Search for dissertations about: "discharge"

Showing result 21 - 25 of 964 swedish dissertations containing the word discharge.

2. 21. Perceived Participation in Discharge Planning and Health Related Quality of Life after Stroke

   Author : Ann-Helene Almborg; Stig Berg; Elisabeth Hamrin; Jönköping University; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Discharge planning; Goal-setting; Health related quality of life; ICF; Information; Needs assessment; Patient participation; Relatives participation; Social activities; Stroke;

   Abstract : The overall aim of this thesis was to investigate the patients’ and their relatives’ perceived participation in discharge planning after stroke and the patients’ health-related quality of life, depressive symptoms, performance of personal daily activities and social activities in connection with discharge. Another aim was to evaluate the psychometric assumptions of the SF-36 for Swedish stroke patients. READ MORE

4. 22. Partial Discharge Signatures of Defects in Insulation Systems Consisting of Oil and Oil-impregnated Paper

   Author : Mohamad Ghaffarian Niasar; Hans Edin; Peter Werelius; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; partial discharge; transformer; oil; ageing; temperature; PD classification;

   Abstract : Partial discharge measurement is a common method for monitoring and diagnostics of power transformers, and can detect insulation malfunctions before they lead to failure. Different parameters extracted from the measured PD activity can be correlated to the PD source, and as a result it is possible to identify the PD source by analyzing the PD activity. READ MORE

5. 23. Dielectric Response and Partial Discharge Diagnostics of Insulation Systems by Utilizing High Voltage Impulses

   Author : Roya Nikjoo; Hans Edin; Andrea Cavallini; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dielectric Response; Transients; Transformer bushing; Oil-impregnated paper; Moisture content; Partial discharge; Surface PD; Cavity PD; Superimposed impulse; Nanoparticles; Electrical Engineering; Elektro- och systemteknik;

   Abstract : In this thesis, power system transients are considered as an opportunity for development of on-line diagnostics of power components and specifically the insulation systems of power transformers and bushings.A new technique for on-line dielectric response measurement of power transformer bushings is proposed which utilizes natural transients in the power system, such as lightning and switching surges, as stimuli. READ MORE

6. 24. Discharge procedures for mentally ill people : the perspective of former psychiatric patients on their social network, quality of life and future life expectations

   Author : Mona Dufåker; Umeå universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Mental illness; social network; professional; quality of life; future life expectations; employment; labour market;

   Abstract : The aim of this study was to find out: (a) the role played by various agencies in the discharge procedure and (b) former psychiatric patients" own perspective on their social network, quality of life and future life expectations.The theoretical framework is based on Mead's symbolic interactionism, Asplund's interpretation of Tönnies' concepts Gemeinschaft and Gesellschaft and Buber's dialogical philosophy. READ MORE

7. 25. Charge Accumulation in Hybrid High Voltage Insulation

   Author : Mats Sjöberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dielectric barrier; charge accumulation; high voltage; dielectric barrier discharge; dielectric coating; hybrid insulation; electric field distribution; discharge modelling; breakdown strength; charge conditioning;

   Abstract : This thesis deals with the novel idea of controlling the electric stress or field distribution in a hybrid air - solid-dielectric high voltage insulation by promoting accumulation of surface charges on the internal interfacial layers in the combined (hybrid) dielectric structure. Primarily, applications are expected to be found in high voltage dc systems and as a method to improve the resistance against insulation failure by overvoltages, e. READ MORE