Last 7 days
Bookmark and Share    
Full Text
See detailLe capital et les intérêts
Biquet, Christine ULg

in Biquet, Christine; Beguin, Etienne (Eds.) Le crédit hypothécaire au consommateur : Etat de la question. (2017)

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailGeneration of High-Amylose Rice through CRISPR/Cas9-Mediated Targeted Mutagenesis of Starch Branching Enzymes
Sun, Yongwei ULg; Xia, Lanqin; Francis, Frédéric ULg et al

in Frontiers in Plant Science (2017), 8

Cereals high in amylose content (AC) and resistant starch (RS) offer potential health benefits. Previous studies using chemical mutagenesis or RNA interference have demonstrated that starch branching ... [more ▼]

Cereals high in amylose content (AC) and resistant starch (RS) offer potential health benefits. Previous studies using chemical mutagenesis or RNA interference have demonstrated that starch branching enzyme (SBE) plays a major role in determining the fine structure and physical properties of starch. However, it remains a challenge to control starch branching in commercial lines. Here, we use CRISPR/Cas9 technology to generate targeted mutagenesis in SBEI and SBEIIb in rice. The frequencies of obtained homozygous or bi-allelic mutant lines with indels in SBEI and SBEIIb in T0 generation were from 26.7 to 40%. Mutations in the homozygous T0 lines stably transmitted to the T1 generation and those in the bi-allelic lines segregated in a Mendelian fashion. Transgene-free plants carrying only the frame-shifted mutagenesis were recovered in T1 generation following segregation. Whereas no obvious differences were observed between the sbeI mutants and wild type, sbeII mutants showed higher proportion of long chains presented in debranched amylopectin, significantly increased AC and RS content to as higher as 25.0% and 9.8%, respectively, and thus altered fine structure and nutritional properties of starch. Taken together, our results demonstrated for the first time the feasibility to create high-amylose rice through CRISPR/Cas9-mediated editing of SBEIIb. [less ▲]

Detailed reference viewed: 17 (0 ULg)
Full Text
Peer Reviewed
See detailThe relationship between knee osteoarthritis and incident hypertension: a representative longitudinal study.
Veronese, N.; Stubbs, B.; Smith, T. et al

in Osteoporosis International (2017, March), 28 Suppl 1

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailThe SarcoPhAge study: evolution of sarcopenic subjects after 2 years of follow-up.
Beaudart, Charlotte ULg; Locquet, Médéa ULg; Reginster, Jean-Yves ULg et al

in Osteoporosis International (2017, March), 28 Suppl 1

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailProfile of osteoarthritic patients undergoing total hip and knee arthroplasty.
Neuprez, Audrey ULg; KURTH, William ULg; GILLET, Philippe ULg et al

in Osteoporosis International (2017, March), 28 Suppl 1

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailPrevalence of sarcopenia accoring to 10 different operational definitions of the frailty.
Buckinx, Fanny ULg; Reginster, Jean-Yves ULg; Beaudart, Charlotte ULg et al

in Osteoporosis International (2017, March), 28 Suppl 1

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailBiomarkers of osteoarthritis : practical considerations.
CAVALIER, Etienne ULg; Reginster, Jean-Yves ULg

in Osteoporosis International (2017, March), 28 Suppl 1

Detailed reference viewed: 17 (1 ULg)
Full Text
Peer Reviewed
See detailDaily management of knee osteoarthritis: from the ESCEO algorithm to the CONCEPT study.
Reginster, Jean-Yves ULg

in Osteoporosis International (2017, March), 28 Suppl 1

Detailed reference viewed: 17 (1 ULg)
Full Text
See detailL’agroécologie, vers la concrétisation d’une utopie ?
Bindelle, Jérôme ULg; De Schutter, Olivier; Dufrêne, Marc ULg et al

Article for general public (2017)

L’agroécologie prône une vision plus responsable de l’agriculture, plus respectueuse de la Terre et de l’Homme. Elle trouve une résonance croissante chez nous, tant dans la société que dans le monde ... [more ▼]

L’agroécologie prône une vision plus responsable de l’agriculture, plus respectueuse de la Terre et de l’Homme. Elle trouve une résonance croissante chez nous, tant dans la société que dans le monde agricole. Quels sont les enjeux de l’agriculture de demain auquel tente de répondre ce modèle alternatif ? Comment creuse-t-il son sillon dans notre paysage agricole ? Quels sont les principes, freins et leviers pour sa mise en oeuvre et sa pérennisation ? [less ▲]

Detailed reference viewed: 73 (18 ULg)
Peer Reviewed
See detailMicro-mechanical testing of magnesium based composites reinforced by carbon fibers manufactured by friction stir processing
Simar, Aude; Ryelandt, Sophie; Delannay, Francis et al

