Sökning: "mass fractionation"

Visar resultat 1 - 5 av 71 avhandlingar innehållade orden mass fractionation.

1. 1. Quantitative applications of secondary ion mass spectrometry : solid-state diffusion and mass fractionation studies

   Författare :Ulf Södervall; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Secondary ion mass spactromy SIMS ; isotopic ratios; elemental semiconductors; ionazion mechanisms; mass fractionation; high pressure; diffusion; activation parameters; isotope effects;

   Sammanfattning : .... LÄS MER

3. 2. Mass spectrometry based proteomic strategies applied in the study of central nervous system derived cells

   Författare :Annika Thorsell; Göteborgs universitet; []
   Nyckelord :proteomics; mass spectrometry; protein identification; protein quantitation; fractionation;

   Sammanfattning : This thesis focuses on evaluation, improvement and development of mass spectrometry based proteomic strategies for identification and quantitation of proteins. Development of such strategies is important to achieve a better understanding of regulatory mechanisms of individual cell types, both during normal development and during the onset and progression of diseases. LÄS MER

4. 3. Isotope Ratio and Trace Element Measurements Using Inductively Coupled Plasma – Mass Spectrometry : Method Development and Applications in Environmental Forensics

   Författare :Simon Pontér; Anders Widerlund; Hjalmar Laudon; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Isotope ratio measurements; screening analysis; ICP-MS; MC-ICP-MC; multi-tracer studies; fractionation; Environmental Forensics; Tracing; Tillämpad geokemi; Applied Geochemistry;

   Sammanfattning : Environmental Forensics is a scientific methodology developed for identifying sources, the timing of release, and transport pathways for potentially hazardous environmental contaminants. It combines a variety of analytical methods with principles derived from disciplines such as chemistry, geology, geochemistry, hydrogeology, and statistics, with the purpose to provide objective scientific and legal conclusions on the source and/or time of a contaminant release. LÄS MER

5. 4. Mass spectrometry-based proteomic strategies applied to Helicobacter pylori. A Search for candidate vaccine antigens

   Författare :Elisabet Carlsohn; Göteborgs universitet; []
   Nyckelord :proteomics; mass spectrometry; Helicobacter pylori; membrane proteins; nano-liquid chromatography; subcellular fractionation;

   Sammanfattning : This thesis describes the development and refinement of proteomic strategies and the application of these on the human gastric pathogen H. pylori. The purpose was to identify proteins, and in particular membrane proteins, as potential targets for vaccine development. LÄS MER

7. 5. Asymmetrical Flow Field-Flow Fractionation and Multiangle Light Scattering for Molar Mass Analysis of Polysaccharide Derivatives

   Författare :Mats Andersson; Industriell Produktion; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polysaccharide derivatives ethylhydroxyethyl cellulose; molar mass analysis; asymmetrical flow field-flow fractionation; multiangle light scattering; polymer size distribution; Polymer technology; biopolymers; Polymerteknik;

   Sammanfattning : Molar mass and molar mass distribution of polymers are parameters of fundamental importance as they influence the performance of the polymer in applications. Polysaccharide derivatives are a class of polymers that have attracted significant scientific and commercial interest as they can be manufactured from a wide range of abundant sources in nature and thereby often are both cheap and biocompatible. LÄS MER