This paper presents a theoretical study of real-time bandwidth
compression systems using the Hilbert transform and associated analytic
signal concept. An analytic signal is defined as
u(t) = s(t) + [superscript ¯]js(t) , where [superscript ¯]s(t) is the Hilbert transform of the signal
s(t). A complete discussion of the properties...
A study was made on the effect of CCC (2-chloroethyl)-trimethyl-ammonium
chloride), a plant growth retardant, on the RNA (ribonucleic
acid) content of wheat plants, It was found that the RNA content of
wheat leaves generally decreased with increasing levels of CCC up to
1x10⁻⁵M. Thereafter, the RNA content again increased...
This thesis presents a general model for the location problem
based on integer linear programming with fixed charges. The location
problem is concerned with choosing locations for facilities
throughout a particular region or area in such a way that total costs
and expenses incurred are minimized. Although the location problem...
Certain fluids exhibit an increase in flow resistance when subjected to an electric field. This electroviscous response, known as the
Winslow effect, has been the basis for development of a unique control
medium. Applying a strong potential across the fluid causes it to
"stiffen", even to the point of ceasing...
I experimentally examined the adaptive significance of the
anatomical and behavioral convergence between the harrier (Circus
cyaneus, also refered to as the marsh hawk) and certain owls that are
capable of capturing prey in total darkness. Anatomically, both the
harrier and owls have evolved a sound collecting facial ruff (a...
The Indian Ocean Experiment (INDOEX) had as a primary objective
determining the radiative forcing due to anthropogenic aerosols over
climatologically significant space and time scales: the Indian Ocean during the
winter monsoon, January-March. During the winter monsoon, polluted, low-level
air from the Asian subcontinent blows over the Arabian Sea and...
This study evaluated the effect of soil compaction on the growth
of natural regeneration on volcanic ash-influenced soils in the
southern Washington Cascades. Growth of 9 to 18 year-old sapling-.
sized Ponderosa pine (Pinus ponderosa Laws.) was studied on sites
ranging from 915 to 1006 m elevation in an area...
In the Pajaro Valley near Watsonville, California,
twospotted spider mite (Tetranychus urticae Koch)
populations were surveyed in 1983 and '84 to detect the
influence of immigrants from nursery plants or
surrounding vegetation on subsequent resistance
development to cyhexatin and formetanate in strawberry
fields. Susceptible mites (cyhexatin LC50 = 0.0039 %...
A genecological approach was used to explore genetic variation in adaptive traits in Pseudoroegneria spicata, a key restoration grass, in the intermountain western United States. Common garden experiments were established at three contrasting sites with seedlings from two maternal parents from each of 114 populations along with five commercial releases...
Soluble butane monooxygenase (sBMO), a three-component di-iron monooxygenase complex
expressed by the C2–C9 alkane-utilizing bacterium Thauera butanivorans, was kinetically
characterized by measuring substrate specificities for C1–C5 alkanes and product inhibition
profiles. sBMO has high sequence homology with soluble methane monooxygenase (sMMO) and
shares a similar substrate range, including gaseous and...
In 2014, the California Current (~28˚–48˚N) saw average, or below average, coastal upwelling and relatively low productivity in most locations, except from 38˚–43˚N during June and July. Chlorophyll-a levels were low throughout spring and summer at most locations, except in a small region around 39˚N. Catches of juvenile rockfish (an...
A classification of forest vegetation is presented for the Colville National Forest in northeastern
Washington State. It is based on potential vegetation with the plant association as the basic unit. The
classification is based on a sample of approximately 229 intensive plots and 282 reconnaisance plots
distributed across the forest...
The state of the California Current System (CCS)
since spring 2011 has evolved in response to dissipation
of La Niña through spring and summer, resurgence of
cooler La Niña conditions in fall and winter, and finally
a transition towards ENSO-neutral conditions in spring
2012. The resurgence of La Niña was...
Context: Static stretching is commonly used during the treatment and rehabilitation of orthopedic injuries to increase joint range of motion (ROM) and muscle flexibility. Understanding the physiological adaptations that occur in the neuromuscular system as a result of long-term stretching may provide insight into the mechanisms responsible for changes in...
In 2013, the California current was dominated by
strong coastal upwelling and high productivity. Indices
of total cumulative upwelling for particular coastal
locations reached some of the highest values on record.
Chlorophyll a levels were high throughout spring and
summer. Catches of upwelling-related fish species were
also high. After a...
This report reviews the state of the California Current System (CCS) between winter 2012 and spring 2013, and includes observations from Washington State to Baja California. During 2012, large-scale climate modes indicated the CCS remained in a cool, productive phase present since 2007. The upwelling season was delayed north of...
