The current work sought to develop predictive
models between time-weighted average polycyclic aromatic
hydrocarbon (PAH) concentrations in the freely dissolved
phase and those present in resident aquatic organisms. We
deployed semipermeable membrane passive sampling devices
(SPMDs) and collected resident crayfish (Pacifastacus
leniusculus) at nine locations within and outside of the...
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Organisms Using Passive Samplers and Partial
Least-Squares Calibration
Norman D. Forsberg, BrianW. Smith
The current work sought to develop predictive
models between time-weighted average polycyclic aromatic
hydrocarbon (PAH) concentrations in the freely dissolved
phase and those present in resident aquatic organisms. We
deployed semipermeable membrane passive sampling devices
(SPMDs) and collected resident crayfish (Pacifastacus
leniusculus) at nine locations within and outside of the...
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Norman D. Forsberg, BrianW. Smith, Greg J. Sower, Kim A. Anderson*
Environmental and Molecular
The thesis area consists of 44 square miles in southeast Harney
County, Oregon. The Pueblo Mountains are located in the northwest
part of the Basin and Range structural province, and are characterized
by normal faults of large displacement that produced the tilted fault
block mountain range.
The oldest rocks exposed...
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, Oregon
AN ABSTRACT OF THE THESIS OF
DENNIS BRIAN TOWER for the MASTER OF SCIENCE
(Name) (Degree)
in
Contamination of resident aquatic organisms is a major concern for environmental risk assessors. However, collecting organisms to estimate risk is often prohibitively time and resource-intensive. Passive sampling accurately estimates resident organism contamination, and it saves time and resources. This study used low density polyethylene (LDPE) passive water samplers to predict...
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predict PAH levels in resident crayfish
Authors: L. Blair Paulik1, BrianW. Smith1, Alan J. Bergmann1
Contamination of resident aquatic organisms is a major concern for environmental risk assessors. However, collecting organisms to estimate risk is often prohibitively time and resource-intensive. Passive sampling accurately estimates resident organism contamination, and it saves time and resources. This study used low density polyethylene (LDPE) passive water samplers to predict...
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accurately predict PAH levels in resident crayfish
L. Blair Paulik a, BrianW. Smith a, Alan J. Bergmann a
Natural gas extraction, often referred to as “fracking,” has increased rapidly in the U.S. in recent years. To address potential health impacts, passive air samplers were deployed in a rural community heavily affected by the natural gas boom. Samplers were analyzed for 62 polycyclic aromatic hydrocarbons (PAHs). Results were grouped...
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extraction on PAH levels in ambient air
L. Blair Paulik†, Carey E. Donald†, BrianW. Smith†, Lane G
Natural gas extraction, often referred to as “fracking,” has increased rapidly in the U.S. in recent years. To address potential health impacts, passive air samplers were deployed in a rural community heavily affected by the natural gas boom. Samplers were analyzed for 62 polycyclic aromatic hydrocarbons (PAHs). Results were grouped...
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Paulik†, Carey E. Donald†, BrianW. Smith†, Lane G. Tidwell†, Kevin A. Hobbie†, Laurel
Kincl‡, Erin N
Single-scattering tomography describes a model of photon transfer through a object in which photons are assumed to scatter at most once. The Broken Ray transform arises from this model, and was first investigated by Lucia Florescu, Vadim A. Markel, and John C. Schotland, [2], in 2010, followed by an inversion,...
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AN ABSTRACT OF THE THESIS OF
Brian Sherson for the degree of
Reflux condensation tests examining steam condensation in a PWR steam
generator (SG) were conducted at the Oregon State University (OSU) Advanced
Plant Experiment (APEX) Test Facility from 2005 through 2007. The
experimental data collected will provide a basis to assess TRACE steam generator
modeling techniques and assist in development of...
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Microsoft Word - Thesis, Brian Collins.doc
AN ABSTRACT OF
Premise of research. Twenty-one permineralized fossil flowers assignable to Lauraceae from the Eocene Appian Way locality on Vancouver Island, British Columbia, Canada, provide important anatomical and morphological data for interpreting evolutionary patterns in this diverse magnoliid family. Methodology. Consecutive anatomical sections were prepared using the cellulose acetate peel technique. Morphology...
