Index Catalog // ScholarsArchive@OSU

Nanoscale Patterning of Extracellular Matrix Alters Endothelial Function under Shear Stress

Creator:: Nakayama, Karina H., Surya, Vinay N., Gole, Monica, Walker, Travis W., Yang, Weiguang, Lai, Edwina S., Ostrowski, Maggie A., Fuller, Gerald G., Dunn, Alexander R., and Huang, Ngan F.
Abstract:: The role of nanotopographical extracellular matrix (ECM) cues in vascular endothelial cell (EC) organization and function is not well-understood, despite the composition of nano- to microscale fibrillar ECMs within blood vessels. Instead, the predominant modulator of EC organization and function is traditionally thought to be hemodynamic shear stress, in which...
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Full Text:: matrix (ECM) cues in vascular endothelial cell (EC) organization and function is not well-understood

Antioxidant activity of fractions from Quercus sideroxyla bark and identifi cation of proanthocyanidins by HPLC-DAD and HPLC-MS

Creator:: Rosales-Castro, Martha, Gonzalez-Laredo, Ruben Francisco, Rocha-Guzman, Nuria Elizabeth, Gallegos-Infante, Jose Alberto, Rivas-Arreola, Maria Jose, and Karchesy, Joseph J.
Abstract:: The most active phenolics in Quercus sideroxyla Humb. & Bonpl. residual bark were identified and evaluated following a chromatographic fractionation. Bark powder was defatted with hexane and crude extract (CE) was obtained by extraction with aqueous acetone (70%). A liquid partition with ethyl acetate was performed to produce an organic...
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Full Text:: ) assays. Their median effective concentration (EC 50 ) data and rate constants for DPPH radical

Composition and major sources of organic compounds of aerosol particulate matter sampled during the ACE-Asia campaign

Creator:: Simoneit, Bernd R. T., Kobayashi, Minoru, Mochida, Michihiro, Kawamura, Kimitaka, Lee, Meehye, Lim, Ho-Jin, Turpin, Barbara J., and Komazaki, Yuichi
Abstract:: The organic compound tracers of atmospheric particulate matter, as well as organic carbon (OC) and elemental carbon (EC), have been characterized for samples acquired during the Asian Pacific Regional Aerosol Characterization Experiment (ACE-Asia) from Gosan, Jeju Island, Korea, from Sapporo, Japan, and from Chichi-jima Island in the western North Pacific,...
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Full Text:: organic carbon (OC) and elemental carbon (EC), have been characterized for samples acquired during the

A Deep Learning and Image Processing Pipeline for Object Characterization in Firm Operations

Creator:: Aghasi, Allreza, Ral, Arun, and Xla, Yusen
Abstract:: Given the abundance of images related to operations that are being captured and stored, it behooves firms to innovate systems using image processing to improve operational performance that refers to any activity that can save labor cost. In this paper, we use deep learning techniques, combined with classic image/signal processing...
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Full Text:: convolutional neural networks. Section EC.1 of the e-companion provides a concise over- view of this material

Bipolar piezoelectric fatigue of Bi(Zn0.5Ti0.5)O3-(Bi0.5K0.5)TiO3-(Bi0.5Na0.5)TiO3 Pb-free ceramics

Creator:: Patterson, Eric A. and Cann, David P.
Abstract:: The piezoelectric fatigue behavior of Pb-free ceramics based on solid solutions of Bi(Zn₀.₅Ti₀.₅)O₃-(Bi₀.5K₀.₅)TiO₃-(Bi₀.₅Na₀.₅)TiO₃ was characterized at 50 kV/cm after 10⁶ bipolar cycles. Ferroelectric compositions containing 2.5% Bi(Zn₀.₅Ti₀.₅)O₃ exhibited only minor losses in maximum strain (~10%). In compositions with 5% Bi(Zn₀.₅Ti₀.₅)O₃ that exhibit large electric field-induced strains, the electromechanical strain actually...
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Full Text:: 47.4% of the initial value and EC began to increase.28 However, for most Pb-free ceramics, very little

Data report : spectral reflectance observations from recovered sediments

Creator:: Ortiz, Joseph D., O'Connell, Suzanne, and Mix, Alan C.
Abstract:: Sediment spectral reflectance measurements were generated aboard the JOIDES Resolution during Ocean Drilling Program Leg 162 shipboard operations. The large size of the raw data set (over 1.3 gigabytes) and limited computer hard disk storage space precluded detailed analysis of the data at sea, although broad band averages were used...
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Full Text:: reflectance was averaged into four 50-nm-wide bands defined as UV (250–300 nm), blue (450–5 nm), red (650–700

Evaluation and improvement of the Community Land Model (CLM4) in Oregon forests

Creator:: Hudiburg, T. W., Law, B. E., and Thornton, P. E.
Abstract:: Ecosystem process models are important tools for determining the interactive effects of global change and disturbance on forest carbon dynamics. Here we evaluated and improved terrestrial carbon cycling simulated by the Community Land Model (CLM4), the land model portion of the Community Earth System Model (CESM1.0.4). Our analysis was conducted...
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Full Text:: ecoregions (BM = Blue Mountains, CR = Coast Range, CP = Columbia Plateau, EC = East Cascades, KM = Klamath

