Search for dissertations about: "Mass spectrometer"

Showing result 1 - 5 of 98 swedish dissertations containing the words Mass spectrometer.

  2. 1. The Penning trap mass spectrometer SMILETRAP II and evaporative cooling of highly-charged ions

    Author : Matthias Hobein; Reinhold Schuch; David Lunney; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Penning trap; Precision mass spectrometry; Atomic mass; Highly-charged ions; Evaporative cooling; Coherent oscillation; Ion beam emittance; Atomic physics; Atomfysik; fysik; Physics;

    Abstract : Accurate mass values have wide-ranging applications in physics and metrology, allowing, for example, to test quantum electrodynamics and fundamental symmetries, to determine fundamental constants, and to establish weight standards. This thesis describes the new high-precision double-Penning trap mass spectrometer SMILETRAP II which aims at relative uncertainties in the mass determination of 10-10 and below. READ MORE

  4. 2. Atomic laser resonance ionization mass spectrometry

    Author : Lars Bengtsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; resonacne ioniation spectroscopy; photoionization; resonant photoexcitaiton; time-of-flight mass spectrometer; resonance ionization mass spectrometry; laser ablation; isotope selectivity; RIMS; RIS;

    Abstract : .... READ MORE

  5. 3. Analytical developments and applications of ambient mass spectrometry imaging : Visualizing challenging analytes and understanding chemical mechanisms of ischemic stroke

    Author : Leonidas Mavroudakis; Ingela Lanekoff; Daniel Globisch; Malcolm Clench; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; mass spectrometry imaging; ischemic stroke; mass spectrometry; isomers; spatial metabolomics; host-guest; Kemi med inriktning mot analytisk kemi; Chemistry with specialization in Analytical Chemistry;

    Abstract : Bioanalytical methods that provide spatial information on molecular distributions are important for deep understanding of chemical mechanisms in health and disease. For instance, the localized action of drugs and metabolites can provide valuable information on metabolism in specific cellular regions, which would not be possible with bulk analysis. READ MORE

  6. 4. Chiral Recognition by Means of Mass Spectrometry

    Author : Oleksii Rebrov; Mats Larsson; Per Johnsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chirality; Mass spectrometry; Chiral recognition; Gas phase; kemisk fysik; Chemical Physics;

    Abstract : This thesis is based on experimental studies of chiral ions in gas-phase. Electrospray ion source platform (Stockholm University) and commercially available Quadrupole Time-of-Flight mass spectrometer have been used in our studies. READ MORE

  7. 5. Development of Methods for Protein and Peptide Analysis Applied in Neuroscience Utilizing Mass Spectrometry

    Author : Johan Pierson; Per Andrén; Ulf Bondesson; György Marko-Varga; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Mass spectrometry; Parkinson’s disease; Metabolism; Profiling Mass Spectrometry; Proteomics; Analytisk kemi; Analytical chemistry; Analytisk kemi;

    Abstract : This thesis describes the utilization of the matrix-assisted laser desorption ionization mass spectrometry (MALDI MS) and electrospray ionization (ESI) MS techniques for analysis of complex brain tissue samples. Direct molecular profiling of biological samples using MALDI MS is a powerful tool for identifying phenotypic markers. READ MORE