Sökning: "mass spectrometry"

Visar resultat 1 - 5 av 192 uppsatser innehållade orden mass spectrometry.

  1. 1. Hydrological catchment analysis from characterisation of organic matter in stream water

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Hannes Berg Wiklund; [2020-02-05]
    Nyckelord :Organic matter; Time-of-flight mass spectrometry; aquatic chemistry; catchment hydrology;

    Sammanfattning : Organic matter (OM) in aquatic systems is a complex field which have rapidly developed duringthe last decade due to the introduction of high resolution mass spectrometers. The compositionof OM in the aquatic environment is directly dependent on factors such as oxygen supply, pHand the flow rate in the local system. LÄS MER

  2. 2. Development of a Method for Separation of Adenine Nucleotides

    Master-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Erika Miegel; [2020]
    Nyckelord :analytical chemistry; HPLC; HILIC; chromatography; technical analytical chemistry; teknisk analytisk kemi; Chemistry; Technology and Engineering;

    Sammanfattning : Adenosine tetraphosphate, or Ap4A, is a nucleotide with very interesting proposed biological effects. Previous studies have indicated that blood glucose levels in mammals might increase in the presence of Ap4A, and that Ap4A might antagonize pancreatic ATP channels. LÄS MER


    Master-uppsats, Uppsala universitet/Institutionen för medicinsk biokemi och mikrobiologi

    Författare :Farhana Manzoor; [2020]
    Nyckelord :Bovine meat and milk factors; multiple sclerosis; immunoprecipitation co-immunoprecipitation; protein dimers; mass spectrometry; immunodetection; cesium chloride density gradient centrifugation; sodium dodecyl sulfate-polyacrylamide gel electrophoresis; vesicle; particle; interaction partner; pull-down assay.;

    Sammanfattning : Introduction: Bovine meat and milk factors (BMMF) frequently isolated from bovine meat and milk, are discussed as putative causative agents for breast, colon and possibly other cancers. The hypothesis was formulated based on earlier correlative studies indicating that BMMFs could indirectly trigger inflammation, accumulate mutational events via reactive oxygen and nitrogen species production which eventually provokes tumor formation. LÄS MER

  4. 4. Alternative oxidase respiration in the mycorrhizal fungus Laccaria bicolor

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Hilda Mikaelsson; [2019]
    Nyckelord :L. bicolor; mycel; ektomykorrhiza; cellandning; AOX; alternativt oxidas; cytokromoxidas; cyanid; mycelium; ectomychorriza; respiration; alternative oxidase; cytochrome oxidase; salicylhydroxamic acid; n-propyl gallate; cyanide;

    Sammanfattning : The temperature on Earth is rising, and one of the main drivers is anthropogen-ic greenhouse gases such as carbon dioxide (CO2). The world’s forests act as carbon sinks, binding carbon into their biomass. The net carbon assimilation is determined by the uptake and release of CO2 through the processes of photo-synthesis and respiration. LÄS MER

  5. 5. Perfluorooctane sulfonate (PFOS) and related chemicals in eggs from Sweden and China

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Yasmin Karimi; [2019]
    Nyckelord :PFOS; PFOA; Chicken Egg; LC-MS MS; Organic egg; Conventional egg;

    Sammanfattning : Dietary intake is one of the major routes of human exposure to perfluoroalkyl and/or polyfluoroalkyl substances (PFAS). The objective of this study was to measure perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA) and perfluorohexane sulfonic acid (PFHxS) in organic and conventional egg from Sweden (n=8, consisted of 4 pooled eggs and 4 individuals) and China (n=9, consisted of 4 pooled eggs and 5 individuals) and compare the concentrations of PFAS between the two categories (organic and conventional). LÄS MER