Sökning: "velander"

Hittade 3 avhandlingar innehållade ordet velander.

1. 1. Gene therapy in a new model of delayed wound healing

   Författare :Patrik Velander; Kirurgi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; IGF-1; Gene therapy; Diabetes; Animal model; EGF;

   Sammanfattning : Diabetes wounds result in significant morbidity, prolonged hospitalization and huge health care expenses. As of yet, no optimal animal models of diabetic wound healing exist to study potential beneficial therapies. Porcine wound healing is very similar to human wound healing. LÄS MER

3. 2. Hur blir djur mat? : En kritisk studie av den etiska djurproduktionen i svenska ekologiska organisationer

   Författare :Josefin Velander; Majken Jul Sørensen; Annika Jonsson; Karen Lykke Syse; Karlstads universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; animal studies; food animals; organic food sector; meat production; power knowledge relations; sustainability; ethics; human-animal relations; sociology of knowledge approach to discourse; subject object; Sociologi; Sociology; Sociologi; Sociology;

   Sammanfattning : Modern Western society is characterized by an increased consumption of animals, which has led to consequences in the form of an intensified exploitation of animals and the environment. The purpose of the dissertation is to examine the processes by which certain animals are made into food, and how power structures between humans and animals are maintained or challenged in Swedish organic organizations. LÄS MER

4. 3. On Gate Drivers for MOS-Controlled Power Devices and dv-dt Filters for Train Traction Converters

   Författare :Erik Velander; Hans-Peter Nee; Francesco Iannuzzo; KTH; []
   Nyckelord :Power semiconductor devices; DC-AC power converters; Silicon carbide; Insulated gate bipolar transistors; P-i-n diodes; Schottky diodes; Traction motors; Power MOSFET; Krafthalvledare; DC-AC kraftomvandlare; kiselkarbid; IGBT; P-i-n dioder; Schottky dioder; traktionsmotorer; Effekt-MOSFET; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : In this thesis, low-loss gate-drive solutions and a proposed dv/dt-filter have been investigated with focus on train traction converters with dv/dt constraints.By using the silicon carbide (SiC) junction field-effect transistor (JFET), the switching losses can be significantly reduced compared to the commonly used insulated-gate bipolar transistor (IGBT), but complex gate-driver solutions are required for high utilization in terms of loss reduction. LÄS MER