Search for dissertations about: "time-of-flight secondary ion mass spectrometry"

Showing result 11 - 15 of 37 swedish dissertations containing the words time-of-flight secondary ion mass spectrometry.

  2. 11. Analysis of Endogenous Particles in Exhaled Air

    Author : Ann-Charlotte Almstrand; Göteborgs universitet; []
    Keywords : exhaled particles; time-of-flight secondary ion mass spectrometry; OPLS; airway closure; exhaled breath condensate; glutathione;

    Abstract : Exhaled air contains non-volatile particulate material from the respiratory tract. The precise location in which exhaled particles are formed is unknown, and details on their chemical content are scarce. The aim of this work was to chemically characterize and to study the mechanisms of formation of endogenous particles in exhaled air. READ MORE

  4. 12. Probing Biomolecular Recognition at the Single Molecule Level

    Author : Anders Gunnarsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; cell membrane; TIRFM; liposome; time-of-flight secondary ion mass spectrometry; membrane receptor; single molecule; TOF-SIMS; molecular recognition; DNA; barcode; total internal reflection; multiplexing;

    Abstract : Specific recognition between biomolecular partners contributes to a multitude of biochemical signaling within and between cells. The aim of this work has been to investigate the possibility to probe biomolecular recognition reactions at the smallest possible scale, the single molecule level. READ MORE

  5. 13. Electronic excitation, luminescence and particle emission : Studying ion-induced phenomena in ToF-MEIS

    Author : Svenja Lohmann; Daniel Primetzhofer; Friedrich Aumayr; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TOF-MEIS; ion beam analysis; deep UV; desorption; electronic sputtering; TiN;

    Abstract : Medium energy ion scattering (MEIS) is an experimental technique for the high-resolution depth profiling of thin films. Commonly, ions with energies between several ten to a few hundred keV are employed as probes, and backscattered particles are detected. READ MORE

  6. 14. Identification and imaging of lipids in tissues using TOF-SIMS

    Author : Ylva Magnusson; Göteborgs universitet; []
    Keywords : mass spectrometry; lipids; fatty acids; diacylglycerols; triacylglycerols; TOF-SIMS; adipose tissue; aortic wall; skeletal muscle; obesity; principal component analysis;

    Abstract : Introduction: Normal lipid metabolism in the adipose tissue, skeletal muscle and aortic wall is important for the physiological function of these tissues. Dyslipidemia that is often associated with intake of high energy diet and sedentary lifestyles can lead to the development of insulin resistance and cardiovascular diseases. READ MORE

  7. 15. Visualizing and profiling tissue lipids by ToF-SIMS imaging mass spectrometry

    Author : Dalila Belazi; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is an emerging surface analytical method for chemical microanalysis of biological samples. While much work has been done with artificial materials and some with cultured cells and animal tissue, very little ToF-SIMS work has been done so far with clinically relevant tissue samples. READ MORE