Sökning: "electric conductivity"

Visar resultat 11 - 15 av 57 uppsatser innehållade orden electric conductivity.

  1. 11. Antenna Implants and Feasibility of Performance Limitations : AStudy of Radiation Efficiency on Electrically Small Antenna Implants with Finite Conductivity and Size

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

    Författare :Erik Algarp; [2022]
    Nyckelord :Antennaimplant; Medical Implant CommunicationSystem; Electrically small antenna; Electric dipole; Magnetic dipole; Fundamental bounds; Performance limits; Radiation efficiency; Conductor loss; Antennimplant; Medical Implant Communication System; Elektriskt små antenner; Elektrisk dipol; Magnetisk dipol; Fundamentala begränsningar; Prestandagränser; Strålningseffektivitet; Metallförlust;

    Sammanfattning : Antenna implants are used to establish a telemetry link to enable wireless data transfer, suitable for telemedicine and other medical applications. Inbody environments with water-based tissues lead to severe power absorption, making signal strength and radiation efficiency challenging yet central performance aspects of antenna implants. LÄS MER

  3. 12. Investigating the dynamics controlling dissolved organic matter bioreactivity in agricultural stream water and its link to carbon evasion : A statistical analysis

    Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Sara Schützer; [2022]
    Nyckelord :;

    Sammanfattning : While streams and rivers emit large quantities of CO2 to the atmosphere, both the mechanisms controlling CO2 evasion as well as the sources of CO2 are still uncertain. One potential source of stream CO2 is in-stream degradation of dissolved organic matter (DOM). LÄS MER

  4. 13. The impact of ion drift in a Transcutaneous Electrical Stimulation model

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Oscar Tuvesson; Erik Blåe; [2022]
    Nyckelord :TES; neuron activation; ion drift; conductivity; COMSOL; FEM; Technology and Engineering;

    Sammanfattning : A major area of research in neuroscience is the effect of stimulating nerves into activation from extrinsic stimuli. This is commonly done with electric currents and external skin-contact electrodes. LÄS MER

  5. 14. Assessment of a Sustainable Water-based Lubricant for Electric Drivelines : Lubrication and Cooling performance of a Water-based Lubricant

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Ugo Jantel; [2022]
    Nyckelord :Water-based Lubricant; Cooling; Driveline;

    Sammanfattning : In recent years, the impact of humans on the environment has been the subject of much debate. Car companies in particular are among the main actors in this environmental degradation with the polluting aspect of combustion cars. LÄS MER

  7. 15. Preparation and Experimental Investigation of the Tribological Properties of Conductive Grease Containing Ionic Liquids

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Gabriella Johansson Segervall; [2022]
    Nyckelord :Ionic liquids; bearing current; tribology; conductive grease;

    Sammanfattning : This thesis project was executed at ABB AB. The purpose of the thesis was to formulate aselection of ionic liquids with different thickeners as greases and experimentally understand thetribological characteristics and electrical properties. LÄS MER