Sökning: "Reaction mechanism"
Visar resultat 16 - 20 av 698 avhandlingar innehållade orden Reaction mechanism.
16. Ultrafast Photo-induced Reaction Dynamics of Small Molecules
Sammanfattning : The main focus of this thesis is the investigation of the dissociation dynamics of aryl halides using femtosecond pump-probe spectroscopy. In the monohalogenated aryl halides, iodo-, bromo- and chlorobenzene, the rate of dissociation following excitation at 266 nm in the gas phase increased with increasing mass of the halogen atom. LÄS MER
17. On the mechanism of electrophilic aromatic substitution : an investigation by means of the effect of isotopic mass on reaction velocity
Sammanfattning : .... LÄS MER
18. Organic Synthesis in Nonionic Microemulsions
Sammanfattning : The aim of this work has been to explore the use of microemulsions as reaction media for organic synthesis. Another important aim has been to improve the understanding of the reaction kinetics and the mechanism of the reaction in this type of surfactant system. LÄS MER
19. Homogeneous Ignition - Chemical Kinetic Studies for IC-Engine Applications
Sammanfattning : Calculations on a Homogeneous Charge Compression Ignition (HCCI) engine have been performed. Zero-dimensional models were used. The simplest model compressed the gas to auto-ignition, using temperature and pressure at a certain crank angle position obtained from engine experiments. LÄS MER
20. Quantum Chemical Modeling of Enzymatic Methyl Transfer Reactions
Sammanfattning : In this thesis, quantum chemistry, in particular the B3LYP density functional method, is used to investigate a number of methyl transfer enzymes. Quantum chemical methodology is today a very important tool in the elucidation of properties and reaction mechanisms of enzyme active sites. LÄS MER