Sökning: "Per Ångström"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Per Ångström.

  1. 1. Radiation Effects on GaN-based HEMTs for RF and Power Electronic Applications

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Wilhelm Holmberg; [2023]
    Nyckelord :High Electron Mobility Transistor; HEMT; Gallium Nitride; GaN; Silicon Carbide; SiC; Proton Radiation; Galliumnitrid; GaN; Kiselkarbid; SiC; Kisel; Si; HEMT; Transistor; Protonstrålning;

    Sammanfattning : GaN-HEMTs (Gallium Nitride-based High Electron Mobility Transistors) have, thanks to the large band gap of GaN, electrical properties that are suitable for applications of high electrical voltages, high currents, and fast switching. The large band gap also gives GaN-HEMTs a high resistance to radiation. LÄS MER

  3. 2. An Investigation of Cefadroxil and Meropenem’s Supply Chain and Estimationof the Health Economic Consequences in Sweden due to Shortage

    Kandidat-uppsats, Uppsala universitet/Institutionen för kemi - Ångström

    Författare :Christine Attemalm; Jonathan Efverström; Dania Elkhalifa; Viktor Hansen; Yasmine Sundelin Tjärnström; [2020]
    Nyckelord :cefadroxil; meropenem; supply chain; backorders; Swedish healthcare;

    Sammanfattning : Sweden has been increasingly affected by drug shortage and the public healthcare system has identified a large amount of antibiotics risking shortage. Drug shortage of antibiotics is a worldwide problem with complex causes and consequences affecting many countries healthcare systems. LÄS MER

  4. 3. Improving thermal fracture resistance in ceramic microcomponents for spacecraft propulsion

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Ångström Space Technology Centre (ÅSTC)

    Författare :Erika Åkerfeldt; [2018]
    Nyckelord :HTCC; MEMS; MST; microthruster; thermal fracture;

    Sammanfattning : Because of thermal transients and gradients occurring upon rapid heating or cooling, microcomponents made from High-Temperature Co-fired Ceramics (HTCC) often fail at temperatures far below what the materials can withstand per se. This work investigates how resistance to thermal fracture in HTCC microcomponents can be increased by improving the component design, aiming at increasing the thermal performance of a microthruster with integrated heaters. LÄS MER

  5. 4. Elbesparingar i laboratorieintensiva byggnader : En fallstudie av Ångströmlaboratoriet

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets fysik

    Författare :Per Ekström; [2016]
    Nyckelord :Elbesparing laboratorie;

    Sammanfattning : Energy consumption in buildings is an important matter for thefuture. In order to reach a sustainable future, both new and oldbuildings must become more energy efficient. This thesisinvestigates how the electricity consumption can be reduced inexisting buildings containing laboratories. This project had twomajor goals. LÄS MER

  7. 5. Can macroeconomic factors explain the choice of capital structure? - A study of listed non-financial firms in Sweden

    Master-uppsats, Uppsala universitet/Företagsekonomiska institutionen

    Författare :Aida M.Zein; Per Ångström; [2016]
    Nyckelord :Capital Structure; Macroeconomic Factors; Leverage; Panel Data Regression;

    Sammanfattning : This study investigates the impact macroeconomic factors have on corporate capital structure in Sweden. We use a panel data analysis of unbalanced data for the sample period, 2005-2014. LÄS MER