Sökning: "stabilizer"

Visar resultat 16 - 20 av 67 avhandlingar innehållade ordet stabilizer.

  1. 16. A New Paradigm for Large Brushless Hydrogenerators : Advantages Beyond the Static System

    Författare :Jonas Kristiansen Nøland; Urban Lundin; Phil Mellor; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Brushless exciters; Rotating exciters; Permanent Magnet Machines; Synchronous Generator Excitation; Thyristor Rectifiers; Chopper Rectifiers; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : The grid code, FIKS, from the Norwegian transmission system operator (TSO), Statnett, states that synchronous generators > 25MVA, must have a static excitation system. However, an improved brushless excitation system is in operation on some commercial power plants (36MVA, 93.75rpm & 52MVA, 166. LÄS MER

  3. 17. Design, synthesis and evaluation of spiro-bicyclo[2.2.2]octane derivatives as paclitaxel mimetics

    Författare :Sophie Manner; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; asymmetric baker s yeast reduction; paclitaxel; spiro; bicyclo[2.2.2]octane; paclitaxel mimetics;

    Sammanfattning : Nature contains an endless supply of natural products and has for long been a source of inspiration for the pharmaceutical industry. Many of the drugs currently in clinical use originate from natural products. LÄS MER

  4. 18. Synthesis and characterization of Pd nanoparticles for plastic plasmonic sensing applications

    Författare :Alicja Stolas; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; plasmon resonance; hydrogen sensing; polymers; nanoparticles;

    Sammanfattning : It is well known that hydrogen mixed with air forms a highly flammable mixture. There is an urgent need for selective and accurate sensors, since hydrogen very often serves as a fuel or energy storage medium. Given the fact that even the smallest leak can lead to an explosion, it is very important for sensors to be reliable and safe, i.e. LÄS MER

  5. 19. Synthesis and Characterization of Functional Polymers Based on Trimethylolpropane Trimethacrylate and Glycidyl Methacrylate

    Författare :Maria Walenius; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ethylhydroxyethyl cellulose derivative; trimethylolpropane; gels; compression; separation; pore surface; trimethacrylate; Copolymers;

    Sammanfattning : Copolymers of trimethylolpropane trimethacrylate (TRIM) and glycidyl methacrylate (GMA) were prepared with various monomer-to-solvent ratios, GMA to TRIM ratios and with various types of porogens. These parameters affected the inner morphology of the polymers and various pore surface areas (100-500 m2/g) and pore size distributions were obtained. LÄS MER

  7. 20. Lipoamidase

    Författare :Lennart Nilsson; Örjan Zetterqvist; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Lipoamidase, an enzyme which removes lipoic acid from the e-amino group of a lysine residue in 2-oxoacid dehydrogenase complexes, has been measured in human serum and breast milk, and in different rat tissues. Serum from a boy with biotinid~e deficiency had low lipoarnidase activity measured as lipoyl-lysine hydrolase (LLH) and lipoyl-PABA hydrolase (LPH). LÄS MER