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Sample records for climatiques projections pour

  1. Gestion des ressources hydriques adaptee aux changements climatiques pour la production optimale d'hydroelectricite. Etude de cas: Bassin versant de la riviere Manicouagan

    NASA Astrophysics Data System (ADS)

    Haguma, Didier

    Il est dorenavant etabli que les changements climatiques auront des repercussions sur les ressources en eau. La situation est preoccupante pour le secteur de production d'energie hydroelectrique, car l'eau constitue le moteur pour generer cette forme d'energie. Il sera important d'adapter les regles de gestion et/ou les installations des systemes hydriques, afin de minimiser les impacts negatifs et/ou pour capitaliser sur les retombees positives que les changements climatiques pourront apporter. Les travaux de la presente recherche s'interessent au developpement d'une methode de gestion des systemes hydriques qui tient compte des projections climatiques pour mieux anticiper les impacts de l'evolution du climat sur la production d'hydroelectricite et d'etablir des strategies d'adaptation aux changements climatiques. Le domaine d'etude est le bassin versant de la riviere Manicouagan situe dans la partie centrale du Quebec. Une nouvelle approche d'optimisation des ressources hydriques dans le contexte des changements climatiques est proposee. L'approche traite le probleme de la saisonnalite et de la non-stationnarite du climat d'une maniere explicite pour representer l'incertitude rattachee a un ensemble des projections climatiques. Cette approche permet d'integrer les projections climatiques dans le probleme d'optimisation des ressources en eau pour une gestion a long terme des systemes hydriques et de developper des strategies d'adaptation de ces systemes aux changements climatiques. Les resultats montrent que les impacts des changements climatiques sur le regime hydrologique du bassin de la riviere Manicouagan seraient le devancement et l'attenuation de la crue printaniere et l'augmentation du volume annuel d'apports. L'adaptation des regles de gestion du systeme hydrique engendrerait une hausse de la production hydroelectrique. Neanmoins, une perte de la performance des installations existantes du systeme hydrique serait observee a cause de l'augmentation des

  2. Developpement D'un Modele Climatique Regional: Fizr Simulation des Conditions de Janvier de la Cote Ouest Nord Americaine

    NASA Astrophysics Data System (ADS)

    Goyette, Stephane

    1995-11-01

    Le sujet de cette these concerne la modelisation numerique du climat regional. L'objectif principal de l'exercice est de developper un modele climatique regional ayant les capacites de simuler des phenomenes de meso-echelle spatiale. Notre domaine d'etude se situe sur la Cote Ouest nord americaine. Ce dernier a retenu notre attention a cause de la complexite du relief et de son controle sur le climat. Les raisons qui motivent cette etude sont multiples: d'une part, nous ne pouvons pas augmenter, en pratique, la faible resolution spatiale des modeles de la circulation generale de l'atmosphere (MCG) sans augmenter a outrance les couts d'integration et, d'autre part, la gestion de l'environnement exige de plus en plus de donnees climatiques regionales determinees avec une meilleure resolution spatiale. Jusqu'alors, les MCG constituaient les modeles les plus estimes pour leurs aptitudes a simuler le climat ainsi que les changements climatiques mondiaux. Toutefois, les phenomenes climatiques de fine echelle echappent encore aux MCG a cause de leur faible resolution spatiale. De plus, les repercussions socio-economiques des modifications possibles des climats sont etroitement liees a des phenomenes imperceptibles par les MCG actuels. Afin de circonvenir certains problemes inherents a la resolution, une approche pratique vise a prendre un domaine spatial limite d'un MCG et a y imbriquer un autre modele numerique possedant, lui, un maillage de haute resolution spatiale. Ce processus d'imbrication implique alors une nouvelle simulation numerique. Cette "retro-simulation" est guidee dans le domaine restreint a partir de pieces d'informations fournies par le MCG et forcee par des mecanismes pris en charge uniquement par le modele imbrique. Ainsi, afin de raffiner la precision spatiale des previsions climatiques de grande echelle, nous developpons ici un modele numerique appele FIZR, permettant d'obtenir de l'information climatique regionale valide a la fine echelle spatiale

  3. Modelisation de l'erosion et des sources de pollution dans le bassin versant Iroquois/Blanchette dans un contexte de changements climatiques

    NASA Astrophysics Data System (ADS)

    Coulibaly, Issa

    Principale source d'approvisionnement en eau potable de la municipalite d'Edmundston, le bassin versant Iroquois/Blanchette est un enjeu capital pour cette derniere, d'ou les efforts constants deployes pour assurer la preservation de la qualite de son eau. A cet effet, plusieurs etudes y ont ete menees. Les plus recentes ont identifie des menaces de pollution de diverses origines dont celles associees aux changements climatiques (e.g. Maaref 2012). Au regard des impacts des modifications climatiques annonces a l'echelle du Nouveau-Brunswick, le bassin versant Iroquois/Blanchette pourrait etre fortement affecte, et cela de diverses facons. Plusieurs scenarios d'impacts sont envisageables, notamment les risques d'inondation, d'erosion et de pollution a travers une augmentation des precipitations et du ruissellement. Face a toutes ces menaces eventuelles, l'objectif de cette etude est d'evaluer les impacts potentiels des changements climatiques sur les risques d'erosion et de pollution a l'echelle du bassin versant Iroquois/Blanchette. Pour ce faire, la version canadienne de l'equation universelle revisee des pertes en sol RUSLE-CAN et le modele hydrologique SWAT ( Soil and Water Assessment Tool) ont ete utilises pour modeliser les risques d'erosion et de pollution au niveau dans la zone d'etude. Les donnees utilisees pour realiser ce travail proviennent de sources diverses et variees (teledetections, pedologiques, topographiques, meteorologiques, etc.). Les simulations ont ete realisees en deux etapes distinctes, d'abord dans les conditions actuelles ou l'annee 2013 a ete choisie comme annee de reference, ensuite en 2025 et 2050. Les resultats obtenus montrent une tendance a la hausse de la production de sediments dans les prochaines annees. La production maximale annuelle augmente de 8,34 % et 8,08 % respectivement en 2025 et 2050 selon notre scenario le plus optimiste, et de 29,99 % en 2025 et 29,72 % en 2050 selon le scenario le plus pessimiste par rapport a celle

  4. Etude du processus de changement vecu par des familles ayant decide d'adopter volontairement des comportements d'attenuation des changements climatiques

    NASA Astrophysics Data System (ADS)

    Leger, Michel T.

    Les activites humaines energivores telles l'utilisation intensive de l'automobile, la surconsommation de biens et l'usage excessif d'electricite contribuent aux changements climatiques et autres problemes environnementaux. Bien que plusieurs recherches rapportent que l'etre humain est de plus en plus conscient de ses impacts sur le climat de la planete, ces memes recherches indiquent qu'en general, les gens continuent a se comporter de facon non ecologique. Que ce soit a l'ecole ou dans la communaute, plusieurs chercheurs en education relative a l'environnement estiment qu'une personne bien intentionnee est capable d'adopter des comportements plus respectueux de l'environnement. Le but de cette these etait de comprendre le processus d'integration de comportements d'attenuation des changements climatiques dans des familles. A cette fin, nous nous sommes fixe deux objectifs : 1) decrire les competences et les procedes qui favorisent l'adoption de comportements d'attenuation des changements climatiques dans des familles et 2) decrire les facteurs et les dynamiques familiales qui facilitent et limitent l'adoption de comportements d'attenuation des changements climatiques dans des familles. Des familles ont ete invitees a essayer des comportements personnels et collectifs d'attenuation des changements climatiques de sorte a integrer des modes de vie plus ecologiques. Sur une periode de huit mois, nous avons suivi leur experience de changement afin de mieux comprendre comment se produit le processus de changement dans des familles qui decident volontairement d'adopter des comportements d'attenuation des changements climatiques. Apres leur avoir fourni quelques connaissances de base sur les changements climatiques, nous avons observe le vecu de changement des familles durant huit mois d'essais a l'aide de journaux reflexifs, d'entretiens d'explicitation et du journal du chercheur. La these comporte trois articles scientifiques. Dans le premier article, nous presentons une

  5. Des ballons pour demain

    NASA Astrophysics Data System (ADS)

    Régipa, R.

    A partir d'une théorie sur la détermination des formes et des contraintes globales d'un ballon de révolution, ou s'en rapprochant, une nouvelle famille de ballons a été définie. Les ballons actuels, dits de ``forme naturelle'', sont calculés en général pour une tension circonférencielle nulle. Ainsi, pour une mission donnée, la tension longitudinale et la forme de l'enveloppe sont strictement imposées. Les ballons de la nouvelle génération sont globalement cylindriques et leurs pôles sont réunis par un câble axial, chargé de transmettre une partie des efforts depuis le crochet (pôle inférieur), directement au pôle supérieur. De plus, la zone latérale cylindrique est soumise à un faible champ de tensions circonférencielles. Ainsi, deux paramètres permettent de faire évoluer la distribution des tensions et la forme de l'enveloppe: - la tension du câble de liaison entre pôles (ou la longueur de ce câble) - la tension circonférencielle moyenne désirée (ou le rayon du ballon). On peut donc calculer et réaliser: - soit des ballons de forme adaptée, comme les ballons à fond plat pour le bon fonctionnement des montgolfières infrarouge (projet MIR); - soit des ballons optimisés pour une bonne répartition des contraintes et une meilleure utilisation des matériaux d'enveloppe, pour l'ensemble des programmes stratosphériques. Il s'ensuit une économie sensible des coûts de fabrication, une fiabilité accrue du fonctionnement de ces ballons et une rendement opérationnel bien supérieur, permettant entre autres, d'envisager des vols à très haute altitude en matériaux très légers.

  6. VIEW POURING PLATFORM SHOWING MOLD POURING JACKETS AND WEIGHTS AND, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW POURING PLATFORM SHOWING MOLD POURING JACKETS AND WEIGHTS AND, IN THE FOREGROUND, SAND RETURN FROM THE SHAKEOUT ACTUATING A SIMPLE LEVER SYSTEM THAT ADDED FRESH WATER TO THE SAND IN PREPARATION FOR ITS REUSE. - Southern Ductile Casting Company, Centerville Foundry, 101 Airport Road, Centreville, Bibb County, AL

  7. Step by Step': A Community Based Rehabilitation Project with Disabled Children in Guyana. Bilingual Version = Pas a pas: Un project de readaptation a base communautaire pour les enfants handicapes en Guyane. Version bilingue. Notes, Comments...No. 189.

    ERIC Educational Resources Information Center

    O'Toole, Brian

    The document, in both English and French, describes a 2-year project in Guyana based on the principle of community-based rehabilitation (CBR), which stresses training local community residents as supervisors to provide training of rehabilitation workers and direct services to children with disabilities living in rural areas. The program provided…

  8. When It Rains, It Pours

    ERIC Educational Resources Information Center

    Mills, Linda

    2012-01-01

    "It's raining, it's pouring, the old man is snoring!" "The itsy, bitsy spider crawled up the waterspout, down came the rain and washed the spider out. Out came the sun and dried up all the rain, and the itsy, bitsy spider went up the spout again." What do children's nursery rhymes have to do with the school library? The author begins by telling a…

  9. Pouring on the steam

    SciTech Connect

    Valenti, M.

    1996-02-01

    Engineers at Solar Turbines Inc. in San Diego have achieved a breakthrough in steam power by using modern gas-turbine technology, high-temperature-resistant superalloys, advanced manufacturing technologies, and a new class of steam generators to build a high-performance steam system (HPSS). The system is a full-scale, 4-megawatt industrial prototype steam power plant that produces steam heated to 1,500 F and pressurized to 1,500 psig. In a cogeneration steam cycle, these temperatures and pressures can double the power generated using the same amount of steam, according to the US Department of Energy (DOE), which sponsored the project as part of the Advanced Turbine System Program.

  10. INTERIOR VIEW, LOOKING WEST, WITH CRANE OPERATOR, TED SEALS, POURING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR VIEW, LOOKING WEST, WITH CRANE OPERATOR, TED SEALS, POURING MOLTEN METAL INTO A 1,300 TON ELECTRIC HOLDING FURNACE OR MIXER. AN ELECTRONIC SCALE RECORDED THAT 50.5 TONS OF METAL WERE POURED INTO THE FURNACE DURING THIS POUR. - American Cast Iron Pipe Company, Mixer Building, 1501 Thirty-first Avenue North, Birmingham, Jefferson County, AL

  11. A Statistical Treatment of Bioassay Pour Fractions

    NASA Technical Reports Server (NTRS)

    Barengoltz, Jack; Hughes, David W.

    2014-01-01

    The binomial probability distribution is used to treat the statistics of a microbiological sample that is split into two parts, with only one part evaluated for spore count. One wishes to estimate the total number of spores in the sample based on the counts obtained from the part that is evaluated (pour fraction). Formally, the binomial distribution is recharacterized as a function of the observed counts (successes), with the total number (trials) an unknown. The pour fraction is the probability of success per spore (trial). This distribution must be renormalized in terms of the total number. Finally, the new renormalized distribution is integrated and mathematically inverted to yield the maximum estimate of the total number as a function of a desired level of confidence ( P(pour fraction. The extension to recovery efficiency corrections is also presented. Now the product of recovery efficiency and pour fraction may be small enough that the likely value may be much larger than the usual calculation: the number of spores divided by that product. The use of this analysis would not be limited to microbiological data.

  12. 54. Downstream face of Agua Fria project's diversion dam showing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    54. Downstream face of Agua Fria project's diversion dam showing initial masonry construction and poured concrete capping. Photographer Mark Durben, 1986. Source: Salt River Project. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  13. Lubricating oil containing VII pour depressant

    SciTech Connect

    Hart, W.P.; Mays, D.L.

    1986-08-19

    Lubricating oils for internal combustion engines typically contain a multitude of additives which function as detergents, dispersants, viscosity index improvers, pour depressants, etc. in order to improve the properties of the oil. It is found that it is particularly necessary to improve the properties exhibited by lubricating oil compositions at low temperatures. It is an object of this invention to provide a lubricating oil containing an additive which provides improved properties at low temperatures.

  14. FRONT VIEW OF POURING FROM #61 HOLDING FURNACE AT #02 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    FRONT VIEW OF POURING FROM #61 HOLDING FURNACE AT #02 STATION INTO THREE VERTICAL MOLDS SUBMERGED IN A WATER-FILLED TANK BELOW THE CASTING FLOOR. THE CASTING CREW'S JOBS DURING THIS PHASE OF THE OPERATION INCLUDE REGULATING THE POURING RATE AND MONITORING THE VALVE RODS THAT CONTROL THE WATER SPRAYS ON THE MOLDS. DIFFERENT ALLOYS REQUIRE SPECIFIC POURING SPEEDS AND WATER PRESSURES. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

  15. Developpement des betons semi autoplacants a rheologie adaptee pour des infrastructures

    NASA Astrophysics Data System (ADS)

    Sotomayor Cruz, Cristian Daniel

    Au cours des dernières décennies, les infrastructures canadiennes et québécoises comportent plusieurs structures en béton armé présentant des problèmes de durabilité dus aux conditions climatiques sévères, à la mauvaise conception des structures, à la qualité des matériaux, aux types des bétons choisis, aux systèmes de construction ou à l'existence d'événements incontrôlables. En ce qui concerne le choix du béton pour la construction des infrastructures, une vaste gamme de béton divisée en deux principaux types peut être utilisée: le béton conventionnel vibré (BCV) et le béton autoplaçant (BAP). Dans le cas d'un BCV, la consolidation inadéquate par vibration a été un problème récurrent, occasionnant des dommages structuraux. Ceci a conduit à une réduction de la durabilité et à une augmentation du coût d'entretien et de réparation des infrastructures. Rien que l'utilisation d'un BAP a des avantages tels que l'élimination de la vibration, la réduction des coûts de main d'oeuvre et l'amélioration de la qualité des structures, néanmoins, le coût initial d'un BAP par rapport à un BCV ne permet pas encore de généraliser son utilisation dans l'industrie de la construction. Ce mémoire présente la conception d'une nouvelle gamme de béton semi-autoplaçant pour la construction des infrastructures (BSAP-I) exigeant une vibration minimale. Il s'agit de trouver un équilibre optimal entre la rhéologie et le coût initial du nouveau béton pour conférer une bonne performance structurale et économique aux structures. Le programme expérimental établi a premièrement permis d'évaluer la faisabilité d'utilisation des BSAP-I pour la mise en place des piliers d'une infrastructure de pont à Sherbrooke. En plus, l'utilisation d'un plan d'expériences a permis l'évaluation de trois paramètres de formulation sur les propriétés des mélanges de BSAP-I à l'état frais et durci. Finalement, l'évaluation de la performance des

  16. A statistical treatment of bioassay pour fractions

    NASA Astrophysics Data System (ADS)

    Barengoltz, Jack; Hughes, David

    A bioassay is a method for estimating the number of bacterial spores on a spacecraft surface for the purpose of demonstrating compliance with planetary protection (PP) requirements (Ref. 1). The details of the process may be seen in the appropriate PP document (e.g., for NASA, Ref. 2). In general, the surface is mechanically sampled with a damp sterile swab or wipe. The completion of the process is colony formation in a growth medium in a plate (Petri dish); the colonies are counted. Consider a set of samples from randomly selected, known areas of one spacecraft surface, for simplicity. One may calculate the mean and standard deviation of the bioburden density, which is the ratio of counts to area sampled. The standard deviation represents an estimate of the variation from place to place of the true bioburden density commingled with the precision of the individual sample counts. The accuracy of individual sample results depends on the equipment used, the collection method, and the culturing method. One aspect that greatly influences the result is the pour fraction, which is the quantity of fluid added to the plates divided by the total fluid used in extracting spores from the sampling equipment. In an analysis of a single sample’s counts due to the pour fraction, one seeks to answer the question: What is the probability that if a certain number of spores are counted with a known pour fraction, that there are an additional number of spores in the part of the rinse not poured. This is given for specific values by the binomial distribution density, where detection (of culturable spores) is success and the probability of success is the pour fraction. A special summation over the binomial distribution, equivalent to adding for all possible values of the true total number of spores, is performed. This distribution when normalized will almost yield the desired quantity. It is the probability that the additional number of spores does not exceed a certain value. Of course

  17. APPARATUS FOR MELTING AND POURING METAL

    DOEpatents

    Harris, F.A.

    1958-02-25

    This patent relates to a crucible for melting and pouring a metal under controlled atmospheric conditions. The crucible has a frangible plug in the bottom and a retaining device to prevent the entrance of the broken portions of the plug into the mold without interfering with the flow of the melt. After the charge has been melted, a knockout rod is lowered through the charge and forced against the frangible plug sufficiently to break off the closure disk along a previously scored line. The disk drops onto a retaining grid large enough to permit the flow of metal around the disk and into the mold below. Thts arrangement elimnates the entry of broken portions of the plug into the mold, thereby elimnating a common cause of imperfect castings.

  18. Expanding Ring for the DWPF Melter Pour Spout

    SciTech Connect

    Imrich, K.J.

    2002-09-23

    The Materials Technology Section was requested to develop a novel concept, namely that of an expanding ring, to restore the upper knife edge in the DWPF melter pour spout. The expanding ring is a unit that, when deployed in the DPWF pour spout, will self-expand against the inner diameter of the 3-inch section of the pour spout providing a seal against glass leakage and a new knife edge that will mate with a Type 3A insert. This report provides a summary of the final design features of the expanding ring and an overview of its development.

  19. Transfert radiatif numerique pour un code SPH

    NASA Astrophysics Data System (ADS)

    Viau, Joseph Edmour Serge

    2001-03-01

    Le besoin de reproduire la formation d'etoiles par simulations numeriques s'est fait de plus en plus present au cours des 30 dernieres annees. Depuis Larson (1968), les codes de simulations n'ont eu de cesse de s'ameliorer. D'ailleurs, en 1977, Lucy introduit une autre methode de calcul venant concurrencer la methode par grille. Cette nouvelle facon de calculer utilise en effet des points a defaut d'utiliser des grilles, ce qui est une bien meilleure adaptation aux calculs d'un effondrement gravitationnel. Il restait cependant le probleme d'ajouter le transfert radiatif a un tel code. Malgre la proposition de Brookshaw (1984), qui nous montre une formule permettant d'ajouter le transfert radiatif sous la forme SPH tout en evitant la double sommation genante qu'elle implique, aucun code SPH a ce jour ne contient un transfert radiatif satisfaisant. Cette these presente pour la premiere fois un code SPH muni d'un transfert radiatif adequat. Toutes les difficultes ont pu etre surmontees afin d'obtenir finalement le transfert radiatif "vrai" qui survient dans l'effondrement d'un nuage moleculaire. Pour verifier l'integrite de nos resultats, une comparaison avec le nonisothermal test case de Boss & Myhill (1993) nous revele un resultat fort satisfaisant. En plus de suivre fidelement la courbe de l'evolution de la temperature centrale en fonction de la densite centrale, notre code est exempt de toutes les anomalies rencontrees par les codes par grille. Le test du cas de la conduction thermique nous a lui aussi servit a verifier la fiabilite de notre code. La aussi les resultats sont fort satisfaisants. Faisant suite a ces resultats, le code fut utilise dans deux situations reelles de recherche, ce qui nous a permis de demontrer les nombreuses possibilites que nous donne notre nouveau code. Dans un premier temps, nous avons tudie le comportement de la temperature dans un disque d'accretion durant son evolution. Ensuite nous avons refait en partie une experience de Bonnell

  20. Decodeurs rapides pour codes topologiques quantiques

    NASA Astrophysics Data System (ADS)

    Duclos-Cianci, Guillaume

    L'encodage topologique de l'information quantique a attire beaucoup d'attention, car c'est un modele qui semble propice a resister aux erreurs locales. Tout d'abord, le modele du calcul topologique est base sur la statistique anyonique non-Abelienne universelle et sur son controle. Des anyons indesirables peuvent apparaitre soudainement, en raison de fluctuations thermiques ou de processus virtuels. La presence de ces anyons peut corrompre l'information encodee, il est necessaire de les eliminer: la correction consiste a fusionner les defauts tout en preservant la topologie du systeme. Ensuite, dans le cas des codes topologiques, on doit aussi proteger l'information encodee dans la topologie. En effet, dans ces systemes, on n'a acces qu'a une fraction de l'information decrivant l'erreur. Elle est recueillie par des mesures et peut etre interpretee en termes de particules. Ces defauts peuplent le code et doivent etre annihiles adequatement dans le but de preserver l'information encodee. Dans ce memoire, nous proposons un algorithme efficace, appele decodeur, pouvant etre utilise dans les deux contextes decrits ci-haut. Pour y parvenir, cet algorithme s'inspire de methodes de renormalisation et de propagation de croyance. Il est exponentiellement plus rapide que les methodes deja existantes, etant de complexite O (ℓ2 log ℓ) en serie et, si on parallelise, O (log ℓ) en temps, contre O (ℓ6) pour les autres decodeurs. Le temps etant le facteur limitant dans le probleme du decodage, cette caracteristique est primordiale. De plus, il tolere une plus grande amplitude de bruit que les methodes existantes; il possede un seuil de ˜ 16.5% sur le canal depolarisant surpassant le seuil deja etabli de ˜ 15.5%. Finalement, il est plus versatile. En effet, en etant limite au code de Kitaev, on ne savait pas decoder les codes topologiques de maniere generale (e.g. codes de couleur). Or, le decodeur propose dans ce memoire peut traiter la grande classe des codes

  1. POURING IRON FROM BULL LADLE INTO MOBILE LADLES USED TO ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    POURING IRON FROM BULL LADLE INTO MOBILE LADLES USED TO FILL MOLDS ON CONVEYOR LINES AFTER FERRO-SILICON IS ADDED TO ENHANCE DUCTILITY AND FLUIDITY. - Southern Ductile Casting Company, Casting, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

  2. 42. Casting floor, "B" furnace, pour in progress; mudgun is ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    42. Casting floor, "B" furnace, pour in progress; mudgun is to right of furnace; operator takes temperature of iron in trough during pout. Looking south - Rouge Steel Company, 3001 Miller Road, Dearborn, MI

  3. 41. Casting floor, "B" furnace, pour in progress; mudgun is ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    41. Casting floor, "B" furnace, pour in progress; mudgun is to right of furnace; photo taken from furnace operator's booth. Looking south/southwest - Rouge Steel Company, 3001 Miller Road, Dearborn, MI

  4. 6. VIEW LOOKING WEST FROM THE POURING AISLE OF THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW LOOKING WEST FROM THE POURING AISLE OF THE ELECTRIC FURNACE BUILDING AT ELECTRIC FURNACE X-3. - U.S. Steel Duquesne Works, Electric Furnace Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

  5. POURING IRON FROM ELECTRIC FURNACE INTO BULL LADLE AFTER MAGNESIUM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    POURING IRON FROM ELECTRIC FURNACE INTO BULL LADLE AFTER MAGNESIUM HAD BEEN ADDED TO GENERATE DUCTILE IRON WHEN IT COOLS IN THE MOLD. - Southern Ductile Casting Company, Casting, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

  6. 45. EXPOSEDAGGREGATE CONCRETE AT NICHE, NORTH BOUNDARY, SEVERAL TEXTURES POURED ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    45. EXPOSED-AGGREGATE CONCRETE AT NICHE, NORTH BOUNDARY, SEVERAL TEXTURES POURED AT ONE TIME, October 1987 - Meridian Hill Park, Bounded by Fifteenth, Sixteenth, Euclid & W Streets, Northwest, Washington, District of Columbia, DC

  7. 13. MASS OF POURED CONCRETE IN IRREGULAR STEPPED LAYERS AT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. MASS OF POURED CONCRETE IN IRREGULAR STEPPED LAYERS AT THE BASE OF THE LEFT (EAST) BUTTRESS. CAMERA FACING SOUTHWEST. - Salinas Dam, Salinas River near Pozo Road, Santa Margarita, San Luis Obispo County, CA

  8. Investigation of waste glass pouring behavior over a knife edge

    SciTech Connect

    Ebadian, M.A.

    1998-01-01

    The development of vitrification technology for converting radioactive waste into a glass solid began in the early 1960s. Some problems encountered in the vitrification process are still waiting for a solution. One of them is wicking. During pouring, the glass stream flows down the wall of the pour spout until it reaches an angled cut in the wall. At this point, the stream is supposed to break cleanly away from the wall of the pour spout and fall freely into the canister. However, the glass stream is often pulled toward the wall and does not always fall into the canister, a phenomenon known as wicking. Phase 1 involves the assembly, construction, and testing of a melter capable of supplying molten glass at operational flow rates over a break-off point knife edge. Phase 2 will evaluate the effects of glass and pour spout temperatures as well as glass flow rates on the glass flow behavior over the knife edge. Phase 3 will identify the effects on wicking resulting from varying the knife edge diameter and height as well as changing the back-cut angle of the knife edge. The following tasks were completed in FY97: Design the experimental system for glass melting and pouring; Acquire and assemble the melter system; and Perform initial research work.

  9. Project: "Project!"

    ERIC Educational Resources Information Center

    Grayson, Katherine

    2007-01-01

    In November 2006, the editors of "Campus Technology" launched their first-ever High-Resolution Projection Study, to find out if the latest in projector technology could really make a significant difference in teaching, learning, and educational innovation on US campuses. The author and her colleagues asked campus educators,…

  10. Ablation laser pour la microélectronique plastique

    NASA Astrophysics Data System (ADS)

    Alloncle, A.-P.; Thomas, B.; Grojo, D.; Delaporte, Ph.; Sentis, M.; Sanaur, S.; Barret, M.; Collot, Ph.

    2006-12-01

    La microélectronique plastique connaît un développement sans précédent dans le domaine de la recherche. Cette étude s'intéresse à l'utilisation des lasers impulsionnels pour la réalisation de composants organiques sur supports souples. Les deux aspects plus particulièrement étudiés sont d'une part la gravure de polymère pour réaliser un canal entre la source et le drain, et d'autre part le développement d'un procédéde dépôt appelé LIFT pour Laser Induced Forward Transfer. Ce dernier pourrait notamment permettre dedéposer des composés organiques non solubles.

  11. Algorithmes et architectures pour ordinateurs quantiques supraconducteurs

    NASA Astrophysics Data System (ADS)

    Blais, A.

    2003-09-01

    'utilisation de qubits basés sur les jonctions Josephson. On présente entre autres une approche originale pour l'interaction entre qubits. Cette approche est très générale puisqu'elle peut être appliquée à différents designs de qubits. Finalement, on s'intéresse à la lecture des qubits supraconducteurs de flux. Le détecteur suggéré ici a l'avantage de pouvoir être découplé du qubit lorsqu'il n'y a pas de mesure en cours.

  12. STEEL BEAMS FOR FIRST FLOOR BEING READIED FOR CONCRETE POUR ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    STEEL BEAMS FOR FIRST FLOOR BEING READIED FOR CONCRETE POUR UNDER WEATHER SHELTER DURING COLD WINTER. NOTE ABUNDANCE OF BEAMS; THE FLOOR WILL SUPPORT HEAVY LOADS. INL NEGATIVE NO. 1175. Unknown Photographer, 12/20/1950 - Idaho National Engineering Laboratory, Test Reactor Area, Materials & Engineering Test Reactors, Scoville, Butte County, ID

  13. Le sumatriptan intranasal pour la migraine chez les enfants

    PubMed Central

    Goldman, Ran D.; Meckler, Garth D.

    2015-01-01

    Résumé Question Je vois de plus en plus d’enfants et d’adolescents qui souffrent de céphalées pouvant se classer dans la catégorie des migraines. J’ai fait des lectures sur le sumatriptan par voie intranasale comme thérapie abortive. Est-ce un traitement efficace? Réponse La migraine aiguë chez les enfants et les adolescents est fréquente et difficile à traiter. Le sumatriptan intranasal est une option sûre et généralement efficace pour les enfants et les adolescents. La dose actuellement recommandée est de 20 mg pour les enfants qui pèsent plus de 40 kg et de 10 mg pour ceux dont le poids se situe entre 20 et 39 kg. Il faudrait faire des études de plus grande envergure pour contrecarrer les limitations des échantillons de petite taille et mieux comprendre la faible concentration plasmique et les effets placebo observés dans les études jusqu’à présent.

  14. First Concrete Poured for NSLS-II Ring Building

    SciTech Connect

    2009-07-20

    The first bits of the National Synchrotron Light Source II (NSLS-II) ring building are now taking shape after the concrete-pouring process for the new, world-class facility began on Monday, July 20. Once complete, the 400,000 square-foot building will house the accelerator ring, the largest component of the machine.

  15. A Systematic Review of the Free-Pour Assessment: Implications for Research, Assessment and Intervention.

    PubMed

    Schultz, Nicole R; Kohn, Carolynn S; Schmerbauch, Megan; Correia, Christopher J

    2017-03-13

    Excessive alcohol consumption is a major concern. Alcohol consumption data are typically collected via self-report questionnaires. However, research has suggested that individuals are unable to identify a standard drink size and that their self-report may be influenced by certain environmental conditions, calling into question the reliability and validity of self-report. The free-pour is an objective measure that may provide a clearer picture of current alcohol consumption trends, individuals' knowledge of standard drink sizes, and accuracy of self-report. This systematic review of existing free-pour assessment methods suggests that individuals are unable to identify and pour standard drink sizes, with the largest discrepancies occurring for liquor and wine pours and pours into larger and wider glasses. Additional variables that appear to influence pouring behavior are gender, pouring location (e.g., home or laboratory), pouring task (e.g., selecting a line or physically pouring), and drinking history; however, additional research is necessary to better understand the effects of these variables on pouring behavior. These findings have important implications for the accuracy of self-report measures, as well as clinical implications for alcohol use screenings, alcohol education courses, and brief interventions for alcohol use. The systematic review concludes with recommendations for practical applications and future research of the free-pour assessment. (PsycINFO Database Record

  16. Influence of delayed pouring on irreversible hydrocolloid properties.

    PubMed

    Rodrigues, Stéfani Becker; Augusto, Carolina Rocha; Leitune, Vicente Castelo Branco; Samuel, Susana Maria Werner; Collares, Fabrício Mezzomo

    2012-01-01

    The aim of this study was to evaluate the physical properties of irreversible hydrocolloid materials poured immediately and after different storage periods. Four alginates were tested: Color Change (Cavex); Hydrogum (Zhermack); Hydrogum 5 (Zhermack); and Hydro Print Premium (Coltene). Their physical properties, including the recovery from deformation (n = 3), compressive strength (n = 3), and detail reproduction and gypsum compatibility (n = 3), were analyzed according to ANSI/ADA specification no. 18. Specimens were stored at 23ºC and humidity and were then poured with gypsum immediately and after 1, 2, 3, 4, and 5 days. The data were analyzed by two-way analysis of variance (ANOVA) and Tukey's test at p < 0.05. All of the alginate impression materials tested exhibited detail reproduction and gypsum compatibility at all times. Hydro Print Premium and Hydrogum 5 showed recovery from deformation, as established by ANSI/ADA specification no. 18, after 5 days of storage. As the storage time increased, the compressive strength values also increased. Considering the properties of compounds' recovery from deformation, compressive strength, and detail reproduction and gypsum compatibility, irreversible hydrocolloids should be poured immediately.

  17. Etude de la variabilite climatique des hautes latitudes nord, derivee d'observations satellites micro-ondes

    NASA Astrophysics Data System (ADS)

    Mialon, Arnaud

    Observing sub-polar ecosystems is important as they are suspected to change significantly in response to the expected increase in temperature for the next decades. To bypass the lack of meteorological stations in the Northern High Latitudes, remote sensing is an interesting alternative tool, covering almost the entire area. This project deals with the development of a method to derive surface parameters (>50°N) from satellite data. For this study, brightness temperature data acquired by the SSM/I (Special Sensor Microwave Imager) in the microwave spectrum are used because they are independent of solar radiation and weakly influenced by the atmosphere. Methods used are based on brightness temperatures measured at 19 and 37 GHz, which allow to derive three geophysical parameters related to climate variability: daily maps of snowcover between 1988 and 2002; a water surface extent (open water, small lakes, reservoirs, wetlands associated with low vegetation); a temperature characterizing the surface and the air above the ground. A method to normalize the temperature is presented to overcome the variation of the time of measurement. It leads to hourly series of temperature, This allows to study climate indicators such as the annual sum of positive degree days. Trends confirm observed climate evolution: increase of surface temperature (+0.8 +/- 0.4°C for Canada/Alaska between 1992 and 2002), decrease in snow extent cover. These original databases could also be useful for validation of regional climate model. (Abstract shortened by UMI.)

  18. International Project on Technical and Vocational Education (UNEVOC). International Advisory Committee (First Session, Berlin, Germany, September 20-22, 1993). Final Report = Projet International pour l'Enseignement Technique et Professionnel (UNEVOC). Comite Consultatif International (Premiere Session, Berlin, Germany, 20-22 septembre 1993). Rapport Final.

    ERIC Educational Resources Information Center

    United Nations Educational, Scientific, and Cultural Organization, Paris (France).

    The international advisory committee of the International Project on Technical and Vocational Education (UNEVOC) held its first session in Berlin in September 1993. The advisory committee's 10 members and observers from the United Nations' specialized, intergovernmental, and nongovernmental organizations discussed educational policy, links between…

  19. Literacy and Health Project. Phase One. Making the World Healthier and Safer for People Who Can't Read = Projet alphabetisation et sante: Premiere etape. Rendre le milieu plus sain et sans danger pour les personnes qui ne savent pas lire.

    ERIC Educational Resources Information Center

    Ontario Public Health Association, Toronto.

    The Literacy and Health Project was set up to determine how reading and health problems were connected. A research phase documented the relationship between literacy and health. Information was collected from community organizations, literature review, three case studies in Ontario, and key informant interviews. The consultation process involved…

  20. List of Participating Institutions: Associated Schools Project in Education for International Co-operation and Peace = Liste des establissements participants: Systeme des ecoles associees appliquant un programme d'education pour la cooperation internationale et la paix = Lista de Instituciones Participantes: Plan de Escuelas Asociadas en la Educacion para la Cooperacion Internacional y la Paz.

    ERIC Educational Resources Information Center

    United Nations Educational, Scientific, and Cultural Organization, Paris (France).

    A list of participating institutions at the Associated Schools Project in Education for International Co-Operation and Peace, December 31, 1985 is presented. A total of 1,970 institutions in 94 countries participated, including 47 nursery schools, 556 primary schools, 1,123 secondary schools, and 248 teacher training institutions. Addresses of…

  1. CONCRETE POURS HAVE PRODUCED A REINFORCED SUPPORT BASE FOR MTR ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CONCRETE POURS HAVE PRODUCED A REINFORCED SUPPORT BASE FOR MTR REACTOR. PIPE TUNNEL IS UNDER CONSTRUCTION AT CENTER OF VIEW. PIPES WILL CARRY RADIOACTIVE WATER FROM REACTOR TO WATER PROCESS BUILDING. CAMERA LOOKS SOUTH INTO TUNNEL ALONG WEST SIDE OF REACTOR BASE. TWO CAISSONS ARE AT LEFT SIDE OF VIEW. NOTE "WINDOW" IN SOUTH FACE OF REACTOR BASE AND ALSO GROUP OF PENETRATIONS TO ITS LEFT. INL NEGATIVE NO. 733. Unknown Photographer, 10/6/1950 - Idaho National Engineering Laboratory, Test Reactor Area, Materials & Engineering Test Reactors, Scoville, Butte County, ID

  2. Conception d'un circuit d'etouffement pour photodiodes a avalanche en mode geiger pour integration heterogene 3d

    NASA Astrophysics Data System (ADS)

    Boisvert, Alexandre

    Le Groupe de Recherche en Appareillage Medical de Sherbrooke (GRAMS) travaille actuellement sur un programme de recherche portant sur des photodiodes a avalanche mono-photoniques (PAMP) operees en mode Geiger en vue d'une application a la tomographie d'emission par positrons (TEP). Pour operer dans ce mode; la PAMP, ou SPAD selon l'acronyme anglais (Single Photon Avalanche Diode), requiert un circuit d'etouffement (CE) pour, d'une part, arreter l'avalanche pouvant causer sa destruction et, d'autre part. la reinitialiser en mode d'attente d'un nouveau photon. Le role de ce CE comprend egalement une electronique de communication vers les etages de traitement avance de signaux. La performance temporelle optimale du CE est realisee lorsqu'il est juxtapose a la PAMP. Cependant, cela entraine une reduction de la surface photosensible ; un element crucial en imagerie. L'integration 3D, a base d'interconnexions verticales, offre une solution elegante et performante a cette problematique par l'empilement de circuits integres possedant differentes fonctions (PAMP, CE et traitement avance de signaux). Dans l'approche proposee, des circuits d'etouffement de 50 pm x 50 pm realises sur une technologie CMOS 130 mn 3D Tezzaron, contenant chacun 112 transistors, sont matrices afin de correspondre a une matrice de PAMP localisee sur une couche electronique superieure. Chaque circuit d'etouffement possede une gigue temporelle de 7,47 ps RMS selon des simulations faites avec le logiciel Cadence. Le CE a la flexibilite d'ajuster les temps d'etouffement et de recharge pour la PAMP tout en presentant une faible consommation de puissance (~ 0,33 mW a 33 Mcps). La conception du PAMP necessite de supporter des tensions superieures aux 3,3 V de la technologie. Pour repondre a ce probleme, des transistors a drain etendu (DEMOS) ont ete realises. En raison de retards de production par Ies fabricants, les circuits n'ont pu etre testes physiquement par des mesures. Les resultats de ce memoire

  3. Caracterisation thermique de modules de refroidissement pour la photovoltaique concentree

    NASA Astrophysics Data System (ADS)

    Collin, Louis-Michel

    Pour rentabiliser la technologie des cellules solaires, une reduction du cout d'exploitation et de fabrication est necessaire. L'utilisation de materiaux photovoltaiques a un impact appreciable sur le prix final par quantite d'energie produite. Une technologie en developpement consiste a concentrer la lumiere sur les cellules solaires afin de reduire cette quantite de materiaux. Or, concentrer la lumiere augmente la temperature de la cellule et diminue ainsi son efficacite. Il faut donc assurer a la cellule un refroidissement efficace. La charge thermique a evacuer de la cellule passe au travers du recepteur, soit la composante soutenant physiquement la cellule. Le recepteur transmet le flux thermique de la cellule a un systeme de refroidissement. L'ensemble recepteur-systeme de refroidissement se nomme module de refroidissement. Habituellement, la surface du recepteur est plus grande que celle de la cellule. La chaleur se propage donc lateralement dans le recepteur au fur et a mesure qu'elle traverse le recepteur. Une telle propagation de la chaleur fournit une plus grande surface effective, reduisant la resistance thermique apparente des interfaces thermiques et du systeme de refroidissement en aval vers le module de refroidissement. Actuellement, aucune installation ni methode ne semble exister afin de caracteriser les performances thermiques des recepteurs. Ce projet traite d'une nouvelle technique de caracterisation pour definir la diffusion thermique du recepteur a l'interieur d'un module de refroidissement. Des indices de performance sont issus de resistances thermiques mesurees experimentalement sur les modules. Une plateforme de caracterisation est realisee afin de mesurer experimentalement les criteres de performance. Cette plateforme injecte un flux thermique controle sur une zone localisee de la surface superieure du recepteur. L'injection de chaleur remplace le flux thermique normalement fourni par la cellule. Un systeme de refroidissement est installe

  4. VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER STATION IN THE CASTING SHOP. (OTHER UNITS MELT BRASS ALLOYS.) THIS IS THE SOUTHERNMOST FURNACE OF THE FOUR PRESENTLY IN SITU. THE CURRENT CASTING SHOP WAS CONSTRUCTED DURING THE EARLY 1970'S, REPLACING THE ORIGINAL PRE-WWI FACILITY. STATIONS #02,03, AND 04 EACH CONSIST OF A HOLDER FLANKED BY A PAIR OF 800 KW ELECTRIC MELTERS. THE HOLDER IS RATED AT 85,000 LBS. SHAKER BOXES, LOCATED AT THE REAR OF EACH MELTER SUPPLY THE MIXTURE OF INGREDIENTS REQUIRED FOR EACH PARTICULAR ALLOY. ONE MEMBER OF THE THREE-MAN CASTING TEAMS IS RESPONSIBLE FOR SHAKING METAL INTO THE MELTERS. IN THE LOWER RIGHT ARE SHOWN THE MOLD STORAGE AREA AND THE FURNACE BUILDERS' AREA FOR CHIPPING AND REBRICKING OFF-LINE UNITS. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

  5. VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER STATION IN THE CASTING SHOP. (OTHER UNITS MELT BRASS ALLOYS.) THIS IS THE SOUTHERNMOST FURNACE OF THE FOUR PRESENTLY IN SITU. THE CURRENT CASTING SHOP WAS CONSTRUCTED DURING THE EARLY 1970'S, REPLACING THE ORIGINAL PRE-WWI FACILITY. STATIONS #02, 03, AND 04 EACH CONSIST OF A HOLDER FLANKED BY A PAIR OF 800 KW ELECTRIC MELTERS. THE HOLDER IS REHEATED AT 85,000 LBS. SHAKER BOX, LOCATED AT THE REAR OF EACH MELTER SUPPLY THE MIXTURE OF INGREDIENTS REQUIRED FOR EACH PARTICULAR ALLOY. ONE MEMBER OF THE THREE-MAN CASTING TEAMS IS RESPONSIBLE FOR SHAKING METAL INTO THE MELTERS. IN THE LOWER RIGHT ARE SHOWN THE MOLD STORAGE AREA AND THE FURNACE BUILDERS' AREA FOR CHIPPING AND REBRICKING OFF-LINE UNITS. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

  6. Copolymeric pour-point depressant for diesel fuel

    SciTech Connect

    Ivanov, V.I.; Dadyko, V.A.; Dushechkin, A.P.; Shapkina, L.N.

    1984-03-01

    This article considers the use of a pour-point depressant consisting of a mixture of ethylene with methyl methacrylate (EMMA) and ethylene with vinyl acetate (EVA) to improve the low-temperature indexes of diesel fuels. It is determined that the greatest effect with respect to limiting filterability temperature from the addition of EMMA is achieved with an EVA content of approximately 0.04%. The use of both a copolymer promoting the formation of a large number of crystallization centers (EMMA) and a copolymer that is a good modifier of the wax crystal surface (EVA) leads to a limitation of the crystal growth and preservation of the fine-crystal structure as the fuel temperature is lowered.

  7. Fabrication de transistors monoelectroniques pour la detection de charge

    NASA Astrophysics Data System (ADS)

    Richard, Jean-Philippe

    Le transistor monoelectro'nique (SET) est un candidat que l'on croyait avoir la capacite de remplacer le transistor des circuits integres actuel (MOSFET). Pour des raisons de faible gain en voltage, d'impedance de sortie elevee et de sensibilite aux fluctuations de charges, il est considere aujourd'hui qu'un hybride tirant profit des deux technologies est plus avantageux. En exploitant sa lacune d'etre sensible aux variations de charge, le SET est davantage utilise dans des applications ou la detection de charge s'avere indispensable, notamment dans les domaines de la bio-detection et de l'informatique quantique. Ce memoire presente une etude du transistor monoelectronique utilise en tant que detecteur de charge. La methode de fabrication est basee sur le procede nanodamascene developpe par Dubuc et al. [11] permettant au transistor monoelectronique de fonctionner a temperature ambiante. La temperature d'operation etant intimement liee a la geometrie du SET, la cle du procede nanodamascene reside dans le polissage chimico-mecanique (CMP) permettant de reduire l'epaisseur des SET jusqu'a des valeurs de quelques nanametres. Dans ce projet de maitrise, nous avons cependant opte pour que le SET soit opere a temperature cryogenique. Une faible temperature d'operation permet le relachement des contraintes de dimensions des dispositifs. En considerant les variations de procedes normales pouvant survenir lors de la fabrication, la temperature d'operation maximale calculee en conception s'etend de 27 K a 90 K, soit une energie de charge de 78 meV a 23 meV. Le gain du detecteur de charge etant dependant de la distance de couplage, les resultats de simulations demontrent que cette distance doit etre de 200 nm pour que la detection de charge soit optimale. Les designs concus sont ensuite fabriques sur substrat d'oxyde de silicium. Les resultats de fabrication de SET temoignent de la robustesse du procede nanodamascene. En effet, les dimensions atteintes experimentalement s

  8. Ressources pour les personnes atteintes de démence

    PubMed Central

    Frank, Christopher; Feldman, Sid; Schulz, Mary

    2011-01-01

    Résumé Objectif Résumer les services offerts par la Société Alzheimer et discuter des autres sources de soutien et d’information à la disposition des personnes atteintes de démence. Sources de l’information On a fait une recension dans Ovid MEDLINE à l’aide des expressions dementia, Alzheimer disease, community health services utilization et caregiver stress. Message principal Il a été démontré qu’il est bénéfique aux patients et aux aidants si le diagnostic de la démence est posé tôt dans la maladie. Une consultation auprès de la Société Alzheimer peut aider dans la prise en charge non pharmacologique de la démence au moment du diagnostic et en tout temps durant l’évolution de la maladie. Parmi les services offerts, on peut mentionner des renseignements au sujet de la démence, le soutien aux aidants, la coordination des services communautaires et une grande diversité de ressources écrites à l’intention des patients et des aidants. Là où il est offert, le programme Premier lien peut aider avec l’orientation vers des services en minimisant la nécessité pour les patients ou les aidants de communiquer eux-mêmes avec les filiales locales de la Société. On discute aussi d’autres ressources, y compris les soins de répit et les approches technologiques pour prendre en charge l’errance. Conclusion La Société Alzheimer joue un rôle important dans la prise en charge de la démence et les médecins de famille devraient toujours envisager d’y référer leurs patients au moment du diagnostic, quelle que soit la gravité de l’état. Premier lien, quand il est accessible, peut faciliter le contact avec les services. Des ressources comme les soins de répit et les programmes de jour devraient toujours être considérés lorsqu’ils sont disponibles.

  9. Heat transfer modelling of the saltstone pouring and curing process. Task Number: 93-016-0

    SciTech Connect

    Shadday, M.A. Jr.

    1993-11-01

    A byproduct of the in tank precipitation, ITP, process will be 25 million gallons of low-level salt solution. This salt solution will be mixed with cement and a flyash/slag mixture and solidified in surface vaults in the Z-area Saltstone Facility. The curing process of saltstone involves exothermic reactions, and there is a maximum temperature limit of 90{degree}C for the curing saltstone. If this temperature limit is exceeded, the physical properties of the saltstone can be degraded. A heat transfer model of the saltstone pouring and curing process has been developed that predicts transient temperature distributions in the curing saltstone. The purpose of this model is to predict peak temperatures as functions of the several independent variables in this process: pour temperature, the pour schedule, and seasonal variations in the ambient temperature. The peak temperature of the saltstone is very sensitive to the internal heat generation that accompanies the curing process. Most of the energy is released over a short period of several hours, and the balance is released slowly over a period of time that can be in excess of a month. This long term low level internal heat generation is difficult to measure in laboratory calorimetry tests, and it can significantly influence the peak temperature in the saltstone. Due to the low thermal conductivity of the saltstone, the central region of the poured saltstone will essentially heat up adiabatically. The time dependence of the internal heat generation rate was determined from an analysis of the 1991 pilot pour test. With a pour schedule of eight hours a day and five days a week in the summer, the model predicts that the saltstone will have a peak temperature of 98 C with a pour temperature of 45 C, and a peak temperature of 88 C with a pour temperature of 30 C. With a pour schedule of three days a week, the peak temperature will be 88{degree}C with a pour temperature of 45 C, and 80 C with a pour temperature of 30 C.

  10. INL Wind Farm Project Description Document

    SciTech Connect

    Gary Siefert

    2009-07-01

    The INL Wind Farm project proposes to install a 20 MW to 40 MW wind farm on government property, consisting of approximately ten to twenty full-sized (80-meter hub height) towers with 2 MW turbines, and access roads. This includes identifying the optimal turbine locations, building access roads, and pouring the tower foundations in preparation for turbine installation. The project successfully identified a location on INL lands with commercially viable wind resources (i.e., greater than 11 mph sustained winds) for a 20 to 40 MW wind farm. Additionally, the proposed Wind Farm was evaluated against other General Plant Projects, General Purpose Capital Equipment projects, and Line Item Construction Projects at the INL to show the relative importance of the proposed Wind Farm project.

  11. Refinement of primary Si grains in Al-20%Si alloy slurry through serpentine channel pouring process

    NASA Astrophysics Data System (ADS)

    Zheng, Zhi-kai; Mao, Wei-min; Liu, Zhi-yong; Wang, Dong; Yue, Rui

    2016-05-01

    In this study, a serpentine channel pouring process was used to prepare the semi-solid Al-20%Si alloy slurry and refine primary Si grains in the alloy. The effects of the pouring temperature, number of curves in the serpentine channel, and material of the serpentine channel on the size of primary Si grains in the semi-solid Al-20%Si alloy slurry were investigated. The results showed that the pouring temperature, number of the curves, and material of the channel strongly affected the size and distribution of the primary Si grains. The pouring temperature exerted the strongest effect, followed by the number of the curves and then the material of the channel. Under experimental conditions of a four-curve copper channel and a pouring temperature of 701°C, primary Si grains in the semi-solid Al-20%Si alloy slurry were refined to the greatest extent, and the lath-like grains were changed into granular grains. Moreover, the equivalent grain diameter and the average shape coefficient of primary Si grains in the satisfactory semi-solid Al-20%Si alloy slurry were 24.4 μm and 0.89, respectively. Finally, the refinement mechanism and distribution rule of primary Si grains in the slurry prepared through the serpentine channel pouring process were analyzed and discussed.

  12. Solution saline hypertonique pour la bronchiolite chez les bébés

    PubMed Central

    Grewal, Simran; Goldman, Ran D.

    2015-01-01

    Résumé Question J’ai récemment reçu le rapport du congé de l’hôpital d’un patient de 1 an admis pour une bronchiolite. On y indiquait qu’il avait été traité, entre autres, avec une solution saline hypertonique inhalée. Cette thérapie est-elle recommandée pour les enfants en milieu de soins aigus? Réponse La bronchiolite, causée principalement par le virus respiratoire syncytial, est très commune en hiver. C’est la cause la plus fréquente d’hospitalisation durant l’enfance. Plusieurs bonnes études ont été effectuées au cours de la dernière décennie sur l’utilisation d’une solution saline hypertonique nébulisée pour la prise en charge de la bronchiolite; toutefois, leurs résultats sont conflictuels. Quoiqu’il puisse y avoir un rôle pour la solution saline hypertonique nébulisée chez les enfants hospitalisés pour une bronchiolite pendant plus de 3 jours, ce traitement dans d’autres milieux ne confère pas suffisamment de bienfaits pour recommander son utilisation.

  13. Accuracy of Multiple Pour Cast from Various Elastomer Impression Methods.

    PubMed

    Haralur, Satheesh B; Saad Toman, Majed; Ali Al-Shahrani, Abdullah; Ali Al-Qarni, Abdullah

    2016-01-01

    The accurate duplicate cast obtained from a single impression reduces the profession clinical time, patient inconvenience, and extra material cost. The stainless steel working cast model assembly consisting of two abutments and one pontic area was fabricated. Two sets of six each custom aluminum trays were fabricated, with five mm spacer and two mm spacer. The impression methods evaluated during the study were additional silicone putty reline (two steps), heavy-light body (one step), monophase (one step), and polyether (one step). Type IV gypsum casts were poured at the interval of one hour, 12 hours, 24 hours, and 48 hours. The resultant cast was measured with traveling microscope for the comparative dimensional accuracy. The data obtained were subjected to Analysis of Variance test at significance level <0.05. The die obtained from two-step putty reline impression techniques had the percentage of variation for the height -0.36 to -0.97%, while diameter was increased by 0.40-0.90%. The values for one-step heavy-light body impression dies, additional silicone monophase impressions, and polyether were -0.73 to -1.21%, -1.34%, and -1.46% for the height and 0.50-0.80%, 1.20%, and -1.30% for the width, respectively.

  14. Accuracy of Multiple Pour Cast from Various Elastomer Impression Methods

    PubMed Central

    Saad Toman, Majed; Ali Al-Shahrani, Abdullah; Ali Al-Qarni, Abdullah

    2016-01-01

    The accurate duplicate cast obtained from a single impression reduces the profession clinical time, patient inconvenience, and extra material cost. The stainless steel working cast model assembly consisting of two abutments and one pontic area was fabricated. Two sets of six each custom aluminum trays were fabricated, with five mm spacer and two mm spacer. The impression methods evaluated during the study were additional silicone putty reline (two steps), heavy-light body (one step), monophase (one step), and polyether (one step). Type IV gypsum casts were poured at the interval of one hour, 12 hours, 24 hours, and 48 hours. The resultant cast was measured with traveling microscope for the comparative dimensional accuracy. The data obtained were subjected to Analysis of Variance test at significance level <0.05. The die obtained from two-step putty reline impression techniques had the percentage of variation for the height −0.36 to −0.97%, while diameter was increased by 0.40–0.90%. The values for one-step heavy-light body impression dies, additional silicone monophase impressions, and polyether were −0.73 to −1.21%, −1.34%, and −1.46% for the height and 0.50–0.80%, 1.20%, and −1.30% for the width, respectively. PMID:28096815

  15. Project PRISM: Project Manual.

    ERIC Educational Resources Information Center

    Cunnion, Maryellen; And Others

    The first of three volumes of Project PRISM, a program designed to help classroom teachers (grades 6 through 8) provide for the needs of their gifted and talented students without removing those students from the mainstream of education, outlines the project's background and achievements. Sections review the following project aspects (sample…

  16. Matériaux pour la combustion catalytique

    NASA Astrophysics Data System (ADS)

    Lunot, C.

    2002-04-01

    La combustion catalytique est l'une des technologies les plus prometteuses pour réaliser une combustion ultra-propre des hydrocarbures et notamment du gaz naturel. Aujourd'hui, cependant, les produits commerciaux utilisant cette technologie sont peu nombreux et le plus souvent réservés à des applications basse température (500-700°C) à cause de la limitation liée à la durée de vie des catalyseurs utilisés (métaux précieux). Le développement de cette technologie est donc intimement lié à des défis “matériaux”, et notamment à l'obtention de catalyseurs actifs et durables au moins plusieurs milliers d'heures à des températures comprises entre 700 et 1 100°C. Or les catalyseurs de type métaux précieux, très actifs y compris à basse température, ont une durée de vie (maintien de leur activité catalytique dans le temps) d'autant plus limitée que la température de l'application est élevée. A l'inverse, les catalyseurs de type pérovskite ou hexaaluminate, dont la durée de vie à haute température est satisfaisante, présentent une activité plus faible qui rend notamment l'amorçage de la combustion catalytique délicate. C'est pourquoi les solutions potentielles sont à rechercher non seulement du côté matériaux de catalyseurs mais aussi du côté ingénierie et conception des matériels associés.

  17. Preparation of semi-solid aluminum alloy slurry poured through a water-cooled serpentine channel

    NASA Astrophysics Data System (ADS)

    Chen, Zheng-Zhou; Mao, Wei-Min; Wu, Zong-Chuang

    2012-01-01

    A water-cooled serpentine channel pouring process was invented to produce semi-solid A356 aluminum alloy slurry for rheocasting, and the effects of pouring temperature and circulating cooling water flux on the microstructure of the slurry were investigated. The results show that at the pouring temperature of 640-680°C and the circulating cooling water flux of 0.9 m3/h, the semi-solid A356 aluminum alloy slurry with spherical primary α(Al) grains can be obtained, whose shape factors are between 0.78 and 0.86 and the grain diameter can reach 48-68 μm. When the pouring temperatures are at 660-680°C, only a very thin solidified shell remains inside the serpentine channel and can be removed easily. When the serpentine channel is cooled with circulating water, the microstructure of the semi-solid slurry can be improved, and the serpentine channel is quickly cooled to room temperature after the completion of one pouring. In terms of the productivity of the special equipment, the water-cooled serpentine channel is economical and efficient.

