These principles are relatively few and direct. For odor detection to occur, odorous compounds must be (a) formed,
(b) released to the atmosphere, and
(c) transported to the place of detection.
When you prevent or inhibit any of these steps, you reduce or remove the odor problem.
Young trees (those with a trunk diameter of less than 6 inches) can benefit greatly from regular applications of fertilizer. Research has shown that when these trees receive nitrogen fertilizer, they grow faster, develop a denser canopy, and stay green longer into the fall.
Garlic grows well throughout the Northwest. There are two types of garlic frequently grown in home gardens: Allium sativum, the more commonly cultivated type, also called silverskinned or Italian garlic; and Allium ampeloprasum, usually called greatheaded or elephant garlic. The latter is more of a novelty because of its large...
Published January 2001. Reviewed March 2012. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The authors demonstrate the generation of multicycle narrow-bandwidth terahertz pulses in periodically inverted GaAs structures using optical rectification of 2 μm, 100 fs pump pulses. Three different types of orientation-inverted samples are employed: optically contacted multilayer, orientation-patterned, and diffusion-bonded GaAs. The terahertz pulses are characterized by two-color (pump at 2...
The purpose of this study was to evaluate the impact sediment has on the survival of
bacteria in a typical rangeland stream. This information is an important component in
determining a time integrated prediction of bacterial numbers in the stream sediment and
overlying water. Bacterial survival in stream is a...
Stem mapping of all trees greater than 15 cm dbh has
been completed on the 10.24 hectare watershed (No. 10) at H. J.
Andrews intensive study site. Using a 25 m grid system, mapping
of vegetation into 7 plant communities and then into 4 habitat
types has also been completed....
CTD observations were made along the CODE Central Line, extending offshore toward 225°T from the California coast at 38°40'N, during 12-14 April, 1981. The complete section with nine stations was occupied twice; the offshore portion was occupied three times. The maximum sampling depth was 1000 m. This report includes a...
Background: Mangroves are ecologically important and highly threatened forest communities. Observational and genetic evidence has confirmed the long distance dispersal capacity of water-dispersed mangrove seeds, but less is known about the relative importance of pollen vs. seed gene flow in connecting populations. We analyzed 980 Avicennia germinans for 11 microsatellite...
We constructed an experimental apparatus that used lasers to provide the probe beams for measuring the transient absorption kinetics of bacterioplankton that contain proteorhodopsin, a microbial protein that binds retinal and is analogous to animal rhodopsin. With this approach we were able to observe photocycles characteristic of functioning retinylidene ion...
This thesis describes investigations of marine algal secondary metabolites, with particular interest in their biomedical and agrichemical potential. Invaluable in such pursuits have been the access and application of advanced spectroscopic techniques, such as NMR, and the ability to assess the biological activity of the algal samples in a variety...
The Purpose: The purpose of this study is to develop an original validated Lickert-type attitudinal survey instrument and administer it to selected samples of teachers and students in the Mid-Willamette Valley of Oregon to determine their attitude toward the "purposes," "functions," and "responsibilities" of student councils and place these results...
This biological assessment (BA) documents the potential effects of existing Forest Service (FS) Land and Resource Management Plans (LRMPs), or 'Forest Plans' and Bureau of Land Management (BLM) Land Use Plans (LUPs) on the Canada Lynx (Lynx canadensis), hereafter referred to as the lynx. LRMPs and LUPs are collectively referred...
Most of the research on wave energy conversion
has been focused on the characterization of the
dynamic behavior of arrays of uncontrolled WECs in
specific configurations, in order to quantify changes
in the wave fields and absorbed power without active
control. To maximize wave energy conversion, however,
it is necessary...
Published October 1991. 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
This thesis covers the use of a quarter car model to select damping rates for aFormula Student (FS) car, focusing on minimizing vertical tire force variation to improvegrip. A 2 degree of freedom (DOF) quarter car model is cycled over the road frequenciesof interest and the results compared with the...
Published October 1983. 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
Published October 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
A given variety of apple or pear reaches harvest maturity at about the same time each year. In districts with cool growing seasons, fruit usually matures later than in the warmer districts. Within a district, the time of maturity varies slightly from season to season. In order of importance, then,...
This is the fourth in a series of studies to evaluate perceptions of U.S. Department of Agriculture Forest Service law enforcement personnel of the roles, responsibilities, and issues related to their jobs. An e-mail survey was administered to the 89 Forest Service special agents, assistant special agents in charge, senior...
Published October 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
We describe the design of a domain-specific language (DSL) for the specification of generic ocean modeling tools, and we describe the
implementation of its compiler. The goal of the DSL is to allow the specification of widely usable tools for ocean modeling once, and to allow its translation into different...
Published October 1956. 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
Swiss needle cast, a foliar disease caused by the Ascomycete Phaeocryptopus gaeumannii (T. Rohde) Petr., continues to afflict Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) in north coastal Oregon. Permanent plots were installed in 1998 to assess growth impacts and monitor disease severity. Gross periodic annual increment was measured for three 2-year...