Electromechanical strain in Bi(Zn1/2Ti1/2)O3–(Bi1/2Na1/2)TiO3–(Bi1/2K1/2)TiO3 solid solutions

Creator:: Patterson, Eric A., Cann, David P., Pokorny, Jan, and Reaney, Ian M.
Abstract:: Solid solutions ceramics of the Bi(Zn0.5Ti0.5)O-3-(Bi0.5K0.5)TiO3-(Bi0.5Na0.5)TiO3 ternary system for <20 mol. % BZT were created and confirmed to be single phase using x-ray diffraction. The dielectric dispersion showed decreasing T-max of the dielectric spectrum with a broadening of the transition with increasing BZT content. At 2.5BZT-40BKT-57.5BNT, a secondary transition commonly...
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Full Text:: only be achieved at very high applied fields due to its extremely large coercive field, Ec ¼ 73–75 kV

p-type conductivity in wide-band-gap BaCuQF (Q=S,Se)

Creator:: Yanagi, Hiroshi, Tate, Janet, Park, Sangmoon, Park, Cheol-Hee, and Keszler, Douglas A.
Abstract:: BaCuQF (Q=S,Se) materials, candidate transparent p-type conductors, were prepared by solid-state reaction, and their bulk electrical and optical properties were evaluated. The room-temperature Seebeck coefficient and electrical conductivity of undoped BaCuQF pellets were +56 μV/K and 0.088 S/cm, respectively, for the sulfide fluoride, and +32 μV/K and 0.061 S/cm, respectively,...
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Full Text:: 2010 to 128.193.163.2. Redistribution subject to ec- rs a . A al n s ri- F e, d d ed - . e band

Inter-laboratory Validation of Bioaccessibility Testing for Metals

Creator:: Henderson, Rayetta G., Verougstraete, Violaine, Anderson, Kim, Arbildua, José J., Brock, Thomas O., Brouwers, Tony, Cappellini, Danielle, Delbeke, Katrien, Herting, Gunilla, Hixon, Greg, Odnevall Wallinder, Inger, Rodriguez, Patricio H., Van Assche, Frank, Wilrich, Peter, and Oller, Adriana R.
Abstract:: Bioelution assays are fast, simple alternatives to in vivo testing. In this study, the intra- and inter-laboratory variability in bioaccessibility data generated by bioelution tests were evaluated in synthetic fluids relevant to oral, inhalation, and dermal exposure. Using one defined protocol, five laboratories measured metal release from cobalt oxide, cobalt...
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Full Text:: (REACH) Regulation in 6 Europe (EU) (Regulation (EC) No 1907/2006, 2006) necessitates the generation of

Thinning effects on forest productivity: Consequences of preserving old forests and mitigating impacts of fire and drought

Creator:: Law, Beverly E., Hudiburg, Tara W., and Luyssaert, Sebastiaan
Abstract:: Background: Management strategies have been proposed to minimise the effects of climate change on forest resilience. Aims: We investigated the Pacific Northwest US region forest carbon balance under current practices, and changes that may result from management practices proposed for the region’s 34 million ha of forests to mitigate climate...
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Full Text:: mesic young, and thinning all dry forests (< 650 mm annual 84 precipitation) to reduce fire and

Importance of environmental factors for the richness and distribution of benthic macroinvertebrates in tropical headwater streams

Creator:: Ferreira, Wander R., Ligeiro, Raphael, Macedo, Diego R., Hughes, Robert M., Kaufmann, Philip R., Oliveira, Leando G., and Callisto, Marcos
Abstract:: An understanding of the interactions among local environmental factors (e.g., physical habitat and water quality) and aquatic assemblages is essential to conserve biodiversity in tropical and subtropical headwater streams. We evaluated the relative importance of multiple physical and chemical habitat variables that influence the richness of Ephemeroptera, Plecoptera, and Trichoptera...
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Full Text:: ) in situ between 0900 and 1000 h using a multiparameter probe (650 MDS probe 6920; Yellow Springs

An unexpected clade of South American ground beetles (Coleoptera, Carabidae, Bembidion)

Creator:: Maddison, David R.
Abstract:: Phylogenetic relationships of the Antiperyphanes Complex of the genus Bembidion are inferred using DNA sequences from seven genes (two nuclear ribosomal, four nuclear protein coding, and one mitochondrial protein coding). Redefined subgenera within the complex are each well-supported as monophyletic. Most striking was the discovery that a small set of...
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Full Text:: . Maddison / ZooKeys 416: 113–155 (2014)118 T ab le 1 . S am pl in g of B em bi di on sp ec ie

Aerosol particles collected on aircraft flights over the northwestern Pacific region during the ACE-Asia campaign: Composition and major sources of the organic compounds

