Search for dissertations about: "Elevated Temperature"

Showing result 1 - 5 of 413 swedish dissertations containing the words Elevated Temperature.

2. 1. Nanofiltration at elevated temperatures: Influence of the combined effects of temperature, salts, pH and cleaning

   Author : Mattias Nilsson; Livsmedelsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elevated temperatures; Electroviscous friction; Energy; pH; Economics; Nanofiltration; Pre-treatment; Salt; Swelling; Membrane performance; Cleaning; Temperature;

   Abstract : The influence of temperature, salts, pH, and various pre-treatments and cleaning on the nanofiltration (NF) performance of thin-film polyamide (PA) composite membranes has been investigated. The change in membrane performance was correlated to membrane swelling or/and electroviscous friction. READ MORE

4. 2. On Thermal Conductivity and Strength in Compacted Graphite Irons : Influence of Temperature and Microstructure

   Author : Martin Selin; Ingvar L. Svensson; Attila Diószegi; Steve Dawson; Jönköping University; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Compacted Graphite Iron; Thermal Conductivity; Mechanical Properties; Hardness; Microstructure; Plastic Deformation; Hollomon Equation; Elevated Temperature; Materials science; Teknisk materialvetenskap;

   Abstract : Thermal conductivity, hardness and strength are all highly important material properties, affecting the performance and life expectancy of components operating at elevated temperatures. The main purpose of this work has been to increase the knowledge and understanding concerning how mechanical and physical properties are affected by temperature and microstructure in compacted graphite irons. READ MORE

5. 3. Al-Si Cast Alloys - Microstructure and Mechanical Properties at Ambient and Elevated Temperature

   Author : Mohammadreza Zamani; Anders Jarfors; Sten Johansson; Jönköping University; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Al-Si based casting alloys; elevated temperature; microstructural scale effect; Sr modification;

   Abstract : Aluminium alloys with Si as the major alloying element form a class of material providing the most significant part of all casting manufactured materials. These alloys have a wide range of applications in the automotive and aerospace industries due to an excellent combination of castability and mechanical properties, as well as good corrosion resistance and wear resistivity. READ MORE

6. 4. High temperature galling : influencing parameters and mechanisms

   Author : Leonardo Pelcastre; Jens Bergström; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements; Centrumbildning - Centrum för högpresterande stål CHS ; Centre - Centre for High Performance Steel CHS ;

   Abstract : Damage of forming tools at elevated temperatures is a major problem in metal forming processes such as hot stamping. Of special importance is the occurrence of adhesion and gross material transfer from the work-piece to the tool surface, a phenomenon known as galling. READ MORE

7. 5. Short-term effects of ambient temperature on daily deaths and hospital admissions

   Author : Joacim Rocklöv; Bertil Forsberg; Jan Semenza; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; temperature; humidity; weather; climate; climate change; hot; heat; cold; cold spell; cold wave; heat wave; health; hospitalization; hospital admission; death; mortality; morbidity; epidemiology; environmental epidemiology; time series; Public health medicine research areas; Folkhälsomedicinska forskningsområden; Occupational and Environmental Medicine; arbets- och miljömedicin;

   Abstract : Background: Incidence of death and hospitalizations have been observed to depend on short-term changes in weather and to increase with extreme temperatures. This thesis aims to strengthen the scientific knowledge on the relationship between temperature and daily deaths, but also the relationship between temperature and daily hospital admissions. READ MORE