Conference (2017, February 28)

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been ... [more ▼]

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been optimized to ensure a good fiber distribution. 3D X-ray tomography reveals that the fibers orient like onion rings. Thermal treatments have allowed to modify the flow stress level of the matrix material. Tensile testing inside the scanning electron microscope have revealed the decohesion at the fiber/matrix interface if the fibers are preferentially oriented perpendicularly to the loading direction. Modelling allows to estimate the stress needed to initiate this decohesion is about 250 MPa, i.e. appearing early in heat treated samples. To compare with different loading conditions, micro-compression and instrumented micro-indentation testing have also been performed. The consequence of the loading path on the decohesion is discussed. [less ▲]

Detailed reference viewed: 26 (2 ULg)
Full Text
Peer Reviewed
See detailShort-Term Local Adaptation of Historical Common Bean (Phaseolus vulgaris L.) Varieties and Implications for In Situ Management of Bean Diversity
Klaedtke, Stephanie ULg; Caproni, Leonardo; Klauck, Julia et al

in International Journal of Molecular Sciences (2017), 18

Recognizing both the stakes of traditional European common bean diversity and the role farmers’ and gardeners’ networks play in maintaining this diversity, the present study examines the role that local ... [more ▼]

Recognizing both the stakes of traditional European common bean diversity and the role farmers’ and gardeners’ networks play in maintaining this diversity, the present study examines the role that local adaptation plays for the management of common bean diversity in situ. To the purpose, four historical bean varieties and one modern control were multiplied on two organic farms for three growing seasons. The fifteen resulting populations, the initial ones and two populations of each variety obtained after the three years of multiplication, were then grown in a common garden. Twenty-two Simple Sequence Repeat (SSR) markers and 13 phenotypic traits were assessed. In total, 68.2% of tested markers were polymorphic and a total of 66 different alleles were identified. FST analysis showed that the genetic composition of two varieties multiplied in different environments changed. At the phenotypic level, differences were observed in flowering date and leaf length. Results indicate that three years of multiplication suffice for local adaptation to occur. The spatial dynamics of genetic and phenotypic bean diversity imply that the maintenance of diversity should be considered at the scale of the network, rather than individual farms and gardens. The microevolution of bean populations within networks of gardens and farms emerges as a research perspective. [less ▲]

Detailed reference viewed: 24 (5 ULg)
Peer Reviewed
See detailOptimized integration of heat storage into district heating networks fed by a biomass CHP plant.
Sartor, Kevin ULg

in Proceedings (2017, February 28)

Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However ... [more ▼]

Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However, as CHP plants are not optimized for electricity production, their operation is profitable only if a sufficient heat demand is available throughout the year. On the other hand, these plants often work for baseline operation and back-up boilers are used to supply the peak demand. To extend the use of the CHP plants and reduce costs, conventional fuel use and emissions, it is proposed to study the feasibility of using additional high temperature heat storage as retrofit of an existing CHP plant. This work is based on a simple and effective methodology that provides accurate estimations of economic, environmental and energetic performances of CHP plants connected to district heating networks. The DHN of the University in Liège (Belgium) is used as an application framework to demonstrate the effectiveness of the selected approach. The potential energy and pollutant emissions savings and resulting energy costs are estimated and the current policy limitations will be discussed. [less ▲]

Detailed reference viewed: 47 (7 ULg)
Full Text
See detailLiens entre mathématiques et jeux
Bair, Jacques ULg

E-print/Working paper (2017)

Le présent travail se compose de plusieurs parties. En premier lieu, nous définissons le concept général de jeu et présentons quelques mathématiciens célèbres, de toutes époques, qui étaient (ou sont ... [more ▼]

Le présent travail se compose de plusieurs parties. En premier lieu, nous définissons le concept général de jeu et présentons quelques mathématiciens célèbres, de toutes époques, qui étaient (ou sont encore) des adeptes de jeux mathématiques. Ensuite, nous établissons une typologie des jeux mathématiques. Une deuxième partie est consacrée à l’intervention des jeux dans l’enseignement des mathématiques. Nous donnons divers avantages des activités ludiques en classe, mais également des objections relatives à leur usage à des fins pédagogiques. Nous nous demandons aussi comment sélectionner un jeu pour des élèves et exhibons des exemples concrets de jeux exploitables en classe. Ce travail se termine par une bibliographie sur le sujet, ainsi que par une annexe composée de diapositives présentées lors d’un exposé réalisé à l’Université du Luxembourg dans le cadre de la Formation Pédagogique (FOPED) : nous y décrivons brièvement différentes épreuves ludiques proposées ces dernières années à des élèves de l’enseignement secondaire en France, Belgique et au Luxembourg. [less ▲]