Creator:: Simoneit, Bernd R. T., Kobayashi, Minoru, Mochida, Michihiro, Kawamura, Kimitaka, and Huebert, Barry J.
Abstract:: Atmospheric particulate matter, collected over the polluted east Asia/Pacific region in spring 2001 during research flights with the National Center for Atmospheric Research (NCAR) C-130 aircraft, was analyzed for different types of organic compounds using capillary gas chromatography–mass spectrometry. More than 70 organic species were detected in the aerosols and...
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Full Text:: analyzed for organic carbon (OC) and elemental carbon (EC) by a Sunset Lab’s thermal/optical analyzer

Evolution and Phylogeny of Gnetophytes: Evidence From the Anatomically Preserved Seed Cone Protoephedrites Eamesii gen. et sp nov. and the Seeds of Several Bennettitalean Species

Creator:: Rothwell, Gar W. and Stockey, Ruth A.
Abstract:: A fossil seed cone with characters that have been hypothesized as transitional to the origin of crown group gnetophytes has been discovered in Lower Cretaceous deposits on Vancouver Island, British Columbia, Canada. This cone, described as Protoephedrites eamesii gen. et sp. nov., provides the first anatomically preserved fossil evidence for...
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Full Text:: p h yt e G en er a S p ec ie s C o n e si ze a N o . n o d es o n a x is B ra ct a rr

Dielectric and ferroelectric properties of (Bi₀.₅Na₀.₅)TiO₃ – (Bi₀.₅K₀.₅)TiO₃ – BaTiO₃ thin films deposited via chemical solution deposition

Creator:: Jeon, Yu Hong, Patterson, Eric A., Cann, David P., and Gibbons, Brady J.
Abstract:: Polycrystalline ferroelectric lead-free 85 mol% (Bi₀.₅Na₀.₅)TiO₃–10 mol% (Bi₀.₅K₀.₅)TiO₃–5 mol% BaTiO₃ (85BNT–10BKT–5BT) thin films were fabricated via chemical solution deposition on platinized silicon substrates. The permittivity and dielectric loss at 1 kHz were 610 and ∼3.5%, respectively. The ferroelectric properties at room temperature and as a function of the temperature up...
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Full Text:: the large 17 coercive field, Ec (=73 kV/cm).[9] To improve the

Extremely efficient photocurrent generation in carbon nanotube photodiodes enabled by a strong axial electric field

Creator:: McCulley, Daniel R., Senger, Mitchell J., Bertoni, Andrea, and Perebeinos., Vasili
Abstract:: Carbon nanotube (CNT) photodiodes have potential to convert light into electrical current with high efficiency. However, previous experiments have revealed photocurrent quantum yield (PCQY) well below 100%. In this work, we show that axial electric field increases the PCQY of CNT photodiodes. In optimal conditions our data suggest PCQY >...
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Full Text:: the nanotube could be 650 nm above the split gates (i.e. level with the top of the source and drain

Quantifying spatial differences in metabolism in headwater streams

Creator:: Gonzalez-Pinzon, Ricardo, Haggerty, Roy, and Argerich, Alba
Abstract:: Stream functioning includes simultaneous interaction among solute transport, nutrient processing, and metabolism. Metabolism is measured with methods that have limited spatial representativeness and are highly uncertain. These problems restrict development of methods for up-scaling biological processes that mediate nutrient processing. We used the resazurin–resorufin (Raz-Rru) tracer system to estimate metabolism...
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Full Text:: metabolism at the subreach and reach scales (Eq. 2). 244 We used specific conductance (EC) as a proxy for

Response of Highbush Blueberry to Nitrogen Fertilizer During Field Establishment, I: Accumulation and Allocation of Fertilizer Nitrogen and Biomass

Creator:: Pilar Banados, M., Strik, Bernadine C., Bryla, David R., and Righetti, Timothy L.
Abstract:: The effects of nitrogen (N) fertilizer application on plant growth, N uptake, and biomass and N allocation in highbush blueberry (Vaccinium corymbosum L. 'Bluecrop') were determined during the first 2 years of field establishment. Plants were either grown without N fertilizer after planting (0N) or were fertilized with 50, 100,...
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Full Text:: ) observed that electrical conductivity (EC) of soil solution under young blueberry plants reached levels as

Dynamics of nitrate production and removal as a function of residence time in the hyporheic zone

Creator:: Zarnetske, Jay P., Haggerty, Roy, Wondzell, Steven M., and Baker, Michelle A.
Abstract:: Biogeochemical reactions associated with stream nitrogen cycling, such as nitrification and denitrification, can be strongly controlled by water and solute residence times in the hyporheic zone (HZ). We used a whole‐stream steady state ¹⁵N‐labeled nitrate (¹⁵NO₃⁻) and conservative tracer (Cl⁻) addition to investigate the spatial and temporal physiochemical conditions controlling...
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Full Text:: stream at gravel bar and representative distal HZ well (K2) electrical conductivity (EC) breakthrough

