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See detailEntre sympathie pour la cause et passage à l'acte: analyse du processus de dérive radicale
Garcet, Serge ULg

Scientific conference (2015, September 18)

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See detailImpact des attentes identitaires sur la nature de l'engagement individuel et la radicalisation
Garcet, Serge ULg

Scientific conference (2015, September 18)

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See detailInnovation in Veterinary Education. Innovative tools to teach pregnancy and parturition in the horse.
Hanzen, Christian ULg; Govaere, Jan

Conference (2015, September 18)

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See detailNid de coucou. De quelques performances filmées dans l'espace public.
Hamers, Jérémy ULg

Conference (2015, September 18)

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See detailDietary mineral intakes of young Tibetan children living in areas endemic for Kashin-Beck disease: preliminary results of a cross-sectional survey
DERMIENCE, Michael ULg; Mathieu, Françoise; Li, Xiaowei et al

Conference (2015, September 18)

Kashin-Beck disease (KBD) is an endemic and chronic osteochondropathy whose etiology remains unclear. Environmental factors are assumed to be involved, among which the selenium and iodine deficiency is ... [more ▼]

Kashin-Beck disease (KBD) is an endemic and chronic osteochondropathy whose etiology remains unclear. Environmental factors are assumed to be involved, among which the selenium and iodine deficiency is frequently cited. The prevalence rate may be high in some rural areas of the Tibet Autonomous Region. The diet of the rural community is significantly different from the other communities (nomads and city-dwellers), who remains unaffected by KBD. Because their foods are mainly derived from local agriculture and artisanal production, their mineral composition may show significant discrepancies when compared with food composition data. The present survey aims at assessing the mineral dietary intakes of young Tibetan children living in rural areas endemic for the Kashin-Beck disease. A cross-sectional survey enrolling 250 children was carried out. The intakes were recorded for two days, on two different seasons, by the 24-hour food recall method. The minerals investigated were selected for their implication in bone metabolism and a specific food composition table was compiled from the China Food composition (book 1, 2nd edition), the USDA Food search for Windows (Version 1.0, Database version SR23), and a broad investigation on mineral composition of local and traditional Tibetan foods (Dermience et al., 2014). The calculation of daily intakes for the first season is now complete and some trends are emerging. Preliminary results suggest, inter alia, that the intakes of calcium are too low with unfavorable calcium to phosphorus ratio. On the contrary, sodium and manganese intakes are too high and could exceed tolerable upper levels. [less ▲]

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See detailCours No 1: Astrophysique et Techniques Spatiales: Ingés aéro/ Ingés Phys 2015-2016 (Fichier PDF + vidéos: mov)
Surdej, Jean ULg

Learning material (2015)

Dans la première partie du cours consacré à l'astrophysique galactique, nous étudierons les propriétés globales des astres (luminosités, couleurs, distances, masses, rayons). Dans la seconde partie, nous ... [more ▼]

Dans la première partie du cours consacré à l'astrophysique galactique, nous étudierons les propriétés globales des astres (luminosités, couleurs, distances, masses, rayons). Dans la seconde partie, nous aborderons l'étude des astres extragalactiques. Enfin, la troisième partie du cours sera consacrée à la compréhension des instruments et télescopes modernes utilisés tant au sol que dans l'espace. [less ▲]

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See detailSoluble biomarkers in OA: can they be used as indicator of HA re-injection?
Henrotin, Yves ULg

Conference (2015, September 18)

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See detailBreakthrough in cardiac arrest: reports from the 4th Paris International Conference.
Kudenchuk, PJ; Sandroni, C; Drinhaus, HR et al

in Annals of Intensive Care (2015)

Jean-Luc Diehl The French Intensive Care Society organized on 5th and 6th June 2014 its 4th Paris International Conference in Intensive Care", whose principle is to bring together the best international ... [more ▼]

