l’intervalle vêlage des vaches laitières a eu tendance à s’allonger au niveau mondial, européen et belge. Les causes sont multiples : évolution du système de production laitière, augmentation du niveau de production,… Les conséquences sont nombreuses également mais se traduisent-elles par un impact économique pour l’éleveur laitier ? La recherche présentée aujourd’hui se base sur près de 1800 bilans comptables de 400 exploitations laitières, fournis par le service technico-économique de l’Association Wallonne de l’Elevage, entre 2007 et 2014, pour déterminer l’impact économique de la durée de l’intervalle vêlage et définir l’optimum technico-économique de ce paramètre de management. Faut-il garder en tête « le veau par vache et par an » ou est-il intéressant économiquement d’allonger la période entre deux vêlages pour une même vache ? L’étude révèle qu’il y a bien une relation entre l’intervalle vêlage et les résultats économiques d’une exploitation. De plus, il n’y aurait pas un seul optimum d’intervalle vêlage mais plusieurs, dépendant du type d’exploitation et plus particulièrement du mode d’alimentation. L’optimum de l’intervalle vêlage a tendance à être plus court pour les exploitations à alimentation plutôt intensive et plus long pour les exploitations à alimentation plutôt extensive. Cependant il ne s’agit que de tendances observées, un travail plus approfondi doit encore être réalisé pour confirmer ces tendances et définir des objectifs plus précis à poursuivre pour maximiser la rentabilité de son exploitation. [less ▲]

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See detailCharacterization of monovarietal virgin olive oils from introduced cultivars in eastern Morocco
Mansouri, Farid ULg; Benmoumen, A.; Richard, Gaetan ULg et al

in Rivista Italiana Sostanze Grasse (2016), 93

The aim of this study was to characterize monovarietal virgin olive oils (VOOs) of new high-density planting system of three European cultivars (Arbequina, Arbosana and Koroneiki), recently introduced in ... [more ▼]

The aim of this study was to characterize monovarietal virgin olive oils (VOOs) of new high-density planting system of three European cultivars (Arbequina, Arbosana and Koroneiki), recently introduced in eastern Morocco. VOOs’ characterization has been carried out by analyzing several parameters, such as quality indexes, fatty acid contents, minor components, and olive oils’ oxidative stability index (OSI). In this study, we have also conducted a comparison between these monovarietal VOOs and olive oils of autochthones cultivar Picholine marocaine. Significant differences between the analyzed VOOs were highlighted. Koroneiki’s VOO had a high phenols content (493.66 mg/kg) and, consequently, the best oxidative stability (94.83 h); Arbrosana’s VOO was distinguished by its abundance of α-tocopherol (460.07 mg/kg) and by an intermediate OSI (64.83 h). In addition, results showed, firstly, that in all the analyzed oils decarboxymethyl ligstroside aglycone and decarboxymethyl oleuropein aglycone were the main phenolic compounds, and, secondly, that VOOs of Koroneiki and Arbosana seem to have similar profiles, with a high content of natural antioxidants and a high oleic/linoleic ratio, thus boasting a better shelf life. [less ▲]

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See detailLe législateur wallon sommé de revoir le découpage des circonscriptions électorales
Bouhon, Frédéric ULg

E-print/Working paper (2016)

Le caractère proportionnel de notre système électoral n’est pas un vain mot et ne peut être contourné. C’est ce que viennent de rappeler deux arrêts, le premier, prononcé par le Conseil d’État, datant du ... [more ▼]

Le caractère proportionnel de notre système électoral n’est pas un vain mot et ne peut être contourné. C’est ce que viennent de rappeler deux arrêts, le premier, prononcé par le Conseil d’État, datant du 20 novembre 2014 (n° 229.252) , le second, rendu par la Cour constitutionnelle le 26 novembre 2015 (n° 169/2015) . Le Parlement wallon doit revoir la carte électorale en vue des prochaines élections. [less ▲]

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See detailMusiciens et musiciennes à Mari (tell Hariri, Syrie) durant la fin de l’époque des shakkanakkus.
Colonna d'Istria, Laurent ULg