Dynamic bipedal robots, which are capable of versatile behaviour, are rare. Most bipedal robots are either versatile and static or dynamic and limited to specific gaits. Over the last twenty years the bio-inspired spring mass model became a versatile template for bipedal walking and running gaits with many studies motivated...
Published October 1979. 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
Clean, safe water for consumption, recreation, irrigation, manufacturing, and fish and wildlife habitat is important to Oregonians. Nonpoint source pollution is the major cause of water quality degradation in Oregon.
The significance of the various carbon cycling pathways in driving the sharp sulfate methane transition (SMTZ) observed at many locations on continental margins is still a topic of debate. Unraveling these processes is important to our understanding of the carbon cycle in general and to evaluate whether the location of...
Published October 1981. 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
Published October 1977. 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
This bulletin has two intended uses: 1) to report the findings of a small rural region input-output model estimated for Tillamook County, Oregon, and 2) to explain how an input-output model can be interpreted and used. The report was written with a minimum of technical jargon and mathematics to help...
During the summer of 1972 we sampled the Umpqua River estuary to determine distribution of fish populations. As a part of that study temperature and salinity data were collected monthly throughout the estuary. The environmental data should help explain the distributions of various fishes within the estuary and be useful...
The Clackamas CWPP is a consolidated reference documenting wildfire hazards, prevention and response efforts, and resource sharing information for all participating local, state and federal fire agencies. It improves upon historical fire planning efforts by providing a more localized and accurate approach for determining wildfire hazards and implementing best practices...
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Clackamas Community Wildfire Protection Plan Framework
The objectives were to bathymetrically survey areas in the Central Gulf of California where laminated sediments were discovered previously, core with lightweight marine geologic gravity corer, and recover well preserved surface sediment up to 2-3 meters in length. These laminated sediments will essentially be used to establish a model of...
African rue is a poisonous, perennial forb that readily invades salt-desert shrub and sagebrush-steppe rangelands. Information detailing options for integrated management of African rue is lacking. To date, a few studies have researched the efficacy of different herbicides for controlling African rue, but none have investigated integrated approaches to its...
Published October 1984. 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
We combine large observed data sets and dynamically downscaled climate data to explore historic and future (2050-2069) stream temperature changes over the topographically diverse Greater Yellowstone Ecosystem (elevation range=824-4017m). We link future stream temperatures with fish growth models to investigate how changing thermal regimes could influence the future distribution and...
BACKGROUND: Low levels of moderate-to-vigorous physical activity are associated with adverse health consequences.
OBJECTIVE: The intent of the study was to determine the feasibility and efficacy of a 12-week physical activity promotion program
targeting children, which was delivered to parents through mobile phones.
METHODS: Potential participants were recruited through advertisements...
Seep characteristics at different geologic settings are the subject of this review primarily based on results of the Research Consortium SFB 574. Criteria are drawn from examples on the erosive convergent margin off Costa Rica, the accretionary margin off Chile supplemented by examples from the transform margin of the Golf...
The effect of three different weed management strategies, non-weeding, hand weeding, and weed mat, were examined on physicochemical, sugar profile, and antioxidant properties of two cultivars of blackberry (Rubus spp), ’Marion’ and ’Black Diamond’ harvested at three time intervals during the 2012 season. Sensory analysis on flavor intensity of six...
Small Island Developing States (SIDS) have been amongst the most neglected group with regard to energy access until recently when several voices were raised to highlight the vulnerabilities of these small nations. Since then, their levels of energy access have become the focus of significant attention. These levels vary over...
Revised October 1990. 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
It can be difficult to talk to an older family member or friend about their driving safety or to know what to do if an unsafe driver continues to drive. If you’re older, at some point you yourself may face a decision to limit when or where you drive or...
Accurately estimating evapotranspiration (ET) at large spatial scales is essential to our understanding of land-atmosphere coupling and the surface balance of water and energy. Comparisons between remote sensing-based ET models are difficult due to diversity in model formulation, parametrization and data requirements. The constituent components of ET have been shown...
Model–data comparisons of plant physiological processes provide an understanding of mechanisms underlying vegetation responses to climate. We simulated the physiology of a pi~non pine–juniper woodland (Pinus edulis–Juniperus monosperma) that experienced mortality during a 5 yr precipitation-reduction experiment, allowing a framework with which to examine our knowledge of drought-induced tree mortality....
Published October 2001. 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
Published October 1959. 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
Published October 2001. 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
Working Paper Number RSP 0804. This report represents part of a study being conducted by the Rural Studies Program at Oregon State University that will analyze the impacts of reduced Federal land payments to counties on the services provided by county government in Oregon, and on citizens, businesses and institutions...
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List of Tables
Table 1: Ratio of Oregon County Federal Timber Payments to Property Taxes
The inter-relationships among δ¹³C and δ¹⁸O in tree ring cellulose and ring width have the potential to illuminate long-term physiological and environmental information in forest stands that have not been monitored. We examine how within-stand competition and environmental gradients affect ring widths and the stable isotopes of cellulose. We utilize...