  18. Dispositifs semi-conducteurs pour biodetection photonique et imagerie hyperspectrale

    NASA Astrophysics Data System (ADS)

    Lepage, Dominic

    La creation d'un microsysteme d'analyse biochimique, capable de livrer des diagnostics preliminaires sur la quantification d'elements pathogenes, est un defi multidisciplinaire ayant un impact potentiel important sur la majorite des activites humaines en sante et securite. En effet, un dispositif integre, peu dispendieux et livrant des resultats facilement interpretables, permettrait une vulgarisation des capacites de biodetection a travers differents domaines d'applications societaires et industriels. Le present document se concentre sur l'integration monolithique d'une methode de biocaracterisation dans le but de generer un transducteur miniaturise et efficace, element central d'un microsysteme de detection. Le projet de recherche ici presente vise l'etude de l'applicabilite d'un capteur plasmonique integre par l'entremise de nanostructures semi-conductrices aux proprietes quantiques et luminescentes. L'approche presentee est globale; c'est-a-dire qu'on vise a repondre aux questions fondamentales impliquant la comprehension des phenomenes photoniques, le developpement et la fabrication des dispositifs, les methodes de caracterisations possibles ainsi que l'application d'un transducteur SPR integre a la biodetection. En d'autres termes : dans quelles circonstances et comment un transducteur plasmonique integre doit-il etre realise pour l'application a la detection delocalisee d'elements pathogenes? Dans le but d'engendrer un instrument simple a l'echelle de l'usager, l'integration de la connaissance a l'echelle du design est donc effectuee. Ainsi, des capteurs plasmoniques monolithiques sont concus a l'aide de modeles theoriques ici presentes. Un instrument de mesure hyperspectrale conjuguee permettant de cartographier directement la relation de dispersion des plasmons diffractes a ete construit et teste. Cet instrument est employe a la cartographie d'elements de diffusion. Finalement, une demonstration du fonctionnement du dispositif, appliquee a la

  19. Spectroscopie pompe-sonde pour la détection de bioaérosols

    NASA Astrophysics Data System (ADS)

    Guyon, L.; Courvoisier, F.; Wood, V.; Boutou, V.; Bartelt, A.; Roth, M.; Rabitz, H.; Wolf, J. P.

    2006-10-01

    La fluorescence du Tryptophane excité par une impulsion ultra-brève à 270 nm peut être diminuée d'un facteur deux par une seconde impulsion à 800 nm, à l'aide d'un dispositif pompe-sonde. Cette décroissance est aussi observée pour les bactéries vivantes, dont le Tryptophane est l'un des fluorophores, tandis qu'aucune décroissance n'est observée pour d'autres molécules organiques comme le naphtalène ou le gazole, malgré des spectres d'absorption et de fluorescence similaires. Cette différence remarquable est très prometteuse pour la distinction d'aérosols biologiques et organiques.

  20. Miroirs multicouches C/SI a incidence normale pour la region spectrale 25-40 nanometres

    NASA Astrophysics Data System (ADS)

    Grigonis, Marius

    Nous avons propose la nouvelle combinaison de materiaux, C/Si, pour la fabrication de miroirs multicouches a incidence normale dans la region spectrale 25-40 nm. Les resultats experimentaux montrent que cette combinaison possede une reflectivite d'environ ~25% dans la region spectrale 25-33 nm et une reflectivite d'environ ~23% dans la region spectrale 33-40 nm. Ces valeurs de reflectivite sont les plus grandes obtenues jusqu'a maintenant dans la region spectrale 25-40 nm. Les miroirs multicouches ont ete par la suite caracterises par microscopie electronique a transmission, par diverses techniques de diffraction des rayons X et par spectroscopies d'electrons AES et ESCA. La resistance des miroirs aux temperatures elevees a ete egalement etudiee. Les resultats fournis par les methodes de caracterisation indiquent que cette combinaison possede des caracteristiques tres prometteuses pour son application comme miroir pour les rayons X mous.

  1. Analysis Of The Sludge Batch 7b (Macrobatch 9) DWPF Pour Stream Glass Sample

    SciTech Connect

    Johnson, F. C.; Crawford, C. L.; Pareizs, J. M.

    2013-11-18

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 7b (SB7b), also referred to as Macrobatch 9 (MB9), in January 2012. SB7b is a blend of the heel of Tank 40 from Sludge Batch 7a (SB7a) and the SB7b material that was transferred to Tank 40 from Tank 51. SB7b was processed using Frit 418. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program (GPCP), which is governed by the DWPF Waste Form Compliance Plan, and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. Two pour stream glass samples were collected while processing SB7b. The samples were transferred to the Savannah River National Laboratory (SRNL) where one was analyzed and the other was archived. The following conclusions were drawn from the analytical results provided in this report: The sum of oxides for the official SB7b pour stream glass is within the Product Composition Control System (PCCS) limits (95-105 wt%); The average calculated Waste Dilution Factor (WDF) for SB7b is 2.3. In general, the measured radionuclide content of the official SB7b pour stream glass is in good agreement with the calculated values from the Tank 40 dried sludge results from the SB7b Waste Acceptance Program Specification (WAPS) sample; As in previous pour stream samples, ruthenium and rhodium inclusions were detected by Scanning Electron Microscopy-Electron Dispersive Spectroscopy (SEM-EDS) in the SB7b pour stream sample; The Product Consistency Test (PCT) results indicate that the official SB7b pour stream glass meets the waste acceptance criteria for durability with a normalized boron release of 0.8 g/L, which is an order of magnitude less than the Environmental Assessment (EA) glass; The measured density of the SB7b pour stream glass was 2.70 g/cm{sup 3}; The Fe{sup 2+}/ΣFe ratio of the SB7b pour stream samples was 0.07.

  2. Is the Glass Half Full or Half Empty? How to Reverse the Effect of Glass Elongation on the Volume Poured

    PubMed Central

    Caljouw, Simone R.; van Wijck, Ruud

    2014-01-01

    To reduce the volume of drinks and the risk of overconsumption, health professionals recommend the use of tall skinny instead of short wide glasses. Yet the results of the present study contradict this health advice. Participants who generously filled up a glass with lemonade served 9% more in tall narrow compared with short wide glasses (p<0.05). In addition, when pouring a small amount (i.e., a shot), participants poured 3% more in a short wide than in a tall narrow glass (p<0.05). Elongation may bias the perceived volume that is poured but also the perceived volume of the free space in the glass. We hypothesised that shifting attention from the bottom to the brim of the glass when filling it close to capacity might reverse the glass elongation effect on the quantity poured. This hypothesis was tested, by investigating two pouring tasks that differed in the required focus of attention. When the instruction was to match a reference volume, participants poured more liquid in the short wide compared with the tall narrow glass (p<0.05). The effect of glass elongation on poured volume was the opposite when the instruction was to leave space in the glasses for the reference volume. It seems likely that task and individual factors affect the pourer's viewing strategy and thus may determine the direction of the glass elongation effect on the volume poured. PMID:25343252

  3. Partners in Quality: Infrastructure = Partenaires pour la qualite: Infrastructure.

    ERIC Educational Resources Information Center

    Kaiser, Barbara; Rasminsky, Judy Sklar

    Partners in Quality is a research and development project sponsored by the Canadian Child Care Federation and its affiliates to explore how child care providers, parents, and other partners can work together to support and improve quality in child care. This booklet, in both English and French, is the third in a series to support child care…

  4. Partners in Quality: Communities = Partenaires pour la qualite: Collectivites.

    ERIC Educational Resources Information Center

    Kaiser, Barbara; Rasminsky, Judy Sklar

    Partners in Quality is a research and development project sponsored by the Canadian Child Care Federation and its affiliates to explore how child care providers, parents, and other partners can work together to support and improve quality in child care. This booklet, in both English and French, is the fourth in a series to support child care…

  5. Partners in Quality: Facilitator's Guide = Partenaires Pour la Qualite.

    ERIC Educational Resources Information Center

    Beckman, Sandra

    Partners in Quality is a research and development project sponsored by the Canadian Child Care Federation and its affiliates to explore how child care providers, parents, and other partners can work together to support and improve quality in child care. This facilitator's guide is designed to help facilitators prepare and deliver workshops based…

  6. Mode-bifurcation upon pouring water into a cup that depends on the shape of the cup

    NASA Astrophysics Data System (ADS)

    Nakata, Satoshi; Yamada, Akiko; Kitahata, Hiroyuki

    2005-05-01

    Mode-bifurcation that included hysteresis was investigated when water was poured into a cup via a water faucet. Three modes, i.e., accumulation flow (mode I), scattering flow (mode II), and open and shut oscillatory flow (mode III), could be produced by laterally changing the distance between the center of the cup and the landing point of water poured at a constant flow rate. Hysteresis in mode-bifurcation was observed when the distance was changed depending on the initial location of the water poured into the cup. Pendulum flow was also observed when water was poured into a shallow cell. The essential features of this mode-switching were reproduced by a numerical calculation as a function of the landing point of the poured water using two-variable (the size of the water hollow and the pressure on the water surface) differential equations that included the nature of reversed flow.

  7. EVALUATION OF THE IMPACT OF THIN POURS ON SALTSTONE PROPERTIES

    SciTech Connect

    Cozzi, A.; Langton, C.; Fox, K.

    2012-10-02

    The proposed Saltstone Disposal Unit 6 (SDU6) is a larger structure than the SDU4 cells and larger than the disposal units (SDU2, SDU3, and SDU5) currently in use or under construction. The additional capacity provided by SDU6 is desired to reduce life cycle costs and support site accelerated closure goals. The larger size of the planned SDU6 could result in saltstone being placed in thinner lifts as the unit is filled. This study was performed to determine whether thinner layers of saltstone negatively impact the performance of the waste form. A larger number of cold joints could potentially result in increased drying, salt deposition, and surface oxidation. A matrix of samples was prepared to simulate thin pours ranging from 0.5 to 6 inches thick. Each sample was cured for at least 28 days prior to further characterization. Leachability results showed that there is no obvious impact of the number of grout layers on the Leachability Index values for Na and NO{sub 3}. The concentrations of Cr, NO{sub 2}, and C{sub 2}O{sub 4} were below detection limits for all of the leachates. No attempt was made to evaluate the oxidation of these samples since no measureable Cr was leached, although this would appear to indicate that Cr in the samples remained reduced for cold joints with surfaces exposed for approximately four days. The results of hydraulic conductivity measurements showed that the number of cold joints in the samples did not have a significant impact on the measured values for the vertical lift orientation (i.e., when the flow path is perpendicular to the cold joints). For the horizontal lift orientation (i.e., when the flow path is parallel to the cold joints), the number of cold joints in the samples also did not appear to have a significant impact on hydraulic conductivity. The measured hydraulic conductivity was faster when the flow path was parallel to the cold joints as compared to when the flow path was perpendicular to the cold joints. Percolation

  8. Project Notes

    ERIC Educational Resources Information Center

    School Science Review, 1978

    1978-01-01

    Presents sixteen project notes developed by pupils of Chipping Norton School and Bristol Grammar School, in the United Kingdom. These Projects include eight biology A-level projects and eight Chemistry A-level projects. (HM)

  9. Quantitative Microbial Risk Assessment Tutorial: Pour Point Analysis of Land-applied Microbial Loadings and Comparison of Simulated and Gaging Station Results

    EPA Science Inventory

    This tutorial demonstrates a pour point analysis • Initiates execution of the SDMPB.• Navigates the SDMPB.• Chooses a pour point within a watershed, delineates the sub-area that contributes to that pour point, and collects data for it.• Considers land applicat...

  10. Prediction du transfert thermique parietal pour la chambre de combustion d'une turbine a gaz

    NASA Astrophysics Data System (ADS)

    Gosselin, Pierre

    Des travaux ont demontre que la temperature de paroi pouvait etre predite avec precision (+/-6 a 10%) pour une chambre de combustion a pleine-echelle. Pour les resultats obtenus d'une autre chambre, aussi identique mais de plus petit diametre, la prediction de temperature de paroi n'offrait pas la meme precision de calcul. Cette etude est limitee aux turbines aeronautiques. L'objectif a ete de reevaluer globalement la prediction de la temperature de paroi d'une chambre de combustion de type GHOST a la lumiere des resultats obtenus des programmes experimentaux, tout en prenant en consideration l'influence des differents types de carburants. Par l'analyse du grand nombre de donnees experimentales, des modifications furent apportees a la methode de prediction utilisee pour les chambres a pleine echelle afin de reduire l'erreur de prediction pour les echelles a 1:2 (basse pression), 1:3 (basse pression) et 1:3 (haute pression). Une modelisation de la chambre de combustion a ete effectuee. L'analyse numerique nous a demontree que le code FLUENT/UNS predisait tres bien l'ecoulement a froid a l'interieur de la chambre de combustion GHOST echelle 1:1. La prediction etait acceptable au niveau des profils de temperature a l'interieur de la chambre. Cependant, une lacune a ete observee au niveau du modele d'evaporation du code.

  11. Salicylate de bismuth pour la diarrhée chez l’enfant

    PubMed Central

    Goldman, Ran D.

    2013-01-01

    Résumé Question J’ai reçu récemment un patient de 5 ans à qui, lors d’un voyage en Amérique du Sud, un médecin de famille local a prescrit du sous-salicylate de bismuth pour une diarrhée. Est-ce une pratique que nous devrions encourager? Réponse La recherche réalisée dans les pays en développement a fait valoir que l’utilisation du sous-salicylate de bismuth était efficace pour raccourcir la durée de la diarrhée. En dépit de ces constatations, son efficacité limitée, des préoccupations à propos du fait qu’il pourrait potentiellement causer le syndrome de Reye, les problèmes d’observance et son coût sont les principales raisons pour lesquelles on ne le recommande pas systématiquement pour les enfants.

  12. Matériaux pour la production d'hydrogène

    NASA Astrophysics Data System (ADS)

    Saint-Just, J.

    2002-04-01

    L'émergence des piles à combustible et l'apparition de l'hydrogène comme carburant dans des véhicules grand public comme les autobus, suscitent un élan fort pour la mise au point de technologies nouvelles pour la production d'hydrogène décentralisée et à petite échelle. Du fait de sa richesse en hydrogène. des réserves disponibles et de son infrastructure de distribution, le gaz naturel est considéré comme la ressource majeure pouvant fournir les quantités d'hydrogène nécessaires pour un passage progressif vers une économie de l'hydrogène dans les décennies immédiates en attendant que progressivement les énergies renouvelables prennent le relais. Des solutions innovantes, incluant de nouveaux matériaux, sont nécessaires pour la mise au point des petits générateurs d'hydrogène efficaces et bon marché alimenté au gaz naturel qui sont attendus par les fabricants (le piles à combustible, les acteurs de l'énergie et les fabricants de véhicules.

  13. Evaluation of a Pour-Through Water Treatment Device for Use as Microbiological Purifier

    EPA Science Inventory

    The United States Environmental Protection Agency (EPA) Office of Research and Development has evaluated the performance of a Point-of-Use (POU) pour-through device designed for use in India, developing and emerging market (D&E) countries, and under emergency situations in the Un...

  14. [Reconstruction of a fire homicide after pouring denatured alcohol on the victim].

    PubMed

    Bohnert, Michael; Lehmann, Rainer; Simon, Karl-Heinz; Wehner, Frank

    2009-01-01

    A 48-year-old man died from extensive burns suffered especially on the upper part of the body during a dispute with his ex-wife, who had poured spirit or a spirit-water mixture over him. For initially unknown reasons, the man's clothing caught fire. Whereas the public prosecutor assumed that the woman had intentionally poured a larger amount of spirit over her ex-husband before setting fire to him, the defendant first claimed to have poured the rest of a water-spirit mixture left over from cleaning the windows over the man and that his clothing caught fire on lighting a cigarette. To clarify the course of events, fire tests with spirit in various dilutions were conducted, which showed that even with undiluted spirit a direct contact with the flame of at least 1 second is necessary to start a fire. There is no deflagration, if spirit is used as a fire accelerant. In the trial, the defendant made a confession and admitted to have poured a mixture of 75% spirit and 25% water over her ex-husband and set fire to his right sleeve with the intention to kill him.

  15. Numerical simulation of multi-mini-pot pouring process of a 13-ton steel ingot

    NASA Astrophysics Data System (ADS)

    Li, Jun; Ge, Honghao; Wang, Bin; Wu, Menghuai; Li, Jianguo

    2015-06-01

    Heavy ingots up to several hundred tons for power plant forgings exhibit large scale grain size and morphology differences, which are harmful to the design of forging parameters, and severe macrosegregation, which could not be eliminated during the subsequent forging and heat treatment processing. To cast these ingots with more homogeneity, a multi-mini-pot (MMP) poring technique is proposed, in which liquid metal is poured by multi-mini-pot (MMP) with intermission between each pot and solidification occurs step by step. In this paper, we are focus on the prediction of macrosegregation in MMP pouring process. A three-phase model is employed to study the MMP pouring process for a 13-ton heavy ingot. The main features of this three-phases model in such a heavy ingot can be quantitatively modelled: growth of columnar dendrite trunks; nucleation, growth and sedimentation of equiaxed crystals; thermosolutal convection of the melt; solute transport by both convection and crystal sedimentation; and the columnar-to-equiaxed transition (CET). The results shown that the MMP pouring technique tend to decrease the macrosegregation significantly by compared with the conventional method.

  16. Coprological evaluation of pour-on and injectable formulation of moxidectin in beef cattle

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Two, 28 day(d) studies were conducted with naturally infected beef calves to assess the effect of allo-grooming behavior on fecal egg count (FEG)reductions and coproculture counts following treatment with pour-on or injectable moxidectin. The first study was conducted at the USDA Southern Plains Ex...

  17. Transformation a Echelle Fixe et Groupe de Renormalisation pour les Objets Fractals et Multifractals

    NASA Astrophysics Data System (ADS)

    Tremblay, Real

    Dans un premier temps, la description mathematique des fractals et des multifractais est resumee. Une description de quelques-uns des principaux systemes ou apparaissent des spectres d'exposants multifractals est presentee. L'accent est mis sur deux archetypes, le modele de percolation et le modele de rupture dielectrique. Un modele original de cascade multifractale avec interactions inspire des modeles phenomenologiques de la turbulence est presente et son spectre d'exposants calcule analytiquement. Ce travail elargit la classe de modeles pour lesquels on connait le spectre d'exposants exactement. Dans la seconde partie, on trouve une analyse critique de la transformation a echelle fixe. Sont discutees plus particulierement les proprietes que doivent posseder les diagrammes de base pour obtenir une transformation invariante d'echelle. Les differentes hypotheses arbitraires de la theorie sont mises en evidence. L'une de ces hypotheses concerne le traitement auto-coherent des conditions aux frontieres. Considerant cette hypothese comme valable, la theorie utilise la distribution de trous dans un ensemble de Cantor aleatoire. Un calcul exact de cette distribution est donne ici. Enfin, en troisieme et dernier lieu, on retrouve une analyse exhaustive du probleme du crossover dans le modele de percolation avec une resistance non-nulle pour les liens normalement isolants. A l'aide du groupe de renormalisation de Migdal-Kadanoff, on montre qu'il existe un seul exposant de crossover et une seule longueur de coherence. D'autres longueurs de correlation peuvent etre definies, mais elles demeurent dans un rapport fixe le long des axes propres du groupe de renormalisation. La multifractalite est donc, pour ce modele et ceux qui peuvent etre formules de facon analogue, compatible avec l'existence d'une seule longueur de coherence. Ces resultats sont d'application directe pour les proprietes electriques des milieux desordonnes.

  18. Projects Work!

    ERIC Educational Resources Information Center

    Textor, Martin R.

    2005-01-01

    The great educational value of projects is emphasized by contrasting negative aspects of the life of today's children with the goals of project work. This is illustrated by a project "Shopping." It is shown what children are learning in such projects and what the advantages of project work are. Relevant topic areas, criteria for selecting a…

  19. Project Wild (Project Tame).

    ERIC Educational Resources Information Center

    Siegenthaler, David

    For 37 states in the United States, Project Wild has become an officially sanctioned, distributed and funded "environemtnal and conservation education program." For those who are striving to implement focused, sequential, learning programs, as well as those who wish to promote harmony through a non-anthropocentric world view, Project…

  20. ANALYSIS OF DWPF SLUDGE BATCH 6 (MACROBATCH 7) POUR STREAM GLASS SAMPLES

    SciTech Connect

    Johnson, F.

    2012-01-20

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 6 (SB6), also referred to as Macrobatch 7 (MB7), in June 2010. SB6 is a blend of the heel of Tank 40 from Sludge Batch 5 (SB5), H-Canyon Np transfers and SB6 that was transferred to Tank 40 from Tank 51.1 SB6 was processed using Frit 418. Sludge is received into the DWPF Chemical Processing Cell (CPC) and is processed through the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator Tank (SME). The treated sludge slurry is then transferred to the Melter Feed Tank (MFT) and fed to the melter. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program (GPCP) and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. The DWPF requested various analyses of radioactive glass samples obtained from the melter pour stream during processing of SB6 as well as reduction/oxidation (REDOX) analysis of MFT samples to determine the impact of Argon bubbling. Sample analysis followed the Task Technical and Quality Assurance Plan (TTQAP) and an Analytical Study Plan (ASP). Four Pour Stream (PS) glass samples and two MFT slurry samples were delivered to the Savannah River National Laboratory (SRNL) from the DWPF. Table 1-1 lists the sample information for each pour stream glass sample. SB6 PS3 (S03472) was selected as the official pour stream sample for SB6 and full analysis was requested. This report details the visual observations of the as-received SB6 PS No.3 glass sample as well as results for the chemical composition, Product Consistency Test (PCT), radionuclide content, noble metals, and glass density. REDOX results will be provided for all four pour stream samples and vitrified samples of MFT-558 and MFT-568A. Where appropriate, data from other pour stream samples will be provided.

  1. Effects of pouring temperature and slurry viscosity on heat transfer and surface roughness in lost foam casting

    NASA Astrophysics Data System (ADS)

    Shayganpour, A.; Idris, M. H.; Izman, S.; Farahany, S.

    2012-06-01

    The effects of pouring temperature and slurry viscosity in terms of heat transfer on surface roughness during lost foam casting (LFC) of LM6 alloy were investigated experimentally. Heat transfer of molten materials is an important factors to changes the microstructure which is considered in the present study. It is primarily dependent on the pouring temperature, casting thickness, mould material, mould temperature and surrounding medium. The pouring temperature changed from 700 to740°C and slurry viscosity altered from 20 to 36 sec. A full 2-level factorial design experimental technique was used to identify the significant factors that effect on surface roughness of castings. The results show that surface roughness improved by lower pouring temperature, whereas slurry viscosity has less influence on the quality of surface.

  2. Numerical Study of Impingement Location of Liquid Jet Poured from a Tilting Ladle with Lip Spout

    NASA Astrophysics Data System (ADS)

    Castilla, R.; Gamez-Montero, P. J.; Raush, G.; Khamashta, M.; Codina, E.

    2017-04-01

    A new approach for simulating liquid poured from a tilting lip spout is presented, using neither a dynamic mesh nor the moving solid solution method. In this case only the tilting ladle is moving, so we propose to rotate the gravitational acceleration at an angular velocity prescribed by a geometrical and dynamical calculation to keep the poured flow rate constant. This angular velocity is applied to modify the orientation of the gravity vector in computational fluid dynamics (CFD) simulations using the OpenFOAM® toolbox. Also, fictitious forces are considered. The modified solver is used to calculate the impingement location for six spout geometries and compare the jet dispersion there. This method could offer an inexpensive tool to calculate optimal spout geometries to reduce sprue size in the metal casting industry.

  3. Effect of Storage Time of Extended-Pour and Conventional Alginate Impressions on Dimensional Accuracy of Casts

    PubMed Central

    Rohanian, Ahmad; Ommati Shabestari, Ghasem; Zeighami, Somayeh; Samadi, Mohammad Javad; Shamshiri, Ahmad Reza

    2014-01-01

    Objectives: Some manufacturers claim to have produced new irreversible hydro-colloids that are able to maintain their dimensional stability during storage. The present study evaluated the effect of storage time on dimensional stability of three alginates: Hydrogum 5, Tropicalgin and Alginoplast. Materials and Methods: In this experimental in-vitro trial, a total of 90 alginate impressions were made from a Dentoform model using Hydrogum 5, Tropicalgin and Alginoplast alginates. The impressions were stored in a sealed plastic bag without a damp paper towel for 0, 24, 48, 72 and 120 hours and then poured with type III dental stone. Cross-arch (facial of 6 to facial of 6 on the opposite side) and antero-posterior (distal of right first molar to the ipsilateral central incisor) measurements were made with a digital caliper on the casts. Data were analyzed by two-way and one-way ANOVA and Tukey’s post-hoc test (P<0.05). Results: Alginate type and the pouring time significantly affected the dimensional stability of alginate impressions (both Ps<0.001). Pouring of Hydrogum 5 impressions can be delayed for up to 120 hours without significant dimensional changes. Alginoplast impressions may be poured after 72 hours, but Tropicalgin should be poured immediately and the storage time should not be more than 24 hours. Conclusion: Immediate pouring of alginate impressions provides the highest accuracy in reproducing the teeth and adjacent tissues; however, this study demonstrated that pouring may be delayed for up to five days using extended-pour (Hydrogum 5) alginates. PMID:25628695

  4. A new portable vibrator for plaster pouring: effect on the marginal fit at cylinder-abutment

    PubMed Central

    de ANDRADE, Pâmela Cândida Aires Ribas; LUTHI, Leonardo Flores; STANLEY, Kyle; CARDOSO, Antônio Carlos

    2012-01-01

    Objective The aim of this study was to test a new portable vibrator for plaster pouring (developed for this purpose), comparing the effect of its use on the accuracy of working cast of implant-supported restorations to the conventional vibrator. Material and methods From a master cast with 2 implants, 30 transfer moldings were made randomly and divided into three groups: Group I (GI): pouring performed in an outsourced dental laboratory with conventional plaster vibrator (10 casts), Group II (GII): pouring performed in the laboratory of the Federal University of Santa Catarina (UFSC) with conventional plaster vibrator (10 casts) and Group III (GIII): pouring performed with the portable vibrator fabricated for this study (10 casts). The position of the analogue and marginal adaptation of the infrastructure were verified by testing the single screw on the master model and on the working model. The measurement of misfit was blindly performed with a precision microscope and analyzing unit, Quadra-Check 200. The data were statistically analyzed by analysis of variance (ANOVA) and the Holm-Sidak test (α=0.05). Results Means±standard deviations were as follows: GI: 19.19±4.73 µm; GII: 21.72±5.41 µm; GIII: 13.5±2.39 µm (P<0.05), with GIII significantly lower as compared to the other groups. Conclusion Within the limitations of this study, it was concluded that a greater accuracy of working cast was achieved when a portable vibrator was used for casting molds. PMID:23138736

  5. Accuracy of Gypsum Casts after Different Impression Techniques and Double Pouring

    PubMed Central

    Silva, Stephania Caroline Rodolfo; Messias, Aion Mangino; Abi-Rached, Filipe de Oliveira; de Souza, Raphael Freitas; Reis, José Maurício dos Santos Nunes

    2016-01-01

    This study evaluated the accuracy of gypsum casts after different impression techniques and double pouring. Ten patients were selected and for each one it was obtained 5 partial putty/wash impressions with vinyl polysiloxane (VPS) material from teeth #13 to #16 with partial metal stock trays. The following techniques were performed: (1) one-step; two-step relief with: (2) PVC film; (3) slow-speed tungsten carbide bur and scalpel blade, (4) small movements of the tray and (5) without relief—negative control. The impressions were disinfected with 0.5% sodium hypochlorite for 10 minutes and stored during 110 and 230 minutes for the first and second pouring, respectively, with type IV gypsum. Three intra-oral lateral photographs of each patient were taken using a tripod and a customized radiographic positioner. The images were imported into ImageJ software and the total area of the buccal surface from teeth #13 to #16 was measured. A 4.0% coefficient of variance was criterion for using these measurements as Baseline values. The casts were photographed and analyzed using the same standardization for the clinical images. The area (mm2) obtained from the difference between the measurements of each gypsum cast and the Baseline value of the respective patient were calculated and analyzed by repeated-measures two way-ANOVA and Mauchly’s Sphericity test (α = 0.05). No significant effect was observed for Impression technique (P = 0.23), Second pouring (P = 0.99) and their interaction (P = 0.25). The impression techniques and double pouring did not influence the accuracy of the gypsum casts. PMID:27736967

  6. Accuracy of Gypsum Casts after Different Impression Techniques and Double Pouring.

    PubMed

    Silva, Stephania Caroline Rodolfo; Messias, Aion Mangino; Abi-Rached, Filipe de Oliveira; de Souza, Raphael Freitas; Reis, José Maurício Dos Santos Nunes

    2016-01-01

    This study evaluated the accuracy of gypsum casts after different impression techniques and double pouring. Ten patients were selected and for each one it was obtained 5 partial putty/wash impressions with vinyl polysiloxane (VPS) material from teeth #13 to #16 with partial metal stock trays. The following techniques were performed: (1) one-step; two-step relief with: (2) PVC film; (3) slow-speed tungsten carbide bur and scalpel blade, (4) small movements of the tray and (5) without relief-negative control. The impressions were disinfected with 0.5% sodium hypochlorite for 10 minutes and stored during 110 and 230 minutes for the first and second pouring, respectively, with type IV gypsum. Three intra-oral lateral photographs of each patient were taken using a tripod and a customized radiographic positioner. The images were imported into ImageJ software and the total area of the buccal surface from teeth #13 to #16 was measured. A 4.0% coefficient of variance was criterion for using these measurements as Baseline values. The casts were photographed and analyzed using the same standardization for the clinical images. The area (mm2) obtained from the difference between the measurements of each gypsum cast and the Baseline value of the respective patient were calculated and analyzed by repeated-measures two way-ANOVA and Mauchly's Sphericity test (α = 0.05). No significant effect was observed for Impression technique (P = 0.23), Second pouring (P = 0.99) and their interaction (P = 0.25). The impression techniques and double pouring did not influence the accuracy of the gypsum casts.

  7. Methodologies nouvelles pour la realisation d'essais dans la soufflerie Price-Paidoussis

    NASA Astrophysics Data System (ADS)

    Flores Salinas, Manuel

    Le present memoire en genie de la production automatisee vise a decrire le travail effectue dans la soufflerie Price-Paidoussis du laboratoire LARCASE pour trouver les methodologies experimentales et les procedures de tests, qui seront utilisees avec les modeles d'ailes actuellement au laboratoire. Les methodologies et procedures presentees ici vont permettre de preparer les tests en soufflerie du projet MDO-505 Architectures et technologies deformables pour l'amelioration des performances des ailes, qui se derouleront durant l'annee 2015. D'abord, un bref historique des souffleries subsoniques sera fait. Les differentes sections de la soufflerie Price-Paidoussis seront decrites en mettant l'emphase sur leur influence dans la qualite de l'ecoulement qui se retrouve dans la chambre d'essai. Ensuite, une introduction a la pression, a sa mesure lors de tests en soufflerie et les instruments utilises pour les tests en soufflerie au laboratoire LARCASE sera presente, en particulier le capteur piezoelectrique XCQ-062. Une attention particuliere sera portee au mode de fonctionnement, a son installation, a la mesure et a la detection des frequences et aux sources d'erreurs lorsqu'on utilise des capteurs de haute precision comme la serie XCQ-062 du fournisseur Kulite. Finalement, les procedures et les methodologies elaborees pour les tests dans la soufflerie Price-Paidoussis seront utilisees sur quatre types d'ailes differentes. L'article New methodology for wind tunnel calibration using neural networks - EGD approch portant sur une nouvelle facon de predire les caracteristiques de l'ecoulement a l'interieur de la soufflerie Price-Paidoussis se trouve dans l'annexe 2 de ce document. Cet article porte sur la creation d'un reseau de neurones multicouche et sur l'entrainement des neurones, Ensuite, une comparaison des resultats du reseau de neurones a ete fait avec des valeurs simules avec le logiciel Fluent.

  8. Investigation of the Pour Point Depression Ability of Polyalkyl Acrylate Additives After Sonication

    NASA Astrophysics Data System (ADS)

    Volkova, G. I.; Anufriev, R. V.; Yudina, N. V.; Tchaikovskaya, O. N.

    2016-12-01

    Effect of ultrasonic treatment on the molecular parameters of polymeric additives based on polyalkyl acrylate is investigated. The viscosity, temperature, and energy characteristics of high-wax crude oil and solutions of petroleum wax in decane and aviation fuel TS-1 in the presence of initial and ultrasonified additives are determined. Results obtained indicate that the pour point depression ability of the additives is not reduced after treatment in an ultrasonic field.

  9. SPERTI Reactor Pit Building (PER605) under construction. Poured concrete foundation ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    SPERT-I Reactor Pit Building (PER-605) under construction. Poured concrete foundation will enclosure a "Pit" into which the reactor vessel will be placed. Steel framework has been erected. To left of view is instrument cell (PER-606), constructed of concrete block. Photographer: R.G. Larsen. Date: April 22, 1955. INEEL negative no. 55-1000 - Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility Area, Scoville, Butte County, ID

  10. Un accumulateur echangeur de chaleur hybride pour la gestion simultanee des energies solaire et electrique

    NASA Astrophysics Data System (ADS)

    Ait Hammou, Zouhair

    Cette etude porte sur la conception d'un accumulateur echangeur de chaleur hybride (AECH) pour la gestion simultanee des energies solaire et electrique. Un modele mathematique reposant sur les equations de conservation de la quantite d'energie est expose. Il est developpe pour tester differents materiaux de stockage, entre autres, les materiaux a changement de phase (solide/liquide) et les materiaux de stockage sensible. Un code de calcul est mis en eeuvre sur ordinateur, puis valide a l'aide des resultats analytiques et numeriques de la litterature. En parallele, un prototype experimental a echelle reduite est concu au laboratoire afin de valider le code de calcul. Des simulations sont effectuees pour etudier les effets des parametres de conception et des materiaux de stockage sur le comportement thermique de l'AECH et sur la consommation d'energie electrique. Les resultats des simulations sur quatre mois d'hiver montrent que la paraffine n-octadecane et l'acide caprique sont deux candidats souhaitables pour le stockage d'energie destine au chauffage des habitats. L'utilisation de ces deux materiaux dans l'AECH permet de reduire la consommation d'energie electrique de 32% et d'aplanir le probleme de pointe electrique puisque 90% de l'energie electrique est consommee durant les heures creuses. En plus, en adoptant un tarif preferentiel, le calcul des couts lies a la consommation d'energie electrique montre que le consommateur adoptant ce systeme beneficie d'une reduction de 50% de la facture d'electricite.

  11. The Impact of 25 Television Programs on "Water" Produced and Broadcast by the Ivorian Out-of-School Education Project.

    ERIC Educational Resources Information Center

    Lenglet, Frans

    The study described evaluated the reach and impact of 25 Tele Pour Tous Television for Everybody) programs on water and related issues which were broadcast by the Ivorian Out of School Television (OSTV) project in April-December 1975. This report discusses the relevance of the topic as a theme for an adult education TV program series, describes…

  12. Instrumentation pour la spectroscopie laser sur faisceau d'ions rapides

    NASA Astrophysics Data System (ADS)

    Bazin, Marc

    Devant l'emergence des technologies exploitant l'infiniment petit, la spectroscopie atomique et moleculaire devient de plus en plus incontournable pour comprendre precisement les mecanismes quantiques impliques dans l'interaction des molecules. C'est le cas notamment de la nanotechnologie, de la dynamique reactionnelle des gaz a effet de serre ou simplement de l'identification des molecules constituant certains objets de l'astrophysique. Bien qu'un travail considerable soit deja accompli pour comprendre la dissociation ou la formation des molecules simples, il reste a vaincre la complexite des mecanismes impliques lorsque les molecules possedent plus de trois noyaux. Parmi les rares techniques de spectroscopie a tres haute resolution (jusqu'a la structure hyperfine), la spectroscopie laser sur faisceaux d'ions rapides est une methode experimentale eprouvee depuis trois decennies environ. Cette methode spectroscopique fournit des resultats comptant parmi les meilleurs pour obtenir des constantes moleculaires precises et permettre la reduction du spectre moleculaire. Une particularite remarquable de notre instrument est la possibilite d'enregistrer le signal de fragmentation moleculaire par laser via les etats de predissociation de la molecule etudiee. Notre contribution a ete d'ameliorer et de moderniser l'equipement existant. Nous avons augmente la resolution spectrale de notre instrument. Nous avons atteint notre principal objectif, a savoir, la possibilite d'acquerir des spectres selon deux modes : par detection du signal synchronisee sur le faisceau laser module en frequence ou par detection du signal directement par comptage. Cette derniere methode est une premiere sur ce type d'instrument et son principal interet a ete d'obtenir une meilleure mesure de l'elargissement de raie. Nous sommes parvenus a mettre clairement en evidence l'elargissement de raie avec la puissance laser en utilisant la methode de detection par comptage direct. La fluorescence induite par

  13. Elaboration de nouvelles approches micromecaniques pour l'optimisation des performances mecaniques des materiaux heterogenes

    NASA Astrophysics Data System (ADS)

    Aboutajeddine, Ahmed

    Les modeles micromecaniques de transition d'echelles qui permettent de determiner les proprietes effectives des materiaux heterogenes a partir de la microstructure sont consideres dans ce travail. L'objectif est la prise en compte de la presence d'une interphase entre la matrice et le renforcement dans les modeles micromecaniques classiques, de meme que la reconsideration des approximations de base de ces modeles, afin de traiter les materiaux multiphasiques. Un nouveau modele micromecanique est alors propose pour tenir compte de la presence d'une interphase elastique mince lors de la determination des proprietes effectives. Ce modele a ete construit grace a l'apport de l'equation integrale, des operateurs interfaciaux de Hill et de la methode de Mori-Tanaka. Les expressions obtenues pour les modules globaux et les champs dans l'enrobage sont de nature analytique. L'approximation de base de ce modele est amelioree par la suite dans un nouveau modele qui s'interesse aux inclusions enrobees avec un enrobage mince ou epais. La resolution utilisee s'appuie sur une double homogeneisation realisee au niveau de l'inclusion enrobee et du materiau. Cette nouvelle demarche, permettra d'apprehender completement les implications des approximations de la modelisation. Les resultats obtenus sont exploites par la suite dans la solution de l'assemblage de Hashin. Ainsi, plusieurs modeles micromecaniques classiques d'origines differentes se voient unifier et rattacher, dans ce travail, a la representation geometrique de Hashin. En plus de pouvoir apprecier completement la pertinence de l'approximation de chaque modele dans cette vision unique, l'extension correcte de ces modeles aux materiaux multiphasiques est rendue possible. Plusieurs modeles analytiques et explicites sont alors proposee suivant des solutions de differents ordres de l'assemblage de Hashin. L'un des modeles explicite apparait comme une correction directe du modele de Mori-Tanaka, dans les cas ou celui ci echoue a

  14. Modelisation frequentielle de la permittivite du beton pour le controle non destructif par georadar

    NASA Astrophysics Data System (ADS)

    Bourdi, Taoufik

    Le georadar (Ground Penetrating Radar (GPR)) constitue une technique de controle non destructif (CND) interessante pour la mesure des epaisseurs des dalles de beton et la caracterisation des fractures, en raison de ses caracteristiques de resolution et de profondeur de penetration. Les equipements georadar sont de plus en plus faciles a utiliser et les logiciels d'interpretation sont en train de devenir plus aisement accessibles. Cependant, il est ressorti dans plusieurs conferences et ateliers sur l'application du georadar en genie civil qu'il fallait poursuivre les recherches, en particulier sur la modelisation et les techniques de mesure des proprietes electriques du beton. En obtenant de meilleures informations sur les proprietes electriques du beton aux frequences du georadar, l'instrumentation et les techniques d'interpretation pourraient etre perfectionnees plus efficacement. Le modele de Jonscher est un modele qui a montre son efficacite dans le domaine geophysique. Pour la premiere fois, son utilisation dans le domaine genie civil est presentee. Dans un premier temps, nous avons valide l'application du modele de Jonscher pour la caracterisation de la permittivite dielectrique du beton. Les resultats ont montre clairement que ce modele est capable de reproduire fidelement la variation de la permittivite de differents types de beton sur la bande de frequence georadar (100 MHz-2 GHz). Dans un deuxieme temps, nous avons montre l'interet du modele de Jonscher en le comparant a d'autres modeles (Debye et Debye-etendu) deja utilises dans le domaine genie civil. Nous avons montre aussi comment le modele de Jonscher peut presenter une aide a la prediction de l'efficacite de blindage et a l'interpretation des ondes de la technique GPR. Il a ete determine que le modele de Jonscher permet de donner une bonne presentation de la variation de la permittivite du beton dans la gamme de frequence georadar consideree. De plus, cette modelisation est valable pour differents

  15. Les cyclones tropicaux et le changement climatique

    NASA Astrophysics Data System (ADS)

    André, Jean-Claude; Royer, Jean-François; Chauvin, Fabrice

    2008-09-01

    Results from observations and modelling studies, a number of which having been used to support the conclusions of the IPCC fourth assessment report, are presented. For the past and present-day (since 1970) periods, the increase of strong cyclonic activity over the North Atlantic Ocean appears to be in good correlation with increasing temperature of the ocean surface. For regions where observational data are of lesser quality, the increasing trend is less clear. In fact, assessing long-term changes is made difficult due to both the multi-decennial natural variability and the lesser coverage of observations before satellites were made available. Indirect observational data, such as those derived from quantitative estimations of damage caused by tropical cyclones, suffer from many artefacts and do not allow the resolving of the issue either. For the future, only numerical three-dimensional climate models can be used. They nevertheless run presently with too-large grid-sizes, so that their results are still not converging. Various simulations lead indeed to different results, and it is very often difficult to find the physical reasons for these differences. One concludes by indicating some ways through which numerical simulations could be improved, leading to a decrease of uncertainties affecting the prediction of cyclonic activity over the next decades.

  16. Development of a complex type of pour point-viscosity depressant and infrared spectrum research

    SciTech Connect

    Zhang Fusheng; Wang Biao

    1995-11-01

    EMS, a complex type of pour point-viscosity depressant for crudes, is composed of EVA, MVA [molecular structure shown for both in the paper] and Surfactant. After adding EMS into the crudes, a very nice result in reducing pour point and viscosity for Daqing, Jianghan and Jidong crudes was obtained. From the research result of infrared spectroscopy of the interactions between EMS or its components and wax or mixture of resin and asphaltene isolated from three crudes, it has been shown that the area ratio of the double absorption peaks of 719 cm{sup {minus}1} and 729 cm{sup {minus}1} or 1,368 cm{sup {minus}1} and 1,378 cm{sup {minus}1} changed remarkably after EMS or its components were added into wax. It can be inferred that the cocrystallization probably happened between the EMS or its components and the wax. The position of the 4,000--3,000 cm{sup {minus}1} infrared absorption peak of the mixture of resin and asphaltene moved to the lower wavenumber, and the ratio of the area of 1,373 cm{sup {minus}1} absorption peak (methyl) to the combination area of 748, 810 and 871 cm{sup {minus}1} absorption peak (aromatics) increased remarkably. It can be inferred that the pour point-viscosity depressant molecules destroyed the original hydrogen bonds and overlapping of the aromatic ring planes among resin and asphaltene molecules to form a new cubic molecular structure and new hydrogen bonds with the results the viscosity of crude oil will be reduced.

  17. Plasma Sprayed Pour Tubes and Other Melt Handling Components for Use in Gas Atomization

    SciTech Connect

    Byrd, David; Rieken, Joel; Heidloff, Andy; Besser, Matthew; Anderson, Iver

    2011-04-01

    Ames Laboratory has successfully used plasma sprayed ceramic components made from yttria stabilized zirconia as melt pouring tubes for gas atomization for many years. These tubes have proven to be strong, thermal shock resistant and versatile. Various configurations are possible both internally and externally. Accurate dimensions are achieved internally with a machined fugitive graphite mandrel and externally by diamond grinding. The previous study of the effect of spray parameters on density was extended to determine the effect of the resulting density on the thermal shock characteristics on down-quenching and up-quenching. Encouraging results also prompted investigation of the use of plasma spraying as a method to construct a melt pour exit stopper that is mechanically robust, thermal shock resistant, and not susceptible to attack by reactive melt additions. The Ames Laboratory operates two close-coupled high pressure gas atomizers. These two atomizers are designed to produce fine and coarse spherical metal powders (5{mu} to 500{mu} diameter) of many different metals and alloys. The systems vary in size, but generally the smaller atomizer can produce up to 5 kg of powder whereas the larger can produce up to 25 kg depending on the charge form and density. In order to make powders of such varying compositions, it is necessary to have melt systems capable of heating and containing the liquid charge to the desired superheat temperature prior to pouring through the atomization nozzle. For some metals and alloys this is not a problem; however for some more reactive and/or high melting materials this can pose unique challenges. Figure 1 is a schematic that illustrates the atomization system and its components.

  18. Evaluation de l'intergiciel de communication DDS pour son utilisation dans le domaine avionique

    NASA Astrophysics Data System (ADS)

    Levesque-Landry, Kevin

    Les aeronefs modernes doivent combler de plus en plus de fonctionnalites afin de satisfaire les besoins de la clientele. De ce fait, les besoins en communications des systemes avioniques sont grandissants. De plus, la portabilite et la reutilisabilite des applications sont des defis d'actualite dans le domaine avionique. De ce fait, ce projet de recherche vise a faire une evaluation de la technologie d'intergiciel de service de distribution de donnees (DDS) pour son utilisation dans le domaine avionique. Cette technologie permettrait de reduire la complexite des communications et faciliter la portabilite et reutilisabilite des applications grâce a son interface standardisee. Dans ce projet de recherche, la norme DDS est tout d'abord etudiee pour cibler les fonctionnalites qui sont utiles au domaine avionique. Les differentes polices de qualite de services sont ainsi etudiees et denotent la flexibilite de la technologie DDS. Un intergiciel DDS est egalement evalue dans un environnement de laboratoire afin de mesurer l'impact de l'utilisation de cette technologie sur les performances de latence ainsi que sur l'utilisation de la bande passante. Les resultats montrent une faible augmentation de la latence moyenne lorsque l'intergiciel DDS est utilise. L'intergiciel DDS est egalement utilise dans une etude de cas avec un AFCS (automatic flight control system) afin de quantifier les effets de son utilisation sur une application avionique. Les resultats montrent que l'utilisation de l'intergiciel DDS n'empeche pas l'AFCS d'atteindre la stabilite, mais qu'elle ralentit l'atteinte de cette derniere. Finalement, une etude de cas est effectuee afin de valider que la technologie DDS peut etre utilisee pour construire des systemes redondants. Les resultats montrent que l'intergiciel DDS permet de faire de la redondance de reserve sans avoir un impact visible sur les performances du systeme redondant.

  19. Insecticide and Repellent Mixture Pour-On Protects Cattle against Animal Trypanosomosis

    PubMed Central

    Abdoulmoumini, Mamoudou; Zoli, Andre; Cene, Bylah; Adakal, Hassane; Bouyer, Jérémy

    2016-01-01

    Background African animal trypanosomosis (AAT), transmitted by tsetse flies and tick-borne diseases are the main constraints to livestock production in sub-Saharan Africa. Vector control methods such as pour-on offer individual protection against ticks but not against tsetse so far, for which protection has always been communal, through a reduction of their density. The latter requires the treatment of a large part of the herd in a given landscape and is not instantaneous. Methodology/Principal Findings Two prospective surveys were conducted to evaluate the efficacy and persistence of a pour-on formulation composed of cypermetrhin, chlorpyrifos, piperonyl butoxid and citronella (Vectoclor, CEVA Santé Animal). In experimental conditions, tsetse flies were exposed to treated and control cattle. Flies knockdown and engorgement rates were determined and the product persistence was assessed as the time for these parameters to drop below 50% (T50). T50 was 37 days (95%CI: [33–41] days) and 46 days (95%CI: [39–56] days) for the knockdown and engorgement rates respectively. In field conditions, two cattle herds were monitored following a case-control experimental design, in the Adamaoua region of Cameroon. One herd was treated once with Vectoclor pour-on (treated group) and the second used as a control group (not treated). Ticks infestation rate, trypanosomosis prevalence and packed-cell volume were measured over the two months following treatment. The treatment was highly effective against ticks with a complete elimination three days after application in the treated group. Trypanosomosis prevalence was also significantly reduced during the study (by 4, P<0.001) and PCV of the treated group increased significantly in the same time (P<0.001), contrary to the control group. Conclusions/Significance The protection of this new pour-on against tsetse bites and trypanosomosis is demonstrated here for the first time. Moreover, this insecticide and repellent mixture offer a

  20. Explorer : des clés pour mieux comprendre la matière

    ScienceCinema

    None

    2016-07-12

    Le LHC va-t-il bouleverser les théories de l'infiniment petit ? Les physiciens aimeraient que l'accélérateur fasse trembler le modèle standard. Cette théorie des particules élémentaires et des forces laisse de nombreuses zones d'ombre. Le LHC et ses expériences ont été conçus pour les éclairer.

  1. Benefits of Computer Assisted Translation to Information Managers and End-Users (L’Interet de la Traduction Assistee par Ordinateur Pour les Responsables de Centres d’Information et Pour Les Utilisateurs Finaux)

    DTIC Science & Technology

    1990-06-01

    couramment en anglais, tine analyse purement utitisis, lermetlant tinc utiLisation - grammaticale L’aisse subsister ban nombre interactive avec tine...l’indust’riaLisation pour de texte et autres outits Linguistiques se placer dans tin environne ment utiLises pour La TAO scront de toute facon op eritiannet...Llindexation automatique des textes en angtala ou en fran~ais, Ainsi Le texte-peut provenir d’une bande L’aLimentation automatique d’une base de magnetique

  2. Nouvelle stratégie pour l'amélioration de la brillance d'une source VUV nanoseconde

    NASA Astrophysics Data System (ADS)

    Chénais, S.; Castex, M.-C.

    2006-10-01

    Nous présentons une technique simple pour améliorer d'un à deux ordres de grandeur l'énergie d'un rayonnement cohérent à 125 nm, obtenu par somme de fréquence résonante dans une vapeur de mercure à température ambiante. En focalisant sur la surface de mercure un laser ArF à 193 nm, le signal VUV est multiplié par 6, facteur qui peut s'élever jusqu'à ˜ 60 lorsque l'intensité des faisceaux fondamentaux est réduite. Cette expérience de validation ouvre de nombreuses opportunités d'amélioration pour une source VUV de forte brillance, applicable à la nanostructuration de matériaux pour l'optique.

  3. Efficacy of oral, injectable and pour-on formulations of moxidectin against gastrointestinal nematodes in cattle in New Zealand.

    PubMed

    Leathwick, D M; Miller, C M

    2013-01-31

    The efficacy of moxidectin administered by different routes, against naturally acquired infections of gastrointestinal nematode parasites of cattle, was compared using faecal egg count reduction tests on 14 commercial farms throughout New Zealand. On each farm, groups of 15 calves were sampled for faecal nematode egg count and then treated with ivermectin administered orally, or with moxidectin administered either by the oral, subcutaneous injection or topical (pour-on) route. Samples were again collected 14 days after treatment and efficacy was calculated as the percentage reduction in-group mean egg count between the pre- and post-treatment samples. In addition, efficacy was calculated for individual animals, in order to compare the variability of the different treatments. On four farms untreated control groups were run and five animals from each of the control and all of the moxidectin-treated groups were bled over time to estimate plasma-moxidectin concentrations. Averaged across all tests, the reduction in faecal egg count was significantly greater after treatment with moxidectin oral (91.1%) than following treatment with moxidectin injection (55.5%) or with moxidectin pour-on (51.3%). Low efficacies were invariably against Cooperia oncophora. The oral treatments were significantly less variable in efficacy than the injection and pour-on treatments. Moxidectin concentrations in plasma were highest following subcutaneous injection and lowest following pour-on administration. Plasma levels following oral administration were intermediate, being significantly lower than post-injection and significantly higher than post-pour-on. There was no evidence of transfer of moxidectin to untreated animals through licking. Based on these results, along with those of other studies, it is proposed that oral administration of macrocyclic lactone anthelmintics results in higher concentrations of active reaching the target worms in the gastrointestinal tract than following either

  4. Développement de matériaux pour les piles à combustibles SOFC

    NASA Astrophysics Data System (ADS)

    Dubourdieu, G.; Gauthier, G.; Henry, J. Y.; Sanchette, F.; Delépine, J.; Lefebvre-Joud, F.

    2002-04-01

    Dans le cadre des nouveaux programmes du CEA dédiés aux Nouvelles Technologies pour l'Energie, l'un des axes concerne les piles à combustible haute température et tout solide (SOFC). Deux voies de recherche sont présentées ici ; l'une traite de l'élaboration d'électrolytes connus - de type zircone yttriée - en couche mince, par des techniques de dépôt PVD ou CVD à injection, ceci dans le but d'un fonctionnement à plus basse température. L'autre a trait au développement de matériaux d'anode compatibles avec l'utilisation directe du méthane à la place de l'hydrogène. Les chromates de lanthane substitué par le strontium, dont une méthode de synthèse sous forme de poudres très divisées est présentée ici, semblent être des matériaux prometteurs pour cette application, à condition qu'ils ne subissent pas de dégradation en fonctionnement.

  5. Suppléments de zinc pour la gastroentérite aiguë

    PubMed Central

    Goldman, Ran D.

    2013-01-01

    Résumé Question La gastroentérite accompagnée de diarrhée est un problème fréquent chez les enfants et peut entraîner une déshydratation, de la morbidité et, dans certains pays, une mortalité importantes. Y a-t-il lieu de donner des suppléments de zinc dans de tels cas? Réponse Le zinc se retrouve dans divers aliments et, au Canada, certains sont enrichis de zinc. Les suppléments de zinc sont éprouvés comme étant une mesure sûre et efficace pour raccourcir la durée des maladies accompagnées de diarrhée et possiblement réduire d’autres complications, dont la mort. Quoique l’Organisation mondiale de la Santé recommande une dose quotidienne de zinc pendant 10 à 14 jours pour prendre en charge la diarrhée aiguë chez l’enfant, les enfants canadiens qui s’alimentent normalement n’ont pas besoin de tels suppléments.

  6. Map projections

    USGS Publications Warehouse

    ,

    1993-01-01

    A map projection is used to portray all or part of the round Earth on a flat surface. This cannot be done without some distortion. Every projection has its own set of advantages and disadvantages. There is no "best" projection. The mapmaker must select the one best suited to the needs, reducing distortion of the most important features. Mapmakers and mathematicians have devised almost limitless ways to project the image of the globe onto paper. Scientists at the U. S. Geological Survey have designed projections for their specific needs—such as the Space Oblique Mercator, which allows mapping from satellites with little or no distortion. This document gives the key properties, characteristics, and preferred uses of many historically important projections and of those frequently used by mapmakers today.

  7. Enumeration of bacteria in clinically significant blood cultures in neutropenic and non-neutropenic patients using a pour plate method.

    PubMed

    Rice, P; Spencer, R C

    1991-03-01

    A 3-year review of clinically significant positive blood cultures was undertaken to assess any differences in the blood bacterial count between haematological neutropenic and other non-neutropenic patients. The pour-plate method was used. In Gram-positive infections the pour plate contained colonies in 61% of haematological patients and in 41% of others. In Gram-negative infection the figures were 54% and 25% respectively. The mean numbers of bacteria per ml of blood were increased in haematological patients compared with the others for both groups of organisms.

