Search for dissertations about: "fuel tomography"
Showing result 21 - 25 of 32 swedish dissertations containing the words fuel tomography.
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21. Nondestructive Fission Gas Measurements by Means of Gamma Spectroscopy and Gamma Tomography
Abstract : There is a continuous need in the nuclear industry to characterize irradiated nuclear fuel rods and assemblies, both for fuel performance and for safeguards purposes, and consequently there are various destructive and nondestructive measurement techniques available to meet this need. Gamma spectroscopy is one such nondestructive technique, which has been extensively used for a variety of fuel characterization applications. READ MORE
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22. Optical Diagnostics of Reactive Flows : Application of 3D emission tomography and laser-based methods
Abstract : Nowadays, numerous specialized systems, ranging from electronics to energy production processes can be found both in science and industry. However due to their specialized nature they often exhibit high sensitivity to intrusive measurements, which can potentially perturb the sought-after characteristics or quantity and consequently compromise overall accuracy. READ MORE
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23. Atomic Scale Degradation of Zirconium Alloys for Nuclear Applications
Abstract : Due to their low thermal neutron capture cross-section, zirconium alloys are widely used in the nuclear industry as fuel cladding and for structural components. The lifetime of the fuel assemblies in the reactors is primarily dictated by the ability of the cladding to withstand oxidation and hydrogen pick-up from the coolant water and radiation damage induced by the neutron flux. READ MORE
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24. PET in Heart Failure - Methods and Applications
Abstract : Positron Emission Tomography (PET) permits regional myocardial perfusion, fibrosis and oxidative metabolism to be non-invasively quantified with radioactive tracers such as [15O]-water and [1-11C]-acetate. PET is an established research tool in congestive heart failure (CHF), a major cause of morbidity and mortality. READ MORE
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25. Development of a new generation of 12% Cr steels: Z-phase strengthened steels
Abstract : Fossil-fuel fired steam power plants provide more than 60% of the electricity generated worldwide, and account for about one third of the global CO2 emissions. The thermal efficiency of the steam power plants is limited by the maximum allowed steam temperature and pressure, which in turn are determined by the long-term corrosion and creep resistance of economically viable materials. READ MORE