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Visar resultat 1 - 5 av 275 avhandlingar som matchar ovanstående sökkriterier.
1. Let's Eat Together: Methods and Tools for Inclusive City Design Practice
Sammanfattning : This thesis studies how the practice of eating together impacts on liveable city making. In this thesis, the practice of eating together is called commensality, which is a collective action that creates shared environments. Through time these environments are turned into recognized meeting places where locals gather. LÄS MER
2. Microstructure of the Schottky contact : Ag/GaAs and Au/GaAs
Sammanfattning : .... LÄS MER
3. Surface Studies of Model Systems relevant for Pd and Ag Catalysts
Sammanfattning : This PhD thesis reports on investigations of the atomic scale structure of model catalysts relevant for the catalytic oxidation of CO and methane over Pd, and NOx reduction over silver-alumina, important reactions in automotive catalysts. By using complementary experimental techniques such as X-ray Photoelectron Spectroscopy, High Pressure X-ray Photoelectron Spectroscopy, Surface X-ray Diffraction, Low Energy Electron Diffraction, Infrared Spectroscopy, and Scanning Tunneling Microscopy, combined with theoretical calculations, the work presented in this thesis aims at an atomistic characterization of the active sites for silver-alumina and Pd model catalysts which may help to the design of new and improved catalysts. LÄS MER
4. Synthesis, Characterization, and Evaluation of Ag-based Electrical Contact Materials
Sammanfattning : Ag is a widely used electrical contact material due to its excellent electrical properties. The problems with Ag are that it is soft and has poor tribological properties (high friction and wear in Ag/Ag sliding contacts). LÄS MER
5. Lake sediment as environmental archive : natural and anthropogenic influence on the chronology of trace elements
Sammanfattning : The focus of this thesis is the historical pollution of some seldom-monitored trace elements (SMTEs; Ag, Be, Ga, In, Sb and Tl) that have been involuntarily released for several thousands of years but whose usage have increased during the industrial era. Sediment cores from four rural lakes in a south to north transect in central Sweden, and two urban lakes have been used as environmental archives for chronological studies. LÄS MER