Time-dependent, wind-driven flow over a shadow midshelf submarine bank

Creator:: Barth, John A., Pierce, S. D., and Castelao, R. M.
Abstract:: During summer 2001, high-resolution hydrographic, velocity, and bio-optical surveys were conducted over Heceta Bank off central Oregon. North of the bank, upwelling over simple bottom topography exhibited a classic response with a midshelf, baroclinic coastal jet and upwelled isopycnals. The coastal upwelling jet follows the bank topography as it widens...
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Full Text:: obtained from near-bottom ac-9 measurements. The light attenuation at 650 nm in m�1, also known as ‘‘beam-c

Nuclear and chloroplast microsatellite markers to assess genetic diversity and evolution in hazelnut species, hybrids and cultivars

Creator:: Bassil, Nahla, Boccacci, Paolo, Botta, Roberto, Postman, Joseph, and Mehlenbacher, Shawn
Abstract:: The US Department of Agriculture, Agricultural Research Service, National Clonal Germplasm Repository in Corvallis, Oregon, preserves more than 800 accessions of hazelnut (Corylus), including C. avellana cultivars and representatives of 10 other recognized shrub and tree species. Characterization and study of genetic diversity in this collection require cross-transferable markers, such...
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Full Text:: u ta C C 3 .1 1 3 Q u eb ec Q u eb ec Q C . co r. C C O R 8 1 8 6 1 P I 6 3 7 8 9 9

Identifying genomic and metabolic features that can underlie early successional and opportunistic lifestyles of human gut symbionts

Creator:: Lozupone, Catherine, Faust, Karoline, Raes, Jeroen, Faith, Jeremiah J., Frank, Daniel N., Zaneveld, Jesse, Gordon, Jeffrey I., and Knight, Rob
Abstract:: We lack a deep understanding of genetic and metabolic attributes specializing in microbial consortia for initial and subsequent waves of colonization of our body habitats. Here we show that phylogenetically interspersed bacteria in Clostridium cluster XIVa, an abundant group of bacteria in the adult human gut also known as the...
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Full Text:: part of an operon that con- tains 3-hydroxy-butyryl CoA dehydratase (K01715;EC:4.2.1.55), and in two

Patterns in the occupancy and abundance of the globally rare lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska

Creator:: Stehn, Sarah E., Nelson, Peter R., Roland, Carl A., and Jones, Jennifer R.
Abstract:: We investigated habitat attributes related to the occupancy of the globally rare and endangered epiphytic lichen, Erioderma pedicellatum, in a newly discovered (2009) population center in Denali National Park and Preserve (DNPP), Alaska. We measured forest, tree and epiphytic lichen community characteristics on eighty-five systematically selected plots in four study...
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Full Text:: im u m in p ar en th es es w h en ap p li ca b le . T re e sp ec ie s in cl u d e th

The effect of environmental chemicals on the tumor microenvironment

Creator:: Casey, Stephanie C., Vaccari, Monica, Al-Mulla, Fahd, Al-Temaimi, Rabeah, Amedei, Amedeo, Barcellos-Hoff, Mary Helen, Brown, Dustin G., Chapellier, Marion, Christopher, Joseph, Curran, Colleen S., Forte, Stefano, Hamid, Roslida A., Heneberg, Petr, Koch, Daniel C., Krishnakumar, P. K., Laconi, Ezio, Maguer-Satta, Veronique, Marongiu, Fabio, Memeo, Lorenzo, Mondello, Chiara, Raju, Jayadev, Roman, Jesse, Roy, Rabindra, Ryan, Elizabeth P., Ryeom, Sandra, Salem, Hosni K., Scovassi, A. Ivana, Singh, Neetu, Soucek, Laura, Vermeulen, Louis, Whitfield, Jonathan R., Woodrick, Jordan, Colacci, Annamaria, Bisson, William H., and Felsher, Dean W.
Abstract:: Potentially carcinogenic compounds may cause cancer through direct DNA damage or through indirect cellular or physiological effects. To study possible carcinogens, the fields of endocrinology, genetics, epigenetics, medicine, environmental health, toxicology, pharmacology and oncology must be considered. Disruptive chemicals may also contribute to multiple stages of tumor development through effects...
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Full Text:: addressed. Tel: +1 650 725 6454; Fax: +1 650 725 1420; Email: dfelsher@stanford.edu Correspondence may

The roles of MCDW and deep water iron supply in sustaining a recurrent phytoplankton bloom on central Pennell Bank (Ross Sea)

Creator:: Kustka, Adam B., Kohut, Josh T., White, Angelicque E., Milligan, Allen J., Lam, Phoebe J., Dinniman, Michael S., Mack, Stefanie, Hunter, Elias, Hiscock, Michael R., Smith, Walker O., Jr., and Measures, Chris I.
Abstract:: See pdf for abstract.
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Full Text:: -column containing �200 μL of Toyopearl AF Che- late-650 resin, and extracted in sub-boiled 1 M trace