Jean-Luc Diehl The French Intensive Care Society organized on 5th and 6th June 2014 its 4th Paris International Conference in Intensive Care", whose principle is to bring together the best international experts on a hot topic in critical care medicine. The 2014 theme was "Breakthrough in cardiac arrest", with many high-quality updates on epidemiology, public health data, pre-hospital and in-ICU cares. The present review includes short summaries of the major presentations, classified into six main chapters: Epidemiology of CA Pre-hospital management Post-resuscitation management: targeted temperature management Post-resuscitation management: optimizing organ perfusion and metabolic parameters Neurological assessment of brain damages Public healthcare." [less ▲]

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See detailWhat Darkens the Greenland Ice Sheet?
Tedesco, M; Doherty, S.; Warren, S. et al

in EOS : Transactions, American Geophysical Union (2015)

Most of the massive ice sheet that covers roughly four fifths of Greenland melts at the surface in summer. As long as the ice sheet regains its mass in the winter, this is not catastrophic. However, if ... [more ▼]

Most of the massive ice sheet that covers roughly four fifths of Greenland melts at the surface in summer. As long as the ice sheet regains its mass in the winter, this is not catastrophic. However, if the ice sheet melted entirely, sea levels would rise by more than 7 meters, with obvious and severe consequences for human civilization. Not surprisingly, scientists are working hard to determine if and when the ice sheet will transition (or if it has already transitioned) from a stable state to a net mass loss state. The impact of increasing greenhouse gas levels on the Greenland ice sheet (GrIS) depends on many complex and interacting factors. One is the ice sheet’s albedo—the fraction of incoming solar radiation that is reflected from the surface of the ice sheet. Indeed, scientists have determined that net solar radiation reaching the ice is the largest contributor to the energy balance driving melting [e.g., van den Broeke et al., 2011]. Despite the crucial role of albedo in energy balance, we have yet to quantify the role of the different processes driving it. Such an understanding is crucial to determining the past behavior of the GrIS and projecting its future contribution to sea level rise. Scientists seeking to quantify how much various factors contribute to ice sheet albedo face numerous challenges. These include intrinsic limitations in current observational capabilities (e.g., spatial and radiometric resolution of currently available spaceborne sensors) and limitations on how accurately surface energy balance models handle ice sheet albedo. Moreover, the sparseness in space and time of in situ observations of quantities such as impurity concentrations, biological processes, and grain growth impedes our ability to separate their respective contributions to broadband albedo (integrated over the entire spectrum). [less ▲]

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See detailEt... si nous montrions l'exemple?
Choffray, Jean-Marie ULg

Diverse speeche and writing (2015)

« Montrer l’exemple n’est pas le principal moyen d’influencer les autres, c’est le seul moyen! » (A. Einstein). Texte préparé pour l'Assemblée du 17 septembre 2015 de l'Association des Professeurs de l ... [more ▼]

« Montrer l’exemple n’est pas le principal moyen d’influencer les autres, c’est le seul moyen! » (A. Einstein). Texte préparé pour l'Assemblée du 17 septembre 2015 de l'Association des Professeurs de l'Université de Liège. [less ▲]

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See detailGrandeur et misère de la démocratie
Debras, François ULg

Conference given outside the academic context (2015)

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See detailThe system of sanctions for the illicit trade of nuclear goods
Colussi, Ilaria Anna ULg

Conference (2015, September 17)

In the area of nuclear non proliferation, the illicit trade of goods that could be used to create nuclear weapons cannot be neglected. Indeed, many States and non-States actors seeking nuclear weapons or ... [more ▼]

