Sökning: "stoichiometric"
Visar resultat 6 - 10 av 187 avhandlingar innehållade ordet stoichiometric.
6. Consequences of consumer-resource stoichiometric imbalance in planktonic food webs
Sammanfattning : Resource imbalance between consumers and their resources can come from inadequate resource quantity or quality. The ecological stoichiometry theory focuses on understanding the consequences of imbalance in elemental composition. In this thesis, I have used both resource quality (e.g. LÄS MER
7. Analysis and Control of Continuous Microaerobic Ethanol Production by Yeast
Sammanfattning : Glucose fermentation by Saccharomyces cerevisiae, and xylose fermentation by Candida utilis and Pichia stipitis, were investigated under microaerobic conditions. A dynamic experimental method named oxygen programmed fermentation (OPF), and a method for microaerobic RQ control in continuous culture have been developed. LÄS MER
8. Development of Models, Methods, and Materiel for Deep Tissue Imaging using Light, Ultrasound, and Spectral-Hole Burning
Sammanfattning : The medical imaging technique called “ultrasound optical tomography” (UOT) entails light scattered in tissue that is given spatial information by interacting with an ultrasound field, thus allowing for molecular information to be imaged with ultrasonic resolution. This thesis discusses how UOT can be implemented, with most attention put toward the implementation using spectral-hole-burning filters (SHF) in rare-earth-ion-doped crystals. LÄS MER
9. Knock in Gasoline Engines - the Effects of Mixture Composition on Knock Onset and Heat Transfer
Sammanfattning : This thesis is based on experimental investigations into engine knock in, (a) a multi-cylinder turbocharged engine, and (b) a single-cylinder engine featuring optical access. The optical access facilitated the measurement of temperature in the end-gas using coherent anti-Stokes Raman spectroscopy (CARS). LÄS MER
10. On the preparation and properties of mixed-valence alkali vanadium oxides
Sammanfattning : The phase relations in the systems A2O-V2O5-V2O3 (A = alkali metal) are very complex. The existence of a number of stoichiometric and non-stoichiometric phases complicates phase analysis and preparative work. LÄS MER