Three key tectonic domains of western North America, the Walker Lane Fault Zone (WLFZ), northwestern Basin and Range (NWBR), and Cascade arc, intersect in south-central Oregon. Bounded by Cascade arc volcanoes in the west, the Klamath Graben is traditionally regarded as the western-most extent of the Basin and Range extensional...
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, and Atmospheric Sciences, Oregon State University
Trevor Waldien, AndrewMeigs
Shear development and
Three key tectonic domains of western North America, the Walker Lane Fault Zone (WLFZ), northwestern Basin and Range (NWBR), and Cascade arc, intersect in south-central Oregon. Bounded by Cascade arc volcanoes in the west, the Klamath Graben is traditionally regarded as the western-most extent of the Basin and Range extensional...
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Trevor Waldien, AndrewMeigs
Shear development and overprinting in a back-arc basin,
Klamath Falls
Chitosan based hemorrhage control dressings provide effective external hemorrhage control while having few side effects. Known residual contaminants present in chitosan formulations include endotoxins and proteins known to stimulate gene expression in the liver. This study investigated gene expression in the liver using rat bio-compatibility models to gain knowledge regarding...
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Based Hemostatic Control Patch in Rat Models
By
AndrewJ. Colburn
A thesis submitted to
Oregon
Chitosan based hemorrhage control dressings provide effective external hemorrhage control while having few side effects. Known residual contaminants present in chitosan formulations include endotoxins and proteins known to stimulate gene expression in the liver. This study investigated gene expression in the liver using rat bio-compatibility models to gain knowledge regarding...
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Subcutaneous Chitosan Patch Formulations
Andrew Colburn1, Leslie Dyal, Ph.D.2 and John Mata Ph.D.2
Oregon
Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
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Biosynthesis
Andrew Osborn
Research Mentors: Dr. Taifo Mahmud, Dr. Kerry McPhail
A Bioresource
Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
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By
Andrew Osborn
An Undergraduate Thesis Submitted to
Oregon State University
When characterizing the processes that shape ecosystems, ecologists increasingly use the unique perspective
offered by repeat observations of remotely sensed imagery. However, the concept of change embodied in much of
the traditional remote-sensing literature was primarily limited to capturing large or extreme changes occurring
in natural systems, omitting many more...
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-
breaks have variable temporal signatures ranging from
abrupt to multi-decadal (Goodwin et al. 2010; Meigs
Understanding the causes and consequences of rapid environmental change is an essential scientific frontier, particularly given the threat of climate-and land use-induced changes in disturbance regimes. In western North America, recent widespread insect outbreaks and wildfires have sparked acute concerns about potential insect-fire interactions. Although previous research shows that insect...
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, CanadaCan. J. For. Res. 38
3112–9
Meigs GW,Campbell J L, ZaldH S J, Bailey J D, ShawDC and
Kennedy RE
Understanding the causes and consequences of rapid environmental change is an essential scientific frontier, particularly given the threat of climate-and land use-induced changes in disturbance regimes. In western North America, recent widespread insect outbreaks and wildfires have sparked acute concerns about potential insect-fire interactions. Although previous research shows that insect...
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reduce the severity of subsequent forest fires?
Garrett W Meigs*, Harold S J Zald, John L
The National Forest System (NFS) of the United States plays an important role in the carbon cycle because
these lands make up a large proportion of the forested land in the country and commonly store more wood
per unit area than other forest ownerships. In addition to sustaining natural resources,...
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.: +1 541 750 7252; fax: +1 541 758 7742.
E-mail address: agray01@fs.fed.us (A.N. Gray).
Andrew N. Gray
Endophytes are bacteria or fungi that live within a host plant. The plant host provides a home for endophytes, and in return endophytes produce primary and secondary metabolites, of which many of the secondary metabolites possess biological activities. When microorganisms are grown under various media conditions, they produce different natural...
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Endophytes.ppt
Chemical
Screen
and
Antibacterial
Testing
of
Fungal
Endophytes
Andrew
The Horseshoe Gulch area includes 16 square miles in the
Eastern Paleozoic Belt of the Klamath Mountains geologic province
north of Callahan, California. Fossiliferous Late Ordovician and
Silurian limestones and unfossiliferous greywackes, arkoses, shales,
mudstones, schists, and phyllites, and other terrigenous clastic
rocks are exposed in a broad fault zone...
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, Etna and China mountain quadrangles, California
in
AN ABSTRACT OF THE THESIS OF
TED ANDREW
Alcoves in some river systems are cooler than the mainstem of the river and
provide thermal refugia for aquatic species. An energy balance and sensitivity analysis on 3 alcoves in the Willamette River, Oregon indicate that alcove size and alcove flux determine the degree to which meteorological conditions affect the...
