Sökning: "impregnation"
Visar resultat 16 - 20 av 108 avhandlingar innehållade ordet impregnation.
16. Combination of heating and preservative impregnation of wood for outdoor exposure
Sammanfattning : The research is presented as a composite thesis containing a theoretical explanatory review based on four scientific articles. The thesis covers the investigation of wood modification methods, which in the future could possibly be developed further to enhance the performance of wood products in an efficient and economical way. LÄS MER
17. Aspects of extended impregnation kraft cooking for high-yield pulping of hardwood
Sammanfattning : The long-term trend regarding wood is an increase in price. Because wood contributes to a large part of production costs, the efficient utilisation of wood is greatly desired to reduce production costs for kraft pulp producers. During the 1990s, the development of improved modified kraft cooking began, which led to higher yields. LÄS MER
18. Pretreatment and Enzymatic Treatment of Spruce : A functional designed wood components separation for a future biorefinery
Sammanfattning : The three main components of wood, namely, cellulose, hemicellulose, and lignin, can be used in various areas. However, since lignin covalently crosslinks with wood polysaccharides creating networks that is an obstacle for extraction, direct extraction of different wood components in high yield is not an easy matter. LÄS MER
19. Physical and morphological aspects of linseed oil impregnated pine (Pinus Sylvestris)
Sammanfattning : This work has investigated the possibilities of increasing wood durability using environmentally friendly chemicals. The chemical used in this study was linseed oil. The study also investigated flow paths during impregnation in pine and spruce. LÄS MER
20. Modeling and Optimization of Rare Earth Element Chromatography
Sammanfattning : The Rare Earth Elements are a group of metals, that are of growing technical and economical importance. Current separation techniques can be detrimental to the environment, and a clean technology for separation has been devised, based on analytical chromatography of the REEs. LÄS MER