Sökning: "electric conductivity"

Visar resultat 1 - 5 av 40 uppsatser innehållade orden electric conductivity.

  1. 1. Acid sulphate soils and its influence on metal concentrations in adjacent water bodies. - A case study from Halland, SW Sweden

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Amanda Lindgren; [2021-03-10]
    Nyckelord :acid sulphate soils; metal distribution; surface water; climate; physicochemistry;

    Sammanfattning : Acid sulphate soils have been referred to as being among the most harmful soils in the worlddue to their ability to severely decrease the pH of the water, consequently enabling an increasedmetal load to recipient water streams, lakes, groundwater reservoirs and estuaries. The presenceof acid sulphate soils has triggered several fish kill episodes in northern Scandinavia and thesoils are today threatening many of the national environmental goals of Sweden. LÄS MER

  2. 2. Utvärdering av kommersiell TEG-enhet på en värmeplatta : Generering av elektricitet från temperaturskillnader

    Kandidat-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Andreas Svensson; [2021]
    Nyckelord :Energy technology; Seebeck effect; TEG; waste heat; wood-burning stove; fluid mechanics; thermodynamics; power; current; voltage; electrical engineering; heat plate; Energiteknik; Seebeckeffekt; TEG; spillvärme; vedkamin; strömningslära; termodynamik; effekt; ström; spänning; värmeplatta; ellära;

    Sammanfattning : Att minska energianvändningen är något det pratats mer och mer om de senaste åren. Det finns olika sätt att minska energianvändningen på och ett av dessa är att återvinna värmeenergi. Det kan gälla både spillvärme och nyttig värme. Detta går att tillämpa i industrin, transportsektorn, hushåll och till vardags. LÄS MER

  3. 3. HfO2 and ITO Resistive Random-Access Memory

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Mattias Åstrand; [2020]
    Nyckelord :RRAM; Resistive switching; HfO2; ITO; Physics and Astronomy;

    Sammanfattning : The purpose of this work is of evaluating the choice of HfO2 and ITO as the dielectric and the top electrode in high performance resistive random-access memory (RRAM), respectively. The study is twofold, as it quantifies performance according to standard figures of merit for this technology, as well as provides insight into the physics of current conduction for this material choice. LÄS MER

  4. 4. The effect of spent mushroom (Agaricus bisporus) compost on the indigenous rhizosphere microbiota in strawberry cultivation

    Master-uppsats, SLU/Department of Agricultural Biosystems and Techology

    Författare :Hani Elaamer; [2020]
    Nyckelord :Trichoderma spp; Actinomyces spp; Pseudomonas spp; Bacillus spp;

    Sammanfattning : Spent mushroom compost (SMC) is a by-product of mushroom cultivation with the potential to be used in the cultivation system to suppress plant pathogens, enhance water holding capacity, increase soil water aeration and to improve the soil structure through the input of organic matter and additional nutrients. The electric conductivity (EC) as well as pH recorded high values in the SMC, which is a challenge for its application in food production systems. LÄS MER

  5. 5. Konceptutveckling av DC-kontaktor : Tillämpbar inom EV-charging

    Master-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik; Mälardalens högskola/Akademin för innovation, design och teknik

    Författare :Jonathan Hillström; Linus Gustafsson; [2020]
    Nyckelord :DC contactor; EV charging; Electrification; DC-kontaktor; EV-charging; Elektrifiering;

    Sammanfattning : This is a master thesis project carried out during a 20-week period in the spring of 2020 and that corresponds to 30 credits. The project covered concept development of a contactor (switch for controlling high current). LÄS MER