Sökning: "Martin Ekman"

Hittade 3 avhandlingar innehållade orden Martin Ekman.

  1. 1. Cyanobacteria in symbiosis with plants : Protein patterns and regulatory mechanisms

    Författare :Martin Ekman; Birgitta Bergman; Dave G. Adams; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cyanobacteria; symbiosis; Nostoc; Gunnera; Azolla; nitrogenase; modification; heterotrophic; proteomics; unsequenced; Plant physiology; Växtfysiologi;

    Sammanfattning : Cyanobacteria belonging to the heterocystous genus Nostoc, capable of oxygenic photosynthesis and nitrogen fixation via the enzyme nitrogenase, may form symbiotic associations with plants. In these associations most of the N2 fixed by the symbiotic cyanobacteria (cyanobiont) is transferred to the host, which in turn supplies the cyanobiont with fixed carbon. LÄS MER

  3. 2. Liquid Chromatography – Mass Spectrometry Analysis of Short-lived Tracers in Biological Matrices : Exploration of Radiotracer Chemistry as an Analytical Tool

    Författare :Martin Lavén; Karin Markides; Bengt Långström; Rolf Ekman; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; liquid chromatography - mass spectrometry; radiotracer chemistry; positron emission tomography; biological samples; radionuclide imaging; Analytisk kemi; Analytical chemistry; Analytisk kemi;

    Sammanfattning : Liquid chromatography – mass spectrometry (LC-MS) methods were developed for the analysis of positron emission tomography (PET) radiotracers in biological matrices. Additionally, radiotracer chemistry was explored as an analytical tool for supporting LC-MS method development and imaging molecular interactions in miniaturised chemical analysis systems. LÄS MER

  4. 3. Testosterone Use and Abuse : Methodological Aspects in Forensic Toxicology and Clinical Diagnostics

    Författare :Yvonne Lood; Jeanette Wahlberg; Johan Ahlner; Bertil Ekman; Elisabeth Aardal; Martin Josefsson; Ingemar Thiblin; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Abuse of anabolic androgenic steroids (AAS) is widespread in society and is today a major public health problem, associated with mental and somatic adverse effects and risk behavior, such as use of other illicit drugs and criminality. Testosterone, the most important endogenous male androgen, is therapeutically used in replacement therapy but is also extensively used as a doping agent. LÄS MER