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Showing result 1 - 5 of 6 swedish dissertations matching the above criteria.

2. 1. Chemometric and signal processing methods for real time monitoring and modeling : applications in the pulp and paper industry

   Author : Anders Björk; Lars-Göran Danielsson; Guy Dumont; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Acoustic; Vibration; Multivariate; Chemometrics; PLS; OSC; PCA; FFT; Wavelets; WT-MRS; CWT-FLE; Pulp Quality; CSF; Brightness; Tensile Strength properties; Optical Properties; Measurement Technology; On-line; Non-invasive; Process Control; Process Analysis; Process Analytical Technology; PAT.; Akustik; Vibrationer; Multivariat; Kemometri; PLS; OSC; PCA; FFT; Wavelets; WT-MRS; CWT-FLE; Massakvalitet; CSF; Ljushet; Dragstyrkeegenskaper; Optiska egenskaper; Mätteknik; On-line; Icke berörande mätning; Processtyrning; Processanalys; Processanalytisk Teknologi; PAT.; Analytical chemistry; Analytisk kemi;

   Abstract : In the production of paper, the quality of the pulp is an important factor both for the productivity and for the final quality. Reliable real-time measurements of pulp quality are therefore needed. READ MORE

4. 2. On calcium-related problems in kraft pulping of Eucalyptus dunnii

   Author : Vijaya Lakshmi Vegunta; Olena Sevastyanova; Helena Håkansson; KTH; []
   Keywords : Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Kraft pulping is the most widely used pulping process for producing chemical pulp today. It has been in use for more than 130 years. READ MORE

5. 3. Aspects of extended impregnation kraft cooking for high-yield pulping of hardwood

   Author : Helena Wedin; Mikael E. Lindström; Martin Ragnar; Jorge L. Colodette; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Yield; pulp; kraft cook; carbohydrate; xylan; oxygen delignification; Hexenuronic acid; kappa number;

   Abstract : 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. READ MORE

6. 4. Optical Studies of Bio-inspired Materials for Camouflage

   Author : Christina Åkerlind; Kenneth Järrendahl; Hans Arwin; Hans Kariis; Karin Stein; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : In the ongoing sensor-camouflage duel, new functionalities and sensing abilities are continuously incorporated in detector devices, requiring new capabilities on the camouflage side. The aim of this work is to contribute to improved camouflage including low polarization detectability in wavelength regions with both visible and invisible light. READ MORE

7. 5. Wood chips for kraft and sulfite pulping : evaluation of novel forest-industrial drum-chipping technology

   Author : Jessica Gard Timmerfors; Leif J. Jönsson; David Blomberg; Sören Östlund; Umeå universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood chip; drum chipper; impregnation; pulping; sulfite process; kraft process; Scots pine; Norway spruce; heartwood; frozen wood; moisture content;

   Abstract : Wood chipping and the supply of high-quality wood chips are of critical importance for most forest-industrial processes. The quality of wood chips affects product yield, product quality, and processability. READ MORE