Sökning: "resistivitet"

Visar resultat 1 - 5 av 51 uppsatser innehållade ordet resistivitet.

  1. 1. Geological 3D Modelling ofthe File Hajdar Quarry, Slite

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Friberg Nils; [2023]
    Nyckelord :3D-modelling; Cementa; limestone; resistivity; Gotland; 3D-modellering; Cementa; kalksten; resistivitet; Gotland;

    Sammanfattning : Located on the island of Gotland, Sweden, the File Hajdar limestone quarry is an important locality for domestic cement production. With depositional settings generally related to shallow sea carbonate ramps, the lithologies encountered on File Hajdar range from reef-associated limestone units to more basinal deposition of marls. LÄS MER

  3. 2. First principles investigation of the thermal conductivity of Zr, ZrC, and ZrN

    Master-uppsats, KTH/Fysik

    Författare :Daniel Karlsson; [2023]
    Nyckelord :Electron-phonon interaction; Density functional theory; Boltzmann transport equation; first-principles; thermal conductivity; electrical resistivity; Abinit; Phono3py; Elektron-fononväxelverkan; täthetsfunktionalteori; Boltzmanns transportekvation; värmeledningsförmåga; elektrisk resistivitet; Abinit; Phono3py;

    Sammanfattning : The thermal conductivity and electrical resistivity of Zr, ZrC, and ZrN were calculated using first-principles density functional theory (DFT) and the Boltzmann transport equation. The electron-phonon scattering was modeled via the self-energy relaxation time approximation (SERTA), and the phonon-phonon scattering via the analogous single-mode relaxation time approximation (SMRTA). LÄS MER

  4. 3. The Influence of Roughness on Electrical Properties of Single Rock Fractures

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

    Författare :Yu Hou; [2023]
    Nyckelord :Single fracture; Roughness; Current; Electrical properties; Relative standard deviation; Numerical simulations; Enkelfraktur; Grovhet; Ström; Elektriska egenskaper; Relativ standardavvikelse; Numeriska simuleringar;

    Sammanfattning : To investigate the relationship between the structural characteristics of rough single fracturesand the electrical properties of the rock. In this study, a series of physical models of roughand smooth single fractures were established using the finite element method and Ohm's lawto test the electrical conductivity. LÄS MER

  5. 4. Design of 3D-Printed Components : Resistances, Strain Gauges and Touch sensors

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

    Författare :Joar Forsberg; [2022]
    Nyckelord :3D-printing; FFF; Conductive PLA; Strain Gauge; Touch sensor; 3D-printing; FFF; Konduktiv PLA; Töjningsgivare; Vidröringssensor;

    Sammanfattning : Additive manufacturing has recently become an increasingly available, affordable, and versatile technology for industry and enthusiasts alike. One opportunity that this provides is using conductive filament to print electronic sensors and components. LÄS MER

  7. 5. Developing data processing program for a new radio magnetotelluric (RMT) instrument

    Kandidat-uppsats, Uppsala universitet/Geofysik

    Författare :Elis Uebel; [2022]
    Nyckelord :RMT radio magnetotellurics matlab GUI;

    Sammanfattning : The radio magnetotellucic (RMT) method originates from (Tikhonov, 1950) and (Cagniard,1953) who discovered the possibility to estimate resistivity in the Earth’s subsurface using naturally occurring telluric currents. This through measuring the surface impedance of electromagnetic waves. LÄS MER