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Filtering by: Creator Sahle-Demessie, Endalkachew Remove constraint Creator: Sahle-Demessie, Endalkachew Language English [eng] Remove constraint Language: English [eng]

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Dynamic modeling of thermal treatment of timber poles

Creator:

Sahle-Demessie, Endalkachew

Abstract:

The temperature-time-location relationships during steam conditioning and pressure treatment of timber poles have been studied and mathematical models that take into account both the thermal properties of the poles and the parameters of the treatment process have been developed. Although much work has been previously done in this area, the...

Resource Type:

Masters Thesis

Full Text:

ABSTRACT OF THE THESIS OF Endalkachew Sahle-Demessie for the degree of Master of Science in Chemical
Deposition of chemicals in semi-porous solids using supercritical fluid carriers

Creator:

Sahle-Demessie, Endalkachew

Resource Type:

Dissertation

Full Text:

supercritical fluid carriers AN ABSTRACT OF THE THESIS OF Endalkachew Sahle-Demessie for the degree of Doctor
Supercritical carbon dioxide treatment: Effect on permeability of Douglas-fir heartwood

Creator:

Demessie, Endalkachew Sahle, Hassan, Ali, Levien, Keith L., Kumar, Satish, and Morrell, Jeffrey J.

Abstract:

The effect of supercritical fluid treatment on superficial gas permeability of Douglas-fir was investigated by using carbon dioxide either alone or amended with methanol. Permeability increased in a majority of samples, although nearly one-third of the specimens declined in permeability. Improvements in permeability appeared to be unrelated to variations in...

Resource Type:

Article

Full Text:

OF DOUGLAS-FIR HEARTWOOD1 Endalkachew Sahle Demessie Graduate Research Assistant Ali Hassan
Solubility of biocides in pure and modified supercritical carbon dioxide

Creator:

Junsophonsri, Sarawadee

Resource Type:

Masters Thesis

Full Text:

great thanks also to Endalkachew Sahle-Demessie and the group of the supercritical fluid lab for the
The extraction of pentachlorophenol from pressure treated wood using supercritical carbon dioxide

Creator:

Yi, Jung-Seok

Abstract:

The extraction of pentachlorophenol (PCP) from pressure treated wood wafers with supercritical carbon dioxide has been studied. Experimental data were obtained for the effects of pressure (17.5 - 25.0 MPa), temperature (313 - 353 K), flow rate (1 - 3 ml/min at supercritical conditions), and sample size (0.8 x 10...

Resource Type:

Masters Thesis

Full Text:

throughout my studies. Special thanks are due to Endalkachew Sahle-Demessie and other colleagues of my
Phase behavior of multicomponent mixtures of complex molecules in supercritical fluids

Creator:

Hassan, Ali (Ali Humaid)

Resource Type:

Dissertation

Full Text:

are greatly appreciated. 11 I would like to thank a very good friend, Endalkachew Sahle, for his
OSU theses and dissertations : 1983-1992

Creator:

Glenn, Judith A.

Abstract:

Departmental and author index of Masters' theses and doctoral dissertations accepted by the Graduate School.

Resource Type:

Book

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Academic Affiliation

Chemical Engineering5
College of Forestry1

Advisor

Levien, Keith L.5

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1990 to 1997

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Unknown 2

Committee Member

Milota, Michael1
Morrell, Jeffrey1

Creator

Sahle Demessie, Endalkachew2
Demessie, Endalkachew Sahle1
Glenn, Judith A.1
Hassan, Ali1
Hassan, Ali (Ali Humaid)1
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Date

Date range begin – Date range end

Current results range from 1989 to 1997

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Decade

1990-19996
1980-19891

Degree Field

Chemical Engineering5

Degree Level

Master's3
Doctoral2

Degree Name

Master of Science (M.S.)3
Doctor of Philosophy (Ph.D.)2

File Format

application/pdf1

Language

English [eng][remove]7

Non-Academic Affiliation

Oregon State University. Graduate School5
Oregon State University. Libraries1
Oregon State University. Press1

Peer Reviewed

No6

Resource Type

Masters Thesis3
Dissertation2
Article1
Book1

Rights Statement

Copyright Not Evaluated6
In Copyright1

Subject

Supercritical fluids2
Carbon dioxide1
Dissertations, Academic -- United States -- Bibliography -- Catalogs1
Douglas fir1
Oregon State University -- Dissertations -- Bibliography -- Catalogs1
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