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See detailThe FLC-dependent vernalization pathway in Sinapis alba.
D'Aloia, Maria ULg; Tocquin, Pierre ULg; Périlleux, Claire ULg

in Comparative Biochemistry and Physiology. Part A, Physiology (2006), 143A

In many plants, flowering is promoted by a long exposure to cold, a process known as ‘vernalisation’. In Arabidopsis, the vernalisation pathway was shown to promote flowering via the repression of the ... [more ▼]

In many plants, flowering is promoted by a long exposure to cold, a process known as ‘vernalisation’. In Arabidopsis, the vernalisation pathway was shown to promote flowering via the repression of the FLOWERING LOCUS C (FLC) gene, which encodes a repressor of flowering. As far as we know, the genetical control of flowering is conserved among Brassicaceae, and we reported elsewhere cloning of flowering times genes of the photoperiodic pathway in Sinapis alba, based on sequence similarity with Arabidopsis. However, little is known about vernalisation in Sinapis. We therefore undertook a physiological and molecular study of this process. Plants of Sinapis were grown in non inductive short days and vernalised at 7°C, at the seedling stage. Vernalisation was found to accelerate flowering and an increasing effect was observed for vernalisation treatments longer than 2 weeks. We cloned an FLC-like sequence (SaFLC) by screening a cDNA library, and used it as a probe to perform expression analyses. We observed that SaFLC was almost completely repressed after 1 week of vernalisation, but repression was stable only after 2 weeks, which is consistent with the fact that 2-week is the minimal duration of vernalisation that promotes flowering. Hence the molecular mechanisms of vernalisation seem to be conserved in Sinapis and Arabidopsis. [less ▲]

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See detailRelationship between the progress of the foliar pathogens caused by Septoria tritici and the reduction of the photosynthetic vitality of plants in Grand-Duchy of Luxembourg in 2004.
El Jarroudi, Moussa ULg; Crumière, F.; Hausman, J.-F. et al

in Bibliotheca fragmenta agronomica - Book of proceedings (2006), 11(2), 643-644

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See detail"La Piazza” –Convivial spaces for inter-generational learning: Which role can learning technologies play
Barajas, Mario; Magli, Rossella; Owen, Martin et al

in Solano Martín, A.; Mesa González, J.; Mesa González, J. A. (Eds.) et al Current Developments in Technology-Assisted Education. Vol. 3. (2006)

This paper presents the approach of La Piazza project, a study conducted in the framework of the Kaleidoscope Network of Excellence (IST-Technology Enhanced Learning), focusing ICT and intergenera- tional ... [more ▼]

This paper presents the approach of La Piazza project, a study conducted in the framework of the Kaleidoscope Network of Excellence (IST-Technology Enhanced Learning), focusing ICT and intergenera- tional learning in public spaces (museums, community centres, civic networks, installations in public squares). It discusses the notion of Communication underpinning its theoretical foundations, illustrates the research methodologies and the emerging themes, that are further developed in the paper by Ackermann et al., also presented at ICTE06. [less ▲]

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See detailEffect Of The Antibiotic Azithromycin On Thermotropic Behavior Of Dopc Or Dppc Bilayers
Fa, N.; Ronkart, Sébastien ULg; Schanck, A. et al

in Chemistry and Physics of Lipids (2006), 144(1),

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See detailEffect of the entrained air and initial droplet velocity on the release height parameter of a Gaussian spray drift model.
Stainier, C.; Destain, Marie-France ULg; Schiffers, Bruno ULg et al

in Communications in Agricultural and Applied Biological Sciences (2006), 71(2 Pt A),

The increased concern about environmental effect of off-target deposits of pesticides use has resulted in the development of numerous spray drift models. Statistical models based on experimental field ... [more ▼]