Here we present a phylogeny of beetles (Insecta: Coleoptera) based on DNA sequence data from eight nuclear genes, including six single-copy nuclear protein-coding genes, for 367 species representing 172 of 183 extant families. Our results refine existing knowledge of relationships among major groups of beetles. Strepsiptera was confirmed as sister...
Spawning coho, chinook, and chum salmon are annually surveyed in coastal streams by Department of Fish and Wildlife personnel. Annual peak counts of spawning salmon provide data for computing an index of coastal escapement which is plotted each year to chart spawning salmon trends over a period of years. This...
The purpose of this watershed assessment is to provide an inventory and characterization of
watershed conditions in the Wilson River watershed and to provide recommendations that
address the issues of water quality, fisheries and fish habitat, and watershed hydrology.
Coastal communities in Oregon have experienced dramatic economic and demographic change during the 1980s. Although the timber and fishing sectors are still important, the economies of coastal communities now rely more on non-earned income and tourism. Non-earned income sources, such as transfer payments and investment earnings, account for over forty...
Imaging Ca²⁺ dynamics in living systems holds great
potential to advance neuroscience and cellular biology. G-GECO1.1
is an intensiometric fluorescent protein Ca²⁺-biosensor with a Thr-Tyr-Gly chromophore. The protonated chromophore emits green
upon photoexcitation via excited-state proton transfer (ESPT). Upon
Ca²⁺ binding, a significant population of the chromophores becomes
deprotonated. It...
In this paper, a three-country dynamic bio-economic model is presented and used to simulate catch levels, stock size and profit potential of alternative management strategies for the Norwegian spring-spawning herring fishery. Management of the herring fishery is complicated by the migratory behaviour of the species moving between coastal state zones...
It is often said that the reason why Community-Based Fishery Management System (CBFM) in Japan has been well practiced is due to a historical development of a fishing right system, which emerged during her feudal era. This is not always correct. Until August 1945, when Japan was defeated in the...
An integrated model combining a wildlife population simulation model and timber harvest and growth models was developed to explore the tradeoffs between the likelihood of persistence of a hypothetical wildlife species and timber harvest volumes on a landscape in the Central Oregon Cascades. Simulated annealing, a heuristic optimization technique, was...
The valuation of the opportunity to either invest or exploit a fishery is particularly difficult because of the high uncertainty concerning the resource price. The traditional net-present-value (NPV) and other discounted-cash-flows (DCF) methods cannot properly capture the management's flexibility and strategic value aspects of a fishery, thus they may understate...
The study presents a bioeconomic analysis of artificial shelter performance in a fishery targeting a spiny lobster meta-population, with spatially allocated, individual exclusive benthic property rights for shelter introduction and harvest of species. Insights into fishers’ short-run decisions and fishing strategies are also provided. Spatiotemporal bioeconomic performance of shelters located...
Hop varieties were compared under field and greenhouse conditions to determine their relative susceptibility to the twospotted spider mite, Tetranychus urticac Koch. A fertility schedule was prepared for mites on resistant and susceptible varieties, and tests were conducted to compare sex ratio, oviposition rate, survival rate, and developmental rate of...
Published June 1999. 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
The passive charge compensation (PCC) technique was introduced for switched capacitor (SC) circuit to increase the slew rate and enhance the linearity performance, as PCC techniques are used on the Delta-Sigma modulator (DSM) in ADC circuitry. The PCC technique of the project was applied to the design of a SC...
A mathematical model was developed that relates the
ratio, R, of two light flux measurements to the mass concentration,
m, of the atmospheric aerosol particles between
a source of parallel light (e.g., the sun) and the measuring
system. R is defined as the ratio of the light fluxes
passing through...
VCO-based ADCs have recently emerged as attractive alternative to conventional DeltaSigma (ΔΣ) modulator architectures. Few salient features of a VCObased ADC are: 1) the quantization noise is 1st order noise shaped, 2) it is an open loop architecture, and, 3) its implementation is mostly digital in nature. Hence, they are...
A new approach to oversampled delta-sigma A/D converters ( AZ modulators ) is introduced, where a differential pseudo-Npath filter stage is used as a basic cell. In this band-pass application, the z to -zN transformation is employed to realize a RAM-type pseudo-2-path lossless integrator. The bandpass second-order and 4th-order delta-sigma...
The authors demonstrate an efficient room temperature source of terahertz radiation using femtosecond laser pulses as a pump and GaAs structures with periodically inverted crystalline orientation, such as diffusion-bonded stacked GaAs and epitaxially grown orientation-patterned GaAs, as a nonlinear optical medium. By changing the GaAs orientation-reversal period (504–1277 μm), or...
The objective of this study is to assess the quantitative
genetic structure of fitness characters in Tribolium confusum
flour beetles. Estimates of genetic variation and covariation for a
series of fitness components (two measurements of survival,
larval weight, development time, fecundity, and female
productivity) were obtained from two populations of...