References of "2009"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailAnalyse expérimentale du fonctionnement hydraulique des déversoirs en touches de piano
Machiels, Olivier ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in Actes du Colloque Dimensionnement et Fonctionnement des Evacuateurs de crues (2009)

Detailed reference viewed: 46 (2 ULg)
Full Text
Peer Reviewed
See detailAdvances in quality control for dioxins monitoring and evaluation of measurement uncertainty from quality control data.
Eppe, Gauthier ULg; De Pauw, Edwin ULg

in Journal of Chromatography. B : Analytical Technologies in the Biomedical & Life Sciences (2009), 877

This paper describes an application of multivariate and multilevel quality control charts with the aim of improving the internal quality control (IQC) procedures for the monitoring of dioxins and dioxin ... [more ▼]

This paper describes an application of multivariate and multilevel quality control charts with the aim of improving the internal quality control (IQC) procedures for the monitoring of dioxins and dioxin-like PCBs analysis in food. Dioxin analysts have to use the toxic equivalent concept (TEQ) to assess the toxicity potential of a mixture of dioxin-like compounds. The TEQ approach requires quantifying individually 29 dioxin-like compounds. Monitoring the congeners separately on univariate QC charts is misleading owing to the increase of false alarm rate. We propose to subdivide the TEQ value into 3 sub-groups and to control simultaneously the 3 variables in a T(2) chart. When a T(2) exceeds the upper control limit, it acts as a warning to trigger additional investigations on individual congeners. We discuss the minimum number of runs required to reliably estimate the QC chart parameters and we suggest using data from multilevel QC charts to properly characterize the standard deviations and the correlation coefficients. Moreover, the univariate QC chart can be sensitised to detect systematic errors by using exponentially weighted moving average (EWMA) technique. The EWMA chart provides an additional guidance on setting appropriate criteria to control the method bias and to support trend analysis. Finally, we present an estimate of measurement uncertainty by computing the accuracy profile in a retrospective way with the QC data generated and we discuss assessment of compliance with regulatory maximum levels. [less ▲]

Detailed reference viewed: 72 (15 ULg)
Full Text
Peer Reviewed
See detailEffects of aggressive encounters on plasma corticosteroid-binding globulin and its ligands in white-crowned sparrows.
Charlier, Thierry ULg; Underhill, Caroline; Hammond, Geoffrey L. et al

in Hormones & Behavior (2009), 56(3), 339-47

In birds, corticosteroid-binding globulin (CBG) binds corticosterone, progesterone and testosterone. The concentration of each ligand can alter the binding of the other ligands through competitive ... [more ▼]

In birds, corticosteroid-binding globulin (CBG) binds corticosterone, progesterone and testosterone. The concentration of each ligand can alter the binding of the other ligands through competitive interactions. Thus, an increase in corticosterone or progesterone may displace testosterone bound to CBG, leading to an increase in bioactive free testosterone levels without affecting total testosterone levels in the circulation. Aggressive interactions increase plasma total testosterone levels in some birds but not in others. Here, we tested the hypothesis that aggressive encounters in the late breeding season would not increase total testosterone levels in plasma, but would alter CBG, total corticosterone or total progesterone levels in such a way as to modify the number of available binding sites and therefore occupancy by testosterone. A marked decrease in CBG occupancy by testosterone would indirectly suggest an increase in free testosterone levels in plasma. Wild male white-crowned sparrows were exposed to a simulated territorial intrusion (STI) or control for 30 min. Subjects were then caught and bled. We measured CBG using a ligand-binding assay and corticosterone, progesterone and testosterone using highly sensitive radioimmunoassays. STI significantly increased aggressive behaviors but did not affect plasma total testosterone levels. STI significantly increased plasma CBG and total corticosterone levels and decreased plasma total progesterone levels. We predict that CBG occupancy by corticosterone will increase slightly following an aggressive encounter. However, this small change is unlikely to increase free testosterone levels, because of the large number of seemingly unoccupied CBG binding sites in these subjects. [less ▲]

Detailed reference viewed: 21 (6 ULg)
Full Text
Peer Reviewed
See detailDevelopment of a practical test of insulin resistance in obese Beagle dogs and effects of sc FOS
Daumas, Caroline; Lhoest, Estelle; Hornick, Jean-Luc ULg et al

in Mussa, P. P.; Nery, J.; Schiavone, A. (Eds.) et al Congress Proceedings 13t h Congress of the ESVCN (2009)

