Search for dissertations about: "main"

Showing result 26 - 30 of 13050 swedish dissertations containing the word main.

  2. 26. Construction transport efficiency from the perspective of Main Contractor and Transporter

    Author : Farah Naz; Anna Fredriksson; Linea Kjellsdotter Ivert; Johan Woxenius; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Construction transport efficiency; Performance measures; Construction logistics management; Case study;

    Abstract : Transport efficiency within construction is low. One reason behind the lack of efficiency within the construction transport is the lack of proper logistics management that in turn results in problems of delivery reliability, material flows as well as material availability. READ MORE

  4. 27. Determination of Mefloquine Enantiomers and their Main Metabolite in Biological Fluids

    Author : Jalena Jastrebova; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi;

    Abstract : .... READ MORE

  5. 28. On SiC JFET converters: components, gate-drives and main-circuit conditions

    Author : Björn Ållebrand; Hans-Peter Nee; Lutz Josef; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power JFET; SiC JFET; Silicon Carbide; PSpice; Simulations; Gate drive; Blanking times; Normally-on; Modeling; Commutation transients; Electric power engineering; Elkraftteknik;

    Abstract : This thesis deals with Silicon Carbide Junction Field Effect Transistors (SiC JFETs) - how to use them to their full potential in power electronic circuits, how to model them in a power electronic simulation program, and how a gate drive can be built. To fully utilize the low on-state losses of SiC JFETs it is suggested that SiC JFETs should not be equipped with anti-parallel diodes. READ MORE

  6. 29. Main Circuits, Submodules, and Auxiliary Power Concepts for Converters in HVDC Grids

    Author : Stefanie Heinig; Hans-Peter Nee; Staffan Norrga; Kalle Ilves; Rainer Marquardt; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ac–dc power conversion; energy storage; fault tolerance; HVDC converters; HVDC grid; isolated power supply; modular multilevel converter MMC ; power system faults; silicon carbide; submodules; voltage source converter VSC ; Electrical Engineering; Elektro- och systemteknik;

    Abstract : In order to enable the massive introduction of renewable energies the need for high-voltage direct current (HVDC) grids is anticipated. Large, globally interconnected HVDC networks will likely be the most cost-efficient means to balance electricity demand and available generation. READ MORE

  7. 30. Xerostomia : Views among health care professionals and the main concern among afflicted adults

    Author : Solgun Folke; Malmö högskola; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The aims of the two studies were to survey and describe views of xerostomia among health care professionals and to explore, among afflicted adults; the main concerns associated with xerostomia and attempted remedies. Two empirical studies with qualitative design were conducted. READ MORE