Search for dissertations about: "reverse flow"

Showing result 21 - 25 of 67 swedish dissertations containing the words reverse flow.

  2. 21. From Light to Dark : Electrical Phenomena in Cu(In,Ga)Se2 Solar Cells

    Author : Piotr Szaniawski; Marika Edoff; Uwe Zimmermann; Jörgen Olsson; Thomas Walter; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar cells; Photovoltaics; Cu InGa Se2; CIGS; Electrical characterization; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

    Abstract : In Cu(In,Ga)Se2 (CIGS) solar cells the CIGS layer serves as the light absorber, growing naturally p-type. Together with an n-type buffer layer they form a p-n heterojunction. Typically, CdS is used as a buffer, although other, less toxic materials are investigated as alternatives. READ MORE

  4. 22. Stability and transition on wind turbine blades

    Author : Thales Coelho Leite Fava; Ardeshir Hanifi; Dan Henningson; Stefania Cherubini; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Boundary layer stability; free-stream turbulence; laminar-turbulent transition; low-frequency oscillations; rotation effects; wind turbine blades.; Gränsskiktsstabilitet; friströmsturbulens; laminär-turbulent omslag; lågfrekventa svängningar; rotationseffekter; vindkraftverksblad.; Teknisk mekanik; Engineering Mechanics;

    Abstract : Transition on wind turbine blades is a highly complex phenomenon due to the myriad effects influencing the process. This thesis studies some of them, namely free-stream turbulence (FST), rotation, and three-dimensionality. The investigations employ large eddy simulations (LES) with and without (implicit or wall-resolved LES) a subgrid-scale model. READ MORE

  5. 23. Quantitative Laser Doppler Flowmetry

    Author : Ingemar Fredriksson; Tomas Strömberg; Marcus Larsson; Weindelt Stenbergen; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Medical engineering; Medicinsk teknik;

    Abstract : Laser Doppler flowmetry (LDF) is virtually the only non-invasive technique, except for other laser speckle based techniques, that enables estimation of the microcirculatory blood flow. The technique was introduced into the field of biomedical engineering in the 1970s, and a rapid evolvement followed during the 1980s with fiber based systems and improved signal analysis. READ MORE

  6. 24. Aspects on Chronic Venous Disease of the Lower Limb

    Author : Gudmundur Danielsson; Malmö Institutionen för kliniska vetenskaper; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Kirurgi; ortopedi; traumatologi; Cardiovascular system; Kardiovaskulära systemet; traumatology; orthopaedics; Surgery; duplex ultrasound; foot volumetry; Chronic venous disease; CEAP classification;

    Abstract : Controversies exist regarding both what is required for a proper diagnosis of chronic venous disease (CVD), and what treatment to offer patients. An objective evaluation is mandatory to individualize treatment. READ MORE

  7. 25. Development of array systems for molecular diagnostic assays

    Author : Philippa Reuterswärd; Catherine M. Klapperich; KTH; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bioteknologi; Biotechnology;

    Abstract : For molecular diagnostics, assays detecting biomarkers can be used to provide information to medical questions. Array formats such as microarrays and suspension bead arrays allow for multiplex assays, analyzing hundreds or thousands of analytes simultaneously in one single sample. READ MORE