Sökning: "Variability"

Visar resultat 1 - 5 av 775 uppsatser innehållade ordet Variability.

  1. 1. Combining Smart Energy Storage with a Nordic PV Park : An explorative study of revenue-improving and cost-reducing battery services

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Byggteknik och byggd miljö

    Författare :Amanda Bränström; Jonna Söderberg; [2021]
    Nyckelord :battery storage; energy storage; PV park; primary frequency regulation; energy arbitrage; NPV; VRE; Li-ion; service stacking;

    Sammanfattning : With global climate change as the main driver, there is an increase towards including more variable renewable energy (VRE) sources in the electricity mix. Energy production from utilizing the photovoltaic effect, or PV power, is increasing rapidly and is visioned to cover 5 – 10 % of Sweden’s electricity demand in 2040. LÄS MER

  3. 2. Spatial Variability in the Ionosphere and GNSS Signal Delays in the L-band: A Direct Comparison of In-Situ Satellite- and Swepos-Data

    Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Författare :Oscar Suneson; [2021]
    Nyckelord :fysik; jonosfären; GNSS; GPS; astrofysik; navigationssystem; mätteknik;

    Sammanfattning : It has been shown that ionospheric irregularities can disturb our GNSS (Global Navigation Satellite System) communication. This disturbance is caused by scintillation of the radio signals when they pass through the ionosphere, leading to lock-on difficulties or in worst case, a loss of position for the GNSS-receiver. LÄS MER

  4. 3. A DMAIC based framework to conduct Measurement System Analysis : A case study at Northvolt AB

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Anshuman Manickam Vinoth; [2021]
    Nyckelord :;

    Sammanfattning : The aim of the project was to develop a framework for the execution of a Measurement System Analysis (MSA) which would help determine capability of a measurement system. The strategy behind carrying out this thesis has been to draft a framework which is based on the Define, Measure, Analyze, Improve, Control (DMAIC) model for a Measurement System Analysis (MSA) which would enable to gain a better understanding of the capability of measurement instruments that are used to control the quality of production processes of lithium-ion batteries. LÄS MER

  5. 4. Antibiotic Susceptibility Testing: Effects Of Variability In Technical Factors On Minimum Inhibitory Concentration Using Broth Microdilution

    Master-uppsats, Uppsala universitet/Institutionen för medicinsk biokemi och mikrobiologi

    Författare :Seemal Aziz; [2021]
    Nyckelord :Antibiotic susceptibility settings; broth microdilution; antimicrobial resistance; minimum inhibitory concentration; MIC; AST; Sepsis;

    Sammanfattning : Background Broth microdilution (BMD) is a gold-standard reference method to determine minimum inhibitory concentration (MIC) of antibiotics. For this, a standardized concentration of bacterial inoculum (2e5–8e5 colony-forming units, CFU/ml) is added to progressively higher concentrations of antibiotics. LÄS MER

  7. 5. Greenhouse gas emissions from three large lakes during the autumn 2020

    Kandidat-uppsats, Linköpings universitet/Institutionen för tema

    Författare :Veronica Bohlin; Anja Anderö Nordqvist; [2021]
    Nyckelord :methane; carbon dioxide; dissolved inorganic carbon; pCO2; flux chambers; large lakes; methane budget; carbon budget; GHGs; freshwater; spatiotemporal; ebullition; diffusion; autumn; metan; koldioxid; upplöst oorganiskt kol; pCO2; kammarmetod; stora sjöar; metanbudget; koldioxidbudget; växthusgaser; sötvatten; spatiotemporal; ebullition; diffusion; höst;

    Sammanfattning : Methane (CH4) and carbon dioxide (CO2) are two greenhouse gases and main drivers of global climate change. Lakes are known to be a source of CH4 and CO2 to the atmosphere. While the importance of these emissions is clear, their magnitudes and regulation are still uncertain due to the scarcity of flux measurement data from lakes. LÄS MER