The increased concern about environmental effect of off-target deposits of pesticides use has resulted in the development of numerous spray drift models. Statistical models based on experimental field studies are used to estimate off-target deposits for different sprayers in various environmental conditions. Random-walk and computational fluid dynamics (CFD) models have been used to predict the effect of operational parameters and were extensively validated in wind tunnel. A third group, Gaussian dispersion models have been used for several years for the environmental assessment of the pesticide spray drift, mainly for aerial application. When these models were used for the evaluation of boom sprayer spray drift, their predictions were found unreliable in the short range, were the initial release conditions of the droplets have a significant effect on the spray deposits. For longer ranges, the results were found consistent with the field measurements as the characteristics of the source have a reduced influence on the small droplets drift. Three major parameters must be taken into account in order to define realistic initial conditions of the droplets in a spray drift model: the spray pattern of the nozzle, the boom movements and the effect of entrained air and droplet velocities. To take theses parameters into account in a Gaussian model, the nozzle droplet size distribution measured with a Malvern laser particle analyser was used to divide the nozzle output into several size classes. The spray deposits of each diameter class was computed for each successive position of the nozzle combining the nozzle spray distribution with drift computed with a Gaussian tilting plume model. The summation of these footprints resulted in the global drift of the nozzle. For increasing droplet size, the release height used in the Gaussian model was decreased from nozzle height to ground level using an experimental law to take into account the effect of entrained air and droplet initial velocity. The experimental law was adjusted on 2m/s wind tunnel measurements and robustness was evaluated for 1 and 4 m/s. [less ▲]

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See detailEvolution of a dozen non-CO2 greenhouse gases above Central Europe since the mid-1980s.
Zander, Rodolphe ULg; Mahieu, Emmanuel ULg; Demoulin, Philippe ULg et al

in Proceedings of the 4th International Symposium on Non-CO2 Greenhouse Gases (2006)

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See detailFlexural response of heterogeneous structures using computational homogenisation
Mercatoris, Benoît ULg; Massart, Thierry J.

in 8th International Conference on Computational Structures Technology (CST2006) (2006)

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See detailCompromis, pluralisme et régulation (chapitre introductif)
Nachi, Mohamed ULg

in Nachi, Mohamed (Ed.) Eloge du compromis. Pour une nouvelle pratique démocratique (2006)

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See detailGuide pratique sur la gestion des déchets ménagers et des sites d'enfouissement technique dans les pays du Sud
Hiligsmann, Serge ULg; Lardinois, M.; Diabate, S. I. et al

Book published by Institut de l'Energie et de l'Environnement de la Francophonie (IEPF) (2006)

This book describes the general guidelines for waste and landfill management, especially for developing countries. It contains four chapters. Ch. 1 describes waste management in developing countries ... [more ▼]

This book describes the general guidelines for waste and landfill management, especially for developing countries. It contains four chapters. Ch. 1 describes waste management in developing countries (waste composition, production and harvesting modes; landfills characteristics; valorisation). Ch. 2 describes environmental aspects of waste management (biodegradation phenomenons; bioreactor-like landfill management; environmental impacts; investigation of biological activity of landfill in developing countries). Ch. 3 describes the general guidelines for controlled landfill (investigations for site location; landfill construction under wet and dry climates; landfill management and monitoring; financial aspects). Ch. 4 synthesizes the social and economical aspects of waste and landfill management and describes some best practices for harvesting, valorisation, and disposal of MSW) [less ▲]

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See detailHallucinations and delusions in children and adolescents
Laroi, Frank ULg; Van der Linden, Martial ULg; Goëb, Jean-Louis

in Current Psychiatry Reviews (2006), 2

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See detailAuroral oval equatorward boundary during strong magnetic storms
Bojanowska, M.; Hubert, Benoît ULg; Nowakowski, R.

in 36th COSPAR Scientific Assembly (2006)

Data has been collected for selected strong magnetic storms during which auroras were seen from ground at middle- and low-latitudes as reported by amateur observers all over the world Auroral reports from ... [more ▼]

