Sökning: "magnetfält experiment"

Visar resultat 11 - 15 av 15 avhandlingar innehållade orden magnetfält experiment.

  1. 11. Single-Electron Tunneling Spectroscopy in Magnetic Nanoparticles and Molecular Magnets

    Författare :Lukasz Michalak; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; master equation; magnetic nanoparticles; spin accumulation; molecular magnets; TMR; tunneling magnetoresistance; F-SET; ferromagnetic single-electron transistor; single-electron tunneling; nanomagnetism; spintronics; Coulomb blockade;

    Sammanfattning : This thesis deals with single-electron tunneling in transistor-like devices in which the central electrode is either a metal nanoparticle (possibly ferromagnetic) or a molecular magnet. The investigated systems split into two different categories, depending on the size of the central island. LÄS MER

  3. 12. MRI Perfusion Measurements using Magnetic Susceptibility Effects: : Calibration Approaches and Contrast Agent Quantification

    Författare :Emelie Lind; Lund Medicinsk strålningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; contrast agent; cerebral blood flow; cerebral blood volume; mean transit time; perfusion; dynamic susceptibility contrast MRI; magnetic susceptibility;

    Sammanfattning : Exchange of oxygen and nutrients between blood and tissue occurs at the capillary level of the blood system. The blood volume flow rate in the capillaries is often referred to as perfusion, and knowledge about perfusion provides important information about the function and viability of the tissue, for example, in patients with ischaemic stroke, cancer, and neurodegenerative diseases. LÄS MER

  4. 13. Industrial Alloys Studied by Surface Sensitive Techniques

    Författare :Lisa Rullik; Synkrotronljusfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aluminum alloy; brazing; AA 6063; duplex stainless steel; SAF 2507; XPS; APXPS; XPEEM; XRR; microstructure; aluminiumlegering; hårdlödning; AA 6063; duplexstål; SAF 2507; XPS; APXPS; XPEEM; XRR; mikrostruktur;

    Sammanfattning : This thesis reports on surface studies of industrial materials whose importance for society manifests in the vast range of applications. In industrial materials alloying is performed in order to improve the parent material's physical and mechanical properties such as strength, corrosion and wear resistance, as well as high temperature performance in comparison to the pure metal. LÄS MER

  5. 14. Stopover behaviour in migratory songbirds: timing, orientation and departures

    Författare :Sissel Sjöberg; Funktionell zoologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; flight duration; orientation; departure timing; stopover behaviour; stopover duration; flight behaviour; reverse migration; route choice; compass calibration; passerines; Bird migration;

    Sammanfattning : Songbird migrants use stopovers between flight bouts to rest and refuel for the upcoming flights. Behaviours affecting where, when and how long to stay at stopover sites will affect how successful the overall migration will be, which has significant consequences for the overall fitness and mortality of the birds. LÄS MER

  7. 15. EGF-like modules in blood coagulation proteins : Ca²+ binding, module interactions, structure and dynamics as studied by NMR spectroscopy

    Författare :Andreas Muranyi; Biofysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; residual dipolar couplings; protein S; factor VII; protein structure; calcium; blood coagulation; NMR spectroscopy; EGF modules; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : Modules are independently folding protein domains defined on the gene level. The epidermal growth factor-like (EGF) modules are involved in protein-protein interactions and are found in numerous membrane proteins and extracellular proteins, including many proteins of the blood coagulation system. LÄS MER