Sökning: "Dynamic stress"

Visar resultat 1 - 5 av 135 uppsatser innehållade orden Dynamic stress.

  1. 1. Off-State Stress Effects in AlGaN/GaN HEMTs : Investigation of high-voltage off-state stress impact on performance of and its retention in hybrid-drain ohmic gate AlGaN/GaN HEMTs

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ivan Krsic; [2023]
    Nyckelord :HEMT; GaN; off-state stress; memory effects; drain leakage current; dynamic RDSon; threshold voltage instabilities; charge redistribution; HEMT; GaN; stress i avslaget tillstånd; minneseffekter; läckströmmen; dynamisk RDSon; instabiliteten hos styrets tröskelspänning; omfördelningen av laddningar;

    Sammanfattning : High electron mobility transistors (HEMTs) realized using AlxGa1-xN/GaN are relatively new technology which is prominent for high-speed and high-power applications. Some of the main problems with this technology were identified as dynamic RDSon, current collapse and threshold voltage instabilities due to the off-state stress. LÄS MER

  3. 2. Energy in the Transportation System - A comparison of charging infrastructure scenarios

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Judith Lai Jakobsson; [2023]
    Nyckelord :Charging infrastructure; road transport electrification; battery capacity need; electric vehicles; Technology and Engineering;

    Sammanfattning : A functioning charging infrastructure is crucial for achieving full-scale national electrification within the transport sector. The system is likely to consist of different charging technologies, all with the main objective of providing efficient energy replenishment services. LÄS MER

  4. 3. Konstruktionsanalys av lastbilsbotten : En jämförelse av stålbotten och sandwichbotten

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :Ellen Wester; Louise Stålnacke; Emma Badak; [2023]
    Nyckelord :design analysis; bottom structure; sandwich structure; FE- analysis; truck body work; FEM; konstruktionsanalys; bottenkonstruktion; sandwichkonstruktion; FE- analys; lastbilspåbyggnation; FEM;

    Sammanfattning : The structure and design of truck body work can look in several different ways. SpecialKarosser AB is one of the leading companies in Scandinavia when it comes to specially adapted truck body work. The body works are designed to carry different types of loads. LÄS MER

  5. 4. Change Management Communication for Retail Store Managers : An in-depth qualitative interview study on retail store manager communication during change processes

    Magister-uppsats, Jönköping University/IHH, Företagsekonomi; Jönköping University

    Författare :Oliver Dadari Forsebrand; Benjamin Glas; [2023]
    Nyckelord :Retail Store Manager; Retail; Communication; Change Management; Change Management Communication; Middle Manager;

    Sammanfattning : Background: In today's dynamic business environment, organizations face high pressure for change and adaptation. It is generally perceived that change is inevitable and many believe that change is an ongoing and never-ending process. LÄS MER

  7. 5. Methods to study device induced aggregation of proteins

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Marie Therese von Wowern; [2023]
    Nyckelord :protein formulation; protein aggregation; insulin; silicone oil; syringe; shear stress; subvisible particle; size exclusion chromatography; flow imaging microscopy; pharmaceutical technology; Technology and Engineering;

    Sammanfattning : This work developed a method for the investigation of how medical devices, such as syringes and needles, affect the formation of subvisible particles in a protein drug without excipients. Protein-based pharmaceuticals are well known to be sensitive to different kinds of stress, and exposure to stress during the use of this device is unavoidable. LÄS MER