Search for dissertations about: "ToF-SIMS"

Showing result 1 - 5 of 45 swedish dissertations containing the word ToF-SIMS.

  1. 1. Single fluid inclusion analysis using ToF-SIMS Implications for ancient Earth biodiversiy and paleoenvironment studies

    University dissertation from Stockholm : Department of Geological Sciences, Stockholm University

    Author : Sandra Siljeström; Jukka Lausmaa; Andrew Steele; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ToF-SIMS; time-of-flight secondary ion mass spectrometry; fluid inclusions; biomarkers; hopanes; steranes; early life; paleoenvironment; oil; eukaryotes; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap; geokemi; Geochemistry;

    Abstract : When and how life first emerged on the Earth is an area of intense research. Signs of the first life on Earth, including morphological fossils, are scarce and hard to interpret. An alternative approach is to study organic biomarkers, which are molecular fossils commonly considered as bona fide biosignatures. READ MORE

  2. 2. Application of imaging TOF-SIMS in cell and tissue research

    University dissertation from Stockholm : Department of Geological Sciences, Stockholm University

    Author : Katrin Richter; Göteborgs universitet.; Gothenburg University.; [2007]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TOF-SIMS; imaging mass spectrometry; cryopreparation; ions; lipids; galactosylceramide; sulfatide; fatty acids;

    Abstract : This thesis is aimed at extending the use of TOF-SIMS (time of flight secondary ion mass spectrometry) as an analytical tool in cell and tissue research. TOF-SIMS is a relatively new method that allows analysis of the chemical composition of sample surfaces. READ MORE

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

    University dissertation from Stockholm : Department of Geological Sciences, Stockholm University

    Author : Ylva Magnusson; Göteborgs universitet.; Gothenburg University.; [2008]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 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

  4. 4. ToF-SIMS as a tool for analysing organic material in geological samples -Fluid inclusions and beyond

    University dissertation from Stockholm : Department of Geological Sciences, Stockholm University

    Author : Sandra Siljeström; Jukka Lausmaa; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic material; ToF-SIMS; NATURAL SCIENCES Earth sciences Other earth sciences; NATURVETENSKAP Geovetenskap Övrig geovetenskap; geokemi; Geochemistry;

    Abstract : In situ analysis of organic material in rocks has potential to answer questions in geochemistry, astro- and geobiology. Recently, successful studies which included in situ analyses of geological samples with time-of-flight secondary ion mass spectrometry (ToF-SIMS) were carried out. READ MORE

  5. 5. Surface Characterisation Using ToF-SIMS, AES and XPS of Silane Films and Organic Coatings Deposited on Metal Substrates

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ulf Bexell; Mikael Olsson; Sven Erik Hörnström; Åsa Kassman Rudolphi; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Silanes; Organic films; ToF-SIMS; AES; XPS; Materialvetenskap; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap; materialvetenskap; Materials Science;

    Abstract : This work focuses on the surface and interfacial characterisation of silane films of a non-organofunctional silane, 1,2-bis(triethoxysilyl)ethane (BTSE), and an organofunctional silane, γ-mercaptopropyltrimethoxysilane (γ-MPS), deposited on Al, Zn and Al-43.4Zn-1.6Si (AlZn) alloy coated steel. READ MORE