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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:: Krukonis 1986; John- U.S. EnvironmentalProtection Agency, MS489, RiskRe- Ston et al. 1989). SCFS offer a

Creator:: Morrell, Jeffrey J.
Abstract:: The effect of various wood characteristics on decomposition of metham sodium to methylisothiocyanate in sixteen North American and Southeast Asian hardwoods and softwoods was investigated. While marked differences were noted in the degree of decomposition among some species, the relationship between decomposition and lignin content, extractive levels, wood pH, or...
Resource Type:: Article
Full Text:: borosilicate vials, and 15 p1 of metham sodium was added to each vial. Preliminary studies had shown that

Creator:: Forsyth, Paul G. and Morrell, Jeffrey J.
Abstract:: Basamid (3,5-dimethyl-l,3,5,2H-tetrahydrothiadiazine-2-thione), a crystalline powder first used as a soil sterilant, has shown promise as a wood fumigant. This chemical decomposes to methylisothiocyanate (MITC), the primary active ingredient, as well as other products; but the rate of decomposition in wood is too slow to be effective unless certain catalysts are...
Resource Type:: Article
Full Text:: -FIR 185 aldehyde and methylamine (Ruch and John- son 1957). Miller and Morrell (1 989) dem

Creator:: Lebow, Stan T. and Morrell, Jeffrey J.
Abstract:: Tests were conducted to determine the effect of ACZA composition on fixation and the roles of adsorption and precipitation in fixation. The sites of copper and zinc adsorption within the treated wood and the bonding environment of adsorbed copper were also examined. The results generally support the finding that arsenic...
Resource Type:: Article
Full Text:: process (Nicholas 1973), ours and previous reports (Cooper 199 1) suggest that copper adsorbs to wood

Creator:: Oregon State University. Forest Research Laboratory, Morrell, Jeffrey J., Graham, R. D. (Robert D.), and Miller, D. J.
Resource Type:: Other
Full Text:: gratefully acknowledge R.C. DeGroot, U.S. Forest Products Laboratory. Madison, Wisconsin; John Culp, Western

Creator:: Scheffer, T. C., Morrell, Jeffrey J., and Oregon State University. Forest Research Laboratory
Abstract:: Naturally durable woods have a variety of commercial uses. Natural resistance to decay has been evaluated in field and laboratory tests of wood from many species, but there are few places where commercial wood users can find comparative assessments of natural durability. In this report, previous studies have been used...
Resource Type:: Technical Report

Creator:: Morrell, Jeffrey J. and Oregon State University. Forest Research Laboratory
Abstract:: The specification, inspection, and remedial treatment of utility poles are addressed. Included are discussions of enhancing specifications for improved performance, techniques for detecting decay and other defects, and chemical treatments available for arresting decay of poles in service.
Resource Type:: Technical Report
Full Text:: in general use for wood protection; it was patented in 18�8 by John Bethell. Creosote is a mixture

Creator:: Morrell, Jeffrey J., Helsing, Guy G., Graham, R. D. (Robert D.), and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Oregon State Unive (Grant R/CP-18) for providing financial port; John D. Lew, University of Cal Forest

Creator:: Morrell, Jeffrey J.
Full Text:: protection; it was patented in 1838 by John Bethell. Creosote is a mixture of polynuclear aromatic

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