Radioactive chromium-51, a waste byproduct from operation
of nuclear reactors at Hanford, Washington, has been followed down
the Columbia River and into the Pacific Ocean. Chemical factors
influencing the partitioning of ⁵¹Cr between solution and sediment
have been considered.
Chromium-5l, in a hexavalent oxyanion when introduced into the
Columbia River,...
Monthly samples of nutrients, phytoplankton and zooplankton
were taken in the Columbia River estuary over a period of 16 months
in order to determine distribution with season and salinity, and interrelationships
between plankton and nutrients.
Nitrate and phosphate levels in the river water entering the
estuary are high in the...
Our major effort since initiation of this contract has been directed
toward (1) procuring the gamma-ray spectrometric equipment and integrating
the components into an operational system, and (2) analyzing
the samples obtained from the midwater trawl program of the Department
of Oceanography and evaluating and interpreting the resulting data
Analyses...
This report covers the first full year of operation of our gammaray
spectrometry facility. A part of the contract period was devoted
to calibration of the instrument, and therefore, a brief report on this
procedure is included.
Research on the application of soluble, metal chelates for
water tracing using thermal neutron activation analysis for tracer
determination has led to the development of several tracers with
promising solution stabilities (conservative behavior) and determination sensitivities. The solution stabilities of the ethylenediamine
tetraacetic acid (EDTA) and the diethylenetriamine pentaacetic acid...
Levels of ⁶⁵Zn in water, sediments, plants, and animals in
Alder Slough, a small ecosystem in the Columbia River Estuary,
were determined periodically during a one year period. Concentrations
of total Zn in organisms were also measured to permit
computation of specific activities (μCi⁶⁵Zn/g total Zn). Temporal
fluctuations in the...
Flexible aerodynamic surfaces have been shown to favorably influence flight characteristics at low Reynolds numbers by increasing lift, angle of attack at stall, and resistance to perturbation. The objective of the research presented within this thesis is to investigate the influence of two aspects of flight observed in biological flyers,...
In situ salinity, turbidity and temperature were measured at discrete depths and water samples for radioanalysis were simultaneously collected in the Columbia River Estuary using a specially designed instrument package. Particulate radioactivity was concentrated by filtration and the dissolved radioactivity by evaporation or ferric oxide bulk precipitation. Radioanalysis was by...
A liquid-extraction procedure for the concentration of zinc in
sea water was developed. The metal ion in sea water was chelated
with sodium diethyldithiocarbamate and extracted into an organic
solvent, methylisobutylketone, at the normal pH of sea water. A
back-extraction into HCl followed, providing a concentration of 30X
for the...
Lab notebooks with lengths and weights of tested samples. Includes capture dates, depths and dates samples went into detector. Date of coverage: 11/28/91 to 11/12/65.
This report covers somewhat more than a full year of operation.
Individual contracts between the AEC and Oregon State University covering
the research of William Pearcy, Andrew Carey, Jr. , and Charles Osterberg
were combined into a joint contract on 1 November 1964. No Progress
Reports for the unexpired portions...
This history concerns the scientific contributions of Charles
Babbage (1791-1871) to mathematics, to the invention of calculating
machines, and machine tools, to the development of scientific ideas
through a wide variety of scientific investigations and his involvement
in several different scientific reforms. Babbage considered himself
a philosopher in the broadest...
Dedicated to recording, portraying, and indicting
the social inequities that he witnessed in nineteenth
century Victorian England, one of Charles Dickens' many
concerns was the roles assigned to women both in the
public and private spheres.
The purpose of this thesis is to examine the
narratives of Amy Dorrit and...
An intensive chemical investigation, that includes the
determinations of salinity, oxygen, nutrients, pH, alkalinity, and
total carbon dioxide of the Columbia River plume off the Oregon
coast in July 1967 shows the following unique features:
1. Along the axis of the river plume both the salinity minimum and
temperature maximum...
This is a bibliography of the work of T. L. Jackson, who conducted research at the North Willamette Research and Experiment Center. It is limited to those Extension publications and research reports that addressed the nutrient needs of fresh market and processed vegetables.
The purpose of this study of the life and career of Dr. Carl
Leonard Anderson was to recount his professional contributions to
the field of health and relate these to public health and health education. The major emphasis of this study concerned Dr. Anderson's
professional life.
The accomplishment of the...
A seed maturation study was conducted to determine the earliest
date seed of subterranean clover (Trifolium subterraneum L.) may be
safely harvested without reduction in yield or seed quality. In 1981
and 1982, seed and bur weight, seed and bur moisture content, germination and seedling vigor were studied to determine...