Detailed reference viewed: 55 (0 ULg)
Full Text
Peer Reviewed
See detailRevisiting global fossil fuel and biofuel emissions of ethane
Tzompa-Sosa, Z. A.; Mahieu, Emmanuel ULg; Franco, Bruno ULg et al

in Journal of Geophysical Research. Atmospheres (2017), 122(4), 2493--2512

Recent measurements over the Northern Hemisphere indicate that the long-term decline in the atmospheric burden of ethane (C2H6) has ended and the abundance increased dramatically between 2010 and 2014 ... [more ▼]

Recent measurements over the Northern Hemisphere indicate that the long-term decline in the atmospheric burden of ethane (C2H6) has ended and the abundance increased dramatically between 2010 and 2014. The rise in C2H6 atmospheric abundances has been attributed to oil and natural gas extraction in North America. Existing global C2H6 emission inventories are based on outdated activity maps that do not account for current oil and natural gas exploitation regions. We present an updated global C2H6 emission inventory based on 2010 satellite-derived CH4 fluxes with adjusted C2H6 emissions over the U.S. from the National Emission Inventory (NEI 2011). We contrast our global 2010 C2H6 emission inventory with one developed for 2001. The C2H6 difference between global anthropogenic emissions is subtle (7.9 versus 7.2 Tg yr−1), but the spatial distribution of the emissions is distinct. In the 2010 C2H6 inventory, fossil fuel sources in the Northern Hemisphere represent half of global C2H6 emissions and 95% of global fossil fuel emissions. Over the U.S., unadjusted NEI 2011 C2H6 emissions produce mixing ratios that are 14–50% of those observed by aircraft observations (2008–2014). When the NEI 2011 C2H6 emission totals are scaled by a factor of 1.4, the Goddard Earth Observing System Chem model largely reproduces a regional suite of observations, with the exception of the central U.S., where it continues to underpredict observed mixing ratios in the lower troposphere. We estimate monthly mean contributions of fossil fuel C2H6 emissions to ozone and peroxyacetyl nitrate surface mixing ratios over North America of ~1% and ~8%, respectively. [less ▲]

Detailed reference viewed: 16 (2 ULg)
Full Text
See detailCarbon dioxide evasion from the Seine River: Drivers analysis and spatiotemporal reconstruction
Marescaux, A; Thieu, v; Borges, Alberto ULg et al

Conference (2017, February 26)

Detailed reference viewed: 7 (1 ULg)
Peer Reviewed
See detailThermal comfort models for net zero energy buildings in hot climates
Belkhouane, Hamza ULg; Hensen, Jan; Attia, Shady ULg

in Second International Conference on Energy and Indoor Environment for Hot Climates (2017, February 26)

Several energy efficiency concepts and comfort models emerged in the last 15 years seeking high performance buildings and optimal occupant comfort conditions. The aim of high performance buildings is to ... [more ▼]

Several energy efficiency concepts and comfort models emerged in the last 15 years seeking high performance buildings and optimal occupant comfort conditions. The aim of high performance buildings is to reduce the carbon footprint and energy consumption of buildings while maintain a fit to purpose comfort. In this context, this work raises the question of fir to purpose comfort models that can from one side reduce the energy consumption of typical office buildings in hot climates (cooling dominated) while on the other side ensuring indoor thermal comfort. Indeed, studies that address energy efficiency are many, however it is in most cases applied to temperate or cold climates and barely explored for hot climates. The objective of this paper is to (1) combine several comfort models for a net zero energy building in hot climates, (2) select the comfort model that shows the optimal comfort quality of indoor environment and (3) compare the building's annual energy consumption for each used comfort model. To respond to our research problems, a methodology has been established, which goes through several phases. First identifying the different comfort models comfortable to use in hot climates (ISO 7730 / EN 15251 / adaptive ASHRAE / Givoni), secondly selecting a typical validated office building model as a reference building and finally selecting representative cities in the Mediterranean arid and hot climate (Algiers / Sicily / Cairo / Dubai). The study used building performance simulation to generate the different results on the energy consumption and the operative temperatures of the different models of comfort in each city. The paper ultimately identifies the fit to purpose comfort models for a medium size net zero energy office building in hot climates. The paper presents a comparison that can help building professional to identify the most appropriate comfort model that allows optimizing energy consumption, ensuring thermal comfort for robust perfromnce of net zero energy buildings in hot climates. [less ▲]

Detailed reference viewed: 130 (5 ULg)
See detailI Am Very Sorry Sir! Breaking Bad News to Customers
Delcourt, Cécile ULg; Gremler, Dwayne; Greer, Dominique

Scientific conference (2017, February 25)

Detailed reference viewed: 31 (2 ULg)