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Filtering by: Subject Wood-pulp -- Analysis Remove constraint Subject: Wood-pulp -- Analysis Peer Reviewed No Remove constraint Peer Reviewed: No

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Improving the durability of second growth timbers of naturally durable species

Creator:

Cabrera Orozco, Yohanna

Abstract:

While the heartwood of many wood species exhibits excellent resistance to fungal and insect attack, this resistance is sometimes diminished in second-growth material of the same species. The reasons for the reduced durability are unclear, but they may reflect a combination of both higher proportions of sapwood as well as...

Resource Type:

Masters Thesis

Full Text:

of Master of Science in Wood Science presented on March 12, 2008. Title: Improving the Durability
Molecular weight distribution analysis of wood pulp cellulose by size exclusion chromatography

Creator:

Silva, Arlene Avenido

Abstract:

Automated size exclusion chromatography with a differential refractometer detector was employed to study the molecular weight distribution patterns in various types of wood pulp cellulose. The results obtained were correlated with the conventional methods of measuring these properties. The dissolution of pulp celluloses in N,N-dimethylacetamide-lithium chloride solvent was optimized. This...

Resource Type:

Dissertation
An investigation of the effect of dihydroquercetin and quercetin on bleaching of Douglas-fir groundwood

Creator:

Meng, Tommy Yi

Abstract:

Sapwood and heartwood groundwood samples were prepared separately from a second growth, coastal range, young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). The bleaching responses of these two groundwoods to zinc hydrosulfite were examined, and the roles of both dihydroquercetin and quercetin in this bleaching reaction were investigated. Heartwood groundwood was identified...

Resource Type:

Masters Thesis
Foam separation of organic and toxic materials in kraft mill effluents

Creator:

Blazier, James Lewis

Abstract:

Because of the organic nature and the natural foaming characteristics of kraft mill effluents, it was decided to investigate the feasibility of using foam separation as a method of treatment. The treatment efficiency was evaluated by BOD and COD reductions as well as the decrease in toxicity to marine life....

Resource Type:

Masters Thesis

Full Text:

toxicity to rnarine life. Grab sarnples of the whole rnill effluent obtained frorn a kraft pulp and paper

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Academic Affiliation

Forest Products2
Civil Engineering1
Wood Science and Engineering1

Advisor

Bublitz, Walter J.1
Laver, Murray L.1
Merryfield, Fred1
Morrell, Jeffrey1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1966 to 2008

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Committee Member

Lachenbruch, Barb1
Soeldner, Al1
Stone, Jeffrey1

Creator

Blazier, James Lewis1
Cabrera Orozco, Yohanna1
Meng, Tommy Yi1
Silva, Arlene Avenido1

Date

Date range begin – Date range end

Current results range from 1965 to 2008

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Decade

2000-20091
1990-19991
1970-19791
1960-19691

Degree Field

Forest Products2
Civil Engineering1
Wood Science1

Degree Level

Master's3
Doctoral1

Degree Name

Master of Science (M.S.)3
Doctor of Philosophy (Ph.D.)1

File Format

application/pdf1

Language

English [eng]4

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No[remove]4

Resource Type

Masters Thesis3
Dissertation1

Rights Statement

Copyright Not Evaluated3
In Copyright1

Subject

Wood-pulp -- Analysis2
Cellulose -- Analysis1
Foam1
Heartwood -- Preservation1
Sewage -- Analysis1
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