Sökning: "Duplex scanning"

Hittade 5 uppsatser innehållade orden Duplex scanning.

  1. 1. Aspects of erosion of restored trout spawning beds in two streams in Northern Sweden

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Frida Michelle Granlund; [2021]
    Nyckelord :in-stream restoration; reproductive habitat; salmonids; passive integrated transponders tags PIT-tags ;

    Sammanfattning : Many rivers and streams in northern Sweden have been channelized due to timber floating. This has severely degraded the spawning habitats for salmon and trout, and therefore a common action when restoring channelized rivers is to establish new spawning beds by adding gravel to the streambed. LÄS MER

  3. 2. Characterization of Stainless Steel Welding Fume Particles : Influence of Stainless Steel Grade, Welding Parameters and Particle Size

    Master-uppsats, KTH/Materialvetenskap

    Författare :Nanxuan Mei; [2016]
    Nyckelord :welding fume; stainless steel; chromium; manganese; particles;

    Sammanfattning : Welding is a widely used method to join two pieces of stainless steel. Since it produces a large amount of fume during the process, it can cause adverse health effects. The welding fume particles contain many elements. Among them Cr, Mn and Ni are of concern. LÄS MER

  4. 3. Interobserver variability of peak systolic velocity measurements in the common carotid artery

    Kandidat-uppsats,

    Författare :Ewelina Antonijev; Frida Åstrand; [2016]
    Nyckelord :carotid stenosis; stroke; Doppler; ultrasound; duplex; Vietnam;

    Sammanfattning : Stroke is ranked as the number one cause of death in Vietnam and the second leading cause of death in the world. Stenosis in the carotid arteries is one of the major risk factors for stroke, making it extremely important to confirm the diagnosis. LÄS MER

  5. 4. Sliding wear performance of electroplated hard chromium and autocatalytic nickel-phosphorus coatings at elevated temperatures

    Master-uppsats, Karlstads universitet/Avdelningen för maskin- och materialteknik

    Författare :Mats Eriksson; [2014]
    Nyckelord :Tribology; sliding wear; hard chrome; electroless nickel;

    Sammanfattning : This thesis was written for a Swedish valve manufacturer to find out in what temperature regimes it was possible to replace electroplated hard chromium with autocatalytic electroless nickel-phosphorus. In this work the dry sliding wear properties of electroplated hard chromium and autocatalytic electroless nickel-phosphorus(10% P) were compared. LÄS MER

  7. 5. Blodtrycksmanschett eller manuell handkompression vid bedömning av venös insufficiens i Vena saphena magna

    Kandidat-uppsats, Örebro universitet/Hälsoakademin

    Författare :Jonna Meerits; [2011]
    Nyckelord :Duplex scanning; pneumatic compression; reflux velocity; saphenous vein; venous insufficiency.;

    Sammanfattning : Bakgrund: Venduplex har på senare år vuxit fram som den mest använda metoden vid diagnostik av venös insufficiens eftersom det är en ofarlig, kostnadseffektiv, non-invasiv metod med hög sensitivitet och specificitet där både den anatomiska placeringen av insufficiensen samt den funktionella förändringen av venen kan påvisas direkt vid undersökningen. Olika manövrar kan genomföras för att påfresta venklaffarna och därmed framkalla en eventuell reflux, men det är oklart om de olika manövrerna kan påverka den reflux som provoceras fram och därmed också påverkar bedömningen av insufficiensgraden. LÄS MER