Sökning: "pressure distribution"

Visar resultat 11 - 15 av 577 avhandlingar innehållade orden pressure distribution.

  1. 11. Security of Electricity Supply in Power Distribution System : Optimization Algorithms for Reliability Centered Distribution System Planning

    Författare :Sanja Duvnjak Zarkovic; Patrik Hilber; Ebrahim Shayesteh; George Anders; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The importance of electricity in everyday life and demands to improve the reliability of distribution systems force utilities to operate and plan their networks in a more secure and economical manner. With higher demands on reliability from both customers and regulators, a big pressure has been put on the security of electricity supply which is considered as a fundamental requirement for modern societies. LÄS MER

  3. 12. On the inception of leakage : Effect of hydrostatic pressure on the sealing interface

    Författare :De Huang; Andreas Almqvist; Roland Larsson; Xiang Yan; Alessandro Ruggiero; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; static seal; contact mechanics; hydrostatic; critical pressure; leakage; Maskinelement; Machine Elements;

    Sammanfattning : As the move towards sustainability continues,  attention needs to be paid to the development of new machinery with high performance and low environmental impact. It places increasing demands on low/zero-emission sealing with a long lifetime. LÄS MER

  4. 13. Fuel dispersion and bubble flow distribution in fluidized beds

    Författare :Johanna Olsson; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluidised bed; fuel mixing; bubble distribution; digital image analysis; particle tracking; Energi och material; Resource Recovery; Resursåtervinning;

    Sammanfattning : Fluidized bed technology is used for thermal conversion of solid fuels (combustion and gasification) and is especially suitable for conversion of low-rank fuels such as biomass and waste. The performance of fluidized bed units depends on the fuel mixing and fuel-gas contact. LÄS MER

  5. 14. The Hand in Manual Work - Physiological and Psychophysical studies

    Författare :Lena Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hand; pressure; muscle activity; laser doppler flowmeter; perception; manual work; hand tool; drilling machine; cutaneous blood flow; wrist orthosis;

    Sammanfattning : This thesis focuses on the hand in manual work. In particular, we have studied what happens to skin and muscles when gripping a hand tool. Different aspects of gripping that will be discussed are: pressure on the hand, effects on the skin blood flow, muscle activity and the use of wrist orthoses. LÄS MER

  7. 15. Blood pressure, blood pressure development and potential risk factors for hypertension with special reference to metabolic factors and kidney function

    Författare :Karl Kristjansson; Göteborgs universitet; []
    Nyckelord :hypertension; blood pressure; women; epidemiology; weight change; metabolic factors; insulin; glucose tolerance; albuminuria; proteinuria; risk factors.;

    Sammanfattning : Objectives: The overall aim of this thesis was to search for predictors of blood pressure development with special reference to anthropometric, metabolic and renal function variables.Study populations and methods: Two large long-term prospective population studies, The Population Study of Women in Gothenburg, Sweden carried out since 1968-69, with 1462 women between 38 and 60 years old at baseline and 24 year follow-up, and The Reykjavik Study, Iceland, which started in 1967 with an initial participation of 8285 men and 9183 women in various age groups. LÄS MER