To Act or Not to Act: Context, Capability, and Community Response to Environmental Risk

Creator:: Wright, Rachel A. and Boudet, Hilary Schaffer
Abstract:: Social movement theory has rarely been tested with counterfactual cases, that is, instances in which movements do not emerge. Moreover, contemporary theories about political opportunity and resources often inadequately address the issue of motivation. To address these shortcomings, this article examines 20 communities that are "at risk" for mobilization because...
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Full Text:: . . . . . . . . . . . . . H yd ro el ec tr ic .6 .8 .8 .2 0 .6 .6 B ra zo ri a C ou n ty , T ex

Modeling carbohydrate ballasting by Trichodesmium spp.

Creator:: White, Angelicque E., Spitz, Yvette H., and Letelier, Ricardo M.
Abstract:: We report the development of a numerical model simulating vertical movement of the cyanobacterium Trichodesmium spp. Given a range of physiological parameters derived from the literature, resultant model solutions allow us to explore the ecological significance of vertical migration by Trichodesmium colonies in a stratified oligotrophic oceanic system such as...
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Full Text:: , nutrient uptake, or loss pro- v gr A( ) / ( )= −2 9 2 ρ ρ φηc w PAR PAR0 PARz k z= ⋅ − ⋅e d d e ec PAR

Minor nutrients are critical for the improved growth of Corylus avellana shoot cultures

Creator:: Hand, Charles and Reed, Barbara M.
Abstract:: Many hazelnut (Corylus avellana L.) cultivars fail to thrive in vitro on standard growth medium and the reasons for poor growth are not well understood. Our initial study of five C. avellana cultivars showed that changes in the mineral nutrients of Driver and Kuniyuki walnut (DKW) medium, including doubling the...
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Full Text:: : 26–650 ppm Mn, 51–400 ppm Fe, 5–15 ppm Cu, 31–75 ppm B, and 16–60 ppm Zn (Olsen 2013). Most plant

Maximum height in a conifer is associated with conflicting requirements for xylem design

Creator:: Domec, Jean-Christophe, Lachenbruch, Barbara, Meinzer, Frederick C., Woodruff, David R., Warren, Jeffrey M., and McCulloh, Katherine A.
Abstract:: Despite renewed interest in the nature of limitations on maximum tree height, the mechanisms governing ultimate and species-specific height limits are not yet understood, but likely involve water transport dynamics. Tall trees experience increased risk of xylem embolism from air-seeding because tension in their water column increases with height due...
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Full Text:: control in preventing xylem cavitation. Tree Physiol 19:453-459. 36. Choat B, Lahr EC, Melcher PJ

Fish use of turbulence around wood in winter: Physical experiments on hydraulic variability and habitat selection by juvenile coho salmon, Oncorhynchus kisutch

Creator:: Tullos, Desirée and Walter, Cara
Abstract:: Re-introduction of large wood for expanding hydraulic variability is an increasingly common practice, yet it is not yet known what elements of hydraulic variability are most beneficial to fish. In an experiment designed to emphasize the minimization of energy expenditure through controlled predation and drift, we investigated whether juvenile coho,...
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Full Text:: habitats. Trans Am Fish Soc 135:1681-1697 564 Enders EC, Boisclair D, Roy AG (2003) The effect of

Bacterial dominance in subseafloor sediments characterized by methane hydrates

Creator:: Briggs, Brandon R., Inagaki, Fumio, Morono, Yuki, Futagami, Taiki, Huguet, Carme, Rosell-Mele, Antoni, Lorenson, Thomas D., and Colwell, Frederick S.
Abstract:: The degradation of organic carbon in subseafloor sediments on continental margins contributes to the largest reservoir of methane on Earth. Sediments in the Andaman Sea are composed of ~ 1% marine-derived organic carbon and biogenic methane is present. Our objective was to determine microbial abundance and diversity in sediments that...
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Full Text:: from 50 to 650 m/z. The glycerol compounds were derivatized online with N,O-bis(trimethylsilyl)triflu

An optical technique for the measurement of longshore currents

Creator:: Chickadel, C. C., Holman, Robert A., and Freilich, Michael H.
Abstract:: We present an optical method (optical current meter) to measure the longshore component of nearshore surface currents by measuring the alongshore drift of persistent sea foam in the surf zone. The method uses short time series of video data collected from an alongshore array of pixels. These space-time data are...
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Full Text:: 650 655 660 665 670 -2 0 2 0 0. 5 1 1. 5 2 x 10 4 velocity (m/s) S(v) v = 0.02 m/s S(v

Wild bee diversity is enhanced by experimental removal of timber harvest residue within intensively managed conifer forest

