Sökning: "MV"
Visar resultat 1 - 5 av 153 uppsatser innehållade ordet MV.
1. AC Gate Bias Stress of 4H-SiC MOSFETs : An investigation into threshold voltage instability of SiC Power MOSFETs under the influence of bipolar gate stress
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Silicon Carbide, a wide band gap (WBG) semiconductor, has pushed electrical limits beyond Silicon (Si) when it comes to power electronics. It has offered the electrification of society showing promise for a greener future. LÄS MER
2. Ventilation for reduced indoor spread of Covid 19 and similar diseases : A literature review focusing on hospital environments
Master-uppsats, Högskolan i Gävle/Energisystem och byggnadsteknikSammanfattning : Today, a significant portion of individuals’ time is spent indoors, estimated at approximately 90% of their total time. This raises concerns about the transmission of Coronavirus Disease 2019 (COVID-19) instigating Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) and similar viruses and highlights the critical role of ventilation systems in indoor environments, which this study aims to investigate. LÄS MER
3. Bastubadets påverkan på upplevd återhämtning efter högintensiv träning : En singel subjekt experimental A-B-A design pilotstudie
Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för hälsa, lärande och teknikSammanfattning : Bakgrund: En kvalitativ återhämtning skapar förutsättningar för superkompensation av kroppsdelar och påskyndar därmed rehabilitering av rörelseapparaten. Mental stress hög fysisk ansträngning och dålig sömnkvalitet utmanar kroppens förmåga till återhämtning. LÄS MER
4. Towards a setup for narrowband terahertz generation through difference-frequency mixing of chirped ultrashort pulses
Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenSammanfattning : Terahertz radiation is a useful tool for inducing lower-energy excitations in matter, where it can be used to cause structural changes through direct interaction with the crystal lattice. Sub-picosecond optical pulses can be used to generate intense broadband terahertz pulses through optical rectification in nonlinear crystals, reaching peak electric fields of several MV/m and conversion efficiencies as high as a few percent. LÄS MER
5. Radiation Effects on GaN-based HEMTs for RF and Power Electronic Applications
Master-uppsats, KTH/Tillämpad fysikSammanfattning : 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