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Andrew G. Bryenton for the degree of Master of Science in Chemical Engineering
presented on November 20
Endophytes are bacteria or fungi that live within a host plant. The plant host provides a home for endophytes, and in return endophytes produce primary and secondary metabolites, of which many of the secondary metabolites possess biological activities. When microorganisms are grown under various media conditions, they produce different natural...
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Endophytes
Andrew Pham | Dr. Sandra Loesgen | Department of Chemistry
Good evening.
Thank you for being
Obtaining accurate estimates of animal abundance is made difficult by the fact that most
animal species are detected imperfectly. Early attempts at building likelihood models that
account for unknown detection probability impose a simplifying assumption unrealistic for
many populations, however: no births, deaths, migration or emigration can occur in the...
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J. Madsen
Obtaining accurate estimates of animal abundance is made difficult by the fact that most
Tumours arising from the dorsal surface of the tongue occurred in 3 horses from 14-23 years of age. Tumours were surgically excised at a referral hospital (1 case) and on the farm (2 cases) and submitted for histopathology. All tumours were multilobular and composed of vaguely nested, bland, oval to...
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2
Beth A. Valentine
*
, Robert J. Bildfell, AndrewJ. Dunn
†
3
4
Department of Biomedical
Tumours arising from the dorsal surface of the tongue occurred in 3 horses from 14-23 years of age. Tumours were surgically excised at a referral hospital (1 case) and on the farm (2 cases) and submitted for histopathology. All tumours were multilobular and composed of vaguely nested, bland, oval to...
Tumours arising from the dorsal surface of the tongue occurred in 3 horses from 14-23 years of age. Tumours were surgically excised at a referral hospital (1 case) and on the farm (2 cases) and submitted for histopathology. All tumours were multilobular and composed of vaguely nested, bland, oval to...
Tumours arising from the dorsal surface of the tongue occurred in 3 horses from 14-23 years of age. Tumours were surgically excised at a referral hospital (1 case) and on the farm (2 cases) and submitted for histopathology. All tumours were multilobular and composed of vaguely nested, bland, oval to...
Tumours arising from the dorsal surface of the tongue occurred in 3 horses from 14-23 years of age. Tumours were surgically excised at a referral hospital (1 case) and on the farm (2 cases) and submitted for histopathology. All tumours were multilobular and composed of vaguely nested, bland, oval to...
We tested closure between in situ radiometric and absorption coefficient measurements by using a nearly backscattering-independent remote-sensing reflectance model that employs the remote-sensing reflectance at three wavelengths. We show that only a small error is introduced into the closure model when the proper functional relationships of f/Q and the backscattering...
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sensed
reflectance and the absorption coefficient:
closure and inversion—errata
Andrew H. Barnard, J
We tested closure between in situ radiometric and absorption coefficient measurements by using a nearly backscattering-independent remote-sensing reflectance model that employs the remote-sensing reflectance at three wavelengths. We show that only a small error is introduced into the closure model when the proper functional relationships of f/Q and the backscattering...
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sensed
reflectance and the absorption coefficient:
closure and inversion
Andrew H. Barnard, J. Ronald V
We tested closure between in situ radiometric and absorption coefficient measurements by using a nearly backscattering-independent remote-sensing reflectance model that employs the remote-sensing reflectance at three wavelengths. We show that only a small error is introduced into the closure model when the proper functional relationships of f/Q and the backscattering...
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sensed
reflectance and the absorption coefficient:
closure and inversion
Andrew H. Barnard, J. Ronald V
The Tobin Range of central Nevada lies in the Basin and Range extensional
province near the transition between more extended terrane (>50%) to the south and
east, and generally less extended terrane to the north and west. Geologic mapping,
40Ar/39Ar dating and whole-rock geochemical analysis were employed to establish the...
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would like to thank my advisor, John Dilles, as well as my other committee
members, AndrewMeigs and
Decision-making competence reflects individual differences in the susceptibility to committing decision-making errors, measured using tasks common from behavioral decision research (e.g., framing effects, under/overconfidence, following decision rules). Prior research demonstrates that those with higher decision-making competence report lower incidence of health-risking and antisocial behaviors, but there has been less focus...
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risk taking: an examination
of concurrent validity
Parker, A. M., & Weller, J. A. (2015). Greater
Dynein light chain LC8 is a small, dimeric, and very highly conserved globular protein that is an integral part of the dynein and myosin molecular motors but appears to have a broader role in multiple protein complexes unrelated to molecular motors. LC8 binds to two families of targets: those having...
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the Diverse Interactions of Dynein
Light Chain LC8
Gregory Benison, P. Andrew Karplus and Elisar
Epidermal RNA samples from FVB/N mice treated with PAH standards and
environmental PAH mixtures were harvested and purified using Trizol extraction and
RNeasy mini prep kit purification. Epidermal RNA integrity was low (RIN mean 3.5),
indicating significant RNA degradation and the need to modify handling, collection, and
processing of skin...
