Essays about: "In-situ Spectroscopy"

Showing result 21 - 25 of 45 essays containing the words In-situ Spectroscopy.

1. 21. Observing phase changes in real time on ultrathin Iron oxide surfaces

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Harald Wallander; [2019]
   Keywords : CO oxidation; platinum; iron oxides; Physics and Astronomy;

   Abstract : Studying catalysts under such non-equilibrium conditions is a step towards approaching more realistic reaction conditions for working catalysts. Reactivity during phase changes of ultra-thin FeO2 films grown on Pt(111) are studied in situ with Ambient Pressure X-ray Photo Emission Spectroscopy and Quadrupole Mass Spectrometry, while running the CO oxidation reaction at 160°C and 0:6 mbar. READ MORE

3. 22. Optimization of Cubesat-Compatible Plasma Ion Analyzer for Asteroid Composition Analysis

   University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Author : Ivan Zankov; [2019]
   Keywords : Asteroid Composition Analyzer ACA Hera HERA APEX ESA Mission Exploration Didymos Didymoon Sputtering Ion Mass Spectrometry Spectroscopy TOF Reflectron IRF;

   Abstract : Many space probes have conducted in situ explorations of asteroids, in recent decades, intent on identifying evidence of the solar system's earliest processes of formation within the asteroids' interiors. Several future asteroid missions are planned, among which include ESA's Hera mission to explore the Didymos binary asteroid pair. READ MORE

4. 23. A novel manganese cofactor : Elucidation and characterization of a high-valent manganese cofactor in ribonucleotide reductase using Electron Paramagnetic Resonance spectroscopy

   University essay from Uppsala universitet/Molekylär biomimetik

   Author : Sigrid Berglund; [2018]
   Keywords : ;

   Abstract : The in-biology novel high-valent manganese cofactor {MnIII MnIV} has been elucidated and characterized in a ribonucleotide reductase from Facklamia ignava, establishing the new radical-free ribonucleotide reductase class; class Id. The cofactor was found to be directly connected to catalytic activity and a mixed-metal cofactor was disproven using a newly formulated in vitro assembly protocol and activity assays. READ MORE

5. 24. Fluorescence probes: towards automatic coagulant dosing

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Daphné Lecellier; [2018]
   Keywords : Drinking water quality; Water treatment process; Coagulation; Microcystis aerugosa; algal organic matter; LC-OCD; EEM; powdered activated carbon; Alum;

   Abstract : There is a current lack of accurate tools to determine the concentration of cyanobacteria in situ.  Besides, cyanobacterial blooms have to be carefully monitored in reservoirs as they are more frequent because of climate change and can lead to potential released of toxins, along with other components. READ MORE

6. 25. Tunable diode laser absorptionspectroscopy of atomic potassium in a KOH-seeded flat flame

   University essay from Umeå universitet/Institutionen för fysik

   Author : Mirjam Eriksson; [2018]
   Keywords : ;

   Abstract : Potassium (K) is the main ash-forming element released from biomass during thermochemical conversion. A better understanding of K chemistry and monitoring of K species is needed to optimize combustion systems. READ MORE