Sökning: "gases"
Visar resultat 1 - 5 av 854 avhandlingar innehållade ordet gases.
1. Theoretical and Experimental Studies of the Formation of Ionized Gases in Spark Ignition Engines
Sammanfattning : The processes that govern the formation, existence and consumption of ions in gases have been studied both experimentally and theoretically. The aim of the work is targeted at increasing the understanding of these phenomena in the working gases inside an engine. LÄS MER
2. Superfluidity and Supersolidity in Ultracold Atomic Gases Beyond Mean Field
Sammanfattning : This thesis investigates ultracold bosonic systems using an extended mean-field formalism with a focus on their superfluid and supersolid properties. The dissertation comprises five chapters and four articles, where the chapters provide some background to the research put forward in articles. LÄS MER
3. Non-CO2 greenhouse gases, uncertainty and land-use competition
Sammanfattning : Over the past 250 years the concentrations of greenhouse gases in the atmosphere have increased drastically. It is close to scientific consensus that these changes have increased the temperature of the earth. LÄS MER
4. Emissions from Fires Consequences for Human Safety and the Environment
Sammanfattning : Accidental fires represent a risk for people from the heat and fire effluents produced. It is clear from fire statistics that it is, in fact, the toxic gases that kill and injure many fire victims. Further, there are a number of compounds that are readily produced in fires, which have important sublethal effects on humans. LÄS MER
5. Selectivity and gas composition in electrochemical systems by mass spectrometry
Sammanfattning : This doctoral thesis presents experimental studies of gaseous products of two electrochemical systems: the chlorate process and the nickel-metal hydride (NiMH) battery, employing mass spectrometry.The cathodic efficiency for the hydrogen evolution reaction (HER) of the chlorate process was investigated by employing ex-situ synthesized MnOx electrodes. LÄS MER