Dihydroquercetin [(2,3-trans)-3,3',4',5,7-pentahydroxyflavanonol]
was shown to be the precursor to the phenolic
stains that often develop in Douglas-fir [Pseudotsuga
menziesii (Mirb.) Franco] sapwood. Douglas-fir sapwood was
extracted with methanol and the methanol solubles were
fractionated by solvent partition, thin-layer chromatography,
silica-gel column chromatography, and Sephadex gelpermeation
chromatography. Tyrosinase, a commercially
available...
Published March 1981. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This work examines the varied populations which have inhabited the South Fork region from prehistoric times to the present.
It disclosed that even though almost no archaeology has been done
in the area, data from contiguous regions suggest that persistent
and careful archaeological investigation should reveal valuable
and informative sites...
The purpose of the study was to explore the ethnic identity of
Chinese American adolescents through the investigation of
relationships between ethnic identity and selected demographic,
sociocultural, and psychological characteristics.
Data were obtained from 106 Chinese American youth between the
ages of 14 and 21 through the use of two...
The purpose of this study was to investigate physical education
and sport in Thailand and, based upon expert opinion, to develop a
blueprint of physical education and sport for the nation building of
Thailand. The investigation concentrated on the history, role and
function, purpose of governmental involvement, and future prospects...