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See detail“Dare to save a life at school”: implementation of a basic life support cycle in the PE curriculum
Mouton, Alexandre ULg; Laurent, Charlotte; Collin, Manon ULg et al

Conference (2016, June 10)

Introduction In Europe, about 400,000 people have a sudden cardiac arrest every year, with a survival rate of 5-10% (ERC, 2015). Bystander cardiopulmonary resuscitation (CPR) could increase this survival ... [more ▼]

Introduction In Europe, about 400,000 people have a sudden cardiac arrest every year, with a survival rate of 5-10% (ERC, 2015). Bystander cardiopulmonary resuscitation (CPR) could increase this survival rate by 2-3 times. Unfortunately, less than 20% of the general population is able to perform it effectively (Plant & Taylor, 2013). Besides, most of the public facilities are now equipped with automated external defibrillators (AEDs). In a physical literacy perspective (Whitehead, 2013), PE teachers are ideally placed to teach basic life support (BLS) to their students (Colquhoun, 2012). Methods In this pilot study, a female PE teacher was trained to a BLS cycle adapted to the PE curriculum. The BLS cycle, including 6 sessions of PE, was developed in a participatory approach by a team of BLS specialists, PE teacher educators and by the PE teacher herself. During this BLS cycle, students learned the CPR & AED protocols, taught by different teaching styles (practice, reciprocal, self-check) with hands-on application on training manikin and AED. A process analysis was performed from the video recording of the sessions and from satisfactory questionnaires. Students’ knowledge of the BLS protocol was assessed by a 14 open-ended questionnaire at baseline (T0) and after the intervention (T1). Practical application of the BLS protocol was assessed on a manikin measuring CPR performance at T1. Results and conclusions The BLS program was taught to two classes of high school female students (n=52), aged 17.1 ± 0.3 years. At T0, if students were mostly aware of the emergency number (71.4%), very few were able to localise the chest compression (14.3%) and AEDs’ electrodes (2%) areas. Most of them did not feel able to perform BLS (89.8%) and would agree to learn it during PE lessons (97.9%). Results at T1 are expected to highlight improvements of the theoretical and practical BLS’ competencies of the students. [less ▲]

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See detailDariah BE. Les contributions in kind de la Fédération Wallonie-Bruxelles
Dozo, Björn-Olav ULg; Bertrand, Paul

Scientific conference (2014, November 13)

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See detailDARIAH-BE: Towards an ecosystem of Digital Humanities Research Centres in Belgium
Chambers, Sally; Deroo, Katrien; Dozo, Björn-Olav ULg et al

Conference (2016, December 08)

Digital Humanities is flourishing in Belgium. There are Virtual Research Environments (VRE) for studying transnational intellectual collaborations in the area of social reform and the political and social ... [more ▼]

Digital Humanities is flourishing in Belgium. There are Virtual Research Environments (VRE) for studying transnational intellectual collaborations in the area of social reform and the political and social history of the Belgian justice system. Tools being developed to digitally uncover the genetics of manuscripts or create a linked data structure to map networks across the ancient world. Furthermore, Electronic Literature across Europe is being mapped and video games are being studied using humanities research methods. The digitisation of artistic, historic and scientific collections is also a key priority in Belgium. With the Belgian Art Links and Tools platform, BALaT, the development of a Data Hub for Museums and Belgium’s digitised newspapers in Belgica Press being flagship examples. Alongside this rich tapestry of activities, Belgium is a Founding Member of DARIAH-EU, the Digital Research Infrastructure for the Arts and Humanities. The aim of DARIAH in Belgium is to develop and offer a sustainable portfolio of services enabling digital scholarship in the arts and humanities in Belgium and beyond. To realise this, partner institutions within Belgium are in the process of establishing Digital Humanities Research Centres which together will form a humanities-specific digital ecosystem, offering services both within their own institutions and to other institutions in Belgium. Additionally, selected services will be scaled-up for use within the European DARIAH community, and offered as in-kind contributions to DARIAH-EU. In this paper we will explore both the intra- and inter-institutional context of digital humanities centres in Belgium. Starting at the intra-institutional level, we will introduce two existing digital humanities research centres: the Centre Informatique de Philosophie et Lettres (CIPL, Université de Liège) in the French-speaking part of Belgium and the Ghent Centre for Digital Humanities (GhentCDH, Ghent University) in the Dutch-speaking part of Belgium. We will examine both the organisational goals of these centres and how they support digital humanities research within the university, with a particular focus on the collaborations they set up on an institutional level (for example with IT services and the library as well as between research groups). Furthermore, we compare these existing centres, with the newest digital humanities centre in Belgium, the Leuven Centre for Digital Humanities (LCDH) which is currently in the process of being established in the Dutch-speaking university and DARIAH partner institution, KU Leuven. Finally, we will analyse the opportunities and challenges in the inter-institutional context. While challenges such as the complex funding landscape and multilingual research environment should not be underestimated, there are many opportunities that can be celebrated. For example, collaborative training initiatives, such as Research Community Digital Humanities Flanders, which is open to members beyond Flanders, the annual DH Benelux conference which offers a platform for collaboration between digital humanities projects in Belgium, the Netherlands and Luxembourg and joint-funding opportunities such as the Belgian Research Action through Interdisciplinary Networks (BRAIN) programme. Additionally, activities for participation in DARIAH-EU, including preparing Belgian in-kind contributions and establishing DARIAH Working Groups not only addresses these challenges, but contributes to ensuring that digital humanities activities in Belgium thrive. [less ▲]

