Characterization of Nb3Sn Strand for ITER

We have an ongoing research program for characterization of superconductor composite strands, the principal output of which is sensitive measurements of critical current Ic over a broad range of the essential parameters: longitudinal strain ÃÂÃÂÃÂÃÂÃÂÃÂÃÂõ, temperature T, and magnetic field B. This features a new apparatus for integrated measurement of Ic(ÃÂÃÂÃÂÃÂÃÂÃÂÃÂõ,T,B) on the same, long-conductor sample without remounting

Multiobjective Optimization to Optimal Moroccan Diet Using Genetic Algorithm

Proper glucose control is designed to prevent or delay the complications of diabetes. Various contexts can lead to a fluctuation of the blood sugar level to a greater or lesser extent. It can be, for example, eating habits, treatment, intense physical activity, etc. The feeding problem interpolated by a minimum cost function is well-known in the literature. The main goal of this paper is to introduce a multiobjective programming model with constraints for the diet problem with two objective functions, the first of which is the total glycemic load of the diet while the second objective function is the cost of the diet. the MOGA (multiobjective Genetic Algorithm) algorithm was used to resolve the proposed model. The experimental results show that our system ([proposed model – MOGA]) is able to produce adequate diets that can settle glycemic load and cost while respecting the patient\u27s requirements

Recherche d’indicateurs de ruissellement et des risques d’érosion au moyen de tests d’infiltrométrie dans le bassin versant du Rhéraya (Haut-Atlas occidental, Maroc)

L’objectif de ce travail est d’étudier les risques de ruissellement et d’érosion dans le bassin versant du Rhéraya (Haut-Atlas du Maroc) au moyen d’un irrigateur manuel à rampe sur 1 m2. Nous recherchons des indicateurs faciles à déterminer directement sur le terrain (états de surface du sol) ou à partir des tests en laboratoire (stabilité des agrégats, texture, matière organique), qui soient bien corrélés avec l’infiltrabilité et la turbidité issues des tests d’infiltrométrie. Pour les différents sols affleurant dans le bassin, les résultats ont mis en évidence une grande variabilité de l’infiltrabilité (de 1 à 70 mm.h‑1) et de turbidité des eaux de ruissellement (de 1,5 à 325 g.L‑1). La turbidité a pu être mesurée correctement grâce à la mise au point d’un nouveau dispositif de collecte des eaux de ruissellement de l’irrigateur. Bien que l’infiltrabilité et le ruissellement soient la résultante d’interactions entre toutes les caractéristiques physiques du sol, certaines apparaissent dominantes dans notre contexte. Nous montrons ainsi que l’infiltrabilité est déterminée principalement par la texture et l’ouverture de la surface du sol et que la turbidité est due essentiellement à la surface de sol nu exposée au ruissellement. Ces indicateurs cartographiables offrent la possibilité d’une spatialisation des risques d’érosion au niveau du bassin versant.The objective of this study was to investigate the risks of runoff and erosion of soils in the Rheraya catchment (High Atlas, Morocco) using infiltrometer tests on 1 m2 plots. We were looking for indicators that are easily obtained directly from field observations (ground surface features) or by laboratory tests (aggregate stability, soil texture and organic matter), and are well correlated with infiltrability and turbidity measurements from the infiltrometer tests. For the various soils present in the study area, the results show a large variability of infiltrability values (from 1 to 70 mm·h-1) and turbidity (from 1.5 to 325 g·L-1). The turbidity was correctly measured thanks to the development of a new runoff collector that doesn’t disturb the soil. Although runoff and erosion are the result of interactions among many parameters, some of these appear to be dominant in our case. The measurements show that the infiltrability was correlated mainly with texture and soil surface opening, whereas turbidity was related to the surface of bare soil that was exposed to runoff. These indicators may be used to determine the spatialization of potential erosion in the Rheraya catchment

Mathematical and Numerical Analysis of a Class of Non-linear Elliptic Equations in the Two Dimensional Case

8 pagesThe aim of this paper is to show the existence and present a numerical analysis of weak solutions for a quasi-linear elliptic problem with Dirichlet boundary conditions in a domain $\Omega$ and data belonging to $L^1(\Omega)$. A numerical algorithm to compute a numerical approximation of the weak solution is described and analyzed. Numerical examples are presented and commented

Intelligent Local Search Optimization Methods to Optimal Morocco Regime

In this paper, we compare three well-known swarm algorithms on optimal regime based on our mathematical optimization model introduced recently. Different parameters of this latter are estimated based on 176 foods and on who’s the nutrients values are calculated for 100 g. The daily nutrients needs are estimated based on the expert’s knowledge. Different experimentations are realized for different configurations of the considered swarm algorithms. Compared to Stochastic Fractal Search (SFS) and Particle Swarm Optimization Algorithm (PSO), the Firefly Algorithm (FA) produces the main suitable regimes

First inappropriate implantable cardioverter defibrillator therapy is often due to inaccurate device programming: analysis of the French OPERA registry

