Model testing has proven to be an effective tool in the study of
soil-structure systems. While primarily used in research work, this
method of evaluation is also applicable to the solution of many types
of complex design problems. Because of its workability and relatively
simple characteristics, sand is the most...
The theoretical characteristics of space-charge-limited
currents in solids are reviewed, and a survey of
suitable dielectric materials and experimental space-charge-limited devices is presented.
The properties of the gold-silicon contact as used
in space-charge-limited devices were experimentally investigated.
It was found that the observed characteristics
could be explained on the basis...
The reactions of EGTA, [ethylene bis (oxyethylenenitrilo)]
tetraacetic acid, with 51 metal ions have been studied spectrophotometrically in aqueous solutions.
The absorption spectra of the
chelates formed were measured with a recording spectrophotometer
between 200 and 700 mμ. The pH of each solution was varied and a
spectrum was scanned...
The farmers of the Columbia Plateau region of Oregon, as well as other individuals and groups, have expressed a desire for information on the economic feasibility of irrigated farming in their area. This recent interest in irrigation is a result of reduced lifts and lower pumping costs brought about by...
The purpose of this thesis is to determine if the Oregon State
Forestry Department's stocking survey system can be applied to planted
acres as well as to seeded acres. Two computer programs were developed
into a primary program. One produced a new stocking curve adapted to
hand planting patterns, and...
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...
An apparatus was designed to permit freezing tests of
needles and other tissue parts from coniferous trees under
controlled rates of temperature change with time. The design
is based on the principle of a balanced system of refrigeration
demand and heat input to achieve a steady temperature state.
The apparatus...
Studies were conducted within a 12-mile radius of Camp Sherman, Oregon, in the Deschutes National Forest during the spring and summer of 1965 and the spring of 1966, with one follow-up visit in the summer of 1967. The feeding and foraging activities of Eutamias amoenus and Citellus lateralis were observed,...