A gas chromatographic procedure was developed for the determination
of nanogram quantities of hydrocyanic acid using a
flame ionization detector. Excellent chromatograms were obtained
on a porous polyaromatic polymer column (Porapak Q) at 60°C. The
procedure was employed for the analysis of HCN in aqueous cyanide
solutions. Solutions as low...
The Timoshenko beam theory, as an engineering alternative to
the elementary and exact theories, introduces a factor, k', called
the shear coefficient which has been given various interpretations and
values. It is the objective of this study to experimentally evaluate
k' for a brass bar of rectangular cross-section.
Analytical results...
The effects of round, square, and reentrant entrances on flow
regimes and local heat transfer coefficients were determined using a symmetrical,
plane-wall two-dimensional, subsonic air diffuser with one
of the diverging walls heated and maintained isothermal.
Flow and heat transfer studies were made at total divergence
angles ranging from 0...
It is the purpose of this paper to review the literature on computer simulation in forest management, and to present the adaptation of a stand model to Douglas fir as part of the development of a forest management simulation model.
The effects of boundary geometry on internal density currents
in a density stratified reservoir were investigated in a laboratory
model. When water was simultaneously withdrawn and admitted to
the reservoir, a complex current regime was established. The general
flow pattern is described, and the influence of physical variables
on the...
Cultivated lilies include many garden varieties in addition to
the Easter lily, Lilium longiflorum Thunb. A popular member of
the garden group is Lilium speciosum Thunb., whose leaves can be
discolored by a virus symptom described as streak mottle. This
disorder is characterized by dashes of chlorotic tissue interspersed
with...
Moisture has long been identified as one of the major
limiting factors in the distribution of agricultural land use practices.
However, the importance of any environmental element can only be
determined by considering how it is affected by its relationship with
other elements of the environment. Thornthwaite's moisture index
attempts...
Recreational resources of the Owyhee Breaks
Recreation Area are almost all of the extensive type such
as sightseeing, hunting, pleasure boating and rockhounding.
However, because of the increasing use both
past and projected, it is imperative that facilities be developed
to make these areas more useable and more enjoyable
to...
This research is an effort to appraise the results of the 1963
legislation, especially in terms of the spatial aspect. Has it achieved
the desired purpose? How many, and what size of farms are involved?
Where are these farms located?
The research field work resulted in a definitive map showing...
Taking advantage of a favorable physical system but also risking the hazards of flooding, man has long occupied flood plain land. He has attempted to adjust rivers to his needs in order to reduce flood loss, but the rising cost of flood protection accompanied by an increase in flood damage...
Re searchers have long tried to correlate weather factors with plant disease occurrences. However, inconclusive results have usually been obtained because most plant diseases have biologic as well as climatic optimums.
In this study, thirty weather variables were correlated, by the stepwise regression method in a computer, to the amount...
PART I. A chemical examination of the materials toxic to fish in
kraft pulp mill wastes has been made as part of a water pollution
study. Thirty gallons of "foul condensate" from a typical kraft mill
gave 14 g of organic material when extracted with methylene chloride,
and an additional...
Some kinetics of the oxygen requirement of amine oxidases
have been investigated using bovine plasma monoamine oxidase (PAO)
and pea seedling diamine oxidase (DAO). A system is described for
studying enzyme reactions under controlled oxygen tension and in an
O₂-free N₂ atmosphere.
O₂ Km values were determined at two different...
Published December 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
At the time of the inception of this study in September 1968, the plywood market appeared to be taking a strong reversal of its general trend over the last 20 odd years. This prompted the author to decide to study the plywood market and its pricing structure to see if...
This report includes information concerning experimental use of unregistered pesticides or unregistered uses of pesticides. Experimental results should not be interpreted as recommendations for use. Use of unregistered materials or use of any registered pesticides inconsistent with its label is against both Federal Law and State Law.
This paper develops an equation, from an heuristic set of assumptions,
which describes the axial current, leakage current, resultant
electric field, and resultant earth potential occurring when
a pipeline buried within a resistive earth is subjected to a distributed,
primary, axial, electrostatic field produced from a high-voltage, direct-current (HVDC) power...
The concentrations of iodophor necessary to reduce the activity
of several metabolic enzyme systems 50 percent was used as the
basic approach in attempts to elucidate the mechanism of germicidal
action of iodine. For comparisons, a chlorine-releasing germicide
(Trichlorocide) and a quaternary ammonium compound were also
tested. It was found...
This thesis deals with the output statistics of nonlinear devices.
It develops the classical output autocorrelation function in two dimensions
and extends the theory to three and four dimensions. Closed
form solutions for the output correlation function in two and three
dimensions are given for the full- and half-wave rectifier...
In this paper we use the set of all positive integers as a sample space whose probability density function is unknown. Then a generalization of the probability distribution of the most significant digits of the set of all physical constants is obtained on the strength of (i) a very general...