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Application Note, Publication, 1–8.
Rodgman, A., Smith, C. J., and Perfetti, T. A. (2000). The composition of
Epidermal RNA samples from FVB/N mice treated with PAH standards and
environmental PAH mixtures were harvested and purified using Trizol extraction and
RNeasy mini prep kit purification. Epidermal RNA integrity was low (RIN mean 3.5),
indicating significant RNA degradation and the need to modify handling, collection, and
processing of skin...
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with environmental PAH mixtures
Andrew Larkina,b, Lisbeth K. Siddensb, Sharon K. Kruegerc, David E
Oregon’s High Lava Plains Province (HLP) has strongly bimodal basalt and rhyolitic volcanism. The Province caps the northern margin of the Basin and Range Province and serves as a transitional region between westward extension of the Basin and Range Province and unextended crust to the north . The High Lava...
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shape my ideas about the High Lava Plains. Anita
Grunder, AndrewMeigs, Adam Kent, Kaleb Scarberry
Wildlife epidemiological outcomes can depend strongly on the composition of an ecological community, particularly when multiple host species are affected by the same pathogen. However, the relationship between host species richness and disease risk can vary with community context and with the degree of spillover transmission that occurs among co-occurring...
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infection severity among
amphibians in the absence of spillover transmission
Han, B. A., Kerby, J. L
Sedoheptulose 7-phosphate cyclases (SH7PCs) encompass three enzymes involved in producing the core cyclitol structures of pseudoglycosides and similar bioactive natural products. One such enzyme is ValA from Streptomyces hygroscopicus subsp. jinggangensis 5008 which makes 2-epi-5-epi-valiolone as part of the biosynthesis of the agricultural antifungal agent validamycin A. We present, as...
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-Phosphate Cyclase: ValA from Streptomyces
hygroscopicus
Kelsey M. Kean1, Sara J. Codding1, Shumpei
Nitrosomonas europaea is a chemolithoautotrophic bacterium that oxidizes ammonia (NH₃) to obtain energy for growth on carbon dioxide (CO₂) and can also produce nitrous oxide (N₂O), a greenhouse gas. We interrogated the growth, physiological, and transcriptome responses of N. europaea to conditions of replete (>5.2 mM) and limited inorganic carbon...
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Maintenance and Enhances Nitrous Oxide Production in
Nitrosomonas europaea.
Brett L. Mellbyea#, Andrew
Sedoheptulose 7-phosphate cyclases (SH7PCs) encompass three enzymes involved in producing the core cyclitol structures of pseudoglycosides and similar bioactive natural products. One such enzyme is ValA from Streptomyces hygroscopicus subsp. jinggangensis 5008 which makes 2-epi-5-epi-valiolone as part of the biosynthesis of the agricultural antifungal agent validamycin A. We present, as...
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).
Kelsey M. Kean1, Sara J. Codding1, Shumpei Asamizu2, Taifo Mahmud2, and P. Andrew
Karplus1,*
1
Nitrosomonas europaea is a chemolithoautotrophic bacterium that oxidizes ammonia (NH₃) to obtain energy for growth on carbon dioxide (CO₂) and can also produce nitrous oxide (N₂O), a greenhouse gas. We interrogated the growth, physiological, and transcriptome responses of N. europaea to conditions of replete (>5.2 mM) and limited inorganic carbon...
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Andrew Giguere,b Frank Chaplen,c Peter J. Bottomley,b,d Luis A. Sayavedra-Sotoa
Department of Botany and
Nitrosomonas europaea is a chemolithoautotrophic bacterium that oxidizes ammonia (NH₃) to obtain energy for growth on carbon dioxide (CO₂) and can also produce nitrous oxide (N₂O), a greenhouse gas. We interrogated the growth, physiological, and transcriptome responses of N. europaea to conditions of replete (>5.2 mM) and limited inorganic carbon...
Abstract
Understanding the effects of climate change on forest ecosystems requires exploration of the relationships of different components of the system, such as the response of biota to local hydrology, temperature, precipitation, and elevation. The Long-term Ecological Research Program at the H. J. Andrews Experimental Forest, located in the Western...
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invertebrate abundance at H. J. Andrews
Experimental Forest, Oregon
By:
Kailan F. Mackereth
An
Abstract
Understanding the effects of climate change on forest ecosystems requires exploration of the relationships of different components of the system, such as the response of biota to local hydrology, temperature, precipitation, and elevation. The Long-term Ecological Research Program at the H. J. Andrews Experimental Forest, located in the Western...
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abundance by temperature zone in H. J. Andrews Experimental Forest, OR
A phenological examination of
The objectives of this study were to determine the extent of absorption of functionalized
single-wall carbon nanotubes (SWCNTs) across the gut epithelial cells in Daphnia magna.