  8. Canadian Forces Education and Training for Interagency Operational Contexts (Education et Instruction des Forces Canadiennes Pour les Contextes Operationnels Interorganisationnels)

    DTIC Science & Technology

    2009-11-01

    psychologiques de la confiance et de la collaboration interorganisationnelles . Ce PRA exige notamment d’établir une base de référence pour les efforts...et programmes actuels d’éducation et d’instruction des FC afin de pouvoir travailler dans un contexte opérationnel interorganisationnel . À cette fin... interorganisationnel ; 2) avec l’aide des EM, examiner les compétences potentielles de base qui seraient exigées d’une personne pour qu’elle puisse travailler dans

  9. Environmentally Safe and Effective Processes for Paint Removal (Les Procedes Efficaces et Ecologiques pour l’Enlevement des Peintures)

    DTIC Science & Technology

    1993-03-01

    Efficaces et Ecologiques pour l’Enlevement des Peintures ) Papers presented at the 75th Meeting of’the AGARD Structures and Materials Panel, held in Lindau...pour I’Enl1,ement des Peintures ) Dist, Ibution/1 Availability Codes Avail and / or Dist Special h-/ t Papers presented at the 75th Meeting...Priface Dens Ie pussE, In peinture des adronef.% dtAlt enlevde mu moyen do produits chimiques dE&,apants. Coin mdthodes falsalent appall i des ingr~dients

  10. La dermoscopie pour la détection des mélanomes en pratique familiale

    PubMed Central

    Herschorn, Andrea

    2012-01-01

    Résumé Objectif Évaluer l’exactitude diagnostique et l’utilité clinique de la dermoscopie pour la détection de mélanomes en pratique familiale. Sources des données Nous avons fait une recension dans les bases de données Ovid MEDLINE (de 1946 à juin 2011), EMBASE, PubMed et Cochrane à l’aide des expressions suivantes en anglais: dermoscopy, dermatoscopy, epiluminescence microscopy, family practice, general practice, primary health care, melanoma, skin neoplasms et pigmented nevus. Pour être prises en considération, les études devaient être des articles de recherche primaire ayant pour sujets des médecins de famille, ainsi que la formation en dermoscopie et son utilisation en tant qu’intervention. La recherche a produit 4 articles qui répondaient aux critères d’inclusion et présentaient des données probantes de niveau I selon la définition du Groupe d’étude canadien sur les soins de santé préventifs. Message principal Dans le milieu de la pratique familiale, la dermoscopie a une sensibilité plus élevée que l’examen à l’œil nu pour la détection des mélanomes sans avoir, généralement, une spécificité moins grande. La dermoscopie aide aussi à accroître le degré de confiance des médecins de famille dans leur diagnostic préliminaire des lésions. L’utilisation de la dermoscopie plutôt que l’examen à l’œil nu augmente la probabilité qu’une lésion jugée cancéreuse le soit de fait et qu’une lésion jugée bénigne le soit en réalité. Conclusion Il est démontré que la dermoscopie est un outil utile et relativement peu coûteux pour la détection des mélanomes en pratique familiale. Cette technique rend les médecins de famille plus confiants dans l’exactitude de leurs demandes de consultations auprès de dermatologues et contribue à diminuer les biopsies inutiles. La dermoscopie peut se révéler plus particulièrement utile dans l’examen des patients à risque élevé de mélanomes, étant donn

  11. Implications of Multilingual Interoperability of Speech Technology for Military Use (Les implications de l’interoperabilite multilingue des technologies vocales pour applications militaires)

    DTIC Science & Technology

    2004-09-01

    tant pour les produits du commerce (COTS), que pour le développement de nouvelles technologies. L’atelier a été organisé en 4 sessions, à savoir...publication sont souhaitables. Si vous souhaitez recevoir une notification électronique de la disponibilité des rapports de la RTO au fur et à mesure de leur

  12. Data Selection for Fast Projection Techniques: A Comparative Study of Direction Finding Performance

    DTIC Science & Technology

    1992-12-01

    de brouilleurs . Ces algorithmes utilisent un crit~re pour ]a selection de bons vecteurs de donndes A la sortie d’une antenne rdseau. Les vecteurs...sdlectionnds sont utilisds dans des algorithmes de projection rapides afin d’estimer le sous-espace des brouilleurs et ainsi calculer 1’estimateur spectral...diffdrents qui dvaluent le pouvoir de r6solution et l’effet de la puissance des brouilleurs . * III EXECUTIVE SULMMARY Accurate angular location and

  13. Project SEED.

    ERIC Educational Resources Information Center

    Chemical and Engineering News, 1986

    1986-01-01

    Reports on Project SEED (Summer Educational Experience for the Disadvantaged) a project in which high school students from low-income families work in summer jobs in a variety of academic, industrial, and government research labs. The program introduces the students to career possibilities in chemistry and to the advantages of higher education.…

  14. Project EASIER.

    ERIC Educational Resources Information Center

    Alvord, David J.; Tack, Leland R.; Dallam, Jerald W.

    1998-01-01

    Describes the development of Project EASIER, a collaborative electronic-data interchange for networking Iowa local school districts, education agencies, community colleges, universities, and the Department of Education. The primary goal of this project is to develop and implement a system for collection of student information for state and federal…

  15. Project Success.

    ERIC Educational Resources Information Center

    Meredith, Larry D.

    Project Success consists of after-school, weekend, and summer educational programs geared toward minority and disadvantaged students to increase their numbers seeking postsecondary education from the Meadville, Pennsylvania area. The project is funded primarily through the Edinboro University of Pennsylvania, whose administration is committed to…

  16. Project CHILD.

    ERIC Educational Resources Information Center

    Robison, Helen F.; And Others

    This document described Project CHILD, a program of educational change and curriculum development for disadvantaged prekindergarten and kindergarten children. The historical part of this report indicates that the project began in 1966 with a small-scale study of teacher behavior and children's responses in a few classrooms in a Harlem school…

  17. Project FAST.

    ERIC Educational Resources Information Center

    Essexville-Hampton Public Schools, MI.

    Described are components of Project FAST (Functional Analysis Systems Training) a nationally validated project to provide more effective educational and support services to learning disordered children and their regular elementary classroom teachers. The program is seen to be based on a series of modules of delivery systems ranging from mainstream…

  18. Hernie inguinale en Afrique subsaharienne: quelle place pour la technique de Shouldice?

    PubMed Central

    Traoré, Drissa; Diarra, Lasseny; Coulibaly, Bréhima; Bengaly, Brehima; Togola, Birama; Traoré, Alhassane; Traoré, Hamady; Ongoïba, Nouhoum; Sissoko, Filifing; Koumaré, Abdel Karim

    2015-01-01

    L'objectif était d’étudier l'aspect épidémio-clinique et thérapeutique de la hernie inguinale selon la technique de Shouldice. Nous avons réalisé une étude rétrospective, portant sur les patients opérés pour hernie inguinale selon la technique de Shouldice dans le service de chirurgie B du CHU du Point G, Bamako, Mali. Il a été enregistré 225patients opérés selon la technique de Shouldice. L’âge moyen était de 49 ans +/- 17,7. Il y avait 90,7% (204) hommes soit un sex-ratio de 9,7. Les cultivateurs, les ménagères et les ouvriers ont représenté 51,1% (115). Dans 75,2% (169) les patients ont consulté pour tuméfaction inguinale. En pré opératoire, la hernie était compliquée chez 82 (36,4%) patients dont 24 cas de récidive. L’étranglement herniaire a été la principale complication pré opératoire 58,5% (48/82). Les suites opératoires à un an ont été simples chez 94,2%(210) des patients; elles étaient marquées par 8 cas de récidive, 4 cas de névralgie, 2 cas d'atrophie testiculaire, 1 cas de chéloïde. La technique de Shouldice est la technique de choix pour la cure de la hernie inguinale dans les pays en voie de développement à cause du bon résultat et son coût peu onéreux par rapport aux autres techniques utilisant des dispositifs médicaux. PMID:26664551

  19. Prete-moi Ton Logiciel pour Ecrire un Mot (Lend Me Your Software Program So I Can Write a Letter).

    ERIC Educational Resources Information Center

    Mangenot, Francois

    1993-01-01

    A brief discussion and description of one commercially available software package ("Pour Ecrire un Mot") for writing letters of various types uses the love letter as an example of the software's functioning. Answers to the prompting questions on the screen determine the few variable parameters of the text to be generated. (four…

  20. Approche pour les comportements sexuels inappropriés chez des personnes atteintes de démence

    PubMed Central

    Joller, Petra; Gupta, Neeraj; Seitz, Dallas P.; Frank, Christopher; Gibson, Michelle; Gill, Sudeep S.

    2013-01-01

    Résumé Objectif Présenter aux médecins de famille une mise à jour sur l’approche au diagnostic et à la prise en charge des comportements sexuels inappropriés (CSI) chez les personnes atteintes de démence. Sources des données On a fait une recherche dans MEDLINE et EMBASE pour cerner des articles pertinents publiés avant juin 2012. On n’a trouvé aucune étude de niveau I; la plupart des articles fournissaient des données probantes de niveau III. Message principal Les comportements sexuels inappropriés sont fréquents chez les personnes atteintes de démence. Divers facteurs (p. ex., culturels, religieux, perspectives sociétales de la sexualité gériatrique, questions médicolégales) pourraient compliquer l’évaluation de tels comportements et doivent être pris en compte pour permettre une prise en charge appropriée à chaque patient. Il existe des outils pour documenter les CSI. Des interventions créatives non pharmacologiques pour les CSI pourraient être efficaces quand elles sont adaptées à chaque patient. Certaines pharmacothérapies (p. ex., antidépresseurs, antiandrogènes, antipsychotiques et anticonvulsifs) ont été proposées pour les symptômes qui ne répondent pas aux interventions non pharmacologiques. Par ailleurs, les données probantes à l’appui des traitements à l’aide de médicaments sont limitées, les effets secondaires demeurent un aspect important à considérer et il est incertain s’ils devraient être utilisés comme traitement de première ou de deuxième intention. Conclusion Quoiqu’il n’y ait pas d’algorithme de traitements empiriquement établi pour les CSI reliés à la démence, les ouvrages actuels offrent certaines données probantes concernant diverses thérapies pharmacologiques et non pharmacologiques. Des recherches de grande qualité plus approfondies sont nécessaires de toute urgence pour guider les médecins de famille qui prennent en charge des patients qui ont des CSI reliés à la

  1. Characteristics of Anorthite-Pyroxene Ceramics Made from Hot-Poured Steelmaking Slag

    NASA Astrophysics Data System (ADS)

    Li, Bowen; He, Mingsheng; Hwang, Jiann-Yang; Gan, Wangui

    2017-02-01

    Steelmaking slag is an alkaline byproduct generated from the steelmaking process. It consists mainly of oxides of calcium, iron, silicon, magnesium, and aluminum. It has a volumetric production in the steelmaking industry which has made a great impact on environment remediation. In this study, anorthite-pyroxene ceramic was prepared with hot-poured steelmaking slag, kaolin, and quartz with a sintering process. The ceramic products can be well sintered by heating at 1200°C, but they melted at 1300°C. The major mineral phases were anorthite, pyroxene, and spinel when sintering at 1150°C, while the characteristic peaks of belite, alite, and quartz in raw materials disappeared. The major mineral components of the ceramic become anorthite and pyroxene at 1200°C. The additional mixed wollastonite was involved in a sintering reaction when the temperature increased to 1200°C. The newly crystalized grains were uniformly formed and distributed.

  2. Fabrication et etude de cristaux photoniques pour les longueurs d'onde de telecommunication optique

    NASA Astrophysics Data System (ADS)

    Aboudihab, Ismail

    Nous avons fabrique et etudie des cristaux photoniques bidimensionnels et tridimensionnels. Les cristaux 3D sont constitues de microbilles de polystyrene autoassemblees. La structure inverse en BaTiO3 a ete aussi fabriquee, ou l'on remplace l'espace entre les microbilles par du BaTiO3, alors que les microbilles sont eliminees. Nous avons essaye en particulier de comprendre les differents phenomenes qui influencent la cristallisation de ces structures afin d'obtenir des films de meilleure qualite. Les cristaux bidimensionnels, constitues de cylindres vides imbibes dans un semiconducteur (As2S3 ou Si), sont obtenus par holographie laser. Nous avons montre que cette technique est tres interessante pour la production en serie de ces structures. Des guides d'ondes, des coupleurs, et des jonctions Y, imbibes dans des cristaux photoniques bidimensionnels, ont aussi ete fabriques. Des mesures optiques et des simulations numeriques ont ete menees dans le but de caracteriser ces structures.

  3. Efficacy of moxidectin pour-on against nematode infections in cattle.

    PubMed

    Hubert, J; Kerboueuf, D; Le Stang, J P; Cardinaud, B; Blond, F

    1995-06-24

    Three groups of eight calves, naturally infected with gastrointestinal nematodes and artificially infected with Dictyocaulus viviparus were used to evaluate the efficacy of moxidectin pour-on at dose rates of 0.35 mg/kg and 0.5 mg/kg bodyweight. With both doses the efficacy was 100 per cent against adult D viviparus, Trichostrongylus axei, Ostertagia species and Nematodirus helvetianus. It was more than 99 per cent against Ostertagia and Nematodirus species fourth stage larvae. A small number of Cooperia species were found after treatment, and for this parasite, the efficacy of moxidectin ranged from 97.6 per cent against the larval stages to 98.8 per cent against the adults. No adverse reactions to the moxidectin treatment were observed.

  4. Soft Drink “Pouring Rights”: Marketing Empty Calories to Children

    PubMed Central

    Nestle, Marion

    2000-01-01

    Healthy People 2010 objectives call for meals and snacks served in schools to contribute to overall diets that meet federal dietary guidelines. Sales in schools of foods and drinks high in calories and low in nutrients undermine this health objective, as well as participation in the more nutritious, federally sponsored, school lunch programs. Competitive foods also undermine nutrition information taught in the classroom. Lucrative contracts between school districts and soft drink companies for exclusive rights to sell one brand are the latest development in the increasing commercialization of school food. These contracts, intended to elicit brand loyalty among young children who have a lifetime of purchases ahead of them, are especially questionable because they place schools in the position of “pushing” soft drink consumption. “Pouring rights” contracts deserve attention from public health professionals concerned about the nutritional quality of children's diets. Imagesp308-ap313-a PMID:11059423

  5. Efficacy of alphacypermetrin pour-on against natural Werneckiella equi infestation on donkeys (Equus asinus).

    PubMed

    Veneziano, Vincenzo; Neglia, Gianluca; Galietti, Alfredo; Rufrano, Domenico; Bassini, Andrea; Mariani, Ugo; Gokbulut, Cengiz

    2012-09-01

    The chewing louse Werneckiella equi is an ectoparasite of donkeys and other equids. Alphacypermethrin (ACYP) is a pyrethroid insecticide commonly used for the control of insects of veterinary and public health concerns. A trial was conducted to assess the efficacy of ACYP against W. equi on naturally infested donkeys. Parasitological investigations were performed on 13 animals. On day 0, the donkeys received ACYP pour-on at the manufacturer's recommended dose rate for cattle. Louse counts were performed on days -1, 7, 14, 21, 28, 35, 42, 49, and 56 at seven predilection sites on the skin of each donkey. ACYP was completely effective (100 %) from day 7, until the end of the study. ACYP was well tolerated by all animals as there were no observed clinical adverse reactions. ACYP was highly effective, safe, user-friendly, and considered to be suitable for the treatment of donkeys for W. equi infestation.

  6. Lasers ''aquamarine" pour la spectroscopie de I{2} et la métrologie

    NASA Astrophysics Data System (ADS)

    Jacquemet, M.; Balembois, F.; Georges, P.; Ferrand, B.

    2006-10-01

    Nous présentons ici les performances de deux sources lasers monomodes longitudinales émettant dans le bleu-vert à 501,7 nm et visant des applications métrologiques et de spectroscopie de l'iode. Ces sources utilisent deux cristaux laser dopés ytterbium dont l'émission dans l'infrarouge est doublée en fréquence intracavité avec un cristal de KNbO3 pour émettre dans le visible. Les meilleures performances dans le visible sont obtenues avec un cristal de Yb:YSO produisant 60 mW à 501,7 nm. Le cristal de Yb:KYW permet lui l'émission simultanée de 35 mW de bleu-vert et de 500 mW d'infrarouge à 1003,4 nm.

  7. Une nouvelle voie pour la conception des implants intervertébraux

    NASA Astrophysics Data System (ADS)

    Gradel, T.; Tabourot, L.; Arrieux, R.; Balland, P.

    2002-12-01

    L'objectif de notre travail est la conception d'une nouvelle génération d'implants intersomatiques qui s'adapte parfaitement à la géométrie des plateaux vertébraux en se déformant. Pour cela, nous avons utilisé une nouvelle démarche qui consiste à simuler entièrement le procédé de fabrication en l'occurrence l'emboutissage, Cette simulation, en concervant l'historique des sollicitations exercées sur le matériau lors de sa mise en œuvre permet de valider très précisément sa résistance mécanique en fin de cycle. Au cours de cette étude, nous avons mené en parallèle deux analyses dites “ coopératives ” : l'une fondée sur un modèle phénoménologique de type HILL et l'autre sur un modèle multi-échelles prenant en compte des phénomènes plus physiques afin d'acquérir une bonne connaissance du comportement du matériau lors de la déformation. C'est pour sa bonne résistance, sa biocompatibilité et ses propriétés radiologiques que nous avons choisi le T40 (titane pur) comme matériau.

  8. Project LEAF

    EPA Pesticide Factsheets

    Project LEAF has a goal of educating farmworkers about how to reduce pesticide exposure to their families from pesticide residues they may be inadvertently taking home on their clothing, etc. Find outreach materials.

  9. Geodynamics Project

    ERIC Educational Resources Information Center

    Drake, Charles L.

    1977-01-01

    Describes activities of Geodynamics Project of the Federal Council on Science and Technology, such as the application of multichannel seismic-reflection techniques to study the nature of the deep crust and upper mantle. (MLH)

  10. Project Reptile!

    ERIC Educational Resources Information Center

    Diffily, Deborah

    2001-01-01

    Integrating curriculum is important in helping children make connections within and among areas. Presents a class project for kindergarten children which came out of the students' interests and desire to build a reptile exhibit. (ASK)

  11. Swedish Projects

    DTIC Science & Technology

    2005-12-01

    development, evaluate training regimes and design of new systems with complex man- machine interface problems. The project uses advanced statistical...physiological measures to provide input to adaptive man- machine interfaces . The goal of the projects is to further develop measurement methods with...dinteraction Homme -Système Intuitive)., The original document contains color images. 14. ABSTRACT 15. SUBJECT TERMS 16. SECURITY CLASSIFICATION OF: 17

  12. Preparation Du Terrain Pour Le Project D'Alphabetisation Fonctionnelle Au Laos--Activities Preliminaires (Groundwork for the Functional Literacy Project in Laos--Preliminary Activities).

    ERIC Educational Resources Information Center

    Arnaud, Alexandre

    This document summarizes the authors ideas and ideas which were communicated during his meetings with various members of various national and international organizations. The purpose of these conversations was to study and evaluate the importance of the human factor which has determined the success of a demonstration farm at Vientiane and to…

  13. Computer Technologies for Postsecondary Students with Disabilities. Adaptech Project = Technologies Informatiques pour les Etudiants ayant des Incapacites au Postsecondaire. Project Adaptech.

    ERIC Educational Resources Information Center

    Fossey, Myrtis-Eirene; Fichten, Catherine S.; Barile, Maria; Asuncion, Jennison V.

    In 1999, a survey was conducted of almost 800 university students with different disabilities across Canada to investigate what computer equipment students used and wanted, how they financed their computer technologies, and why they failed to take advantage of government subsidy programs. Results from the survey indicate many students did not know…

  14. Modelisation de photodetecteurs a base de matrices de diodes avalanche monophotoniques pour tomographie d'emission par positrons

    NASA Astrophysics Data System (ADS)

    Corbeil Therrien, Audrey

    La tomographie d'emission par positrons (TEP) est un outil precieux en recherche preclinique et pour le diagnostic medical. Cette technique permet d'obtenir une image quantitative de fonctions metaboliques specifiques par la detection de photons d'annihilation. La detection des ces photons se fait a l'aide de deux composantes. D'abord, un scintillateur convertit l'energie du photon 511 keV en photons du spectre visible. Ensuite, un photodetecteur convertit l'energie lumineuse en signal electrique. Recemment, les photodiodes avalanche monophotoniques (PAMP) disposees en matrice suscitent beaucoup d'interet pour la TEP. Ces matrices forment des detecteurs sensibles, robustes, compacts et avec une resolution en temps hors pair. Ces qualites en font un photodetecteur prometteur pour la TEP, mais il faut optimiser les parametres de la matrice et de l'electronique de lecture afin d'atteindre les performances optimales pour la TEP. L'optimisation de la matrice devient rapidement une operation difficile, car les differents parametres interagissent de maniere complexe avec les processus d'avalanche et de generation de bruit. Enfin, l'electronique de lecture pour les matrices de PAMP demeure encore rudimentaire et il serait profitable d'analyser differentes strategies de lecture. Pour repondre a cette question, la solution la plus economique est d'utiliser un simulateur pour converger vers la configuration donnant les meilleures performances. Les travaux de ce memoire presentent le developpement d'un tel simulateur. Celui-ci modelise le comportement d'une matrice de PAMP en se basant sur les equations de physique des semiconducteurs et des modeles probabilistes. Il inclut les trois principales sources de bruit, soit le bruit thermique, les declenchements intempestifs correles et la diaphonie optique. Le simulateur permet aussi de tester et de comparer de nouvelles approches pour l'electronique de lecture plus adaptees a ce type de detecteur. Au final, le simulateur vise a

  15. Realisation de guides d'onde plans faibles pertes en nitrure de silicium pour un biocapteur integre

    NASA Astrophysics Data System (ADS)

    Gorin, Arnaud

    Le nitrure de silicium est un materiau tres utilise en microelectronique et en optique integree due a l'excellente homogeneite et reproductibilite de son epaisseur et de son indice de refraction. De plus, l'indice de refraction eleve du nitrure de silicium est particulierement interessant pour les applications en biophotonique. En effet, ces dernieres annees les biocapteurs a champ evanescent ont demontre une augmentation de la sensibilite avec l'utilisation de guides d'onde plans a haut indice de refraction. La sensibilite pourrait etre encore amelioree en integrant sur un meme substrat l'ensemble des composants passifs et actifs (Lab-on-a-chip) qui composent le biocapteur a champ evanescent. L'integration des differents composants optiques passe par la fabrication d'un guide d'onde plan dans le visible qui soit realise avec des procedes a basse temperature, faible epaisseur, faible perte et haut indice de refraction. Meme si les couches d'oxyde metallique (TiO2, Ta2O5 par exemple), generalement utilisees pour ce type d'application, permettent d'obtenir de bonnes proprietes optiques, elles ne permettent pas d'atteindre la qualite des couches en nitrure de silicium notamment en termes de rugosite de surface pour de faibles epaisseurs. Dans le cadre de ces travaux de doctorat, les parametres du guide d'onde sont optimises pour une application utilisant des fluorophores a points quantiques emettant a 650 nm et excites avec une source laser a 532 nm. Une epaisseur de 80 nm est determinee comme optimale pour l'excitation, la collection de la fluorescence et le couplage fibre-guide. Le developpement d'un guide d'onde capable d'atteindre cette epaisseur et conservant des bonnes proprietes optiques est necessaire. A notre connaissance aucun travail n'a ete realise pour optimiser les pertes dans le visible des guides de nitrure de silicium, en fonction des parametres du procede PECVD. Dans ce travail de these, des guides d'onde sont fabriques pour la premiere fois en

  16. Maximum Capital Project Management.

    ERIC Educational Resources Information Center

    Adams, Matt

    2002-01-01

    Describes the stages of capital project planning and development: (1) individual capital project submission; (2) capital project proposal assessment; (3) executive committee; and (4) capital project execution. (EV)

  17. La diffraction des neutrons et des rayons X pour l'étude structurale des liquides et des verres

    NASA Astrophysics Data System (ADS)

    Fischer, H. E.; Salmon, P. S.; Barnes, A. C.

    2003-02-01

    La compréhension de mainte propriété physique d'un verre ou d'un liquide nécessite la connaissance des facteurs de structure partiels (PSFs) qui décrivent chacun la distribution d'une espèce atomique autour d'une autre. La technique de diffraction des neutrons avec substitution isotopique (NDIS) [1,2,3], ayant bien réussi a déterminer les PSFs de certains composés [4,5], est pourtant restreinte aux isotopes présentant un contraste suffisant en longueur de diffusion. D'un autre cote, la technique de diffusion anomale des rayons X (AXS ou AXD) [6] permet de faire varier la longueur de diffusion d'une espèce atomique pourvu que son énergie d'absorption soit à la fois accessible et suffisamment élevée pour donner un assez grand transfert du moment. La combinaison des techniques de diffraction des neutrons (avec ou sans substitution isotopique) et de diffraction des rayons X (avec ou sans diffusion anomale) peut donc permettre d'obtenir un meilleur contraste en longueurs de diffusion pour un système donné, mais exige une analyse de données plus soignée pour pouvoir bien tenir compte des erreurs systématiques qui sont différentes pour les 2 techniques [7]. Pour les atomes ayant des distributions électroniques quasi-sphériques, e.g. dans le cas d'un alliage liquide, la combinaison des techniques de NDIS et de diffraction des rayons X s'est déjà montrée très avantageuse pour la détermination des PSFs [8,9]. Dans le cas des verres ayant d'importantes liaisons covalentes, l'effective combinaison des 2 techniques peut être moins directe mais facilitée lorsqu'il s'agit des atomes de grand Z [10,11]. Nous présentons ici un sommaire du méthode et quelques exemples des résultats.

  18. Detectability of testosterone esters and estradiol benzoate in bovine hair and plasma following pour-on treatment.

    PubMed

    Stolker, A A M; Groot, M J; Lasaroms, J J P; Nijrolder, A W J M; Blokland, M H; Riedmaier, I; Becker, C; Meyer, H H D; Nielen, M W F

    2009-10-01

    The abuse of synthetic esters of natural steroids such as testosterone and estradiol in cattle fattening and sports is hard to detect via routine urine testing. The esters are rapidly hydrolysed in vivo into substances which are also endogenously present in urine. An interesting alternative can be provided by the analysis of the administered synthetic steroids themselves, i.e., the analysis of intact steroid esters in hair by liquid chromatography tandem mass spectrometry (LC/MS/MS). However, retrospective estimation of the application date following a non-compliant finding is hindered by the complexity of the kinetics of the incorporation of steroid esters in hair. In this study, the incorporation of intact steroid esters in hair following pour-on treatment has been studied and critically compared with results from intramuscular treatment. To this end animals were pour-on treated with a hormone cocktail containing testosterone cypionate, testosterone decanoate and estradiol benzoate in different carriers. The animals were either treated using injection and pour-on application once or three times having 1 week between treatments using injection and pour-on application. Animals were slaughtered from 10-12 weeks after the last treatment. Both hair and blood plasma samples were collected and analysed by LC/MS/MS. From the results, it is concluded that after single treatment the levels of steroid esters in hair drop to CCbeta levels (5-20 microg/kg) after 5-7 weeks. When treatment is repeated two times, the CCbeta levels are reached after 9-11 weeks. Furthermore, in plasma, no steroid esters were detected; not even at the low microgramme per litre level but--in contrast with the pour-on application--after i.m. injection, significant increase of 17beta-testosterone and 17beta-estradiol were observed. These observations suggest that transport of steroid esters after pour-on application is not only performed by blood but also by alternative fluids in the animal so

  19. Project Artemis

    NASA Technical Reports Server (NTRS)

    Birchenough, Shawn; Kato, Denise; Kennedy, Fred; Akin, David

    1990-01-01

    The goals of Project Artemis are designed to meet the challege of President Bush to return to the Moon, this time to stay. The first goal of the project is to establish a permanent manned base on the Moon for the purposes of scientific research and technological development. The knowledge gained from the establishment and operations of the lunar base will then be used to achieve the second goal of Project Artemis, the establishment of a manned base on the Martian surface. Throughout both phases of the program, crew safety will be the number one priority. There are four main issues that have governed the entire program: crew safety and mission success, commonality, growth potential, and costing and scheduling. These issues are discussed in more detail.

  20. Apollo Project

    NASA Technical Reports Server (NTRS)

    1965-01-01

    Langley personnel at Cape Canaveral during preliminary checkout of Project FIRE velocity package before launch. Project FIRE (Flight Investigation Reentry Environment) studied the effects of reentry heating on spacecraft materials. It involved both wind tunnel and flight tests, although the majority were tests with Atlas rockets and recoverable reentry packages. These flight tests took place at Cape Canaveral in Florida. Wind tunnel tests were made in several Langley tunnels including the Unitary Plan Wind Tunnel, the 8-foot High-Temperature Tunnel and the 9- x 6-Foot Thermal Structures Tunnel.

  1. Cloudnet Project

    DOE Data Explorer

    Hogan, Robin

    2008-01-15

    Cloudnet is a research project supported by the European Commission. This project aims to use data obtained quasi-continuously for the development and implementation of cloud remote sensing synergy algorithms. The use of active instruments (lidar and radar) results in detailed vertical profiles of important cloud parameters which cannot be derived from current satellite sensing techniques. A network of three already existing cloud remote sensing stations (CRS-stations) will be operated for a two year period, activities will be co-ordinated, data formats harmonised and analysis of the data performed to evaluate the representation of clouds in four major european weather forecast models.

  2. LLAMA Project

    NASA Astrophysics Data System (ADS)

    Arnal, E. M.; Abraham, Z.; Giménez de Castro, G.; de Gouveia dal Pino, E. M.; Larrarte, J. J.; Lepine, J.; Morras, R.; Viramonte, J.

    2014-10-01

    The project LLAMA, acronym of Long Latin American Millimetre Array is very briefly described in this paper. This project is a joint scientific and technological undertaking of Argentina and Brazil on the basis of an equal investment share, whose mail goal is both to install and to operate an observing facility capable of exploring the Universe at millimetre and sub/millimetre wavelengths. This facility will be erected in the argentinean province of Salta, in a site located at 4830m above sea level.

  3. Spent Nuclear Fuel project, project management plan

    SciTech Connect

    Fuquay, B.J.

    1995-10-25

    The Hanford Spent Nuclear Fuel Project has been established to safely store spent nuclear fuel at the Hanford Site. This Project Management Plan sets forth the management basis for the Spent Nuclear Fuel Project. The plan applies to all fabrication and construction projects, operation of the Spent Nuclear Fuel Project facilities, and necessary engineering and management functions within the scope of the project

  4. Nanofabrication de boites quantiques laterales pour l'optimisation de qubits de spin

    NASA Astrophysics Data System (ADS)

    Camirand Lemyre, Julien

    On présente dans ce travail un nouveau type de qubit de spin dont les performances reposent sur les propriétés d'un seul électron dans une double boîte quantique. Le fort moment dipolaire de la double boite combiné à une large variation du champ magnétique entre les deux boîtes permettrait de réaliser des opérations logiques plus rapidement que dans une seule boîte quantique. Pour maximiser les variations du champ magnétique, on utilisera un micro-aimant placé le plus près possible d'une des deux boîtes. À cette fin, une hétérostructure de GaAs/A1GaAs sur laquelle sont déposées des grilles d'aluminium a été utilisée pour former une double boite quantique latérale. L'occupation par un seul électron de la double boîte est confirmée par des mesures de transport électrique à basse température ainsi que par l'observation du blocage de spin. De plus, un procédé d'oxydation des grilles par plasma d'oxygène a été développé. Une étude des propriétés de l'oxyde formé par cette méthode montre qu'il est possible de placer un micro-aimant directement sur la surface de l'hétérostructure sans affecter l'isolation électrique entre les grilles. Cette nouvelle approche permet de produire des champs magnétiques encore plus intenses que dans les expériences antérieures, pour lesquelles le micro-aimant est placé beaucoup plus loin de la surface. L'ensemble du procédé de fabrication, de la photolithographie à l'électrolithographie, a été développé au cours de ce travail dans les salles blanches du département de génie électrique et dans les salles propres du département de physique de l'Université de Sherbrooke. Ce travail est une étape importante dans la réalisation de qubits de spin plus performants dans les boîtes quantiques latérales. Mots-clés: Information quantique, Spin, Rotations ultra-rapides, Boîtes quantiques latérales, Micro-aimants, Oxydation plasma, Nanofabrication.

  5. Recommandations pour le dépistage de l’hypertension chez les adultes canadiens

    PubMed Central

    Lindsay, Patrice; Gorber, Sarah Connor; Joffres, Michel; Birtwhistle, Richard; McKay, Donald; Cloutier, Lyne

    2013-01-01

    Résumé Objectif Présenter des recommandations concernant le dépistage de l’hypertension chez les adultes de 18 ans et plus qui n’ont pas reçu antérieurement de diagnostic d’hypertension. Qualité des données Les données probantes sont tirées d’une recension systématique dans MEDLINE, EMBASE et la base de données des synthèses systématiques de la Collaboration Cochrane (EBM Reviews), de janvier 1985 à septembre 2011. Les types d’études retenues se limitaient aux études randomisées contrôlées, aux synthèses systématiques et aux études observationnelles avec groupes témoins. Message principal Trois fortes recommandations se sont dégagées de données probantes de qualité modérée. Il est recommandé de mesurer la pression artérielle à toutes les consultations appropriées en soins primaires, conformément aux techniques actuelles décrites dans les recommandations du Programme éducatif canadien sur l’hypertension pour la mesure de la pression artérielle en cabinet et en soins ambulatoires. Les critères du Programme éducatif canadien sur l’hypertension pour l’évaluation et le diagnostic de l’hypertension devraient s’appliquer aux personnes chez qui on observe une pression artérielle élevée. Conclusion À la suite d’un examen des plus récentes données probantes, le Groupe d’étude canadien sur les soins de santé préventifs continue de recommander la mesure de la pression artérielle lors des consultations périodiques auprès du médecin.

  6. Realisation d'un detecteur de radioactivite pour un systeme microfluidique

    NASA Astrophysics Data System (ADS)

    Girard Baril, Frederique

    Pour etablir le comportement pharmacocinetique de nouveaux radiotraceurs en imagerie moleculaire, il est necessaire d'approfondir l'analyse realisee a partir d'une image par l'ajout d'une mesure dynamique de la radioactivite dans le sang. L'Universite de Sherbrooke developpe presentement une plateforme microfluidique d'echantillonnage et d'analyse permettant la mesure de la radioactivite du plasma en temps reel. L'objectif du present projet de maitrise etait de realiser le composant optoelectronique responsable de la detection des positrons et de l'integrer a la puce microfluidique. L'option retenue a ete l'utilisation de photodiodes PIN en silicium. Un procede de fabrication, ainsi qu'une serie de photomasques ont ete developpes afin de produire une premiere iteration de prototypes. Les detecteurs ont ete concus de maniere a optimiser leur sensibilite en fonction du type de rayonnement a detecter. En effet, la region de detection doit etre suffisamment epaisse et sensible pour absorber le maximum de particules energetiques. Egalement, il est essentiel de minimiser le courant de fuite en noirceur afin d'obtenir un photocourant directement proportionnel a l'energie des radiations incidentes. Les caracteristiques electriques obtenues avec les premiers detecteurs ont ete demontrees proches des performances de detecteurs commerciaux similaires. De plus, il a ete possible d'integrer un canal microfluidique au substrat contenant les photodiodes et d'en realiser l'encapsulation sans alterer les performances electriques initiales des detecteurs. Une courbe de l'activite radioactive du 18F a ete mesuree, celle-ci se comparant a l'activite theorique associee a ce radioisotope communement utilise en TEP. Enfin, un spectre en energie des emissions radiatives du 18F a ete mesure et compare aux performances de systemes utilisant des photodiodes commerciales. Il a ete demontre que le prototype offrait un rapport signal sur bruit similaire aux systemes bases sur des photodiodes

  7. Êtes-vous prêt pour un code bleu en cabinet?

    PubMed Central

    Moore, Simon

    2015-01-01

    Résumé Problème traité Les urgences médicales sont fréquentes dans le cabinet des médecins de famille, mais nombreux sont ceux qui ne sont pas préparés à répondre aux urgences. Une vidéo éducative en ligne traitant des urgences en cabinet pourrait améliorer la réponse des médecins et de leur personnel aux urgences. Un outil comme celui-là n’a jamais été décrit auparavant. Objectif du programme Utiliser les pratiques fondées sur les données probantes pour produire une vidéo éducative expliquant comment se préparer à parer à une urgence dans un cabinet médical, disséminer la vidéo en ligne et évaluer l’attitude des médecins et de leur personnel à l’égard de la vidéo. Description du programme Une vidéo de 6 minutes a été produite en s’appuyant sur une revue de la littérature récente et des politiques des organismes réglementaires canadiens. La vidéo décrit l’équipement d’urgence recommandé, l’amélioration de la réponse à l’urgence et la formation du personnel en cabinet. Les médecins et leur personnel ont été invités à visualiser la vidéo en ligne à www.OfficeEmergencies.ca. L’opinion de l’auditoire sur le format de la vidéo et son contenu a été évaluée par l’entremise d’un sondage (N = 275). Conclusion Les résultats du sondage indiquent que la vidéo était pertinente et bien présentée, et le format en ligne était pratique et satisfaisant. Les participants s’inscriraient à d’autres formations ayant recours à cette technologie et étaient d’accord pour dire que ce programme améliorerait les soins aux patients.

  8. Project Documerica

    ERIC Educational Resources Information Center

    Journal of College Science Teaching, 1972

    1972-01-01

    The Environmental Protection Agency has started a project to actually picture the environmental movement in the United States. This is an attempt to make the public aware of the air pollution in their area or state and to acquaint them with the effects of air cleaning efforts. (PS)

  9. Project Schoolflight

    ERIC Educational Resources Information Center

    Owen, Ben

    1975-01-01

    Describes "Project School Flight" which is an idea originated by the Experimental Aircraft Association to provide the opportunity for young people to construct a light aircraft in the schools as part of a normal class. Address included of Experimental Aircraft Association for interested persons. (BR)

  10. Project CLASS.

    ERIC Educational Resources Information Center

    McBain, Susan L.; And Others

    Project CLASS (Competency-Based Live-Ability Skills) uses a series of 60 modules to teach life survival skills to adults with low-level reading ability--especially Adult Basic Education/English as a Second Language students. Two versions of the modules have been developed: one for use with teacher-directed instruction and another for independent…

  11. Project Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1979

    1979-01-01

    Listed are 32 biology A-level projects, categorized by organisms studied as follows: algae (1), bryophytes (1), angiosperms (14), fungi (1), flatworms (1), annelids (2), molluscs (1), crustaceans (2), insects (4), fish (2), mammals (1), humans (1); and one synecological study. (CS)

  12. Limnological Projects.

    ERIC Educational Resources Information Center

    Hambler, David J.; Dixon, Jean M.

    1982-01-01

    Describes collection of quantitative samples of microorganisms and accumulation of physical data from a pond over a year. Provides examples of how final-year degree students have used materials and data for ecological projects (involving mainly algae), including their results/conclusions. Also describes apparatus and reagents used in the student…

  13. Hydrosphere Project.

    DTIC Science & Technology

    This final report summarizes the seven foot Hydrosphere Project. During the course of this program, three Interim Reports were submitted. Interim...to the final assembly of the seven foot Hydrosphere . This final report includes a brief outline of each of the above noted Interim Reports, as well as

  14. Project CAST.

    ERIC Educational Resources Information Center

    Charles County Board of Education, La Plata, MD. Office of Special Education.

    The document outlines procedures for implementing Project CAST (Community and School Together), a community-based career education program for secondary special education students in Charles County, Maryland. Initial sections discuss the role of a learning coordinator, (including relevant travel reimbursement and mileage forms) and an overview of…

  15. Project Choice.

    ERIC Educational Resources Information Center

    Ewing Marion Kauffman Foundation, Kansas City, MO.

    Project Choice was begun with the goal of increasing the number of inner-city students who graduate on time. Ewing M. Kauffman and his business and foundation associates designed and elected to test a model that used the promise of postsecondary education or training as the incentive to stay in school. This report details the evolution of Project…

  16. Thanksgiving Project

    ERIC Educational Resources Information Center

    Hilden, Pauline

    1976-01-01

    A teacher describes a Thanksgiving project in which 40 educable mentally retarded students (6-13 years old) made and served their own dinner of stew, butter, bread, ice cream, and pie, and in the process learned about social studies, cooking, and proper meal behavior. (CL)

  17. Project Boomerang

    ERIC Educational Resources Information Center

    King, Allen L.

    1975-01-01

    Describes an experimental project on boomerangs designed for an undergraduate course in classical mechanics. The students designed and made their own boomerangs, devised their own procedures, and carried out suitable measurements. Presents some of their data and a simple analysis for the two-bladed boomerang. (Author/MLH)

  18. Project ENRICH.

    ERIC Educational Resources Information Center

    Gwaley, Elizabeth; And Others

    Project ENRICH was conceived in Beaver County, Pennsylvania, to: (1) identify preschool children with learning disabilities, and (2) to develop a program geared to the remediation of the learning disabilities within a school year, while allowing the child to be enrolled in a regular class situation for the following school year. Through…

  19. Project Succeed.

    ERIC Educational Resources Information Center

    Patterson, John

    Project Succeed is a program for helping failure- and dropout-oriented pupils to improve their school achievement. Attendance and assignment completion are the key behaviors for enhancing achievement. Behavior modification and communications procedures are used to bring about the desired changes. Treatment procedures include current assessment…

  20. Project Reconstruct.

    ERIC Educational Resources Information Center

    Helisek, Harriet; Pratt, Donald

    1994-01-01

    Presents a project in which students monitor their use of trash, input and analyze information via a database and computerized graphs, and "reconstruct" extinct or endangered animals from recyclable materials. The activity was done with second-grade students over a period of three to four weeks. (PR)

  1. Project Narrative

    SciTech Connect

    Driscoll, Mary C.

    2012-07-12

    The Project Narrative describes how the funds from the DOE grant were used to purchase equipment for the biology, chemistry, physics and mathematics departments. The Narrative also describes how the equipment is being used. There is also a list of the positive outcomes as a result of having the equipment that was purchased with the DOE grant.

  2. Project Notes

    ERIC Educational Resources Information Center

    School Science Review, 1977

    1977-01-01

    Listed and described are student A-level biology projects in the following areas: Angiosperm studies (e.g., factors affecting growth of various plants), 7; Bacterial studies, 1; Insect studies, 2; Fish studies, 1; Mammal studies, 1; Human studies, 1; Synecology studies, 2; Environmental studies, 2; and Enzyme studies, 1. (CS)

  3. Etude d'un systeme de recuperation et de stockage de chaleur pour un systeme eolien-diesel avec stockage d'air comprime

    NASA Astrophysics Data System (ADS)

    Remillon, Thibaut

    La recherche presentee dans ce memoire porte sur les systemes hybrides eolien-diesel avec stockage d'air comprime (SHEDAC) adaptes a la production d'electricite en sites isoles, et plus precisement sur l'apport d'un systeme de recuperation et de stockage de chaleur (TES) au fonctionnement de ces systemes. Le principe de fonctionnement est le suivant. Quand la puissance eolienne est excedentaire par rapport aux besoins de la charge, le surplus d'energie est utilise pour comprimer de l'air. De ce processus resulte un rechauffement de l'air, on choisit d'extraire et de stocker la chaleur separement. Lors de la phase de restitution d'energie, l'air comprime utilise pour suralimenter le moteur thermique est rechauffe en utili sant la chaleur stockee precedemment. Tout au long de l'etude, nous avons seulement pris en compte la chaleur provenant du processus de compression de l'air, et neglige en tous points du systeme les echanges de chaleur avec le milieu exterieur. Pour quantifier l'apport du systeme de stockage de chaleur, nous avons tout d'abord mene une etude bibliographique sur ces systemes, pour identifier les meilleures solutions disponibles. Ensuite, on a modelise une de ces solutions sous Simulink pour etudier son fonctionnement de maniere plus precise. D'autre part, on a modelise un systeme de stockage de chaleur ideal pour quantifier l'apport maximal d'un TES sur les performances du SHEDAC. Nous avons conclu que les TES les plus adaptes aux systemes SHEDAC etaient les solutions actives directes a deux reservoirs, et que, pour beneficier au maximum du systeme de stockage de chaleur, il etait interessant de realiser la detente de l'air comprime stocke dans un moteur a air comprime, pour maximiser la recuperation d'energie mecanique.

  4. 2010 Coalition Battle Management Language Workshop (Atelier 2010 sur le langage de gestion du champ de bataille pour les operations en coalition)

    DTIC Science & Technology

    2010-02-01

    Feb 2010 2010 Coalition Battle Management Language Workshop (Atelier 2010 sur le langage de gestion du champ de bataille pour les opérations en...RTO MEETING PROCEEDINGS MP-MSG-079 2010 Coalition Battle Management Language Workshop (Atelier 2010 sur le langage de gestion du champ de...RTO-MP-MSG-079 ES - 3 Atelier 2010 sur le langage de gestion du champ de bataille pour les opérations en coalition (RTO-MP-MSG-079

  5. Suitable Learning Styles for Intelligent Tutoring Technologies (Styles d’Apprentissage Appropries pour les Technologies Tuteurs Intelligents)

    DTIC Science & Technology

    2010-05-01

    des tuteurs intelligents. Pour rendre la technologie efficace dans un environnement de formation à distance, les styles d’apprentissage de chaque...psychometric test itself found that the internal consistency and factorial validity of the categories, properties and boundaries of the modeled...circumstances where reliability has not been confirmed ( internally or by independent reviewers), a discussion on its constructs and factors’ validity is

  6. Lignes directrices pour le suivi des cardiostimulateurs au canada : consensus du groupe de travail canadien sur la cardiostimulation

    PubMed

    D Fraser JD; M Gillis AM; Irwin; Nishimura; Tyers; Philippon

    2000-03-01

    Un sondage sur les pratiques de cardiostimulation au Canada effectue en 1997 a revele un profond desir pour des lignes directrices nationales sur le suivi des cardiostimulateurs. Ces lignes directrices sur le suivi des cardiostimulateurs representent une declaration de consensus du Groupe de travail canadien sur la cardiostimulation. Le suivi des patients en personne plutot que par moyens transtelephoniques est preferable. Les patients devraient etre examines au minimum dans les 72 heures suivant l'implantation, 2 a 12 semaines et 6 mois apres l'implantation, et annuellement par la suite. Des examens plus frequents peuvent etre requis pour certains patients. Ceci dependra des problemes cardiovasculaires associes et des appareils en particulier. Une visite de suivi typique devrait comprendre un examen cardiovasculaire oriente, l'interrogation du systeme de cardiostimulation et une revue des donnees de telemetrie, un examen du rythme sous-jacent, un examen des seuils de stimulation et de detection et une reprogrammation adequate des parametres pour optimaliser le fonctionnement et la longevite de l'appareil.

  7. Appel pour une allocation intelligente dans le financement du système de santé au Cameroun

    PubMed Central

    Sieleunou, Isidore

    2011-01-01

    Le Cameroun utilise un système de budgétisation historique et une approche «top-down» pour allouer ses ressources de santé publique. Cependant, le pays compte 175 districts de santé dont les fortes disparités de nature épidémiologique, économique, géographique et culturelle, devraient être prises en compte pour réduire les iniquités en matière de sante publique. Comment comprendre alors que dans ces conditions, le budget des administrations publiques alloué aux différents districts de santé au Cameroun soit quasi identique alors que les défis sont si différents? L'inefficience allocative (mauvaise attribution du budget) générée par un tel système conduit vraisemblablement à une inefficience technique (mauvaise utilisation du budget). Pour la marche vers l'atteinte des objectifs du millénaire en matière de sante, il est impératif et urgent que les décideurs du secteur de la santé allouent de manière intelligente les ressources dans le système de santé. PMID:22355420

  8. Effects of Mold Temperature and Pouring Temperature on the Hot Tearing of Cast Al-Cu Alloys

    NASA Astrophysics Data System (ADS)

    Li, Shimin; Sadayappan, Kumar; Apelian, Diran

    2016-10-01

    The effects of mold temperature and pouring temperature on hot tearing formation and contraction behavior of a modified Al-Cu alloy 206 (M206) have been studied. The experiments were conducted using a newly developed Constrained Rod Mold, which simultaneously measures the contraction force/time/temperature during solidification for the restrained casting or linear contraction/time/temperature for a relaxed casting. Three mold temperatures [473 K, 573 K, and 643 K (200 °C, 300 °C, and 370 °C)] and three pouring temperatures [superheat of 50 K, 100 K, and 150 K (50 °C, 100 °C, and 150 °C)] were studied, and alloy A356 was used as reference for comparison. The results confirm that alloy A356 has high resistance to hot tearing. Hot tearing did not occur for the three mold temperatures evaluated, whereas alloy M206 exhibited significant hot tearing for the same casting and mold temperature conditions. Hot tearing severity and linear contraction in alloy 206 decreased significantly with increasing mold temperature. Increasing pouring temperature increases hot tearing in alloy M206, but the effect is not as significant as that of mold temperature. The results and underlying mechanism of these effects are discussed in correlation with the thermomechanical properties and microstructures.

  9. Technology for Evolutionary Software Development (Technologies pour le developpement de logiciels evolutifs)

    DTIC Science & Technology

    2003-06-01

    how ‘open’ the system architecture is for ‘change’. These are things like adaptability, maintainability, portability8, and testability. • Develop...successfully to software development projects in the past, this approach is not suitable for commercial projects in the era of e-business where things ...simply because things do not perform as desired in practice. These changes are usually shifted into maintenance and upgrade phases of the project. • As

  10. Letter Report. Defense Waste Processing Facility Pour Spout Heaters - Conceptual Designs and Modeling

    SciTech Connect

    SK Sundaram; JM Perez, Jr.

    2000-09-06

    The Tanks Focus Area (TFA) identified a major task to address performance limitations and deficiencies of the Defense Waste Processing Facility (DWPF) now in its sixth year of operation. Design, installation, testing, monitoring, operability, and a number of other characteristics were studied by research personnel collaboratively at a number of facilities: Savannah River Technology Center (SRTC), Clemson Environmental Technologies Laboratory (CETL), Pacific Northwest National Laboratory (PNNL), and the Idaho National Engineering and Environmental Laboratory (INEEL). Because the potential limiting feature to the DWPF was identified as the pour spout/riser heater, researches on alternative design concepts originally proposed in the past were revisited. In the original works, finite element modeling was performed to evaluate temperature distribution and stress of the design currently used at the DWPF. Studies were also made to define the requirements of the design and to consider the approaches for remote removal/replacement. Their heater type/location, their remotely replaceable thermocouples, and their capabilities for remote handling characterized the five alternative designs proposed. Review comments on the alternative designs indicated a relatively wide range of advantages and disadvantages of the designs. The present report provides an overview of the design criteria, modeling results, and alternative designs. Based on a review of the past design optimization activities and an assessment of recent experience, recommendations are proposed for future consideration and improvement.

  11. Des recommandations pour prévenir l’ophtalmie néonatale

    PubMed Central

    2002-01-01

    Malgré la prévalence décroissante de Neisseria gonorrhoeae au Canada, la Société canadienne de pédiatrie recommande que, le plus tôt possible après la naissance, tous les nourrissons reçoivent un traitement prophylactique de nitrate d’argent, de tétracycline ou d’érythromycine, afin de réduire le risque d’ophtalmie néonatale causée par cet organisme. Le recours à ces agents peut également se révéler bénéfique pour prévenir l’ophtalmie causée par d’autres organismes. De plus, la Société canadienne de pédiatrie appuie le dépistage prénatal systématique de N gonorrhoeae et de Chlamydia trachomatis, de même que le traitement des infections dépistées pendant la grossesse.

  12. Un nouveau film conducteur poly(aminoquinone) pour le stockage de l'énergie

    NASA Astrophysics Data System (ADS)

    Piro, B.; Pham, M. C.; Bazzaoui, E. A.; Lacroix, J.-C.; Lacaze, P.-C.; Novak, P.; Hass, O.

    1998-06-01

    The electrooxidation of 5-amino-1,4-naphthoquinone (ANQ) in acetonitrile leads to conducting (10-1 S.cm-1) functionalized polymer films of polyaniline- type bearing one quinone group per ANQ moiety, electroactive in organic or aqueous solvents. The polymer exchanges cations during the redox process of quinones and is therefore interesting for lithium ions batteries devices. The measured specific charge is particularly hight with about 290 Ah/kg. L'oxydation électrochimique du 5-amino-1,4-naphtoquinone (ANQ) dans l'acétonitrile conduit à la formation de films conducteurs (10-1 S.cm-1) fonctionnalisés de structure type polyaniline portant une fonction quinone par motif ANQ, qui sont électroactifs en milieu aqueux comme en milieu organique. Le polymère échange des cations au cours du processus rédox des quinones et est ainsi intéressant pour les applications dans les accumulateurs au lithium. La charge spécifique mesurée de ce polymère est particulièrement élevée avec environ 290 Ah/kg.

  13. Lambeaux autofermants pour le traitement des brulures electriques du scalp par haut voltage

    PubMed Central

    Hafidi, J.; El Mazouz, S.; El Mejatti, H.; Fejjal, N.; Gharib, N.E.; Abbassi, A.; Belmahi, A.M.

    2011-01-01

    Summary Les brûlures électriques par haut voltage sont responsables de gros dégâts tissulaires en immédiat et dans les jours suivant l’accident du fait de la chaleur importante dégagée par effet joule et de la thrombose microvasculaire évolutive. Les pertes de substances du scalp secondaires à ces brûlures nécessitent une couverture par lambeaux vu la destruction du périoste et du calvarium en regard. De juin 1997 à juin 2008, 15 patients ont été traités pour des pertes de substance du scalp secondaires à des brûlures électriques par haut voltage de diamètre allant de 8 à 11 cm et siégeant dans la région tonsurale. Ces patients ont été opérés dans la première semaine suivant l’accident. Les pertes de substance du scalp de taille moyenne secondaires à ces brûlures peuvent être couvertes per primam de façon fiable par des lambeaux locaux axialisés et multiples. Nous relatons l’expérience du Service de Chirurgie Plastique du Centre Hospitalier Universitaire Ibn-Sina, Rabat, Maroc, dans la gestion et la prise en charge de ces brûlures. PMID:22262963

  14. QUELS FUTURS TRAITEMENTS POUR LA DEPENDANCE AU TABAC ET AU CANNABIS?

    PubMed Central

    LE FOLL, Bernard; JUSTINOVA, Zuzana; TANDA, Gianlugi; GOLDBERG, Steven R.

    2009-01-01

    RESUME Plus de trois millions de morts sont attribués au tabagisme dans le monde par an, et l’usage de tabac est en progression dans les pays en voie de développement. L’usage de tabac est donc une des rares causes de mortalité qui augmente, avec une prévision de plus de 10 millions de morts par an dans 30–40 ans. Le cannabis ou marijuana est la drogue illicite la plus consommée dans le monde et il n’y a actuellement pas de traitement disponible. Bien que les systèmes dopaminergiques jouent un rôle central dans les effets renforçants des drogues, d’autres systèmes sont impliqués. Nous présentons ici des résultats récents obtenus avec des antagonistes des récepteurs cannabinoides CB1, des récepteurs D3 de la dopamine et des récepteurs opioïdes. Ces antagonistes qui modulent de façon directe ou indirecte la transmission dopaminergique cérébrale représentent des approches prometteuses pour le traitement du tabagisme ou de la dépendance au cannabis. Ces approches sont à valider dans des essais cliniques. PMID:18663981

  15. Uranyl nitrate pouring solution for producing nuclear fuel particles and a method for its preparation

    SciTech Connect

    Hein, K.

    1983-05-24

    Sorbitol, or another polyalcohol such as erythritol, dulcitol or xylitol, is added to a solution containing uranyl nitrate which may also contain another heavy metal, such as thorium or plutonium, prior to preneutralization with ammonia in order to provide a highly viscous solution that can be preneutralized to a great extent without premature precipitation of uranium. The high viscosity makes possible the formation of favorably large drops when the solution is dripped into an ammonia containing bath for external gelification of the drops. According to the pouring apparatus used, the particles after washing, drying and sintering have a diameter between 0.6 and 1.5 mm. The polyalcohol is added to a hydrosol containing from 1.5 to 2 moles per liter of heavy metal, the polyalcohol being added until concentration of onethird mole of polyalcohol per mole of heavy metal is reached. In certain cases up to four moles of ammonium nitrate per liter are added. The solution so produced can be preneutralized with up to 90% of the amount of ammonia stoichiometrically necessary for T separation of uranium without the formation of any precipitate, preferably by first adding ammonia gas under strong stirring and then adding ammonium bicarbonate in excess, which decomposes to liberate ammonia to an extent determined by the temperature, which is to be precisely controlled. It is possible to obtain this way a solution of predetermined viscosity from which the excess ammonium bicarbonate can readily be separated.

  16. La planification préalable des soins pour les patients en pédiatrie

    PubMed Central

    2008-01-01

    RÉSUMÉ Les progrès médicaux et technologiques ont permis d’ac-croître les taux de survie et d’améliorer la qualité de vie des nourrissons, des enfants et des adolescents ayant des maladies chroniques mettant la vie en danger. La planifi-cation préalable des soins inclut le processus relié aux discussions sur les traitements essentiels au maintien de la survie et la détermination des objectifs des soins de longue durée. Les dispensateurs de soins pédiatriques ont l’obligation éthique d’assimiler cet aspect des soins médicaux. Le présent document de principes vise à aider les dispensateurs de soins à discuter de la planification préalable des soins des patients pédiatriques dans diverses situations. La planification préalable des soins exige des communications efficaces afin de clarifier les objectifs des soins et de s’entendre sur les traitements pertinents ou non pour réaliser ces objectifs, y compris les mesures de réanimation et les mesures palliatives.

  17. ANALYTICAL RESULTS OF MOX COLEMANITE CONCRETE SAMPLES POURED AUGUST 29, 2012

    SciTech Connect

    Best, D.; Cozzi, A.; Reigel, M.

    2012-12-20

    The Mixed Oxide Fuel Fabrication Facility (MFFF) will use colemanite bearing concrete neutron absorber panels credited with attenuating neutron flux in the criticality design analyses and shielding operators from radiation. The Savannah River National Laboratory is tasked with measuring the total density, partial hydrogen density, and partial boron density of the colemanite concrete. Samples poured 8/29/12 were received on 9/20/2012 and analyzed. The average total density of each of the samples measured by the ASTM method C 642 was within the lower bound of 1.88 g/cm{sup 3}. The average partial hydrogen density of samples 8.6.1, 8.7.1, and 8.5.3 as measured using method ASTM E 1311 met the lower bound of 6.04E-02 g/cm{sup 3}. The average measured partial boron density of each sample met the lower bound of 1.65E-01 g/cm{sup 3} measured by the ASTM C 1301 method. The average partial hydrogen density of samples 8.5.1, 8.6.3, and 8.7.3 did not meet the lower bound. The samples, as received, were not wrapped in a moist towel as previous samples and appeared to be somewhat drier. This may explain the lower hydrogen partial density with respect to previous samples.

  18. ANALYTICAL RESULTS OF MOX COLEMANITE CONCRETE SAMPLES POURED AUGUST 29, 2012

    SciTech Connect

    Cozzi, A.; Best, D.; Reigel, M.

