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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 11 to 20 of 346 (0.017 seconds)Spelling suggestions: "subject:"woodpulp.""
| 11 |
Mechanistic studies of the oxidation of lignin and cellulose models /Lee, Oh-Kyu, January 2003 (has links) (PDF)
Thesis (Ph. D.) in Chemistry--University of Maine, 2003. / Includes vita. Includes bibliographical references (leaves 103-115).
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| 12 |
Oxygen delignification kinetics and selectivity improvement /Violette, Steven M., January 2003 (has links) (PDF)
Thesis (Ph. D.) in Chemical Engineering--University of Maine, 2003. / Includes vita. Includes bibliographical references (leaves 155-160).
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| 13 |
Physico-chemical studies of delignification during pulp washingChoi, Paul Man-keung. January 1975 (has links)
No description available.
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| 14 |
The effect of chemical and xylanese pretreatment on the quality of softwood kraft pulp bleached with CED sequenceSugiharto, Andoyo 12 1900 (has links)
No description available.
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| 15 |
Investigation of the effect of neutral solvent pretreatment of tulip poplar on enzymatic hydrolysisSweeney, Renee Marie 12 1900 (has links)
No description available.
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| 16 |
Improving fiber yield by reducing pulping knotsRodriguez, Reynaldo A. 05 1900 (has links)
No description available.
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| 17 |
The viscosity of viscose solutions made from Georgia pine pulpDoud, Edward 05 1900 (has links)
No description available.
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| 18 |
Neutral solvent pulping product characterizationJackson, Linda C. 08 1900 (has links)
No description available.
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| 19 |
The leaching of lignin macromolecules from pulp fibres during washing /Favis, Basil D. January 1981 (has links)
A method was developed for measuring the rate of leaching of lignin macromolecules from the fibre walls of unbleached kraft pulp fibres suspended in water. From a comparison of a theoretical analysis with experimental results, it was concluded that the leaching process was governed by a diffusion mechanism. Very low and widely polydisperse diffusion coefficients were observed for this system. The molecular weights of the leached lignins were found to increase with wash time. A comparison of the molecular dimensions with pore size indicated that a flat disk-like conformation, rather than a spherical conformation was appropriate for the lignin macromolecule. From 20(DEGREES) C to 70(DEGREES)C the change in the intrafibre diffusion coefficient with temperature varied directly as the ratio of the absolute temperature to the viscosity of water. Above 70(DEGREES)C there was a much larger dependence of the diffusion coefficient on temperature. The rate of leaching was also affected by the presence of electrolytes in the wash liquid; leaching was found to decrease with an increase in the ionic strength of the electrolyte. A conceptual model for this leaching effect is presented. The model offers a qualitative explanation for the experimental results noted above.
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| 20 |
An economic analysis of income determination for prodution workers in Oregon's wood products industry: a human capital approachErvin, David E. 26 September 1974 (has links)
Graduation date: 1975
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