Creator:: Rivers, James W., Mathis, Codey L., Moldenke, Andrew R., and Betts, Matthew G.
Abstract:: The use of timber harvest residue as an energy source is thought to have environmental benefits relative to food-based crops, yet the ecological impact of this practice remains largely unknown. We assessed whether the abundance and diversity of wild bees (Apoidea) were influenced by the removal of harvest residue and...
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Full Text:: Cascade Mountains (44.02°N, 122.45°W, 650 masl) as part of the broader NARA study noted above. As the

Causes of genome instability: the effect of low dose chemical exposures in modern society

Creator:: Langie, Sabine A. S., Koppen, Gudrun, Desaulniers, Daniel, Al-Mulla, Fahd, Al-Temaimi, Rabeah, Amedei, Amedeo, Azqueta, Amaya, Bisson, William H., Brown, Dustin, Brunborg, Gunnar, Charles, Amelia K., Chen, Tao, Colacci, Annamaria, Darroudi, Firouz, Forte, Stefano, Gonzalez, Laetitia, Hamid, Roslida A., Knudsen, Lisbeth E., Leyns, Luc, Lopez de Cerain Salsamendi, Adela, Memeo, Lorenzo, Mondello, Chiara, Mothersill, Carmel, Olsen, Ann-Karin, Pavanello, Sofia, Raju, Jayadev, Rojas, Emilio, Roy, Rabindra, Ryan, Elizabeth, Ostrosky-Wegman, Patricia, Salem, Hosni K., Scovassi, A. Ivana, Singh, Neetu, Vaccari, Monica, Van Schooten, Frederik J., Valverde, Mahara, Woodrick, Jordan, Zhang, Luoping, van Larebeke, Nik, Kirsch-Volders, Micheline, and Collins, Andrew R.
Abstract:: Genome instability is a prerequisite for the development of cancer. It occurs when genome maintenance systems fail to safeguard the genome’s integrity, whether as a consequence of inherited defects or induced via exposure to environmental agents (chemicals, biological agents and radiation). Thus, genome instability can be defined as an enhanced...
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Precise interpolar phasing of abrupt climate change during the last ice age

Creator:: Buizert, Christo, Adrian, Betty, Ahn, Jinho, Albert, Mary, Alley, Richard B., Baggenstos, Daniel, Bauska, Thomas K., Bay, Ryan C., Bencivengo, Brian B., Bentley, Charles R., Brook, Edward J., Chellman, Nathan J., Clow, Gary D., Cole-Dai, Jihong, Conway, Howard, Cravens, Eric, Cuffey, Kurt M., Dunbar, Nelia W., Edwards, Jon S., Fegyveresi, John M., Ferris, Dave G., Fitzpatrick, Joan J., Fudge, T. J., Gibson, Chris J., Gkinis, Vasileios, Goetz, Joshua J., Gregory, Stephanie, Hargreaves, Geoffrey M., Iverson, Nels, Johnson, Jay A., Jones, Tyler R., Kalk, Michael L., Kippenhan, Matthew J., Koffman, Bess G., Kreutz, Karl, Kuhl, Tanner W., Lebar, Donald A., Lee, James E., Marcott, Shaun A., Markle, Bradley R., Maselli, Olivia J., McConnell, Joseph R., McGwire, Kenneth C., Mitchell, Logan E., Mortensen, Nicolai B., Neff, Peter D., Nishiizumi, Kunihiko, Nunn, Richard M., Orsi, Anais J., Pasteris, Daniel R., Pedro, Joel B., Pettit, Erin C., Price, P. Buford, Priscu, John C., Rhodes, Rachael H., Rosen, Julia L., Schauer, Andrew J., Schoenemann, Spruce W., Sendelbach, Paul J., Severinghaus, Jeffrey P., Shturmakov, Alexander J., Sigl, Michael, Slawny, Kristina R., Souney, Joseph M., Sowers, Todd A., Spencer, Matthew K., Steig, Eric J., Taylor, Kendrick C., Twickler, Mark S., Vaughn, Bruce H., Voigt, Donald E., Waddington, Edwin D., Welten, Kees C., Wendricks, Anthony W., White, James W. C., Winstrup, Mai, Wong, Gifford J., and Woodruff, Thomas E.
Abstract:: The last glacial period exhibited abrupt Dansgaard–Oeschger climatic oscillations, evidence of which is preserved in a variety of Northern Hemisphere palaeoclimate archives¹. Ice cores show that Antarctica cooled during the warm phases of the Greenland Dansgaard–Oeschger cycle and vice versa[superscript 2,3], suggesting an interhemispheric redistribution of heat through a mechanism...
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Full Text:: –38 N G R IP δ 18 O (‰ ) 350 400 450 500 550 600 650 W D C C H 4 (p .p .b .) –42

Sediment size fractionation and focusing in the equatorial Pacific: Effect on ²³⁰Th normalization and paleoflux measurements