Detailed reference viewed: 26 (0 ULg)
Full Text
See detailTopology Optimization of Structural Components: A Multibody Dynamics-Oriented Approach
Bruls, Olivier ULg; Lemaire, Etienne ULg; Duysinx, Pierre ULg et al

in Proceedings of the Multibody Dynamics ECCOMAS Conference (2009)

This work addresses the topology optimization of structural components embedded in multibody systems with large amplitude motions. Generally, topology optimization techniques consider that the structural ... [more ▼]

This work addresses the topology optimization of structural components embedded in multibody systems with large amplitude motions. Generally, topology optimization techniques consider that the structural component is isolated from the rest of the mechanism and use simplified quasi-static load cases to mimic the complex loadings in service. In contrast, this paper proposes an optimization procedure based on the dynamic simulation of the full multibody system with large amplitude motions and elastic deflections. We show that the simulation model, which involves a nonlinear finite element formulation, a time integration scheme and a sensitivity analysis, can be efficiently exploited in an optimization loop. The method is applied to truss structural components. Each truss is represented by a separate structural universe of beams with a topology design variable attached to each one. A SIMP model (or a variant of the power law) is used to penalize intermediate densities. The optimization formulation is stated as the minimization of the mean compliance over a time period or as the minimization of the mean tip deflection during a given trajectory, subject to a volume constraint. In order to illustrate the benefits of the integrated design approach, the case of a two degrees-of-freedom robot arm is developed. [less ▲]

Detailed reference viewed: 96 (13 ULg)
Full Text
Peer Reviewed
See detailSexual size dimorphism in the evolutionary context of facultative paedomorphosis: insights from European newts
Denoël, Mathieu ULg; Ivanovic, Ana; Dzukic, Georg et al

in BMC Evolutionary Biology (2009), 9

BACKGROUND:Sexual size dimorphism (SSD) is a key evolutionary feature that has been studied in many organisms. In a wide range of species, this pattern is more complex because of polymorphism within each ... [more ▼]

BACKGROUND:Sexual size dimorphism (SSD) is a key evolutionary feature that has been studied in many organisms. In a wide range of species, this pattern is more complex because of polymorphism within each sex. However, it is not known whether the magnitude and direction of SSD could be affected by alternative developmental trajectories within sexes. Our aim was to test whether an intrasexual polymorphism, facultative paedomorphosis (a process in which the development of somatic and gonadal tissues differs in alternative morphs), could affect SSD variation patterns in European newts. RESULTS:We report here the first evidence that SSD varies depending on the paedomorphic or metamorphic ontogenetic pathway. In species with a consistent female-biased SSD, paedomorphosis decreased the SSD level, but did not affect its direction. In species with moderate female-biased SSD or variable SSD patterns, paedomorphosis changed the magnitude, or both the magnitude and the direction, of SSD. CONCLUSIONS:Our study highlights the importance of developmental processes for shaping SSD patterns in populations in which contrasting life-history pathways evolved. European newts express different SSD patterns depending on their developmental pathway (i.e., metamorphosis versus paedomorphosis), as well as their species and population. These findings emphasize the importance of studying alternative morphotypes, which are found in a wide range of animal groups, to understand the evolution of SSD. [less ▲]

Detailed reference viewed: 141 (16 ULg)
Full Text
Peer Reviewed
See detailTranscriptomic and proteomic analyses of seasonal photoperiodism in the pea aphid
LE TRIONNAIRE, G.; Francis, Frédéric ULg; JAUBERT-POSSAMAI, S. et al

in BMC Genomics (2009), 29

Detailed reference viewed: 27 (5 ULg)
Full Text
See detailProviding sustainable long term care: a looming challenge
Cremer, Helmuth; De Donder, Philippe; Pestieau, Pierre ULg

in Toulouse School of Economics (2009), (3),

Long-term care (LTC hereafter) concerns people who depend on help to carry out daily activities. It is mainly delivered informally by families and to a lesser extent formally by professional care ... [more ▼]

Long-term care (LTC hereafter) concerns people who depend on help to carry out daily activities. It is mainly delivered informally by families and to a lesser extent formally by professional care assistants and nursing homes. Most EU governments are also involved in some way in the provision or financing of LTC services. Right now, the future of LTC provision appears to be gloomy, for demographic, societal and financial reasons. This TSE Note studies the strengths and weaknesses of three institutions providing LTC services - namely the family, the State and the private insurance market - and provides policy recommendations based on the view that governments should take the leadership towards a comprehensive approach of the dependency problem, while relying as much as possible on the family and the market. [less ▲]

