Sökning: "Sten Hellström"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Sten Hellström.

  1. 1. Granule-containing cells of rat carotid body and their biogenic amines : an electron microscopic and biochemical study

    Författare :Sten Hellström; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biogenic amines;

    Sammanfattning : .... LÄS MER

  3. 2. A reliability study of electronic components and electret foils, including latent failures due to submission to electrostatic discharges in a historical retrospective

    Författare :Sten Hellström; KTH; []
    Nyckelord :reliability; failure mechanism; acceleration tests; ESD; latent failure; ;

    Sammanfattning : This thesis deals with the reliability and life-time ofelectronic components and ways to determine these factors.Plastic encapsulated and open test circuits were assessed atdifferent humidity and temperature conditions. From the resultsan acceleration factor could be derived using the Arrheniusrelation. LÄS MER

  4. 3. External otitis and its treatment : is a group III steroid without antibiotics sufficent therapy? Experimental and clinical studies

    Författare :Per Emgård; Sten Hellström; Dan Bagger-sjöbäck; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; external otitis; external auditory canal EAC ; animal model; treatment; betamethasone; hydrocortisone; antibiotics; human study; Pseudomonas aeruginosa; Candida albicans.; Medicin; Dermatology and venerology; clinical genetics; internal medicine; Dermatologi och venerologi; klinisk genetik; invärtesmedicin; Oto-Rhino-Laryngology; oto-rhino-laryngologi;

    Sammanfattning : ABSTRACT External otitis and its treatment. Is a group III steroid without antibiotics sufficient therapy? – Experimental and clinical studies Per Emgård, Department of Otorhinolaryngology, University of Umeå and Ystad Hospital, Umeå and Ystad, Sweden External otitis is one of the most common ear, nose and throat (ENT) diagnoses in out-patient clinics. LÄS MER

  5. 4. Developing otitis media : experimental studies in particular regarding inflammatory changes in the tympanic membrane

    Författare :Per Olof Eriksson; Sten Hellström; Karin Prellner; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Otorhinolaryngology; otitis media with effusion; acute otitis media; myringotomy; tympanic membrane; rat; Streptococcus pneumoniae; compound 48 80; mast cell; Otorhinolaryngologi; Otorhinolaryngology; Otorhinolaryngologi; Oto-Rhino-Laryngology; oto-rhino-laryngologi;

    Sammanfattning : Otitis media (OM), one of the commonest of childhood diseases, causes much suffering. OM exists in a variety of forms, two of which are acute otitis media (AOM) and otitis media with effusion (OME). LÄS MER

  7. 5. Applications of Si1-xGex alloys for Ge devices and monolithic 3D integration

    Författare :Konstantinos Garidis; Per-Erik Hellström; Mikael Östling; Sten Vollebregt; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Silicon; germanium; epitaxy; selective; pn junction; germanium on insulator; GOI; Ge PFET; bonding; monolithic; sequential; three dimensional; 3D; low temperature; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : As the semiconductor industry moves beyond the 10 nm node, power consumption constraints and reduction of the negative impact of parasitic elements become important. Silicon germanium (Si1−xGex) alloys have been used to amplify the performance of Si based devices and integrated circuits (ICs) for decades. LÄS MER