Sökning: "jonisering"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet jonisering.

  1. 1. Tools for applied soft ionization mass spectrometry

    Författare :Joakim Romson; Åsa Emmer; Peter Dinér; Steven Wilson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mass spectrometry; Electrospray ionization; Matrix assisted laser desorption ionization; Mass accuracy; Mass shifts; Ion trap; Capillary electrophoresis; Sample concentration; Masspektrometri; Elektrospray-jonisering; Matrisassisterad laser desorbtion jonisering; Mass-exakthet; Masskift; Jonfälla; Kapillärelektrofores; Provkoncentration; Kemi; Chemistry;

    Sammanfattning :  Mass spectrometry (MS) is an important analytical tool. Its most importantadvantages are sensitivity, resolution, and accurate and precise m/zmeasurements. To get the best results from an instrument, the user musthave knowledge of its limitation and requirements. LÄS MER

  3. 2. Characterization of an Electrical Sensor for Combustion Diagnostics

    Författare :Axel Franke; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ion sensor; combustion; nitric oxide; chemi-ionization; equilibrium; Physics; ionized gases; Fysicumarkivet A:2002:Franke; ionization sensor; Fysik;

    Sammanfattning : The ionization sensor is an electrical probe for diagnostics in internal combustion engines. The combustion process affects the electrical properties of the gas in the cylinder. Thus the sensor signal contains copious information about the conditions in the combustion chamber. LÄS MER

  4. 3. Methods for protein analysis by capillary electrophoresis and mass spectrometry

    Författare :Joakim Romson; Åsa Emmer; Peter Dinér; Lukas Käll; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MALDI; Concentration plates; Alkyl ketene dimer; CE-MALDI-MS2; On-target digestion; Automation; Robot; Pieris napi; spermatophore; ESI-MS2; Osteopontin; MALDI; Koncentrationsprovplatta; alkylketenedimer; CE-MALDI-MS2; enzymklyvning på provplatta; Automatisering; Robot; Pieris napi; Spermatofor; ESI-MS2; Osteopontin; Kemi; Chemistry;

    Sammanfattning : Protein analysis is important to understanding biological systems, but sample diversity necessitates a multitude of analysis techniques and methods. Challenges that are addressed include analysis of low abundance samples, fractionation to reduce sample complexity, and automation to reduce time and cost. LÄS MER

  5. 4. Chemical labelling methods for gel free based proteomics

    Författare :Åsa Wåhlander; Institutionen för immunteknologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biotechnology; Bioteknik; Biokemisk teknik; Biochemical technology; 2D-HPLC; isotopes; labelling; proteomics; mass spectrometry;

    Sammanfattning : In this thesis different aspects of gel free procedures for mass spectrometry based proteome analysis are addressed, with emphasis on labelling techniques. It is based on three original articles where the effects imposed onto peptides upon modification are investigated, and the development of a new type of labelling strategy is described. LÄS MER

  7. 5. Theoretical and Experimental Studies of the Formation of Ionized Gases in Spark Ignition Engines

    Författare :Raymond Reinmann; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thermal Ionization; Calorimetry; Interferometry; Spark Ignition Engine; Current and Voltage Measurements; Engine Control.; fluid dynamics; Gases; plasmas; Gaser; plasma; fluiddynamik; Breakdown; Arc; Glow; Flame Ionization; Chemi-Ionization; Spark; Townsend; Fysicumarkivet A:1998:Reinmann;

    Sammanfattning : The processes that govern the formation, existence and consumption of ions in gases have been studied both experimentally and theoretically. The aim of the work is targeted at increasing the understanding of these phenomena in the working gases inside an engine. LÄS MER