Index Catalog // ScholarsArchive@OSU

The bleaching response of kraft pulps from fresh and aged commercial Douglas-fir chips

Creator:: Lai, Jinn-Hsing
Resource Type:: Masters Thesis

Silencing of Agrobacterium tumefaciens T-DNA oncogenes by cosuppression

Creator:: Lee, Hyewon
Abstract:: We have developed crown-gall resistant transgenic plants capable of suppressing Agrobacterium tumefaciens T-DNA oncogenes. Crown gall tumors result from overproduction of auxin and cytokinin in plant cells transformed by A. tumefaciens. High phytohormone levels result from expression of two auxin biosynthetic genes, tryptophan monooxygenase (iaaM) and indole acetamide hydrolase (iaaH),...
Resource Type:: Masters Thesis
Full Text:: Cosuppression. Abstract approved: Walter Ream We have developed crown-gall resistant transgenic plants

The role of methanol in a methanol acid sulfite pulping process

Creator:: Wilson, Kenneth P.
Resource Type:: Masters Thesis
Full Text:: PrOcess Abstract approved: AN ABSTRACT OF THE THESIS OF Dr. W er J. Bublitz Adding methanol to an acid

Alternative methods for production of Douglas-fir linerboard quality pulp

Creator:: Gidlof, Pamela L.
Abstract:: Comparisons were made between anthraquinone modified soda pulp (soda-AQ), and methanol modified kraft (kraft-Me0H) and sulfite (sulfite-Me0H) pulps on western Oregon Douglas-fir. The kappa number, yield, brightness, and deshive values were all measured. The soda-AQ and kraft-Me0H pulps were the traditional brown color but the sulfite-Me0H pulps came out of...
Resource Type:: Masters Thesis
Full Text:: Quality Pulp. Abstract approved: AN ABSTRACT OF THE THESIS OF Waite J. Bublitz Comparisons were made

The application of fluorescence of pulping waste liquors to the control of laboratory and commercial pulping operations

Creator:: Wade, Dennis Clelan
Abstract:: Samples of Douglas-fir chips and western hemlock/true fir chips were pulped by the kraft and sulfite processes respectively. The spent liquors were analyzed for fluorescent response, and the fluorescent intensities of each liquor sample correlated with yields, Kappa numbers, and lignin contents of the pulps. Linear relationships were seen between...
Resource Type:: Masters Thesis

The effect of wood density on the kraft pulping properties of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Promachotikool, Montree
Abstract:: Three samples of different wood densities of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) were cooked by the kraft process. The yields and the Kappa numbers were studied to establish the rates and the energies of activation of the pulping and delignification reactions respectively. Wood properties did not show significant effects on...
Resource Type:: Masters Thesis

A study of deshive refining and its effects on high yield kraft pulp

Creator:: Knutsen, Daniel Peter
Abstract:: High yield unbleached kraft pulp for linerboard and bag paper was deshived in a PFI mill and a Bauer model 187 double disk refiner. Levels of plate gap, specific energy consumption, throughput rate, and stock consistency were varied to control PFI mill and Bauer 187 deshive refining. Shive content reductions...
Resource Type:: Masters Thesis

Effect of seedling characteristics on Kraft pulping properties of young Douglas-fir

Creator:: Chia, Shun Nan
Abstract:: A study has been made of the kraft pulping properties of young Douglas-fir trees which were thinned from an experimental plantation. The purpose of the plantation study is to determine, whether two year old seedlings can be selected on the criteria of height and branch count for future desirable tree...
Resource Type:: Masters Thesis

Pulping characteristics of Douglas-fir sawdusts

Creator:: Yang, Tsai-yeong
Resource Type:: Masters Thesis

Kraft green liquor pulping of Douglas-fir for corrugating medium

Creator:: Fang, Yi-Pygn
Abstract:: Douglas-fir wood chips from Oregon were pulped with kraft green liquor to produce semi-chemical pulps with properties suitable for the manufacture of corrugating medium. The effects of five cooking variables were studied, chemical charge, chip size, bark content of chips, pulping temperature, and liquor sulfidity. The combinations of levels of...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The bleaching response of kraft pulps from fresh and aged commercial Douglas-fir chips

Silencing of Agrobacterium tumefaciens T-DNA oncogenes by cosuppression

The role of methanol in a methanol acid sulfite pulping process

Alternative methods for production of Douglas-fir linerboard quality pulp

The application of fluorescence of pulping waste liquors to the control of laboratory and commercial pulping operations

The effect of wood density on the kraft pulping properties of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

A study of deshive refining and its effects on high yield kraft pulp

Effect of seedling characteristics on Kraft pulping properties of young Douglas-fir

Pulping characteristics of Douglas-fir sawdusts

Kraft green liquor pulping of Douglas-fir for corrugating medium

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