Three isolates of Escherichia coli were labeled by their resistance
to sodium azide and, separately, to novobiocin, nalidix acid, and tetracycline.
The strains exhibited a high degree of persistence in the soil
environment and were recoverable on strain specific media at levels
within the 95% confidence interval of the numbers...
L. C. Dunn (1893-1974) spent most of his scientific career conducting research in
developmental genetics as a member of the Zoology Department at Columbia
University in the City of New York. He had an accomplished scientific career
researching mutations in mice, which earned him respect from other geneticists and
scientists....
Crossover frequencies for seven selected regions on five
chromosomes of maize were measured to ascertain the effect of
chelating agents on recombination. Ethylenediamine tetraacetic acid,
EDTA, and dimethyl sulfoxide, DMSO, were used in three concentrations
singly, and in all combinations. Plants heterozygous for
for linked genes governing seed and seedling...
For the Army aviator, Night Vision Goggle (NVG) flight in the tactical rotarywing
profile is a very demanding, task saturated environment. Map navigation is just one
of the many tasks that must be accomplished during flight. The dim, monochromatic
lighting required for NVG flight alters map colors, decreases image detail...
The Oregon Dunes National Recreation Area is managed by the Siuslaw
Forest division of the United States Forest Service (USFS). This area has gradually been
overcome by vegetation since the 1950's, originating with the exotic European Beach
Grass (Ammophila arenaria). The invasion of this exotic vegetation has resulted in a...
An emergency management system integrating remote sensing and geographic
information systems applied to emergency preparation, response, and recovery could
have reduced casualties and damage after the August 17, 1999 Kocaeli, Turkey
earthquake. Model system components include a horizontally and vertically distributed
knowledge base, LIDAR 3D urban modeling, automatic feature extraction,...
The purpose of this study is to determine if the
ntoraines damming proglacial Carver Lake are ice-cored.
The methodology to be employed consists of interpretation
of aerial photographs and field observations. The results
of these studies will be compared. to past research of
known ice-cored moraines in other regions of...
Hart Mountain is a basaltic fault block mountain
in the semi-desert region of the northern Basin and Range
province in south-central Oregon. Geomorphic processes
associated with lingering snowpatches have formed nivation
hollows, which are small scale depressions in the hillsides.
The lingering snow in the hollows prohibits shrub
growth. Bedrock...
Much of the rich forestlands of Oregon are subject to frequent mass wasting
events, resulting in severe environmental and economic damages. Extensive research has
shown that this landslide hazard is often exacerbated by many management activities.
Following a severe storm event which triggered thousands of landslides, the Oregon
Department of...
Pre-flood (1995), and post-flood (1996) channel stability surveys were conducted on 22 reaches along Oak Creek, Benton County, Oregon in an effort to note if the flood of February 1996 altered the channel and if the channel stability survey that was being used accurately predicted the channels resistance to change...
Pleistocene glaciation in the upper elevations of the
Western Cascade Mountains took two characteristic forms: cirque and
valley glaciers. Field observations in the Neal Creek and Thomas
Creek drainage areas of Snow Peak provide evidence of three glacial
advances. Glacial landforms in the Neal Creek Valley are dominated
by a...
Geographical geomorphology is a young science with a long,
complex history closely paralleling the growth and development of
geology. From an enthusiastic beginning under the tutelage of
William Morris Davis, geographical geomorphology rapidly lost its
influence and stature in geography. Today there is a sense of
purpose and direction that...
The 18 May 1980 eruption of Mount St. Helens, emplaced between 3-3.5 billion cubic yards (bcy) of poorly sorted material ranging from silt to boulders, extending from river mile (RM) 25 to RM 38 in the upper North Fork Toutle River drainage. Sediment yields from the debris avalanche were calculated...
Bangladesh lies almost entirely on the delta of three major rivers: the Padma (the
Ganges), the Jamuna (the Brahmaputra), and the Meghna. A considerable portion of
Bangladesh has been repeatedly devastated by floods associated with cyclonic storm
surges along its coastal islands and riverine flooding along the rivers traversing the...
Landslide processes occurring on a hillslope in McDonald-Dunn
Forest on the eastern slope of the Oregon Coastal Range are
described in terms of type, magnitude. minimum age and site
characteristics. Debris flows and debris avalanches are the
dominant types of slope movement occurring in the study area.
Landslide events classified...
Louisiana Army Ammunition Plant (LAAP), located near Shreveport, Louisiana, is a
government-owned contractor-operated plant. Its purpose is to manufacture, load and
assemble ammunition items. Area P has been used over the past 40 years to dump
explosive-laden wastewater into 16 unlined lagoons. In 1989 LAAP was placed on the
National...