Sökning: "Gregory the Great"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Gregory the Great.
1. Thin metal films on weakly-interacting substrates : Nanoscale growth dynamics, stress generation, and morphology manipulation
Sammanfattning : Vapor-based growth of thin metal films with controlled morphology on weakly-interacting substrates (WIS), including oxides and van der Waals materials, is essential for the fabrication of multifunctional metal contacts in a wide array of optoelectronic devices. Achieving this entails a great challenge, since weak film/substrate interactions yield a pronounced and uncontrolled 3D morphology. LÄS MER
2. Byzantine holy images and the issue of transcendence and immanence : The theological background of the Late Byzantine Palaiologan iconography and aesthetics of the Chora church, Istanbul
Sammanfattning : On the basis of theological ideas in the Christian Orthodox tradition in general, and the Cappadocian Fathers in specific, this dissertation examines how the ontology of the transcendent triune God and the human and divine in Christ is implied or manifest in the Late Byzantine Palaiologan mosaics and murals of the Chora church.The study is divided into four chapters. LÄS MER
3. Journal bearing design, lubrication and operation for enhanced performance
Sammanfattning : The increasing introduction of intermittent power sources combined with the de-regulation of electricity markets has led to increased instability in the electrical grid. This has led to increased start-up and shutdown of regulating power sources such as hydro-electric power plants and operation at non-ideal operating states both of which increase the wear and tear on machines. LÄS MER
4. Synthetic lubricants and polymer composites for large full film journal bearings
Sammanfattning : The rapid build-up of variable renewable power sources such as wind and solar are leading to increased instability in the electrical grid. Many methods of controlling this instability have been proposed but existing hydroelectric power plants in many cases already been enlisted to fill the regulating power needs of industry and the population. LÄS MER
5. Phase stability and defect structures in (Ti,Al)N hard coatings
Sammanfattning : This study highlights the role of nitrogen vacancies and defect structures in engineering hard coatings with enhanced phase stability and mechanical properties for high temperature applications. Titanium aluminum nitride (Ti,Al)N based materials in the form of thin coatings has remained as an outstanding choice for protection of metal cutting tools due to its superior oxidation resistance and high-temperature wear resistance. LÄS MER