In the area of nuclear non proliferation, the illicit trade of goods that could be used to create nuclear weapons cannot be neglected. Indeed, many States and non-States actors seeking nuclear weapons or wanting to maintain existing nuclear weapons arsenals or capabilities look for obtaining, acquiring and transporting in their own States or locations dual-use technologies, items and materials. This entails a chain of “actors”: (a) the suppliers of goods, (b) a procurement organization, (c) a trade company for the procurement of goods, (d) intermediaries in transport, and (e) banks which could finance the operations. Therefore, a set of measures for preventing the illicit trade, and for sanctioning the occurred one, need to be defined. The paper aims at focusing on the “sanctioning” phase for illicit trade of dual-use nuclear items. It analyses the set of sanctions established at the international and European Union level, precisely the economic sanctions (e.g.: embargos), the financial one (i.e., freezing of assets), the visa and travel bans, and the limitations on transport of goods (i.e., export/import restrictions), by considering the legal texts adopted in the international and European Union framework, according to a comparative analysis. [less ▲]

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See detailHow education adapts to meet the requirements?
Billen, Roland ULg

Scientific conference (2015, September 17)

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See detailUnderground Pumped Storage Hydroelectricity (UPSH) using abandoned works
Pujades, Estanislao ULg; Willems, Thibault ULg; Orban, Philippe ULg et al

Poster (2015, September 17)

Underground Pumped Storage Hydroelectricity (UPSH) using abandoned works is an interesting alternative to increase the efficiency of some power plants, which cannot regulate the amount of electricity ... [more ▼]

Underground Pumped Storage Hydroelectricity (UPSH) using abandoned works is an interesting alternative to increase the efficiency of some power plants, which cannot regulate the amount of electricity generated according to the demand. UPSH plants can store (pumping water from an underground to an upper reservoir) or produce energy (releasing water from an upper to an underground reservoir) during the low or high demand periods. Two considerations must be taken into account in order to construct an UPSH plant: 1) the alteration of the natural conditions of aquifers and 2), the efficiency of the plant, which depends on the hydraulic head inside the underground reservoir. Obviously, a detailed numerical model must be necessary to design a plant. However, a screening methodology to apply during the early stages of the design of a UPSH plant in order to reject the most disadvantageous sites in a short period of time would be useful. Groundwater flow impacts caused by UPSH plants are analyzed numerically and the main variables involved in the groundwater evolution are identified. The most noticeable effect consists in an oscillation of the groundwater. The hydraulic head around which groundwater oscillates, the magnitude of the oscillations and the time to achieve a pseudo-steady state (magnitude and head reached during oscillations do not vary anymore with time) depend on the boundaries, the parameters of the aquifer and the characteristics of the underground reservoir. From the numerical study, a screening methodology, which is based on existing analytical procedures (solutions for large diameter wells, methodologies for cyclic pumpings and the image well theory), is proposed to assess the main impacts caused in aquifers by UPSH plants and their efficiency regarding the groundwater evolution inside the reservoir. The procedure can be applied in a relatively short period of time and is useful to select those appropriate sites to construct a UPSH plant. [less ▲]

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See detailHydrogeological assessment of diaphragm walls used to excavate deep shafts associated to tunnels construction
Pujades, Estanislao ULg; Jurado, Anna; Carrera, Jesus et al

Poster (2015, September 17)

Deep shafts are usually required during tunnels construction (for maintenance tasks when tunnel boring machines –TBM- are used) and/or the operation stage of tunnels (emergency exits). Generally, these ... [more ▼]

