Searched for: department:"Radiation%2C%5C+Radionuclides%5C+%26%5C+Reactors"
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Uyttenhove, W. (author)
This thesis provides a methodology and set-up of a reactivity monitoring tool for Accelerator-Driven Systems (ADS). The reactivity monitoring tool should guarantee the operation of an ADS at a safe margin from criticality. Robustness is assured in different aspects of the monitoring tool: the choice of the measurement techniques, the evaluation...
doctoral thesis 2016
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De Jong, M. (author)
Photovoltaic devices are a widely available, long lasting means of generating sustainable energy. Unfortunately, the integration of such devices into society is to date still limited. This is in part due to the much less than optimal efficiency of conversion of sunlight to electricity, but also by the physical limitations of integrating...
doctoral thesis 2015
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Shen, K. (author)
Nanostructured materials are featured by providing a variety of favourable electrical properties, as the reduced ion and electron transport paths enable significant enhancement on (de)intercalation rates and hence high power. For TiO2 anatase, nano-sizing results in a curved open cell voltage profile with a much shorter plateau region in...
doctoral thesis 2014
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Ten Kate, O.M. (author)
doctoral thesis 2014
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Wang, G. (author)
Amphiphilic di-block copolymers composed of poly(ethylene oxide-b-butadiene), abbreviated PEO-PB can self-assemble into polymer vesicles (polymersomes) when placed in aqueous solution, provided that the ratio of hydrophilic block to the total molecular mass is between 25 % and 45 %. These vesicles consist of an aqueous cavity surrounded by a...
doctoral thesis 2014
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Liu, B. (author)
The patients with the neuroendocrine tumours (liver, spleen, etc.) often need treatment by the Peptide Receptor Radionuclide Therapy with 177Lu. The amount of 177Lu activity in the body of patients has to be known accurately for assessment of the dosimetry and for evaluation of the effectiveness of the therapy. Whole-body activities at the given...
doctoral thesis 2013
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Alekhin, M.S. (author)
Scintillators are used for the detection of ionizing radiation. Despite decades of intensive search and numerous compounds discovered, there is still a need for materials with improved properties. Recently, several new scintillators with excellent light yield, energy resolution, and proportionality have been discovered. Among them are Eu2+ doped...
doctoral thesis 2013
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Ou, Z.Q. (author)
This thesis presents a study of the crystal and magnetic structure, the magnetocaloric effect and related physical properties in Mn-Fe-P-X compounds. The influences of boron addition in (Mn,Fe)2(P,As) compounds have been studied. It is found that boron atoms occupy interstitial sites within the basal plane. First order magnetoelastic phase...
doctoral thesis 2013
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Sjenitzer, B.L. (author)
In this thesis a new method for the analysis of power transients in a nuclear reactor is developed, which is more accurate than the present state-of-the-art methods. Transient analysis is important tool when designing nuclear reactors, since they predict the behaviour of a reactor during changing conditions, such as a control-rod movement,...
doctoral thesis 2013
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Haverkate, L.A. (author)
This thesis explores some fundamental aspects of charge carrier transport at the nanoscale. The study is divided in two parts. In the first part, the structural, dynamical and vibrational properties of discotic liquid crystals are studied in relation to the potential of these self-assembled ‘mesophases’ to form molecular conducting wires....
doctoral thesis 2013
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Khodyuk, I.V. (author)
A scintillator is a transparent material that emits a flash of light when it absorbs a ?-ray photon or an energetic particle. Scintillation crystals are widely used as spectroscopic detectors of ionizing radiation in nuclear science, space exploration, medical imaging, homeland security, etc. This thesis is about nonproportional response of...
doctoral thesis 2013
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Rogers, E.G. (author)
Lanthanide based materials are used in everything from phosphors for light bulbs and LEDs, to scintillators for medical imaging purposes to magnets. They also show potential for spintronics and for increasing the efficiency of solar cells. Knowing the energy of the lanthanide 4f and 5d states is important for understanding the electronic...
doctoral thesis 2012
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Nguyen, H.D. (author)
Limited resources and the wish for improved prosperity call for efficient use of energy. The UN Advisory Group on Energy and Climate Change recommends a target of 40 % improved efficiency by 2030. Materials research can contribute significantly to reach this target. Magnetic refrigeration offers potential to achieve a 50 % higher energy...
doctoral thesis 2012
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Seifert, S. (author)
Positron emission tomography (PET) is a nuclear medical imaging modality. Its aim is to visualize the 3-dimensional distribution of a radiopharmaceutical (also called the tracer) within a patient (clinical PET) or test-animal (in case of preclinical investigations). The information that can be obtained from the reconstructed distribution depends...
doctoral thesis 2012
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Marmier, A. (author)
The work presented in this thesis covers three fundamental aspects of High Temperature Reactor (HTR) performance, namely fuel testing under irradiation for maximized safety and sustainability, fuel architecture for improved economy and sustainability, and a novel Balance of Plant concept to enable future high-tech process heat applications with...
doctoral thesis 2012
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Van Dam, H.T. (author)
Positron emission tomography (PET) is one of the key medical imaging modalities in the diagnosis and staging of e.g. cancer and cardiovascular diseases. The image formation is based on the measurement of annihilation photon pairs in the detector ring of the PET scanner. The diagnostic value of a PET image depends crucially on the image quality,...
doctoral thesis 2012
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Cunningham, A.C. (author)
Geological evidence of storm surges has the potential to provide vital information on storm-surge risk. Sediment from the coastal dunes of the Netherlands contains evidence of extreme floods that occurred before reliable measurements of water level began. For these sediments to be useful in flood-risk analysis, they need to be reliably dated....
doctoral thesis 2011
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Mahmood, A. (author)
The vertical rod/tube bundle geometry has a wide variety of industrial applications. Typical examples are the core of light water nuclear reactors (LWR) and vertical tube steam generators. In the core of a LWR, primarily coolant flows upward but their also exist a flow in lateral direction, called crossflow, in the gaps in between the sub...
doctoral thesis 2011
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Van Heijkamp, L.F. (author)
In this study non-invasive neutron scattering techniques are used on soft condensed matter, probing colloidal length scales. Neutrons penetrate deeply into matter and have a different interaction with hydrogen and deuterium, allowing for tunable contrast using light and heavy water as solvents. The mesoscopic structure of materials is determined...
doctoral thesis 2011
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Christoforou, S. (author)
The ability of the Monte Carlo method to solve particle transport problems by simulating the particle behaviour makes it a very useful technique in nuclear reactor physics. However, the statistical nature of Monte Carlo implies that there will always be a variance associated with the estimate obtained, making the reduction of this variance,...
doctoral thesis 2010
Searched for: department:"Radiation%2C%5C+Radionuclides%5C+%26%5C+Reactors"
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