    2012-10-30

    The Mixed Oxide Fuel Fabrication Facility (MFFF) will use colemanite bearing concrete neutron absorber panels credited with attenuating neutron flux in the criticality design analyses and shielding operators from radiation. The Savannah River National Laboratory is tasked with measuring the total density, partial hydrogen density, and partial boron density of the colemanite concrete. Samples poured 8/29/12 were received on 9/20/2012 and analyzed. The average total density of each of the samples measured by the ASTM method C 642 was within the lower bound of 1.88 g/cm{sup 3}. The average partial hydrogen density of samples 8.6.1, 8.7.1, and 8.5.3 as measured using method ASTM E 1311 met the lower bound of 6.04E-02 g/cm{sup 3}. The average measured partial boron density of each sample met the lower bound of 1.65E-01 g/cm{sup 3} measured by the ASTM C 1301 method. The average partial hydrogen density of samples 8.5.1, 8.6.3, and 8.7.3 did not meet the lower bound. The samples, as received, were not wrapped in a moist towel as previous samples and appeared to be somewhat drier. This may explain the lower hydrogen partial density with respect to previous samples.

  19. Sondes radicalaires pour l'imagerie RPE et PDN stables dans les fluides biologiques

    NASA Astrophysics Data System (ADS)

    Guiberteau, T.; Marx, L.; Rassat, A.; Grucker, D.

    1999-10-01

    Electron paramagnetic resonance and dynamic nuclear polarisation are two techniques that allow the detection of free radicals. They can also be used for in vivo studies for oximetry in blood or tissues. One of the main problems for the development of these techniques is the need of free radicals that are stable in biological media. We present in this communication a study by EPR and DNP of two free radicals that can be suitable for in vivo applications. La résonance paramagnétique électronique et la polarisation dynamique nucléaire sont deux techniques qui permettent de détecter les radicaux libres dans divers systèmes. Elles peuvent également être utilisées in vivo et permettre ainsi de mesurer la concentration en oxygène dans le sang ou dans les tissus. Un des problèmes de ces techniques est l'utilisation de sondes radicalaires suffisamment stables dans les milieux biologiques. Nous présentons une étude comparative par RPE et PDN de deux radicaux libres de type nitroxydes dérivés de l'isoindoline. Un des radicaux possédant quatre groupements éthyle semble être intéressant pour le développement de la RPE et la PDN in vivo.

  20. Analysis Of DWPF Sludge Batch 7a (Macrobatch 8) Pour Stream Samples

    SciTech Connect

    Johnson, F. C.; Pareizs, J. M.

    2012-10-24

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 7a (SB7a), also referred to as Macrobatch 8 (MB8), in June 2011. SB7a is a blend of the heel of Tank 40 from Sludge Batch 6 (SB6) and the SB7a material that was transferred to Tank 40 from Tank 51. SB7a was processed using Frit 418. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program (GPCP), which is governed by the DWPF Waste Compliance Plan, and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. Three pour stream glass samples and two Melter Feed Tank (MFT) slurry samples were collected while processing SB7a. These additional samples were taken during SB7a to understand the impact of antifoam and the melter bubblers on glass redox chemistry. The samples were transferred to the Savannah River National Laboratory (SRNL) where they were analyzed.

  1. Cognitive Education Project. Summary Project.

    ERIC Educational Resources Information Center

    Mulcahy, Robert; And Others

    The Cognitive Education Project conducted a 3-year longitudinal evaluation of two cognitive education programs that were aimed at teaching thinking skills. The critical difference between the two experimental programs was that one, Feuerstein's Instrumental Enrichment (IE) method, was taught out of curricular content, while the other, the…

  2. Project Prometheus

    NASA Technical Reports Server (NTRS)

    Johnson, Steve

    2003-01-01

    Project Prometheus will enable a new paradigm in the scientific exploration of the Solar System. The proposed JIMO mission will start a new generation of missions characterized by more maneuverability, flexibility, power and lifetime. Project Prometheus organization is established at NASA Headquarters: 1.Organization established to carry out development of JIMO, nuclear power (radioisotope), and nuclear propulsion research. 2.Completed broad technology and national capacity assessments to inform decision making on planning and technology development. 3.Awarded five NRA s for nuclear propulsion research. 4.Radioisotope power systems in development, and Plutonium-238 being purchased from Russia. 5.Formulated science driven near-term and long-term plan for the safe utilization of nuclear propulsion based missions. 6.Completed preliminary studies (Pre-Phase A) of JIMO and other missions. 7.Initiated JIMO Phase A studies by Contractors and NASA.

  3. Project summaries

    NASA Technical Reports Server (NTRS)

    1990-01-01

    Lunar base projects, including a reconfigurable lunar cargo launcher, a thermal and micrometeorite protection system, a versatile lifting machine with robotic capabilities, a cargo transport system, the design of a road construction system for a lunar base, and the design of a device for removing lunar dust from material surfaces, are discussed. The emphasis on the Gulf of Mexico project was on the development of a computer simulation model for predicting vessel station keeping requirements. An existing code, used in predicting station keeping requirements for oil drilling platforms operating in North Shore (Alaska) waters was used as a basis for the computer simulation. Modifications were made to the existing code. The input into the model consists of satellite altimeter readings and water velocity readings from buoys stationed in the Gulf of Mexico. The satellite data consists of altimeter readings (wave height) taken during the spring of 1989. The simulation model predicts water velocity and direction, and wind velocity.

  4. Hydropower Projects

    SciTech Connect

    2015-04-02

    The Water Power Program helps industry harness this renewable, emissions-free resource to generate environmentally sustainable and cost-effective electricity. Through support for public, private, and nonprofit efforts, the Water Power Program promotes the development, demonstration, and deployment of advanced hydropower devices and pumped storage hydropower applications. These technologies help capture energy stored by diversionary structures, increase the efficiency of hydroelectric generation, and use excess grid energy to replenish storage reserves for use during periods of peak electricity demand. In addition, the Water Power Program works to assess the potential extractable energy from domestic water resources to assist industry and government in planning for our nation’s energy future. From FY 2008 to FY 2014, DOE’s Water Power Program announced awards totaling approximately $62.5 million to 33 projects focused on hydropower. Table 1 provides a brief description of these projects.

  5. SIMBIOS Project

    NASA Technical Reports Server (NTRS)

    Fargion, Giulietta S.; McClain, Charles R.; Busalacchi, Antonio J. (Technical Monitor)

    2001-01-01

    The purpose of this technical report is to provide current documentation of the Sensor Intercomparison and Merger for Biological and Interdisciplinary Oceanic Studies (SIMBIOS) Project activities, NASA Research Announcement (NRAI) research status, satellite data processing, data product validation, and field calibration. This documentation is necessary to ensure that critical information is related to the scientific community and NASA management. This critical information includes the technical difficulties and challenges of validating and combining ocean color data from an array of independent satellite systems to form consistent and accurate global bio-optical time series products. This technical report is not meant as a substitute for scientific literature. Instead, it will provide a ready and responsive vehicle for the multitude of technical reports issued by an operational project.

  6. Project MEDSAT

    NASA Astrophysics Data System (ADS)

    During the winter term of 1991, two design courses at the University of Michigan worked on a joint project, MEDSAT. The two design teams consisted of the Atmospheric, Oceanic, and Spacite System Design and Aerospace Engineering 483 (Aero 483) Aerospace System Design. In collaboration, they worked to produce MEDSAT, a satellite and scientific payload whose purpose was to monitor environmental conditions over Chiapas, Mexico. Information gained from the sensing, combined with regional data, would be used to determine the potential for malaria occurrence in that area. The responsibilities of AOSS 605 consisted of determining the remote sensing techniques, the data processing, and the method to translate the information into a usable output. Aero 483 developed the satellite configuration and the subsystems required for the satellite to accomplish its task. The MEDSAT project is an outgrowth of work already being accomplished by NASA's Biospheric and Disease Monitoring Program and Ames Research Center. NASA's work has been to develop remote sensing techniques to determine the abundance of disease carriers and now this project will place the techniques aboard a satellite. MEDSAT will be unique in its use of both a Synthetic Aperture Radar and visual/IR sensor to obtain comprehensive monitoring of the site. In order to create a highly feasible system, low cost was a high priority. To obtain this goal, a light satellite configuration launched by the Pegasus launch vehicle was used.

  7. Project MEDSAT

    NASA Technical Reports Server (NTRS)

    1991-01-01

    During the winter term of 1991, two design courses at the University of Michigan worked on a joint project, MEDSAT. The two design teams consisted of the Atmospheric, Oceanic, and Spacite System Design and Aerospace Engineering 483 (Aero 483) Aerospace System Design. In collaboration, they worked to produce MEDSAT, a satellite and scientific payload whose purpose was to monitor environmental conditions over Chiapas, Mexico. Information gained from the sensing, combined with regional data, would be used to determine the potential for malaria occurrence in that area. The responsibilities of AOSS 605 consisted of determining the remote sensing techniques, the data processing, and the method to translate the information into a usable output. Aero 483 developed the satellite configuration and the subsystems required for the satellite to accomplish its task. The MEDSAT project is an outgrowth of work already being accomplished by NASA's Biospheric and Disease Monitoring Program and Ames Research Center. NASA's work has been to develop remote sensing techniques to determine the abundance of disease carriers and now this project will place the techniques aboard a satellite. MEDSAT will be unique in its use of both a Synthetic Aperture Radar and visual/IR sensor to obtain comprehensive monitoring of the site. In order to create a highly feasible system, low cost was a high priority. To obtain this goal, a light satellite configuration launched by the Pegasus launch vehicle was used.

  8. Etude de la transition tribologique entre le fretting et le meso-fretting pour des materiaux de contact electrique

    NASA Astrophysics Data System (ADS)

    Gagnon, Daniel

    Dans les installations electriques, les contacts sont toujours soumis a des contraintes alternees ou a des micro-deplacements. Il en resulte une corrosion par fretting, phenomene defini comme un type de deterioration de la surface qui se produit lorsque deux materiaux en contact sont soumis a des mouvements microscopiques d'oscillations de tres faible amplitude (0 a 100 mum). Ceci a pour effet de provoquer une degradation de la resistance de contact et une interruption du passage du courant. Ce phenomene a des repercussions considerables sur le plan pratique puisque les micro-deplacements de pieces en contact peuvent etre causes par la dilatation thermique differentielle des metaux, par des vibrations mecaniques, par la relaxation des contraintes ou par l'echauffement des contacts lorsqu'on interrompt et retablit le courant. Nous avons donc dans le cadre de cette these etudie plusieurs aspects du fretting (0--100 mum) et du meso-fretting (100 a 1000 mum) pour differents materiaux de contact electrique. Des travaux experimentaux ont ete realises a partir de deux montages reproduisant divers aspects de la degradation par le fretting. Un premier montage de fretting de type bille-plaque a ete entierement developpe a l'ETS et un second montage, de type fil-plaque a ete utilise en collaboration avec Hydro Quebec IREQ a Varennes. Plusieurs techniques de mesures et d'analyse relevant tant du domaine de la mecanique du contact que de la metallurgie ont ete utilisees pour traiter les resultats. L'influence du courant sur le taux d'usure et la force de friction a ete examinee pour divers materiaux de contacts. Des essais de fatigue thermique et electrique ont ete realises sur divers materiaux et lubrifiants de contact. Il a ete demontre que pour le domaine entre 100 mum et 1000 mum, le taux d'usure n'est pas le meme de 0 a 100 mum et au dela de 1000 mum. La plupart des materiaux evalues montrent un stade de comportement intermediaire dont le debut se situe entre 100 mum et

  9. Prise en charge des complications des fistules artério-veineuses pour hémodialyse chronique

    PubMed Central

    Jiber, Hamid; Zrihni, Youssef; Zaghloul, Rachid; Hajji, Rita; Zizi, Othman; Bouarhroum, Abdellatif

    2015-01-01

    La fistule artério-veineuse native est l'accès vasculaire de choix pour l'hémodialyse chronique en raison de sa longévité, son taux faible de complication et de mortalité par rapport aux pontages artério-veineux et aux cathéters. Cependant, il arrive assez souvent que l'on assiste à des complications qui sont dominées par la sténose et la thrombose. C'est une étude rétrospective des complications ayants survenues pour 31 fistules artério-veineuses pour hémodialyse chronique des 200 fistules réalisées chez 200 patients au sein du service de chirurgie vasculaire du CHU Hassan II de Fès sur une période de trois ans, étendue de Janvier 2007 à Décembre 2009. Ces complications ont été présentés par les thromboses dans 14 cas soit 45,15% de l'ensemble des complications, les sténoses dans 4 cas (12,90%,) les anévrismes dans 4 cas (12,90%), les complications ischémiques dans 3 cas (9,67%), l'infection dans 3 cas (9,67%), l'hémorragie dans 2 cas (6,45%) et l’ hyperdébit dans un seul cas soit 3,22%. On a pu conserver 22 fistules soit 70,96% par traitement chirurgical ou endovasculaire, on a confectionné une nouvelle fistule dans 8 cas soit 25,80%, et on a adressé une patiente (3,22%) pour pose d'un cathéter veineux tunnelisé permanent. Les complications des fistules artério-veineuses pour l'hémodialyse chronique sont la principale cause de morbidité chez les patients hémodialysés, il est donc important de s'impliquer lors de leur création, et de donner un maximum d'attention quand ils sont manipulés. Ceci suggère la mise en place d'un programme de surveillance de ces fistules en raison de l'impact des complications sur la morbi-mortalité du patient hémodialysé et sur le plan financier. PMID:26113933

  10. Project Exodus

    NASA Technical Reports Server (NTRS)

    1990-01-01

    Project Exodus is an in-depth study to identify and address the basic problems of a manned mission to Mars. The most important problems concern propulsion, life support, structure, trajectory, and finance. Exodus will employ a passenger ship, cargo ship, and landing craft for the journey to Mars. These three major components of the mission design are discussed separately. Within each component the design characteristics of structures, trajectory, and propulsion are addressed. The design characteristics of life support are mentioned only in those sections requiring it.

  11. Pertinence de l'implantation de la filiere granule de bois pour le Quebec

    NASA Astrophysics Data System (ADS)

    Tremblay, Stephan

    Les spécialistes avancent que le marché mondial de l'énergie en forte demande et en offre limitée nécessitera bientôt toutes les formes d'énergie disponibles. Le granulé de bois est une forme de bioénergie principalement utilisée pour le chauffage des bâtiments et pourrait être davantage considéré dans l'offre énergétique du Québec. Comme le Québec est un territoire où il fait froid et donc susceptible de pouvoir se tourner vers cette forme d'énergie, l'objectif de ce mémoire est d'en analyser les avantages. Pour ce faire, nous commencerons par démontrer la croissance des besoins énergétiques sur les plans national et international et dresser un portrait des différentes formes d'énergies consommées au Québec. Puisque la majorité des Québécois chauffent leurs bâtiments à l'hydroélectricité, nous analyserons à travers le plan d'approvisionnement d'Hydro-Québec le portrait de la production et de la consommation de cette forme d'énergie renouvelable. Cela nous permettra de constater le défi face à la gestion de surplus importants, sauf pendant la période hivernale, et ce faisant, l'obligation de la société d'État d'utiliser davantage ses centrales au gaz ou de se tourner vers l'importation de l'électricité. Dans la même lignée, un regard sera porté sur les perspectives d'utilisation de l'hydroélectricité sur les plans de la production d'aluminium, de l'exportation et de l'utilisation dans l'électrification des transports au Québec. Cette analyse se fera dans l'objectif de s'interroger sur la pertinence d'utiliser cette source d'énergie dans le chauffage plutôt que dans des secteurs plus créateurs de richesse. Nous poserons ensuite l'hypothèse que le granulé de bois pourrait être un bon substitut à une autre forme d'énergie utilisée dans le chauffage, soit le mazout. Avant de dresser un portrait de ce combustible fossile, nous ferons celui de la production et de la consommation de granulés sur les plans r

  12. Analysis of Sludge Batch 3 (Macrobatch4) DWPF Pour Stream Glass Sample for Canister s02312

    SciTech Connect

    Bannochie, C

    2005-09-01

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 3 (SB3), Macrobatch 4 (MB4) in March 2004 as part of Sludge Receipt and Adjustment Tank (SRAT) Batch 272. Sludge Batch 3 is a blend of the contents Tank 40 remaining from Sludge Batch 2 (SB2), the sludge that was transferred to Tank 40 from Tank 51 and Canyon Np solution additions made directly to Tank 40. The sludge transferred from Tank 51 contained sludges from Tanks 7, 18 and 19 along with precipitated solutions of U, Pu/Gd and Am/Cm from the F and H Canyons. The blend of sludge from Tank 51, Tank 40, and the Canyon additions defines SB3 (or MB4). The sludge slurry is received into the DWPF Chemical Processing Cell (CPC) and is processed through the SRAT and Slurry Mix Evaporator (SME) Tank and fed to the melter. During the processing of each sludge batch, the DWPF is required to take at least one glass sample. This glass sample is taken to meet the objectives of the Glass Product Control Program and complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. Two glass samples were obtained while pouring Canisters S02312 and S02315 which were sent to the Savannah River National Laboratory's (SRNL) Shielded Cells Facility. Sample S02312 was designated for analysis, while sample S02315 was designated for archival storage. This report contains the visual observations of the as-received glass sample, results for the density, chemical composition, the Product Consistency Test (PCT) and the calculated and measured radionuclide results needed for the Production Record for Canister S02312. The following conclusions were drawn from the examination of this DWPF pour stream glass sample: (1) The glass sample taken during the filling of DWPF Canister S02312 weighed 41.69 g and was generally dark and reflective. (2) Minor inclusions, on the order of 1 {micro}m in size, of noble metals were seen in the glass via contained scanning electron

  13. Diagnostic du plasma d'ablation laser pour lacroissance de couches minces

    NASA Astrophysics Data System (ADS)

    Basillais, A.; Benzerga, R.; Le Menn, E.; Mathias, J.; Boulmer-Leborgne, C.; Perrière, J.

    2003-06-01

    Dans ce travail, nous nous sommes intéressés à la croissance de films de nitrure d'aluminium par ablation laser d'une cible d'aluminium assistée par un plasma d'azote créé par une décharge RF. Parallèlement, la spectroscopie d'émission a été largement utilisée pour le diagnostic de la plume plasma et du plasma de décharge RF afin de trouver des informations permettant de suivre le phénomène de croissance et qui seraient la signature d'un film de bonne stœchiométrie et qualité cristalline ou son contraire. Ainsi, l'étude de l'émission de la raie d'oxygène à 777nm dans le plasma d'ablation laser a permis d'expliquer le mécanisme de contamination des films par l'oxygène. De la même façon, nous nous sommes intéressés à l'émission de l'azote atomique dans la plume plasma et proche du substrat, dans la zone sombre où ces espèces participent directement à la croissance du film. Ainsi l'étude parallèle de l'influence des paramètres expérimentaux sur la qualité des films et sur la composition du plasma nous a permis d'optimiser le dispositif expérimental.

  14. Analytical Results of DWPF Glass Sample Taken During Pouring of Canister S01913

    SciTech Connect

    Bannochie, C

    2005-10-01

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 2 (SB2) (Macrobatch 3) in December 2001 as part of Sludge Receipt and Adjustment Tank (SRAT) Batch 208. Macrobatch 3 consists of the contents of Tank 40 and Tank 8 in approximately equal proportions. A glass sample was obtained while pouring Canister S01913 and was sent to the Savannah River National Laboratory (SRNL) Shielded Cells for characterization. This report contains observations of the glass sample, results for the density, the chemical composition, the Product Consistency Test (PCT) and the radionuclide results needed for the Production Record for Canister S01913. The following conclusions are drawn from this work: (1) The glass sample taken during the filling of canister S01913 received at SRNL weighed 33.04 grams and was dark and reflective with no obvious inclusions indicating the glass was homogeneous. (2) The results of the composition for glass sample S01913 are in good agreement ({+-} 15%) with the DWPF SME results for Batch Number 254, the SME Batch that was being fed to the melter when the sample was collected. (3) The calculated WDF was 2.58. (4) Acid dissolution of the glass samples may not have completely dissolved the noble metals rhodium and ruthenium. (5) The PCT results for the glass (normalized boron release of 1.18 g/L) indicate that it is greater than seven standard deviations more durable than the EA glass; thus, the glass meets the waste acceptance criterion for durability. (6) The measured density of the glass was 2.56 {+-} 0.03 g/cm{sup 3}.

  15. Une alternative au cobalt pour la synthese de nanotubes de carbone monoparoi par plasma inductif thermique

    NASA Astrophysics Data System (ADS)

    Carrier, Jean-Francois

    Les nanotubes de carbone de type monoparoi (C-SWNT) sont une classe recente de nanomateriaux qui ont fait leur apparition en 1991. L'interet qu'on leur accorde provient des nombreuses proprietes d'avant-plan qu'ils possedent. Leur resistance mecanique serait des plus rigide, tout comme ils peuvent conduire l'electricite et la chaleur d'une maniere inegalee. Non moins, les C-SWNT promettent de devenir une nouvelle classe de plateforme moleculaire, en servant de site d'attache pour des groupements reactifs. Les promesses de ce type particulier de nanomateriau sont nombreuses, la question aujourd'hui est de comment les realiser. La technologie de synthese par plasma inductif thermique se situe avantageusement pour la qualite de ses produits, sa productivite et les faibles couts d'operation. Par contre, des recherches recentes ont permis de mettre en lumiere des risques d'expositions reliees a l'utilisation du cobalt, comme catalyseur de synthese; son elimination ou bien son remplacement est devenu une preoccupation importante. Quatre recettes alternatives ont ete mises a l'essai afin de trouver une alternative plus securitaire a la recette de base; un melange catalytique ternaire, compose de nickel, de cobalt et d'oxyde d'yttrium. La premiere consiste essentiellement a remplacer la proportion massique de cobalt par du nickel, qui etait deja present dans la recette de base. Les trois options suivantes contiennent de nouveaux catalyseurs, en remplacement au Co, qui sont apparus dans plusieurs recherches scientifiques au courant des dernieres annees: le dioxyde de zircone (ZrO2), dioxyde de manganese (MnO2) et le molybdene (Mo). La methode utilisee consiste a vaporiser la matiere premiere, sous forme solide, dans un reacteur plasma a haute frequence (3 MHz) a paroi refroidi. Apres le passage dans le plasma, le systeme traverse une section dite de "croissance", isolee thermiquement a l'aide de graphite, afin de maintenir une certaine plage de temperature favorable a la

  16. SIMBIOS Project

    NASA Technical Reports Server (NTRS)

    Fargion, Giulietta S.; McClain, Charles R.

    2002-01-01

    The purpose of this technical report is to provide current documentation of the Sensor Intercomparison and Merger for Biological and Interdisciplinary Oceanic Studies (SIMBIOS) Project activities, NASA Research Announcement (NRA) research status, satellite data processing, data product validation, and field calibration. This documentation is necessary to ensure that critical information is related to the scientific community and NASA management. This critical information includes the technical difficulties and challenges of validating and combining ocean color data from an array of independent satellite systems to form consistent and accurate global bio-optical time series products. This technical report is not meant as a substitute for scientific literature. Instead, it will provide a ready and responsive vehicle for the multitude of technical reports issued by an operational project. The SIMBIOS Science Team Principal Investigators' (PIs) original contributions to this report are in chapters four and above. The purpose of these contributions is to describe the current research status of the SIMBIOS-NRA-96 funded research. The contributions are published as submitted, with the exception of minor edits to correct obvious grammatical or clerical errors.

  17. Project Exodus

    NASA Technical Reports Server (NTRS)

    Bryant, Rodney (Compiler); Dillon, Jennifer (Compiler); Grewe, George (Compiler); Mcmorrow, Jim (Compiler); Melton, Craig (Compiler); Rainey, Gerald (Compiler); Rinko, John (Compiler); Singh, David (Compiler); Yen, Tzu-Liang (Compiler)

    1990-01-01

    A design for a manned Mars mission, PROJECT EXODUS is presented. PROJECT EXODUS incorporates the design of a hypersonic waverider, cargo ship and NIMF (nuclear rocket using indigenous Martian fuel) shuttle lander to safely carry out a three to five month mission on the surface of Mars. The cargo ship transports return fuel, return engine, surface life support, NIMF shuttle, and the Mars base to low Mars orbit (LMO). The cargo ship is powered by a nuclear electric propulsion (NEP) system which allows the cargo ship to execute a spiral trajectory to Mars. The waverider transports ten astronauts to Mars and back. It is launched from the Space Station with propulsion provided by a chemical engine and a delta velocity of 9 km/sec. The waverider performs an aero-gravity assist maneuver through the atmosphere of Venus to obtain a deflection angle and increase in delta velocity. Once the waverider and cargo ship have docked the astronauts will detach the landing cargo capsules and nuclear electric power plant and remotely pilot them to the surface. They will then descend to the surface aboard the NIMF shuttle. A dome base will be quickly constructed on the surface and the astronauts will conduct an exploratory mission for three to five months. They will return to Earth and dock with the Space Station using the waverider.

  18. Project Explorer

    NASA Technical Reports Server (NTRS)

    Dannenberg, K. K.; Henderson, A.; Lee, J.; Smith, G.; Stluka, E.

    1984-01-01

    PROJECT EXPLORER is a program that will fly student-developed experiments onboard the Space Shuttle in NASA's Get-Away Special (GAS) containers. The program is co-sponsored by the Alabama Space and Rocket Center, the Alabama-Mississippi Section of the American Institute of Aeronautics and Astronautics, Alabama A&M University and requires extensive support by the University of Alabama in Huntsville. A unique feature of this project will demonstrate transmissions to ground stations on amateur radio frequencies in English language. Experiments Nos. 1, 2, and 3 use the microgravity of space flight to study the solidification of lead-antimony and aluminum-copper alloys, the growth of potassium-tetracyanoplatinate hydrate crystals in an aqueous solution, and the germination of radish seeds. Flight results will be compared with Earth-based data. Experiment No. 4 features radio transmission and will also provide timing for the start of all other experiments. A microprocessor will obtain real-time data from all experiments as well as temperature and pressure measurements taken inside the canister. These data will be transmitted on previously announced amateur radio frequencies after they have been converted into the English language by a digitalker for general reception.

  19. PORTNUS Project

    SciTech Connect

    Loyal, Rebecca E.

    2015-07-14

    The objective of the Portunus Project is to create large, automated offshore ports that will the pace and scale of international trade. Additionally, these ports would increase the number of U.S. domestic trade vessels needed, as the imported goods would need to be transported from these offshore platforms to land-based ports such as Boston, Los Angeles, and Newark. Currently, domestic trade in the United States can only be conducted by vessels that abide by the Merchant Marine Act of 1920 – also referred to as the Jones Act. The Jones Act stipulates that vessels involved in domestic trade must be U.S. owned, U.S. built, and manned by a crew made up of U.S. citizens. The Portunus Project would increase the number of Jones Act vessels needed, which raises an interesting economic concern. Are Jones Act ships more expensive to operate than foreign vessels? Would it be more economically efficient to modify the Jones Act and allow vessels manned by foreign crews to engage in U.S. domestic trade? While opposition to altering the Jones Act is strong, it is important to consider the possibility that ship-owners who employ foreign crews will lobby for the chance to enter a growing domestic trade market. Their success would mean potential job loss for thousands of Americans currently employed in maritime trade.

  20. Systeme microfluidique d'analyse sanguine en temps reel pour l'imagerie moleculaire chez le petit animal

    NASA Astrophysics Data System (ADS)

    Convert, Laurence

    De nouveaux radiotraceurs sont continuellement développés pour améliorer l'efficacité diagnostique en imagerie moléculaire, principalement en tomographie d'émission par positrons (TEP) et en tomographie d'émission monophotonique (TEM) dans les domaines de l'oncologie, de la cardiologie et de la neurologie. Avant de pouvoir être utilisés chez les humains, ces radiotraceurs doivent être caractérisés chez les petits animaux, principalement les rats et les souris. Pour cela, de nombreux échantillons sanguins doivent être prélevés et analysés (mesure de radioactivité, séparation de plasma, séparation d'espèces chimiques), ce qui représente un défi majeur chez les rongeurs à cause de leur très faible volume sanguin (˜1,4 ml pour une souris). Des solutions fournissant une analyse partielle sont présentées dans la littérature, mais aucune ne permet d'effectuer toutes les opérations dans un même système. Les présents travaux de recherche s'insèrent dans le contexte global d'un projet visant à développer un système microfluidique d'analyse sanguine complète en temps réel pour la caractérisation des nouveaux radiotraceurs TEP et TEM. Un cahier des charges a tout d'abord été établi et a permis de fixer des critères quantitatifs et qualitatifs à respecter pour chacune des fonctions de la puce. La fonction de détection microfluidique a ensuite été développée. Un état de l'art des travaux ayant déjà combiné la microfluidique et la détection de radioactivité a permis de souligner qu'aucune solution existante ne répondait aux critères du projet. Parmi les différentes technologies disponibles, des microcanaux en résine KMPR fabriqués sur des détecteurs semiconducteurs de type p-i-n ont été identifiés comme une solution technologique pour le projet. Des détecteurs p-i-n ont ensuite été fabriqués en utilisant un procédé standard. Les performances encourageantes obtenues ont mené à initier un projet de ma

  1. SISCAL project

    NASA Astrophysics Data System (ADS)

    Santer, Richard P.; Fell, Frank

    2003-05-01

    The first "ocean colour" sensor, Coastal Zone Color Scanner (CZCS), was launched in 1978. Oceanographers learnt a lot from CZCS but it remained a purely scientific sensor. In recent years, a new generation of satellite-borne earth observation (EO) instruments has been brought into space. These instruments combine high spectral and spatial resolution with revisiting rates of the order of one per day. More instruments with further increased spatial, spectral and temporal resolution will be available within the next years. In the meantime, evaluation procedures taking advantage of the capabilities of the new instruments were derived, allowing the retrieval of ecologically important parameters with higher accuracy than before. Space agencies are now able to collect and to process satellite data in real time and to disseminate them via the Internet. It is therefore meanwhile possible to envisage using EO operationally. In principle, a significant demand for EO data products on terrestrial or marine ecosystems exists both with public authorities (environmental protection, emergency management, natural resources management, national parks, regional planning, etc) and private companies (tourist industry, insurance companies, water suppliers, etc). However, for a number of reasons, many data products that can be derived from the new instruments and methods have not yet left the scientific community towards public or private end users. It is the intention of the proposed SISCAL (Satellite-based Information System on Coastal Areas and Lakes) project to contribute to the closure of the existing gap between space agencies and research institutions on one side and end users on the other side. To do so, we intend to create a data processor that automatically derives and subsequently delivers over the Internet, in Near-Real-Time (NRT), a number of data products tailored to individual end user needs. The data products will be generated using a Geographical Information System (GIS

  2. Past Project Expo Sites

    EPA Pesticide Factsheets

    This page provides information for Project Expo sites that were featured at the LMOP Conferences in 2013 and 2014. Project Expo sites were featured as being interested in identifying project partners for the development of an LFG energy project.

  3. Project Grandmaster

    SciTech Connect

    2013-09-16

    The purpose of the Project Grandmaster Application is to allow individuals to opt-in and give the application access to data sources about their activities on social media sites. The application will cross-reference these data sources to build up a picture of each individual activities they discuss, either at present or in the past, and place this picture in reference to groups of all participants. The goal is to allow an individual to place themselves in the collective and to understand how their behavior patterns fit with the group and potentially find changes to make, such as activities they weren’t already aware of or different groups of interest they might want to follow.

  4. VIPER project

    NASA Technical Reports Server (NTRS)

    Kershaw, John

    1990-01-01

    The VIPER project has so far produced a formal specification of a 32 bit RISC microprocessor, an implementation of that chip in radiation-hard SOS technology, a partial proof of correctness of the implementation which is still being extended, and a large body of supporting software. The time has now come to consider what has been achieved and what directions should be pursued in the future. The most obvious lesson from the VIPER project was the time and effort needed to use formal methods properly. Most of the problems arose in the interfaces between different formalisms, e.g., between the (informal) English description and the HOL spec, between the block-level spec in HOL and the equivalent in ELLA needed by the low-level CAD tools. These interfaces need to be made rigorous or (better) eliminated. VIPER 1A (the latest chip) is designed to operate in pairs, to give protection against breakdowns in service as well as design faults. We have come to regard redundancy and formal design methods as complementary, the one to guard against normal component failures and the other to provide insurance against the risk of the common-cause failures which bedevil reliability predictions. Any future VIPER chips will certainly need improved performance to keep up with increasingly demanding applications. We have a prototype design (not yet specified formally) which includes 32 and 64 bit multiply, instruction pre-fetch, more efficient interface timing, and a new instruction to allow a quick response to peripheral requests. Work is under way to specify this device in MIRANDA, and then to refine the spec into a block-level design by top-down transformations. When the refinement is complete, a relatively simple proof checker should be able to demonstrate its correctness. This paper is presented in viewgraph form.

  5. Utilisation de la mélatonine pour le sommeil chez les enfants en bonne santé

    PubMed Central

    Janjua, Irvin; Goldman, Ran D.

    2016-01-01

    Résumé Question Une maman a amené son garçon de 12 ans me consulter à mon bureau. Elle s’inquiète, car il a de la difficulté à s’endormir presque tous les soirs. Elle travaille par quarts et elle prend elle-même de la mélatonine pour l’aider à s’endormir. Elle m’a demandé si son garçon pouvait aussi prendre de la mélatonine. Quels sont les recommandations et les éléments à considérer avant d’utiliser la mélatonine chez les enfants et les adolescents en bonne santé? Réponse L’insomnie est rapportée chez jusqu’à un quart des enfants en bonne santé et chez les trois quarts des enfants atteints d’une affection psychiatrique ou neurodéveloppementale, ce qui entraîne des conséquences négatives. Pour les enfants atteints du syndrome de retard de phase du sommeil, la mélatonine pourrait s’avérer utile lorsque jumelée à une évaluation de l’insomnie et à un suivi régulier. La mélatonine pourrait être envisagée pour des enfants sans diagnostic d’insomnie qui ont une bonne hygiène du sommeil. Bien qu’elle semble sans danger, il n’existe pas de données probantes en faveur de l’emploi systématique de la mélatonine chez les enfants en bonne santé.

  6. Guides d'ondes infrarouges pour applications en télécommunications, capteurs chimiques et biochimiques

    NASA Astrophysics Data System (ADS)

    Smektala, F.; Bureau, B.; Adam, J. L.; Lucas, J.

    2002-06-01

    Les énergies de phonons élevés des verres à base de silice limitent leurs applications dans l'infrarouge. Il devient donc incontournable de créer des verres à plus faible énergie de phonons pour développer une optique passive guidée opérationnelle dans l'IR moyen et pour réaliser de nouveaux guide d'ondes optiques activés par des lanthanides pouvant jouer le rôle soit d'amplificateurs optiques soit de fibres lasers. Les compositions de verres stables répondant à ces critères sont exceptionnelles et appartiennent aux familles chimiques des fluorures et des chalcogénures. Les verres de fluorures, convenablement dopés par des terres rares, ont permis la réalisation d'amplificateurs optiques opérant dans la fenêtre télecom de la silice (1.3 μm avec le praséodyme, 1.45 μm avec le thulium et 1.55 μm avec l'erbium. Les verres de chalcogénures permettent la réalisation de fibres opérationnelles jusqu'à 12 μm mais seulement pour des applications courtes distances telles que le transport d'énergie moyenne, la radiométrie à l'ambiante et la spectrométrie IR déportée par fibre optique de molécules chimiques ou de tissus biologiques.

  7. Ace Project as a Project Management Tool

    ERIC Educational Resources Information Center

    Cline, Melinda; Guynes, Carl S.; Simard, Karine

    2010-01-01

    The primary challenge of project management is to achieve the project goals and objectives while adhering to project constraints--usually scope, quality, time and budget. The secondary challenge is to optimize the allocation and integration of resources necessary to meet pre-defined objectives. Project management software provides an active…

  8. Project Success in Agile Development Software Projects

    ERIC Educational Resources Information Center

    Farlik, John T.

    2016-01-01

    Project success has multiple definitions in the scholarly literature. Research has shown that some scholars and practitioners define project success as the completion of a project within schedule and within budget. Others consider a successful project as one in which the customer is satisfied with the product. This quantitative study was conducted…

  9. Project Information Packages Kit.

    ERIC Educational Resources Information Center

    RMC Research Corp., Mountain View, CA.

    Presented are an overview booklet, a project selection guide, and six Project Information Packages (PIPs) for six exemplary projects serving underachieving students in grades k through 9. The overview booklet outlines the PIP projects and includes a chart of major project features. A project selection guide reviews the PIP history, PIP contents,…

  10. Photonic Metamaterials for Defence and Security Applications (Les meta-materiaux photoniques pour les applications de defense et de securite)

    DTIC Science & Technology

    2008-04-01

    exceptionnelles qui ne sont pas facilement observables dans les matériaux naturels . La plupart des recherches sur les méta-matériaux ont été consacrées à...matériaux naturels ) est une des principales raisons qui a poussé les chercheurs à approfondir leurs études sur les méta-matériaux. Avec un index...rapports signal/bruit plus importants, une vitesse plus élevée, une taille réduite, et une gamme plus large pour les systèmes de capteurs optiques

  11. Dynamique de la désintégration pour trois types de processus nucléaires

    NASA Astrophysics Data System (ADS)

    Benfoughal, T.; Mirea, M.

    1995-07-01

    In order to study the dynamic behaviours of three disintegration modes (cold fission, alpha-decay and cluster radioactivities), we use a numerical method based on the Euler-Lagrange's equation of motion to obtain a constrained minimum of the WKB-integral in a tridimensional configuration space. The inertia is determined using the Werner-Wheeler approximation and the energy is computed in agreement with the Yukawa-plus-exponential model extended for binary systems with different charge densities. The degrees of freedom of the system are: elongation, necking-in and mass-asymmetry. Least-action trajectories are found for three decay-modes of ^{238}Pu. Afin d'étudier le comportement dynamique de trois modes de désintégration nucléaire (fission froide, désintégration alpha et radioactivité par émission d'ions lourd), nous utilisons une méthode numérique basée sur les équations d'Euler-Lagrange pour obtenir la trajectoire dynamique optimale dans un espace de configuration à trois dimensions. Les degrés de liberté du système retenus sont l'élongation, la taille du col et l'assymétrie de masse. Pour le calcul de l'intégrale d'action par la méthode WKB, l'inertie du système est déterminée dans l'approximation Werner-Wheeler, et l'énergie de déformation est calculée dans le cadre du modèle de la goutte liquide pour une interaction nucléaire de type Yukawa-plus-exponentielle, étendu aux systèmes binaires avec des densités de charge différentes. Cette méthode est appliquée à l'étude de trois modes de désintégration du Pu-238: désintégration alpha, radioactivité par émission du Si-32 et fission froide avec, pour fragment léger, le Mo-104.

  12. Matériaux pour électrodes à alliage hydrurable

    NASA Astrophysics Data System (ADS)

    Percheron-Guégan, A.; Latroche, M.; Knosp, B.

    2002-04-01

    Face à la demande croissante de sources d'énergie portables, le marché des batteries est en constante évolution. Depuis un siècle les batteries Nickel-Cadmium (Ni-Cd) ont été largement utilisées comme moyen pratique de stockage d'énergie. Cependant, du fait du développement rapide des appareils électroniques portables et du besoin croissant de véhicules plus propres, de nouvelles générations de batteries ont été développées durant les dernières décennies. Parmi celles-ci, les batteries Nickel-Métal-Hydrure (NiMH) ont montré qu'elles pouvaient remplacer celles au Ni-Cd en respectant l'environnement et en présentant des capacités supérieures. Les électrodes négatives des batteries NiMH sont constituées d'hydrures réversibles obtenus à partir d'alliages intermétalliques. Le grand éventail d'alliages intermétalliques ainsi que la faculté de ces matériaux à former des composés pseudo binaires ont conduit à un accroissement des efforts de recherche en vue de développer des matériaux de plus en plus performants. Dans cet article, les principales familles de composés intermétalliques thermodynamiquement stables sont passées en revue. Leur comportement vis à vis de l'absorption d'hydrogène et leurs performances électrochimiques sont présentés. Les solutions pour résoudre les problèmes restants comme la corrosion, la passivation, la décrépitation et la durée de vie réduite sont également discutées.

  13. Efficacy of moxidectin 0.5% pour-on against swine nematodes.

    PubMed

    Stewart, T B; Wiles, S E; Miller, J E; Rulli, R D

    1999-11-01

    Forty pigs with induced infections of Ascaris suum, Trichuris suis, Metastrongylus spp., Oesophagostomum dentatum and O. quadrispinulatum were assigned to five-dose groups of moxidectin 0.5% pour-on with eight pigs per dose group. The doses were: moxidectin, 0 (vehicle control), 0.75, 1.00, 1.25, and 1.50 mg/kg(-1) body weight. Worm egg counts (EPG) were made from fecal samples collected on Day 2 pretreatment and on Day 14 or 15 post-treatment. Animals were ranked according to the descending order of A. suum egg counts made on Day 2 and blocked in groups of five. Pigs in blocked groups were assigned randomly to each of the five dose groups. Treatment doses were calculated on the basis of weights taken on Day 1 and were administered topically from the neck to the base of the tail. Pigs were housed by pairs in individual pens provided with self-feeders and automatic waterers. Necropsies were performed on equal numbers of pigs from each treatment group on days 14 and 15 post-treatment. Adult and larval worms were collected, identified and counted by standard parasitological techniques. All counts were transformed by Y=log10 (count+1) transformation prior to analysis. A two-way analysis of variance was conducted and treatment effect was tested for significance at the 5% level. Efficacies based on geometric means and optimal doses were as follows: Ascaris suum, 98.3% at 1.25; Metastrongylus spp., 100% at 0.75; Oesophagostomum quadrispinulatum, 100% at 1.50; and Trichuris suis, 93.5% at 0.75. Efficacy for O. dentatum was from 81.3% to 100%; however, the average number of O. dentatum (30) was too small for significance. Two species of lungworms were present, Metastrongylus apri and M. pudendotectus but they were not speciated at necropsy. As reported for several anthelmintics, the efficacy of moxidectin was variable for Trichuris. The highest efficacy was in the 0.75 dose group with six pigs harboring a few or no worms. The lowest efficacy was in the 1.25 group with only

  14. Interdiffusion de puits quantiques controlee par irradiation laser excimere pour l'integration de composants photoniques

    NASA Astrophysics Data System (ADS)

    Genest, Jonathan

    L'integration de composants discrets sur un systeme unique, tel une puce electronique, augmente les performances totales du systeme, fait apparaitre de nouvelles fonctionnalites et diminue les couts associes a la fabrication des dispositifs. Ces ameliorations, appliquees au secteur de la microelectronique, sont grandement responsables des avancements importants qu'ont connus les technologies de l'information et des communications au cours des dernieres annees. Puisque la fabrication de circuits photoniques integres necessite l'integration de structures ayant des bandes interdites differentes a partir d'une meme puce semiconductrice, leur niveau d'integration est bien inferieur que celui atteint pour un microprocesseur standard. Parmi les techniques ayant le potentiel de fabriquer des circuits photoniques integres monolithiquement, l'interdiffusion de puits quantique post-expitaxial controlee spatialement augmente la bande interdite d'une heterostructure semiconductrice a l'interieur de regions definies. Le processus d'interdiffusion, active thermiquement, est accelere par la diffusion d'impuretes et de defauts ponctuels tels que les lacunes et les interstitiels. L'hypothese de depart de mes travaux de doctorat suppose que la radiation laser ultra-violette module la diffusion et la generation de defauts ponctuels dans les heterostructures reposant sur les technologies a base de GaAs et d'InP et, consequemment, controle spatialement l'interdiffusion de puits quantiques. Nous avons demontre que lorsque appliquee sur des heterostructures a base de GaAs, l'irradiation laser excimere l'interdiffusion en favorisant la croissance d'un stresseur de surface qui empeche la diffusion des defauts ponctuels vers les puits quantiques. Nous avons souligne l'influence de la vapeur d'eau physisorbee sur la croissance du stresseur et avons determine la resolution spatiale de la technique. Dans les heterostructures basees sur les technologies InP, meme sous le seuil d'ablation, l

  15. Developpement d'un vibrateur acoustique pour precipiter les defauts latents de circuits electroniques

    NASA Astrophysics Data System (ADS)

    Lafleur, Francois

    2003-08-01

    Le procede de deverminage, ou Environmental Stress Screening (ESS), est employe principalement dans le domaine de l'electronique pour reduire les mortalites infantiles des produits avant leur livraison. Il utilise usuellement des stimulations environnementales telles que les vibrations ou la temperature produites a l'aide d'equipements conventionnels d'essais qui sont tres couteux et difficiles a implanter. Le but de cette recherche est le developpement d'une nouvelle methode d'excitation vibratoire des plaques de circuits electroniques a moindre cout par l'emploi de l'excitation acoustique. Le projet a mene au developpement d'un vibrateur acoustique pouvant etre utilise lors d'implantations du procede ESS en milieu industriel. L'utilisation de cette nouvelle technologie et des methodes novatrices de personnalisation des spectres ESS proposees dans cette these permettent la precipitation de defaillances latentes presentes dans les produits electroniques de facon efficace et securitaire et ce, a moindre cout par rapport aux technologies concurrentes. La methodologie des travaux presentes dans cette these inclus: (1) La generation acoustique des vibrations sur les circuits; (2) L'analyse modale acoustique des circuits par des methodes a reference unique et a references multiples; (3) La precipitation de defauts latents typiques des circuits electroniques; (4) Une methode d'individualisation des spectres vibratoires tenant compte des caracteristiques structurelles des circuits; (5) La presentation de la configuration de l'equipement acoustique et les resultats d'implantation du procede. Nonobstant la fabrication, l'installation et la mise en service d'un equipement en milieu industriel (depuis le mois de mai 2002), ces travaux ont permis l'obtention de trois familles de brevets et la publication de six articles de conference: trois portant sur l'analyse modale a reference unique, un portant sur l'analyse modale a references multiples, un autre portant sur la

  16. Système expert pour la conception en électronique de puissance

    NASA Astrophysics Data System (ADS)

    Fezzani, D.; Piquet, H.; Foch, H.

    1996-03-01

    The study that we propose concerns the automatic design of static converters and especially of Uninterrupted Power Supply (UPS). The aim is the development of a tool bringing an assistance in the analysis of the specifications, the choice and design of the structure that best match the application. To realize the design of these UPS, a new approach is presented. Specifications are described in terms of input and output performances (voltage, current, ...). These data are analyzed by using design rules and methods which allows designing the input filter, the output filter, the inverter, the rectifier, etc. In practice, these rules and methods are implemented on a micro computer by use of an “expert system generator” SMECI. We present and justify the modular structure that has been installed, as well as its functioning. L'étude que nous proposons concerne la conception automatique des convertisseurs statiques et en particulier des Alimentations Sans Interruption (ASI). Le but recherché est la mise au point d'un outil apportant une aide à l'analyse du cahier des charges, au choix et au dimensionnement des structures les mieux adaptées. Pour réaliser la conception de ces ASI, une nouvelle approche est présentée. Les spécifications sont décrites par les performances recherchées au niveau des courants et des tensions à l'entrée et à la sortie. Ces données sont analysées par l'emploi de méthodes et de règles de conception permettant ainsi de dimensionner le filtre d'entrée, le filtre de sortie, l'onduleur, le redresseur, etc. Au plan pratique, ces règles et méthodes sont implantées à l'aide du “générateur de système expert” SMECI. Nous présentons et justifions la structure modulaire qui a été mise en place, ainsi que son fonctionnement.

  17. Project LASER

    NASA Technical Reports Server (NTRS)

    1990-01-01

    NASA formally launched Project LASER (Learning About Science, Engineering and Research) in March 1990, a program designed to help teachers improve science and mathematics education and to provide 'hands on' experiences. It featured the first LASER Mobile Teacher Resource Center (MTRC), is designed to reach educators all over the nation. NASA hopes to operate several MTRCs with funds provided by private industry. The mobile unit is a 22-ton tractor-trailer stocked with NASA educational publications and outfitted with six work stations. Each work station, which can accommodate two teachers at a time, has a computer providing access to NASA Spacelink. Each also has video recorders and photocopy/photographic equipment for the teacher's use. MTRC is only one of the five major elements within LASER. The others are: a Space Technology Course, to promote integration of space science studies with traditional courses; the Volunteer Databank, in which NASA employees are encouraged to volunteer as tutors, instructors, etc; Mobile Discovery Laboratories that will carry simple laboratory equipment and computers to provide hands-on activities for students and demonstrations of classroom activities for teachers; and the Public Library Science Program which will present library based science and math programs.

  18. Utilisation des matériaux luminescents pour la métrologie des faisceaux intenses UVX d'impulsions ultracourtes

    NASA Astrophysics Data System (ADS)

    Fedorov, N.; Nagirnyi, V.; Vasil'Ev, A.; Belsky, A.; Carré, B.; Feldbach, E.; Gaudin, J.; Geoffroy, G.; Guizard, S.; de Grazia, M.; Kirm, M.; Martin, P.; Merdji, H.

    2006-12-01

    Récemment nous avons débuté des séries d'expériences sur l'interaction d'impulsions intenses VUV avec les solides luminescents. Le but principal en est l'étude des mécanismes d'interaction et de transfert d'énergie entre les excitations électroniques dans les solides à large bande interdite. L'application directe de ces études sera le développement de matériaux et de méthodes de métrologie pour les faisceaux UVX intenses. Nous présentons les résultats obtenus pour CdWO{4} qui montrent que ce cristal pourra servir comme un scintillateur pour le rayonnement VUV intense.

  19. Prescrire du cannabis fumé pour la douleur chronique non cancéreuse

    PubMed Central

    Kahan, Meldon; Srivastava, Anita; Spithoff, Sheryl; Bromley, Lisa

    2014-01-01

    Résumé Objectif Offrir des conseils préliminaires sur la prescription de cannabis fumé pour la douleur chronique avant la publication de lignes directrices officielles. Qualité des données Nous avons examiné les ouvrages scientifiques sur l’efficacité analgésique du cannabis fumé et les dommages causés par la consommation de cannabis à des fins médicales et récréatives. Nous avons élaboré des recommandations concernant les indications et les contre-indications du cannabis fumé, les précautions à prendre et son dosage et nous avons classé les recommandations en fonction du niveau des données probantes. La plupart des données probantes sont de niveau II (études observationnelles bien effectuées) et de niveau III (opinion d’experts). Message principal Le cannabis fumé pourrait être indiqué chez des patients souffrant de douleurs neuropathiques sévères qui n’ont pas répondu à des essais suffisants de cannabinoïdes pharmaceutiques et d’analgésiques standards (données probantes de niveau II). Le cannabis fumé est contre-indiqué chez les patients de 25 ans ou moins (données probantes de niveau II); ceux qui font actuellement ou ont fait par le passé une psychose ou encore ont de forts antécédents familiaux de psychose (données probantes de niveau II); ceux qui ont ou ont eu un problème de consommation de cannabis (données probantes de niveau III); ceux qui ont un problème actuel de toxicomanie ou d’alcoolisme (données probantes de niveau III); ceux qui ont une maladie cardiovasculaire ou respiratoire (données probantes de niveau III); ou celles qui sont enceintes ou planifient une grossesse (données probantes de niveau II). Il devrait être utilisé avec précaution par les patients qui fument du tabac (données probantes de niveau II), qui sont à risque accru de maladies cardiovasculaires (données probantes de niveau III), qui ont des troubles d’anxiété ou de l’humeur (données probantes de niveau II) ou

  20. Développement d'outils de mesure pour l'amélioration du procédé d'impression offset

    NASA Astrophysics Data System (ADS)

    Boumaïza, K.; Baudin, G.; Catusse, R.; Viallet, A.

    1999-03-01

    The offset printing process rests primarily on the balance between ink and damping solution. However, this balance remains difficult to realize. The corresponding wastes of time and into consumable (ink, paper and damping solution) are harmful for the industrialist, the consumer and the environment. The main feature of this work is to control and thus to optimize these flux. With this intention, two optical sensors functioning in reflection were developed. A laser with receiving photodiode for the control of damping solution film thickness, and an optical fiber related to a photoelectric sensor for control of ink film thickness. The current study aims at the calibration of these two sensors for respectively the control of water and ink flux in the offset press. Le procédé d'impression offset repose essentiellement sur l'équilibre entre la solution de mouillage et l'encre. Toutefois, cet équilibre reste une tâche difficile à réaliser. Les pertes en temps et en consommables (encre, papier, solution de mouillage) correspondantes sont nuisibles à la fois pour l'industriel, le consommateur et l'environnement. L'objectif de ce travail est de contrôler et donc d'optimiser ces flux pour un tirage donné. Pour ce faire, deux capteurs de type optique fonctionnant en réflexion ont été développés. Un laser avec photodiode réceptrice pour le contrôle du film de solution de mouillage, et une fibre optique liée à un capteur photoélectrique pour le contrôle du film d'encre. L'étude actuelle vise la mise en ouvre et l'étalonnage de ces deux capteurs pour la mesure et le contrôle des films respectifs d'eau et d'encre dans la presse offset.

  1. A New Direct-Pour In-Mold (DPI) Technology for Producing Ductile and Compacted Graphite Iron Castings.

    SciTech Connect

    Jason Hitchings; Jay R. Hitchings

    2007-07-20

    A new "Direct Pour In-Mold" (DPI) Magnesium treatment technology has been developed that can produce both Nodular and Compacted Graphite iron. The DPI technology converts the standard horizontal runner system into a vertical one, by placing a Magnesium Ferrosilicon treatment alloy and molten metal filter into a specially designed container. The DPI container is easily placed into either vertically or horizontally parted molds, and then a base metal can be poured directly into it. The metal is treated and filtered as it passes through, and then proceeds directly into a runner or casting cavity. Various sizes of containers provide all of the necessary components required to deliver a range of weights of treated and filtered metal at accurate and consistent flow rates. The DPI containers provide energy savings over competing techniques, increased mold yields, very high Magnesium recovery, zero Magnesium fume, and no post inoculation is required. By treating the metal just prior to it entering a casting cavity many other benefits and advantages are also realized.

  2. A Novel Methodology for the Synthesis of Acyloxy Castor Polyol Esters: Low Pour Point Lubricant Base Stocks.

    PubMed

    Kamalakar, Kotte; Mahesh, Goli; Prasad, Rachapudi B N; Karuna, Mallampalli S L

    2015-01-01

    Castor oil, a non-edible oil containing hydroxyl fatty acid, ricinoleic acid (89.3 %) was chemically modified employing a two step procedure. The first step involved acylation (C(2)-C(6) alkanoic anhydrides) of -OH functionality employing a green catalyst, Kieselguhr-G and solvent free medium. The catalyst after reaction was filtered and reused several times without loss in activity. The second step is esterification of acylated castor fatty acids with branched mono alcohol, 2-ethylhexanol and polyols namely neopentyl glycol (NPG), trimethylolpropane (TMP) and pentaerythritol (PE) to obtain 16 novel base stocks. The base stocks when evaluated for different lubricant properties have shown very low pour points (-30 to -45°C) and broad viscosity ranges 20.27 cSt to 370.73 cSt, higher viscosity indices (144-171), good thermal and oxidative stabilities, and high weld load capacities suitable for multi-range industrial applications such as hydraulic fluids, metal working fluids, gear oil, forging and aviation applications. The study revealed that acylated branched mono- and polyol esters rich in monounsaturation is desirable for developing low pour point base stocks.

  3. Orientation photoinduite de nouvelles molécules pour l'optique non linéaire

    NASA Astrophysics Data System (ADS)

    Ngan, N. T. K.; Dumont, M.

    2002-06-01

    Dans les films de polymères utilisés pour les composants de télécommunication, l'orientation photoinduite de molécules de colorants permet de réaliser une biréfringence ou une non centrosymétrie (X^{(2)}). Le mécanisme d'orientation comporte un pompage optique sélectif (“hole buming angulaire”), suivi, soit d'une photodégradation, soit d'un retour à l'état initial, accompagné d'une rotation (“redistribution angulaire”). Seul ce second cas conduit à une orientation importante, par accumulation des molécules dans la direction la moins pompée. C'est le cas des molécules photoisomérisables de façon réversible, tels les azobenzènes. Nous présentons ici une nouvelle molécule azoïque octupolaire qui est un excellent candidat pour l'orientation tout-optique.