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Island: Tinaflora
beardiae gen. et sp nov (Lauraceae)
Atkinson, B. A., Stockey, R. A., Rothwell, G. W
Climate and terrestrial vegetation have had mutual feedbacks for nearly five hundred million years, yet both are now departing from recent historical norms, with uncertain implications for forest ecosystems. This dissertation outlines the current and potential future climate responses of lichen and bryophyte communities in the United States as part...
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Robert J. Smith for the degree of Doctor of Philosophy in Botany and Plant Pathology
presented on May 1
Two measured sections of the upper Silurian Douro
Formation from Devon Island, N.W.T. were examined for their
faunal content with emphasis on the paleoecology and taxonomy
of the fauna. Atrypella is believed to have lived with
its beaks embedded in the muddy substrate of a somewhat
restricted environment. Intermittent, low...
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community
AN ABSTRACT OF THE THESIS OF
ROY EDWARD SMITH for the
(Name of student)
MASTER OF SCIENCE
Neogene rocks of the Deschutes basin include the middle Miocene
Columbia River Basalt Group and Simtustus Formation, and late Miocene
to early Pliocene Deschutes Formation. Assignment of Prineville
chemical-type flows to the Grande Ronde Basalt of the Columbia River
Basalt Group is based upon correlation of these lavas from their...
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. Smith for the degree of Doctor of Philosophy in Geology
presented on ,November 19, 1985.
Title
Water mass exchange between the Arctic Ocean and the Norwegian-Greenland Seas has played an important role for the Atlantic thermohaline circulation and Northern Hemisphere climate. We reconstruct past water mass mixing and erosional inputs from the radiogenic isotope compositions of neodymium (Nd), lead (Pb), and strontium (Sr) at Ocean Drilling...
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, Brian A. Haley3, and Jochen Knies4,5
1GEOMAR, Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Undergraduate enrollment in forest resource programs has been declining for the past 10 to 15 years, with enrollment in some programs nearing critical levels. Efforts to increase enrollment include broadening program offerings, creating new majors (especially in spatial information systems), and increasing recruiting efforts. A potential recruiting approach is working...
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Increase
Interest in Forest Resources Education: An Example
From A Stand Development Study
Brian Roy
This paper reports the feasibility of using surface mount adhesives to produce low temperature microchannel arrays in a wide variety of metals. Sheet metal embossing and chemical etching processes have been used to produce sealing bosses that eliminate channel laminae, resulting in approximately 50% material savings over traditional methods. An...
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Engineering,
paulraj_prawin@yahoo.com, Oregon State University
*Corresponding Author
Paul, Brian K
Continuing education workshops and shortcourses are playing an increasingly important role in the education of forest resource professionals. The “tug-of-war” between breadth and depth in undergraduate curricula, combined with pressure to reduce the number of credit hours required for graduation, create knowledge gaps in various disciplines. Workshops and shortcourses help...
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AND SHORTCOURSES (AN UPDATE)
Brian Roy Lockhart
USDA Forest Service Southern Research Station, Center
Continuing education workshops and shortcourses are playing an increasingly important role in the education of forest resource professionals. The “tug-of-war” between breadth and depth in undergraduate curricula, combined with pressure to reduce the number of credit hours required for graduation, create knowledge gaps in various disciplines. Workshops and shortcourses help...
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(An Update)
Brian Roy Lockhart1, Andrew W. Ezell2, and John D. Hodges2
1Research Forester
U.S
BACKGROUND: The oxidative stress theory of life-history tradeoffs states that oxidative stress caused by damaging
free radicals directly underpins tradeoffs between reproduction and longevity by altering the allocation of energetic
resources between these tasks. We test this theory by characterizing the effects of exogenous oxidative insult and
its interaction with...
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Smith, S. W., Latta, L. C., Denver, D. R., & Estes, S. (2014). Endogenous ROS
levels in C. elegans
BACKGROUND: The oxidative stress theory of life-history tradeoffs states that oxidative stress caused by damaging
free radicals directly underpins tradeoffs between reproduction and longevity by altering the allocation of energetic
resources between these tasks. We test this theory by characterizing the effects of exogenous oxidative insult and
its interaction with...
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0.087 0.412 0.084 (0.026)
Lo
w
(4
3)
Total 3766 (1441) 2311 1458 94.04 17.87
Early 0.979 1905
Multibeam (1 m resolution) and side scan data collected from an autonomous underwater vehicle, and
lava samples, radiocarbon-dated sediment cores, and observations of flow contacts collected by remotely
operated vehicle were combined to reconstruct the geologic history and flow emplacement processes on
Axial Seamount’s summit and upper rift zones. The...