AIMS:Inappropriate therapy delivered by implantable cardioverter defibrillators (ICDs) remains a challenge. The OPERA registry measured the times to, and studied the determinants of, first appropriate (FAT) and inappropriate (FIT) therapies delivered by single-, dual- and triple-chamber [cardiac resynchronization therapy defibrillator (CRT-D)] ICD. METHODS AND RESULTS: We entered 636 patients (mean age = 62.0 ± 13.5 years; 88% men) in the registry, of whom 251 received single-, 238 dual-, and 147 triple-chamber ICD, for primary (30.5%) or secondary (69.5%) indications. We measured times to FAT and FIT as a function of multiple clinical characteristics, examined the effects of various algorithm components on the likelihood of FAT and FIT delivery, and searched for predictors of FAT and FIT. Over 22.8 ± 8.8 months of observation, 184 patients (28.9%) received FAT and 70 (11.0%) received FIT. Ventricular tachycardia (VT) was the trigger of 88% of FAT, and supraventricular tachycardia was the trigger of 91% of FIT. The median times to FIT (90 days; range 49-258) and FAT (171 days; 50-363) were similar. The rate of FAT was higher (P <0.001) in patients treated for secondary than primary indications, while that of FIT were similar in both groups. Out of 57 analysable FIT, 27 (47.4%) could have been prevented by fine tuning the device programming like the sustained rate duration or the VT discrimination algorithm. CONCLUSIONS: First inappropriate therapy occurred in 11% of 636 ICD recipients followed for ∼2 years. Nearly 50% of FIT could have been prevented by improving device programming

0107: Strategy of early detection and active management of supraventricular arrhythmia with remote monitoring: the randomized, multicenter SETAM trial

ObjectiveAtrial fibrillation (AF) is a common arrhythmia associated with increased risk of thromboembolic events or other complications. The French randomized, multicenter, SETAM trial assessed the impact of the home monitoring (HM) technology on detection and treatment of supra-ventricular arrhythmia (SVA).MethodsPatients (pts) implanted with a dual chamber pacemaker were enrolled in the study at hospital discharge if they had a sinusal rhythm at enrollment, no antiarrhythmic, anticoagulant or dual-antiplatelet therapy, and if they had a CHA2DS2-VASc score of 2 or more. The pts were randomly assigned to an active group (Act Gp), followed by Biotronik HM, or a control group (Cont Gp) without HM surveillance. The time from implantation to the first SVA-related intervention was compared between the 2 groups (primary endpoint).ResultsA total of 595 pts (mean age = 79±8 y.o, 63% male, mean CHA2DS2-VASc score = 3.7±1.2) were followed during 12.8±3.3Mo. The most prevalent co-morbidities were hypertension (82% pts), diabetes (29%) and vascular disease (24%). Implantation indications were atrio-ventricular blocks in 77% of pts, sinus node disease in 20% and others in 3%.The global SVA incidence was 25% (29% in the Act Gp vs 22% in the Cont Gp, p=ns).A therapy (drugs or ablation) was instituted for 49/291 pts (17%) in the Act Gp vs 43/304 pts (14%) in the Cont Gp (p=ns). The median time from implantation to the first therapy for SVA was 114 [44; 241] days in the Act Gp vs 224 [67; 366] days in the Cont Gp, representing a median gain of 110-days in SVA management (50% reduction, p=0.01). Over these 92 pts, 54 had AF (59%) and 38 had atrial flutter or tachyarrhythmia (41%). Anticoagulation was initiated in 80% of pts and antiarrhythmic drugs in 55%.ConclusionThe SETAM study demonstrated that HM allows earlier detection and treatment of SVA in pacemaker pts. The next step is to report how early detection of SVA with HM can possibly improve the patients clinical outcome

Numerical analysis of a model for Nickel-Iron alloy electrodeposition on rotating disk electrode

International audienceTo better understand the nickel-iron electrodeposition process, we have developed one-dimensional numerical model. This model addresses dissociation, diffusion, electromigration, convection and deposition of multiple ion species.\ The reaction mechanism in this model differs in that $$ and $Fe^{2+}$ are the electroactive species and $NiOH^{+}$ and $$ are not involved whatsover.\ To take account of the anisot-ropic behaviour of the solution we introduce a domain decomposition numerical method. Simulations with experimental data shows that our model can predict characteristic features of the nickel-iron system

First Investigation of the Composition and Spatial Distribution of Polychaete Feeding Guilds from Essaouira Protected Coastal area (Atlantic Coast of Morocco)

Several researches have been conducted to explain patterns of the abundance, richness and taxonomic diversity of benthic polychaetes; however, such analyses have ignored the functional diversity of polychaete communities, especially feeding guilds in intertidal rocky shores. The present study was carried out to describe and analyse the polychaete feeding guilds on intertidal rocky shores and then examine the effects of environmental factors. Twelve intertidal rocky shores from the coastal protected area of Essaouira (Atlantic coast of Morocco) were sampled during the summer of 2016. A total of 42 polychaete species belonging to 29 genera and 16 families were identified among the 4517 specimens collected. The medium biomass per sampling site was found to be 37.61 ± 15.80 g.m-2 . The polychaete species were classified into five feeding guilds, and nine feeding modes. The filter feeders were the dominant feeding guild (32%) followed by omnivores (23%), burrowers (20%), carnivorous (15%) and surface deposit-feeders (10%). The FDT (filter feeder, discretely motile, with tentacles) was the most abundant feeding mode, accounting for 24% of abundance (mainly represented by Sabellaria alveolata), followed by the ODJ feeding mode (omnivorous, discretely motile, with jaw apparatus) with 22%, and the SDT feeding mode (surface deposit feeder, discretely motile, with tentacles) with 18.9%. The highest trophic importance index and index of trophic diversity values were recorded in the southern region of Essaouira coastline. Based on the canonical correspondence analysis, composition and spatial distribution of polychaete feeding guilds were mainly related to the length of rocky shores and water temperature