Creator:: Lyle, Mitchell, Marcantonio, Franco, Moore, Willard S., Murray, Richard W., Huh, Chih-An, Finney, Bruce P., Murray, David W., and Mix, Alan C.
Abstract:: We use flux, dissolution, and excess ²³⁰Th data from the Joint Global Ocean Flux Study and Manganese Nodule Project equatorial Pacific study Site C to assess the extent of sediment focusing in the equatorial Pacific. Measured mass accumulation rates (MAR) from sediment cores were compared to reconstructed MAR by multiplying...
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Full Text:: 650 potentially can explain why it is very difficult to identify any cores in the tropical Pacific

Dielectric Engineering Boosts the Efficiency of Carbon Nanotube Photodiodes

Creator:: Senger, Mitchell J., Kefayati, Ali, Bertoni, Andrea, Perebeinos, Vasili, and Minot, Ethan D.
Abstract:: Carbon nanotube (CNT) photodiodes are a promising system for high-efficiency photocurrent generation due to the strong Coulomb interactions that can drive carrier multiplication. If the Coulomb interactions are too strong, however, exciton formation can hamper photocurrent generation. Here, we explore, experimentally and theoretically, the effect of the environmental dielectric constant...
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Full Text:: scale in CNTs is EC = e2/40effD where D is the CNT diameter, e is the electron charge, 0 is vacuum

Internal hydraulic flows on the continental shelf: High drag states over a small bank

Creator:: Nash, Jonathan D. and Moum, James N.
Abstract:: Observations of currents, hydrography, and turbulence provide unambiguous evidence for hydraulic control of flow over an isolated three-dimensional topographic feature on Oregon’s continental shelf. The flow becomes critical at the crest of the bank, forming a strong supercritical downslope flow in the lower layer. Farther downstream, internal hydraulic jumps form...
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Full Text:: =3 z •2 P E 1 EC --0 ' ' 01 '--1024.2 •:g/m3, ql =0 m2/s ...... , .;:.::.½..;:•.•j• a

Noble gases and coupled heat/fluid flow modeling for evaluating hydrogeologic conditions of volcanic island aquifers

Creator:: Heilweil, Victor M., Healy, Richard W., and Harris, Robert N.
Abstract:: Understanding groundwater conditions in the upland parts of volcanic island aquifers is critical for sustainable groundwater development in these resource-limited environments. Yet groundwater conditions in such settings are generally difficult to characterize because of sparse well drilling (high cost and/or limited access). Information needed for resource evaluation includes upland depth...
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Full Text:: 126 Specific conductance (lS/cm) 520 1170 350 560 650 652 pH (standard units) 7.6 7.5 8.4 7.8 7.7 8.3

Simulated tsunami inundation for a range of Cascadia megathrust earthquake scenarios at Bandon, Oregon, USA

Creator:: Witter, Robert C., Zhang, Yinglong J., Wang, Kelin, Priest, George R., Goldfinger, Chris, Stimely, Laura, English, John T., and Ferro, Paul A.
Abstract:: Characterizations of tsunami hazards along the Cascadia subduction zone hinge on uncertainties in megathrust rupture models used for simulating tsunami inundation. To explore these uncertainties, we constructed 15 megathrust earthquake scenarios using rupture models that supply the initial conditions for tsunami simulations at Bandon, Oregon. Tsunami inundation varies with the...
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Full Text:: ) (0.16) (1.0) (0.53) (0.26) XXL 1050–1200 650–800 425-525 300 1200 (0.025) (0.6) (0.2) (0.2

Genetic diversity within late-summer run and half-pounder steelhead (Oncorhynchus mykiss) in the Rogue River, Oregon

Creator:: Dayan, David I., Mazur, Steve, Green, Laura J., Wells, Andrew J., Johnson, Marc A., Van Dyke, Daniel J., Samarin, Peter A., Battleson, Ryan D., and O'Malley, Kathleen G.
Abstract:: Anadromous Oncorhynchus mykiss (steelhead) express diverse migratory behaviors and life history strategies. Adult migration timing diversity within steelhead is often categorized into divergent early- and late-migration phenotypes. On the Rogue River in Oregon, adult steelhead return from the ocean during distinct early-summer, late-summer, and winter runs. Additionally, some juvenile steelhead...
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Full Text:: , Anderson EC, Kardos M, Koch I, McKinney G, Miller MR, 581 Myers J, Naish K, Narum S, O'Malley KG, Pearse D

Garwood Valley, Antarctica: A new record of Last Glacial Maximum to Holocene glaciofluvial processes in the McMurdo Dry Valleys

Creator:: Levy, Joseph S., Fountain, Andrew G., O'Connor, Jim E., Welch, Kathy A., and Lyons, W. Berry
Abstract:: We document the age and extent of late Quaternary glaciofluvial processes in Garwood Valley, McMurdo Dry Valleys, Antarctica, using mapping, stratigraphy, geochronology, and geochemical analysis of sedimentary and ice deposits. Geomorphic and stratigraphic evidence indicates damming of the valley at its Ross Sea outlet by the expanded Ross Sea ice...
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Full Text:: ~650 m in total length and ~280 m at their widest. The surfaces of the deltas step lower in the down

