Sökning: "ToF-SIMS"

Hittade 4 uppsatser innehållade ordet ToF-SIMS.

1. 1. Tracing Tempera through Time-of-Flight Secondary Ion Mass Spectrometry Analysing samples from four icons from the Nationalmuseum collection

   Master-uppsats, Göteborgs universitet/Institutionen för kulturvård

   Författare :Nina Olivier; [2024-01-30]
   Nyckelord :Icons; tempera; emulsions; analysis methods; ToF-SIMS;

   Sammanfattning : This thesis will analyze samples in form of cross-sections taken from four icons of the Nationalmuseum collection, two Russian, from the 18th and 19th centuries and two Greek, also from the 18th and 19th centuries, using the Time-of-Flight Secondary Ion Mass Technique. The objective is to detect, isolate and, if possible, identify the amino acids and the fatty acids in the protein and lipids used in the tempera, the ground, and the olifa using Time of Flight Secondary Ion Mass Spectrometry. LÄS MER

3. 2. Techniques for characterization and quantification analysis of foulant deposition in Alfa Laval’s high-speed separators : A literature study

   Kandidat-uppsats,

   Författare :Mwansa Benaya; Henrik Dahlén; Emil Axelsson; Cassandra Liljekvist; Maja Nordell; [2022]
   Nyckelord :Dairy foulant; Marine foulant; Characterization; Quantification; Stainless steel; surface; analysis;

   Sammanfattning : Alfa Laval is a global company that provides solutions, products, and services for industry, such as high-speed separators for marine and food-application. Foulant deposition on the stainless-steel surfaces of Alfa Laval’s high-speed separators has shown to result in lowering of the separation efficiency. LÄS MER

4. 3. Characterization of Protein Surface Interactions : Collagen and Osteocalcin

   Master-uppsats, Institutionen för fysik, kemi och biologi; Tekniska högskolan

   Författare :Patrik Johansson; [2013]
   Nyckelord :Osteocalcin; Collagen; SFG; ToF-SIMS; XPS; AFM; Orientation; Surface;

   Sammanfattning : This work investigates how the proteins collagen type I and human osteocalcin interact with various surfaces. A pH-series of collagen adsorbed onto methyl terminated self-assembled monolayers has been made and the results indicate that less tropocollagen is found on the surfaces at pH below 6. LÄS MER

5. 4. Surface Modification of CdSe(ZnS) quantum dots for biomedical applications

   Master-uppsats, Institutionen för fysik, kemi och biologi

   Författare :Ann Winzell; [2010]
   Nyckelord :Quantum dots; surface modification; XPS;

   Sammanfattning : Quantum dots are inorganic nanocrystals of semiconductor metals that have unique light emitting properties. Due to their tunable and narrow emission profile, broad absorption spectra, resistance to photobleaching and high level of brightness they have emerged as inorganic fluorophores and numerous applicabilities for in vitro, in situ as well as in vivo studies are present. LÄS MER