Detailed reference viewed: 12 (2 ULg)
Full Text
See detailLa neuropathie autonome: une complication méconnue du diabète
Philips, Jean-Christophe ULg; Marchand, Monique; Scheen, André ULg

in Association belge du diabète (2009), 52(1), 24-29

Detailed reference viewed: 41 (2 ULg)
Full Text
Peer Reviewed
See detailCumulate origin and polybaric crystallization of Fe-Ti oxide ores in the Suwalki anorthosite, northeastern Poland
Charlier, Bernard ULg; Namur, Olivier ULg; Duchesne, Jean Clair et al

in Economic Geology (2009), 104

Detailed reference viewed: 33 (3 ULg)
Full Text
Peer Reviewed
See detailFirst-Principles conductance of nanoscale junctions from the polarizability of finite systems
Verstraete, Matthieu ULg; Bokes, Peter; Godby, Rex W

in Journal of Chemical Physics (2009), 130

Detailed reference viewed: 26 (9 ULg)
Full Text
Peer Reviewed
See detailPseudoanevrisme de l'artere gastrique gauche.
Honore, Charles ULg; Bruyere, Pierre-Julien ULg; Maweja, Sylvie ULg et al

in Journal de Chirurgie (2009), 146(4), 413-5

We report the case of a 65-year-old man admitted for an upper-GI hemorrhage. A CT scan performed with vascular reconstructions demonstrated a pseudoaneurysm of the left gastric artery. Proximal vascular ... [more ▼]

We report the case of a 65-year-old man admitted for an upper-GI hemorrhage. A CT scan performed with vascular reconstructions demonstrated a pseudoaneurysm of the left gastric artery. Proximal vascular control of the celiac axis was obtained by balloon occlusion with a Fogarty balloon inserted retrograde via the femoral artery: the pseudoaneurysm was then successfully controlled with direct suture. [less ▲]

Detailed reference viewed: 65 (3 ULg)
Full Text
Peer Reviewed
See detailMonitoring certain endocrine parameters for predicting stillbirth in dairy cows
Szenci, Otto; Bajcsy, A Cs; Brydl, E. et al

in Proceedings: XVII International congress of mediterranean federation of health and production of ruminants (2009)

Detailed reference viewed: 56 (11 ULg)
Full Text
Peer Reviewed
See detailKhảo sát một số chỉ tiêu chất lượng thịt trâu bò
Do Duc, Luc ULg; Thanh, Nguyen Chi; Thinh, Nguyen Hoang et al

in Journal of Science and Development (2009), 7(1), 17-24

A survey was carried out on 13 Vietnamese Yellow cattle, 14 LaiSind cattle and 18 buffalos in Hanoi to estimate the quality of longissimus dorsi in terms of pH, color, drip loss, cooking loss and ... [more ▼]

A survey was carried out on 13 Vietnamese Yellow cattle, 14 LaiSind cattle and 18 buffalos in Hanoi to estimate the quality of longissimus dorsi in terms of pH, color, drip loss, cooking loss and tenderness at 6 different postmortem intervals. It was found that the pH value of longissimus dorsi was not significantly different among the 3 breeds (P>0.05), being reduced rapidly during the first 36 hours postmortem, and then stayed stable. The value was in the range that was considered to be normal. Conversely, the color values L*, a* and b* tended to increase and also stable at 36 hours postmortem, except that for LaiSind cattle at 48 hours. According to L* scale, the meat of Yellow and LaiSind cattle met the normal quality but the buffalo meat was considered to be dark cutters. The tenderness of longissimus dorsi was significantly different among the breeds (P<0.05). The value was highest at 48 hours and then decreased for LaiSind and buffalo, but for Yellow cattle the value decreased continuously after slaughtering In terms of tenderness buffalo meat and Yellow cattle meat were classified as “intermediate”, while LaiSind meat was out of this interval and classified as “tough”. Drip loss ratio was increased with the time of preservation (P<0.05). The cooking loss ratio was lowest at 12 hours and higher at the next period, but there was no significant difference among the periods after 36 hours postmotem. [less ▲]

Detailed reference viewed: 20 (0 ULg)
Full Text
Peer Reviewed
See detailLes défauts d'implantation placentaire et leurs conséquences sur la fonction endothéliale maternelle
Foidart, Jean-Michel ULg; Noël, Agnès ULg; Chantraine, Frédéric ULg et al

in Bulletin Académique National de Médecine (2009), 193(5), 1059-66

Detailed reference viewed: 91 (23 ULg)
Full Text
See detailL'algorithme du simplexe
Bair, Jacques ULg; Henry, Valérie ULg

in Cohen, Gilles (Ed.) Les algorithmes (2009)

Detailed reference viewed: 24 (3 ULg)