Sökning: "penetration depth"

Visar resultat 6 - 10 av 71 uppsatser innehållade orden penetration depth.

  1. 6. Improving the experimental setup for ultrasound-optical tomography imaging

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Ibtisam Dahir Ahmed; [2023]
    Nyckelord :Ultrasound-optical tomography UOT ; thulium-doped lithium niobate;

    Sammanfattning : According to Bröstcancer förbundet, mammography is not efficient at detecting tumors in dense breast tissue or diagnosing breast cancer at its early stages. Ultrasound-optical tomography (UOT) is an imaging technique in development and has the potential for deep-tissue imaging. LÄS MER

  3. 7. 2 + 1 Dimensional Chern-Simons Theory for Landau-Ginzburg Theory

    Kandidat-uppsats,

    Författare :Adam Fredriksson; [2023]
    Nyckelord :2 1 dimensional Chern-Simons theory; superconductivity.;

    Sammanfattning : In this work, 2 + 1 dimensional Chern-Simons theory have been used in an attempt to describe superconductivity. It was examined if the two defining properties of superconductivity, infinite direct current (DC) conductivity and the Meissner effect, as well as the two characteristic length scales of superconductors, the London penetration depth and the coherence length, could be obtained. LÄS MER

  4. 8. Geological characterization of rock samples by LIBS and ME-XRT analytical techniques

    Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Nsioh Elvis Nkioh; [2022]
    Nyckelord :geological characterization; analytical techniques; LIBS; ME-XRT; SEM; element maps; SEM-EDS; secondary electrons; rock samples; automated ore microscopy; SEM-Zeiss Merlin; element weight percentages; element oxide percentages; scanning techniques; analytical methods; laser induced breakdown spectrometry; multi energy x-ray transmission; scanning electron microscope; carbon coating; mineralogical classification; element composition; rock chemistry; rock chemical composition;

    Sammanfattning : One of the major challenges in earth sciences and mineral exploration has been to determine with high accuracy and at a fast rate the elemental composition as well as the general chemistry of a rock sample. Many analytical techniques e.g. LÄS MER

  5. 9. Applicerbarhet av Scaled Reassigned Spectrogram for Transient Signals (ReSTS) på ultraljudssignaler från biologisk vävnad

    Kandidat-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Sara Florentsson; Anna Hollsten; [2022]
    Nyckelord :Ultrasound; resolution; biological tissue; signal processing; Technology and Engineering;

    Sammanfattning : The possibility of being able to examine the inside of the human body is the foundation of today’s medical diagnostics. This can be done through different imaging systems, where ultrasound is one of the most important imaging methods used. LÄS MER

  7. 10. Solcellers påverkan på den framtida stadsbilden : - Får vi annorlunda hus av solceller?

    Kandidat-uppsats, Jönköping University/JTH, Byggnadsteknik och belysningsvetenskap

    Författare :Maryzabel Moucha; Moa Strandberg; [2022]
    Nyckelord :Solar cells; Future urban planning; Future architecture; New era.; Solceller; Grön energi; Framtida stadsplanering; Framtida arkitektur; Ny tidsepok.;

    Sammanfattning : Introduction – With the rising of the electricity prices around the world and simultaneously higher standards on sustainability and environment on buildings, more people have begun thinking of better means of electricity supply. Solar cells have become a popular and more discussed topic that can justify for both an economical and sustainable perspective. LÄS MER