Results 171 to 180 of about 719,923 (216)
Some of the next articles are maybe not open access.
Oxygen Delignification of Bamboo Kraft Pulp with High Kappa Number
Advanced Materials Research, 2011Bamboo kraft pulp with Kappa number of 25.6 was sampled, and oxygen delignification was applied to bleach these bamboo pulp samples. By investigating yield, Kappa number, viscosity, brightness of pulp, and delignification selectivity, it has been proven that caustic soda dosage and reaction temperature were major factors for oxygen delignification. The
Hui Gao, Huai Yu Zhan
openaire +1 more source
Monitoring the kappa number of bleached pulps based on FT-Raman spectroscopy
Cellulose, 2021A new strategy was proposed to determine the Kappa number of bleached Eucalyptus globulus kraft pulps based on FT-Raman spectroscopy. Before modeling, smoothing (Savitzky-Golay), baseline correction (air-PLS), and Gaussian fitting were executed for obtaining data, including peak intensities and areas, from the Raman spectra.
Wenli Gao +4 more
openaire +1 more source
Kappa Number Prediction of Pulp Digester Using LSTM Neural Network
2019 16th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2019A digester, one of the major units of Kraft process, has a function for conversion of wood into wood pulp. It is controlled by monitoring Kappa number with nonlinear reaction and has a long resident time. This paper aims to present the prediction of kappa number in pulp digester in advance for 1-3 hours by using Long Short-Term Memory (LSTM) neural ...
Arinchai Phatwong, Diew Koolpiruck
openaire +1 more source
Target Kappa Number for AS/AQ Pulping of Wheat Straw
Advanced Materials Research, 2011Alkaline sulfite/anthraquinone (AS/AQ) pulping of wheat straw under different conditions was conducted in this study. A transition point of kappa number at approximately 6.5 was observed based on all experimental results. This transition point can be regarded as the phase transfer point in AS/AQ pulping from bulk to residual delignification.
Jing Liu, Katsuya Nagata
openaire +1 more source
Cardinal invariants for $\kappa$-box products: weight, density character and Suslin number
Dissertationes Mathematicae, 2016Let \((X_{I})_{\kappa}\) denote the topological space \(X_{I}=\Pi_{i\in I}X_{i}\) with the \(\kappa\)-box topology, where \(\kappa\geq\omega\). In this paper, the authors discuss the weight \(w\), the density \(d\), and the Suslin number \(S\) of \(\kappa\)-box products. The main results of this paper are as follows: Theorem 3.1.10(b).
Comfort, W. W., Gotchev, Ivan S.
openaire +1 more source
Kappa Number Prediction by Hybrid Model for Batch Pulp Cooking Process
IFAC Proceedings Volumes, 2004Abstract In batch pulp cooking process the wood chips are converted into pulp by lignin dissolution in cooking acid. The percentage of non-dissolved lignin is often expressed by so called Kappa number. To obtain desired quality of the pulp, Kappa number of the pulp should be decreased to the desired value at the end of batch cycle.
Yan Li +3 more
openaire +1 more source
Online Monitoring of Kappa Number during Batch Pulping by Visible Spectroscopy
Industrial & Engineering Chemistry Research, 2009Aiming at the difficulties and problems of online measurement of pulp Kappa number during batch pulping, a novel measuring idea was proposed to predict the lignin content in pulp through the measur...
Wenhao Shen, Xiaoquan Chen
openaire +1 more source
Modelling Kappa Number and Pulp Viscosity in Industrial Oxygen Delignification Systems
Chemical Engineering Research and Design, 2007Predictions of a mathematical model for oxygen delignification are compared with measurements made at three mills having system designs and operating conditions covering those used industrially. Pulp samples were taken for analysis throughout each system, and most importantly, immediately following mixing.
J. Susilo, C.P.J. Bennington
openaire +1 more source
Journal of molecular and applied genetics, 1982
To count V kappa genes homologous to particular V kappa nucleotide sequences, thereby permitting estimates for the total V kappa repertoire, we hybridized 10 cloned V kappa cDNA sequences to restriction fragments of mouse embryo DNA (Southern blots). Particular probes labeled up to 17 fragments, of which up to 8 were strongly labeled.
S, Cory, B M, Tyler, J M, Adams
openaire +1 more source
To count V kappa genes homologous to particular V kappa nucleotide sequences, thereby permitting estimates for the total V kappa repertoire, we hybridized 10 cloned V kappa cDNA sequences to restriction fragments of mouse embryo DNA (Southern blots). Particular probes labeled up to 17 fragments, of which up to 8 were strongly labeled.
S, Cory, B M, Tyler, J M, Adams
openaire +1 more source
Kappa Number Profile Control for Continuous Digesters
1998Continuous digester control for improved uniformity of pulp and fiber properties is gaining more attention as strict final product quality needs and tighter environmental regulations demand much higher performance standards from strategic manufacturing processes.
openaire +1 more source