Search for dissertations about: "flexibility and stress"

Showing result 1 - 5 of 63 swedish dissertations containing the words flexibility and stress.

  2. 1. Simulations of the Dynamics of Fibre Suspension Flows

    Author : Stefan B Lindström; Tetsu Uesaka; Myat Htun; Fritz Bark; Mittuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fibre; fibre suspension; simulation; paper; papermaking; forming; fibre orientation distribution; fibre flexibility; viscosity; first normal stress difference; fluid flow; simple shear flow; two-way coupling; three-dimensional; Chemical engineering; Kemiteknik; Engineering physics; Teknisk fysik;

    Abstract : A new model for simulating non-Brownian flexible fibres suspended in a Newtonian fluid has been developed. Special attention has been given to include realistic flow conditions found in the industrial papermaking process in the key features of the model; it is the intention of the author to employ the model in simulations of the forming section of the paper machine in future studies. READ MORE

  4. 2. Influence of deformation and environmental degradation of Inconel 792

    Author : Jan-erik Kanesund; Christer Burman; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Industrial gas turbines are often used as a mechanical drive for pumps and compressors or in power generation as an electric power supply. The gas turbine has for many years been a popular engine due to its flexibility with respect to different types of fuel and due to a design, that enables a high power-to-weight ratio. READ MORE

  5. 3. Telework in academia – Opportunities and challenges for well-being at work

    Author : Linda Widar; Birgitta Wiitavaara; Marina Heiden; Calle Rosengrad; Högskolan i Gävle; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; telework; academia; psychophysiological activity; physical behaviors; stress; well-being; leadership; phenomenography; distansarbete; akademianställda; psykofysiologisk reaktivitet; fysiska beteenden; stress; välbefinnande; ledarskap; fenomenografi;

    Abstract : Background:Telework reshapes the conventional work practice by providing the flexibility to perform work at new places and times. Telework can increase individual autonomy to control and organize work, but can also place higher demands on the ability to separate work-nonwork in time and space, physically and mentally. READ MORE

  6. 4. Characterization of White Layers induced by Hard Turning of AISI 52100 Steel

    Author : Seyed Hosseini; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; white layer; hard turning; IR-pyrometer; nano-sized grains; martensite; cutting temperature; bainite; cubic boron nitride; residual stress; retained austenite; cutting forces;

    Abstract : Hard turning is a machining process applied to metallic materials with hardness above 45 HRC. The process offers high production flexibility and sustainable manufacturing since it allows performing both rough and finishing machining of complex geometries in one single setup. READ MORE

  7. 5. Work and sleep - what's stress got to do with it?

    Author : Johanna Garefelt; Loretta G. Platts; Hugo Westerlund; Göran Kecklund; Christian Benedict; Stockholms universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; insomnia; job stress; retirement; social jetlag; accelerometery; Public Health Sciences; folkhälsovetenskap;

    Abstract : Work may affect sleep by reducing the time available for recovery and, via work stress, by reducing sleep quality. Further, people experiencing sleep disturbance may be less resistant to work stress. These processes may lead to the development of a vicious cycle between work and sleep, in which stress has a central role. READ MORE