Data has been collected for selected strong magnetic storms during which auroras were seen from ground at middle- and low-latitudes as reported by amateur observers all over the world Auroral reports from ground were compared with auroral images from space Timed Image Polar and in situ measurements of plasma and magnetic electric fields in the disturbed inner magnetosphere A new version of the Weimer2005 electric potential model gives the boundary that defines the low-latitude edge of both the convection electric field and the magnetic perturbation due to the field-aligned currents We tried to find out whether it is possible to predict auroral oval position during strong magnetic storms using this improved ionospheric electrodynamic model A quite good compatibility between FAC pattern and oval position has been found This suggests that during strong magnetic storm Weimer2005 FAC model may be used to predict equatorward boundary of the auroral oval We also compared the observed low-latitude oval boundaries with projections of Alfven layer for plasma sheet electrons Particle trajectories were traced using T04 s magnetic field model and Weimer 2005 electric field model for given solar wind conditions Results will be discussed [less ▲]

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See detailWhat did we recently learned on and from equine Doppler echocardiography ?
Amory, Hélène ULg; Pirard, L; Sandersen, Charlotte ULg

in Proceedings of the Resident Meeting of the European College of Equine Internal medicine (ECEIM) (2006)

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See detailEvaluation des retombées économiques du circuit de Spa-Francorchamps
Gathon, Henry-Jean ULg; Bebermans, Olivier; Delcour, Catherine et al

Report (2006)

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See detailOne-year follow-up of ankle-brachial blood pressure index in hemodialysis patients
Saint-Remy, Annie ULg; Sumaili, E.; Krzesinski, Jean-Marie ULg

in Kidney & Blood Pressure Research (2006), 29

Baseline Ankle-Brachial Blood Pressure Index (ABI base) was measured in 85 chronic hemodialysis (HD) patients in 2005, giving a 41% prevalence of peripheral arterial disease (ABI < 0.9). The index was ... [more ▼]

Baseline Ankle-Brachial Blood Pressure Index (ABI base) was measured in 85 chronic hemodialysis (HD) patients in 2005, giving a 41% prevalence of peripheral arterial disease (ABI < 0.9). The index was measured 1 year later (ABI 1 year) in 69 BD for whom both screening values were available. The evolution of ABI, 1 year apart, was analyzed in relation to major other cardiovascular (CV) risk factors such as hypertension (lIT), pulse pressure (PP), pulse wave velocity (PWV), phosphocalcic metabolism, and lipids. [less ▲]

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See detailAnalysis By Gc/Fid And Gc/Ms Of Essential Oil Of Leaflets Of Steganotaenia Araliacea Hochst From Cameroon
Noudjou, Félicité; Ngassoum, Martin B.; Mapongmetsem, Pierre M. et al

in Journal of Essential Oil Research (2006), 18(3), 305-307

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See detailLipid raft targeting of hematopoietic protein tyrosine phosphatase by protein kinase C theta-mediated phosphorylation.
Nika, Konstantina; Charvet, Celine; Williams, Scott et al

in Molecular & Cellular Biology (2006), 26(5), 1806-16

Protein kinase C theta (PKC theta) is unique among PKC isozymes in its translocation to the center of the immune synapse in T cells and its unique downstream signaling. Here we show that the hematopoietic ... [more ▼]

Protein kinase C theta (PKC theta) is unique among PKC isozymes in its translocation to the center of the immune synapse in T cells and its unique downstream signaling. Here we show that the hematopoietic protein tyrosine phosphatase (HePTP) also accumulates in the immune synapse in a PKC theta-dependent manner upon antigen recognition by T cells and is phosphorylated by PKC theta at Ser-225, which is required for lipid raft translocation. Immune synapse translocation was completely absent in antigen-specific T cells from PKC theta-/- mice. In intact T cells, HePTP-S225A enhanced T-cell receptor (TCR)-induced NFAT/AP-1 transactivation, while the acidic substitution mutant was as efficient as wild-type HePTP. We conclude that HePTP is phosphorylated in the immune synapse by PKC theta and thereby targeted to lipid rafts to temper TCR signaling. This represents a novel mechanism for the active immune synapse recruitment and activation of a phosphatase in TCR signaling. [less ▲]

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