Ce travail s’inscrit dans une tendance historiographique récente visant à mieux comprendre la « vocation industrielle (…) beaucoup trop souvent sous-estimée » du Sud-Ouest de la France. Il tente pour cela de reconstituer les trajectoires des activités textiles à l’œuvre dans le département des Basses-Pyrénées au cours de la période contemporaine, à partir de l'étude des entreprises et de leur environnement, des statistiques et discours sur l'industrialisation, et des « cycles de vie » des articles fabriqués et commercialisés. L’étude met d’une part en évidence l’importance, la structuration et la diversité des activités textiles : les Basses-Pyrénées se caractérisent en effet par la grande variété des fabrications, en renouvellement constant (tissage, bonneterie, confection), et s’imposent même comme le principal espace de production de certains articles à la diffusion internationale (bérets, linge basque, lainages des Pyrénées, sandales). Elles présentent en parallèle des filières complètes, parfois uniques dans le Sud-Ouest, pour différentes matières premières (coton, lin, laine, jute).D’autre part, le maintien sur la longue durée des organisations productives diffuses, le recours massif à l’énergie hydraulique et la domination de la petite entreprise familiale s’articulent avec l’adoption souvent rapide des innovations techniques et une forte capacité de reconversion de multiples centres industriels ruraux ou urbains.Enfin, bien que limitée par la concurrence des grandes régions industrielles françaises vis-à-vis desquelles elles peuvent apparaître comme périphériques, les trajectoires textiles des Basses-Pyrénées parviennent à s’inscrire dans différentes échelles, du local à l’international. Elles témoignent d’échanges techniques et l’élargissement du capitalisme familial s’inscrivent dans des logiques endogènes et exogènes. L’exploitation des opportunités régionales joue à ce titre un rôle prépondérant : proximité de l’Espagne, cohérence vestimentaire d’une vaste aire pyrénéenne, extension des débouchés par l’émigration et la demande touristique, exploitation de l’aura régionaliste du Béarn, du Pays Basque et des Pyrénées. La position excentrée des Basses-Pyrénées, tout en étant une source de marginalisation économique, est un facteur de dynamisme industriel certes limité mais solidement inscrit dans la longue durée. / This study comes within the scope of a recent historiographical trend to change perception of the industrialisation of the South-West of France which is often approached from the perspective of underdevelopment . It aims at reconstructing the « paths » of different textile industries in the Basses-Pyrénées / Pyrénées-Atlantiques from late 18th century to late 20th century, based on the study of produce, markets, producting organisations, firms, views and representations. The research points out the importance, structuring and the diversity of textile industries : complete industrial processes can be found in Basses-Pyrénées for several fibres (cotton, linen, wool, jute) and some products are produced and sold by millions (berets, sandals and, to a leaser extent, basque linen, wool of the Pyrénées...). The maintain of “soft” producting organisations, the massive use of hydraulic power and the domination of family businesses are also linked with fast technical changes and strong ability of industrial reconversion inside various industrial countries and small or middle-sized towns.In the end, these industrial “paths” reveal the economical integration of Basses-Pyrénées on different scales, from local to international, as regards raw material, markets or technical, or financial and human movements. The exploitation of regional opportunities plays a major role in the continuity of these textile industries : proximity of Spain, continuing consumption in the pyrenean area, emigration to America, tourism, regionalistic vogue for Bearn, Basque Country and Pyrénées.

This Diploma thesis occupies with design of hydraulic puller. In work are mentioned possible types of construction. Choice construction of puller is disposed with parameters: maximum pushing force 50 kN, speed of piston rod 0,05 m/s. This work also contains FEM analysis by computer programme I-DEAS. The work also occupies with design of fluid drive.

This diploma thesis deals with the mechanical proposal of hydraulic puller. Furthermore, it includes the detail design solutions. The project also includes the calculation of the hydraulic puller parameters: maximum pushing force is 60 kN, speed of movement is 0.1 m s-1. This work also contains of stress analysis FEM with I-DEAS software. Following part deals with the design of hydraulic circuit for driving puller. At the end of work there are options for replacements of hydraulic puller by mechanical systems.