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Research Institute, Moss Landing, California, 95039, USA (clague@mbari.org)
Brian M. Dreyer
Institute of
Premise of research. Twenty-one permineralized fossil flowers assignable to Lauraceae from the Eocene Appian Way locality on Vancouver Island, British Columbia, Canada, provide important anatomical and morphological data for interpreting evolutionary patterns in this diverse magnoliid family. Methodology. Consecutive anatomical sections were prepared using the cellulose acetate peel technique. Morphology...
Understanding the drivers and implications of anthropogenic disturbance of ecological connectivity is a key concern for the conservation of biodiversity and 50 ecosystem processes. Here, we review human activities that affect the movements and dispersal of aquatic organisms, including damming of rivers, river regulation, habitat loss and alteration, human-assisted dispersal...
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support management and
mitigation
David A. Crook
1*
, Winsor H. Lowe
2
, Frederick W. Allendorf
2
Terrestrial lichen biomass is an important indicator of forage availability for caribou in northern regions, and can indicate
vegetation shifts due to climate change, air pollution or changes in vascular plant community structure. Techniques for
estimating lichen biomass have traditionally required destructive harvesting that is painstaking and impractical, so we...
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Comparison of Methods
Rosso A, Neitlich P, Smith RJ (2014) Non-Destructive Lichen Biomass Estimation
in
• Premise of the study: The dramatic advances offered by modern DNA sequencers continue to redefine the limits of what can be accomplished in comparative plant biology. Even with recent achievements, however, plant genomes present obstacles that can make it difficult to execute large-scale population and phylogenetic studies on next-generation...
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TARGETED ENRICHMENT STRATEGIES FOR NEXT-GENERATION
PLANT BIOLOGY 1
RICHARD CRONN 2,6 , BRIAN
We used microsatellite DNA data and genetic stock identification methods to delineate the temporal and spatial distributions of juvenile Chinook Salmon Oncorhynchus tshawytscha occupying coastal habitats extending from central Oregon to northern Washington. Juveniles were collected in trawl surveys conducted during spring, summer, and autumn over 15 years. Distributions (mean...
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, Manchester,
Washington 98353, USA
Brian J. Burke
National Oceanic and Atmospheric Administration, National
We used multi-season occupancy analyses to model 2 fates of northern spotted owl territories in
relation to habitat amount, habitat fragmentation, and the presence of barred owls in Washington State,
USA, 1989–2005. Local colonization is the probability a territory unoccupied by a spotted owl in year i would
be occupied...
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. MacDonald, D. Maulkin, L. Melampy, M. Rabanal, A.
Renkert, H. Smith, W. Smith, and H. Stabins);Washington
Electrochemical double-layer capacitors exhibit high power and long cycle life but have low specific energy compared with batteries, limiting applications. Redox-enhanced capacitors increase specific energy by using redox-active electrolytes that are oxidized at the positive electrode and reduced at the negative electrode during charging. Here we report characteristics of several...
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., Vonlanthen, D., Ji, X., Stucky, G. D., &
Boettcher, S. W. (2015). Design of aqueous redox-enhanced
Electrochemical double-layer capacitors exhibit high power and long cycle life but have low specific energy compared with batteries, limiting applications. Redox-enhanced capacitors increase specific energy by using redox-active electrolytes that are oxidized at the positive electrode and reduced at the negative electrode during charging. Here we report characteristics of several...
Water mass exchange between the Arctic Ocean and the Norwegian-Greenland Seas has played an important role for the Atlantic thermohaline circulation and Northern Hemisphere climate. We reconstruct past water mass mixing and erosional inputs from the radiogenic isotope compositions of neodymium (Nd), lead (Pb), and strontium (Sr) at Ocean Drilling...
Full Text:
exchange and erosional input at the
AtlanticArctic gateway
Claudia Teschner1,2, Martin Frank2, Brian A
The ¹⁴CO₂ composition of plant and soil respiration can be used to determine the residence time of photosynthetically fixed carbon before it is released back to the atmosphere. To estimate the residence time of actively cycled carbon in a temperate forest, we employed two approaches for estimating the Δ¹⁴CO₂ of...