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See detailDark anti atoms can explain DAMA
Wallemacq, Quentin ULg; Cudell, Jean-René ULg

in Journal of Cosmology and Astroparticle Physics (2015)

We show that the existence of a sub-dominant form of dark matter, made of dark 'antiatoms' of a mass of 1 TeV and a size of 30 fm, can explain the results of direct detection experiments, with a positive ... [more ▼]

We show that the existence of a sub-dominant form of dark matter, made of dark 'antiatoms' of a mass of 1 TeV and a size of 30 fm, can explain the results of direct detection experiments, with a positive signal in DAMA/NaI and DAMA/LIBRA and no signal in other experiments. The signal comes from the binding of the dark anti-atoms to thallium, a dopant in DAMA, and is not present for the constituent atoms of other experiments. The dark anti-atoms are made of two particles oppositely charged under a dark U(1) symmetry and can bind to terrestrial atoms because of a kinetic mixing between the photon and the massless dark photon, such that the dark particles acquire an electric milli-charge of ± 5.10(−)(4)e. This millicharge enables them to bind to high-Z atoms via radiative capture, after they thermalize in terrestrial matter through elastic collisions. [less ▲]

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See detailDark anti-atoms
Wallemacq, Quentin ULg

Conference (2014, November 19)

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See detailDark anti-atoms
Wallemacq, Quentin ULg

Conference (2015, May 13)

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See detailDark atoms : properties and observational consequences
Wallemacq, Quentin ULg

Master's dissertation (2011)

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See detailDark Atoms and Dark Radiation
Khlopov, Maxim; Belotsky, Konstantin; Cudell, Jean-René ULg et al

Book published by Hindawi Publishing Corporation (2014)

We have invited investigators to contribute original research and review articles that seek to define the possible physical nature of composite dark matter and its constituents, to stimulate the ... [more ▼]

We have invited investigators to contribute original research and review articles that seek to define the possible physical nature of composite dark matter and its constituents, to stimulate the experimental searches and to suggest astrophysical tests for their effects. The collected papers in this special issue represent only a first small step in the approach to the thorough investigation of the topic of dark atoms and dark radiation, demonstrating the wide but far from complete variety of possible aspects of this problem. [less ▲]

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See detailDark atoms and the positron-annihilation-line excess in the galactic bulge
Cudell, Jean-René ULg; Khlopov, Maxim; Wallemacq, Quentin ULg

in Advances in High Energy Physics (2014), 2014

It was recently proposed that stable particles of charge -2, O^{--}, can exist and constitute dark matter after they bind with primordial helium in O-helium (OHe) atoms. We study here in details the ... [more ▼]

It was recently proposed that stable particles of charge -2, O^{--}, can exist and constitute dark matter after they bind with primordial helium in O-helium (OHe) atoms. We study here in details the possibility that this model provides an explanation for the excess of gamma radiation in the positron-annihilation line from the galactic bulge observed by INTEGRAL. This explanation assumes that OHe, excited to a 2s state through collisions in the central part of the Galaxy, de-excites to its ground state via an E0 transition, emitting an electron-positron pair. The cross section for OHe collisions with excitation to 2s level is calculated and it is shown that the rate of such excitations in the galactic bulge strongly depends not only on the mass of O-helium, which is determined by the mass of O^{--}, but also on the density and velocity distribution of dark matter. Given the astrophysical uncertainties on these distributions, this mechanism constrains the O^{--} mass to lie in two possible regions. One of these is reachable in the experimental searches for stable multicharged particles at the LHC. [less ▲]