The current model for electricity generation is based on power plants connected to the transmission network. This provides electricity to the distribution network and after that to the consumers. To ensure the security of the electrical network and prevent a blackout, the performance of every electricity generation unit connected to the network is quantified in grid codes. In the case of the French transmission system, the requirements regarding the performance are written in a document produced by the French Transmission System Operator (TSO). Various events with various configurations of connection to the network have to be simulated and the corresponding performance has to be evaluated. The aim of these simulations is to determine the stability of the generators and key elements, including the response time on the active power after events such as a short circuit.Taking into account the amount of generators connected to the transmission network, the need for optimization appears and is the purpose of this Master Thesis. To perform those simulations in an efficient way on all the generators owned by the main French electricity producer, EDF, this Master Thesis contributes with a tool called AuDySim coded with the softwares MATLAB and EUROSTAG. The implemented tool allows the user to configure an electricity generation unit before realizing all the simulations specified by the TSO and produces a report containing the results by means of curves and data. The simulations and the production of the report are achieved automatically to create a gain of time and resources.In order to validate the performance of the tool, two case studies are performed on different types of power plants. The two case studies analyzed present a hydraulic and a nuclear power plant. In the results the performance of each type of power plant is assessed focusing on the rotor angle stability of the machine and key elements, such as the voltage and the active power. These results lead to the conclusion that AuDySim fulfills its mission, by achieving automatically an analysis of the performance of an electrical generation unit and producing it in a report. / Den nuvarande elproduktionsmodellen baseras på kraftverk som är direktkopplade till stamnätet. Stamnätet i sin tur matar distributionsnätet som därefter levererar el till slutkonsumenterna. För att säkerställa stamnätets integritet samt säkerhet och undvika strömavbrott kvantifieras prestandan hos varje generator som är ansluten till det med hjälp av nätkoder. När det gäller det franska stamnätet skrivs prestandakraven i ett dokument som utfärdas av den franska transmissionssystemoperatören (TSO). Olika händelser med olika anslutningskonfigurationer måste simuleras där dess prestanda ska utvärderats. Syftet med dessa simuleringar är att identifiera stabiliteten vid varje elproduktionsenhet med bl. a. dess reaktionstid för den aktiva effekten efter kortslutningar.Med tanke på antalet generatorer som är anslutna till stamnätet framträder ett behov för överföringsoptimering vilket är syftet med detta examensarbete. För att utföra dessa simuleringar på ett effektivt sätt på alla generatorer som ägs av den ledande franska elproducenten, EDF, bidrar denna avhandling med ett verktyg som heter AuDySim kodat i mjukvarorna MATLAB och EUROSTAG. Verktyget gör det möjligt för användaren att konfigurera en elproduktionsenhet innan man utför alla simuleringar som specificeras av TSO:n och samtidigt producerar en rapport som innehåller grafisk- och data resultat. Både simuleringar och rapporten produceras automatiskt för att optimera en bearbetningstid och resursanvändning.För att validera verktygets prestanda utförs två fallstudier på olika typer av kraftverk. De två fallstudierna fokuserar på ett hydraulisk- respektive ett kärnkraftverk. I resultaten utvärderas prestanda för varje typ av kraftverk, med fokus på maskinens rotorvinkelstabilitet och andra viktiga faktorer, såsom spänning och aktiv effekt. Resultat leder till slutsatsen att AuDySim uppfyller sitt uppdrag genom att automatiskt analysera prestanda hos en elektrisk generationsenhet och presentera analysen i en rapport.

A breed-and-burn molten salt reactor (BBMSR) concept is proposed to address the Generation IV fuel cycle sustainability objective in a once-through cycle with low enrichment and no reprocessing. The BBMSR uses separate fuel and coolant molten salts, with the fuel contained in assemblies of individual tubes that can be shuffled and reclad periodically to enable high burnup. In this dual-salt configuration, the BBMSR may overcome several limitations of previous breed-and-burn (B$\&$B) designs to achieve high uranium utilisation with a simple, passively safe design. A central challenge in design of the BBMSR fuel is balancing the neutronic requirement of large fuel volume fraction for B$\&$B mode with the thermal-hydraulic requirements for safe and economically competitive reactor operation. Natural convection of liquid fuel within the tubes aids heat transfer to the coolant, and a systematic approach is developed to efficiently model this complex effect. Computational fluid dynamics modelling is performed to characterise the unique physics of the system and produce a new heat transfer correlation, which is used alongside established correlations in a numerical model. A design framework is built around this numerical model to iteratively search for the limiting power density of a given fuel and channel geometry, applying several defined temperature and operational constraints. It is found that the trade-offs between power density, core pressure drop, and pumping power are lessened by directing the flow of coolant downwards through the channel. Fuel configurations that satisfy both neutronic and thermal-hydraulic objectives are identified for natural, 5$\%$ enriched, and 20$\%$ enriched uranium feed fuel. B$\&$B operation is achievable in the natural and 5$\%$ enriched versions, with power densities of 73 W/cm$^3$ and 86 W/cm$^3$, and theoretical uranium utilisations of 300 $\mathrm{MWd/kgU_{NAT}}$ and 25.5 $\mathrm{MWd/kgU_{NAT}}$, respectively. Using 20$\%$ enriched feed fuel relaxes neutronic constraints so a wider range of fuel configurations can be considered, but there is a strong inverse correlation between power density and uranium utilisation. The fuel design study demonstrates the flexibility of the BBMSR concept to operate along a spectrum of modes ranging from high fuel utilisation at moderate power density using natural uranium feed fuel, to high power density and moderate utilisation using 20$\%$ uranium enrichment.