  4. The effect of pouring time on the dimensional accuracy of casts made from different irreversible hydrocolloid impression materials

    PubMed Central

    Wadhwa, Supneet Singh; Mehta, Richa; Duggal, Nidhi; Vasudeva, Kamlesh

    2013-01-01

    Aims and Objectives: To determine the time dependent accuracy of casts made from three different irreversible hydrocolloids. Materials and Methods: The effect of delayed pouring on the accuracy of three different irreversible hydrocolloid impression materials – Regular set CA 37(Cavex, The Netherlands), regular set chromatic (Jeltrate, Dentsply), and fast set (Hydrogum soft, Zhermack Clinical) was investigated. A brass master die that contained two identical posts simulating two complete crown-tapered abutment preparations with reference grooves served as a standardized master model. A total of 120 impressions were made using specially prepared stock-perforated brass tray with 40 impressions of each material. The impressions were further sub-grouped according to four different storage time intervals: 0 min (immediately), 12 min, 30 min, and 1 h. The impressions were stored at room temperature in a zip-lock plastic bag. Interabutment and intraabutment distances were measured in the recovered stone dies (Type IV, Kalrock) using a profile projector with an accuracy of 0.001 mm. The data so obtained was analyzed statistically. Results: Results of this study showed no statistically significant differences in the accuracy of casts obtained at different time intervals. Conclusion: Because it is not always possible to pour the impression immediately in routine clinical practice, all irreversible hydrocolloid materials studied could be stored in a zip-lock plastic bag for upto 1 h without any significant distortion. PMID:24124296

  5. Analyse de la motivation pour les mathematiques d'eleves du secondaire participant a une activite de programmation informatique

    NASA Astrophysics Data System (ADS)

    Ouellette, Jean-Michel

    Au Quebec, le decrochage scolaire cause par un manque de motivation de la part des eleves est une preoccupation actuelle. Dans une societe de savoirs ou les technologies prennent une place de plus en plus grande, il apparait important d'explorer toutes les pistes de travail quant a l'amelioration de la motivation scolaire des jeunes. Plus precisement, sachant qu'il existe des liens concrets entre la programmation informatique et les mathematiques, nous avons analyse l'apport possible de l'apprentissage de la programmation informatique a la motivation pour l'apprentissage des mathematiques. Trois eleves de troisieme secondaire ont participe a cette etude multicas. Selon les resultats d'analyse, tous les eleves ont vecu une amelioration de leur motivation a apprendre les mathematiques. A la lumiere de l'analyse de ces resultats, nous proposons une explication relativement aux liens possibles entre la participation des eleves a une activite parascolaire de programmation informatique et l'amelioration de leur motivation pour l'apprentissage des mathematiques.

  6. Consensus formalisé: recommandations de pratiques cliniques pour la prise en charge de la migraine du patient adulte africain

    PubMed Central

    Ahmed, Mahmoud Ait Kaci; Haddad, Monia; Kouassi, Beugré; Ouhabi, Hamid; Serrie, Alain

    2016-01-01

    La migraine est une céphalée primaire (selon les derniers critères de l'International Headache Society) qui affecte environ 8% de la population africaine. Les femmes sont plus fréquemment touchées que les hommes et les crises apparaissent le plus souvent avant l’âge de 40 ans. Bien qu'un certain nombre de traitements, de mesure hygiéno-diététiques, et d'autres méthodes non pharmacologiques permettent de limiter l'intensité et la fréquence des crises, la prise en charge médicamenteuse de la crise de migraine est très souvent nécessaire. La disponibilité des traitements et l'accès aux soins diffèrent sur le continent africain et ont conduit à la réalisation du 1er consensus d'experts pour la prise en charge du patient adulte africain. Destiné aux praticiens, ce travail collaboratif multinational a pour objectif de fournir 16 recommandations de pratiques cliniques simples, fondées sur les preuves, et adaptées aux conditions de l'exercice médical en Afrique. PMID:27642420

  7. RESOLVE Project

    NASA Technical Reports Server (NTRS)

    Parker, Ray; Coan, Mary; Cryderman, Kate; Captain, Janine

    2013-01-01

    The RESOLVE project is a lunar prospecting mission whose primary goal is to characterize water and other volatiles in lunar regolith. The Lunar Advanced Volatiles Analysis (LAVA) subsystem is comprised of a fluid subsystem that transports flow to the gas chromatograph - mass spectrometer (GC-MS) instruments that characterize volatiles and the Water Droplet Demonstration (WDD) that will capture and display water condensation in the gas stream. The LAVA Engineering Test Unit (ETU) is undergoing risk reduction testing this summer and fall within a vacuum chamber to understand and characterize component and integrated system performance. Testing of line heaters, printed circuit heaters, pressure transducers, temperature sensors, regulators, and valves in atmospheric and vacuum environments was done. Test procedures were developed to guide experimental tests and test reports to analyze and draw conclusions from the data. In addition, knowledge and experience was gained with preparing a vacuum chamber with fluid and electrical connections. Further testing will include integrated testing of the fluid subsystem with the gas supply system, near-infrared spectrometer, WDD, Sample Delivery System, and GC-MS in the vacuum chamber. This testing will provide hands-on exposure to a flight forward spaceflight subsystem, the processes associated with testing equipment in a vacuum chamber, and experience working in a laboratory setting. Examples of specific analysis conducted include: pneumatic analysis to calculate the WDD's efficiency at extracting water vapor from the gas stream to form condensation; thermal analysis of the conduction and radiation along a line connecting two thermal masses; and proportional-integral-derivative (PID) heater control analysis. Since LAVA is a scientific subsystem, the near-infrared spectrometer and GC-MS instruments will be tested during the ETU testing phase.

  8. Advances in Components for Active and Passive Airborne Sensors (Progres des Composants pour les Systemes des Detection Active et Passive Aeroportes)

    DTIC Science & Technology

    1990-09-01

    WJ.Ilocchi, Jr SESSION V - OPTIC APPLICATIONS TO AVIONICS Fibres Optiques Sp~ciales et Capteurs pour I’A~onautique 16 (Special Optical Fibers and...D.R.Bates Ai RAPPORT D’EVALUATION TECHNIQUE Lcs Progr~s des Composants pour Capteurs Actifs et Passifs Aroport&s Confidrence de sp~cialistes de ’AGARD, Bath...particuli~rement au niveau en mati~re de r~alisation de composants et de des capteurs , qui constituent souvent le maillon circuits. critique du syst

  9. C3I for Crisis, Emergency and Consequence Management (C3I pour la gestion des crises, des urgences et de leurs consequences)

    DTIC Science & Technology

    2009-05-01

    May 2009 C3I for Crisis, Emergency and Consequence Management (C3I pour la gestion des crises , des urgences et de leurs conséquences) Research and...consequence management. ES - 2 RTO-MP-IST-086 C3I pour la gestion des crises , des urgences et de leurs conséquences (RTO-MP-IST-086...contre-terrorisme, de sécurité nationale/publique et de réponse collective face aux situations d’urgence (à la fois gestion des crises et gestion de leurs

  10. AMMPHS Trial Report CFB Valcartier, 28 September to 9 October 2009 (Compte Rendu D’Essais pour le AMMPHS BFC Valcartier du 28 Septembre au 9 Octobre 2009)

    DTIC Science & Technology

    2010-03-01

    le soldat (CIS) qui ont eu lieu à la base des Forces canadiennes (BFC) Valcartier du 28 septembre au 9 octobre 2009. Une batterie d’essais de...casques intégrés pour le soldat (CIS), les prototypes de systèmes de mandibule du SCPMMP ont été évalués à partir d’une quantité de kiosques statiques et...champ de vision, un sous-ensemble de douze (12) soldats a été sélectionné pour participer aux essais des CIS et des SCPMMP (les autres participants

  11. Strategies to Address Recruiting and Retention Issues in the Military (Strategies pour aborder les questions de recrutement et de fidelisation dans les armees)

    DTIC Science & Technology

    2009-10-01

    Oct 2009 Strategies to Address Recruiting and Retention Issues in the Military (Stratégies pour aborder les questions de recrutement et de...les questions de recrutement et de fidélisation dans les armées) The material in this publication was assembled to support a Special Course under...HFM-180 Stratégies pour aborder les questions de recrutement et de fidélisation dans les armées (RTO-EN-HFM-180) Synthèse L’objectif des

  12. Cinétique de la troponine Ic et valeurs seuils pour le diagnostic d'infarctus du myocarde après chirurgie cardiaque sous circulation extracorporelle

    PubMed Central

    Kallel, Samy; Jarraya, Anwar; Ellouze, Maged; Frikha, Imed; Karoui, Abbdelhamid

    2012-01-01

    Introduction L'objectif de ce travail était d’étudier la cinétique de la Troponine Ic (TnIc) après chirurgie cardiaque sous circulation extracorporelle (CEC) et établir des valeurs seuils de TnIc pour le diagnostic d'infarctus du myocarde (IDM) post opératoire. Il s'agissait d'une étude prospective type cohorte observationnelle. Méthodes Nous avons inclus 37 patients âgés de plus de 18 ans proposés pour chirurgie valvulaire ou pontage aorto coronarien sous CEC. Nous avons suivi la cinétique de TnIc par des dosages immunoenzymatique sur mini-vidas® avant et après la CEC, à H4 et H12 postopératoire puis tous les jours les 4 premiers jours. Le cutoff pour le diagnostic d'IDM post opératoire a été défini comme la valeur moyenne de troponine + deux déviations standards des patients indemnes de complications cardiaques. Résultats Les valeurs de TnIc en préopératoire étaient toutes inférieures au seuil de détection de la méthode de dosage (<0,01µg/l). Les valeurs de TnIc augmentent en postopératoire immédiat pour atteindre un maximum à H4 puis diminuent progressivement pour se normaliser après 4 à 5 jours. Les valeurs seuils ont été déterminées pour H0, H4,H12, H24, H48, H72, H96 et ont été respectivement 1.36, 2.58, 3.1, 3.23, 2.13, 1.53, 1.17 pour la chirurgie coronaire et 3.75, 5.39, 4.22, 3.41, 1.65, 1.3 1.19 pour la chirurgie valvulaire. Conclusion La connaissance de la cinétique de TnIc lors de chirurgie cardiaque non compliquée et la fixation de valeur seuil ou Cutoff permet aux cliniciens de distinguer entre dommage myocardique secondaire à la chirurgie et IDM. PMID:23396754

  13. Partners in Quality: Issues, 1 = Partenaires pour la qualite: Enjeux, 1.

    ERIC Educational Resources Information Center

    Kaiser, Barbara; Rasminsky, Judy Sklar

    Partners in Quality is a research and development project sponsored by the Canadian Child Care Federation and its affiliates to explore how child care providers, parents, and other partners can work together to support and improve quality in child care. Based on the view that the quality of the caregiver-child relationship is a key component of…

  14. Partners in Quality: Tools for Administrators in Child Care Settings. Standards for Quality Child Care Programs, Standards of Practice for Administrators/Directors = Partenaires pour la qualite: Outils pour les gestionnaires des divers milieux de garde d'enfants. Normes pour les services de garde de qualite, Normes professionnelles pour les gestionnaires.

    ERIC Educational Resources Information Center

    Doherty, Gillian

    Partners in Quality is a research and development project sponsored by the Canadian Child Care Federation and its affiliates to explore how child care providers, parents, and other partners can work together to support and improve quality in child care. This booklet, in both English and French, supplements a series to support child care providers…

  15. Partners in Quality: Relationships, 2 = Partenaires pour la qualite: Relations, 2.

    ERIC Educational Resources Information Center

    Kaiser, Barbara; Rasminsky, Judy Sklar

    Partners in Quality is a research and development project sponsored by the Canadian Child Care Federation and its affiliates to explore how child care providers, parents, and other partners can work together to support and improve quality in child care. This booklet, in both English and French, is the second in a series to support child care…

  16. RESOLVE Project

    NASA Technical Reports Server (NTRS)

    Parker, Ray O.

    2012-01-01

    The RESOLVE project is a lunar prospecting mission whose primary goal is to characterize water and other volatiles in lunar regolith. The Lunar Advanced Volatiles Analysis (LAVA) subsystem is comprised of a fluid subsystem that transports flow to the gas chromatograph- mass spectrometer (GC-MS) instruments that characterize volatiles and the Water Droplet Demonstration (WDD) that will capture and display water condensation in the gas stream. The LAVA Engineering Test Unit (ETU) is undergoing risk reduction testing this summer and fall within a vacuum chamber to understand and characterize C!Jmponent and integrated system performance. Ray will be assisting with component testing of line heaters, printed circuit heaters, pressure transducers, temperature sensors, regulators, and valves in atmospheric and vacuum environments. He will be developing procedures to guide these tests and test reports to analyze and draw conclusions from the data. In addition, he will gain experience with preparing a vacuum chamber with fluid and electrical connections. Further testing will include integrated testing of the fluid subsystem with the gas supply system, near-infrared spectrometer, WDD, Sample Delivery System, and GC-MS in the vacuum chamber. This testing will provide hands-on exposure to a flight forward spaceflight subsystem, the processes associated with testing equipment in a vacuum chamber, and experience working in a laboratory setting. Examples of specific analysis Ray will conduct include: pneumatic analysis to calculate the WOO's efficiency at extracting water vapor from the gas stream to form condensation; thermal analysis of the conduction and radiation along a line connecting two thermal masses; and proportional-integral-derivative (PID) heater control analysis. In this Research and Technology environment, Ray will be asked to problem solve real-time as issues arise. Since LAVA is a scientific subsystem, Ray will be utilizing his chemical engineering background to

  17. Project summary

    NASA Technical Reports Server (NTRS)

    1991-01-01

    California Polytechnic State University's design project for the 1990-91 school year was the design of a close air support aircraft. There were eight design groups that participated and were given requests for proposals. These proposals contained mission specifications, particular performance and payload requirements, as well as the main design drivers. The mission specifications called for a single pilot weighing 225 lb with equipment. The design mission profile consisted of the following: (1) warm-up, taxi, take off, and accelerate to cruise speed; (2) dash at sea level at 500 knots to a point 250 nmi from take off; (3) combat phase, requiring two combat passes at 450 knots that each consist of a 360 deg turn and an energy increase of 4000 ft. - at each pass, half of air-to-surface ordnance is released; (4) dash at sea level at 500 knots 250 nmi back to base; and (5) land with 20 min of reserve fuel. The request for proposal also specified the following performance requirements with 50 percent internal fuel and standard stores: (1) the aircraft must be able to accelerate from Mach 0.3 to 0.5 at sea level in less than 20 sec; (2) required turn rates are 4.5 sustained g at 450 knots at sea level; (3) the aircraft must have a reattack time of 25 sec or less (reattack time was defined as the time between the first and second weapon drops); (4) the aircraft is allowed a maximum take off and landing ground roll of 2000 ft. The payload requirements were 20 Mk 82 general-purpose free-fall bombs and racks; 1 GAU-8A 30-mm cannon with 1350 rounds; and 2 AIM-9L Sidewinder missiles and racks. The main design drivers expressed in the request for proposal were that the aircraft should be survivable and maintainable. It must be able to operate in remote areas with little or no maintenance. Simplicity was considered the most important factor in achieving the former goal. In addition, the aircraft must be low cost both in acquisition and operation. The summaries of the aircraft

  18. Managing Projects for Change: Contextualised Project Management

    ERIC Educational Resources Information Center

    Tynan, Belinda; Adlington, Rachael; Stewart, Cherry; Vale, Deborah; Sims, Rod; Shanahan, Peter

    2010-01-01

    This paper will detail three projects which focussed on enhancing online learning at a large Australian distance education University within a School of Business, School of Health and School of Education. Each project had special funding and took quite distinctive project management approaches, which reflect the desire to embed innovation and…

  19. Project Panama: An International Service Project

    ERIC Educational Resources Information Center

    Aydlett, Lydia; Randolph, Mickey; Wells, Gayle

    2010-01-01

    Participation in service learning projects is a growing phenomenon at universities and colleges. Research indicates service projects are beneficial for college students and adults. There is little data investigating developmental differences in how younger versus older participants perceive the service learning process. In this project, older…

  20. Intrinsically disordered proteins and prostate cancer: pouring new wine in an old bottle

    PubMed Central

    Kulkarni, Prakash

    2016-01-01

    An inconvenient truth in urology is that despite decades of intense research, prostate cancer (PCa) has remained one of the most prevalent cancers and leading cause of cancer-related deaths in men, particularly in the industrialized world.1 It is rather sobering to acknowledge that even with early diagnosis and treatment, the incidence and death due to the disease are almost paradoxically projected to increase in the coming decades.2 PMID:27427556

  1. Conception et caracterisation d'un magnetoplasma produit par une onde de surface pour la pulverisation d'echantillons solides

    NASA Astrophysics Data System (ADS)

    Masse, Louis Philippe

    Suite a l'extraordinaire explosion de l'informatique de la derniere decennie, la science et la technologie des materiaux ont pris un essor extraordinaire. Par exemple, il est devenu crucial de concevoir des materiaux a haut degre de purete. Ce besoin a fortement motive le developpement de methodes d'analyse de solides. Traditionnellement, la methode adoptee est l'analyse par torche ICP, mais pour de nombreuses raisons, dont la lenteur de cette methode, la communaute scientifique oeuvrant en chimie analytique recherche des techniques d'analyse de solides directes, rapides et plus sensibles. Parmi les voies possibles, on trouve les methodes basees sur la pulverisation par plasma. Dans ce contexte, nous avons etudie la possibilite et la pertinence d'utiliser un magnetoplasma entretenu par une onde de surface pour pulveriser des solides dans le but de les analyser. Nos travaux portent principalement sur l'etude du comportement du plasma lors de la pulverisation. Nous avons montre que la pulverisation affecte la decharge de diverses facons. En premier lieu, la concentration d'especes provenant du materiau pulverise dans le plasma augmente avec la tension de polarisation. De plus, la concentration d'especes pulverisees diminue lorsque la pression croit, possiblement a cause du redepot. Nous avons aussi montre qu'il etait possible de pulveriser des solides isolants en exploitant le phenomene d'autopolarisation du a l'application d'une tension RF. Nous avons aussi etudie l'effet de la pulverisation sur la temperature et la densite electronique. Ainsi, lors de la pulverisation de metaux tels que le cuivre, la temperature electronique diminue lorsque la tension de polarisation augmente. Ceci est attribuable a l'augmentation de la densite d'especes metalliques neutres facilement ionisables par impact electronique. Nous avons aussi note que la densite electronique augmente avec la concentration d'especes metalliques dans le plasma, ce qui resulte d'un meilleur bilan de

  2. Developpement de methodes analytiques pour un outil de dimensionnement de cadre de fuselage en materiaux composites

    NASA Astrophysics Data System (ADS)

    Sauve, Jeremie

    The goal of this research project is to prepare a series of analytical formulations to be used by a sizing tool for composite airplane fuselage frames. This tool verifies a series of failure modes related to a frame and calculates their respective margins of safety. The tool follows an iterative process until the optimal frame is reached according to user defined parameters. The failure modes taken into account by the sizing tool are the composite material failure, local buckling, crippling, lateral buckling and global buckling. Each phenomenon is associated with its own mathematical formulations, assumptions and limitations. Existing formulations for the margin of safety calculations of each failure phenomenon was found from a literature review. Also, new formulations were developed within the current project for local and lateral buckling. In particular, an analytical formulation and an approximation method based on results obtained from finite element have been developed. Those two methods, combined, allow the estimation of the lateral buckling load of a fuselage composite frame. Finally, the current project required to create some secondary tools used during the development of the methodology for lateral buckling. Those tools are also presented in this thesis.

  3. Elementary School Projects.

    ERIC Educational Resources Information Center

    Learning By Design, 2001

    2001-01-01

    Highlights elementary school construction projects that have won the Learning By Design Awards for 2001. Projects covered involve new school construction; and renovation, additions, and restoration. (GR)

  4. Changements climatiques et variations du champ magnetique terrestre dans le sud de la Patagonie (Argentine) depuis 51 200 ans reconstitues a partir des proprietes magnetiques des sediments du lac Laguna Potrok Aike

    NASA Astrophysics Data System (ADS)

    Lise-Pronovost, Agathe

    Rock magnetism is influenced by climate and by the Earth's magnetic field. The goal of this thesis is to use the rock magnetic properties of the long sedimentary sequence from the lake Laguna Potrok Aike (106 m, 51200 cal BP) to derive paleomagnetic and paleoclimatic records in a key area of the Southern Hemisphere that is poorly documented. Laguna Potrok Aike (52°S, 70°W) is located in southeastern Patagonia (Argentina) in the path of the strong Southern Hemisphere westerly winds and in the source area of the dust deposited in Antarctica during Glacial periods. The lake geographical location is therefore ideal to reconstruct past changes in aeolian activity and climate changes in Patagonia. It is also a key location to reconstruct past changes of the geomagnetic field because the Southern Hemisphere is significantly under-documented relative to the Northern Hemisphere. In addition, the proximity of the South Atlantic Anomaly (SAA) as well as the Southern Hemisphere high flux lobes could allow identifying differences in the paleomagnetic field evolution in southern South America relative to the much more documented Northern Hemisphere. For his strong potential to provide high-resolution climatic, aeolian and paleomagnetic records beyond the last climatic transition, the maar lake Laguna Potrok Aike was drilled in the framework of the International scientific Continental Drilling Program (ICDP) for the Potrok Aike maar lake Sediment Archive Drilling prOject (PASADO). In this thesis, high-resolution rock-magnetic and physical properties are used in order to reconstruct paleoclimate and paleomagnetic records from the southernmost part of South America. In the first chapter, the full-vector paleomagnetic record (inclination, declination and relative paleointensity) derived from the sediments of Laguna Potrok Aike. A grain size influence on the relative paleointensity record (NRM/ARM) was corrected using the median destructive field of the natural remanent

  5. U Modele pour L'enregistrement et L'interpretation Physique D'images Tridimensionnelles EN Couleur

    NASA Astrophysics Data System (ADS)

    Baribeau, Rejean

    Le modele propose dans cette these repose sur l'utilisation d'un capteur de vision tridimensionnelle, couple a un laser RGB, pour la saisie des coordonnees surfaciques d'un objet de meme que des couleurs associees. Une calibration du capteur et l'exploitation des donnees 3D permettent la recuperation des facteurs de reflectance spectrale des elements de surface. On montre que la performance du systeme est limitee par le speckle, et une analyse quantitative du phenomene est proposee. Divers modeles de reflexion sont ensuite etablis puis appliques a l'extraction des parametres physiques intrinseques d'objets dans des scenes 3D en couleur. Une telle modelisation physique facilite la tache d'interpretation et permet plus de souplesse dans la manipulation des objets sous forme de realites virtuelles.

  6. Vulnérologie: un néologisme pour magnifier le concept «plaies et cicatrisation»

    PubMed Central

    Costagliola, M.; Atiyeh, B.

    2016-01-01

    Summary Bien que la cicatrisation des plaies soit un thème médico-chirurgical essentiel depuis l’Antiquité, il a été longtemps négligé. L’essor dans ce domaine, ces 20 dernières années, de la recherche fondamentale et le développement de nouvelles techniques ont fait que la cicatrisation est devenue une entité à part entière, transversale, intéressant plusieurs spécialités. Il a semblé souhaitable, en nous appuyant sur des arguments étymologiques, sémantiques et botaniques, de proposer un néologisme pour regrouper sous une même appellation tous les professionnels de santé oeuvrant dans ce secteur de soins et magnifier ainsi le concept « Plaies et Cicatrisation ». PMID:28149240

  7. Sciences pour les Exoplanètes et les Systèmes Planétaires

    NASA Astrophysics Data System (ADS)

    Roques, F.; Balança, C.; Bénilan, Y.; Griessmeier, J. M.; Marcq, E.; Navarro, T.; Renner, S.; Schneider, J.; Schott, C.

    2016-12-01

    The websites Sciences pour les Exoplanètes et les Systèmes Planétaires (SESP) and Exoplanètes present planetary and exoplanetary sciences with courses, interactive tools, and a didactic catalogue connected to the Encyclopedia exoplanet.eu. These websites have been created in the context of the LabEx ESEP (Exploration Spatiale des Environnements Planétaires) and they are directed towards undergraduate level. They can be used as support for face-to-face courses and self-training. The websites will be translated and will be used to create e-learning degree courses. SESP: http://sesp.esep.pro/fr/index.html EXOPLANETES: http://exoplanetes.esep.pro/

  8. Appendicite aigue non compliquée: y a-t- il une place pour le traitement conservateur

    PubMed Central

    El Khader, Ahmed; Lahkim, Mohamed; El Barni, Rachid; Achour, Abdessamad

    2015-01-01

    Le but de cette étude a été d’évaluer l'efficacité de l'antibiothérapie seule dans le traitement des appendicites aigues non compliquées. C'est une étude prospective, intéressant 68 patients ayant eu une appendicite aigue simple, de confirmation radiologique, traités par l'amoxicilline associée à l'acide clavulanique pendant 10 jours. L'appendicectomie a été réalisée en cas d'aggravation ou en cas de non amélioration au bout de 48heures de traitement. Le traitement conservateur a été efficace dans 82,35% avec une résolution complète des symptômes chez 56 patients. Les 12 cas restants (17,65%) ont subit une appendicectomie. l'appendicite a été gangréneuse dans 8 cas et phlegmoneuse dans 4 cas. Cinq des 56 patients, qui ont bien évolué sous traitement conservateur, ont été réadmis et opérés pour récidive, soit 8,9%. Deux cas ont eu une appendicite compliquée. L'appendicectomie reste le traitement de référence pour l'appendicite aigue, mais le traitement antibiotique peut être proposé en première intension à des patients présentant une appendicite aigue non compliquée. PMID:26327981

  9. Developpement et validation d'un outil base sur l'acoustique geometrique pour le diagnostic du bruit de nacelle

    NASA Astrophysics Data System (ADS)

    Minard, Benoit

    De nos jours, la problématique du bruit généré par les avions est devenue un point de développement important dans le domaine de l'aéronautique. C'est ainsi que de nombreuses études sont faites dans le domaine et une première approche consiste à modéliser de façon numérique ce bruit de manière à réduire de façon conséquente les coûts lors de la conception. C'est dans ce contexte qu'un motoriste a demandé à l'université de Sherbrooke, et plus particulièrement au groupe d'acoustique de l'Université de Sherbrooke (GAUS), de développer un outil de calcul de la propagation des ondes acoustiques dans les nacelles mais aussi pour l'étude des effets d'installation. Cet outil de prédiction leur permet de réaliser des études afin d'optimiser les traitements acoustiques (« liners »), la géométrie de ces nacelles pour des études portant sur l'intérieur de la nacelle et des études de positionnement des moteurs et de design pour les effets d'installation. L'objectif de ce projet de maîtrise était donc de poursuivre le travail réalisé par [gousset, 2011] sur l'utilisation d'une méthode de lancer de rayons pour l'étude des effets d'installation des moteurs d'avion. L'amélioration du code, sa rapidité, sa fiabilité et sa généralité étaient les objectifs principaux. Le code peut être utilisé avec des traitements acoustiques de surfaces («liners») et peut prendre en compte le phénomène de la diffraction par les arêtes et enfin peut être utilisé pour réaliser des études dans des environnements complexes tels que les nacelles d'avion. Le code développé fonctionne en 3D et procéde en 3 étapes : (1) Calcul des faisceaux initiaux (division d'une sphère, demi-sphère, maillage des surfaces de la géométrie) (2) Propagation des faisceaux dans l'environnement d'étude : calcul de toutes les caractéristiques des rayons convergents (amplitude, phase, nombre de réflexions, ...) (3) Reconstruction du champ de pression en un ou

  10. Approche en soins primaires pour les problèmes de consommation de cannabis

    PubMed Central

    Turner, Suzanne D.; Spithoff, Sheryl; Kahan, Meldon

    2014-01-01

    Résumé Objectif Étudier les caractéristiques et complications cliniques de la consommation à risque de cannabis et du trouble de consommation de cannabis, et présenter un protocole en cabinet pour le dépistage, l’identification et la prise en charge de ces problèmes. Sources des données Une recherche des essais contrôlés, des études d’observation et des révisions sur l’usage de cannabis par les adolescents et les jeunes adultes; les méfaits psychiatriques et médicaux liés au cannabis; le trouble de consommation de cannabis et son traitement; et les lignes directrices sur la consommation à faible risque de cannabis a été effectuée dans PubMed. Message principal Les médecins doivent questionner tous leurs patients quant à leur usage de cannabis. Ils doivent questionner plus souvent les adolescents et jeunes adultes de même que les personnes qui présentent un risque élevé de problèmes liés au cannabis (qui ont un trouble psychiatrique ou de consommation de drogue concomitant). Les problèmes pouvant être causés par le cannabis, comme les troubles de l’humeur, la psychose et les symptômes respiratoires, devraient susciter des questions sur la consommation de cannabis. Aux patients qui rapportent un usage de cannabis, les médecins devraient poser des questions sur la fréquence et la quantité consommée, la présence de symptômes de tolérance ou de sevrage, les tentatives de réduire leur consommation et la présence de problèmes liés au cannabis. Les usagers à faible risque fument, inhalent ou ingèrent le cannabis occasionnellement sans aucun signe de dysfonctionnement scolaire, professionnel ou social; les personnes dont l’usage est problématique consomment tous les jours ou presque tous les jours, ont de la difficulté à réduire leur consommation et leur fonctionnement scolaire, professionnel et social est perturbé. Les médecins devraient offrir à tous les patients dont l’usage est problématique des conseils

  11. Project Lodestar Special Report.

    ERIC Educational Resources Information Center

    Brown, Peggy, Ed.

    1981-01-01

    The Association of American Colleges' (AAC) Project Lodestar is addressed in an article and descriptions of the pilot phase of the project at 13 institutions. In "Project Lodestar: Realistically Assessing the Future," Peggy Brown provides an overview of the project, which is designed to help colleges and universities in assessment of…

  12. Project Follow Through.

    ERIC Educational Resources Information Center

    Illinois State Office of the Superintendent of Public Instruction, Springfield. Dept. for Exceptional Children.

    The four Follow Through projects in Illinois are described and evaluated. These projects involve approximately 1,450 children in K-3 in Mounds, East Saint Louis, Waukegan, and Chicago. The Chicago project is subdivided into three individual projects and is trying three experimental programs. Emphasis is given to the nature of the environmental…

  13. Determinants of project success

    NASA Technical Reports Server (NTRS)

    Murphy, D. C.; Baker, B. N.; Fisher, D.

    1974-01-01

    The interactions of numerous project characteristics, with particular reference to project performance, were studied. Determinants of success are identified along with the accompanying implications for client organization, parent organization, project organization, and future research. Variables are selected which are found to have the greatest impact on project outcome, and the methodology and analytic techniques to be employed in identification of those variables are discussed.

  14. NCMS ESS 2000 Project

    NASA Technical Reports Server (NTRS)

    Gibbel, Mark; Bellamy, Marvin; DeSantis, Charlie; Hess, John; Pattok, Tracy; Quintero, Andrew; Silver, R.

    1996-01-01

    ESS 2000 has the vision of enhancing the knowledge necessary to implement cost-effective, leading-edge ESS technologies and procedures in order to increase U.S. electronics industry competitiveness. This paper defines EES and discusses the factors driving the project, the objectives of the project, its participants, the three phases of the project, the technologies involved, and project deliverables.

  15. eProject Builder

    SciTech Connect

    2014-06-01

    eProject Builder enables Energy Services Companies (ESCOs) and their contracting agencies to: 1. upload and track project-level Information 2. generate basic project reports required by local, state, and/or federal agencies 3. benchmark new Energy Savings Performance Contract (ESPC) projects against historical data

  16. Korea's School Grounds Projects

    ERIC Educational Resources Information Center

    Park, Joohun

    2003-01-01

    This article describes two projects which Korea has undertaken to improve its school grounds: (1) the Green School Project; and (2) the School Forest Pilot Project. The Korean Ministry of Education and Human Resources Development (MOE&HRI) recently launched the Green School Project centred on existing urban schools with poor outdoor…

  17. Earth System Science Project

    ERIC Educational Resources Information Center

    Rutherford, Sandra; Coffman, Margaret

    2004-01-01

    For several decades, science teachers have used bottles for classroom projects designed to teach students about biology. Bottle projects do not have to just focus on biology, however. These projects can also be used to engage students in Earth science topics. This article describes the Earth System Science Project, which was adapted and developed…

  18. Guidelines for Project Management

    NASA Technical Reports Server (NTRS)

    Ben-Arieh, David

    2001-01-01

    Project management is an important part of the professional activities at Kennedy Space Center (KSC). Project management is the means by which many of the operations at KSC take shape. Moreover, projects at KSC are implemented in a variety of ways in different organizations. The official guidelines for project management are provided by NASA headquarters and are quite general. The project reported herein deals with developing practical and detailed project management guidelines in support of the project managers. This report summarizes the current project management effort in the Process Management Division and presents a new modeling approach of project management developed by the author. The report also presents the Project Management Guidelines developed during the summer.

  19. Revetements antireflet-passivation a base de nitrure de silicium PECVD pour cellules solaires triple-jonction III-V/ Ge

    NASA Astrophysics Data System (ADS)

    Homier, Ram

    Dans le contexte environnemental actuel, le photovoltaïque bénéficie de l'augmentation des efforts de recherche dans le domaine des énergies renouvelables. Pour réduire le coût de la production d'électricité par conversion directe de l'énergie lumineuse en électricité, le photovoltaïque concentré est intéressant. Le principe est de concentrer une grande quantité d'énergie lumineuse sur des petites surfaces de cellules solaires multi-jonction à haute efficacité. Lors de la fabrication d'une cellule solaire, il est essentiel d'inclure une méthode pour réduire la réflexion de la lumière à la surface du dispositif. Le design d'un revêtement antireflet (ARC) pour cellules solaires multi-jonction présente des défis à cause de la large bande d'absorption et du besoin d'égaliser le courant produit par chaque sous-cellule. Le nitrure de silicium déposé par PECVD en utilisant des conditions standards est largement utilisé dans l'industrie des cellules solaires à base de silicium. Cependant, ce diélectrique présente de l'absorption dans la plage des courtes longueurs d'onde. Nous proposons l'utilisation du nitrure de silicium déposé par PECVD basse fréquence (LFSiN) optimisé pour avoir un haut indice de réfraction et une faible absorption optique pour l'ARC pour cellules solaires triple-jonction III-V/Ge. Ce matériau peut aussi servir de couche de passivation/encapsulation. Les simulations montrent que l'ARC double couche SiO2/LFSiN peut être très efficace pour réduire les pertes par réflexion dans la plage de longueurs d'onde de la sous-cellule limitante autant pour des cellules solaires triple-jonction limitées par la sous-cellule du haut que pour celles limitées par la sous-cellule du milieu. Nous démontrons aussi que la performance de la structure est robuste par rapport aux fluctuations des paramètres des couches PECVD (épaisseurs, indice de réfraction). Mots-clés : Photovoltaïque concentré (CPV), cellules

  20. Endectocide activity of a pour-on formulation containing 1.5 per cent ivermectin +0.5 per cent abamectin in cattle

    PubMed Central

    Silva, Heloisa Cristina; Prette, Nancy; Lopes, Welber Daniel Zanetti; Sakamoto, Cláudio Alessandro M; Buzzulini, Carolina; dos Santos, Thais Rabelo; Cruz, Breno Cayeiro; Teixeira, Weslen F Pires; Felippelli, Gustavo; Carvalho, Rafael Silveira; Maciel, Willian Giquelin; Soares, Vando Edésio; da Costa, Alvimar José

    2015-01-01

    The present work aimed to evaluate, through ten different studies, the therapeutic efficacy of a new pour-on formulation, containing 1.5 per cent ivermectin +0.5 per cent abamectin, against parasites of cattle. Results obtained on trials against Rhipicephalus (Boophilus) microplus showed that the pour-on combination of 1.5 per cent ivermectin +0.5 per cent abamectin obtained superior efficacy indexes against this ectoparasite, when compared with formulations containing 0.5 per cent ivermectin, 1 per cent ivermectin and the combination of 1 per cent abamectin +20 per cent levamisole. The results of efficacy of the ivermectin+abamectin and the 0.5 per cent ivermectin against Haematobia irritans were similar. Against Cochliomyia hominivorax larvae, all pour-on formulations tested (1.5 per cent ivermectin +0.5 per cent abamectin, 0.5 per cent ivermectin and 0.5 per cent abamectin), as well as 1 per cent doramectin administered subcutaneously, were considered ineffective. Cattle medicated with 1.5 per cent ivermectin +0.5 per cent abamectin, pour-on, remained free from parasitism by Dermatobia hominis larvae during 42 days (96 per cent efficacy), while values superior to 90 per cent were obtained by 0.5 per cent ivermectin (92 per cent) and 0.5 per cent abamectin (93 per cent) until the 42nd and 35th days post treatment, respectively. Against Haemonchus placei and Oesophagostomum radiatum, the pour-on of ivermectin+abamectin showed better efficacy than the 0.5 per cent ivermectin and 0.5 per cent abamectin. As to Cooperia punctata, there was no difference regarding efficacy results obtained by the avermectins combination and abamectin. The pour-on combination of 1.5 per cent ivermectin +0.5 per cent abamectin obtained high efficacy against R. (B.) microplus, D. hominis and some species of cattle gastrointestinal helminths when compared with formulations of 0.5 per cent ivermectin and 0.5 per cent abamectin administered through the same route. PMID:26392893

  1. Systeme de navigation hybride GPS/INS a faible cout pour la navigation robuste en environnement urbain

    NASA Astrophysics Data System (ADS)

    Lavoie, Philippe

    Les systemes de guidage actuellement utilises pour la navigation automobile sont principalement bases sur l'utilisation autonome d'un recepteur GPS. Ces systemes presentent neanmoins des pertes de performances importantes lorsqu'ils sont soumis a un environnement difficile. Afin de repondre a cette problematique, plusieurs auteurs proposent l'integration des systemes GPS et INS a l'interieur d'un seul systeme hybride. Toutefois, l'utilisation de capteurs inertiels a faible cout demeure encore aujourd'hui le principal obstacle a la commercialisation de ces systemes hybrides GPS/INS etant donne le manque de calibration ainsi que la nature hautement stochastique des erreurs de mesure de ces capteurs. Ce memoire propose la realisation d'un systeme de navigation hybride GPS/INS a faible cout pour la navigation robuste en environnement difficile. Les resultats obtenus demontrent que l'utilisation d'un tel modele permet d'ameliorer considerablement la stabilite de la solution de navigation en canyon urbain severe comparativement a l'utilisation autonome d'un recepteur GPS. Il a egalement ete demontre que la methode d'integration par couplage serre permettrait une diminution de l'ordre de 40% des erreurs de positionnement en environnement difficile comparativement a la methode d'integration par couplage lâche. Cet ouvrage propose egalement la mise en place d'une nouvelle approche pour la calibration des capteurs inertiels. Cette methode basee sur l'utilisation d'un filtre de Kalman etendu permet d'obtenir des performances equivalentes aux methodes iteratives classiques tout en facilitant l'implementation de la procedure de calibration a l'interieur d'un systeme temps reel. L'impact de la calibration des capteurs sur la solution de navigation a ete evalue et les resultats obtenus demontrent qu'une calibration adequate permettrait de reduire de plus de 50% les erreurs de positionnement, de vitesse et d'orientation en canyon urbain severe. Par la suite, une etude du

  2. Microscopie non-lineaire pour l'imagerie des cordes vocales

    NASA Astrophysics Data System (ADS)

    Deterre, Romain

    The vocal cords are two folds of epithelial tissues located in the larynx and are involved in production of the human voice. Despite their apparent simplicity, their internal structure is complex. Each fold can be divided into several layers with different mechanical properties. The gold standard for studying their structure - histology - has the inconvenience of being very invasive. Non-linear microscopy is an optical imaging technique which allows images to be taken in depth within samples in a non invasive manner. It also offers intrinsic contrasts, allowing the identification of certain fibrous proteins - elastin and collagen - which are responsible for the mechanical properties of epithelious tissues. The main goal of this research project was to assess nonlinear microscopy's performances for vocal fold imaging. The study has been broken down in two separate tasks. The first one was to evaluate the nonlinear modalities contrast against histology. For that purpose, we chose to first take images of thin samples and compare them to the corresponding histological slides. The second task was to make tests to transcribe the results obtained to in vivo imaging. A custom-built nonlinear imaging system was used for these experiments. It was developed to allow acquisition of wide-field images. A C++ based software was developped to control the microscope and allow treatment and visualization of the images. After being built, the system was further tested to check its performances in comparison with the theoretical limit as described in the literature. Thin slices of vocal folds were obtained from the team of Pr Christopher J. Hartnick from Massachusetts Eye and Ear Infirmary, Harvard Medical School. Specialists from his team analysed the histological samples to extract structural data from the vocal folds. A good correlation was measured between histological and nonlinear data. A first step in evaluating the possibility for translating these results towards in vivo

  3. Caracterisation electrique de materiaux en composite pour fuselages d'avions

    NASA Astrophysics Data System (ADS)

    Tse, William

    2011-12-01

    In the last decade or so, the rise of oil price is being felt all over the world. Oil being one of the primary sources of energy highly exploited, it plays a great role in the today's world economy, especially in the transport domain. To remain competitive, companies striving in this domain need therefore to modify their approach in the design phase of new or improved products. In the aerospace industry for example, weight reduction in aircraft structures have become a primordial aspect in the design phase of new models making them lighter and more efficient. In the framework of this project, the research is related to new weight-reduction of structural materials used in aircrafts. As of today, much research effort has been undertaken to find good substitutes to replace the materials presently used (aluminum). Several materials such as aluminum-lithium and carbon fibre composite bring great interest as substitutes. This last one presents superior mechanical properties over aluminum such as lightweight and rigidity; its electrical properties though remain still ambiguous. The objective of this project, proposed by Bombardier Core EMC, is to find a way to characterize the composite in a conventional way that would allow an extraction of its electrical properties (permittivity (epsilonr), conductivity (sigma), etc). In this Master thesis, the existing studies and characterization approaches for the composite material are presented and discussed. These approaches will help anticipate the electrical behaviour of the composite material under test. A comparison between known elements (ex: aluminum) and the composite material will also be tackled in order to gauge its conductivity level, particularly for low frequencies (≈ MHz), and up to high frequencies (≈ 12 GHz). Finally, some tests have been simulated with electromagnetic modelling software in order to reproduce and validate the experimental results. At the end of the thesis, a discussion/conclusion presenting the

  4. COMPUTER MODELING OF HIGH-LEVEL WASTE GLASS TEMPERATURES WITHIN DWPF CANISTERS DURING POURING AND COOL DOWN

    SciTech Connect

    Amoroso, J.

    2011-10-09

    This report describes the results of a computer simulation study to predict the temperature of the glass at any location inside a DWPF canister during pouring and subsequent cooling. These simulations are an integral part of a larger research focus aimed at developing methods to predict, evaluate, and ultimately suppress nepheline formation in HLW glasses. That larger research focus is centered on holistically understanding nepheline formation in HLW glass by exploring the fundamental thermal and chemical driving forces for nepheline crystallization with respect to realistic processing conditions. Through experimental work, the goal is to integrate nepheline crystallization potential in HLW glass with processing capability to ultimately optimize waste loading and throughput while maintaining an acceptable product with respect to durability. The results of this study indicated severe temperature gradients and prolonged temperature dwell times exist throughout different locations in the canister and that the time and temperatures that HLW glass is subjected to during processing is a function of pour rate. The simulations indicate that crystallization driving forces are not uniform throughout the glass volume in a DWPF (or DWPF-like) canister and illustrate the importance of considering overall kinetics (chemical and thermal driving forces) of nepheline formation when developing methods to predict and suppress its formation in HLW glasses. The intended path forward is to use the simulation data both as a driver for future experimental work and, as an investigative tool for evaluating the impact of experimental results. Simulation data will be used to develop laboratory experiments to more acutely evaluate nepheline formation in HLW glass by incorporating the simulated temperatures throughout the canister into the laboratory experiments. Concurrently, laboratory experiments will be performed to identify nepheline crystallization potential in HLW glass as a function of

  5. Anesthésie pour prothése totale de la hanche: à propos de 50 cas

    PubMed Central

    Serghini, Issam; Qamouss, Youssef; Zoubir, Mohamed; Lalaoui, Jaafar Salim; Koulali, Idrissi Khalid; Boughalem, Mohamed

    2015-01-01

    La chirurgie de la prothèse totale de la hanche (PTH) est une chirurgie fonctionnelle qui consiste en un remplacement d'une articulation endommagée afin d'améliorer la qualité de vie du patient. L'anesthésie pour PTH exige une préparation rigoureuse à l'intervention, la consultation d'anesthésie sera donc la clef de cette réussite. Nous avons réalisé une étude rétrospective concernant 60 arthroplasties totales de la hanche implantées chez 50 patients adultes, colligée au sevice de Traumatologie et de chirurgie orthopédique à l'Hôpital Militaire Avicenne de Marrakech sur une période étalée de Janvier 2010 au Décembre 2012. Nous avons évalué la prise en charge anesthésique: pré, per et postopératoire des patients opérés pour une PTH. La moyenne d’âge était de 56,5 ans, le sex-ratio était de 1,63 en faveur des hommes. L'indication prédominante était la coxarthrose primitive. L'anesthésie générale était la technique anesthésique la plus utilisée (66% des cas), l'intubation difficile était rencontrée chez 6% de nos patients. La durée moyenne de l'acte chirurgical était de 114 +/- 25,33 mn. 12% de nos patients ont présenté une hypotension artérielle peropératoire. L'incidence de la transfusion homologue perop était de 14%. Nous avons noté 08 cas de complications postop: 03 cas d'infection de la PTH 15 jours après l'intervention, 03 cas de descellement aseptique, 01 cas de luxation de PTH et 01 cas de descellement septique avec un recul moyen de 54 mois. PMID:27047619

  6. Breuner Marsh Restoration Project

    EPA Pesticide Factsheets

    Information about the San Francisco Bay Water Quality Project (SFBWQP) Breuner Marsh Restoration Project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

  7. CHP Project Development

    EPA Pesticide Factsheets

    Access information and tools to support the CHP project development process, including identifying if your facility is a good fit for CHP, the steps involved with CHP project development, and policies and incentives supportive of CHP.

  8. Project Matching Initiative

    EPA Pesticide Factsheets

    The Green Power Partnership's Project Matching initiative works to connect green power users with new, not-yet-built renewable energy projects that may align with their energy, environmental, and financial objectives.

  9. The Alzheimer's Project

    MedlinePlus

    ... Navigation Bar Home Current Issue Past Issues The Alzheimer's Project Past Issues / Spring 2009 Table of Contents ... of this page please turn Javascript on. The Alzheimer's Project A 4-Part Documentary Series Starting May ...

  10. Venezuela's Bolivarian Schools Project.

    ERIC Educational Resources Information Center

    Diaz, Maria Magnolia Santamaria

    2002-01-01

    Discusses efforts by the Venezuelan government to improve the nation's school infrastructure through the Bolivarian Schools Project administered by the Ministry of Education, Culture and Sport. The project set educational principles which are guiding current school building efforts. (EV)

  11. Reduced efficacy of moxidectin and abamectin in young red deer (Cervus elaphus) after 20 years of moxidectin pour-on use on a New Zealand deer farm.

    PubMed

    Mackintosh, C G; Cowie, C; Fraser, K; Johnstone, P; Mason, P C

    2014-01-17

    A study was undertaken on weaned 4-5 month old farmed red deer to test the efficacy of moxidectin and abamectin anthelmintics, given by three different routes of administration, compared with an untreated control. Faecal samples were collected on days 0, 7 and 14 for a faecal egg count reduction test (FECRT), blood samples were collected on days 0, 0.5, 1, 2, 3, 5, 7, 10 and 14 for pharmacokinetics, and the deer were killed on days 14 or 15 for total nematode count. The control group averaged 1264 adult Ostertagia-type nematode parasite species and treatment efficacy was 77.4% for moxidectin injection, 26% for oral moxidectin and 27.6% for pour-on moxidectin, while the treatment efficacy was 72.4% for abamectin injection, 70.1% for oral abamectin (Hi-Mineral) and 34.1% for pour-on abamectin. Both moxidectin and abamectin injections were significantly more efficacious than their equivalent pour-ons. There was a significant difference in efficacy between oral abamectin (Hi-Mineral) and oral moxidectin (P<0.01). The control group averaged 2956 adult lungworm (Dictyocaulus eckerti) and 50 Oesophagostomum venulosum in the large intestine and treatment efficacy against these nematodes was 100% for all treatments. There were negligible numbers of other gastro-intestinal nematodes. At slaughter, there was a significant correlation (P=0.02) between FEC and Ostertagia-type nematodes in the untreated controls. Relatively few eggs were found in faeces from treated animals at 7 and 14 days post-treatment despite significant worm burdens in all six treatment groups, suggesting egg-laying suppression in resistant nematodes, and all three different FECRT calculations tended to overestimate the efficacy of the treatments compared with actual nematode counts. Peak plasma concentrations (Cmax) for both actives were measured 12h after treatment for injection and oral and at 5 days for pour-on. Cmax (ng/ml) for moxidectin injection, oral and pour-on were 71.8, 8.3 and 0.4, respectively

  12. L’administration postnatale de corticoïdes pour traiter ou prévenir les affections pulmonaires chroniques chez les prématurés

    PubMed Central

    2002-01-01

    Le présent énoncé est conçu à l’intention des professionnels de la santé qui soignent des nouveau-nés et de jeunes nourrissons. Il vise à examiner les effets à court et à long terme de l’administration postnatale de corticoïdes systémiques et par inhalation pour prévenir ou traiter une affection pulmonaire chronique évolutive ou établie et à faire des recommandations quant à l’usage de corticoïdes chez les nourrissons à très faible poids de naissance. Le recours systématique à la dexaméthasone systémique pour prévenir ou traiter une affection pulmonaire chronique n’est pas recommandé chez les nourrissons à très faible poids de naissance.

  13. Lignes directrices canadiennes sur l’utilisation sécuritaire et efficace des opioïdes pour la douleur chronique non cancéreuse

    PubMed Central

    Kahan, Meldon; Mailis-Gagnon, Angela; Wilson, Lynn; Srivastava, Anita

    2011-01-01

    Résumé Objectif Présenter aux médecins de famille un résumé clinique pratique des lignes directrices canadiennes sur l’utilisation sécuritaire et efficace des opioïdes pour la douleur chronique non cancéreuse, produites par le National Opioid Use Guideline Group. Qualité des données Pour produire les lignes directrices, les chercheurs ont effectué une synthèse critique de la littérature médicale sur l’efficacité et l’innocuité des opioïdes pour la douleur chronique non cancéreuse et ont rédigé une série de recommandations. Un panel de 49 cliniciens experts de toutes les régions du Canada ont passé en revue l’ébauche et ont atteint un consensus sur 24 recommandations. Message principal Il est recommandé de faire un dépistage du risque de dépendance avant de prescrire des opioïdes. On recommande des opioïdes faibles (codéine et tramadol) pour une douleur de légère à modérée qui n’a pas répondu aux traitements de première intention. On peut essayer l’oxycodone, l’hydromorphone et la morphine chez les patients qui n’ont pas eu de soulagement avec des opioïdes plus faibles. Une faible dose initiale et une lente hausse du titrage sont recommandées, ainsi qu’une étroite surveillance du patient qu’on a d’abord renseigné. Les médecins doivent surveiller l’apparition de complications comme l’apnée du sommeil. La dose optimale est celle qui améliore le fonctionnement ou atténue les cotes d’évaluation de la douleur d’au moins 30 %. Pour la grande majorité des patients, la dose optimale sera bien en deçà de l’équivalent de 200 mg de morphine par jour. On recommande le sevrage progressif pour les patients qui n’ont pas répondu à un essai d’opioïdes adéquat. Conclusion Les opioïdes jouent un rôle important dans la prise en charge de la douleur chronique non cancéreuse, mais il faut en prescrire avec prudence pour limiter les dommages potentiels. Les nouvelles lignes directrices

  14. Project ArchimedeZ

    DTIC Science & Technology

    2015-05-18

    Project ArchimedeZ Think Tank Group # 1 SOS 15D 18 May 2015 Maj Chanel Burnell Capt Thomas Bryant Capt Andrew Chema Capt Richard... Project ArchimedeZ 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT...challenge, Think Tank Group 1 developed Project ArchimedeZ, an incentive-focused, learner-centric construct that utilizes existing distant learning resources

  15. GHPsRUS Project

    SciTech Connect

    Battocletti, Liz

    2013-07-09

    The GHPsRUS Project's full name is "Measuring the Costs and Benefits of Nationwide Geothermal Heat Pump Deployment." The dataset contains employment and installation price data collected by four economic surveys: (1)GHPsRUS Project Manufacturer & OEM Survey, (2) GHPsRUS Project Geothermal Loop Survey, (3) GHPsRUS Project Mechanical Equipment Installation Survey, and (4) GHPsRUS Geothermal Heat Pump Industry Survey

  16. Kansas Advanced Semiconductor Project

    SciTech Connect

    Baringer, P.; Bean, A.; Bolton, T.; Horton-Smith, G.; Maravin, Y.; Ratra, B.; Stanton, N.; von Toerne, E.; Wilson, G.

    2007-09-21

    KASP (Kansas Advanced Semiconductor Project) completed the new Layer 0 upgrade for D0, assumed key electronics projects for the US CMS project, finished important new physics measurements with the D0 experiment at Fermilab, made substantial contributions to detector studies for the proposed e+e- international linear collider (ILC), and advanced key initiatives in non-accelerator-based neutrino physics.

  17. THE ATLANTA SUPERSITE PROJECT

    EPA Science Inventory

    The Atlanta Supersites project is the first of two Supersites projects to be established during Phase I of EPA's Supersites Program; Phase 11 is being established through a Request for Assistance. The other initial project is in Fresno, California. The Supersites Program is par...

  18. Projection: A Bibliography.

    ERIC Educational Resources Information Center

    Pedrini, D. T.; Pedrini, Bonnie C.

    Sigmund Freud and his associates did much clinical work with the dynamic of projection, especially with regard to paranoid symptoms and syndromes. Much experimental work has also been done with projection. Sears evaluated the results of some of those studies. Murstein and Pryer sub-classified projection and reviewed typical studies. The…

  19. The Eggen Card Project

    NASA Astrophysics Data System (ADS)

    Silvis, G.

    2014-06-01

    (Abstract only) Olin Eggen, noted astronomer (1919-1998), left to us all his raw observation records recorded on 3x5 cards. This project is to make all this data available as an online resource. History and progress of the project will be presented. Project details available at: https://sites.google.com/site/eggencards/home.

  20. System Alternatives Project

    ERIC Educational Resources Information Center

    Petrait, James A.

    1977-01-01

    The Systems Alternatives Project is an attempt to develop open classroom alternatives within a modular scheduling system. Biology students are given both action and test objectives that emphasize individualization. Structure of the project is detailed and an attempt to analyze the project evaluation data statistically is included. (MA)

  1. The Sidewalk Project

    ERIC Educational Resources Information Center

    Church, William

    2005-01-01

    In this article, the author features "the sidewalk project" in Littleton High School. The sidewalk project is a collaboration of more than 40 high school physics students, 10 local mentors, and a few regional and national organizations who worked together to invent a way to heat a sidewalk with an alternative energy source. The project, which…

  2. Humane Education Projects Handbook.

    ERIC Educational Resources Information Center

    Junior League of Ogden, UT.

    This handbook was developed to promote interest in humane education and to encourage the adoption of humane education projects. Although specifically designed to assist Junior Leagues in developing such projects, the content should prove valuable to animal welfare organizations, zoos, aquariums, nature centers, and other project-oriented groups…

  3. Projects in History

    ERIC Educational Resources Information Center

    Harben, Cedric Y.

    1974-01-01

    Discusses two types of historical projects conducted by O-level pupils at Clifton College: studies of famous chemists and projects on the development of industrial chemicals. Indicates that a project in the history of chemistry is characterized by its practical and philosophical approach to chemistry study. (CC)

  4. The Llama Project.

    ERIC Educational Resources Information Center

    Ganzel, Candy; Stuglik, Jan

    2003-01-01

    At a suburban Indiana elementary school, the Project Approach serves as the basis of the curriculum in all Kindergarten classrooms. The four classes of 5- and 6-year-old children at this school chose to study llamas. This article discusses how the project evolved, describes the three phases of the project, and provides teachers' reflections on the…

  5. Little River Project.

    ERIC Educational Resources Information Center

    Naisbitt, Ian

    1995-01-01

    Describes the adoption of an old riverside landfill by an elementary school as a Habitat 2000 community project. Contains a "how-to" checklist for such a project, information on building school-community community partnerships, and promotional ideas for stewardship projects. (LZ)

  6. Military Communications with Special Focus on Tactical Communications for Network Centric Operations (Les communications militaires, et plus particulierement les communications tactiques pour les operations reseaux-centrees)

    DTIC Science & Technology

    2008-04-01

    six groupes apparentés : Radio logicielle (SDR), Gestion de réseaux et de ressources , Performances, Communications urbaines, Sécurité, et Futurs...MP-IST-083 Military Communications with Special Focus on Tactical Communications for Network Centric Operations (Les communications militaires...et plus particulièrement les communications tactiques pour les opérations réseaux-centrées) Papers presented at the RTO Information Systems

  7. Frequency Assignment, Sharing and Conservation in Systems (Aerospace). (l’Attribution, le partage et la conservation des frequences pour les systemes aeronautiques et spatiales)

    DTIC Science & Technology

    1999-01-01

    naturels du terrain (helicopteres et missiles de croisiere) et/ou des vitesse tres elevees, • des potentialites de contre mesure electroniques...pour les besoins de CEM. Concernant l’impact de remission radar sur les systemes de communication, le diagramme naturel d’antenne permet de...in RTO MP-13. 8-2 le faible nombre de capteur des antennes exploitees. AIRSYS a valide, avec le concours du SPOTI, les performances d’algorithmes

  8. Synthese et caracterisation d'heterostructures de (In)GaAsN pour l'optoelectronique

    NASA Astrophysics Data System (ADS)

    Beaudry, Jean-Nicolas

    2007-12-01

    This doctoral project proposes to study the incorporation of nitrogen to GaAs epitaxial layers grown on GaAs(001) substrates, a system that allows for systematically isolating the effect of nitrogen from that of indium. In this thesis we report on the results of a work where the focus was brought on (i) the growth kinetics of GaAs1-xNx during the metal-organic vapour phase epitaxy growth (OMVPE) (ii) the analysis of the physical and structural properties of GaAs1-xNx/GaAs heterostructures and (iii) the characterization of the nitrogen incorporation sites in the GaAs crystal lattice. Moreover, we present the results of exploratory studies aiming at the production of GaAs1-xN x/GaAs multilayers and to the growth of InyGa1-yAs1-x Nx quaternary alloys. These latter studies address issues that are closer to technological applications since they focus on process details pertaining to the fabrication of devices. Trimethylindum (TMIn), trimethylgallium (TMGa), tertiarybutylarsine (TBAs) and dimethylhydrazine (DMHy) were used as organometallic sources, a quite original combination since not widely encountered in the epitaxial growth field. TBAs has the great advantage of being far less dangerous than arsine in OMVPE processes, the latter being highly toxic and more prone to causing leaks on a large scale. Regarding the diversity of the growth parameters, the GaAs1-xNx/GaAs samples grown for this project definitely constitute one of the largest bank of its kind. The systematic monitoring of both the growth rate and the composition of these materials under varying growth conditions has, as a consequence, generated an impressive quantity of experimental data. In addition to the DMHy flow rate, the investigated parameters include, among others, the reactor pressure, the TMGa flow rate, the substrate temperature (from 500 to 650°C), and the V/III ratio. Not only have those results allowed to highlight important behaviors of the chemical species involved in surface reactions

  9. Developpement d'un catalogue de conception des chaussee pour les pays sub-sahariens

    NASA Astrophysics Data System (ADS)

    Koubikana Pambou, Claude Hugo

    Pavement surface evaluation in Sub-Saharan Africa (SSA) reveals severe, premature, and costly damages that require extensive maintenance. This is due to the limitations of tools used for pavement structural design as well as and the lack of the available calibration for the materials used. It is necessary to search for solutions for these failures and: * feed the discussion on durable roads for SSA area to meet the expectations of the trans- African highway projects of the new partnership for Africa (NEPAD); * provide simple and effective tools for pavement design and promote low cost for maintenance of road infrastructures; * provide users with functional and safety and durable road system. This catalogue, object and result of this work, was developed through a new tool for structural design (OCS-Chaussee), computed using Microsoft Excel worksheet. It uses iteration through empirical mechanics (ME) methods, applied to multilayer linear analysis using Odemark - Boussinesq method as a theoretical and conceptual basis for design pavement. The verification of obtained results was done with viscoelasticity assumption according Quijano's data (2010) and the pavement analysis software WINJULEA developed by US Army Corps of Engineers (USACE) and with the backcalculation's data from Varik and al. (2002) and local's data from South-African. The lifetime of each proposed roadway was estimated by using Asphalt Institute's transfer function and the Miner's law. It's hope that thoughtful use of this catalogue and the OCS- Chaussee will help advance reasonable road engineering solutions approaches, and training and make profitable budgets allocated to the construction and to road rehabilitation in Sub-Saharan Africa.