Several microscopic techniques were utilized, including micro-Raman spectroscopy, high-resolution
transmission electron microscopy (HRTEM) and selective area diffraction (SAD). In an
effort to examine the...
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-wall carbon nanotube uptake by
Daphnia magna
Aaron James Edgington1, Elijah J. Petersen2, Andrew A
The atmospheric flux of methane from the oceans is largely mitigated through microbially
mediated sulphate-coupled methane oxidation, resulting in the precipitation of authigenic
carbonates. Deep-sea carbonates are common around active and palaeo-methane seepage,
and have primarily been viewed as passive recorders of methane oxidation; their role as active
and unique...
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the deep sea
Jeffrey J. Marlow1, Joshua A. Steele1, Wiebke Ziebis2, Andrew R. Thurber3, Lisa A. Levin4
The objectives of this study were to determine the extent of absorption of functionalized
single-wall carbon nanotubes (SWCNTs) across the gut epithelial cells in Daphnia magna.
Several microscopic techniques were utilized, including micro-Raman spectroscopy, high-resolution
transmission electron microscopy (HRTEM) and selective area diffraction (SAD). In an
effort to examine the...
The atmospheric flux of methane from the oceans is largely mitigated through microbially
mediated sulphate-coupled methane oxidation, resulting in the precipitation of authigenic
carbonates. Deep-sea carbonates are common around active and palaeo-methane seepage,
and have primarily been viewed as passive recorders of methane oxidation; their role as active
and unique...
Background: Theobroma cacao L., the source of cocoa, is a crop of significant economic value around the world. To facilitate the study of gene function in cacao we have developed a rapid Agrobacterium-mediated transient genetic transformation protocol. Here we present a detailed methodology for our transformation assay, as well as...
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for functional genomics in the tropical tree
Theobroma cacao L.
Andrew S. Fister1, Zi Shi2, Yufan
Zooplankton fecal pellet flux is a highly variable component of the biological carbon pump. While fecal pellets can comprise 0 to nearly 100% of particulate organic carbon collected in sediment traps, mechanisms for this variability remain poorly understood. Fecal pellet carbon flux is a complex function of several variables. We...
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AndrewJ. Pershing,2 Nicholas R. Record,3 Cynthia H. Pilskaln,4 Hans G. Dam,5
Leah R. Feinberg6
1School
Understanding the genetic basis of pathogen susceptibility in various crop plants is crucial to increasing the stability of food, feed, and fuel production. Varietal differences in defence responses provide insights into the mechanisms of resistance and are a key resource for plant breeders. To explore the role of salicylic acid...
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treatment
Andrew S. Fister1, Shawn T. O’Neil2, Zi Shi3, Yufan Zhang1, Brett M. Tyler2,4, Mark J
BACKGROUND: As it becomes increasingly possible to obtain DNA sequences of orthologous genes from diverse sets
of taxa, species trees are frequently being inferred from multilocus data. However, the behavior of many methods for
performing this inference has remained largely unexplored. Some methods have been proven to be consistent given...
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multilocus
dataset from North American pines
Michael DeGiorgio1*, John Syring2, AndrewJ Eckert3,4, Aaron
Zooplankton fecal pellet flux is a highly variable component of the biological carbon pump. While fecal pellets can comprise 0 to nearly 100% of particulate organic carbon collected in sediment traps, mechanisms for this variability remain poorly understood. Fecal pellet carbon flux is a complex function of several variables. We...
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across and along the Gulf
Stream. J. Plankton Res. 15: 67-98, doi: 10.1093/plankt/15.1.67 §
Ayukai, T
Understanding the genetic basis of pathogen susceptibility in various crop plants is crucial to increasing the stability of food, feed, and fuel production. Varietal differences in defence responses provide insights into the mechanisms of resistance and are a key resource for plant breeders. To explore the role of salicylic acid...
Background: Theobroma cacao L., the source of cocoa, is a crop of significant economic value around the world. To facilitate the study of gene function in cacao we have developed a rapid Agrobacterium-mediated transient genetic transformation protocol. Here we present a detailed methodology for our transformation assay, as well as...
BACKGROUND: As it becomes increasingly possible to obtain DNA sequences of orthologous genes from diverse sets
of taxa, species trees are frequently being inferred from multilocus data. However, the behavior of many methods for
performing this inference has remained largely unexplored. Some methods have been proven to be consistent given...
Zooplankton fecal pellet flux is a highly variable component of the biological carbon pump. While fecal pellets can comprise 0 to nearly 100% of particulate organic carbon collected in sediment traps, mechanisms for this variability remain poorly understood. Fecal pellet carbon flux is a complex function of several variables. We...