Sökning: "precursors"
Visar resultat 21 - 25 av 498 avhandlingar innehållade ordet precursors.
21. Chemical vapour deposition of boron-carbon thin films from organoboron precursors
Sammanfattning : Boron-carbon (BxC) thin films enriched in 10B are potential neutron converting layers for 10Bbased solid-state neutron detectors given the good neutron absorption cross-section of 10B atoms in the thin film. Chemical Vapour Deposition (CVD) of such films faces the challenge that the maximum temperature tolerated by the aluminium substrate is 660 °C and low temperature CVD routes for BxC films are thus needed. LÄS MER
22. Asymmetric Synthesis using Redox-Active Diazocompounds as Chiral Carbon Atom Precursors
Sammanfattning : This thesis summarizes the development of general and efficient methods to synthesize enantiomerically enriched cyclopropane compounds. The works reported herein exploit the opportunity presented by redox-active esters to explore the orthogonality between asymmetric carbene-transfer and geminal radical generation. LÄS MER
23. Neuropeptide endopeptidases and opioid precursors in opioid tolerance, arthritis and exercise
Sammanfattning : .... LÄS MER
24. Precursors and defect control for halogenated CVD of thick SiC epitaxial layers
Sammanfattning : Silicon carbide (SiC) is a very hard semiconductor material with wide band gap, high breakdown electric field strength, high thermal conductivity and high saturation electron drift velocity making it a promising material for high frequency and high power devices. The performance of electrical devices is strongly dependent on the quality, doping level and thickness of the grown epitaxial layers. LÄS MER
25. On the synthesis of substance P precursors and their subsequent 11C-labelling
Sammanfattning : .... LÄS MER