Sökning: "Capillary electrophoresis CE"

Visar resultat 31 - 35 av 45 avhandlingar innehållade orden Capillary electrophoresis CE.

  1. 31. Interfacing Complementary Separation Techniques with Mass Spectrometry Utilizing Electrophoresis, Nanoparticles, and Functionalized Magnetic Beads

    Författare :David Malmström; Jonas Bergquist; Magnus Wetterhall; Alejandro Cifuentes; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Capillary electrophoresis (CE) has during the last two decades become more robust and been able to separate neutral analytes without compromising the downstream detection. An interesting aspect in CE compared to more commonly used high-performance liquid chromatography is the orthogonal separation mechanism provided by CE. LÄS MER

  3. 32. Electrochemical Aspects of Miniaturized Analytical Platforms

    Författare :Oliver Klett; Frank-Michael Matysik; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; electrochemical detection; microanalytical systems; on-chip CE; ESI; Analytisk kemi; Analytical chemistry; Analytisk kemi; Analytical Chemistry; Analytisk kemi;

    Sammanfattning : This thesis ties some electrochemical aspects of development and fabrication of an analytical system on a microchip together. These aspects develop through the fundamentals of amperometric detection in microsystems and microfabrication via the interaction of electrochemical detection and electrophoretic separation finally to the interfacing of a microsystem to the macro world. LÄS MER

  4. 33. Formation and role of nitric oxide in host defense reactions in the urinary bladder

    Författare :Edward R I Morcos; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :bladder cancer; BCG; cytokines; urinary tract infection; nitric oxide; nitric oxide synthase; nitrite; nitrate; capillary electrophoresis;

    Sammanfattning : Nitric oxide (NO) is an important biological mediator and cell signaling molecule. It is also involved in several host defense reactions. NO is formed in vivo from L-arginine by the enzyme NO synthase (NOS). However, it can also be formed non-enzymatically from acidified nitrite. LÄS MER

  5. 34. Elimination of caffeine metabolites in man

    Författare :Nikolaos Rodopoulos; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :C8-oxidation capillary elearophoresis dimethylxanthines high-performance liquidchromatography liver cirrhosis N-acetylation N-demethylation monomethylurates monomethylxanthines;

    Sammanfattning : Plasma, saliva and urinary caffeine (CA), paraxanthine (PX), theobromine (TB), theophylline (TP) and their metabolites were, after separation into fractions by reversed-phase high-performance liquid chromatography (HPLC), quantitated by capillary electrophoresis (CE). In healthy adults, 96% of the total amount of excreted compounds derived from CA were dimethylxanthines (DMXs) and metabolites, the remainder 4% being nonmetabolized CA and its non-demethylated urate. LÄS MER

  7. 35. New directions in non-porous membrane extraction

    Författare :Eddie Thordarson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; extracting syringe; solvent-free; miniaturisation; micro-porous membrane liquid-liquid extraction; polymeric membrane extraction; Non-porous membrane extraction; supported liquid extraction; integration; automation; Analytical chemistry; Analytisk kemi;

    Sammanfattning : Complex biological and environmental samples require a high degree of selectivity in order to determine components therein. Sensitivity measures, such as analyte pre-concentration are often required for assessing composition quantitatively. LÄS MER