Sökning: "Per Hillström"

Hittade 2 uppsatser innehållade orden Per Hillström.

1. 1. Erosion of materials in centrifugal separation

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

   Författare :Alexander Hillström; [2022]
   Nyckelord :Solid particle erosion; Erosion mechanism; Erosion testing;

   Sammanfattning : Centrifugal separation is a crucial piece of technology, used in a wide range of industries. In cases where solid particles are included in the working medium, erosive wear of componentsinside a centrifugal separator is one of the reasons limiting its service life. LÄS MER

3. 2. Sambanden mellan inandningsbara och fina partiklar i luften och insjuknande i stroke - poissonregressionsmodeller

   Magister-uppsats, Lunds universitet/Statistiska institutionen

   Författare :Jenny Hillström; Joselyne Nsabimana; [2009]
   Nyckelord :stroke; partiklar; Poissonregression; generaliserade linjära modeller; generaliserade additiva modeller; Statistics; operations research; programming; actuarial mathematics; Statistik; operationsanalys; programmering; aktuariematematik; Mathematics and Statistics;

   Sammanfattning : The purpose of this Master’s thesis is to model the short-term association between the number of strokes recorded per day and an increased daily mean level of particulate matter, PM. A short-term association means that the occurrence of stroke is related to the content of PM in the air the same day and up to seven days prior to the stroke (lag 0 to lag 7). LÄS MER