Sökning: "current densities"
Visar resultat 1 - 5 av 153 avhandlingar innehållade orden current densities.
1. Exploring Typologies, Densities & Spatial Qualities : The Case of Low-Income Housing in South Africa
Sammanfattning : This thesis focuses on problems that have resulted from the increasing pressure facing urban and suburban land use in South Africa, brought on by a number of different factors including the political and historical background of the country, as well as by rapid urbanization. The objective of this thesis is to present the perspectives applied in the analysis of the built environment in selected case studies, in which different theoretical and methodological approaches have been developed to address the research questions. LÄS MER
2. From Current Collectors to Electrodes : Aluminium Rod Structures for Three-dimensional Li-ion Micro-battery Applications
Sammanfattning : The potential use of 3D aluminium nanorod structures as current collectors and negative electrodes for 3D Li-ion micro-batteries was studied based on the use of relatively simple and cost-effective electrochemical and sol-gel deposition techniques.Aluminium rod structures were synthesised by galvanostatic electrodeposition using commercial porous membranes as templates. LÄS MER
3. Field emission from multi-walled carbon nanotubes
Sammanfattning : .... LÄS MER
4. Durability of Reinforced Concrete under Impressed Current Cathodic Protection
Sammanfattning : Impressed current cathodic protection (ICCP) and prevention (ICCPre) are reliable and efficient techniques to stop, control and postpone corrosion in reinforced concrete structures. However, the wide application of this technique has been limited by the high cost of the anode system. LÄS MER
5. Foundation of Density Functionals in the Presence of Magnetic Field
Sammanfattning : This thesis contains four articles related to mathematical aspects of Density Functional Theory.In Paper A, the theoretical justification of density methods formulated with current densities is addressed. It is shown that the set of ground-states is determined by the ensemble-representable particle and paramagnetic current density. LÄS MER