Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"dewar"”.
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Continuous transfer of liquid helium to a rotating dewar,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1970.
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The Housing Conditions of Township Neighbourhoods: Assessing Housing Performance in Langa, Cape Town
… created peripheral townships neighbourhoods (Dewar & Uytenbogaardt, 1977:4). This had resulted in people of colour living within neighbourhoods with poor and subpar access to resources such as education, sanitation, employment, and critical opportunities for growth such as employment. These …
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The Development of Medical Services in the Highlands and Islands of Scotland, 1843-1936
… Islands Medical Service enquiry, known as the Dewar enquiry. Established in 1912 it investigated the level and adequacy of medical services in the region. It recommended the establishment of a central body to improve the provision of medical services for the majority of the population and it …
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Black housing in South Africa : realities, myths and options
… for the construction or their own houses. (Dewar, 1983). Furthermore state- provided rented accommodation will, only be built for welfare cases and for people earning less than R150.00 a month. Even here a substantial cutback is implied. To quote the Minister, As far as housing for the poor …
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Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array
… as well as temperature changes within the dewar sensor cooling vessel. These scene-based reference free approaches to the calculation of compensation coefficients in the infrared camera are shown to be successful in compensating for the effects of fixed pattern spatial noise.
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Coupling light to superconductive photon counters
… of 4 K: one is for immersion device-testing in a dewar; another is for packaging the detector inside a cryocooler. In addition, I have designed and fabricated SNSPDs suitable for the coupling with single-mode fiber, based on my theoretical calculation of the system detection-efficiency. Some …
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Critical temperatures of superconducting solders
… would be ideal. This experiment uses a bucket Dewar and a cryocooler to attempt to cool the solders to 4.2K and determine at which temperature they become superconducting. The setup, however, was not capable of measuring any of the four tested solders' critical temperature. Reasons for this may …
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INFLOW: Spatially Integrating Local Water Capture into Gugulethu and Surrounds, Cape Town
… integrated into settlement, as argued by Dewar (2017). Stormwater infrastructure systems have however, generally been considered as purely utilitarian public works services, designed to drain water as rapidly as possible from impermeable surfaces of built up areas. They are not spatially …
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Konzeption eines kryogenen Penningfallenaufbaus für SHIPTRAP und Massenbestimmungen von Radionukliden um den Z = 82 - Schalenabschluss an ISOLTRAP
… und Messfalle - und einem flüssig Helium-Dewar zum Betreiben einer supraleitenden Induktivität, die für den hochempfindlichen Nachweis notwendig ist. An ISOLTRAP erfolgt der Nachweis der resonanten Anregung der Zyklotronfrequenz mit der Flugzeitmethode. Es wurden die atomaren Massen der …
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Evaluation, design, and construction of the Wallace Astrophysical Observatory Camera for astronomical observations
… which consists of three modules: 1) vacuum dewar (houses a CCD detector), 2) shutter (controls when light hits the camera detector), and 3) filter wheel (modifies the light before hitting the detector). The remaining work left on the WAOcam is the installation of two additional modules: 1) a …
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Chemistry of B1- and B10- boranes containing halogen or pseudohalogen groups
… Neglect of Differential Overlap (MNDO) method of Dewar et al. The results were compared where possible with experimental results such as the X-ray crystallographically determined structures of [BH3CI]- and [B10H10]2-. Chapter Three concerns halogenated selenaborane clusters and reports an improved …
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Transforming the Potchefstroom industrial area and the Ikageng Gateway corridor to combat urban decay.
… facing Potchefstroom. Through the lens of Dewar (2019), I examine the imperative of addressing historical legacies and promoting spatial justice in urban design. The Ikageng Gateway Corridor, once a vital artery of connectivity and commerce, now bears the scars of urban decay. This study …
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Inclusive urban centres
… such as those suggested by professors David Dewar and Fabio Todeschini in their book "Urban Management and Economic Integration", and architectural examples, such as the ancient Greek Agora, will be analysed and used to equip me in imagining an inclusive vision for the further urban …
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Single-electron transport and electron-phonon interactions in graphene heterostructured self-assembled molecular solid-state devices
… the samples with ionic liquid in a liquid-helium dewar. Both agreements and inconsistencies with the proposed model and other hypotheses are discussed. The third project investigates Fermi level control by examining various molecule-electrode interfaces and molecular backbone structures. …
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Modelling the two-phase plume dynamics of CO2 leakage into open shallow waters
A numerical model of two-phase plume developments in a small scale turbulent ocean is proposed and designed as a fundamental study to predict the near field physicochemical impacts and biological risk to the marine ecosystem from CO2 leakage from potential carbon storage locations around the North …
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Folate transport and drug resistance in the African Trypanosome
The aim of this thesis was to expand upon the knowledge of the mechanism of action and resistance of antifolate drugs in African trypanosomes with a specific focus on transport mechanisms. A media deficient in folate and thymidine was established which enabled the assessment of their modulation on …
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Development of a theory of particle mixtures and its application to aggregates, mortars and concretes
This thesis describes in detail the development of a Theory of Particle Mixtures by which certain aspects of the behaviour of mixtures may be predicted by computer simulation from a knowledge of the mean size, voids ratio and relative density of each of the components. The Theory involves …
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Global convergence of tax judgments and principles between South African courts and foreign courts: Assessing evidence of convergence in South African case law and its desirability in a South African context
This paper seeks to assess the presence of convergence of domestic and foreign tax judgments and principles in South African courtrooms. Besides the practical fact of assessing the general view of South Africa courts to the application of foreign cases and principles, it also explores whether …
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