Full Text:
Jolla Shores Drive
La Jolla, CA 92037-1508
WILLIAM T. PETERSON,
RICHARD D. BRODEUR
Northwest
This report reviews the state of the California Current System (CCS) between winter 2012 and spring 2013, and includes observations from Washington State to Baja California. During 2012, large-scale climate modes indicated the CCS remained in a cool, productive phase present since 2007. The upwelling season was delayed north of...
Full Text:
. Gaxiola-Castro, B. Lavaniegos, F. Chavez, C. A. Collins, J. Field,
K. Sakuma, P. Warzybok, R. Bradley, J
This report reviews the state of the California Current System (CCS) between winter 2012 and spring 2013, and includes observations from Washington State to Baja California. During 2012, large-scale climate modes indicated the CCS remained in a cool, productive phase present since 2007. The upwelling season was delayed north of...
Alien grass invasions in arid and semi-arid ecosystems are resulting in grass–fire cycles and ecosystem-level transformations that severely diminish ecosystem services. Our capacity to address the rapid and complex changes occurring in these ecosystems can be enhanced by developing an understanding of the environmental factors and ecosystem attributes that determine...
Bathymetry and magnetic anomalies indicate that a seamount on the Juan de Fuca plate has been subducted beneath the central Cascadia accretionary complex and is now located similar to 45 km landward of the deformation front. Passage of this seamount through the accretionary complex has resulted in a pattern of...
Published January 1973. A more recent revision exists. 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
In recent years, payments to purchase resources or easements or to change landowner behavior have become a major vehicle for resource conservation and environmental protection. These funds use various strategies to target resources for conservation, the choice of which may lead to striking differences in economic and environmental performance. In...
CTD observations of temperature and salinity were made off the coast of Peru between 5°S and 16°S from the R/V MELVILLE, 4 March - 22 May 1977, and the R/V ISELIN, 5 April - 19 May 1977. These observations were made as part of MAM 77, the final phase of...
CTD observations were made in the Code region near Pt. Arena on
the northern California coast at 39°N, off Five Mile Point at 43°13'N,
off Crescent City at 41°54'N, and off Half Moon Bay at 370 25'N,
during 17-29 May 1981. The observations in the Code region included
six repeated...
CTD observations of temperature and salinity were made
off the coast of Peru between 12°S and 16°S from the
R/V EASTWARD, between 23 July and 16 August 1976. The
observations were made during Legs 0, 1, and 2 of JASON,
which was the middle phase of the JOINT-II project conducted...
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...
CTD observations of temperature and salinity were made off Oregon and California between 34° N and 44° N from the R/V Wecoma, 5 Feb. - 17 Feb. 1981. The stations were from 2-360 km off shore, in water depths ranging from 30 to 4,300 meters. The maximum sampling depth at...
Salinity, temperature, oxygen, phosphate, and nitrate observations were taken by Oregon State University of 15 hydrographic cruises in the Northeastern Pacific and one cruise in the Sea of Cortez during 1970. Alkalinity, pH and silicate were taken on special occasions.
Data were collected by Oregon State University personnel aboard the...
The authors varied the number of red alder retained with 300 Douglas-fir per acre on a high-quality site in coastal Oregon. Alder densities of 0, 20, 40, and 80 per acre were tested. The authors' fifth treatment eliminated nitrogen-fixing alder, but substantial nitrogen fertilizer. Treatment 6 had neither thinning nor...
The cause of warming in the Southern Hemisphere during the most recent deglaciation remains a matter of debate[superscript 1,2]. Hypotheses for a Northern Hemisphere trigger, through oceanic redistributions of heat, are based in part on the abrupt onset of warming seen in East Antarctic ice cores and dated to 18,000...
Shotgun metagenomic DNA sequencing is a widely applicable tool for characterizing the functions that are encoded by microbial communities. Several bioinformatic tools can be used to functionally annotate metagenomes, allowing researchers to draw inferences about the functional potential of the community and to identify putative functional biomarkers. However, little is...
Assessing the ecological importance of clouds has substantial implications for our basic understanding of ecosystems
and for predicting how they will respond to a changing climate. This study was conducted in a coastal Bishop pine
forest ecosystem that experiences regular cycles of stratus cloud cover and inundation in summer. Our...
Rockfishes, Sebastes spp.. were the most numerous and speciose fishes seen during 16 submersible dives from 64 to 305 m depth in the vicinity of Heceta Bank off the coast of Oregon. Dense schools of juvenile rockfishes and large yellowtail rockfish, S. flavidus, were observed only over rocky, high relief...