Sökning: "PSD"

Visar resultat 1 - 5 av 49 avhandlingar innehållade ordet PSD.

  1. 1. Neural Networks Applications and Electronics Development for Nuclear Fusion Neutron Diagnostics

    Författare :Emanuele Ronchi; Sean Conroy; Basilio Esposito; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Neural networks; tomography; unfolding; real time; pulse shape discrimination; PSD; neutron spectroscopy; MPRu; TOFOR; KN3; neutron camera; LED; summing amplifiers; electronics; JET; Plasma physics; Plasmafysik; Computational physics; Beräkningsfysik; Applied Nuclear Physics; Tillämpad kärnfysik; Elektronik; Electronics;

    Sammanfattning : This thesis describes the development of electronic modules for fusion neutron spectroscopy as well as several implementations of artificial neural networks (NN) for neutron diagnostics for the Joint European Torus (JET) experimental reactor in England.The electronics projects include the development of two fast light pulser modules based on Light Emitting Diodes (LEDs) for the calibration and stability monitoring of two neutron spectrometers (MPRu and TOFOR) at JET. LÄS MER

  2. 2. Exploring the Role of the PDZ Domain in a Supramodule

    Författare :Louise Laursen; Per Jemth; Per Hammarström; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; PSD-95; PSG; PDZ3; supramodule; liquid liquid phase separation; allostery; folding; binding; evolution; post synaptic density; SynGap; CRIPT; AGRB1; Medical Biochemistry; Medicinsk biokemi; Medical Biochemistry; Medicinsk biokemi;

    Sammanfattning : The postsynaptic density (PSD) is a large, dense and membraneless compartment of proteins associated below the postsynaptic membrane bilayer, and which constantly undergoes morphological alteration in response to synaptic activity. Formation of PSD is associated with liquid-liquid phase separation of scaffold proteins in complex with other PSD proteins. LÄS MER

  3. 3. Quantitative Electron Microscopy Studies of Metal Nanoparticle Catalysts: Nanostructure, Support Interaction and Ageing Effects

    Författare :Torben Nilsson Pingel; Chalmers University of Technology; []
    Nyckelord :CO oxidation; strain; ageing; specimen preparation; scanning electron microscopy SEM ; FIB SEM; supported nanoparticle catalyst; transmission electron microscopy TEM ; particle size distribution PSD ; platinum;

    Sammanfattning : Heterogeneous catalysis plays a major role in modern society, for example in chemical production, sustainable energy production and emission control technologies. Metal nanoparticles (NPs) supported on oxide materials are frequent catalytic systems in this field. LÄS MER

  4. 4. Quantitative studies of changes in microstructure and activity during ageing of supported catalysts

    Författare :Torben Pingel; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; supported nanoparticle catalyst; scanning electron microscopy SEM ; quantitative; bimetallic catalyst; ageing properties; CO oxidation; FIB SEM; specimen preparation; particle size distribution PSD ; transmission electron microscopy TEM ;

    Sammanfattning : Catalytic converters have substantially contributed to the improvement of air quality in populated areas in the last decades by abatement of the emission of hazardous componentssuch as CO, unburned hydrocarbons and NOx. However, due to the exposure to high temperature and different components in the exhaust gas, the performance of the catalysts degrades with time. LÄS MER

  5. 5. Community-based customer involvement for improving packaged software development

    Författare :Helena Holmström; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Packaged software development; software improvement; virtual communities; customer involvement; community knowledge; community-based customer involvement;

    Sammanfattning : Noting the widespread use of virtual communities for interacting with customers, this thesis explores the role of virtual communities for involving distributed customers in packaged software development (psd) and the opportunities and challenges that are associated with this. While the idea of involving customers in software development is not new, it is yet to gain momentum in psd. LÄS MER