Sökning: "HALS"

Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet HALS.

  1. 1. Numerical Modelling and Mechanical Studies on a Point Absorber Type Wave Energy Converter

    Författare :Yue Hong; Rafael Waters; Mikael Eriksson; Cecilia Boström; Jørgen Hals Todalshaug; Uppsala universitet; []
    Nyckelord :linear generator; point absorber; numerical modelling; power production; optimal damping; Teknisk fysik; Engineering Science;

    Sammanfattning : Oceans cover two thirds of the Earth’s surface and the energy potential of ocean waves as a renewable energy source is huge. It would therefore be a tremendous achievement if the vast mechanical energy in waves was converted into a form of energy that could be used successfully by society. LÄS MER

  3. 2. Modelling and Advanced Control of Fully Coupled Wave Energy Converters Subject to Constraints: the Wave-to-wire Approach

    Författare :Liguo Wang; Jan Isberg; Jørgen Hals Todalshaug; Uppsala universitet; []
    Nyckelord :Ocean wave energy; marine energy converter; wave energy converter; wave energy farm; potential flow theory; linear permanent magnet generator; control strategy; wave-to-wire approach; physical constraints; power generation control.; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Ocean wave energy is a promising renewable source to contribute to supplying the world’s energy demand. The Division of Electricity at Uppsala University is developing a technology to capture energy from ocean waves with a wave energy converter (WEC) consisting of a linear permanent magnet generator and a point absorber. LÄS MER

  4. 3. Consumption and loss of commercial stabilisers in polyethylene exposed to different natural environments

    Författare :Nadejzda Haider; KTH; []
    Nyckelord :LDPE; MDPE; ultrasonic extraction; polymer additives; stabilisers; antioxidants; HALS; Irganox 1010; Irgafos 168; migration; consumption; GC-MS; additive degradation products;

    Sammanfattning : A procedure for the extraction and analysis of commercialstabilisers in low density and medium density polyethylene(LDPE and MDPE) films was developed and used to study theconsumption of stabilisers in polymers exposed to differentnatural environments. An ultrasonic technique was applied toextract HALS-3 (Chimassorb 944) from LDPE film and antioxidants(Irganox 1010 and Irgafos 168) from MDPE film. LÄS MER

  5. 4. Head and Neck Cancer: Studies on microvessel density, radiation response and FDG PET

    Författare :Eva Brun; Bröstcancer-genetik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; positron emission tomography PET ; 2-18 fluoro deoxy glucose FDG ; radiotherapy; microvessel density; Head and neck cancer; therapy response; Cytology; oncology; cancerology; Cytologi; onkologi; cancer;

    Sammanfattning : Treatment options of head and neck squamous cell carcinoma (HNSCC) usually include combinations of radiotherapy and surgery, and in some cases addition of chemotherapy. In locally advanced cases cure rates are low. Current prognostic factors cannot foresee the outcome for the individual patient. LÄS MER

  7. 5. Bacterial Outer Membrane Vesicles. Mediators of virulence and antibiotic resistance

    Författare :Viveka Schaar; Malmö Klinisk mikrobiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Antibiotic resistance; Moraxella catarrhalis; epithelial cells; beta-lactamase; non-typeable Haemophilus influenzae; outer membrane vesicles; polymicrobial infections; UspA1;

    Sammanfattning : Outer membrane vesicles (OMV) have the size of nanoparticles and are released from the outer membrane of most Gram-negative bacteria. The OMV reflect the composition of the bacterial outer membrane, including lipids and virulence factors specific for the pathogen, and are involved in pathogenesis and bacterial survival. LÄS MER