Scientific conference (2016, March 31)

Les sources écrites de la fin de l’époque des shakkanakkus (19e siècle av. J.-C.) sont en grande majorité des bordereaux administratifs découverts sur le site de Mari (Tell Hariri, Syrie). Ces quelques ... [more ▼]

Les sources écrites de la fin de l’époque des shakkanakkus (19e siècle av. J.-C.) sont en grande majorité des bordereaux administratifs découverts sur le site de Mari (Tell Hariri, Syrie). Ces quelques 2000 documents nous renseignent sur divers aspects de l’administration palatiale à cette époque, et citent à plusieurs reprises des musiciens et musiciennes. Appartenant au personnel du palais, ces musicien(ne)s recevaient des rations alimentaires et divers biens dont certains relatifs à leur fonction. Par ailleurs, étant responsables de transactions administratives, ces individus participaient activement à la gestion des biens du palais. Enfin, à l’instar de militaires ou de scribes, des musiciens font fonction d’intermédiaires dans la livraison de biens précieux offerts à différentes personnes appartenant à des élites, en particulier des seigneurs tribaux amorrites. [less ▲]

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See detailAbout Quaternary prevention in Public health ; comment on Dr Jong-Myon Bae paper
Jamoulle, Marc ULg

in Journal of Preventive Medicine and Public Health = Yebang Uihakhoe Chi (2016), 49(2), 139-140

The recent paper of Dr Jong-Myon Bae about Quaternary Prevention and Public Health in your journal has attracted my interest. The spread of this concept is beyond all expectation and I am quite happy it ... [more ▼]

The recent paper of Dr Jong-Myon Bae about Quaternary Prevention and Public Health in your journal has attracted my interest. The spread of this concept is beyond all expectation and I am quite happy it contributes to the analytic thinking of complexity of health care. The particular application of the quaternary prevention (P4) concept is absolutely brilliant. Nevertheless I would propose some slight modifications to the table 1 edited by the author which I have taken the liberty to reproduce here with the due authorization of Dr Bae and after several mail exchanges with him. [less ▲]

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See detailDiurnal cycle and multi-decadal trend of formaldehyde in the remote atmosphere near 46° N
Franco, Bruno ULg; Marais, Eloise A.; Bovy, Benoît ULg et al

in Atmospheric Chemistry and Physics (2016), 16

Only very few long-term records of formaldehyde (HCHO) exist that are suitable for trend analysis. Furthermore, many uncertainties remain as to its diurnal cycle, representing a large short-term ... [more ▼]

Only very few long-term records of formaldehyde (HCHO) exist that are suitable for trend analysis. Furthermore, many uncertainties remain as to its diurnal cycle, representing a large short-term variability superimposed on seasonal and inter-annual variations that should be accounted for when comparing ground-based observations to e.g., model results. In this study, we derive a multi-decadal time series (January 1988 – June 2015) of HCHO total columns from ground-based high-resolution Fourier transform infrared (FTIR) solar spectra recorded at the high-altitude station of Jungfraujoch (Swiss Alps, 46.5° N, 8.0° E, 3580 m a.s.l.), allowing for the characterization of the mid-latitudinal atmosphere for background conditions. First we investigate the HCHO diurnal variation, peaking around noontime and mainly driven by the intra-day insolation modulation and methane (CH4) oxidation. We also characterize quantitatively the diurnal cycles by adjusting a parametric model to the observations, which links the daytime to the HCHO columns according to the monthly intra-day regimes. It is then employed to scale all the individual FTIR measurements on a given daytime in order to remove the effect of the intra-day modulation for improving the trend determination and the comparison with HCHO columns simulated by the state-of-the-art chemical transport model GEOS-Chem v9-02. Such a parametric model will be useful to scale the Jungfraujoch HCHO columns on satellite overpass times in the framework of future calibration/validation efforts of space borne sensors. GEOS-Chem sensitivity tests suggest then that the seasonal and inter-annual HCHO column variations above Jungfraujoch are predominantly led by the atmospheric CH4 oxidation, with a maximum contribution of 25 % from the anthropogenic non-methane volatile organic compound precursors during wintertime. Finally, trend analysis of the so-scaled 27-year FTIR time series reveals a long-term evolution of the HCHO columns in the remote troposphere to be related with the atmospheric CH4 fluctuations and the short-term OH variability: +2.9 %/yr between 1988 and 1995, -3.7 %/yr over 1996-2002 and +0.8/% yr from 2003 onwards. [less ▲]