  10. Control of experimental Triatoma infestans populations: effect of pour-on cypermethrin applied to chickens under natural conditions in the Argentinean Chaco region.

    PubMed

    Amelotti, I; Catalá, S S; Gorla, D E

    2014-06-01

    Among peridomestic structures, chicken coops are sites of major importance for the domestic ecology of Triatoma infestans (Hemiptera: Reduviidae). The aim of this study was to evaluate in an experimental context the effects of a cypermethrin pour-on formulation applied to chickens on blood intake, moulting and mortality in T. infestans, under the natural climatic conditions of a region endemic for Chagas' disease. Experimental chicken huts were made of bricks and covered with plastic mosquito nets. Ninety fourth-instar nymphs were maintained in each hut. The study used a completely random design in which chickens in the experimental group were treated with a cypermethrin pour-on formulation. Five replicates (= huts) of the experimental and control groups were conducted. The number of live T. infestans, blood intake and moults to fifth-instar stage were recorded at 1, 5, 20, 35 and 45 days after the application of cypermethrin. Cumulative mortality was higher in nymphs exposed to treated chickens (> 71%) than in control nymphs (< 50%) (P < 0.01). Blood intake and moulting rate were lower in nymphs fed on treated chickens than in control nymphs (P < 0.05). Pour-on cypermethrin was able to cause significant mortality, although it did not eliminate the experimental population of T. infestans.

  11. Underestimation of Project Costs

    NASA Technical Reports Server (NTRS)

    Jones, Harry W.

    2015-01-01

    Large projects almost always exceed their budgets. Estimating cost is difficult and estimated costs are usually too low. Three different reasons are suggested: bad luck, overoptimism, and deliberate underestimation. Project management can usually point to project difficulty and complexity, technical uncertainty, stakeholder conflicts, scope changes, unforeseen events, and other not really unpredictable bad luck. Project planning is usually over-optimistic, so the likelihood and impact of bad luck is systematically underestimated. Project plans reflect optimism and hope for success in a supposedly unique new effort rather than rational expectations based on historical data. Past project problems are claimed to be irrelevant because "This time it's different." Some bad luck is inevitable and reasonable optimism is understandable, but deliberate deception must be condemned. In a competitive environment, project planners and advocates often deliberately underestimate costs to help gain project approval and funding. Project benefits, cost savings, and probability of success are exaggerated and key risks ignored. Project advocates have incentives to distort information and conceal difficulties from project approvers. One naively suggested cure is more openness, honesty, and group adherence to shared overall goals. A more realistic alternative is threatening overrun projects with cancellation. Neither approach seems to solve the problem. A better method to avoid the delusions of over-optimism and the deceptions of biased advocacy is to base the project cost estimate on the actual costs of a large group of similar projects. Over optimism and deception can continue beyond the planning phase and into project execution. Hard milestones based on verified tests and demonstrations can provide a reality check.

  12. Faut-il continuer à infiltrer le scalp par un anesthésique local pour une craniotomie?

    PubMed Central

    Doumiri, Mouhssine; Motiaa, Youssef; Razine, Rachid; Amor, Morad; Moussaoui, Abdelmajid; Kabbaj, Saad; Maazouzi, Wajdi

    2015-01-01

    Introduction Le maintien de la stabilité hémodynamique est un objectif primordial de l'anesthésie pour craniotomie. Peu d’études ont prouvé l'efficacité de l'infiltration du scalp par un anesthésique local pour le maintien de la stabilité hémodynamique après l'incision. L'objectif de notre travail est d’évaluer l'influence de l'infiltration de la ligne d'incision du scalp par la lidocaïne à 0,5% adrénalinée sur les paramètres hémodynamiques après incision pour craniotomie supratentorielle. Méthodes Étude prospective en double aveugle réalisée au bloc opératoire de l'hôpital des spécialités de Rabat sur une période d'une année incluant 80 malades programmés pour craniotomie supratentorielle. Les malades étaient randomisés par tirage au sort en 2 groupes: Le groupe 1 était infiltré par 40 ml du sérum salé adrénaliné (1/200 000) et le groupe 2 était infiltré par 40 ml de la lidocaïne 0,5% adrénalinée (1/200 000). Le critère de jugement principal était la pression artérielle moyenne (PAM) après l'incision. L’étude statistique a fait appel aux tests t de student et l'U- mann-whitney. Une valeur de p <0.05 était considérée significative. Résultats L’étude a inclus 80 patients (40 hommes et 40 femmes). L’âge moyen était 42,33±14,76 ans. Le poids moyen était 71,58 ±10 kg. Le 3/4 des patients était ASA 1, seulement 25% étaient ASA2. La durée moyenne de la chirurgie était de 252,06±38,62 mn. Les deux groupes étaient comparables concernant l’âge, le sexe, le poids, la durée d'intervention, le type d'abord chirurgical, la dose totale du fentanyl reçue jusqu'a l'incision, ainsi que les paramètres hémodynamiques avant l'incision. Après l'incision la FC moyenne a augmenté dans les deux groupes: 80,53±7,72 bpm dans le groupe contrôle et 76,85±8,52 bpm dans le groupe lidocaïne. La différence d'augmentation de la FC entre les deux groupes était statistiquement significative (p = 0,047). L

  13. Méthodes de remise en forme de faisceau par effet Brillouin pour amplificateur de puissance à fibre multimode

    NASA Astrophysics Data System (ADS)

    Lombard, L.; Georges, P.; Brignon, A.; Huignard, J. P.

    2006-10-01

    Nous proposons le concept de fibre à très large cœur pour l'amplification de faisceaux de haute puissance ou haute énergie associée à une méthode non linéaire de remise en forme. Nous présentons ici les principaux résultats théoriques et expérimentaux d'une étude de l'utilisation de l'effet Brillouin dans une fibre multimode comme méthode de remise en forme. Deux comportements intéressants sont observables : la conjugaison de phase et le beam cleanup (nettoyage de faisceau) Un modèle original nous permet de cerner les conditions d'obtention des deux comportements ; les résultats expérimentaux confirment les résultats du modèle. Une bonne qualité de faisceau est obtenue dans les deux cas.

  14. Supergroupes de Lie et solutions invariantes pour des equations differentielles non-lineaires a valeurs de Grassmann

    NASA Astrophysics Data System (ADS)

    Ayari, Mohamed Ali

    Le present travail est une contribution a l'etude des equations aux derivees partielles a valeurs de Grassmann (superequations) qui constituent une extension des equations usuelles en ce sens qu'elles contiennent en plus des variables dependantes et independantes anticommutantes (fermioniques). Nous nous sommes d'abord poses la question de savoir comment generaliser la notion de groupe de Lie de symetrie de telles superequations. En effet, de telles equations etant souvent supersymetriques, elles englobent une symetrie plus large que les equations usuelles. Ensuite, nous avons utilise la methode de reduction par symetrie pour donner des solutions explicites. Nous nous sommes attardes plus specifiquement sur la superequation de KdV (N = 2) qui apparai t comme la version supersymetrique des equations de KdV et KdV modifiee. Calculer la superalgebre de Lie de symetrie d'un supersysteme est une tache tres lourde qui depend de l'ordre et du nombre de variables dependantes et independantes. Afin de surmonter ce probleme algorithmique, nous avons realise une premiere version d'un code appele GLie permettant non seulement le calcul des superequations determinantes des systemes d'equations differentielles a valeurs de Grassmann mais aussi des equations aux derivees partielles usuelles. Ce programme ecrit dans le langage Maple permet d'economiser le temps et d'echapper aux inevitables erreurs de calculs.

  15. Développement d'une source plasma-laser pour lalithographie dans l'extrême ultraviolet

    NASA Astrophysics Data System (ADS)

    Soullié, G.; Lafon, C.; Rosch, R.; Babonneau, D.; Garaude, F.; Huelvan, S.; Trublet, T.; Bonnet, L.; Marmoret, R.

    2003-06-01

    Cet article présente notre rôle au sein du projet PREUVE (PRogramme Extrême UV), en particulier, le développement et la caractérisation d'une source EUV plasma-laser. Cette souce est basée sur l'utilisation du rayonnement EUV émis en face arrière d'une cible irradiée par laser. Le laser utilisé possède les caractéristiques suivantes: énergie de 2J, durée d'impulsion de 7ns et taux de répétition de 10Hz. La cible est composée d'étain supporté par un film de mylar. Nous présentons ici les diagnostics développés pour la caractérisation de cette source ainsi que les derniers résultats obtenus.

  16. DISCOURS QUI RÉSISTENT À L’OBJECTIVATION : QUE PEUT-ON EN TIRER POUR L’ÉVALUATION?

    PubMed Central

    Brousselle, Astrid

    2013-01-01

    Résumé L’évaluateur doit porter attention aux distorsions qu’il contribue à créer lorsqu’il utilise l’entrevue comme méthode de collecte de données. L’évaluation est un exercice politique qui, placé dans un contexte politique, peut favoriser l’émergence de discours de résistance à l’objectivation. À partir des entrevues que nous avons effectuées lors de l’évaluation du processus d’implantation de l’initiative ONUSIDA d’accès aux médicaments au Chili, nous illustrons différentes tactiques que les acteurs utilisent et qui peuvent soit attirer la sympathie de l’évaluateur, soit faire obstacle à son besoin d’information. Nous présentons une méthode d’analyse que l’évaluateur peut utiliser pour redonner du sens aux discours de résistance. PMID:23997421

  17. Intensification and forecasting of low-pour-point diesel fuel production via modelling reactor and stabilizer column at industrial unit

    NASA Astrophysics Data System (ADS)

    Belinskaya, N. S.; Frantsina, E. V.; Ivanchina, E. D.; Popova, N. V.; Zyryanova, I. V.; Averyanova, E. V.

    2016-09-01

    In this work forecast calculation of stabilizer column in the technology of low-pour- point diesel fuel production was modelled. The results of forecast calculation were proved by full-scale experiment at diesel fuel catalytic dewaxing unit. The forecast calculation and full- scale experiment made it possible to determine the ways of mass transfer intensification, as well as to increase the degree of hydrogen sulphide removal in the column, and thereby to decrease corrosiveness of the product stream. It was found out that maintenance of the reflux rate in the range of 80-90 m3/h and injection of additional vapourizing streams, such as stable naphtha from distillation unit (in the volume of 10-22 m3/h) and hydrogen-containing gas (in the volume of 100-300 m3/h), ensure complete elimination of corrosive hydrogen sulphide from the product stream. Reduction of stream corrosive activity due to suggested solutions extends service life of equipment and pipelines at industrial catalytic dewaxing unit.

  18. Annuaire du bureau des Longitudes : guide de données astronomiques 2012 pour l'observation du ciel

    NASA Astrophysics Data System (ADS)

    Institut de Mécanique Céleste Et de Calcul Des Ephémérides (Imcce); Bureau Des Longitudes (Bdl)

    2011-07-01

    Destiné aux astronomes, professionnels ou amateurs, cet ouvrage se décompose de la façon suivante : Les trois premiers chapitres de cet ouvrage contiennent : les données sur les différents calendriers et leur concordance, les fêtes légales en France, les différentes échelles de temps, les dates de décrets sur les heures légales en France métropolitaine parues au Journal Officiel depuis 1916 ; des notions nécessaires à la compréhension et à l'emploi des éphémérides contenues dans l'ouvrage. Les chapitres suivant fournissent des éphémérides astronomiques : les positions du Soleil et de la Lune ; les positions des planètes et de leurs satellites ; les positions des astéroïdes et des comètes ; les explications et des données pour l'observation de la surface du Soleil, de la Lune et des planètes ; des cartes du ciel, une liste de constellations et les positions et occultations des étoiles ; des données sur les éclipses de Soleil et de Lune et sur les phénomènes astronomiques ; la liste des observatoires astronomiques les plus connus.

  19. Le traitement familial des enfants et des adolescents anorexiques : Des lignes directrices pour le médecin communautaire

    PubMed Central

    Findlay, S; Pinzon, J; Taddeo, D; Katzman, DK

    2010-01-01

    L’anorexie mentale (AM) est une maladie grave qui met la vie en danger et qui fait généralement son apparition pendant l’adolescence. Les données probantes au sujet du traitement optimal de l’AM chez les enfants et les adolescents sont en croissance, mais il reste beaucoup à apprendre. Même si les démarches thérapeutiques actuelles varient au Canada et ailleurs, les données jusqu’à présent indiquent que le traitement familial (TF) est le plus efficace pour les enfants et les adolescents anorexiques. Un élément essentiel du modèle de TF, c’est que les parents sont investis de la responsabilité de rétablir la santé physique de leur enfant et de s’assurer de la reprise complète de son poids. Le médecin qui comprend les principes fondamentaux et la philosophie du TF peut mettre en place les éléments de cette intervention fondée sur des faits probants auprès des jeunes patients anorexiques et de leur famille.

  20. Des agents de santé communautaires pour la promotion de la santé des pasteurs nomades au Mali.

    PubMed

    Ag Ahmed, Mohamed Ali

    2016-12-01

    Au Mali, les nomades (des Maures, Touaregs et Peulhs) représentent environ 1,25 million de personnes. Les services de santé leur sont peu accessibles en raison de leur mobilité, liée à leur activité d'élevage. La question que se posent plusieurs intervenants en santé publique des pays où vivent ces nomades est de savoir comment améliorer leur santé. Dans ce commentaire, après un bref exposé des problèmes liés à l'accès aux services de santé, nous proposons une approche innovante et holistique de la santé, qui soutient que des agents de santé communautaires (ASC) pourraient contribuer à améliorer la santé des nomades en offrant conjointement des services de santé aux nomades et à leurs animaux (le concept « One Health » [d'Une Seule Santé]). Des pistes de réflexion sont dégagées, quant aux principaux défis pour leur efficacité et durabilité, qui sont la conception et gestion du programme, leur soutien par les communautés et leur intégration aux services de santé publique et vétérinaire.

  1. Managing Projects with KPRO

    NASA Technical Reports Server (NTRS)

    Braden, Barry M.

    2004-01-01

    How does a Project Management Office provide: Consistent, familiar, easily used scheduling tools to Project Managers and project team members? Provide a complete list of organization resources available for use on the project? Facilitate resource tracking and visibility? Provide the myriad reports that the organization requires? Facilitate consistent budget planning and cost performance information? Provide all of this to the entire organization? Provide for the unique requirement of the organization? and get people to use it? Answer: Implementation of the Kennedy space Center Projects and Resources Online (KPRO), a modified COTS solution.

  2. Comparing project investments

    SciTech Connect

    Wirasinghe, E.

    1988-06-01

    HPI managers are often faced with the nightmare of deciding on which projects to invest their limited capital. There usually are more potential projects than money available for investment. A typical strategy is in two parts: select a method to rank the projects; consider corporate policy to make a choice. This discussion highlights various ways to rank projects. After a discussion of some ranking methods, three cases are presented where it appears the wrong project was selected - either because of incorrect advice or because data were intentionally manipulated.

  3. Adaptive Composite Map Projections.

    PubMed

    Jenny, B

    2012-12-01

    All major web mapping services use the web Mercator projection. This is a poor choice for maps of the entire globe or areas of the size of continents or larger countries because the Mercator projection shows medium and higher latitudes with extreme areal distortion and provides an erroneous impression of distances and relative areas. The web Mercator projection is also not able to show the entire globe, as polar latitudes cannot be mapped. When selecting an alternative projection for information visualization, rivaling factors have to be taken into account, such as map scale, the geographic area shown, the map's height-to-width ratio, and the type of cartographic visualization. It is impossible for a single map projection to meet the requirements for all these factors. The proposed composite map projection combines several projections that are recommended in cartographic literature and seamlessly morphs map space as the user changes map scale or the geographic region displayed. The composite projection adapts the map's geometry to scale, to the map's height-to-width ratio, and to the central latitude of the displayed area by replacing projections and adjusting their parameters. The composite projection shows the entire globe including poles; it portrays continents or larger countries with less distortion (optionally without areal distortion); and it can morph to the web Mercator projection for maps showing small regions.

  4. Green River Formation water flood demonstration project. Final report

    SciTech Connect

    Pennington, B.I.; Dyer, J.E.; Lomax, J.D. |; Deo, M.D.

    1996-11-01

    The objectives of the project were to understand the oil production mechanisms in the Monument Butte unit via reservoir characterization and reservoir simulations and to transfer the water flooding technology to similar units in the vicinity, particularly the Travis and the Boundary units. The reservoir characterization activity in the project basically consisted of extraction and analysis of a full diameter core, Formation Micro Imaging (FMI) logs from several wells and Magnetic Resonance Imaging (MRI) logs from two wells. In addition, several side-wall cores were drilled and analyzed, oil samples from a number of wells were physically and chemically characterized (using high-temperature gas chromatography), oil-water relative permeabilities were measured and pour points and cloud points of a few oil samples were determined. The reservoir modeling activity comprised of reservoir simulation of all the three units at different scales and near well-bore modeling of the wax precipitation effects. The reservoir simulation activities established the extent of pressurization of the sections of the reservoirs in the immediate vicinity of the Monument Butte unit. This resulted in a major expansion of the unit and the production from this expanded unit increased from about 300 barrels per day to about 2,000 barrels per day.

  5. Quality Assurance Project Plan for Citizen Science Projects

    EPA Pesticide Factsheets

    The Quality Assurance Project Plan is necessary for every project that collects or uses environmental data. It documents the project planning process and serves as a blueprint for how your project will run.

  6. Santé sexuelle et reproductive des adolescentes de Bobo Dioulasso, Burkina Faso: place de la communication parents-adolescentes pour la réduction des risques

    PubMed Central

    Some, Donmozoun Télesphore; Some, Der Adolphe; Hien, Hervé; Diallo, Ramata; Zingue, Dézémon; Diallo, Ibrahim; Diagbouga, Serge; Dao, Blami

    2012-01-01

    Introduction Les adolescentes sont très vulnérables face aux Infections Sexuellement Transmissibles (IST) et au VIH/SIDA. Notre étude a pour objectifs d’explorer la qualité de la communication entre les adolescentes et leurs parents sur les IST/VIH/SIDA et de recueillir leurs suggestions pour l’amélioration de cette communication. Méthodes L’étude était transversale qualitative sur 2 mois. La population de l’étude était composée par des adolescentes de 13 à 17 ans et leurs parents habitant la ville de Bobo Dioulasso. Vingt (20) adolescentes scolarisées ont été tirés au sort dans trois établissements secondaires et 20 autres non scolarisées choisies de façon accidentelle dans la ville. Les informations ont été collectées à l’aide de 8 focus groups. Les discussions ont été enregistrées sur cassettes, retranscrites en verbatim, et analysées à l’aide du logiciel QSR NVIVO 2.0. Résultats Les adolescentes et leurs parents communiquent très peu ou pas sur les questions des IST/VIH/SIDA; l’auto-information par les paires ou les médias est la première source d’information. Pour les parents, l’information existe et est accessible aux adolescentes alors que pour ces dernières, leurs connaissances de ces maladies sont parfois erronées. L’abstinence, la fidélité et le dépistage volontaire comme moyen de prévention sont très peu évoqués par les adolescentes de même que par leurs parents. Conclusion La communication parents-adolescentes est insuffisante voire absente dans certains milieux. Il est urgent de conduire des actions auprès des adolescentes et leurs parents pour mieux les informer sur les IST/VIH/SIDA et améliorer la communication sur ces maladies. PMID:22655099

  7. Le POSSUM: un bon score pour prédire la mortalité du sujet âgé opéré en urgence?

    PubMed Central

    Mzoughi, Zeineb; Bayar, Rached; Djebbi, Achref; Talbi, Ghofrane; Romdhane, Hayfa; Aloui, Wafa; Lassaad, Gharbi; Khalfallah, Mohamed Taher

    2016-01-01

    Introduction Le POSSUM (Physiologic and Operative Severity Score for the enUmeration of Mortality and morbidity) est un score prédictif de mortalité qui est largement utilisé en chirurgie aortique élective et abdominale. Le but de notre étude est une validation du POSSUM chez le sujet âgé (>70 ans) opéré pour une urgence digestive. Nous nous proposons d'étudier les meilleurs seuils du POSSUM, composé d'un score physiologique et d'un score opératoire, pour prédire la mortalité dans cette population. Méthodes Il s'agit d'une étude rétrospective analytique de type cas témoin à partir d'une série de 291 patients d'âge ≥ 70 ans opérés pour une urgence digestive. Ces patients étaient répartis en deux groupes comportant 50 patients chacun. Le groupe "DC": patients décédés en post opératoire immédiat et le Groupe témoin "SURV" choisis par tirage au sort. Nous avons analysé la fiabilité du POSSUM pour prédire la mortalité et la morbidité. Par la suite, nous avons établi des courbes de ROC pour définir les seuils qui donnent le meilleur couple sensibilité/spécificité. Résultats Le score physiologique, le score opératoire et les taux de morbidité et mortalité prédits par POSSUM et la mortalité prédit par P-POSSUM représentaient des facteurs prédictifs de mortalité (P <0,0001). Les valeurs seuils du score physiologique et du score opératoire qui donnent le meilleur couple sensibilité/spécificité, étaient respectivement de 23 et 15. Conclusion Prédire la mortalité permet de cibler la prise en charge et d'informer le patient et sa famille des risques encourus. PMID:27795763

  8. Tomographie par coherence optique pour le guidage de chirurgies minimalement invasives du rachis

    NASA Astrophysics Data System (ADS)

    Beaudette, Kathy

    Adolescent idiopathic scoliosis is a complex 3D deformity of the spine which requires surgical intervention in severe cases of the condition. The existing corrective procedure of scoliosis is very invasive; it involves a long incision and a large instrumentation, in addition to the fusion of a section of the spine. To improve postoperative conditions and to preserve patients' spinal flexibility, novel fusionless surgical approaches involving growth modulation are under investigation. With this objective in mind, a multidisciplinary team from École Polytechnique of Montreal and Sainte-Justine University Hospital Research Center is developing a surgical technique based on the insertion of micro-staples between vertebral growth plates and corresponding intervertebral disks. Each micro-staple passively modulates the vertebral growth on the convex side of the scoliotic curvature. This modulation modifies vertebral geometry which, for scoliotic patients, presents a wedging deformity. The modulation induced by these devices could lead to the correction of the curvature of the spine. This innovative procedure would preserve the flexibility of the spine as well as the health of intervertebral disks, in addition to being compatible with minimally invasive approaches. However, to be efficient, the micro-staples must be placed at the junction between the growth plate and the disk with a sub-millimeter precision. An intraoperative guiding system is therefore required to ensure the success of the intervention. Optical coherence tomography (OCT) is a promising candidate for this application. OCT is based on low-coherence interferometry and provides cross-sectional images with a resolution about 10 μm for a depth of 2 to 3 mm. This technique allows for the real-time acquisition of images and is compatible with endoscopy, thereby showing a potential for the intraoperative guidance of minimally invasive surgeries (MIS) of the spine. The main objective of this master's project is

  9. Microstructure et proprietes electriques de l'oxyde de vanadium pour les microbolometres

    NASA Astrophysics Data System (ADS)

    Cadieux, Catherine

    section contains V3O7 in addition to the multiple orientations of V2O5. Those germinations which have already been observed but not explained in literature can be attributed to the accumulation of germination centers, a stress buildup for the crystalline sections, and a substrate heating caused by the ions bombardment. This last effect is also suggested to be the cause of the amorphous phase crystallisation for the films with longer deposition times. Films deposited at different temperatures show the same microstructure transitions. Two different behavior regimes can be proposed as function of the adatoms' energy. For low temperature, increasing the adatom energy increases the diffusion which promotes the formation of the lowest surface energy stoichiometry and orientation, V2O 5(001). At higher temperature, energy is sufficient to form more energetically expensive orientation and phases. Resistivity is strongly dependant on grain boundaries density as seen by its relationship with lateral grain size. The thin film resistivity is also increased with the number of different crystallographic orientation present in it. To circumvent the high sheet resistance of the deposited single layer films, a multilayer stacking of alternating oxides and metal layers has been deposited. This approach has permitted this project's industrial collaborator to obtain a sheet resistance of 250 kO/□and a TCR of -1.59 %/K. The microstructure of the multilayer is however very heterogeneous. Not only can the metal layers be identified, it is also possible to observe the amorphous to polycrystalline transition described higher for every oxide layer. This multilayer, as well as the best single layer film produced have been annealed for 2 hours at 400°C in high vacuum. The annealed multilayer doesn't show any diffraction peaks, has very low resistance, and an almost null TCR generally attributed to metallic compounds We suggest that the diffusion of the vanadium layers into the stack created a

  10. Environmental Science: 49 Science Fair Projects. Science Fair Projects Series.

    ERIC Educational Resources Information Center

    Bonnet, Robert L.; Keen, G. Daniel

    This book contains 49 science fair projects designed for 6th to 9th grade students. Projects are organized by the topics of soil, ecology (projects in habitat and life cycles), pests and controls (projects in weeds and insects), recycling (projects in resources and conservation), waste products (projects in decomposition), microscopic organisms,…

  11. Fabrication de transistors mono-electroniques en silicium pour le traitement classique et quantique de l'information: une approche nanodamascene

    NASA Astrophysics Data System (ADS)

    Harvey-Collard, Patrick

    Les transistors mono-electroniques (SETs) sont des dispositifs ayant un grand potentiel d'applications, comme la detection de charge ultra-sensible, la logique a basse consommation de puissance, la memoire ou la metrologie. De plus, la possibilite de pieger un seul electron et de manipuler son etat de spin pourrait permettre des applications en informatique quantique. Le silicium est un materiau interessant pour fabriquer l'ilot d'un SET. Son gap semi-conducteur permet le fonctionnement du dispositif dans le regime a un seul electron ou trou et pourrait permettre d'etendre la plage d'operation du SET en temperature en augmentant l'energie d'addition du diamant central de la valeur du gap. En outre, le silicium beneficie de plus de quarante annees d'expertise en microfabrication et d'une compatibilite avec la technologie metal--oxyde--semi-conducteur complementaire (CMOS). Cependant, la fabrication de ces dispositifs fait face a de serieuses limitations a cause de la taille nanometrique requise pour l'ilot. A ce jour, les procedes de fabrication proposes permettant l'operation a la temperature ambiante sont trop peu reproductibles pour permettre des applications a grande echelle. Dans ce memoire de maitrise, la fabrication de transistors mono-electroniques en silicium (Si-SETs) pour le traitement classique et quantique de l'information est realisee avec un procede nanodamascene. Le polissage chimico-mecanique (CMP) est introduit comme etape clef de la fabrication du transistor, permettant le controle au nanometre pres (nanodamascene) de l'epaisseur du transistor. Cet outil permet la fabrication de dispositifs ayant une geometrie auparavant impossible a realiser et ouvre la porte a l'innovation technologique. De plus, un procede de gravure du silicium par plasma a couplage inductif (ICP) est developpe pour permettre la fabrication de nanostructures de silicium sur une nanotopographie alliant le nano et le 3D. Les Si-SETs fabriques sont caracterises a basse

  12. ELIMINATION OF THE CHARACTERIZATION OF DWPF POUR STREAM SAMPLE AND THE GLASS FABRICATION AND TESTING OF THE DWPF SLUDGE BATCH QUALIFICATION SAMPLE

    SciTech Connect

    Amoroso, J.; Peeler, D.; Edwards, T.

    2012-05-11

    A recommendation to eliminate all characterization of pour stream glass samples and the glass fabrication and Product Consistency Test (PCT) of the sludge batch qualification sample was made by a Six-Sigma team chartered to eliminate non-value-added activities for the Defense Waste Processing Facility (DWPF) sludge batch qualification program and is documented in the report SS-PIP-2006-00030. That recommendation was supported through a technical data review by the Savannah River National Laboratory (SRNL) and is documented in the memorandums SRNL-PSE-2007-00079 and SRNL-PSE-2007-00080. At the time of writing those memorandums, the DWPF was processing sludge-only waste but, has since transitioned to a coupled operation (sludge and salt). The SRNL was recently tasked to perform a similar data review relevant to coupled operations and re-evaluate the previous recommendations. This report evaluates the validity of eliminating the characterization of pour stream glass samples and the glass fabrication and Product Consistency Test (PCT) of the sludge batch qualification samples based on sludge-only and coupled operations. The pour stream sample has confirmed the DWPF's ability to produce an acceptable waste form from Slurry Mix Evaporator (SME) blending and product composition/durability predictions for the previous sixteen years but, ultimately the pour stream analysis has added minimal value to the DWPF's waste qualification strategy. Similarly, the information gained from the glass fabrication and PCT of the sludge batch qualification sample was determined to add minimal value to the waste qualification strategy since that sample is routinely not representative of the waste composition ultimately processed at the DWPF due to blending and salt processing considerations. Moreover, the qualification process has repeatedly confirmed minimal differences in glass behavior from actual radioactive waste to glasses fabricated from simulants or batch chemicals. In contrast, the

  13. Conception et exploitation d'une structure active pour une aile laminaire adaptative experimentale

    NASA Astrophysics Data System (ADS)

    Coutu, Daniel

    This doctoral research contributed to the success of the project CRIAQ 7.1, demonstrating the capability of a morphing laminar wing to reduce fuel consumption. Respectively, this thesis shows the design of the experimental wing and its operation in a subsonic wind tunnel (Mach numbers of 0.2 to 0.3 with angles of attack between -1 and 2°). First of all, the morphing wing is formed of a composite laminate linked to an actuation system to build an active structure capable of modifying the wing upper surface geometry. The design was performed using a new developed methodology to solve aero-structural problems. Using ANSYS software, the finite elements method was applied to model the different possible active structure configurations Aerodynamic loads applied over the active structure as well as targeted morphed geometries have been provided by the Ecole Polytechnique team. Next, laminar flow enhancements allowed by each active structure configuration we' re evaluated using the aerodynamic solver XFoil 6.96. A best trade-off between aerodynamic performance and energy needed for wing morphing was found using a multi-objective optimization technique. Among the retained stable configurations, a 4-ply composite laminated shell driven by 2 actuation lines was retained. Thereafter, the research effort focused on the exploitation of the morphing capabilities of the experimental wing over each given set of flow conditions. Therefore, once the prototype was built, the structural model was refined, calibrated and coupled with the aerodynamic solver to accurately predict the aero-structural behavior in the wind tunnel. Optimal morphing wing shapes were numerically calculated using a generalized pattern search algorithm and a local search routine to refine the solution. In the wind tunnel, this open-loop control approach allowed an average 25% laminar flow regime extension over the wing prototype upper surface. Consequently, an average 18.5% profile drag reduction was measured by

  14. Planification de trajectoires pour placement automatise de fibres sur surfaces de geometries complexes

    NASA Astrophysics Data System (ADS)

    Hely, Clement

    During the past 50 years, the use of composite materials drastically increase, mainly thanks to the interest of aeronautical industries for these strong and lightweight materials. To improve the productivity of composite materials manufacturing some of the largest aeronautics companies began to develop automated processes such as Automated Fibre Placement (AFP). The AFP workcells currently used by the industry were mainly developed for production of large, nearly flat, plates with low curvatures such as aircraft fuselages. However, the fields of aeronautics and sport goods production begin nowadays to show an interest for manufacturing of smaller and more complex parts. The aim of the project in which this research takes place is to design a new AFP workcell and to develop new techniques allowing production of parts with small size and complex geometry. The work presented in this thesis focuses on the path planning on multi-axial revolution surfaces, e.g. Y-shaped tubes of constant circular cross section. Several path planning algorithms will be presented aiming at the exhaustive coverage of a mandrel with pre-impregnated (prepreg) composite tape. The methodology used in two of these algorithms is to individually cover each branch of the Y-shaped part with paths deriving from a helix. In the first one, the helix will be cut at the boundary between a branch and the junction region (algorithm HD) while in the second (algorithm HA) the pseudo-helix path can be adjusted to follow this boundary. These two methods were shown to have some drawbacks compromising their practical use and possibly leading to parts with diminished mechanical properties. To avoid these drawbacks, two others algorithms were developed with a new methodology. With them, the aim is to cover two branches of the Y-shape with a continuous course (i.e. without cut). The first one uses a well known strategy which defines plies with a constant fibre orientation. Parallel paths are then computed to

  15. Microparticules magnetiques therapeutiques pour la chimio-embolisation ciblee du foie

    NASA Astrophysics Data System (ADS)

    Pouponneau, Pierre

    The proposed project introduces a therapeutic vector for the liver tumor treatment based on a new magnetic targeting strategy. The hypothesis of this thesis is that it is possible to design a therapeutic vector compatible with the constraints of liver chemoembolization and MRN in the hepatic artery to target the right/left lobe of the liver. This vector, referred to as therapeutic magnetic microcarriers (TMMC) is loaded with an antitumor drug and magnetic nanoparticles. A design study, based on a mathematical modeling of microparticle steering and a literature review on the chemoembolization, was done to optimize TMMC properties (diameter, Ms, nanoparticle choice and loading). Iron-cobalt (FeCo) nanoparticles were synthesized and annealed under inert conditions to improve their magnetic properties. These ferromagnetic nanoparticles possessed a mean diameter of 200 nm, measured by transmission electronic microscopy, and an Ms of 205 emu g-1, determined with a vibrating sample magnetometer. These nanoparticles, by their high Ms, allowed reducing by half the magnetic material loading in TMMC compared with the encapsulation of iron oxide nanoparticles. The nanoparticles coated with 10-nm graphite shell were protected from oxidation and thus they maintained their excellent magnetic properties. The design study was experimentally confirmed by the encapsulation of FeCo nanoparticles into poly(lactic-co-glycolic acid (PLGA) biodegradable microparticles. The latter were steered in vitro in a phantom mimicking the hepatic artery and its right/left bifurcation. The steering efficiency was determined by steering video analysis and the iron and cobalt ion concentrations were assayed by atomic absorption spectrometry in each bifurcation. FeCo nanoparticles were then co-encapsulated with doxorubicin (DOX) into PLGA microparticles. DOX is an antitumor drug widely used for HCC treatments. TMMC possessed a mean diameter of 52 mum, an Ms of 72 emu g-1 and they were loaded with 37% (w

  16. Developpement d'un film antibacterien ayant des proprietes de glissement pour une meilleure processabilite

    NASA Astrophysics Data System (ADS)

    Silverwood, Richard

    Product safety is of crucial importance for the food industry. The challenge of food safety is evidenced by the number of food poisoning in Canada and worldwide. An outbreak of listeriosis in 2008, having put the safety of Canadians at risk, has motivated the revision of the strategy for food safety in Canada. In this context, a collaboration between two major industrial players in Quebec and École Polytechnique de Montréal was initiated. This collaboration is supported by the creation of the Research Chair for safe, smart and sustainable food. One of the many forefront projects of this research chair is to develop a package having a bactericidal effect. Many compounds are currently available for incorporation into a finished product. Zinc Omadine™ by ArchChemicals and Irgaguard™ by BASF are some examples of products that have proven themselves. However, the incorporation of a bactericidal agent in a product having a direct contact with food must meet certain safety criteria. Thus, an overview of various antibacterial agents is made in terms of their effectiveness and their potential use in packaging a food product. To date, no technology allows easy incorporation of an antibacterial agent in a polymer matrix. Antibacterial constituents of the mixture with the polymer melt will provide the simplicity pursued. We chose nano zinc oxide as the main antibacterial agent for its mode of action, its great potential for sustainability and its ability not to migrate out of the polyethylene polymer matrix. Moreover, the effect of trace element at very low concentrations is validated. To increase efficiency, good dispersion is achieved by adding a polyethylene with maleic anhydride grafted groups. The increase in antibacterial properties by this change has been proven. Although these films exhibit a marked bactericidal effect, a lack of persistence of the antibacterial effect was noticed. This is probably due to a rearrangement of the molecular structure on the surface

  17. Project Surveillance and Maintenance Plan. [UMTRA Project

    SciTech Connect

    Not Available

    1985-09-01

    The Project Surveillance and Maintenance Plan (PSMP) describes the procedures that will be used by the US Department of Energy (DOE), or other agency as designated by the President to verify that inactive uranium tailings disposal facilities remain in compliance with licensing requirements and US Environmental Protection Agency (EPA) standards for remedial actions. The PSMP will be used as a guide for the development of individual Site Surveillance and Maintenance Plans (part of a license application) for each of the UMTRA Project sites. The PSMP is not intended to provide minimum requirements but rather to provide guidance in the selection of surveillance measures. For example, the plan acknowledges that ground-water monitoring may or may not be required and provides the (guidance) to make this decision. The Site Surveillance and Maintenance Plans (SSMPs) will form the basis for the licensing of the long-term surveillance and maintenance of each UMTRA Project site by the NRC. Therefore, the PSMP is a key milestone in the licensing process of all UMTRA Project sites. The Project Licensing Plan (DOE, 1984a) describes the licensing process. 11 refs., 22 figs., 8 tabs.

  18. The CHPRC Columbia River Protection Project Quality Assurance Project Plan

    SciTech Connect

    Fix, N. J.

    2008-11-30

    Pacific Northwest National Laboratory researchers are working on the CHPRC Columbia River Protection Project (hereafter referred to as the Columbia River Project). This is a follow-on project, funded by CH2M Hill Plateau Remediation Company, LLC (CHPRC), to the Fluor Hanford, Inc. Columbia River Protection Project. The work scope consists of a number of CHPRC funded, related projects that are managed under a master project (project number 55109). All contract releases associated with the Fluor Hanford Columbia River Project (Fluor Hanford, Inc. Contract 27647) and the CHPRC Columbia River Project (Contract 36402) will be collected under this master project. Each project within the master project is authorized by a CHPRC contract release that contains the project-specific statement of work. This Quality Assurance Project Plan provides the quality assurance requirements and processes that will be followed by the Columbia River Project staff.

  19. Project GlobWave

    NASA Astrophysics Data System (ADS)

    Busswell, Geoff; Ash, Ellis; Piolle, Jean-Francois; Poulter, David J. S.; Snaith, Helen; Collard, Fabrice; Sheera, Harjit; Pinnock, Simon

    2010-12-01

    The ESA GlobWave project is a three year initiative, funded by ESA and CNES, to service the needs of satellite wave product users across the globe. Led by Logica UK, with support from CLS, IFREMER, SatOC and NOCS, the project will provide free access to satellite wave data and products in a common format, both historical and in near real time, from various European and American SAR and altimeter missions. Building on the successes of similar projects for Sea Surface Temperature and ocean colour, the project aims to stimulate increased use and analysis of satellite wave products. In addition to common-format satellite data the project will provide comparisons with in situ measurements, interactive data analysis tools and a pilot spatial wave forecast verification scheme for operational forecast production centres. The project will begin operations in January 2010, with direction from regular structured user consultation.

  20. Battleground Energy Recovery Project

    SciTech Connect

    Bullock, Daniel

    2011-12-31

    In October 2009, the project partners began a 36-month effort to develop an innovative, commercial-scale demonstration project incorporating state-of-the-art waste heat recovery technology at Clean Harbors, Inc., a large hazardous waste incinerator site located in Deer Park, Texas. With financial support provided by the U.S. Department of Energy, the Battleground Energy Recovery Project was launched to advance waste heat recovery solutions into the hazardous waste incineration market, an area that has seen little adoption of heat recovery in the United States. The goal of the project was to accelerate the use of energy-efficient, waste heat recovery technology as an alternative means to produce steam for industrial processes. The project had three main engineering and business objectives: Prove Feasibility of Waste Heat Recovery Technology at a Hazardous Waste Incinerator Complex; Provide Low-cost Steam to a Major Polypropylene Plant Using Waste Heat; and Create a Showcase Waste Heat Recovery Demonstration Project.

  1. Computer Assets Recovery Project

    NASA Technical Reports Server (NTRS)

    CortesPena, Aida Yoguely

    2010-01-01

    This document reports on the project that was performed during the internship of the author. The project involved locating and recovering machines in various locations that Boeing has no need for, and therefore requires that they be transferred to another user or transferred to a non-profit organization. Other projects that the author performed was an inventory of toner and printers, loading new computers and connecting them to the network.

  2. Operational waste volume projection

    SciTech Connect

    Koreski, G.M.; Strode, J.N.

    1995-06-01

    Waste receipts to the double-shell tank system are analyzed and wastes through the year 2015 are projected based on generation trends of the past 12 months. A computer simulation of site operations is performed, which results in projections of tank fill schedules, tank transfers, evaporator operations, tank retrieval, and aging waste tank usage. This projection incorporates current budget planning and the clean-up schedule of the tri-party agreement. Assumptions are current as of June 1995.

  3. Frequency Comb Cooling Project

    DTIC Science & Technology

    2014-03-18

    frequency combs ). Recently the power and spectral coverage of frequency combs have grown considerably with projected 1. REPORT DATE (DD-MM-YYYY) 4. TITLE...Aug-2011 18-May-2012 Approved for Public Release; Distribution Unlimited Final report on frequency comb cooling project The views, opinions and/or... frequency combs ). Recently the power and spectral coverage of frequency combs have grown considerably with projected average powers above 10 kW. We

  4. KSC History Project

    NASA Technical Reports Server (NTRS)

    Snaples, Lee

    2001-01-01

    The project is a joint endeavor between Dr. Henry Dethloff and myself and is producing a number of products related to KSC history. This report is a summary of those projects. First, there is an overview monograph covering KSC history. Second, there is a chapter outline for an eventual book-length history. Third, there is monograph on safety at KSC. Finally, there is a web page and database dedicated to the KSC oral history project.

  5. Parametres pour l'instabilite fluidelastique: Derivees de stabilite et amortissement diphasique

    NASA Astrophysics Data System (ADS)

    Charreton, Constant

    Heat exchangers and steam generators are crucial components in nuclear power plants. Water heated by nuclear fission is flowing through thousands of tubes inside a steam generator. Heat is transmitted to a second water network, external to the tubes. Steam is generated from the water of the secondary to power the turbines that produce electrical power. In this process, two-phase cross flow across the tubes causes several excitation phenomena. Vibration induced on the tubes can compromise the structural integrity of the steam generator, and can lead to power plant shutdowns. Better understanding of parameters at stake would lead to improved power plant safety and reliability. Fluidelastic instability is without doubt one of the most destructive vibration phenomena. It causes the steam generator tubes to collide against one another. This can lead to premature wear on the tubes, cracks due to fatigue and eventually, leaks leading to radioactive water contamination. Therefore, predicting conditions leading to fluidelastic instability would allow to control the damage on the tubes. In this thesis, we aim at identifying the key parameters to predict fluidelastic instability. To do so, a theoretical approach is based on the quasi-steady model. It is shown that the equation used to predict fluidelastic instability comprises two parameters that are hard to characterize. There is, on one hand, the derivative of the lift coefficient on a cylinder, and damping on the other hand. The main objective of this project is to measure these parameters experimentally. Knowing that the sign of the lift coefficient derivative is a sufficient indicator of fluidelastic instability, this derivative was measured. The experiments were carried out on the center tube of an array. The flow is single-phase and values of Reynolds number are low to moderate, thus filling a gap in the literature. Indeed, the lift coefficient derivative is known for high values of the Reynolds number only. Meanwhile

  6. Validation de schemas de calcul APOLLO3 pour assemblages de type RNR

    NASA Astrophysics Data System (ADS)

    Berche, Simon

    The next generation nuclear reactors are already under construction or under development in the R&D labs around the world. The 3rd and 4th generation nuclear reactors will need a neutronic calculation code able to deal with any kind of technology (FBR or PWR for example). APOLLO3, a new neutronic code developped by the Commissariat a l'Energie Atomique, will receive the heritage of his two predecessors, APOLLO2 (PWR) and ECCO/ERANOS (FBR), and to play a major role in the design of the next nuclear reactors. Validation is an essential step along the development of a deterministic neutronic code. It comes right after implementation and verification and it gives the team in charge of the calculation models in Cadarache the necessary feedbacks on the code's behaviour in various situations. This thesis goal is to suggest a validation (without evolution) of the current APOLLO3 reference calculation route used for FBR. This validation is supposed to be as complete as possible and to cover various configurations. This work will be a preparatory work for the complete validation which will be performed by the APOLLO3 project team in Cadarache. This validation is based on a study of various configurations composed of basic elements like pincells or assemblies. To complete this task, we study different aspects : geometry, sodium void effect, AEMC-RNR-1200 energy mesh, JEFF3.2 nuclear data evaluation for Pu239. We conduct a macroscopical study (multiplication factor, reactivity, neutron flux,...) and an isotopical study (fission and capture rates for Pu239 and U238 for example). We use TRIPOLI4, a Monte-Carlo simulation code, as a reference for all of our APOLLO3 calculations. We consider an infinite lattice (no neutron leakage model keff = kinfinity). This first validation phase led us to several conclusions. First of all, we observed that the geometrical configuration defined for the single pincell used in ASTRID predefinition studies is heterogeneous enough. Indeed, void

  7. Developpement d'une methode calorimetrique de mesure des pertes ac pour des rubans supraconducteurs a haute temperature critique

    NASA Astrophysics Data System (ADS)

    Dolez, Patricia

    Le travail de recherche effectue dans le cadre de ce projet de doctorat a permis la mise au point d'une methode de mesure des pertes ac destinee a l'etude des supraconducteurs a haute temperature critique. Pour le choix des principes de cette methode, nous nous sommes inspires de travaux anterieurs realises sur les supraconducteurs conventionnels, afin de proposer une alternative a la technique electrique, presentant lors du debut de cette these des problemes lies a la variation du resultat des mesures selon la position des contacts de tension sur la surface de l'echantillon, et de pouvoir mesurer les pertes ac dans des conditions simulant la realite des futures applications industrielles des rubans supraconducteurs: en particulier, cette methode utilise la technique calorimetrique, associee a une calibration simultanee et in situ. La validite de la methode a ete verifiee de maniere theorique et experimentale: d'une part, des mesures ont ete realisees sur des echantillons de Bi-2223 recouverts d'argent ou d'alliage d'argent-or et comparees avec les predictions theoriques donnees par Norris, nous indiquant la nature majoritairement hysteretique des pertes ac dans nos echantillons; d'autre part, une mesure electrique a ete realisee in situ dont les resultats correspondent parfaitement a ceux donnes par notre methode calorimetrique. Par ailleurs, nous avons compare la dependance en courant et en frequence des pertes ac d'un echantillon avant et apres qu'il ait ete endommage. Ces mesures semblent indiquer une relation entre la valeur du coefficient de la loi de puissance modelisant la dependance des pertes avec le courant, et les inhomogeneites longitudinales du courant critique induites par l'endommagement. De plus, la variation en frequence montre qu'au niveau des grosses fractures transverses creees par l'endommagement dans le coeur supraconducteur, le courant se partage localement de maniere a peu pres equivalente entre les quelques grains de matiere

  8. Project Risk Management

    NASA Technical Reports Server (NTRS)

    Jr., R. F. Miles

    1995-01-01

    Project risk management is primarily concerned with performance, reliability, cost, and schedule. Environmental risk management is primarily concerned with human health and ecological hazards and likelihoods. This paper discusses project risk management and compares it to environmental risk management, both with respect to goals and implementation. The approach of the Jet Propulsion Laboratory to risk management is presented as an example of a project risk management approach that is an extension to NASA NHB 7120.5: Management of Major System Programs and Projects.

  9. KSC History Project

    NASA Technical Reports Server (NTRS)

    Dethloff, Henry C.

    2001-01-01

    The KSC History Project focuses on archival research and oral history interviews on the history of Kennedy Space Center (KSC). Related projects include the preparation of a precis and chapter outline for a proposed book-length narrative history, a bibliography of key primary and secondary resources, a brief monograph overview of the history of KSC, and a monograph on the history of safety at the Center. Finally, there is work on the development of a web page and a personal history data base associated with the oral history project. The KSC History Project has been a joint endeavor between Henry C. Dethloff and Dr. Noble Lee Snaples, Jr.

  10. Other School Projects.

    ERIC Educational Resources Information Center

    Learning By Design, 2001

    2001-01-01

    Highlights selected construction projects for learning centers, early childhood and development schools, and special purpose educational facilities that have won the Learning By Design Awards for 2001.(GR)

  11. FLEXI Project Management Survey

    NASA Astrophysics Data System (ADS)

    Rohunen, Anna; Krzanik, Lech; Kuvaja, Pasi; Similä, Jouni; Rodriguez, Pilar; Hyysalo, Jarkko; Linna, Tommi

    FLEXI Project Management Survey (FLEXI PMS) has been established to gain detailed knowledge on how the software industry - in particular successful companies - manages agile software development. FLEXI PMS investigates the actual agile values, principles, practices and contexts. The survey is supported by a careful literature review and analysis of existing studies. Special attention is attached to large, multi-site, multi-company and distributed projects - the target area of FLEXI project. The survey is intended to provide solid data for further knowledge acquisition and project/company positioning with regard to feasible agile management practices.

  12. Project Worm Bin.

    ERIC Educational Resources Information Center

    McGuire, Daniel C.

    1987-01-01

    Describes a project centering around earthworm activity in a compost bin. Includes suggestions for exercises involving biological and conservation concepts, gardening skills, and dramatical presentations. (ML)

  13. Manpower and project planning

    NASA Technical Reports Server (NTRS)

    Johnson, David W.

    1991-01-01

    The purpose was to study how manpower and projects are planned at the Facilities Engineering Division (FENGD) within the Systems Engineering and Operations Directorate of the LaRC and to make recommendations for improving the effectiveness and productivity ot the tools that are used. The existing manpower and project planning processes (including the management plan for the FENGD, existing manpower planning reports, project reporting to LaRC and NASA Headquarters, employee time reporting, financial reporting, and coordination/tracking reports for procurement) were discussed with several people, and project planning software was evaluated.

  14. Quelle place pour l’anesthésie locorégionale chez les brûlés?

    PubMed Central

    Chaibdraa, A.; Medjelekh, M.S.; Saouli, A.; Bentakouk, M.C.

    2015-01-01

    Summary La pratique de l’anesthésie locorégionale chez les brûlés est limitée par de nombreux facteurs. Elle est considérée comme marginale dans l’approche multimodale du traitement de la douleur par excès de nociception. Ce travail rétrospectif, sur une période de 3 années, porte sur les anesthésies locorégionales (ALR) réalisées. Les résultats obtenus vont permettre, en regard de la rareté des données de la littérature, de formuler quelques suggestions sur la place de cette technique. Il a été recensé 634 ALR, dont 96% chez des adultes. Les membres inférieurs sont les plus concernés (76%). Des anesthésies rachidiennes ont été pratiquées chez 32 patients dont 4 enfants. Les incidents sont peu fréquents (3%) et sans gravité. L’ALR peut représenter une option utile dans la stratégie multimodale de prise en charge de la douleur, la réhabilitation passive précoce et la chirurgie de recouvrement par la greffe de peau. Elle mérite d’être explorée en ambulatoire, dans la mesure où 95% des brûlés ne sont pas hospitalisés. La place de l’anesthésie-locorégionale chez les brûlés devrait susciter plus d’intérêts, pour permettre d’établir des protocoles fondés sur une réflexion pluridisciplinaire. PMID:27279806

  15. Microscopie interférentielle X-UV : un outil pour l'étude des endommagements des surfaces optiques

    NASA Astrophysics Data System (ADS)

    Jamelot, G.; Ros, D.; Cassou, K.; Kazamias, S.; Klisnick, A.; Kozlová, M.; Mocek, T.; Homer, P.; Polan, J.; Stupka, M.

    2006-12-01

    Nous présentons des résultats récents concernant des premières investigations de microscopie interférentielle par laser X-UV d'endommagement optique. Le laser X-UV utilisé est un laser collisionnel en régime quasi-stationnaire émettant à 21.2 nm, développé au Prague Asterix Laser System (PALS, Prague, République Tchèque). Des échantillons de silice fondue de haute qualité, avec ou sans rayure, étaient irradiées en face avant par un laser bleu, correspondant au 3selectfontfontsize{7{9}{textrm{ème}}} harmonique du laser à iode du PALS (1.315 μ m), servant également à réaliser le laser X-UV à 21.2 nm. Celui-ci était utilisé, 5 ns après l'irradiation pour réaliser une imagerie microscopique et interférentielle de la face arrière de l'échantillon. Les résultats font apparaître des déformations locales transitoires. Des premières analyses mettent en évidence une probable variation de la rugosité de la surface. Cette démonstration expérimentale encourageante ouvre la voie à de futures investigations, notamment sur notre prochaine installation laser : LASERIX.

  16. Douleurs et conflits : Approche comparative et implications pour la qualité des soins en fin de vie

    PubMed Central

    Mpinga, Emmanuel Kabengele; Verloo, Henk; Rapin, Charles-Henri; Chastonay, Philippe

    2009-01-01

    Le conflit serait-il à l’organisation ce que la douleur est à un organisme ? OBJECTIFS: Explorer les similitudes et les differences entre les douleurs et les conflits dans les contextes de soins de fin de vie. Mieux comprendre le rôle des conflits dans la qualité de ces soins. MÉTHODOLOGIE: Méthode comparative et réflexive autour des politiques de prise en charge des douleurs et des conflits dans les systèmes de soins. RÉSULTATS: Les conflits et les douleurs présentent de nombreuses similitudes de par leur identité, leur typologie, leur prévalence, leur fonction d’alerte, leurs coûts économiques et sociaux, le déni ou l’occultation qui les entourent et les obstacles à leur prise en charge adéquate. À l’inverse, des différences apparaissent dans la prise en charge des douleurs comparée à celle des conflits. Ces différences portent sur l’existence des programmes de prévention et de lutte sur les scènes nationale et internationale, la mise en œuvre des activités de recherche et de formation et la visibilité sociale. Pour les conflits, cette mise en œuvre n’existe pas encore. CONCLUSION: Les décideurs en clinique et en santé publique devraient intégrer les conflits comme un indicateur de la qualité des soins et élaborer des politiques pertinentes en matière de santé. PMID:19714268

  17. The Wedding Project: Introducing the Project Approach

    ERIC Educational Resources Information Center

    Sorrels, Barbara; Norris, Deborah; Sheeran, Linda

    2004-01-01

    Constructivist education, based on the theories of Piaget and Vygotsky, advocates an approach to curriculum and teaching that is student centered, inquiry based, integrated and intellectually engaging. One teaching strategy that provides such an experience is the Project Approach, reflective of the pedagogy of John Dewey and introduced as a model…

  18. Basalt Waste Isolation Project Reclamation Support Project:

    SciTech Connect

    Brandt, C.A.; Rickard, W.H. Jr.; Cadoret, N.A.

    1992-06-01

    The Basalt Waste Isolation Project (BWIP) Reclamation Support Project began in the spring of 1988 by categorizing sites distributed during operations of the BWIP into those requiring revegetation and those to be abandoned or transferred to other programs. The Pacific Northwest Laboratory's role in this project was to develop plans for reestablishing native vegetation on the first category of sites, to monitor the implementation of these plans, to evaluate the effectiveness of these efforts, and to identify remediation methods where necessary. The Reclamation Support Project focused on three major areas: geologic hydrologic boreholes, the Exploratory Shaft Facility (ESF), and the Near-Surface Test Facility (NSTF). A number of BWIP reclamation sites seeded between 1989 and 1990 were found to be far below reclamation objectives. These sites were remediated in 1991 using various seedbed treatments designed to rectify problems with water-holding capacity, herbicide activity, surficial crust formation, and nutrient imbalances. Remediation was conducted during November and early December 1991. Sites were examined on a monthly basis thereafter to evaluate plant growth responses to these treatments. At all remediation sites early plant growth responses to these treatments. At all remediation sites, early plant growth far exceeded any previously obtained using other methods and seedbed treatments. Seeded plants did best where amendments consisted of soil-plus-compost or fertilizer-only. Vegetation growth on Gable Mountain was less than that found on other areas nearby, but this difference is attributed primarily to the site's altitude and north-facing orientation.

