Search for dissertations about: "TEK="

Showing result 1 - 5 of 185 swedish dissertations containing the word TEK=.

2. 1. The Use of Lignin Derivatives to Improve Selected Paper Properties

   Author : Stefan Antonsson; Mikael E. Lindström; Gunnar Henriksson; Mats Johansson; Docent Roland Agnemo Tek. Dr. Harald Brelid; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; kraft lignin; black liquor; cross-flow filtration; lignin derivative; kraftliner; oxidative coupling; laccase; manganese; linseed oil; mechano-sorptive creep; kraftlignin; svartlut; tvärsflödesfiltrering; ligninderivat; kraftliner; oxidativ koppling; lackas; mangan; linolja; mekanosorptivt kryp; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Abstract : Ved består huvudsakligen av tre typer av polymerer, cellulosa, hemicellulosa och lignin. Lignin bildas i naturen genom enzymatiskt initierad oxidativ koppling av tre olika typer av fenylpropan-enheter. Dessa bygger genom olika kol-kol- och kol-syre-bindningar upp en amorf tredimensionell polymer. READ MORE

4. 2. What's Next? : Organising Complex Product Development with Lean

   Author : Caroline Ingvarsson; Mats Engwall; Lars Uppvall; Anette Hallin; Pascal Le Masson; KTH; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Lean Knowing-in-practice Work organisation; Product Development; Industriell ekonomi och organisation; Industrial Economics and Management;

   Abstract : An everyday question asked during complex product development work is, ‘What to do next’? Not just because the development in itself is advanced and integrated, but also because it is planned and performed in large organisations, in difficult projects, and across organisational lines. There have been different approaches to try and reduce the difficulty of having to organise complex product development, primarily through using different kinds of management models. READ MORE

5. 3. Pressure sore etiology - highlighted with optical measurements of the blood flow

   Author : Annika Jonsson; Ylva Bäcklund; Maria Lindén; Margareta Lindgren; Bertil Hök; Mälardalens högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Elektronik; Elektronik;

   Abstract : In line with the quality awareness of good prevention of pressure sores and in treatment of those sores already developed, evaluation of antidecubitus mattresses plays an important role. However, there are shortages in the evaluations performed today, since often interface pressure is the only parameter regarded. READ MORE

6. 4. Deformability of unidirectional prepreg materials

   Author : Ylva Larberg; Malin Åkermo; Patrik Fernberg; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; prepreg; deformability; carbon composite; Vehicle engineering; Farkostteknik;

   Abstract :  To reduce cost of structural composites the development of more efficient manufacturing methods is of great interest. Sheet forming of thermoset prepreg, also known as hot drape forming, has been a promising manufacturing method for decades. An automatic tape layer (ATL) can be used to perform the lay-up in an efficient way. READ MORE

7. 5. Transitional boundary layers caused by free-stream turbulence

   Author : Shahab Shahinfar; Jens Fransson; Johan Westin; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering mechanics; Teknisk mekanik;

   Abstract : The present measurement campaign on the free-stream turbulence (FST) induced boundary layer transition scenario has provided a unique set of experimental data, with potential to enhance the understanding of the eect of the free-stream turbulence characteristic length scales on the transition location and not only the turbulence intensity, which has been the focus in most previous studies. Recent investigations where the turbulence intensity has been kept essentially constant, while the integral length scale has been changed, show that the transition location is advanced for increasing length scale. READ MORE