Sökning: "mineral oil"

Visar resultat 1 - 5 av 50 avhandlingar innehållade orden mineral oil.

  1. 1. Pre-breakdown Phenomena in Mineral Oil Based Nanofluids

    Författare :Mauricio Aljure; Marley Becerra Garcia; Øystein Leif Gurandsrud Hestad; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Mineral oil is a dielectric liquid commonly used in high voltage equipment such as power transformers. Interestingly, it has been experimentally observed that the dielectric strength of the mineral oil is improved when nanoparticles are added. LÄS MER

  3. 2. Application of copper corrosion inhibitors in mineral oil : Surface analytical studies and corrosion mitigation evaluations

    Författare :Martina Levin; Christofer Leygraf; Per Redelius; Roy Johnsen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This doctoral thesis explores the copper corrosion inhibiting properties of a number of nitrogen containing hetero-organic compounds in refined mineral oil. Traditional organic corrosion inhibitors, as well as novel and bioorganic compounds have been studied. LÄS MER

  4. 3. Aspects of the role of mineral oil as immunological adjuvants in rheumatoid arthritis

    Författare :Berit Sverdrup; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Rheumatoid arthritis; adjuvant; mineral oil; experimental; DA rat; epidemiologic; cohort; case-control.;

    Sammanfattning : Environmental factors are likely contributing factors in the development of Rheumatoid Arthritis (RA), an autoimmune disease, for which etiologic factors are still poorly known. Mineral oils are efficient adjuvants which increase immunological responses and are used in animal immunization and for induction of different experimental autoimmune diseases including arthritis. LÄS MER

  5. 4. On the inception and propagation of streamers along mineral-oil/solid interfaces

    Författare :David Ariza; Marley Becerra; Olivier Lesaint; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis presents an experimental study of positive and negativestreamers propagating along mineral-oil/solid interfaces under square highvoltage pulses. The thesis includes the design and construction of anexperimental setup to studying the streamers in a point-plane configurationcapable to detect streamer parameters such as velocity, length, propagationtime, emitted light and charge. LÄS MER

  7. 5. Properties of oil and refrigerant mixtures : lubrication of ball bearings in refrigeration compressors

    Författare :Roger Tuomas; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Sammanfattning : A refrigeration compressor contains highly loaded mechanical contacts that have to be lubricated. The lubricant used in refrigeration compressors consists of an oil and refrigerant mixture, and the refrigerant concentration can be up to 40 wt%. LÄS MER