  19. River Protection Project (RPP) Project Management Plan

    SciTech Connect

    NAVARRO, J.E.

    2001-03-07

    The Office of River Protection (ORP) Project Management Plan (PMP) for the River Protection Project (RPP) describes the process for developing and operating a Waste Treatment Complex (WTC) to clean up Hanford Site tank waste. The Plan describes the scope of the project, the institutional setting within which the project must be completed, and the management processes and structure planned for implementation. The Plan is written from the perspective of the ORP as the taxpayers' representative. The Hanford Site, in southeastern Washington State, has one of the largest concentrations of radioactive waste in the world, as a result of producing plutonium for national defense for more than 40 years. Approximately 53 million gallons of waste stored in 177 aging underground tanks represent major environmental, social, and political challenges for the U.S. Department of Energy (DOE). These challenges require numerous interfaces with state and federal environmental officials, Tribal Nations, stakeholders, Congress, and the US Department of Energy-Headquarters (DOE-HQ). The cleanup of the Site's tank waste is a national issue with the potential for environmental and economic impacts to the region and the nation.

  20. Project New Pride: Replication.

    ERIC Educational Resources Information Center

    National Inst. for Juvenile Justice and Delinquency Prevention (Dept. of Justice/LEAA), Washington, DC.

    The Office of Juvenile Justice and Delinquency Prevention, Law Enforcement Assistance Administration, is establishing a new discretionary grant program entitled Replication of Project New Pride: A Serious Offender Youth Treatment Program. Project New Pride was chosen for replication because of its demonstrated effectiveness in Denver, Colorado,…

  1. Winnipeg Centre Project.

    ERIC Educational Resources Information Center

    Manitoba Dept. of Education, Winnipeg.

    The Winnipeg Centre Project is a field-based, work-study program that attempts to create more appropriate education for the inner-city child. Sponsored by the Planning and Research Branch of the Department of Colleges and Universities Affairs and administered by Brandon University in consultation with the Winnipeg School Division, the project is…

  2. BI Project Success

    ERIC Educational Resources Information Center

    Tracey, Graham; Riha, James

    2009-01-01

    Managing business intelligence (BI) projects in higher education is a formidable responsibility that challenges even the most experienced technical project managers. Data source dependencies, uncertain data quality, changing information requirements, and urgency for actionable information are but a few examples among the multitude of challenges.…

  3. The HALI Project

    ERIC Educational Resources Information Center

    Thompson, Brad

    2011-01-01

    This article features The HALI Project and shares experiences that led to the first part of the project--Empowered Parents. This program taught parents how to first come to grips with the reality of their situation, then dream new, appropriate dreams for their children. From there it addressed understanding the ongoing emotional journey and how it…

  4. Interactive Genetics Tutorial Project.

    ERIC Educational Resources Information Center

    Wisconsin Univ., Madison. Dept. of Curriculum and Instruction.

    The Interactive Genetics Tutorial (IGT) project and the Intelligent Tutoring System for the IGT project named MENDEL supplement genetics instruction in biology courses by providing students with experience in designing, conducting, and evaluating genetics experiments. The MENDEL software is designed to: (1) simulate genetics experiments that…

  5. Proficiency Sample Project.

    ERIC Educational Resources Information Center

    Apodaca, Mary

    The instrument for Colorado's Foreign Language Proficiency Sample Project and directions for its administration are provided in this document. The project is a voluntary, teacher-designed and -administered effort to standardize high school student language proficiency assessment techniques. The materials are used in teacher workshops. The…

  6. The Mars Millennium Project.

    ERIC Educational Resources Information Center

    National Aeronautics and Space Administration, Washington, DC.

    The countdown to a new century provides a unique opportunity to engage America's youth in charting a course for the future. The Mars Millennium Project challenges students across the nation to design a community yet to be imagined for the planet Mars. This interdisciplinary learning project aims to encourage K-12 students in classrooms and youth…

  7. Spray combustion stability project

    NASA Technical Reports Server (NTRS)

    Jeng, San-Mou; Litchford, Ron J.

    1992-01-01

    This report summarizes research activity on the Spray Combustion Stability Project, characterizes accomplishments and current status, and discusses projected future work. The purpose is to provide a concise conceptual overview of the research effort to date so the reader can quickly assimilate the gist of the research results and place them within the context of their potential impact on liquid rocket engine design technology.

  8. Milford Visual Communications Project.

    ERIC Educational Resources Information Center

    Milford Exempted Village Schools, OH.

    This study discusses a visual communications project designed to develop activities to promote visual literacy at the elementary and secondary school levels. The project has four phases: (1) perception of basic forms in the environment, what these forms represent, and how they inter-relate; (2) discovery and communication of more complex…

  9. The TULIP Project.

    ERIC Educational Resources Information Center

    Gusack, Nancy, Ed.; And Others

    1995-01-01

    Contains 11 articles that describe different university access systems designed and built to provide access to journals via The University Licensing Program (TULIP), a science journal access project, involving Elsevier Science Publishing and major universities. The project produced insights to help with future electronic information delivery…

  10. The Nordwrite Project.

    ERIC Educational Resources Information Center

    Evensen, Lars, Sigfred

    A planned 3-year joint project of the Nordic research council for the humanities that focuses on writing development in school-age children is described. Four Nordic countries are involved in the project: Finland, Sweden, Norway, and Denmark. In the study, discourse-level performance analyses of student writing in English as a Second Language are…

  11. Educational Project with MIND.

    ERIC Educational Resources Information Center

    Ruddock, Helen; Worrall, Paul

    A project in creative writing and literacy was developed and implemented for people experiencing mental health difficulties. The project was a jointly organized activity between Dearne Valley College and Doncaster MIND in England. (MIND is a network of mental health associations in England and Wales.) The college counselor acted as the supervisor…

  12. Understanding Population Projections.

    ERIC Educational Resources Information Center

    Haub, Carl

    1987-01-01

    Population projections are "what if" computational exercises. Given selected assumptions about future trends in fertility, mortality, and migration, population trends can be projected. Government and business planners need this information, and they also require enough time to put facilities in place to meet future needs. Everyone benefits from a…

  13. Winter Art Education Project

    ERIC Educational Resources Information Center

    Jokela, Timo

    2007-01-01

    The purpose of this article is to describe how the Department of Art Education at the University of Lapland in Finland has developed winter art as a method of environmental and community-based art education. I will focus on the Snow Show Winter Art Education Project, a training project funded by the European Union and the State Provincial Office…

  14. A Holiday Project.

    ERIC Educational Resources Information Center

    Kofod, Maudrey Taranto

    1996-01-01

    Describes a classroom project involving the construction of a holiday mobile. Necessary supplies include a lightweight hanger, construction paper, string, scissors, protractors, compasses, and rulers. Concepts involved in the construction of the project include illustrating a chord, radius, diameter, shapes, metric measuring, circumference, area,…

  15. Distortion in Perspective Projection

    ERIC Educational Resources Information Center

    Kelso, Robert P., Sr.

    2008-01-01

    The paper presents a unique approach in associating perspective projection with the image beheld by the eye and demonstrates that all graphical and photographic perspective projections must contain distortion when compared to the image beheld by the eye. (Contains 8 figures.)

  16. The Plate Tectonics Project

    ERIC Educational Resources Information Center

    Hein, Annamae J.

    2011-01-01

    The Plate Tectonics Project is a multiday, inquiry-based unit that facilitates students as self-motivated learners. Reliable Web sites are offered to assist with lessons, and a summative rubric is used to facilitate the holistic nature of the project. After each topic (parts of the Earth, continental drift, etc.) is covered, the students will…

  17. The Home Microbiome Project

    ScienceCinema

    Gilbert, Jack

    2016-07-12

    The Home Microbiome Project is an initiative aimed at uncovering the dynamic co-associations between people's bacteria and the bacteria found in their homes.The hope is that the data and project will show that routine monitoring of the microbial diversity of your body and of the environment in which you live is possible.

  18. SDM Virtualness Project

    NASA Technical Reports Server (NTRS)

    Lim, Christopher Yit-Seong; Klein, Janice

    2004-01-01

    In the summer of 2001, NASA and Ford Motor Company co-sponsored a research project aimed at improving the education process and application of lessons learned through distant education. The System Design & Management Program (SDM) was used as a laboratory for improving distance learning capabilities. The research project was a follow up to previous research on globally dispersed teams.

  19. The Physics Plus Project.

    ERIC Educational Resources Information Center

    McKim, F. R.

    1983-01-01

    The Physics Plus Project is producing a series of pamphlets designed to supplement existing curricula with physics application topics (such as physics of sports, motor cars, weather, medical physics, energy). Discusses rationale for the projects, pamphlet production, distribution to schools, and use of pamphlet material on examinations. (JM)

  20. Project Planning and Reporting

    NASA Technical Reports Server (NTRS)

    1982-01-01

    Project Planning Analysis and Reporting System (PPARS) is automated aid in monitoring and scheduling of activities within project. PPARS system consists of PPARS Batch Program, five preprocessor programs, and two post-processor programs. PPARS Batch program is full CPM (Critical Path Method) scheduling program with resource capabilities. Can process networks with up to 10,000 activities.

  1. Project Information Packages: Overview.

    ERIC Educational Resources Information Center

    RMC Research Corp., Mountain View, CA.

    This brochure describes a new series of Project Information Packages, a U.S. Office of Education response to the need for a systematic approach to disseminating exemplary projects. The packages describe procedures for developing the necessary administrative support and management framework, as well as instructional methods and techniques. The six…

  2. The Comic Book Project

    ERIC Educational Resources Information Center

    Bitz, Michael

    2008-01-01

    The Comic Book Project (CBP) celebrates its eighth anniversary this year. The project, which just originated with one school in New York City, had grown to encompass thousands of students nationwide. The goal of the CBP is not to create comics the "Marvel way" or to develop the next Stan Lee. Rather, the goal is to give students the opportunity to…

  3. Conservation Science Fair Projects.

    ERIC Educational Resources Information Center

    Soil Conservation Society of America, Ankeny, IA.

    Included are ideas, suggestions, and examples for selecting and designing conservation science projects. Over 70 possible conservation subject areas are presented with suggested projects. References are cited with each of these subject areas, and a separate list of annotated references is included. The references pertain to general subject…

  4. Beacon College Project Directory.

    ERIC Educational Resources Information Center

    Barnett, Lynn, Ed.

    The American Association of Community Colleges' Beacon College Project (BCP) uses funds from the Kellogg Foundation to award two-year grants to "Beacon" community colleges to form consortia with at least five associate colleges, designed to improve a specific aspect of institutional life. A total of 26 projects, many involving community…

  5. Project BEST Final Report.

    ERIC Educational Resources Information Center

    Pankratz, David; Friedenberg, Joan

    Project BEST (Building Energy Systems Technology), a bilingual vocational training program, operated at Oakton Community College between March 1986 and September 1987. The purpose of the project was to provide 60 limited English proficient (LEP) Hispanic and Polish adults with sufficient vocational skills, English language skills, and appropriate…

  6. Projecting Personnel Needs.

    ERIC Educational Resources Information Center

    Kelly, Philip T.

    Increased reliance on personnel services is placing school districts' business operations in a no-win situation. This report evaluates methods of student population projection in relation to teacher costs. Educational costs reflect personnel costs in light of a decrease in the number of pupils being served. Increased enrollment projections create…

  7. The ANTARES Project

    NASA Astrophysics Data System (ADS)

    Amram, Ph.; Anvar, S.; Aslanides, E.; Aubert, J. J.; Azoulay, R.; Basa, S.; Benhammou, Y.; Bernard, F.; Berthier, R.; Bertin, V.; Billault, M.; Biller, S.; Blanc, F.; Blanc, P. E.; Bland, R. W.; Blondeau, F.; de Botton, N.; Bottu, N.; Boulesteix, J.; Brooks, B.; Brunner, J.; Calzas, A.; Carloganu, C.; Carr, J.; Carton, P. H.; Cartwright, S.; Cases, R.; Cassol, F.; Charles, F.; Charles, J.; Desages, F.; Destelle, J. J.; Dispau, G.; Duval, P. Y.; Engelen, J.; Feinstein, F.; Flores, E. C.; Fopma, J.; Fuda, J. L.; Goret, P.; Gosset, L.; Gournay, J. F.; Hernandez, J. J.; Hubaut, F.; Hubbard, R.; Huss, D.; Jaquet, M.; Jelley, N.; Kajfasz, E.; Kouchner, A.; Kudryavtsev, V.; Lachartre, D.; Lafoux, H.; Lamare, P.; Languillat, J. C.; Laugier, J. P.; Le Provost, H.; Loiseau, D.; Loucatos, S.; Magnier, P.; Marc, K.; Marcelin, M.; Martin, L.; Mazeau, B.; Mazure, A.; McMillan, J.; Meessen, C.; Millot, C.; Mols, P.; Montanet, F.; Moorhead, M.; Moscoso, L.; Navas, S.; Nooren, Van; Olivetto, C.; Palanque-Delabrouille, N.; Pallares, A.; Payre, P.; Perrin, P.; Poinsignon, J.; Potheau, R.; Qian, Z.; Raymond, M.; Roberts, J.; Sacquin, Y.; Schuller, J. P.; Schuster, W.; Spooner, N.; Stolarczyk, T.; Tabary, A.; Talby, M.; Tao, C.; Thompson, L.; Triay, R.; Valdy, M.; Velasco, J.; Vigeolas, E.; Vignaud, D.; Vilanova, D.; Wark, D.; Zuniga, J.

    1999-03-01

    The ANTARES project is an international collaboration with the aim of building a deep-sea large area neutrino telescope within the next decade. The achievements and status of the project as at the time of the conference are briefly discussed, and short term steps as well as longer term plans are described.

  8. The Home Microbiome Project

    SciTech Connect

    Gilbert, Jack

    2014-08-25

    The Home Microbiome Project is an initiative aimed at uncovering the dynamic co-associations between people's bacteria and the bacteria found in their homes.The hope is that the data and project will show that routine monitoring of the microbial diversity of your body and of the environment in which you live is possible.

  9. Plant Biology Science Projects.

    ERIC Educational Resources Information Center

    Hershey, David R.

    This book contains science projects about seed plants that deal with plant physiology, plant ecology, and plant agriculture. Each of the projects includes a step-by-step experiment followed by suggestions for further investigations. Chapters include: (1) "Bean Seed Imbibition"; (2) "Germination Percentages of Different Types of Seeds"; (3)…

  10. The Okapi Projects.

    ERIC Educational Resources Information Center

    Keen, Michael

    1997-01-01

    Examines general issues in conducting information retrieval research. Topics include the Okapi information retrieval system and its probabilistic model; the Cranfield projects, concerning recall and precision; the SMART project with its vector-space model; evaluation methodology, including laboratory evaluation of interactive systems; and…

  11. Small Projects First

    ERIC Educational Resources Information Center

    Shang-Kuei, Chen

    1975-01-01

    For thousands of years China has been troubled by droughts and floods. In the past 25 years, the country has worked to alleviate these problems. Numerous water conservation projects requiring the communal efforts of the people have been carried out. Record grain crops have resulted from these projects. (MA)

  12. The Moon Project

    ERIC Educational Resources Information Center

    Trundle, Kathy Cabe; Willmore, Sandra; Smith, Walter S.

    2006-01-01

    What Australia, Alaska, Qatar, Indiana, and Ohio have in common is the authentic writing More Observations Of Nature (MOON) project. In this unique project, teachers from these disparate geographic locations teamed up to instruct children in grades four through eight via the internet on a nearly universally challenging subject for teachers in the…

  13. The Billboard Project

    ERIC Educational Resources Information Center

    Weaver, Victoria

    2005-01-01

    Since 1997, the author coordinated a large-scale billboard project. Coordinated to coincide with the National Art Education Association's celebration of Youth Art Month, strong commitments from faculty, students, administrators, public-relations liaisons, local press, radio, TV, and community businesses have made this project a success. The first…

  14. Mathematics Projects Handbook.

    ERIC Educational Resources Information Center

    Hess, Adrien L.

    This handbook is designed as a guide for teachers and students in choosing and developing mathematics projects, from simple demonstrations of mathematical problems or principles that the teacher has assigned as classroom learning experiences to complex, sophisticated exhibits, intended for entrance in fairs and competitions. The use of projects to…

  15. Fundred Dollar Bill Project

    ERIC Educational Resources Information Center

    Rubin, Mary

    2009-01-01

    This article describes the Fundred Dollar Bill Project which is an innovative artwork made of millions of drawings. This creative collective action is intended to support Operation Paydirt, an extraordinary art/science project uniting three million children with educators, scientists, healthcare professionals, designers, urban planners, engineers,…

  16. Schoolyard Habitat Project Guide.

    ERIC Educational Resources Information Center

    Mason, Rich

    This project aims to provide basic steps for students to restore and create wildlife habitats on school grounds. Four chapters are included in this guide, and each chapter is divided into teacher and student sections. Chapter 1 provides necessary information for starting a habitat project. Chapters 2, 3, and 4 discuss the details for the Forest…

  17. The CLASS Project.

    ERIC Educational Resources Information Center

    National Wildlife Federation, Washington, DC.

    The CLASS project is a series of investigations and projects designed by the National Wildlife Federation as supplementary materials for existing junior high school environmental curricula. This notebook contains nine different sections: an introduction, six content areas, a series of case studies, and a resource bibliography. The six content…

  18. Bioenergy/Biotechnology projects

    SciTech Connect

    Napper, Stan; Palmer, James; Wilson, Chester; Guilbeau, Eric; Allouche, Erez

    2012-06-30

    This report describes the progress of five different projects. The first is an enzyme immobilization study of cellulase to reduce costs of the cellulosic ethanol process. High reusability and use of substrates applicable to large scale production were focus areas for this study. The second project was the development of nanostructured catalysts for conversion of syngas to diesel. Cobalt nanowire catalyst was used in Fischer-Tropsch synthesis. The third project describes work on developing a microfluidic calorimeter to measure reaction rates of enzymes. The fourth project uses inorganic polymer binders that have the advantage of a lower carbon footprint than Portland cement while also providing excellent performance in elevated temperature, high corrosion resistance, high compressive and tensile strengths, and rapid strength gains. The fifth project investigates the potential of turbines in drop structures (such as sewer lines in tall buildings) to recover energy.

  19. North American LNG Project Sourcebook

    SciTech Connect

    2007-06-15

    The report provides a status of the development of LNG Import Terminal projects in North America, and includes 1-2 page profiles of 63 LNG projects in North America which are either in operation, under construction, or under development. For each project, the sourcebook provides information on the following elements: project description, project ownership, project status, projected operation date, storage capacity, sendout capacity, and pipeline interconnection.

  20. Diffusion des rayonnements X et visibles ; microscopie en champ proche : utilisation comparée pour la caractérisation des surfaces

    NASA Astrophysics Data System (ADS)

    Tollens, E.; Menecier, S.; Haidar, Y.; Zerrouki, C.; Chassevent, M.; de Fornel, F.; Bonnet, J. J.

    2004-11-01

    Trois méthodes ont été utilisées pour caractériser la rugosité de quelques échantillons. Deux de ces méthodes sont basées sur la mesure du rayonnement diffusé (visible et X). La troisième utilise la microscopie en champ proche (MCP). Dans un premier temps, une comparaison des deux premières techniques a été menée en utilisant une même théorie vectorielle de la diffusion. Bien adaptée au domaine du visible, cette théorie peut aussi être utilisée dans le cas du rayonnement X. Les densités spectrales de puissance (dsp) de la rugosité, déterminées expérimentalement pour deux échantillons d'Alacrite XSH (alliage quaternaire à base de cobalt utilisé en métrologie des masses), montrent des allures identiques dans le cas du visible et du rayonnement X à des incidences très rasantes. Dans un deuxième temps, la hauteur quadratique moyenne δ , caractéristique de la rugosité de ces deux échantillons, a été déterminée de façon "directe" par microscopie en champ proche, et à partir des dsp pour les deux autres techniques. La restriction à une bande commune des fréquences spatiales accessibles à ces techniques, conduit à des valeurs de δ comparables aux incertitudes près. Une validation des mesures X ainsi faite, un accent est mis sur leur apport complémentaire par rapport au visible.

  1. A fenbendazole oral drench in addition to an ivermectin pour-on reduces parasite burden and improves feedlot and carcass performance of finishing heifers compared with endectocides alone.

    PubMed

    Reinhardt, C D; Hutcheson, J P; Nichols, W T

    2006-08-01

    Two studies utilizing 1,862 yearling heifers were conducted to determine the effects of a fenbendazole oral drench in addition to an ivermectin pour-on (SG+IVPO), compared with an ivermectin pour-on (IVPO) or a doramectin injectable (DMX) alone, on parasite burden, feedlot performance, and carcass merit of feedlot cattle. In the first study, heifers receiving the SG+IVPO had fewer (P = 0.02) cattle retreated for disease and 73% fewer (P = 0.06) worm eggs per fecal sample 98 d after treatment than heifers treated with IVPO. Heifers treated with SG+IVPO consumed more DM, had greater ADG, were heavier at slaughter, and had heavier carcasses than IVPO-treated heifers (P < 0.05). Heifers treated with SG+IVPO also had more (P = 0.07) carcasses grading USDA Prime or Choice than IVPO-treated heifers. In the second study, heifers treated with SG+IVPO had fewer (P < 0.01) worm eggs per fecal sample 35 d after treatment and had fewer numbers of adult and larval Cooperia and Trichostrongylus spp. in the small intestine at slaughter (P < 0.10) compared with heifers treated with DMX. Heifers treated with SG+IVPO consumed more DM, were heavier at slaughter, and had heavier carcasses than DMX-treated heifers (P < 0.01). The SG+IVPO-treated heifers also had greater ADG (P < 0.10). The broad-spectrum effectiveness of a combination of a fenbendazole oral drench and an ivermectin pour-on reduced parasite burden and increased feed intake, ADG, and carcass weight in feedlot heifers compared with treatment with an endectocide alone.

  2. Summary Report For The Analysis Of The Sludge Batch 7b (Macrobatch 9) DWPF Pour Stream Glass Sample For Canister S04023

    SciTech Connect

    Johnson, F. C.

    2013-11-18

    In order to comply with the Defense Waste Processing Facility (DWPF) Waste Form Compliance Plan for Sluldge Batch 7b, Savannah River National Laboratory (SRNL) personnel characterized the Defense Waste Processing Facility (DWPF) pour stream (PS) glass sample collected while filling canister S04023. This report summarizes the results of the compositional analysis for reportable oxides and radionuclides and the normalized Product Consistency Test (PCT) results. The PCT responses indicate that the DWPF produced glass that is significantly more durable than the Environmental Assessment glass.

  3. Conception et calibration d'un sonoreacteur pour l'oxydation de la cellulose par le systeme TEMPO/NaOCl/NaBr

    NASA Astrophysics Data System (ADS)

    Paquin, Michel

    Avec le contexte economique actuel dans le domaine des pates et papiers au Canada, l'industrie se doit de diversifier ses produits mis en marche. La fermeture de plus de 20 usines depuis 2005, une baisse du PIB de l'industrie de 1,4 milliard CAD entre 1999--2008, une baisse de la demande de 2,4 %, une diminution du prix de la pate de 20,9 % depuis juillet 2009. La delocalisation du secteur vers l'Asie et l'hemisphere sud sont autant de raisons pour laquelle l'industrie se doit d'etre a l'avant plan de nouvelle technologie a base de fibre de bois. Pour augmenter leur rentabilite, l'industrie se doit de diversifier ses produits dans d'autres secteurs que le simple fabricant de papier impression-ecriture. Sa diversification passe par l'elaboration de nouveaux papiers a valeur ajoutee (papier conducteur, papier bioactif, etc.), par l'utilisation de la biomasse forestiere pour la production d'energie, par l'utilisation de la biomasse forestiere pour l'elaboration d'une plateforme de chimie verte, par l'utilisation de la lignine pour le developpement de polymeres et par l'utilisation de la fibre cellulosique pour la fabrication de nanomateriaux. La fabrication de nanofibrille de cellulose peut devenir un des produits qui servira a diversifier la production des usines de pates et papiers. Les nanofibrilles de cellulose possedent des proprietes mecaniques et chimiques exceptionnelles. Les nanofibrilles de cellulose sont fabriquees a partir d'une oxydation selective de la pate kraft de feuillu avec le systeme TEMPO-NaOCl-NaBr. L'oxydation selective de l'alcool primaire en C6 du monomere de glucose sous forme de carboxylates engendre une modification chimique de la cellulose qui accroit l'hydrophilicite des fibrilles. Suite a cette oxydation, nous devons effectuer une desintegration mecanique de la fibre kraft de feuillu oxydee pour separer les fibrilles. Le processus d'oxydation de la fibre par le systeme TEMPO-NaOCl-NaBr et sa defibrillation par la suite engendre une

  4. System Identification for Integrated Aircraft Development and Flight Testing (l’Identification des systemes pour le developpement integre des aeronefs et les essais en vol)

    DTIC Science & Technology

    1999-03-01

    essais environ. Un outil d’optimisation param6trique IDLATNL a donc 6t6 naturellement d~velopp6 pour aider 5. IDLATNL Fing~nieur A r~soudre ce probl~me...support h de nombreux essais en vol sous contrat des Services Officiel Franqais (SPA6). 3. CAPTEURS Ce dispositif experimental a W utilis6 dans le...proviennent d’une travaillant dans le domaine fr~quentiel, fournit une centrale h inertic et de capteurs sp~cifiques cellule en cc qui estimation des

  5. BWRSAR (Boiling Water Reactor Severe Accident Response) calculations of reactor vessel debris pours for Peach Bottom short-term station blackout

    SciTech Connect

    Hodge, S.A.; Ott, L.J.

    1988-01-01

    This paper describes recent analyses performed by the BWR Severe Accident Technology (BWRSAT) Program at Oak Ridge National Laboratory to estimate the release of debris from the reactor vessel for the unmitigated short-term station blackout accident sequence. Calculations were performed with the BWR Severe Accident Response (BWRSAR) code and are based upon consideration of the Peach Bottom Atomic Power Station. The modeling strategies employed within BWRSAR for debris relocation within the reactor vessel are briefly discussed and the calculated events of the accident sequence, including details of the calculated debris pours, are presented. 4 refs., 13 figs., 3 tabs.

  6. L’administration postnatale de corticoïdes pour traiter ou prévenir la maladie pulmonaire chronique chez les prématurés

    PubMed Central

    Jefferies, Ann L

    2012-01-01

    RÉSUMÉ Les corticoïdes sont administrés pendant la période postnatale pour prévenir et traiter la maladie pulmonaire chronique néonatale (MPC) (qu’on appelle aussi dysplasie bronchopulmonaire), une cause importante de mortalité et de morbidité chez les nourrissons prématurés. Puisque l’administration de dexaméthasone ou d’hydrocortisone pendant les sept premiers jours de vie s’associe à un plus grand risque d’infirmité motrice cérébrale, il n’est pas recommandé d’amorcer rapidement une corticothérapie pour prévenir la MPC pendant la période postnatale. Après sept jours de vie, il a été établi que la dexaméthasone réduit le taux de MPC à 36 semaines d’âge postmenstruel et a moins de répercussions sur les issues neurodéveloppementales. Aucun essai n’a évalué si les bienfaits des corticoïdes sont supérieurs à leurs effets indésirables chez les nourrissons à haut risque de MPC ou atteints d’une grave MPC. Il n’est pas recommandé d’administrer systématiquement de la dexaméthasone à tous les enfants sous respirateur, mais les cliniciens peuvent envisager un court traitement à l’aide de faibles doses de dexaméthasone à des nourrissons sélectionnés à haut risque de MPC ou atteints d’une grave MPC. Aucune donnée probante n’indique que l’hydrocortisone est une solution efficace ou sécuritaire pour remplacer la dexaméthasone, et peu de données probantes appuient l’utilisation systématique de corticoïdes en aérosol dans le cadre de la prévention ou du traitement. On peut envisager la corticothérapie en aérosol pour remplacer la dexaméthasone dans le traitement de nourrissons sélectionnés atteints d’une grave MPC. La présente révision remplace le document de principes publié conjointement avec l’American Academy of Pediatrics en 2002.

  7. Éthique de la recherche en santé mondiale : la relation Nord-Sud, quel partenariat pour quelle justice sociale ?

    PubMed

    Godard, Béatrice; Hunt, Matthew; Moube, Zéphirin

    2014-06-01

    La recherche en santé mondiale s'inscrit dans une volonté de mobiliser des connaissances au service d'interventions et de politiques publiques pour l'atteinte équitable du bien-être commun, notamment en matière de santé. Elle joue un rôle primordial en ce sens, en favorisant l'implication des communautés et leur autonomisation et de nombreuses lignes directrices supportent un tel partenariat. Néanmoins, certains enjeux éthiques sont liés au financement de la recherche, aux environnements de recherche, à la priorisation des problématiques de recherche, aux mécanismes d'évaluation éthique posent souvent un problème de justice sociale au niveau de la redistribution des ressources et de la reconnaissance des différences culturelles. Comment alors déterminer quelle est la façon « idéale » d'agir en tenant compte de la globalité des individus et du pluralisme culturel des sociétés pour « bien faire », pour satisfaire l'exigence de l'équité? Une réflexion et une démarche éthique demeurent essentielles, ainsi qu'un dialogue entre les chercheurs du Nord et du Sud, et leurs autres partenaires que sont les décideurs, les responsables locaux et les communautés. Un tel dialogue, établi dans un continuum du développement de projets de recherche à leur pérennité, peut grandement contribuer à limiter les problèmes de justice sociale et à viser un développement plus égalitaire des savoirs scientifiques. Plusieurs chercheurs se sont déjà engagés dans cette voie, et leurs initiatives devraient être encouragées pour mettre les nouveaux savoirs au service des populations.

  8. Energy Efficiency Project Development

    SciTech Connect

    IUEP

    2004-03-01

    The International Utility Efficiency Partnerships, Inc. (IUEP) has been a leader among the industry groups that have supported voluntary initiatives to promote international energy efficiency projects and address global climate change. The IUEP maintains its leadership by both supporting international greenhouse gas (GHG) reduction projects under the auspices of the U.S. Department of Energy (DOE) and by partnering with U.S. and international organizations to develop and implement strategies and specific energy efficiency projects. The goals of the IUEP program are to (1) provide a way for U.S. industry to maintain a leadership role in international energy efficiency infrastructure projects; (2) identify international energy project development opportunities to continue its leadership in supporting voluntary market-based mechanisms to reduce GHG emissions; and (3) demonstrate private sector commitment to voluntary approaches to global climate issues. The IUEP is dedicated to identifying, promoting, managing, and assisting in the registration of international energy efficiency projects that result in demonstrated voluntary reductions of GHG emissions. This Final Technical Report summarizes the IUEP's work in identifying, promoting, managing, and assisting in development of these projects and IUEP's effort in creating international cooperative partnerships to support project development activities that develop and deploy technologies that (1) increase efficiency in the production, delivery and use of energy; (2) increase the use of cleaner, low-carbon fuels in processing products; and (3) capture/sequester carbon gases from energy systems. Through international cooperative efforts, the IUEP intends to strengthen partnerships for energy technology innovation and demonstration projects capable of providing cleaner energy in a cost-effective manner. As detailed in this report, the IUEP met program objectives and goals during the reporting period January 1, 2001 through

  9. Prise de suppléments multivitaminiques pour la prévention primaire des anomalies congénitalies

    PubMed Central

    Morin, Pascale; Demers, Karine; Giguère, Christine; Tribble, Denise St-Cyr; Lane, Julie

    2007-01-01

    RÉSUMÉ OBJECTIF Déterminer si les recommandations véhiculées par les professionnels de la santé sur l’importance de l’acide folique encouragent les femmes susceptibles de procréer de prendre les suppléments d’acide folique. CONCEPTION Enquête. CONTEXTE Centre de santé et de services sociaux, Institut universitaire de gériatrie de Sherbrooke, à Sherbrooke, Qué. PARTICIPANTS 323 femmes francophones âgées entre 18 et 45 ans. PRINCIPALES MESURES DES RÉSULTATS La consommation de suppléments de vitamines et de minéraux au cours de la dernière année. Des analyses statistiques descriptives et bivariées et une modélisation par régression logistique ont été effectuées pour déterminer si l’association observée entre la recommandation d’un professionnel de la santé et la consommation de vitamines et de minéraux persistait après avoir tenu compte de l’effet des variables de contrôle (consultation de documentation, connaissances, sources d’information, perception, âge, scolarité, revenu, état matrimonial, intention de devenir enceinte). RÉSULTATS Environ 41% des femmes rapportent que leur médecin leur avait recommandé de consommer un supplément de vitamines et de minéraux. Après avoir ajusté toutes les variables dans le modèle, il est apparu que le fait de se faire recommander par un professionnel de la santé de prendre un supplément de vitamines et de minéraux était significativement associé à la consommation de vitamines et de minéraux par les femmes susceptibles de devenir enceintes. CONCLUSION Les professionnels peuvent améliorer la santé de la population par une pratique clinique préventive. Nous soulignons l’importance de soutenir ces derniers dans leurs efforts d’intégrer puis d’appliquer des connaissances scientifiques dans leur pratique. PMID:18077754

  10. Project Management for International Development.

    ERIC Educational Resources Information Center

    Axelrod, Valija M.; Magisos, Joel H.

    A project developed a content model for international project management training. It also compiled a bibliography of project management references, identified specific project management training needs based upon a survey of international sponsors and contractor personnel, and documented the training needs of international project managers. Data…

  11. Project EXCEL with Hispanic Children.

    ERIC Educational Resources Information Center

    Pappas, Georgia; Orum, Lori

    1993-01-01

    Describes Project EXCEL (Excellence in Community Educational Leadership), educational project addressing educational needs of Hispanic community. Identifies six models of Project EXCEL (Academia del Pueblo, Project Success, Project Second Chance, Parents as Partners, Teacher Support Network, and Family Reading) and then discusses the first of…

  12. One project`s waste is another project`s resource

    SciTech Connect

    Short, J.

    1997-02-01

    The author describes the efforts being made toward pollution prevention within the DOE complex, as a way to reduce overall project costs, in addition to decreasing the amount of waste to be handled. Pollution prevention is a concept which is trying to be ingrained into project planning. Part of the program involves the concept that ultimately the responsibility for waste comes back to the generator. Parts of the program involve efforts to reuse materials and equipment on new projects, to recycle wastes to generate offsetting revenue, and to increase awareness, accountability and incentives so as to stimulate action on this plan. Summaries of examples are presented in tables.

  13. NACA documents database project

    NASA Technical Reports Server (NTRS)

    Smith, Ruth S.

    1991-01-01

    The plan to get all the National Advisory Committee on Aeronautics (NACA) collection online, with quality records, led to the NACA Documents Data base Project. The project has a two fold purpose: (1) to develop the definitive bibliography of NACA produced and/or held documents; and (2) to make that bibliography and the associated documents available to the aerospace community. This study supports the first objective by providing an analysis of the NACA collection and its bibliographic records, and supports the second objective by defining the NACA archive and recommending methodologies for meeting the project objectives.

  14. The Methanol Economy Project

    SciTech Connect

    Olah, George; Prakash, G. K.

    2014-02-01

    The Methanol Economy Project is based on the concept of replacing fossil fuels with methanol generated either from renewable resources or abundant natural (shale) gas. The full methanol cycle was investigated in this project, from production of methanol through bromination of methane, bireforming of methane to syngas, CO2 capture using supported amines, co-electrolysis of CO2 and water to formate and syngas, decomposition of formate to CO2 and H2, and use of formic acid in a direct formic acid fuel cell. Each of these projects achieved milestones and provided new insights into their respective fields.

  15. Prometheus Project final report

    NASA Technical Reports Server (NTRS)

    Taylor, Randall

    2005-01-01

    This Final Report serves as an executive summary of the Prometheus Project's activities and deliverables from November 2002 through September 2005. It focuses on the challenges from a technical and management perspective, what was different and innovative about this project, and identifies the major options, decisions, and accomplishments of the Project team as a whole. However, the details of the activities performed by DOE NR and its contractors will be documented separately in accordance with closeout requirements of the DOE NR and consistent with agreements between NASA and NR.

  16. West Valley Demonstration Project

    SciTech Connect

    Not Available

    1991-01-01

    Under the West Valley Demonstration Project Act, Public Law 96-368, liquid high-level radioactive waste stored at the Western New York Nuclear Service Center in West Valley, New York, is to be solidified (vitrified) in borosilicate glass and transported to a federal repository for geologic disposal. This waste material resulted from spent nuclear fuel reprocessing operations conducted between 1966 and 1972. Project costs are shared by the US Department of Energy (90 percent) and the New York State Energy Research and Development Authority (10 percent). The site on which the Project is located is owned by New York State. This report is an overview of West Valley's plans and accomplishments.

  17. NAVAJO ELECTRIFICATION DEMONSTRATION PROJECT

    SciTech Connect

    Terry W. Battiest

    2008-06-11

    The Navajo Electrification Demonstration Project (NEDP) is a multi-year project which addresses the electricity needs of the unserved and underserved Navajo Nation, the largest American Indian tribe in the United States. The program serves to cumulatively provide off-grid electricty for families living away from the electricty infrastructure, line extensions for unserved families living nearby (less than 1/2 mile away from) the electricity, and, under the current project called NEDP-4, the construction of a substation to increase the capacity and improve the quality of service into the central core region of the Navajo Nation.

  18. Project LEAF Documents

    EPA Pesticide Factsheets

    Project LEAF has a goal of educating farmworkers about how to reduce pesticide exposure to their families from pesticide residues they may be inadvertently taking home on their clothing, etc. Find outreach materials.

  19. DOE Robotics Project

    SciTech Connect

    Not Available

    1991-01-01

    This document provide the bimonthly progress reports on the Department of Energy (DOE) Robotics Project by the University of Michigan. Reports are provided for the time periods of December 90/January 91 through June 91/July 91. (FI)

  20. Quartermaster Reach Restoration Project

    EPA Pesticide Factsheets

    Information about the SFBWQP Quartermaster Reach Restoration Project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.

  1. Status of CSNS Project

    NASA Astrophysics Data System (ADS)

    Zhang, J.; Fu, S. N.; Chen, H. S.; Chen, Y. W.; Chen, Y. B.; Dong, H. Y.; Fang, S. X.; Huang, K. X.; Jin, D. P.; Kang, W.; Li, J.; Liu, H. C.; Ma, L.; Ouyang, H. F.; Qu, H. M.; Qi, X.; Sun, H.; Tang, J. Y.; Wang, Q. B.; Wang, S.; Xu, T. G.

    The China Spallation Neutron Source (CSNS) accelerator is designed to accelerate proton beam pulses to 1.6 GeV at 25 Hz repetition rate, striking a solid metal target to produce spallation neutrons. The accelerator provides a beam power of 100 kW on the target in the first phase and then 500 kW in the second phase by increasing the average beam intensity 5 times while raising the linac output energy. The project construction has been formally launched in 2011 and it is planned to complete the project in March 2018. It is one of the high intensity proton accelerator projects in the world and it imposes a great challenge to Chinese accelerator community. This presentation will cover the status and challenges of the CSNS project.

  2. Evaluation of microfinance projects.

    PubMed

    Johnson, S

    1999-08-01

    This paper criticizes the quick system proposed by Henk Moll for evaluating microfinance projects in the article ¿How to Pre-Evaluate Credit Projects in Ten Minutes¿. The author contended that there is a need to emphasize the objectives of the project. The procedure used by Moll, he contended, is applicable only to projects that have only two key objectives, such as credit operations, and the provision of services. Arguments are presented on the three specific questions proposed by Moll, ranging from the availability of externally audited financial reports, the performance of interest rate on loans vis-a-vis the inflation rate, and the provision of loans according to the individual requirements of the borrowers. Lastly, the author emphasizes that the overall approach is not useful and suggests that careful considerations should be observed in the use or abuse of a simple scoring system or checklist such as the one proposed by Moll.

  3. The Poisons Project.

    ERIC Educational Resources Information Center

    Crawford, Barbara A.

    1998-01-01

    Details a project in which students explore and study the poisons in their environment by asking and finding answers to their own research questions. Includes some suggestions for involving students successfully in inquiry-based learning. (DDR)

  4. Municipal Complex Solar Project

    SciTech Connect

    Sher, Jono; Toth, Andrew

    2015-02-12

    This project is a great benefit to the City of Perth Amboy by saving energy and savings costs. The project serves as a great example to city residents about the importance of renewable energy, energy conservation and other environmental topics. An electronic display in the City Hall shows how much energy was generated on that day, how much energy is saved, and environmental benefits. The project serves to educate people of environmental concerns and may spark the interest of individuals in other environmental topics. Hopefully, other residents will be encouraged to use solar energy. The project is also saving money for the City and its taxpayers. Anywhere we can save money means that residents can pay less in taxes and/or the City can provide improved services.

  5. The Classroom Space Project.

    ERIC Educational Resources Information Center

    Verbickas, Sarah

    2002-01-01

    Introduces the Classroom Space project aimed at revitalizing science education at Key Stages 3 and 4 by using exciting examples from Space Science and Astronomy to illustrate key science concepts. (Author/YDS)

  6. Vitamin D Pooling Project

    Cancer.gov

    The Vitamin D Pooling Project of Rarer Cancers brought together investigators from 10 cohorts to conduct a large prospective epidemiologic study of the association between vitamin D status and seven rarer cancers.

  7. Robotic Lander Development Project

    NASA Video Gallery

    The Robotic Lander Development Project at the Marshall Center is testing a prototype lander that will aid in the design and development of a new generation of small, smart, versatile robotic lander...

  8. Partridge Creek Diversion Project

    EPA Pesticide Factsheets

    Goal: prevent mercury contamination by keeping the creek from flowing through a mine pit. The project improved brook trout habitat, green infrastructure, the local economy, and decreased human health risks. Includes before-and-after photos.

  9. Space Traveler Project.

    ERIC Educational Resources Information Center

    Instructor, 1981

    1981-01-01

    Describes the winners of the Space Traveler Project, a contest jointly sponsored by Rockwell International, NASA, and this magazine to identify worthwhile elementary science programs relating to the Space Shuttle. (SJL)

  10. Mathematics Case Methods Project.

    ERIC Educational Resources Information Center

    Barnett, Carne S.

    1998-01-01

    Presents an overview and analysis of the Mathematics Case Methods Project, which uses cases in order to examine and reflect upon teaching. Focuses on a special kind of teacher knowledge, coined pedagogical-content knowledge. (ASK)

  11. Navajo Electrification Demonstraiton Project

    SciTech Connect

    Larry Ahasteen, Project Manager

    2006-07-17

    This is a final technical report required by DOE for the Navajo Electrification Demonstration Program, This report covers the electric line extension project for Navajo families that currently without electric power.

  12. Air Traffic Network Project

    NASA Technical Reports Server (NTRS)

    1997-01-01

    The high level requirement of the Air Traffic Network (ATN) project is to provide a mechanism for evaluating the impact of router scheduling modifications on a networks efficiency, without implementing the modifications in the live network.

  13. Project Delivery Methods.

    ERIC Educational Resources Information Center

    Dolan, Thomas G.

    2003-01-01

    Describes project delivery methods that are replacing the traditional Design/Bid/Build linear approach to the management, design, and construction of new facilities. These variations can enhance construction management and teamwork. (SLD)

  14. Fort Yukon Greenhouse Project

    EPA Pesticide Factsheets

    The Tanana Chiefs Conference is an EPA Climate Showcase Community. EPA’s Climate Showcase Communities Program helps local governments and tribal nations pilot innovative, cost-effective and replicable community-based greenhouse gas reduction projects.

  15. Principles of project management

    NASA Technical Reports Server (NTRS)

    1982-01-01

    The basic principles of project management as practiced by NASA management personnel are presented. These principles are given as ground rules and guidelines to be used in the performance of research, development, construction or operational assignments.

  16. Lake Charles CCS Project

    SciTech Connect

    Leib, Thomas; Cole, Dan

    2015-06-30

    In late September 2014 development of the Lake Charles Clean Energy (LCCE) Plant was abandoned resulting in termination of Lake Charles Carbon Capture and Sequestration (CCS) Project which was a subset the LCCE Plant. As a result, the project was only funded through Phase 2A (Design) and did not enter Phase 2B (Construction) or Phase 2C (Operations). This report was prepared relying on information prepared and provided by engineering companies which were engaged by Leucadia Energy, LLC to prepare or review Front End Engineering and Design (FEED) for the Lake Charles Clean Energy Project, which includes the Carbon Capture and Sequestration (CCS) Project in Lake Charles, Louisiana. The Lake Charles Carbon Capture and Sequestration (CCS) Project was to be a large-scale industrial CCS project intended to demonstrate advanced technologies that capture and sequester carbon dioxide (CO2) emissions from industrial sources into underground formations. The Scope of work was divided into two discrete sections; 1) Capture and Compression prepared by the Recipient Leucadia Energy, LLC, and 2) Transport and Sequestration prepared by sub-Recipient Denbury Onshore, LLC. Capture and Compression-The Lake Charles CCS Project Final Technical Report describes the systems and equipment that would be necessary to capture CO2 generated in a large industrial gasification process and sequester the CO2 into underground formations. The purpose of each system is defined along with a description of its equipment and operation. Criteria for selection of major equipment are provided and ancillary utilities necessary for safe and reliable operation in compliance with environmental regulations are described. Construction considerations are described including a general arrangement of the CCS process units within the overall gasification project. A cost estimate is provided, delineated by system area with cost breakdown showing equipment, piping and materials

  17. Visible Human Project

    MedlinePlus

    ... Toxicology Health Services Research & Public Health Health Information Technology NLM for You Grants & Funding Meaningful Use Tools Training & Outreach Network of Medical Libraries Regional Activities Careers @ NLM Mobile Gallery Site Navigation Home The Visible Human Project ® ...

  18. Student Originated Projects

    ERIC Educational Resources Information Center

    Young, L. J.; Purcupile, J. C.

    1972-01-01

    Describes an interdisciplinary research project on production of food or fodder yeast from sewage. Indicates the presence of satisfactory educational and experimental results in operation of a pilot plant. (CC)

  19. Project financial evaluation

    SciTech Connect

    None, None

    2009-01-18

    The project financial section of the Renewable Energy Technology Characterizations describes structures and models to support the technical and economic status of emerging renewable energy options for electricity supply.

  20. Desktop Computing Integration Project

    NASA Technical Reports Server (NTRS)

    Tureman, Robert L., Jr.

    1992-01-01

    The Desktop Computing Integration Project for the Human Resources Management Division (HRMD) of LaRC was designed to help division personnel use personal computing resources to perform job tasks. The three goals of the project were to involve HRMD personnel in desktop computing, link mainframe data to desktop capabilities, and to estimate training needs for the division. The project resulted in increased usage of personal computers by Awards specialists, an increased awareness of LaRC resources to help perform tasks, and personal computer output that was used in presentation of information to center personnel. In addition, the necessary skills for HRMD personal computer users were identified. The Awards Office was chosen for the project because of the consistency of their data requests and the desire of employees in that area to use the personal computer.

  1. Developpement et application d'un systeme mobile de laser terrestre pour quantifier le bilan sedimentaire des plages

    NASA Astrophysics Data System (ADS)

    Van-Wierts, Stefanie

    Au Québec maritime, l'érosion côtière est une problématique d'envergure, notamment sur les côtes de formations meubles. Les plages ont un rôle de zone tampon ayant comme fonction naturelle d'absorber l'énergie des vagues et donc d'assurer l'équilibre de certains écosystèmes et le maintien de l'écoumène en réduisant l'érosion de la côte. Les méthodes d'acquisition conventionnelles ne permettent pas de quantifier convenablement les changements morphosédimentaires d'une plage à l'échelle des cellules hydrosédimentaires. Le manque de méthode d'acquisition fiable et de données quantitatives mène à une surestimation ou à une sous-estimation de la disponibilité sédimentaire d'un système côtier. Pour contrer ces lacunes et afin de minimiser les coûts d'acquisition, un nouveau système mobile de LiDAR terrestre a été mis en place, permettant d'acquérir des données topographiques de l'estran, de la haute plage et des falaises. Le système multicapteurs comprend un LiDAR, un système de navigation à haute précision (IMU et D-GPS) et une caméra. L'ensemble des instruments et capteurs sont montés sur un véhicule de type tout-terrain. Le système a été évalué sur la zone côtière de la péninsule de Manicouagan. La comparaison des données LiDAR avec 1 050 points de référence géopositionnés au D-GPS montre une erreur verticale moyenne de 0,1 m sur les secteurs de plage. Les résultats montrent que le volume sédimentaire moyen des plages devant les zones où la ligne de rivage présente un ouvrage de protection en enrochement (12 m 3/m) est plus de trois fois plus faible que devant les secteurs à l'état naturel (35,5 m3/m). La moyenne des secteurs en transition, constituant les segments où une zone artificielle et une zone naturelle se chevauchent présentent un volume moyen de 28 m3/m. Aussi, les plages devant les secteurs anthropisés sont en moyenne près de 2 fois plus étroites (12,7 m) que devant les secteurs naturels (25

  2. The Mississippi CCS Project

    SciTech Connect

    Doug Cathro

    2010-09-30

    The Mississippi CCS Project is a proposed large-scale industrial carbon capture and sequestration (CCS) project which would have demonstrated advanced technologies to capture and sequester carbon dioxide (CO{sub 2}) emissions from industrial sources into underground formations. Specifically, the Mississippi CCS Project was to accelerate commercialization of large-scale CO{sub 2} storage from industrial sources by leveraging synergy between a proposed petcoke to Substitute Natural Gas (SNG) plant that is selected for a Federal Loan Guarantee and would be the largest integrated anthropogenic CO{sub 2} capture, transport, and monitored sequestration program in the U.S. Gulf Coast Region. The Mississippi CCS Project was to promote the expansion of enhanced oil recovery (EOR) in the Mississippi, Alabama and Louisiana region which would supply greater energy security through increased domestic energy production. The capture, compression, pipeline, injection, and monitoring infrastructure would have continued to sequester CO{sub 2} for many years after the completion of the term of the DOE agreement. The objectives of this project were expected to be fulfilled through two distinct phases. The overall objective of Phase 1 was to develop a fully definitive project basis for a competitive Renewal Application process to proceed into Phase 2 - Design, Construction and Operations. Phase 1 included the studies that establish the engineering design basis for the capture, compression and transportation of CO{sub 2} from the MG SNG Project, and the criteria and specifications for a monitoring, verification and accounting (MVA) plan at the Soso oil field in Mississippi. The overall objective of Phase 2, was to execute design, construction and operations of three capital projects: the CO{sub 2} capture and compression equipment, the Mississippi CO{sub 2} Pipeline to Denbury's Free State Pipeline, and an MVA system at the Soso oil field.

  3. Badgers gasohol project

    SciTech Connect

    Not Available

    1981-07-29

    It is reported that Badger Energy is to participate in a gasohol project that will utilize the Tate and Lyle fermentation process at the proposed plant at Thibodaux, La., to produce 20 million gal/year of ethanol. The facility will be able to process alternative feedstocks such as grain, sorghum and sugar cane. The Dept. of Energy is funding the first phase of the project, which includes a feasibility study, by a grant of $1.9 million.

  4. Spray combustion stability project

    NASA Technical Reports Server (NTRS)

    Jeng, San-Mou; Litchford, Ron J.

    1990-01-01

    This report summarizes research activity on the Spray Combustion Stability Project, characterizes accomplishments and current status, and discusses projected future work. The purpose is to provide a concise conceptual overview of the research effort so the reader can quickly assimilate the gist of the research results and place them within the context of their potential impact on liquid rocket engine design technology. Therefore, this report does not elaborate on many of the detailed technical aspects of the research program.

  5. A Monster Transfer Project

    ERIC Educational Resources Information Center

    Brennan, Alan

    2003-01-01

    In this article, the author discusses a transfer project that involves the use of "monsters" to provide year 6 with a series of post-SATs activities which could then be built on in year 7. The project evolves from a science-based activity into a cross-curricular one. "Monsters" was used as a fun revision tool for year 6 pupils covering the area of…

  6. Student Research Projects

    NASA Technical Reports Server (NTRS)

    Yeske, Lanny A.

    1998-01-01

    Numerous FY1998 student research projects were sponsored by the Mississippi State University Center for Air Sea Technology. This technical note describes these projects which include research on: (1) Graphical User Interfaces, (2) Master Environmental Library, (3) Database Management Systems, (4) Naval Interactive Data Analysis System, (5) Relocatable Modeling Environment, (6) Tidal Models, (7) Book Inventories, (8) System Analysis, (9) World Wide Web Development, (10) Virtual Data Warehouse, (11) Enterprise Information Explorer, (12) Equipment Inventories, (13) COADS, and (14) JavaScript Technology.

  7. Black Pine Circle Project

    ScienceCinema

    Mytko, Christine

    2016-07-12

    A group of seventh graders from Black Pine Circle school in Berkeley had the opportunity to experience the Advanced Light Source (ALS) as "users" via a collaborative field trip and proposal project. The project culminated with a field trip to the ALS for all seventh graders, which included a visit to the ALS data visualization room, a diffraction demonstration, a beamline tour, and informative sessions about x-rays and tomography presented by ALS scientists.

  8. The Supernova Key Project

    NASA Astrophysics Data System (ADS)

    Howell, Dale Andrew

    2017-01-01

    Las Cumbres Observatory is a global network of robotic telescopes specializing in time domain astronomy. It currently has nine 1m telescopes, two 2m telescopes, and seven 0.4m telescopes. The Supernova Key Project is a 3 year program to obtain light curves and spectra of 500 supernovae with Las Cumbres Observatory. Here we show recent results, detail plans for the next Supernova Key Project, and explain how the US community can get involved.

  9. COBRA Main Engine Project

    NASA Technical Reports Server (NTRS)

    Snoddy, Jim; Sides, Steve; Lyles, Garry M. (Technical Monitor)

    2002-01-01

    The COBRA (CO-Optimized Booster for Reusable Applications) project include the following: 1. COBRA main engine project team. 2. COBRA and RLX cycles selected. 3. COBRA proto-type engine approach enables mission success. 4. COBRA provides quick, low cost demo of cycle and technologies. 5. COBRA cycle I risk reduction supports. 6. Achieving engine safety. 6. RLX cycle I risk reduction supports. 7. Flight qualification. 9. Life extension engine testing.

  10. Black Pine Circle Project

    SciTech Connect

    Mytko, Christine

    2014-03-31

    A group of seventh graders from Black Pine Circle school in Berkeley had the opportunity to experience the Advanced Light Source (ALS) as "users" via a collaborative field trip and proposal project. The project culminated with a field trip to the ALS for all seventh graders, which included a visit to the ALS data visualization room, a diffraction demonstration, a beamline tour, and informative sessions about x-rays and tomography presented by ALS scientists.

  11. Solar education project workshop

    SciTech Connect

    Smith, J.B.

    1980-10-31

    A summary of proceedings of the Solar Education Project Workshop is presented. The workshop had as its focus the dissemination of curriculum materials developed by the Solar Energy Project of the New York State Department of Education under the sponsorship of the US Department of Energy. It includes, in addition to presentations by speakers and workshop leaders, specific comments from participants regarding materials available and energy-related activities underway in their respective states and suggested strategies from them for ongoing dissemination efforts.

  12. Current projects in Fuzzy Control

    NASA Technical Reports Server (NTRS)

    Sugeno, Michio

    1990-01-01

    Viewgraphs on current projects in fuzzy control are presented. Three projects on helicopter flight control are discussed. The projects are (1) radio control by oral instructions; (2) automatic autorotation entry in engine failure; and (3) unmanned helicopter for sea rescue.

  13. Project S'COOL

    NASA Technical Reports Server (NTRS)

    Green, Carolyn J.; Chambers, Lin H.

    1998-01-01

    The Students Clouds Observations On-Line or S'COOL project was piloted in 1997. It was created with the idea of using students to serve as one component of the validation for the Clouds and the Earth's Radiant Energy System (CERES) instrument which was launched with the Tropical Rainfall Measuring Mission (TRMM) in November, 1997. As part of NASA's Earth Science Enterprise CERES is interested in the role clouds play in regulating our climate. Over thirty schools became involved in the initial thrust of the project. The CERES instrument detects the location of clouds and identifies their physical properties. S'COOL students coordinate their ground truth observations with the exact overpass of the satellite at their location. Their findings regarding cloud type, height, fraction and opacity as well as surface conditions are then reported to the NASA Langley Distributed Active Archive Center (DAAC). The data is then accessible to both the CERES team for validation and to schools for educational application via the Internet. By March of 1998 ninety-three schools, in nine countries had enrolled in the S'COOL project. Joining the United States participants were from schools in Australia, Canada, France, Germany, Norway, Spain, Sweden, and Switzerland. The project is gradually becoming the global project envisioned by the project s creators. As students obtain the requested data useful for the scientists, it was hoped that students with guidance from their instructors would have opportunity and motivation to learn more about clouds and atmospheric science as well.

