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Visar resultat 1 - 5 av 35 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Processing techniques of perovskite solar cells : Properties depending on material and manufacturing

    Kandidat-uppsats, Uppsala universitet/Fysikalisk kemi

    Författare :Andréa Nordmark; Simon Nilsson; [2023]
    Nyckelord :;

    Sammanfattning : This project investigates how different types of perovskite solar cells, differentiated by choice of materials and processing techniques, compares to each other regarding performance and characterization. The purpose of the project is to further develop perovskite solar cells and to improve the method of manufacturing for better performance. LÄS MER

  3. 2. Uncertainty quantification for offshore wind turbines

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Ziming Wang; [2022]
    Nyckelord :wind energy; uncertainty propagation; polynomial chaos; Rosenblatt transformation; quadrature; regression; vindenergi; osäkerhetsutbredning; polynomkaos; Rosenblatt transformation; kvadratur; regression;

    Sammanfattning : Wind energy is a field with a large number of uncertainties. The random nature of the weather conditions, including wind speed, wind direction, and turbulence intensity, influences the energy output and the structural safety of a wind farm, making its performance fluctuate and difficult to predict. LÄS MER

  4. 3. Non-Standard Article Use in Pakistani English : An Attitudinal Study

    Kandidat-uppsats, Högskolan i Gävle/Avdelningen för humaniora

    Författare :Ninni Bergström; [2022]
    Nyckelord :World Englishes; Pakistani English; non-standard article use; language attitudes;

    Sammanfattning : This essay explores Pakistani English teachers’ attitudes towards non-standard article use in Pakistani English. It uses the theories of Kachru (1985), Modiano (1999a, 1999b, 2020) and Schneider (2003, 2007) on World Englishes as well as previous research on Pakistani English. LÄS MER

  5. 4. Design of radio frequency energy harvesting system : for use in implantable sensors

    Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System; Linköpings universitet/Tekniska fakulteten

    Författare :Amir Ebrahimi; David Kihlberg; [2022]
    Nyckelord :RF energy harvesting; RF rectifier; efficiency; voltage sensor; voltage doubler;

    Sammanfattning : Implantable biomedical wireless sensors provide monitoring of vital health signs such as oxygen, temperature and intraocular pressure and may help to analyse and detect diseases in humans and animals. However, one of the design challenges of implantable devices is providing a safe and reliable energy source. LÄS MER

  7. 5. Modelling of Fluid Flow and Contaminant Transport in Fractured Rock : Case Study

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Ebba Pegestam; [2022]
    Nyckelord :Contaminant transport; Discrete Fracture Network; Geology; Geohydrology; Groundwater transport; Fracture; Drinking water; Contamination; Föroreningar; flödestransport; spricknätverk; geologi; geohydrologi; grundvattentransport; sprickor; dricksvatten;

    Sammanfattning : Drinking water contamination is a big concern in Sweden and is commonly traced back to being waste from former manufacturing industrial sites. Pollutants in the topsoil can be remediated by several techniques, such as decontamination or excavation but the toxins already enclosed in the bedrock cannot be treated the same and is harder to track possible contaminant pathways. LÄS MER