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See detailGembloux veut sauver les oliviers
Jijakli, Haissam ULg

Article for general public (2016)

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See detailUne solution belge pour sauver les oliviers du sud de l'Italie?
Jijakli, Haissam ULg

Article for general public (2016)

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See detailRevealing the role of network rigidity on the fragility evolution of glass-forming liquids
Yildirim, Can ULg; Raty, Jean-Yves ULg; Micoulaut, Mathieu

E-print/Working paper (2016)

If quenched fast enough, a liquid is able to avoid crystallization and will remain in a metastable supercooled state down to the glass transition, with an important increase in viscosity and relaxation ... [more ▼]

If quenched fast enough, a liquid is able to avoid crystallization and will remain in a metastable supercooled state down to the glass transition, with an important increase in viscosity and relaxation time towards equilibrium upon further cooling [1,2]. There are important differences in the way liquids relax as they approach the glass transition, rapid or slow variation in dynamic quantities under moderate temperature changes, and a simple means to quantify such variations is provided by the concept of "fragility". Here, we report molecular dynamics simulations of a typical network-forming glass, and find that the relaxation behaviour of the supercooled liquid is strongly correlated to the variation of rigidity with temperature and the spatial distribution of the corresponding topological constraints which, ultimately connect to fragility minima . This permits extending the fragility concept to aspects of topology/rigidity, and to the degree of homogeneity of the atomic-sale interactions for a variety of structural glasses. [less ▲]

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See detailValeurs de l'information et performances algorithmiques pour des problèmes multi-périodes et stochastiques
Pironet, Thierry ULg

Scientific conference (2016, March 30)

voir document

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See detailhCG: false positives and persistent hCG levels
VALDES SOCIN, Hernan Gonzalo ULg

Scientific conference (2016, March 29)

Human Chorionic gonadotropin (hCG) is a complex glycoprotein with several bioactive forms. These five variants comprise placental forms (hyperglycosilated hCG is the first form, then after 10 weeks of ... [more ▼]

Human Chorionic gonadotropin (hCG) is a complex glycoprotein with several bioactive forms. These five variants comprise placental forms (hyperglycosilated hCG is the first form, then after 10 weeks of pregnancy total hCG takes over), cancer promoter forms (hCGb, hyperglycosilated hCGb), and a pituitary form (sulfated hCG). Current routine laboratory tests do not discriminate between these multiple variants of hCG. Low persistent detectable levels of hCG may be associated with various benign and malignant conditions, such as quiescent gestational trophoblastic disease, raised pituitary hCG, or false positive elevation caused by circulating heterophilic antibodies. Clinico-biological discussion are mandatory to avoid erroneous diagnosis and treatment.In this review we summarize and discuss the different causes of false positive hCG assay. We suggest that current gynecological protocols for the diagnosis and treatment of trophoblastic disease should consider the inclusion of hCG test in urine and/or a test for heterophilic antibodies, when appropriate to avoid unnecessary studies and treatment. References. Valdes Socin H, Syrios P, Gadisseur R, et al. Persistent low levels of hCG: please do not miss phantom hCG! (pseudohypergonadotropinemia syndrome). Acta Clinica Belgica (abstract) 2013;68:465. Cole LA. hCG, the wonder of today’s science. Reprod Biol Endocrinol 2012;10:24–42. B. González Aguilera, P. Syrios, R. Gadisseur, F. Luyckx, E. Cavalier, A. Beckers & H. Valdes-Socin. Persistent low levels of serum hCG due to heterophilic mouse antibodies: an unrecognized pitfall in the diagnosis of trophoblastic disease . Gynecological Endocrinology 2016. DOI:10.3109/09513590.2015.1132303 [less ▲]

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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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