Sökning: "Bertil Hök"

Hittade 4 avhandlingar innehållade orden Bertil Hök.

  1. 1. Bioacoustic principles used in monitoring and diagnostic applications

    Författare :Peter Hult; Bertil Hök; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : The idea behind this work is linked to the experience gained from the long use of the stethoscope, and to the fact that sound originating from the body is a mechanical fingerprint, reflecting the human body functions.The aims of this thesis have been to develop bioacoustic systems using modern medical signal processing in three applications. LÄS MER

  3. 2. Pressure sore etiology - highlighted with optical measurements of the blood flow

    Författare :Annika Jonsson; Ylva Bäcklund; Maria Lindén; Margareta Lindgren; Bertil Hök; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Elektronik; Elektronik;

    Sammanfattning : In line with the quality awareness of good prevention of pressure sores and in treatment of those sores already developed, evaluation of antidecubitus mattresses plays an important role. However, there are shortages in the evaluations performed today, since often interface pressure is the only parameter regarded. LÄS MER

  4. 3. Microfluidic Devices for Manipulation and Detection of Beads and Biomolecules

    Författare :Mats Jönsson; Ulf Lindberg; Bertil Hök; Johan Nilsson; Uppsala universitet; []
    Nyckelord :Engineering physics; sensor; micro; dielectrophoresis; impedance; electrode; beads; cell; flow; bacteria; microfabrication; biosensor; electrocapture; microfluidic; planar; Lab on chip; µTAS; micro total analysis system; QCM; dispersion; field-flow fractionation; ITO; design; fabrication; Teknisk fysik;

    Sammanfattning : This thesis summarises work towards a Lab-on-Chip (LOC). The request for faster and more efficient chemical and biological analysis is the motivation behind the development of the LOC-concept. Microfluidic devices tend to become increasingly complex in order to include, e.g. LÄS MER

  5. 4. Improved breath alcohol analysis with use of carbon dioxide as the tracer gas

    Författare :Annika Kaisdotter Andersson; Mikael Ekström; Bertil Hök; Göran Hedenstierna; Johannes Lagois; Mälardalens högskola; []
    Nyckelord :elektronik; Electronics;

    Sammanfattning : State-of-the-art breath analysers require a prolonged expiration into a mouthpiece to obtain the accuracy required for evidential testing and screening of the alcohol concentration. This requirement is unsuitable for breath analysers used as alcolock owing to their frequent use and the fact that the majority of users are sober drivers; as well as for breath testing in uncooperative persons. LÄS MER