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Oxymercuration-demercuration kappa number:
Nordic Pulp & Paper Research Journal, 2002In the kappa number determination, it has been found that non-lignin structures contribute to the consumption of permanganate, and thus make it difficult to estimate the lignin content in the pulp.
Jiebing Li, Göran Gellerstedt
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Kinetics and mechanism of kappa number determination
Nordic Pulp & Paper Research Journal, 1998The kinetics and mechanism involved in the kappa number determination have been studied using a spectrophotometric method to monitor the oxidation of pine kraft pulp as well as of model compounds f ...
Jiebing Li, Göran Gellerstedt
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PREDICTION AND CONTROL OF BLOW-LINE KAPPA NUMBER
IFAC Proceedings Volumes, 2005Abstract Two industrial continuous cooking processes producing both softwood and hardwood pulp were studied. Real time kappa number profiles of conventional and Downflow Lo-Solids cooking were modelled. Gustafson's kappa number model with optimised parameters was used. Blow-line kappa numbers were successfully predicted before cooking zone. New kappa
Rami Rantanen +4 more
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Dependence of Weighted Kappa Coefficients on the Number of Categories
Epidemiology, 1996Weighted kappa coefficients are commonly used to quantify inter- or intra-rater reliability or test-retest reliability of ordinal ratings in clinical and epidemiologic applications. In this paper, we assess the dependence of weighted kappa coefficients on the number of categories and the type of weighting scheme, which vary between applications.
H, Brenner, U, Kliebsch
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On the structural significance of the kappa number measurement
Nordic Pulp & Paper Research Journal, 1998The structural significance of a kappa number has been studied by quantifying the permanganate consumption of various isolated pine, birch and poplar lignins, of lignin model compounds and of carbo ...
Jiebing Li, Göran Gellerstedt
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Afrika Matematika, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nanjundan Magesh +3 more
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nanjundan Magesh +3 more
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Enhancing Controllability of Kappa Number Using Gray-Box Modeling
IFAC Proceedings Volumes, 2004Abstract In industrial digester control systems Kappa number models are often used. There are publications using both physical and experimental methods. In this study Kappa number is predicted in the top of the digester using both modelling techniques.
Timo Ahvenlampi +3 more
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