Materials Literature
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Spin-transfer torque (STT) provides key mechanisms for current-induced phenomena in ferromagnets. While it is widely accepted that STT involves both adiabatic and non-adiabatic contributions, their underlying physics and range of validity are quite controversial. By computing microscopically the response of conduction…
During the synthesis of ultra-thin materials with hexagonal lattice structure Stone-Wales (SW) type of defects are quite likely to be formed and the existence of such topological defects in the graphene-like structures results in dramatical changes of their electronic and mechanical properties. Here we investigate the…
Water is commonly associated with life. This substance affects the living beings in countless aspects and length scales, ranging from molecular biology to climatology. Water exhibits a long series of anomalous behaviors. These anomalies can be rationalized as a consequence of a second critical point in the supercooled…
Abstract Some half a million packages containing radioactive materials are transported to, from and within the UK annually. Accidents and incidents involving these shipments are rare. However, there is always the potential for such an event, which could lead to a release of the contents of a package or an increase in…
AbstractThe MX packages developed by COGEMA Logistics according to TS-R-1 requirements will replace older Current packaging to transport fresh pressurised water reactor (PWR) and boiling water reactor (BWR) mixed oxide (MOX) fuels in Europe. Two types of package have been developed: (1) MX8 with a capacity of eight 17…
Cette these vise a comprendre l’effet des dynamiques des micelles de copolymeres sur leurs proprietes rheologiques. En effet les copolymeres amphiphiles peuvent s'auto-assembler dans l’eau pour former diverses microstructures micellaires spheriques, cylindriques ou lamellaires. Leur dynamique est un parametre crucial…
The reexamination argument on nuclear power has arisen after the Fukushima accident. When nuclear power generation has been stopped, it is forced however, to depend on thermal power generation. In that case, the two serious problems of a jump of fuel cost and of global warming issue, that is CO2 emission issue, will b…
Transient absorption of 1,3,3-Trimethylindolino-β-naphtopyrylospiran (SPna) was measured by using 266-nm laser flash photolysis technique in the presence of cyclodextrins (CDs) in water solvent. Ionization of SPna occurred within the laser flash (5 ns) to give water solvated electron. The electron was generated by two…
Formation and decay of biphenyl (BP) radical cation and solvated electron during resonant two-photon ionization (TPI) of BP in the absence and presence of cyclodextrins were studied by transient absorption measurement using 266-nm laser flash photolysis technique. Ionization of BP occurred within the time interval of…
Dans les travaux de cette thèse, des fibres extraites de la plante de chanvre et des agro-composites polypropylène renforcés par des fibres courtes ont été étudiés. Des essais de caractérisations expérimentales alliés à une modélisation numérique ont permis de comprendre et de déterminer leurs comportements mécaniques…
Les voies de signalisation exercent à l’échelle moléculaire un contrôle spatiotemporel précis sur de nombreux processus cellulaires. Par exemple, à l’échelle d’un organisme en développement, ces réseaux complexes d’interaction opèrent entre différents groupes cellulaires et établissent une régulation fine, dynamique e…
Dry gauze method stipulated in JIS is to measure the amount of airborne sea salt particles. JIS dry gauze method takes a lot of time and work during preparation and analysis. Considering alternative methods of JIS dry gauze method, in this study we have developed several simple methods for airborne sea salt particles…
A glicose é um açúcar redutor importante na dieta humana, sendo abundante em diversos alimentos, como sucos de frutas, mel, iogurtes e refrigerantes e pode ser facilmente ingerido e metabolizado. Ela fornece a energia para o corpo humano, entretanto, diversos desequilíbrios metabólicos estão associados com variações n…
碩士 委員-陳福安 委員-何玉鈴 委員-顏焜熒 指導教授-梁文俐 指導教授-王靜瓊
[ANGLÈS] During the last 25 years nanotechnology has become a transvers field either in research and everyday's live. In this work we present a method which can control temperature down to nanoscale thanks to plasmonic properties of gold nanoparticles. Moreover, we open a new field named "thermal engineering" which ha…
[ANGLÈS] An experimental set-up to measure plasmon-enhanced Circular Dichroism (CD) on Planar Chiral Metamaterials (PCM) has been designed, built and tested. PCMs, made of two-dimensional arrays of metallic nano-particles, have been fabricated and their geometry optimized to maximise their CD response. We carried out…
Dans cette thèse, on étudie des problèmes liés à la vérification de systèmes (logiciels). On s’intéresseplus particulièrement à la conception sûre de procédures de décision utilisées en vérification. De plus, onconsidère également un problème de modularité pour un langage de modélisation utilisé dans la plateformede v…
This dissertation has focused on three main topics: (1) Synthesis and characterization of ZnO:Cl NWs; (2) Hetero and homo nanostructures based on ZnO:Cl NWs for efficient PEC cells; (3) Photovoltaic performance of DSCs based on ZnO NWs. \n \n(1) Vertically aligned single-crystal and chlorine-doped ZnO NWs can be grown…
AbstractThe International Atomic Energy Agency has the responsibility to develop standards of safety for the transport of radioactive material, that serve as the model for International modal regulatory documents and for domestic regulations throughout the world. This paper reviews the various legal instruments that a…
Abstract A fissile package must be subjected to a fire test at 800°C for 30 min. For a package that contains enriched uranium hexafluoride (UF6), the temperature of the contents has to be kept below 121°C in order to avoid rupture of the 30B cylinder. A previous study on heat transfer mechanisms in an enriched UF6 pac…