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J. McFarlane2, Brian LaFranchi2,*, Ankur R. Desai3, John B. Miller4,5, Scott J.
Lehman6
1
The ¹⁴CO₂ composition of plant and soil respiration can be used to determine the residence time of photosynthetically fixed carbon before it is released back to the atmosphere. To estimate the residence time of actively cycled carbon in a temperate forest, we employed two approaches for estimating the Δ¹⁴CO₂ of...
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forest
in Northern Wisconsin
Claire L. Phillips1, Karis J. McFarlane2, Brian LaFranchi2,3, Ankur R
Microchannel heat exchangers provide large surface area to volume ratios and accelerated heat transfer, leading to compact form factors for application in portable and distributed thermal management and waste heat recovery. The application of microchannel heat exchangers in industry has been slowed by high manufacturing costs. Therefore, efforts are being...
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microchannel
device manufacturing: part 2 e Application
Qi Gao a, Jair Lizarazo-Adarme b, Brian K. Paul a
Genetic factors such as decreased genetic
diversity and increased homozygosity can have detrimental
effects on rare species, and may ultimately limit potential
adaptation and exacerbate population declines. The Gulf
and Atlantic Coastal Plain physiographic region has the
second highest level of endemism in the continental USA,
but habitat fragmentation and...
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in Astragalus michauxii (Fabaceae),
a narrow endemic of the southeastern United States
Wall, W. A
Castle Rocks is 12 miles east of Mt. Jefferson, in the central
Cascades of Oregon. The area contains volcanic rocks ranging from
mid-Miocene to Holocene in age. These rocks record alternating
periods of tholeiitic and calc-alkaline volcanism.
The oldest rocks in the area range from basaltic andesite lava
flows to...
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north end of Green Ridge, Jefferson County, Oregon
AN ABSTRACT OF THE THESIS OF
David W. Wendland
Silicic volcanism in the central Oregon Cascade range has decreased in both the size and frequency of eruptions from its initiation at ~40 Ma to present. The reasons for this reduction in silicic volcanism are poorly constrained. Studies of the petrogenesis of these magmas have the potential for addressing this...
The cereal pathogen Fusarium graminearum produces secondary metabolites toxic to humans and animals, yet coordinated
transcriptional regulation of gene clusters remains largely a mystery. By chromatin immunoprecipitation and high-throughput
DNA sequencing (ChIP-seq) we found that regions with secondary metabolite clusters are enriched for
trimethylated histone H3 lysine 27 (H3K27me3), a...
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Metabolite Gene
Clusters
Connolly LR, Smith KM, Freitag M (2013) The Fusarium graminearum Histone H3
K27
The boundary between ice and basalt on Earth is an analog for some near-surface environments of Mars. We investigated neutrophilic iron-oxidizing microorganisms from the basalt-ice interface in a lava tube from the Oregon Cascades with perennial ice. One of the isolates (Pseudomonas sp. HerB) can use ferrous iron Fe(II) from...
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-Ice Interface
in a Lava-Tube Cave, a Mars Analog Environment
Radu Popa,1 Amy R. Smith,1 Rodica Popa,1
Forest ecosystems of the Pacific Northwest of the USA are changing as a result of climate change. Specifically, rise of global temperatures, decline of winter precipitation, earlier loss of snowpack, and increased summer drought are altering the range of Pinus contorta. Simultaneously, flux in environmental conditions within the historic P....
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supplementary material,
which is available to authorized users.
* Jane E. Smith
jsmith01@fs.fed.us
1
The boundary between ice and basalt on Earth is an analog for some near-surface environments of Mars. We investigated neutrophilic iron-oxidizing microorganisms from the basalt-ice interface in a lava tube from the Oregon Cascades with perennial ice. One of the isolates (Pseudomonas sp. HerB) can use ferrous iron Fe(II) from...
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Popa, Radu
Portland State University, Biology
Smith, Amy
Portland State University, Biology
Popa
Diatoms are a ubiquitous group of plankton responsible for 20-40% of oceanic
primary production, and a higher fraction of organic matter export to the ocean
interior. Diatoms actively transport dissolved inorganic silicon into their cells, and
through the process of silicification (i.e. biogenic silica production) they build tough
and intricate...
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DISSERTATION OF
Jeffrey W. Krause for the degree of Doctor of Philosophy in Oceanography presented
on