Sökning: "ASSEMBLIES"

Visar resultat 11 - 15 av 209 avhandlingar innehållade ordet ASSEMBLIES.

  1. 11. Temperature programmed studies of molecular assemblies on gold

    Författare :Mattias Östblom; Sven Oscarsson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis investigates the properties of ultra-thin layers of organic molecules deposited at or adsorbed onto thin films of gold. The two main experimental techniques used in this thesis work are Temperature Programmed Desorption-Infrared Reflection Absorption Spectroscopy (TPD-IRAS), an excellent technique to probe the structure and orientation of molecular layers on metallic substrates, and Temperature Programmed Desorption-Mass Spectroscopy (TPD-MS), a very useful tool to study the energetics of molecular layers and adsorbates on solid surfaces. LÄS MER

  3. 12. Capturing transient peptide assemblies associated with Alzheimer's disease : Native mass spectrometry studies of amyloid-β oligomerization

    Författare :Nicklas Österlund; Astrid Gräslund; Leopold L. Ilag; Mikael Oliveberg; Sheena E. Radford; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Protein aggregation; amyloid-β; neurodegeneration; Alzheimer’s disease; chaperones; DnaJ; biomembranes; native mass spectrometry; Biophysics; biofysik;

    Sammanfattning : Correct folding of proteins is essential for maintaining a functional living cell. Misfolding and aggregation of proteins, where non-native intermolecular interactions form large and highly ordered amyloid aggregates with low free energy, is hence associated with multiple diseases. LÄS MER

  4. 13. A Dance with Protein Assemblies : Analysis, Structure Prediction, and Design

    Författare :Mads Jeppesen; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; protein design; protein structure prediction; virus assembly;

    Sammanfattning : Protein assemblies are some of the most complex molecular machines in nature. They facilitate many cellular functions, from DNA replication to molecular motion, energy production, and even the production of other proteins. LÄS MER

  5. 14. A Tomographic Measurement Technique for Irradiated Nuclear Fuel Assemblies

    Författare :Staffan Jacobsson Svärd; Anders Bäcklin; Ane Håkansson; Klaas van der Meer; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; tomography; nuclear fuel; SPECT; core physics; validation; pin power; safeguards; partial-defect verification; Kärnfysik; Nuclear physics; Kärnfysik;

    Sammanfattning : The fuel assemblies used at the Swedish nuclear power plants contain typically between 100 and 300 fuel rods. An experimental technique has been demanded for determining the relative activities of specific isotopes in individual fuel rods without dismantling the assemblies. LÄS MER

  7. 15. Minimizing the Effect of Geometric Variation in Compliant Assemblies

    Författare :Stefan Dahlström; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; FEA; Compliant assembly evaluation; Tolerancing; sheet metal assembly;

    Sammanfattning : Sheet metal assemblies are often used as support structures in automobiles, airplanes and appliances. These structures not only provide a frame for other modules to be assembled, but also give the product its aesthetic form. All assembly processes are affected by part and process variation. LÄS MER