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See detailDark atoms with nuclear shell: a status review
Cudell, Jean-René ULg; Khlopov, Maxim

in International Journal of Modern Physics D : Gravitation, Astrophysics & Cosmology (2015), D24(13), 1545007

Among dark atom scenarios, the simplest and most predictive one is that of O-helium (OHe) dark atoms, in which a lepton-like doubly charged particle O$^{--}$ is bound to a primordial helium nucleus, and ... [more ▼]

Among dark atom scenarios, the simplest and most predictive one is that of O-helium (OHe) dark atoms, in which a lepton-like doubly charged particle O$^{--}$ is bound to a primordial helium nucleus, and is the main constituent of dark matter. The OHe cosmology has several successes: it leads to a Warmer-than-Cold-dark-matter scenario for Large-Scale-Structure formation, it can provide an explanation for the excess in positron annihilation line in the galactic bulge and it may explain the results of direct dark-matter searches. This model liberates the physics of dark atoms from many unknown features of new physics, but it is still not free from astrophysical uncertainties. It also demands a deeper understanding of the details of known nuclear and atomic physics, which are still somewhat unclear in the case of nuclear interacting ``atomic'' shells. These potential problems of the O-helium scenario are also discussed. [less ▲]

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See detailDark matter and LHC phenomenology in a left-right supersymmetric model
Esteves, J. N.; Romao, J. C.; M., Hirsch et al

in Journal of High Energy Physics [=JHEP] (2012), 1201

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See detailThe dark matter content of galaxies probed with gravitational lensing
Sluse, Dominique ULg

Conference (2014, January 30)

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See detailDark Matter in a SUSY Left-Right Model
Vicente, Avelino ULg

in Journal of Physics: Conference Series (2012), 375

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See detailDark matter in a SUSY left-right theory
Vicente, Avelino ULg

Poster (2011)

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See detailDark matter, édité -- J. Audouze et J. Tran Thanh Van
Manfroid, Jean ULg

in Ciel et Terre (1989), 105

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See detailThe Dark Side of Customer Participation: The Antecedents of Customer Participation Stress
Treger, Stephanie; Büttgen, Marion; Schumann, Jan Hendrik et al

Conference (2016, May)

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See detailThe dark side of the black caiman: spatial and temporal trophic niche variations
Caut, Stéphane; Bacques, Mathieu; François, Vincent et al

Poster (2016, April 05)

A floating scientific platform was built in the Kaw marshes (French Guiana) to study this unique and still unknown ecosystem. Preliminary research has shown this pond is seasonally colonized by a large ... [more ▼]

A floating scientific platform was built in the Kaw marshes (French Guiana) to study this unique and still unknown ecosystem. Preliminary research has shown this pond is seasonally colonized by a large population of black caimans and represents the most important breeding site for many rare bird species. At the top of the food web, the black caiman is the largest neotropical predator and a particularly threatened crocodilian species, which implies that they have a major structuring role within the swamp ecosystem. Our preliminary study during the dry and wet season revealed important seasonal variations in the structure of the Agami pond population and the temporal presence of large caimans during the wet season (rarely observed in the Kaw marshes). Thus, coupling isotopic analysis (controlled diet and field studies) and different monitoring approaches (behavioral, microchip marking and satellite Argos tracking), we aim to conduct a detailed study of the Agami pond black caiman population: (i) to study the structure of the population and its variation over time, (ii) to estimate the intra- and inter-annual movements of individual caimans and identify potential feeding, reproductive and nesting areas in the Kaw marsh and (iii) to estimate this top predator’s role on the marsh’s ecological functioning and survival throughout the year. For this purpose, we will compare different field periods during the wet and dry seasons characterized by different hydrological and ecological patterns. This new information will help predict species response to disturbance, which is a prerequisite to effective conservation plan management involving local people and wildlife administrations. Finally, by coupling Argos tracking and stable isotopes, we will collect significant and valuable data for future applications at a global scale. [less ▲]

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See detailDark Vador
Dozo, Björn-Olav ULg

Conference given outside the academic context (2015)