Deep shafts are usually required during tunnels construction (for maintenance tasks when tunnel boring machines –TBM- are used) and/or the operation stage of tunnels (emergency exits). Generally, these shafts are constructed below the water table and by the cut and cover method. Therefore, impervious diaphragm walls are desired for two main reasons: (1) to reduce risks (stability, inflows, flooding, etc.) and outside impacts (loose of groundwater resource, holes and sinkholes, etc.) during the excavation stage of a shaft and, (2) to avoid leaks and inflows of groundwater during the operation stage once the shaft is finished. Given that defects in diaphragm walls are frequent and can relatively easy be repaired before starting the excavation stage, a useful and new methodology to assess the state of enclosures before excavation is proposed. Its use would allow to reduce impacts on groundwater (construction and operation stages) and costs in case of defects as well as to increase the safety during the construction. The groundwater response regarding different scenarios of diaphragm walls is studied numerically in order to propose a successful procedure to evaluate underground enclosures imperviousness by internal pumping tests. The scenarios consist in circular and square enclosures where the diaphragm walls are assumed as homogeneous (with numerous defects) or heterogeneous (one discrete defect). The homogeneous cases are modeled by considering different effective hydraulic conductivities, while the size and position of the single defect is varied in the simulations of heterogeneous walls. An analysis of diagnostic plots and the comparison between the expected and measured groundwater evolutions inside the enclosure, is proposed to ascertain: (1) if the diaphragm walls can be considered as homogeneous or heterogeneous, (2) the effective hydraulic conductivity of the walls (if they are homogeneous) and, (3) the position of a defect (if they are heterogeneous). [less ▲]

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See detail60 questions étonnantes sur la musique et les réponses qu'y apporte la science
Vanootighem, Valentine ULg

Book published by Mardaga (2015)

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See detailUse of dual carbon-chlorine isotope analysis to identify degradation pathways of 1,1,1-trichloroethane in groundwater
Palau, Jordi; Jamin, Pierre ULg; Badin, Alice et al

Conference (2015, September 17)

The high susceptibility of chlorinated aliphatic hydrocarbons (CAHs) like 1,1,1-trichloroethane (1,1,1-TCA) to be transformed via different competing pathways (biotic and abiotic) complicates the ... [more ▼]

The high susceptibility of chlorinated aliphatic hydrocarbons (CAHs) like 1,1,1-trichloroethane (1,1,1-TCA) to be transformed via different competing pathways (biotic and abiotic) complicates the assessment of their fate in groundwater. This knowledge is necessary to evaluate contaminant degradation and potential formation of toxic intermediates. Identifying pathways is further complicated in sites contaminated by mixed CAHs because some degradation products of 1,1,1-TCA can be formed from different precursors. Here, identification of pathways based solely on substrate-product concentration relationships may lead to ambiguous interpretations. This study investigates, for the first time, dual C−Cl isotope fractionation as a means of identifying and assessing degradation pathways of 1,1,1-TCA in groundwater. Distinctly different dual isotope trends (L = Δδ13C/Δδ37Cl) were observed for 1,1,1-TCA transformation via oxidation with heat-activated persulfate (L = ∞), reduction with zerovalent iron (L = 1.5 ± 0.1), hydrolysis and dehydrohalogenation (HY/DH, L = 0.33 ± 0.04) in laboratory experiments, illustrating the potential of a dual isotope approach. This approach was evaluated in an aerobic aquifer impacted by 1,1,1-TCA and trichloroethylene (TCE) with concentrations of up to 20 mg/L and 3.4 mg/L, respectively. For 1,1,1-TCA, the dual isotope slope determined from field samples (L = 0.6 ± 0.2, r2 = 0.75) was close to the slope observed for HY/DH in the laboratory (L = 0.33 ± 0.04), indicating that HY/DH was the predominant degradation pathway of 1,1,1-TCA in the aquifer. The observed deviation could be explained by a minor contribution of additional degradation processes. This result, along with the little degradation of TCE determined from isotope measurements, confirmed that 1,1,1-TCA was the main source of the 1,1-dichlorethylene (1,1-DCE) detected in the aquifer with concentrations of up to 10 mg/L. This study demonstrates that a dual C-Cl isotope approach can strongly improve the qualitative and quantitative assessment of 1,1,1-TCA degradation processes in the field. [less ▲]

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See detailCarbon dioxide fluxes from a degraded Woodland in West Arica and their responses to main environmental factors
Ago, Expédit Evariste ULg; Serça, Dominique; Agbossou, Euloge Kossi et al

in Carbon Balance and Management (2015), 10

Detailed reference viewed: 18 (0 ULg)