  14. Consensus formalisé: recommandations de pratiques cliniques pour la prise en charge de la lombalgie aiguë du patient africain

    PubMed Central

    Elleuch, Mohamed; El Maghraoui, Abdellah; Griene, Brahim; Nejmi, Mati; Ndongo, Souhaibou; Serrie, Alain

    2015-01-01

    La lombalgie aiguë est la pathologie rhumatismale la plus fréquente en Afrique. L’épidémiologie et la présentation clinique ne diffèrent pas de celles observées sur les autres continents. En revanche, les aspects psycho-sociaux, la disponibilité des traitements, l'accès aux soins et le poids culturel des médecines traditionnelles sont autant de spécificités qui ont conduit à la réalisation du 1er consensus d'experts en rhumatologie pour la prise en charge du patient africain. Destiné aux praticiens, ce travail collaboratif multinational a pour objectif de fournir 11 recommandations de pratiques cliniques simples, fondées sur les preuves, et adaptées aux conditions de l'exercice médical en Afrique. Leur ambition est d'améliorer la prise en charge de la lombalgie aigue par une évaluation initiale clinique pertinente, une diminution des examens radiologiques inutiles, une prescription médicamenteuse adéquate et l'abandon de procédures invasives inappropriées. PMID:26955427

  15. Utilisation de faisceaux d'ions oxygène réactifs pour la gravure de polymères utilisables en optoélectronique

    NASA Astrophysics Data System (ADS)

    Moussant, C.; Lucas, B.; Ratier, B.; Moliton, A.; François, B.

    1998-06-01

    Reactive Ion Beam Etching (RIBE) of a fluorinated polyimide (6FDA-ODA) has been achieved with Oxygene ions. A 5keV and 0.5mA/cm2 ion beam leads to a 500 Å/mn sputtering speed of the material. A similar behavior was also observed in the case of PPP. La gravure d'un polyimide fluoré (6FDA-ODA) a été réalisée par un faisceau parallèle d'ions oxygène réactifs (Réactive Ion Beam Etching : RIBE). Pour une énergie des ions de 5keV et à des densités de courant de l'ordre de 0.5mA/cm2 une vitesse de gravure de 500 Å/mn a été obtenue pour ce matériau. Avec le PPP un comportement voisin a été également observé.

  16. The efficacy and safety of alphacypermethrin as a pour-on treatment for water buffalo (Bubalus bubalis) infested with Haematopinus tuberculatus (Phthiraptera: Haematopinidae).

    PubMed

    Veneziano, Vincenzo; Neglia, Gianluca; Cimmino, Roberta; Balestrieri, Anna; Rufrano, Domenico; Bastianetto, Eduardo; Santoro, Mario; Gokbulut, Cengiz

    2013-08-01

    The sucking louse Haematopinus tuberculatus (Burmeister 1839) is an ectoparasite of buffaloes, cattle, camels, and American bison. Alphacypermethrin (ACYP) is a pyrethroid insecticide commonly used to control arthropods of veterinary and public health interest. Therapeutics, such as antiparasitic compounds, is often administered to buffaloes based on dosage and intervals recommended for cattle because very few drugs have buffalo-specific label indications. A trial was conducted on 20 louse-infested buffaloes at a farm to assess the efficacy and safety of ACYP pour-on, at the manufacturer's recommended dose for cattle, on buffaloes naturally infested by H. tuberculatus. Ten animals were assigned to ACYP-treated group (ACYP-group) and ten to untreated control group (C-group). On day 0, all ACYP-group buffaloes received alphacypermethrin pour-on. Louse counts were performed on days -1, 7, 14, 21, 28, 35, 42, 49, and 56 at eight predilection sites on the skin of each buffalo. ACYP was completely effective (100%) at day 7, highly effective (99.8%) at day 14, and completely effective (100%) from day 21 until the end of the study (day 56 post-treatment). During the trial, ACYP was well tolerated by all animals as there were no observed clinically adverse reactions. The results of this trial suggest that ACYP is an effective, safe, and user-friendly compound suitable for treatment of buffaloes with natural louse infestations.

  17. Predicting the Effect of Pouring Temperature on the Crystallite Density, Remelting, and Crystal Growth Kinetics in the Solidification of Aluminum Alloys

    NASA Astrophysics Data System (ADS)

    Ferguson, J. B.; Tabandeh-Khorshid, Meysam; Mantas, John C.; Rohatgi, Pradeep K.; Cho, Kyu; Kim, Chang-Soo

    2014-08-01

    In the present work, we developed an analytical model to describe the effect of pouring temperature on the crystallite density, remelting, growth kinetics, and the resultant final grain size for aluminum (Al)-based alloys synthesized using gravity casting. The model predicts that there are three regimes of pouring temperature/grain size-related behavior: (i) at low superheats, grain size is small and relatively constant; (ii) at intermediate levels of superheat, there appears to be a transitional behavior where grain size increases in a rapid, non-linear fashion; and (iii) at high superheats, grain size increases linearly with increasing temperature. This general pattern is expected to be shifted upward as distance from the bottom of the casting increases, which is likely a result of the slower cooling rates and/or longer solidification times with increasing distance from the bottom of the casting. To validate the model, a set of experiments has been conducted using Al-Cu and Al-Si alloys ( i.e., Al-3.0 wt pct Cu, Al-4.5 wt pct Cu, and Al-A356.2 alloys), and the experimental measurements showed consistent results with theoretical predictions.

  18. Effects of the pouring temperature on the formation of the bonding zone between AZ91 and AlSi17 in the compound casting process

    NASA Astrophysics Data System (ADS)

    Mola, R.; Bucki, T.; Dziadoń, A.

    2017-02-01

    The compound casting process was used to join AZ91 magnesium alloy to AlSi17 aluminium alloy. Liquid AZ91 was poured onto a solid AlSi17 insert placed in a steel mould heated to 370 °C. The experimental results showed that the temperature of the AZ91 melt affected the formation of the bonding zone between the two alloys. A continuous bonding zone was formed by applying a pouring temperature of 650 °C. The use of higher temperatures, i.e. 680 °C and 700 °C, did not lead to the formation of a continuous metallurgical transition zone at the AZ91/AlSi17 interface. The bonding zone was analysed using an optical microscope and a scanning electron microscope equipped with an energy dispersive X-ray (EDS) detector. The structural constituents of the bonding zone near the AlSi17 alloy were: an Al3Mg2 intermetallic phase, primary Si particles surrounded by a rim of an Mg2Si intermetallic phase and fine Mg2Si particles. The area of the bonding zone that was adjacent to the AZ91 alloy had a eutectic structure composed of an Mg17Al12 intermetallic phase and a solid solution of Al and Si in Mg.

  19. Fistule artério-veineuse ulno-basilique pour hémodialyse au CHU de Yaoundé: à propos de deux cas

    PubMed Central

    Guifo, Marc Leroy; Kaze, Francois Folefak; Ndoumbe, Aurélien; Halle, Marie Patrice; Bitang, Louis Joss; Pisoh, Christopher Tagnyin; Takongmo, Samuel

    2013-01-01

    La fistule ulno-basilique est une éventualité peu sollicitée dans le choix des abords vasculaires pour hémodialyse. Elle est construite sur la veine basilique qui est souvent la seule veine épargnée par les ponctions veineuses de routine dans les services de médecine. De par l'existence de nombreuses complications comme l'infection des prothèses et des cathéters centraux, les thromboses, les patients hémodialysés chroniques nécessitent plus d'un accès veineux au cours de leur suivi médical. Les fistules artério-veineuses natives présentent moins de risques de complications que les prothèses d'une façon générale et une plus longue durée de vie. La confection d'une fistule sur une topographie proximale compromet le recourt à cette veine sur une localisation distale ultérieurement. Il existe donc une hiérarchisation dont il faut tenir compte pour une utilisation optimale du capital veineux disponible. Nous rapportons ici deux observations concernant des patients chez qui deux fistules ulno-basiliques ont été réalisées avec succès au CHU de Yaoundé. PMID:24244789

  20. The effects of select factors on the pour point, cloud point, and cold filter plugging point of soybean-, choice white grease-, and corn-based biodiesel blends

    NASA Astrophysics Data System (ADS)

    Jezierski, Kelly

    Soybean-, choice white grease-, and corn-based biodiesel from different sources blended with cold flow modifiers from 0.0% to 4.0% by weight were tested for cloud point (CP), cold filter plugging point (CFPP), and pour point (PP). The soybean-based blend that showed the best result was four weight percent of TechnolRTM B100 Biodiesel Cold Flow Improver used on B99 obtained from Wacker Oil, which resulted in a CP of -3°C, a PP of -18 °C, and a CFPP of -7°C. The TechnolRTM product slightly improved the CFPP of corn-based biodiesel when used at 2.0 weight percent, reducing it from -1°C to -4°C. No significant improvements were observed on choice white grease-based biodiesel blends. It was shown that, CFPP is not a linear function of the CP; the order of cold flow properties here occasionally follows the trend of the Cloud Point being greater than or equal to the Pour Point which is greater than or equal to the Cold Filter Plugging Point; and the source of the biodiesel also has a significant effect on the cold flow properties.

  1. Developpement d'outils quantitatifs pour le suivi par imagerie TEP/TDM de la reponse a la chimiotherapie et de sa toxicite

    NASA Astrophysics Data System (ADS)

    Croteau, Etienne

    L'objectif de ce projet de doctorat est de developper des outils quantitatifs pour le suivi des traitements de chimiotherapie pour le cancer du sein et de leurs effets cardiotoxiques a l'aide de l'imagerie TEP dynamique. L'analyse cinetique en TEP dynamique permet l'evaluation de parametres biologiques in vivo. Cette analyse peut etre utilise pour caracteriser la reponse tumorale a la chimiotherapie et les effets secondaires nefastes qui peuvent en resulter. Le premier article de cette these decrit la mise au point des techniques d'analyse cinetique qui utilisent la fonction d'entree d'un radiotraceur derive de l'image dynamique. Des corrections de contamination radioactive externe (epanchement) et de l'effet de volume partiel ont ete necessaires pour standardiser l'analyse cinetique et la rendre quantitative. Le deuxieme article porte sur l'evaluation d'un nouveau radiotraceur myocardique. Le 11C-acetoacetate, un nouveau radiotraceur base sur un corps cetonique, a ete compare au 11C-acetate, couramment utilise en imagerie cardiaque TEP. L'utilisation de 3H-acetate et 14C-acetoacetate ont permis d'elucider la cinetique de ces traceurs depuis la fonction d'entree et la captation par les mitochondries cardiaques qui reflete la consommation en oxygene, jusqu'a la liberation de leurs principaux metabolites reciproques (3H20 et 14CO2). Le troisieme et dernier article de cette these presente l'integration d'un modele qui evalue la reserve cardiaque de perfusion et de consommation en oxygene. Un modele de cardiomyopathie a ete etabli a l'aide d'un agent chimiotherapeutique contre le cancer du sein, la doxorubicine, reconnu comme etant cardiotoxique. Un protocole de repos/effort a permis d'evaluer la capacite d'augmentation de perfusion et de consommation en oxygene par le coeur. La demonstration d'une reserve cardiaque reduite caracterise la cardiotoxicite. La derniere contribution de cette these porte sur la mise au point de methodes peu invasives pour mesurer la

  2. ANALYSIS OF SLUDGE BATCH 4 (MACROBATCH 5) FOR CANISTER S02902 AND SLUDGE BATCH 5 (MACROBATCH 6) FOR CANISTER S03317 DWPF POUR STREAM GLASS SAMPLES

    SciTech Connect

    Reigel, M.; Bibler, N.

    2010-10-04

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 4 (SB4), Macrobatch 5 (MB5) on May 29, 2007. Sludge Batch 4 was a blend of the heel of Tank 40 from Sludge Batch 3 (SB3) and SB4 material qualified in Tank 51. On November 28, 2008, DWPF began processing Sludge Batch 5 (SB5) from Tank 40 which is a blend of the heel of Tank 40 from SB4, SB5 material qualified in Tank 51 and H-Canyon Pu and Np transfers. SB4 was processed using Frit 510 and SB5 used Frit 418. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. During the processing of SB4 and SB5, glass samples were obtained during the pouring of canisters S02902 and S03317, respectively. The samples were transferred to the Savannah River National Laboratory (SRNL) where they were analyzed (durability, chemical and radionuclide composition). The following observations and conclusions are drawn from the analytical results provided in this report: (1) The sum of the oxides for the chemical composition of both the SB4 and SB5 pour stream glasses is within the Product Composition Control System (PCCS) acceptance limits (95 {le} sum of oxides {le} 105). (2) The calculated Sludge Dilution Factor (SDF) for SB4 is 2.52. The measured radionuclide content is in good agreement with the calculated values from the dried sludge results from the SB4 Waste Acceptance Production Specification (WAPS) sample (References 1 and 19). (3) The calculated SDF for SB5 is 2.60. The measured radionuclide content is in good agreement with the calculated values from the dried sludge results from the SB5 WAPS sample (References 2 and 20). (4) Scanning Electron Microscopy (SEM) analysis shows there are noble metal inclusions, primarily ruthenium, present in both pour stream samples. (5) The Product

  3. Developpement d'un catalyseur nickel-alumine efficace pour le reformage de diesel a la vapeur d'eau et etude du systeme reactionnel

    NASA Astrophysics Data System (ADS)

    Fauteux-Lefebvre, Clemence

    Le developpement de sources d'energie alternatives fiables et efficaces est aujourd'hui une necessite. L' interet dans le reformage d'hydrocarbures liquides est ainsi croissant puisqu'il s'agit d'une voie pour l'alimentation des piles a combustible. Les piles a combustible ont une efficacite pour la conversion d'energie en electricite plus grande que celle des moteurs a combustion et font ainsi partie de la recherche de solution en efficacite energetique. Ces piles consomment de l'hydrogene comme combustible pour produire de l'electricite, d'ou l'interet pour le reformage. En effet, cette reaction permet de produire de l'hydrogene et du monoxyde de carbone (un autre combustible des piles a combustible a electrolyte solide) a partir d'hydrocarbure liquide, notamment le diesel. Les piles pourraient donc etre integrees avec une unite de reformage leur fournissant directement le combustible necessaire a partir de diesel. Dans ce projet de recherche, un nouveau catalyseur de nickel sous forme de spinelle nickel-alumine (spinelle NiAl2O4 sur support d'alumine et de zircone stabilisee avec yttria) a ete developpe et teste en laboratoire pour du reformage de propane, d'hydrocarbures liquides et de diesel, a la vapeur d'eau. Par ailleurs, une methode d'ajout des reactifs novatrice a ete utilisee afin de diminuer la pyrolyse precedant le reformage, en utilisant une emulsion. Les resultats de reformage d'hydrocarbures purs ont montre des concentrations tres pres de l'equilibre thermodynamique et une activite constante sans desactivation du catalyseur ni formation de carbone, et ce avec des ratios H2O/C de moins de 2.5 et des temperatures d'operation variant entre 630 °C et 750 °C. Lors de tests effectues en utilisant du diesel fossile, a 705°C, avec un debit volumique des reactifs de plus de 50 000 cm3gcat-1h-1 et un ratio H2O/C de moins de 2.5, l'activite a ete maintenue pendant plus de 15 heures, malgre une operation en cycles. L'analyse du catalyseur apres cette

  4. Using a Project Portfolio: Empowerment Evaluation for Model Demonstration Projects.

    ERIC Educational Resources Information Center

    Baggett, David

    For model postsecondary demonstration projects serving individuals with disabilities, a portfolio of project activities may serve as a method for program evaluation, program replication, and program planning. Using a portfolio for collecting, describing, and documenting a project's successes, efforts, and failures enables project staff to take…

  5. Combat Identification (15au): Project Summary and Closeout Report

    DTIC Science & Technology

    2009-07-01

    méthodologie informatique pour étudier les effets de l’environnement (types d’indices visuels, par exemple) et du système (blue force tracking, le suivi des...résultats principaux du projet a été une méthodologie informatique pour l’évaluation de l’IDCbt. Les résultats de l’évaluation expérimentale ont...méthodologie informatique pour étudier les effets de l’environnement (types d’indices visuels, par exemple) et du système (blue force tracking, par

  6. California Hydrogen Infrastructure Project

    SciTech Connect

    Heydorn, Edward C

    2013-03-12

    Air Products and Chemicals, Inc. has completed a comprehensive, multiyear project to demonstrate a hydrogen infrastructure in California. The specific primary objective of the project was to demonstrate a model of a real-world retail hydrogen infrastructure and acquire sufficient data within the project to assess the feasibility of achieving the nation's hydrogen infrastructure goals. The project helped to advance hydrogen station technology, including the vehicle-to-station fueling interface, through consumer experiences and feedback. By encompassing a variety of fuel cell vehicles, customer profiles and fueling experiences, this project was able to obtain a complete portrait of real market needs. The project also opened its stations to other qualified vehicle providers at the appropriate time to promote widespread use and gain even broader public understanding of a hydrogen infrastructure. The project engaged major energy companies to provide a fueling experience similar to traditional gasoline station sites to foster public acceptance of hydrogen. Work over the course of the project was focused in multiple areas. With respect to the equipment needed, technical design specifications (including both safety and operational considerations) were written, reviewed, and finalized. After finalizing individual equipment designs, complete station designs were started including process flow diagrams and systems safety reviews. Material quotes were obtained, and in some cases, depending on the project status and the lead time, equipment was placed on order and fabrication began. Consideration was given for expected vehicle usage and station capacity, standard features needed, and the ability to upgrade the station at a later date. In parallel with work on the equipment, discussions were started with various vehicle manufacturers to identify vehicle demand (short- and long-term needs). Discussions included identifying potential areas most suited for hydrogen fueling stations

  7. Instrument validation project

    SciTech Connect

    Reynolds, B.A.; Daymo, E.A.; Geeting, J.G.H.; Zhang, J.

    1996-06-01

    Westinghouse Hanford Company Project W-211 is responsible for providing the system capabilities to remove radioactive waste from ten double-shell tanks used to store radioactive wastes on the Hanford Site in Richland, Washington. The project is also responsible for measuring tank waste slurry properties prior to injection into pipeline systems, including the Replacement of Cross-Site Transfer System. This report summarizes studies of the appropriateness of the instrumentation specified for use in Project W-211. The instruments were evaluated in a test loop with simulated slurries that covered the range of properties specified in the functional design criteria. The results of the study indicate that the compact nature of the baseline Project W-211 loop does not result in reduced instrumental accuracy resulting from poor flow profile development. Of the baseline instrumentation, the Micromotion densimeter, the Moore Industries thermocouple, the Fischer and Porter magnetic flow meter, and the Red Valve Pressure transducer meet the desired instrumental accuracy. An alternate magnetic flow meter (Yokagawa) gave nearly identical results as the baseline fischer and Porter. The Micromotion flow meter did not meet the desired instrument accuracy but could potentially be calibrated so that it would meet the criteria. The Nametre on-line viscometer did not meet the desired instrumental accuracy and is not recommended as a quantitative instrument although it does provide qualitative information. The recommended minimum set of instrumentation necessary to ensure the slurry meets the Project W-058 acceptance criteria is the Micromotion mass flow meter and delta pressure cells.

  8. The Rural Outreach Project

    NASA Technical Reports Server (NTRS)

    Coleman, Clarence D.

    2000-01-01

    The Rural Outreach Project was designed to increase the diversity of NASA's workforce by: 1) Conducting educational research designed to investigate the most effective strategies for expanding innovative, NASA-sponsored pre-college programs into rural areas; 2) Field-testing identified rural intervention strategies; 3) Implementing expanded NASA educational programs to include 300 rural students who are disabled, female and/or minority; and 4) Disseminating project strategies. The Project was a partnership that included NASA Langley Research Center's Office of Education, Norfolk State University, Cooperative Hampton Roads Organizations for Minorities in Engineering (CHROME) and Paul D. Camp Community College. There were four goals and activities identified for this project; 1) Ascertain effective strategies for expanding successful NASA-sponsored urban-based, pre-college programs into rural settings; 2) Field test identified rural intervention strategies; 3) Publish or disseminate two reports, concerning project research and activities at a national conference; 4) Provide educational outreach to 300, previously underserved, rural students who are disabled, female and /or minority.

  9. The PANDA project

    NASA Astrophysics Data System (ADS)

    Katinka Petersen, Anna; Brasseur, Guy; Granier, Claire; Bouarar, Idir; Wang, Xuemei

    2014-05-01

    The PANDA project Even though air quality in many urbanized and industrialized areas of the world has improved as a result of mitigation actions, it has declined in other regions. This is specifically the case in many emerging countries where emissions have been increasing as a result of rapidly expanding motor vehicle fleets, growing industrial and power generation activities, and domestic and biomass burning. The situation is particularly acute in China and the Western Pacific Region with rapid industrialization and urbanization, where, in spite of efforts to reduce surface emissions of reactive gases, 360,000 people die prematurely from air pollution each year, according to the World Health Organization. The EU-funded PANDA project will offer scientific knowledge that will help China and other nations to use space and in-situ observations together with a modelling system to address improve air quality and human heath at the regional and global scales. Through the proposed cooperation between Europe and China, the following objectives will be reached before the completion of the Project: 1. Improvement of methods for monitoring air quality from combined space and in-situ observations 2. Elaboration of indicators for air quality, in support of European and Chinese policies 3. Development of toolboxes for air quality and emissions monitoring 4. Dissemination of information and educational activities, specifically in China. We would like to introduce the EU-funded project PANDA, and present the first results obtained through the project.

  10. Japan's Sunshine Project

    NASA Astrophysics Data System (ADS)

    1992-07-01

    The 1991 results of the Sunshine Project carried out by the Japanese government's MITI is summarized. The outline of the project is given in terms of basic research and development of new energy technology, Sunshine Project promotion/support researches, and international cooperation. As for the basic R and D, research and development of ocean energy, wind energy, and bio-energy are conducted, and the analytical evaluation is made. Concerning the project promotion/support researches, the issue of introduction of new energy such as energy and environment, energy use best mix, etc. was studied. As to the international cooperation, exchanges with international organizations like IEA, participation in international joint projects, and exchange and collection of information are conducted. Details are mainly given to the studies of the ocean thermal energy conversion system, the large wind turbine power generation system, production of hydrocarbon system from CO2 fixation plant, energy conversion by microbial photosynthesis, production of new fuel oil by biotechnology, growth control compounds for biomass, etc.

  11. 2020 Vision Project Summary

    SciTech Connect

    Gordon, K.W.; Scott, K.P.

    2000-11-01

    Since the 2020 Vision project began in 1996, students from participating schools have completed and submitted a variety of scenarios describing potential world and regional conditions in the year 2020 and their possible effect on US national security. This report summarizes the students' views and describes trends observed over the course of the 2020 Vision project's five years. It also highlights the main organizational features of the project. An analysis of thematic trends among the scenarios showed interesting shifts in students' thinking, particularly in their views of computer technology, US relations with China, and globalization. In 1996, most students perceived computer technology as highly beneficial to society, but as the year 2000 approached, this technology was viewed with fear and suspicion, even personified as a malicious, uncontrollable being. Yet, after New Year's passed with little disruption, students generally again perceived computer technology as beneficial. Also in 1996, students tended to see US relations with China as potentially positive, with economic interaction proving favorable to both countries. By 2000, this view had transformed into a perception of China emerging as the US' main rival and ''enemy'' in the global geopolitical realm. Regarding globalization, students in the first two years of the project tended to perceive world events as dependent on US action. However, by the end of the project, they saw the US as having little control over world events and therefore, we Americans would need to cooperate and compromise with other nations in order to maintain our own well-being.

  12. The Astronomy Genealogy Project

    NASA Astrophysics Data System (ADS)

    Tenn, Joseph S.

    2014-01-01

    The Astronomy Genealogy Project, to be known as AstroGen, will list as many as possible of the world's astronomers with their academic parents (aka thesis advisors) and enable the reader to trace both academic ancestors and descendants. It will be very similar to the highly successful Mathematics Genealogy Project (MGP), available at http://genealogy.math.ndsu.nodak.edu. The MGP, which has been in operation since 1996, now contains the names of about 170,000 "mathematicians." These include many physicists and astronomers, as well as practitioners of related sciences. Mitchel Keller, the director of the MGP, has generously shared the software used in that project, and the American Astronomical Society (AAS) will host AstroGen, a project of the Historical Astronomy Division, on its website. We expect to start seeking entries soon, depending on the availability of computational assistance from the AAS IT department. We are seeking volunteers to help run the project. If you are interested, please contact me at joe.tenn@sonoma.edu.

  13. The human genome project.

    PubMed Central

    Olson, M V

    1993-01-01

    The Human Genome Project in the United States is now well underway. Its programmatic direction was largely set by a National Research Council report issued in 1988. The broad framework supplied by this report has survived almost unchanged despite an upheaval in the technology of genome analysis. This upheaval has primarily affected physical and genetic mapping, the two dominant activities in the present phase of the project. Advances in mapping techniques have allowed good progress toward the specific goals of the project and are also providing strong corollary benefits throughout biomedical research. Actual DNA sequencing of the genomes of the human and model organisms is still at an early stage. There has been little progress in the intrinsic efficiency of DNA-sequence determination. However, refinements in experimental protocols, instrumentation, and project management have made it practical to acquire sequence data on an enlarged scale. It is also increasingly apparent that DNA-sequence data provide a potent means of relating knowledge gained from the study of model organisms to human biology. There is as yet little indication that the infusion of technology from outside biology into the Human Genome Project has been effectively stimulated. Opportunities in this area remain large, posing substantial technical and policy challenges. PMID:8506271

  14. Project Plan Remote Target Fabrication Refurbishment Project

    SciTech Connect

    Bell, Gary L; Taylor, Robin D

    2009-08-01

    authorization for the work was received in July 2009 under the Remote Target Fabrication Refurbishment Task of the Enhanced Utilization of Isotope Facilities project (Project Identification Code 2005230) funded by the American Recovery and Reinvestment Act of 2009. The goal of this project is to recover the capability to produce 4-5 curium targets for the irradiation period starting with HFIR cycle 427, currently scheduled to begin 2/17/10. Assuming success, the equipment would then be used to fabricate 6-7 additional targets to hold for the next irradiation campaign specified by the program. Specific objectives are the return to functionality of the Cubicle 3 Pellet Fabrication Line; Cubicle 2 Target Assembly equipment; and Cubicle 1 Target Inspection and Final Assembly system.

  15. Sun light European Project

    NASA Astrophysics Data System (ADS)

    Soubielle, Marie-Laure

    2015-04-01

    2015 has been declared the year of light. Sunlight plays a major role in the world. From the sunbeams that heat our planet and feed our plants to the optical analysis of the sun or the modern use of sun particles in technologies, sunlight is everywhere and it is vital. This project aims to understand better the light of the Sun in a variety of fields. The experiments are carried out by students aged 15 to 20 in order to share their discoveries with Italian students from primary and secondary schools. The experiments will also be presented to a group of Danish students visiting our school in January. All experiments are carried out in English and involve teams of teachers. This project is 3 folds: part 1: Biological project = what are the mechanisms of photosynthesis? part 2: Optical project= what are the components of sunlight and how to use it? part 3: Technical project= how to use the energy of sunlight for modern devices? Photosynthesis project Biology and English Context:Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can later fuel the organisms' activities. This chemical energy is stored in molecules which are synthesized from carbon dioxide and water. In most cases, oxygen is released as a waste product. Most plants perform photosynthesis. Photosynthesis maintains atmospheric oxygen levels and supplies all of the organic compounds and most of the energy necessary for life on Earth. Outcome: Our project consists in understanding the various steps of photosynthesis. Students will shoot a DVD of the experiments presenting the equipments required, the steps of the experiments and the results they have obtained for a better understanding of photosynthesis Digital pen project Electricity, Optics and English Context: Sunlight is a complex source of light based on white light that can be decomposed to explain light radiations or colours. This light is a precious source to create

  16. NAESA Augmentation Pilot Project

    NASA Technical Reports Server (NTRS)

    Hoover, John J.

    1998-01-01

    This project was one project within the Native American Earth and Space Academy (NAESA). NAESA is a national initiative comprised of several organizations that support programs which focus on 1) enhancing the technological, scientific and pedagogical skills of K-14 teachers who instruct Native Americans, 2) enhancing the understanding and applications of science, technology, and engineering of college-bound Native Americans and teaching them general college "survival skills" (e.g., test taking, time management, study habits), 3) enhancing the scientific and pedagogical skills of the faculty of tribally-controllcd colleges and community colleges with large Native American enrollments, and 4) strengthening the critical relationships between students, their parents, tribal elders, and their communities. This Augmentation Pilot Project focused on the areas of community-school alliances and intemet technology use in teaching and learning and daily living addressing five major objectives.

  17. The Eclipse Project

    NASA Technical Reports Server (NTRS)

    Tucker, Tom; Launius, Roger (Technical Monitor)

    2000-01-01

    The Eclipse Project by Tom Tucker provides a readable narrative and a number of documents that record an important flight research effort at NASA's Dryden Flight Research Center. Carried out by Kelly Space and Technology, Inc., in partnership with the Air Force and Dryden at Edwards Air Force Base in the Mojave Desert of California, this project tested and gathered data about a potential newer and less expensive way to launch satellites into space. Whether the new technology comes into actual use will depend on funding, market forces, and other factors at least partly beyond the control of the participants in the project. This is a familiar situation in the history of flight research.

  18. Enhanced project management tool

    NASA Technical Reports Server (NTRS)

    Maluf, David A. (Inventor); Hsu, Chen-Jung (Inventor); Patel, Hemil N. (Inventor); Moh Hashim, Jairon C. (Inventor); Tran, Khai Peter B. (Inventor)

    2012-01-01

    A system for managing a project that includes multiple tasks and a plurality of workers. Input information includes characterizations based upon a human model, a team model and a product model. Periodic reports, such as one or more of a monthly report, a task plan report, a schedule report, a budget report and a risk management report, are generated and made available for display or further analysis or collection into a customized report template. An extensible database allows searching for information based upon context and upon content. Seven different types of project risks are addressed, including non-availability of required skill mix of workers. The system can be configured to exchange data and results with corresponding portions of similar project analyses, and to provide user-specific access to specified information.

  19. Project ACHIEVE final report

    SciTech Connect

    1997-06-13

    Project ACHIEVE was a math/science academic enhancement program aimed at first year high school Hispanic American students. Four high schools -- two in El Paso, Texas and two in Bakersfield, California -- participated in this Department of Energy-funded program during the spring and summer of 1996. Over 50 students, many of whom felt they were facing a nightmare future, were given the opportunity to work closely with personal computers and software, sophisticated calculators, and computer-based laboratories -- an experience which their regular academic curriculum did not provide. Math and science projects, exercises, and experiments were completed that emphasized independent and creative applications of scientific and mathematical theories to real world problems. The most important outcome was the exposure Project ACHIEVE provided to students concerning the college and technical-field career possibilities available to them.

  20. Breckinridge Project, initial effort

    SciTech Connect

    None, None

    1982-09-01

    Report III, Volume 1 contains those specifications numbered A through J, as follows: General Specifications (A); Specifications for Pressure Vessels (C); Specifications for Tanks (D); Specifications for Exchangers (E); Specifications for Fired Heaters (F); Specifications for Pumps and Drivers (G); and Specifications for Instrumentation (J). The standard specifications of Bechtel Petroleum Incorporated have been amended as necessary to reflect the specific requirements of the Breckinridge Project, and the more stringent specifications of Ashland Synthetic Fuels, Inc. These standard specifications are available to the Initial Effort (Phase Zero) work performed by all contractors and subcontractors. Report III, Volume 1 also contains the unique specifications prepared for Plants 8, 15, and 27. These specifications will be substantially reviewed during Phase I of the project, and modified as necessary for use during the engineering, procurement, and construction of this project.

  1. Brazilian Eratosthenes Project

    NASA Astrophysics Data System (ADS)

    Langhi, R.; Vilaça, J.

    2014-10-01

    The objective of Brazilian Eratosthenes Project is the development and application of teaching training actions according the ``docent autonomy" concept to basic Astronomy Education. Argentina coordinates the project in South America, but Brazil works in this project since 2010 with the theme ``Projeto Eratóstenes Brasil" in the homepage: http://sites.google.com/site/projetoerato. Two schools measure a sticks shadow and communicate their results. After, they calculate an average radius of Earth. The stick (gnomon) should stay in vertical position in the leveled ground. Since 2010, the project received hundreds of Brazilian schools with different experiments that were constructed with autonomy, because our site doesn't show some itinerary pre-ready to elaborate the experiments. To collect data for our research, we will use interviews via Skype with the teachers. These data are useful to researches about Science Education area and the Teaching Formation. Teaching professional practice could change and we see modifications in the teachers work, what depends of their realities and context. This project intents to respect the docent autonomy. This autonomy to responsible modifications during continued formation is called ``activist formative model" according Langhi & Nardi (Educação em Astronomia: repensando a formação de professores. São Paulo: Escrituras Editora, 2012). This project discusses about researches in Astronomy Education - still extreme rare in Brazil, when we compare with other areas in Science Education. We believe that actions like this could motivate the students to learn more Astronomy. Furthermore, this national action can be a rich source of data to investigations about teaching formation and scientific divulgation.

  2. Student's Microsatellite Project

    NASA Astrophysics Data System (ADS)

    Zelentsov, Victor; Kopik, Anatoliy; Karpenko, Stanislav; Mayorova, Victoria

    2002-01-01

    Nowadays BMSTU Youth space center carries on development of the microsatellite project. The project is based on principles of students direct involvement on all stages of development and maintenance of the satellite. The group of students was organized within the university with purpose of coordination of work at the program. Project current condition The work on creation of an experimental model of the micro satellite is performed. The aim is to define the structure and parameters of on-board devices (mass-overall dimensions characteristics, energy consumption and so on). developed. According to the simplified model an active stabilization system (three orthogonal electro-magnetic coils) and orientation characterization system (sunlight detector and magnitometer) are included in OCS structure. most suitable battery storage, power-supply controlling system. Student micro-satellite program goals 1.Scientific Information gaining in the field of Earth study- using perspective research methods. Studying of new devices behavior in space conditions. 2. Educative a. Students derive real experience of projecting, building of a spacecraft from the point of view of an experimenter, a constructor and a researcher. b. Organization of student's cooperation with key men of aerospace industry and other branches. c. Brainpower and material base preparation for micro-satellite systems' development. d. Attraction of youth interest to the topic, by: - Students' and pupils' groups attraction and involvement in experiments conduction and results processing. - Seminars and lections devoted to Earth study from the space organization - Specific scientific data distribution over World Wide Web. 3. International With purpose of program expansion, the developers' group looks to start of an international project. Within the project new experiments conduction and scientific information exchange are expected. 4. Status Bauman Moscow State Technical University's status improvement in the field

  3. Managemant of NASA's major projects

    NASA Technical Reports Server (NTRS)

    James, L. B.

    1973-01-01

    Approaches used to manage major projects are studied and the existing documents on NASA management are reviewed. The work consists of: (1) the project manager's role, (2) request for proposal, (3) project plan, (4) management information system, (5) project organizational thinking, (6) management disciplines, (7) important decisions, and (8) low cost approach.

  4. Perspective Projection Invariants,

    DTIC Science & Technology

    1986-02-01

    ORGANIZATION NAME ANC ADDRESS 10. PROGRAM ELEMENT. PROJECT. TASK Artificial Inteligence Laboratory AREA & WORK UNIT NUMBERSO 545 Technology Square dCambridge...AD-AI67 793 PERSPECTIVE PROJECTION INVARIANTS(U) MASSACHUSETTS INST 1/1~ OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB VERRI ET AL, FEB 86 AI-M-832...0R020I4 661 SEC R TVC PAGE fjSr .W IlIII UI A 8 gT@OFTNS21 07 1 MASSACHUSETTS INSTITUTE OF TECHNOLOGY ARTIFICIAL INTELLIGENCE LABORATORY and CENTER

  5. Apollo - FIRE Project

    NASA Technical Reports Server (NTRS)

    1963-01-01

    Schematic drawing of Project FIRE Velocity Package. This was the design of a package used for flight tests with the Atlas rockets. Project FIRE (Flight Investigation Reentry Environment) studied the effects of reentry heating on spacecraft materials. It involved both wind tunnel and flight tests, although the majority were tests with Atlas rockets and recoverable reentry packages. These flight tests took place at Cape Canaveral in Florida. Wind tunnel tests were made in several Langley tunnels including the Unitary Plan Wind Tunnel, the 8-foot High-Temperature Tunnel and the 9x6-Foot Thermal Structures Tunnel.

  6. Apollo - Project FIRE

    NASA Technical Reports Server (NTRS)

    1962-01-01

    Test of Project FIRE model in Unitary Plan Wind Tunnel. Project FIRE (Flight Investigation Reentry Environment) studied the effects of reentry heating on spacecraft materials. It involved both wind tunnel and flight tests, although the majority were tests with Atlas rockets and recoverable reentry packages. These flight tests took place at Cape Canaveral in Florida. Wind tunnel tests were made in several Langley tunnels including the Unitary Plan Wind Tunnel, the 8-foot High-Temperature Tunnel and the 9x6-Foot Thermal Structures Tunnel.

  7. Apollo - Project FIRE

    NASA Technical Reports Server (NTRS)

    1962-01-01

    Researcher checks model of Project Fire Reentry package to be tested in Unitary Plan Wind Tunnel. Project FIRE (Flight Investigation Reentry Environment) studied the effects of reentry heating on spacecraft materials. It involved both wind tunnel and flight tests, although the majority were tests with Atlas rockets and recoverable reentry packages. These flight tests took place at Cape Canaveral in Florida. Wind tunnel tests were made in several Langley tunnels including the Unitary Plan Wind Tunnel, the 8-foot High-Temperature Tunnel and the 9x6-Foot Thermal Structures Tunnel.

  8. Apollo - Project Fire

    NASA Technical Reports Server (NTRS)

    1964-01-01

    60-foot sphere used during flight tests for Project FIRE. (Shot #2): Project FIRE (Flight Investigation Reentry Environment) studied the effects of reentry heating on spacecraft materials. It involved both wind tunnel and flight tests, although the majority were tests with Atlas rockets and recoverable reentry packages. These flight tests took place at Cape Canaveral in Florida. Wind tunnel tests were made in several Langley tunnels including the Unitary Plan Wind Tunnel, the 8-foot High-Temperature Tunnel and the 9- x 6-Foot Thermal Structures Tunnel.

  9. Project LITE Spectroscopy

    NASA Astrophysics Data System (ADS)

    Weeks, E.; Brecher, K.; Carr, P.; Garik, P.

    2003-12-01

    Spectroscopy is one of the most important tools used by astronomers to disentangle information about the universe. However, it is one of the most challenging subjects in undergraduate astronomy courses. Among the most difficult concepts for students to master are Kirchhoff's laws, blackbody radiation, the Stefan-Boltzmann law, Wien's law, the nature and causes of emission and absorption lines, and the relation of spectra to the underlying astronomical and physical processes producing them. Students often seem baffled by the connection between a spectrum seen visually as a color band and the same spectrum plotted graphically as intensity versus wavelength or frequency. Project LITE (Light Inquiry Through Experiments) is a software, curriculum, and materials development project at Boston University. As part of the project, we are currently developing a suite of spectroscopic tools for astronomy education. We are also assessing their effectiveness in improving conceptual understanding of spectroscopic phenomena by astronomy students at the undergraduate level. The spectroscopy component of Project LITE includes take-home laboratory materials and experiments, which are integrated with web-based software. We have also developed a novel quantitative handheld binocular spectrometer (patent pending). Here we present an overview of the Project LITE homelab kits and curriculum, the Spectrum Explorer, and the Project LITE spectrometer. The homelab experiments and the Spectrum Explorer have been tested with students in a non-science majors introductory astronomy course as well as in a School of Education course for prospective elementary school science teachers. We present preliminary results of pre- and post-instruction surveys of student understanding of various spectral properties of light both from students who used the homelab activities and the Spectrum Explorer and those who did not. The Spectrum Explorer (along with many other applets about both the physical and

  10. Solar radiation measurement project

    NASA Technical Reports Server (NTRS)

    Ioup, J. W.

    1981-01-01

    The Xavier solar radiation measurement project and station are described. Measurements of the total solar radiation on a horizontal surface from an Eppley pyranometer were collected into computer data files. Total radiation in watt hours was converted from ten minute intervals to hourly intervals. Graphs of this total radiation data are included. A computer program in Fortran was written to calculate the total extraterrestrial radiation on a horizontal surface for each day of the month. Educational and social benefits of the project are cited.

  11. Biofuels: Project summaries

    SciTech Connect

    Not Available

    1994-07-01

    The US DOE, through the Biofuels Systems Division (BSD) is addressing the issues surrounding US vulnerability to petroleum supply. The BSD goal is to develop technologies that are competitive with fossil fuels, in both cost and environmental performance, by the end of the decade. This document contains summaries of ongoing research sponsored by the DOE BSD. A summary sheet is presented for each project funded or in existence during FY 1993. Each summary sheet contains and account of project funding, objectives, accomplishments and current status, and significant publications.

  12. Solar Dish Project

    SciTech Connect

    Robert F. Boehm

    2004-06-06

    (Original wording, now somewhat outdated.) The Nevada Solar Dish Project is designed to deploy at least 1 MW of dish-based, field validation power generation systems in a mini-power plant near Las Vegas, Nevada, as a transitional precursor to the full commercialization of the technology. This will occur over a period of about three years, from 2001 through 2004. The statement of work defines activities that the University of Nevada Las Vegas (UNLV) will provide by establishing a test site for two dish/Stirling systems on the UNLV campus and providing operation, test and training, and education in support of the project.

  13. Project Summary Report

    NASA Technical Reports Server (NTRS)

    Upchurch, Christopher

    2011-01-01

    The project, being the development of resource management applications, consisted entirely of my own effort. From deliverable requirements provided by my mentor, and some functional requirement additions generated through design reviews, It was my responsibility to implement the requested features as well as possible, given the resources available. For the most part development work consisted of database programming and functional testing using real resource data. Additional projects I worked on included some firing room console training, configuring the new NE-A microcontroller development lab network, mentoring high school CubeSat students, and managing the NE interns' component of the mentor appreciation ceremony.

  14. Human Genome Project

    SciTech Connect

    Block, S.; Cornwall, J.; Dally, W.; Dyson, F.; Fortson, N.; Joyce, G.; Kimble, H. J.; Lewis, N.; Max, C.; Prince, T.; Schwitters, R.; Weinberger, P.; Woodin, W. H.

    1998-01-04

    The study reviews Department of Energy supported aspects of the United States Human Genome Project, the joint National Institutes of Health/Department of Energy program to characterize all human genetic material, to discover the set of human genes, and to render them accessible for further biological study. The study concentrates on issues of technology, quality assurance/control, and informatics relevant to current effort on the genome project and needs beyond it. Recommendations are presented on areas of the genome program that are of particular interest to and supported by the Department of Energy.

  15. CONNECTICUT BIOFUELS TECHNOLOGY PROJECT

    SciTech Connect

    BARTONE, ERIK

    2010-09-28

    DBS Energy Inc. (“DBS”) intends on using the Connecticut Biofuels Technology Project for the purpose of developing a small-scale electric generating systems that are located on a distributed basis and utilize biodiesel as its principle fuel source. This project will include research and analysis on the quality and applied use of biodiesel for use in electricity production, 2) develop dispatch center for testing and analysis of the reliability of dispatching remote generators operating on a blend of biodiesel and traditional fossil fuels, and 3) analysis and engineering research on fuel storage options for biodiesel of fuels for electric generation.

  16. Developpement et validation de schemas de calcul a double niveau pour les reacteurs a eau sous pression

    NASA Astrophysics Data System (ADS)

    Vallerent, Remi Maurice Jean

    Nuclear chain reaction is the driving force behind nuclear power reactors. The knowledge of the neutron flux within the reactor, which maintains the chain reaction, is required for its good working. The neutron flux may be evaluated by solving the neutron transport equation, also called Boltzmann equation. Except for very simple cases, this equation does not admit analytical solutions. Moreover, current computer capacities do not allow to solve it numerically on the whole three dimensional reactor geometry. Neutron flux calculation is therefore divided into several steps. Each step uses its own geometry and own models to solve this equation. Such a set of calculation is called a calculation scheme, and leads to the evaluation of the neutron flux given the reactor geometry, media composition and the isotopic cross sections. The purpose of this project is to realize a calculation scheme that may be used in industry, which imposes to have limited discrepancies with reference calculation and low calculation times. Two codes are used in this project: the lattice code DRAGON and the full-core code COCAGNE. The first step of this project is the presentation of a two level calculation scheme for the lattice code. It presents several options in order to get more precise results, as well as the validation of these options. Particularly, impacts of a transport-transport equivalence and an all media isotopic depletion in the pins are discussed. The second step of the project is the coupling between codes DRAGON and COCAGNE. This coupling is validated with a calculation on a cluster of nine assemblies. At last, elements of validation of the calculation scheme are presented for a full core calculation.

  17. Calcul par simulation des paramètres dosimétriques pour le noyau cellulaire après irradiation α in vitro

    NASA Astrophysics Data System (ADS)

    Le Foll, L.; Bailly, I.; Fritsch, P.

    1998-04-01

    Determination of absorbed dose in biological targets after high LET α particules irradiation needs heavy calculations. A softwave has been developed in order to allow everyone to calculate hit probability and absorbed dose. It is particularly adapted to the study of cell cultures irradiated with electrodeposited source or α-beam accelerator. It is based first, on a random generator of α-track homogeneously distributed in 4π, second, on the evaluation of energy loss in the different media along the track and then on a statistical analysis of the results. This method is accurate and low time consuming. The target is either modelised by an ellipsoid or represented by its 3D shape recorded using confocal microscopy. Des calculs dosimétriques complexes sont nécessaires pour l'évaluation des doses délivrées dans des cibles biologiques après irradiation par des particules α de haut TEL. Un logiciel a été développé pour rendre facilement accessible le calcul de la probabilité pour atteindre la cible et de la dose absorbée. il est particulièrement adapté à l'étude des cultures cellulaires irradiées par des sources électrodéposées de radionucléides ou des accélérateurs de particules. Il repose sur un générateur de traces aléatoires, sur une approximation de la perte d'énergie dans les différents milieux traversés et sur une exploitation statistique des résultats obtenus. Cette méthode s'avère précise et rapide. La cible est modélisée par un ellipsoïde ou représentée par son image 3D obtenue en microscopie confocale.

  18. Les déterminants du statut “perdu de vue” chez les patients pris en charge pour cancer au Maroc: situation avant le Plan Cancer

    PubMed Central

    Najdi, Adil; Berraho, Mohamed; Bendahhou, Karima; Obtel, Majdouline; Zidouh, Ahmed; Errihani, Hassan; Nejjari, Chakib

    2014-01-01

    Introduction Le cancer au Maroc représente un problème majeur de santé publique, sa prise en charge doit être globale, active et complète pour tous les patients. L'objectif de ce travail était d'estimer la fréquence des perdus de vue « PDV » en oncologie au Maroc durant la première année de suivi et de déterminer les facteurs associés à ce problème. Méthodes Par une étude rétrospective portant sur 2854 dossiers de malades hospitalisés dans les trois principaux centres d'oncologie au Maroc depuis janvier 2003 jusqu’à juin 2007 et concernant les cinq principales localisations de cancer au Maroc, nous avons cherché la date des dernières nouvelles des patients ayant un recul de 18 mois minimum afin de déterminer le statut de ces malades après un an de suivi. Résultats La moyenne d’âge était de 52±14 ans, une proportion féminine de 63%, les sujets actifs constituaient 28%, les mariés 71%, les analphabètes 51%, 70% des patients habitaient en milieu urbain et seulement 11% des malades disposaient d'une couverture sociale. La localisation cancéreuse la plus fréquente était le poumon (23,8%) suivie du colon-rectum (23,5%) puis le col (21,9%), le sein (20,4%) et les lymphomes (10,4%). Le taux des «PDV» à un an de suivi était de 48%, ce statut était significativement lié au sexe, à l’âge, au NSE et au statut matrimonial. Sur le plan médical, le statut «PDV» était lié à la localisation du cancer, au stade de diagnostic et au type de traitement reçu. Conclusion Notre étude a mis en évidence la grande ampleur du problème des PDV en cancérologie au Maroc ainsi que ces déterminants. Ces résultats incitent tous les acteurs dans le domaine de la cancérologie à collaborer ensemble pour prendre les mesures qui s'imposent pour y pallier PMID:25400850

  19. The Requirements for an Emergency Breathing System (EBS) in Over-Water Helicopter and Fixed Wing Aircraft Operations. Specification d’un Respirateur de Sauvetage pour Aeronefs a Voilure Fixe et a Voilure Tournante en Mission de Survol Maritime.

    DTIC Science & Technology

    2001-05-01

    comments and observations came from the subject questionnaire used in the trial. These seem just as pertinent 25 years later for operators...Celles-ci pourront éventuellement être obtenues sous forme de copie papier. Pour de plus amples renseignements concernant l’achat de ces ouvrages

  20. A Correlational Study Assessing the Relationships among Information Technology Project Complexity, Project Complication, and Project Success

    ERIC Educational Resources Information Center

    Williamson, David J.

    2011-01-01

    The specific problem addressed in this study was the low success rate of information technology (IT) projects in the U.S. Due to the abstract nature and inherent complexity of software development, IT projects are among the most complex projects encountered. Most existing schools of project management theory are based on the rational systems…

  1. A Semester Ecology Project

    ERIC Educational Resources Information Center

    Baskett, Russell C.

    1969-01-01

    Describes a semester-long study of microorganisms in an aquarium as performed by a beginning microbiology class. Gives results and conclusions drawn by students utilizing many ecological principles to interpret the results. Similar projects could be used from beginning high school through advanced college biology. (EB)

  2. The Legacy Project

    ERIC Educational Resources Information Center

    Moye, Johnny J.

    2012-01-01

    This article is the first in a series of articles entitled "The Legacy Project." It focuses on the lives and actions of leaders who have forged technology engineering education profession into what it is today. Members of the profession owe a debt of gratitude to these leaders. One simple way to demonstrate that gratitude is to recognize them and…

  3. Elder Abuse Awareness Project.

    ERIC Educational Resources Information Center

    Doyle, Kathleen; Morrow, Marilyn J.

    1985-01-01

    The Elder Abuse Awareness Project was undertaken: (1) to determine the incidence of abuse and neglect in seven Illinois counties; and (2) to develop, produce, and distribute educational materials on elder abuse for the service provider and for senior citizens. Results are presented and discussed. (MT)

  4. Elder Abuse Awareness Project.

    ERIC Educational Resources Information Center

    Morrow, Marilyn J.; Doyle, Kathleen

    The Elder Abuse Awareness Project was developed to determine the incidence of abuse and neglect of elderly people in several rural counties in central Illinois. A primary purpose of the study was to survey service providers as to their actual encounters with elder abuse and neglect. Each provider was asked about warning signs or cues that were…

  5. The EPA Liver Project

    EPA Science Inventory

    The v-Liver is part of a broader EPA effort on Virtual Tissues (VT) aimed at reducing the magnitude and spectrum of animal testing by integrative in silico and in vitro models, which recapitulate the properties of intact organs. The other VT projects include the Virtual Embryo (...

  6. IPAD project overview

    NASA Technical Reports Server (NTRS)

    Fulton, R. E.

    1980-01-01

    To respond to national needs for improved productivity in engineering design and manufacturing, a NASA supported joint industry/government project is underway denoted Integrated Programs for Aerospace-Vehicle Design (IPAD). The objective is to improve engineering productivity through better use of computer technology. It focuses on development of technology and associated software for integrated company-wide management of engineering information. The project has been underway since 1976 under the guidance of an Industry Technical Advisory Board (ITAB) composed of representatives of major engineering and computer companies and in close collaboration with the Air Force Integrated Computer-Aided Manufacturing (ICAM) program. Results to date on the IPAD project include an in-depth documentation of a representative design process for a large engineering project, the definition and design of computer-aided design software needed to support that process, and the release of prototype software to integrate selected design functions. Ongoing work concentrates on development of prototype software to manage engineering information, and initial software is nearing release.

  7. Project Self: Beyond Resilience.

    ERIC Educational Resources Information Center

    Hampson, June E.; Rahman, Muhammad A.; Brown, Bobbi, Jr.; Taylor, Maryellen E.; Donaldson, Carl J., Jr.

    1998-01-01

    Describes the implementation and results of Project Self, an African-American cultural identity program, in three classes of fourth graders in the Jersey City public schools. The curriculum covers cultural inheritance, interrelations among social structures (education, politics, law, religion, economics) of a culture, and problem solving for self,…

  8. WSTF electrical arc projects

    NASA Astrophysics Data System (ADS)

    Linley, Larry

    1994-09-01

    The objectives of these projects include the following: validate method used to screen wire insulation with arc tracking characteristics; determine damage resistance to arc as a function of source voltage and insulation thickness; investigate propagation characteristics of Kapton at low voltages; and investigate pyrolytic properties of polyimide insulated (Kapton) wire for low voltage (less than 35 VDC) applications. Supporting diagrams and tables are presented.

  9. The ARL Microform Project.

    ERIC Educational Resources Information Center

    Association of Research Libraries, Washington, DC.

    In 1980, a study was conducted for the Association of Research Libraries (ARL) by Information Systems Consultants (ISCI) which led to the establishment of the ARL Microform Project. Based on a three-part survey, to which a total of 848 academic, government, public, and special libraries responded, the ISCI study covered: (1) general microform…

  10. The History Computerization Project.

    ERIC Educational Resources Information Center

    Clark, David L.

    1992-01-01

    Description of the History Computerization Project, which is being developed for the exchange of information between researchers, librarians, archivists, museum curators, preservation groups, and historical societies, focuses on workshops that teach the use of computer database management for historical cataloging and research. (LRW)

  11. Science in Schools Project

    NASA Astrophysics Data System (ADS)

    Waugh, Mike

    As part of a program to increase learning and engagement in science classes 124 Victorian schools are trialing a best practice teaching model. The Science in Schools Research Project is a DEET funded project under the Science in Schools Strategy, developed in response to recent research and policy decisions at national and state levels through which literacy, numeracy and science have been identified as key priorities for learning. This major science research project aims to identify, develop and trial best practice in Science teaching and learning. The Department will then be able to provide clear advice to Victoria's schools that can be adopted and sustained to: * enhance teaching and learning of Science * enhance student learning outcomes in Science at all year levels * increase student access to, and participation in Science learning from Prep through to Year 10, and hence in the VCE as well. The nature of the SiS program will be detailed with specific reference to the innovative programs in solar model cars, robotics and environmental science developed at Forest Hill College in response to this project.

  12. The History Research Project

    ERIC Educational Resources Information Center

    Estes, Matt; Brady, Ann

    2005-01-01

    Matt Estes, a social studies teacher, mentions the main instructional goals for his students like understanding the importance of proper citation and attribution presenting the Machiavelli project that deals with the skills he wants his students to develop and the course material that must be covered. In addition, Ann Brady, a library media…

  13. The Napoleon Project.

    ERIC Educational Resources Information Center

    Bassett, Jonathan

    1995-01-01

    Describes a high school history class project designed to simultaneously teach students about Napoleon and introduce them to the practice of historical inquiry. Students viewed four data sets reflecting various aspects of Napoleon's life (e.g. military victories, domestic policy). Worksheets and writing assignments reiterated the importance of…

  14. Icosahedrons: A Multifaceted Project.

    ERIC Educational Resources Information Center

    Strazdin, Ray

    2000-01-01

    Discusses a project focusing on icosahedrons that combines geometry, structure, graphic design, animation, motion, and mechanical and freehand drawing with ancient Greek catapult mechanics. Includes directions on how to both construct a template and develop the pattern for the icosahedrons. (CMK)

  15. Project ANNA Student Survey.

    ERIC Educational Resources Information Center

    Boyd, Marjorie, Comp.; Hena, Jim, Comp.

    In reviewing the Alaskan Native Needs Assessment (Project ANNA), it was determined that one of the most important educational decision-makers was the student. This concern reflected the belief that in Alaskan Native communities, students and their desires are a potent factor in deciding which option (boarding school, boarding home program, state…

  16. AgrAbility Project

    MedlinePlus

    ... It’s About Hope AgrAbility on Twitter AgrAbility on Facebook AgrAbility on You Tube AgrAbility… It’s About Hope ... summary report available... AgrAbility Harvest Get a copy Facebook Posts National AgrAbility Project 12 hours ago Good ...

  17. The Wish Tree Project

    ERIC Educational Resources Information Center

    Brooks, Sarah DeWitt

    2010-01-01

    This article describes the author's experience in implementing a Wish Tree project in her school in an effort to bring the school community together with a positive art-making experience during a potentially stressful time. The concept of a wish tree is simple: plant a tree; provide tags and pencils for writing wishes; and encourage everyone to…

  18. Project OUTREACH Evaluation.

    ERIC Educational Resources Information Center

    Hollis, Patricia A.; Newton, Josephine K.

    Described is a 4-week summer workshop, Project OUTREACH, designed to train Head Start personnel in the knowledge and skills necessary to identify handicapped or potentially handicapped children and to develop specific teaching strategies for the preschool handicapped child. It is explained that a unique aspect of the workshop was the coordination…

  19. The Visual Identity Project

    ERIC Educational Resources Information Center

    Tennant-Gadd, Laurie; Sansone, Kristina Lamour

    2008-01-01

    Identity is the focus of the middle-school visual arts program at Cambridge Friends School (CFS) in Cambridge, Massachusetts. Sixth graders enter the middle school and design a personal logo as their first major project in the art studio. The logo becomes a way for students to introduce themselves to their teachers and to represent who they are…

  20. ACCESS Project: Final Report

    SciTech Connect

    Weller, Heiko

    2015-04-01

    The ACCESS project addressed the development, testing, and demonstration of the proposed advanced technologies and the associated emission and fuel economy improvement at an engine dynamometer and on a full-scale vehicle. Improve fuel economy by 25% with minimum performance penalties Achieve SULEV level emissions with gasoline Demonstrate multi-mode combustion engine management system