Sökning: "Pulsed electric fields"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Pulsed electric fields.

  1. 1. Pulsed Electric Field Food Treatment and Low Frequency Bioelectromagnetics

    Detta är en avhandling från Chalmers University of Technology

    Författare :Martin Lindgren; Chalmers tekniska högskola.; Chalmers University of Technology.; [2001]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; pulsed electric fields; electric field distribution; treatment chambers; non-thermal microbial inactivation; electromagnetic fields; magnetic fields; biological effects; extremely low frequency;

    Sammanfattning : This thesis is divided in two parts, both of which address the interaction between biological cells (especially cell membranes) and electromagnetic fields. The first part deals with the application of intense pulsed electric fields (PEF) in foods. It is intended to be a non-thermal method to inactivate microorganisms. LÄS MER

  2. 2. Effects of Pulsed Electric Fields on Plant Tissue

    Detta är en avhandling från Food Technology, Lund University

    Författare :Yongyut Chalermchat; Lunds universitet.; Lund University.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technological sciences; Electropermeabilization; Pulsed electric fields; Plant Tissue; Teknik;

    Sammanfattning : The interaction between biological cells and external electric fields has been of interest by scientists for several decades. Exposure of the cells to electric fields leads to various kinds of biophysical and biochemical responses. These responses can be used to characterize cell properties and/or to manipulate cell characteristics. LÄS MER

  3. 3. Inactivation, Cell Injury and Growth of Microorganisms Exposed to Pulsed Electric Fields Using a Continuous Process

    Detta är en avhandling från Chalmers University of Technology

    Författare :Kristina Aronsson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioteknik; Bioengineering; pulsed electric fields; PEF; microbial inactivation; Escherichia coli; Listeria innocua; Leuconostoc mesenteroides; Saccharomyces cerevisiae; membrane permeabilization; cell injury; flow-through treatment chamber; post-processing growth;

    Sammanfattning : Pulsed electric fields (PEF) is a proven technology to inactivate microorganisms under non-thermal conditions. The PEF technology has a potential as a "quality friendly" alternative to traditional methods of food preservation. LÄS MER

  4. 4. Effects of ionising and non-ionising radiation in cell systems and a rat model for immuno-therapy

    Detta är en avhandling från Neurosurgery

    Författare :Catrin Baureus Koch; Lunds universitet.; Lund University.; [2005]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Kirurgi; ortopedi; traumatologi; Neurology; traumatology; transplantation; Surgery; orthopaedics; cell cultures; abscopal effect; serologi; Immunologi; serology; Immunology; rat tumour model; radiation therapy; radiation sterilisation; pulsed electric fields; interferon-gamma; immuno-gene therapy; neuropsychology; neurophysiology; Neurologi; neuropsykologi; neurofysiologi; glioblastoma multiforme;

    Sammanfattning : The most malignant brain tumour, glioblastoma multiforme (GBM), has an utterly bad prognosis. In spite of all available therapy, the mean survival time is less than a year. In the unique BRIGTT project (Brain Immuno Gene Tumour Therapy), patients at the Dept of Neurosurgery. LÄS MER

  5. 5. Microwave Breakdown: Physics and Applications

    Detta är en avhandling från Chalmers University of Technology

    Författare :Ulf Jordan; Chalmers tekniska högskola.; Chalmers University of Technology.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; microwave breakdown; breakdown plasma; waveguides; resonators; metal wedges; HPM protection;

    Sammanfattning : Theories for microwave breakdown in gases, with emphasis on Air, are presented in this thesis. Underlying physical processes are described together with models suitable for scientific research and technical development. LÄS MER