Sökning: "gas-phase"
Visar resultat 1 - 5 av 363 avhandlingar innehållade ordet gas-phase.
1. Synchrotron radiation studies of gas phase molecules : from hydrogen to DNA sugars
Sammanfattning : This thesis summarises experimental results on the molecular spectroscopy of gas phase molecules excited by synchrotron radiation in the VUV and soft X-ray regions. We have used three different detection techniques, photon induced fluorescence spectroscopy, photoionisation mass spectroscopy and near edge X-ray absorption fine structure spectroscopy to study molecular deuterium, hydrogen sulphide, ammonia, methanol, pyridine, pyridazine, pyrimidine, pyrazine, s-triazine, and 2-deoxy-D-ribose, the last one also known as the DNA sugar. LÄS MER
2. Gas-Phase Protein Structure Under the Computational Microscope : Hydration, Titration, and Temperature
Sammanfattning : Although the native environment of the vast majority of proteins is a complex aqueous solution, like the interior of a cell, many analysis methods for assessing chemical and physical properties of biomolecules require the sample to be aerosolized; that is, transferred to the gas-phase. An important example is electrospray-ionization mass spectrometry, which can provide a wide range of information about e. LÄS MER
3. Transport in Oxides Studied by Gas Phase Analysis
Sammanfattning : The transport in oxides is studied by the use of gas phase analysis (GPA). An experimental method to identify transported species of gases and their contribution to the overall transport of gases in oxides and an experimental method to evaluate the parameters diffusivity, concentration, permeability of gases in oxides and effective pore size in oxides are developed, respectively. LÄS MER
4. Quantitative Spectroscopy of Gas Phase Reactions at Elevated Temperatures
Sammanfattning : Gas phase reactions at elevated temperatures are versatile tools for material manufacturing and energy conversion. They are of great commercial interest, but they often entail hazardous impacts on the environment. There is consequently a pronounced need for the further develpment of processes utilising these types of reactions. LÄS MER
5. Studies of transport in some oxides by gas phase analysis
Sammanfattning : .... LÄS MER