Improving the methods used for the detection and estimation of fissile material mass content is essential to nuclear security and safeguards to ensure special nuclear material (SNM) accountability, control, safety and security. With the continued expansion of the nuclear industry and the need for safe management of spent fuel, improving...
We present in situ electrode measurements of sediment resistivity, pore water oxygen, and pore water pH from three stations between 2300 and 3000 m depth on the Ontong-Java Plateau in the western equatorial Pacific. One of these stations is also the site of a concurrent benthic chamber incubation experiment [Jahnke...
After Colonization and since the beginning of the globalization era, governments in developing countries have been restricted in implementing certain policies and reforms, often being forced to accept or borrow policies from former colonizers or other developed countries and non-governmental organizations (NGOs). Previous studies found that borrowing policy often leads...
Acidity distribution within any given soil profile is dependent on
mineralogical make-up of the parent material as well as environmental conditions prevalent during the weathering history of the soil.
An experiment was designed to study the distribution pattern of exchange acidity, exchangeable aluminum, exchangeable manganese and
pH of six acid...
Levee management has historically been considered a local governance issue. Many users of the Portland International (PDX) airport may have no knowledge that the airport is in a floodplain and is protected by a hundred year old levee. This study asked survey respondents across the U.S. how much they would...
We have used the vanadium concentration in cleaned foraminiferal calcite as a tracer
of seawater V changes in the past. Since the benthic flux of vanadium is sensitive to the redox potential
of sediments, changes in the vanadium concentration of seawater should be a reflection of
changes that control the...
A stochastic process is given by a family of random variables indexed by elements of a set. We have considered stochastic processes of three different types, each involving an associated martingale structure. Martingale is a sequence of random variables for which the conditional expectation at a certain time point given...
Markov Decision Processes (MDPs) are the de-facto formalism for studying sequential decision making problems with uncertainty, ranging from classical problems such as inventory control and path planning, to more complex problems such as reservoir control under rainfall uncertainty and emergency response optimization for fire and medical emergencies. Most prior research...
Marine bivalves are globally recognized as ecologically and commercially valuable species and, for over a century, researchers have been studying their feeding, digestion and other related physiological processes. These studies have shown that marine bivalves have complex feeding and particle processing behaviors to maximize growth in dynamic environmental conditions. Additionally,...
Since the discovery of penicillin in 1928, the fungal kingdom has remained a fertile source for the discovery of new, biologically active, natural products. Further, as natural products continue to be discovered from fungi, a deeper understanding of the critical role of specialized metabolism in fungal ecology is afforded. The...
Westward transport of water vapor across the Panama Isthmus helps to
maintain the salinity contrast between the Atlantic and Pacific Oceans, important in
thermohaline circulation and global climate. Relatively low sea-surface salinities and a
strong, shallow pycnocline in the eastern Pacific warm pool (EPWP) region near
Central America reflect high...
Periodic determinations of plasma hormone levels suggested that changes in interrenal activity are unrelated to changes in thyroidal or gonadal activity during development (smoltification) of juvenile coho salmon (Oncorhynchus kisutch). Moreover, in an experiment where fish were reared under various conditions of crowding and water inflow rate, it appeared that...
Potentially relevant literature for the years 1990-1999 was identified by (a) conducting keyword searches of computerized bibliographic databases, especially CAB Abstracts and Aquatic Sciences and Fisheries Abstracts, (b) reading through the tables of contents of a few especially relevant journals, (c) searching the internet for pertinent bibliographies, and (d) to...
The Conference Program for IIFET, held July 10-14 in Corvallis, Oregon. Program lists the sessions by date and time and includes the session titles, speakers and paper titles.
Diatom remains indicate the oceanic Ge/Si ratio (μmol/mol) has varied temporally, ranging from Miocene values of 0.9 to Last Glacial Maximum (LGM) values of 0.55, with the present value of 0.69. These ratios lie between those for the primary sources for these elements: continental weathering (Ge/Si = 0.5) and hydrothermal...
In Artemia salina nauplii acclimated in 0.25 M, 0.5 M, 1.0 M, 1.5 M,
2.0 M, and 2.5 M NaCl incorporation of ¹⁴CO₂ into free amino acids was
greatly stimulated in the higher salinities. The ¹⁴C label was found in
aspartic acid, serine, glutamic acid, proline and alanine.
Hypersalinity also...
The purpose of this study was to determine the impact a narrative reflecting team experience has on counselor self-efficacy. Through a quasi-experimental design, the use of a narrative reflecting team supervision model was compared to supervision as usual with graduate counseling students (N=12). The Counselor Self-Estimate Inventory (COSE) was chosen...
Snap beans are the vegetable form of dry bean (Phaseolus vulgaris L.) with low fiber, stringless and round, succulent pods that are eaten in the immature stage. Seed companies commit significant resources to maintaining purity and uniformity of snap bean cultivars. While some variability may be introduced through outcrossing (beans...
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give special thanks to
Steve Hill for endless hours of computational work and thesis writing support
A seasonal hair-loss syndrome of native deer began to occur in the Pacific Northwest United States in the mid-1990s. Clinical manifestations of the disease typically include large numbers of chewing lice on Columbia Black-tailed deer (Odocoileus hemionus columbianus) and Columbia White-tailed deer (Odocoileus virginianus leucurus). Expenditure of energy responding to...
Published September 1973. 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