Oxides of nitrogen are a concern as effluents to atmospheres
because they participate in photochemical reactions which produce
smog, because they attenuate sunlight which gives the atmosphere a
reddish brown cast, and because of their toxic properties and the
health hazards associated with the photochemical products they produce.
Oxides of...
The development of personal computer software
coupled to an analytical stereoplotter allows major gains
in efficiency and accuracy in a number of forestry related
subjects. This thesis describes the operation of a system
developed by Carto Instruments.
This thesis demonstrates how area estimates might be
made in a systematic way...
The volcanic rocks of the Harney Basin comprise a bimodal
assemblage of rhyolites (SiO₂ greater than 72%) and basalts (SiO₂
less than 52%). Tholeiitic basalts account for 15 rocks analyzed and
alkalic basalts for three. Most basalts contain phenocrysts of olivine
and plagioclase. Pyroxene phenocrysts were not found. Rhyolite
flows...
The volcanic rocks of the Harney Basin comprise a bimodal
assemblage of rhyolites (SiO₂ greater than 72%) and basalts (SiO₂
less than 52%). Tholeiitic basalts account for 15 rocks analyzed and
alkalic basalts for three. Most basalts contain phenocrysts of olivine
and plagioclase. Pyroxene phenocrysts were not found. Rhyolite
flows...
Full Text:
, Oregon
AN ABSTRACT OF THE THESIS OF
DONALD JAMES PARKER for the DOCTOR OF PHILOSOPHY
(Name) (Degree
This thesis addresses the problem of deciding whether or not
two disjoint random samples that are fitted by the same regression
equation emanate from the same parental population. Two situations
are considered. The first situation is where the two disjoint samples
are individually fitted with the regression equation. The second...
The purpose of this study was to ascertain to what degree, if
any, there was a difference of opinion among students, parents and
faculty in regard to student behavior as that behavior pertained to
general conduct, drug use, mischief, sex offenses, drinking, cheating
and theft.
The research study was conducted...
The volcanic rocks of the Harney Basin comprise a bimodal
assemblage of rhyolites (SiO₂ greater than 72%) and basalts (SiO₂
less than 52%). Tholeiitic basalts account for 15 rocks analyzed and
alkalic basalts for three. Most basalts contain phenocrysts of olivine
and plagioclase. Pyroxene phenocrysts were not found. Rhyolite
flows...
Zero-field quantum beats were observed in
Lyman-Beta emission from hydrogen atoms formed by beam-foil
excitation.
The
energy dependence of the magnetic
substate relative cross sections
for the n=3, L=1 states of H was determined
for beam energies in
the range from 230 to 500 keV per atom.
The theoretical values...
Polymorphic site index curves for noble fir from stem analysis
data were compiled from 54 plot locations. On each plot location,
the tallest dominant noble fir was felled and sectioned. Site index
was based on total height and age at breast height, with index age
at 100 years. A graphical...
Tanoak lumber might supplement the supply of white oak for boat construction, as the tree has extremely thick sapwood that can be pressure- treated readily with preservatives.
One-inch tanoak lumber was kiln -dried to 3 different moisture content ranges, then pressure -treated with water -borne preservatives. Some unseasoned lumber was...
Environmental restrictions have induced many sawmills to seek alternatives to pentachiorophenol (penta) and similar chlorinated phenols for controlling mold and fungal stains on green lumber during storage and shipment. For that purpose, ten alternative stain preventives were evaluated against a traditional penta product (Permatox 101) on studs of Douglas-fir [Pseudotsuga...
Environmental restrictions have induced many sawmills to seek alternatives to pentachlorophenol (penta) or similar chlorinated phenols to control fungal sapstains on green lumber. Five alternative preventives were evaluated against a traditional penta product (Permatox 101) on Douglas-fir, hem-fir, and pine lumber in an accelerated 6-week test on small specimens in...
Production of hardwood lumber (mostly red alder) has been a small but growing part of the forest products industry in the Pacific Northwest. In laboratory tests, Rodewod® 200 EC plus borax protected alder at nearly all levels tested. Eight other chemicals provided some protection at the highest level tested. Fungal-stain...
Published February 1968. 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
Eight series of untreated posts (including five series of steel), 18 series of nonpressure-treated posts, and II series of pressure-treated posts remain in test at the Oregon State University post farm in western Oregon. So far all posts have failed in 36 untreated series, 33 nonpressure-treated series, and 2 pressure-treated...
Untreated and preservative-treated fence posts were exposed in soil at a test site near Corvallis, OR. Several species, including western juniper and Osage-orange, showed exceptional natural durability. Preservative treatment generally extended the useful life of the posts, but the degree of protection varied with the chemical and the application method.
Published June 1965. 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
As in various freshwater and coastal marine ecosystems worldwide, seasonal bottom water hypoxia is a recurring phenomenon in Lake Erie's central basin. While bottom hypoxia can strongly affect sessile benthic animals, its effects on mobile organisms such as fish are less understood. We evaluated the potential for bottom hypoxia to...
This is a fertilizer guide for commercial wholesale nurseries that produce shade and flowering trees for bareroot sales. Reviewed October 2010. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The Amsterdam-St. Paul Plateau is bisected by the intermediate-rate spreading Southeast Indian Ridge, and numerous geophysical and tectonic anomalies arise from the interactions of the Amsterdam-St. Paul hotspot and the spreading center. The plate boundary geometry on the hotspot platform evolves rapidly (on timescales <1 Myr), off-axis volcanism is abundant,...
Published October 1967. 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