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See detailThe darkening of the Greenland ice sheet: trends, drivers, and projections (1981–2100)
Tedesco, M.; Doherty, S.; Fettweis, Xavier ULg et al

in Cryosphere (The) (2016), 10

The surface energy balance and meltwater production of the Greenland ice sheet (GrIS) are modulated by snow and ice albedo through the amount of absorbed solar radiation. Here we show, using space-borne ... [more ▼]

The surface energy balance and meltwater production of the Greenland ice sheet (GrIS) are modulated by snow and ice albedo through the amount of absorbed solar radiation. Here we show, using space-borne multispectral data collected during the 3 decades from 1981 to 2012, that summertime surface albedo over the GrIS decreased at a statistically significant (99 %) rate of 0.02 decade−1 between 1996 and 2012. Over the same period, albedo modelled by the Modèle Atmosphérique Régionale (MAR) also shows a decrease, though at a lower rate ( ∼ −0.01 decade−1) than that obtained from space-borne data. We suggest that the discrepancy between modelled and measured albedo trends can be explained by the absence in the model of processes associated with the presence of light-absorbing impurities. The negative trend in observed albedo is confined to the regions of the GrIS that undergo melting in summer, with the dry-snow zone showing no trend. The period 1981–1996 also showed no statistically significant trend over the whole GrIS. Analysis of MAR outputs indicates that the observed albedo decrease is attributable to the combined effects of increased near-surface air temperatures, which enhanced melt and promoted growth in snow grain size and the expansion of bare ice areas, and to trends in light-absorbing impurities (LAI) on the snow and ice surfaces. Neither aerosol models nor in situ and remote sensing observations indicate increasing trends in LAI in the atmosphere over Greenland. Similarly, an analysis of the number of fires and BC emissions from fires points to the absence of trends for such quantities. This suggests that the apparent increase of LAI in snow and ice might be related to the exposure of a "dark band" of dirty ice and to increased consolidation of LAI at the surface with melt, not to increased aerosol deposition. Albedo projections through to the end of the century under different warming scenarios consistently point to continued darkening, with albedo anomalies averaged over the whole ice sheet lower by 0.08 in 2100 than in 2000, driven solely by a warming climate. Future darkening is likely underestimated because of known underestimates in modelled melting (as seen in hindcasts) and because the model albedo scheme does not currently include the effects of LAI, which have a positive feedback on albedo decline through increased melting, grain growth, and darkening. [less ▲]

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See detailDarkness improves growth and delays necrosis in a nonchlorophyllous habituated sugarbeet callus: Biochemical changes
Kevers, Claire ULg; Bisbis, B.; Le Dily, F. et al

in In Vitro Cellular & Developmental Biology - Plant (1995), 31(2), 122-126

The transfer of light-cultured green normal (N) and white habituated (HNO) sugarbeet callus to darkness reduced the growth of N callus and improved growth and delayed necrosis in the HNO callus. The ... [more ▼]

The transfer of light-cultured green normal (N) and white habituated (HNO) sugarbeet callus to darkness reduced the growth of N callus and improved growth and delayed necrosis in the HNO callus. The decrease of dry matter of N callus under darkness was accompanied by a reduced content of carotenoids and by decreased CO2 fixation, which was compensated by an increased dependency on externally supplied sucrose. The levels of some organic nitrogen compounds such as glutamate, proline, and free polyamines were not affected by transfer to darkness of N or HNO callus. Darkness decreased ethylene emissions in both callus types. In the HNO callus, the sucrose growth dependency and the CO2 fixation were unaffected by darkness. Chlorophylls were absent both in light and darkness, whereas some carotenoids were accumulated in the HNO callus only in dark conditions. In another connection, a significant increase of peroxidase activity, which did not occur in the N callus, was induced by darkness in the HNO callus. A decreased content of thio-barbituric acid (TBA)-reactive substances was measured in the HNO callus transferred to darkness, whereas an increase was noticed in the N callus placed in the same conditions. These metabolic changes and the reduction of cellular damage in darkness revealed light-induced stress reactions leading to necrosis and to reduced growth of HNO callus. It appeared that darkness allowed the HNO callus to avoid the photooxidation stress. Therefore, the favorable effect of darkness on HNO growth might be explained by the suppression of photooxidative damage due to the absence of carotenoids. The higher peroxidase activity in the HNO callus maintained in darkness raised the problem of heme synthesis in this heterotrophic callus. © 1995 Society for In Vitro Biology. [less ▲]

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