Herbage and Sheep Production from Simple, Diverse, and Legume Pastures Established in an Agrivoltaic Production System

Creator:: Andrew, Alyssa C., Higgins, Chad W., Smallman, Mary A., Prado-Tarango, David E., Rosati, Adolfo, Ghajar, Shayan, Graham, Maggie, and Ates, Serkan
Abstract:: Agrivoltaic systems combine solar energy and agriculture, promoting dual land use. Although grazing sheep in these systems is common, research on intentionally designed pastures to increase production is lacking. This study seeks to compare the herbage growth and lamb production in simple, diverse, and legume pastures in an agrivoltaic system...
Resource Type:: Article
Full Text:: areas for a total of nine sensors. A combination of 5TM, EC-5, and GS3 (Decagon Devices, Inc., 136

A GCxGC-ToFMS Investigation of the Unresolved Complex Mixture and Associated Biomarkers in Biodegraded Petroleum

Creator:: Wang Guangli, Simoneit, Bernd Rolf Tatsuo, Shi Shengbao, Wang Tieguan, Zhong Ningning, and Wang Peirong
Abstract:: Heavy biodegraded crude oils have larger numbers of coeluting compounds than non- biodegraded oils, and they are typically not resolved with conventional gas chromatography (GC). This unresolved complex mixture (UCM) has been investigated using comprehensive two- dimensional gas chromatography-time-of-flight mass spectrometry (GCxGC-ToFMS) within a set of biodegraded petroleums derived from...
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Full Text:: tc ro p So lid b itu m en Si ch ua n B as in Pr ec am br ia n, m ar in e M od

Trade-offs in ecosystem impacts from nanomaterial versus organic chemical ultraviolet filters in sunscreens

Creator:: Hanigan, David, Truong, Lisa, Schoepf, Jared, Nosaka, Takayuki, Mulchandani, Anjali, Tanguay, Robert L., and Westerhoff, Paul
Abstract:: Both nanoparticulate (nZnO and nTiO(2)) and organic chemical ultraviolet (UV) filters are active ingredients in sunscreen and protect against skin cancer, but limited research exists on the environmental effects of sunscreen release into aquatic systems. To examine the trade-offs of incorporating nano particles (NPs) into sunscreens over the past two...
Resource Type:: Article
Full Text:: 650 nm. Nanoparticles extracted from sunscreens or organic UV filters were diluted into 96-well plates

Dispersal strength determines meta-community structure in a dendritic riverine network

Creator:: Cañedo-Argüelles, Miguel, Boersma, Kate S., Bogan, Michael T., Olden, Julian D., Phillipsen, Ivan, Schriever, Tiffany A., and Lytle, David A.
Abstract:: AIM: Meta-community structure is a function of both local (site-specific) and regional (landscape-level) ecological factors, and the relative importance of each may be mediated by the dispersal ability of organisms. Here, we used aquatic invertebrate communities to investigate the relationship between local and regional factors in explaining distance decay relationships...
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Full Text:: Indicators, 218 Whatman International, Maidstone, England) and conductivity (Milwaukee waterproof 219 EC

Body Size and Growth Rate Influence Emigration Timing of Oncorhynchus mykiss

Creator:: Tattam, Ian A., Ruzycki, James R., Li, Hiram W., and Giannico, Guillermo R.
Abstract:: Juvenile Oncorhynchus mykiss migrate extensively in freshwater during fall. We used individual tagging to study the spatial origin, influences, and outcomes of fall migration on fish that emigrated from summer rearing tributaries during fall (early-emigrants) and those that did not (late-emigrants) in the South Fork John Day River, Oregon. Fall...
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Full Text:: . Journal of Fish Biology 52:638–650. 428 Kahler, T. H., P. Roni, and T. P. Quinn. 2001. Summer movement

Analysis of a GRACE global mascon solution for Gulf of Alaska glaciers

Creator:: Arendt, Anthony, Luthcke, Scott, Gardner, Alex, O'Neel, Shad, Hill, David, Moholdt, Geir, and Abdalati, Waleed
Abstract:: We present a high-resolution Gravity Recovery and Climate Experiment (GRACE) mascon solution for Gulf of Alaska (GOA) glaciers and compare this with in situ glaciological, climate and other remote-sensing observations. Our GRACE solution yields a GOA glacier mass balance of -65 ± 11 Gta⁻¹ for the period December 2003 to...
Resource Type:: Article
Full Text:: Alaska and St Elias Ranges (�300 and 650 km from Mount Redoubt, respectively). Snow albedo is very

Differential DNA Methylation in Umbilical Cord Blood of Infants Exposed to Low Levels of Arsenic in Utero

Creator:: Koestler, Devin C., Avissar-Whiting, Michele, Houseman, E. Andres, Karagas, Margaret R., and Marsit, Carmen J.
Abstract:: Background: There is increasing epidemiologic evidence that arsenic exposure in utero, even at low levels found throughout much of the world, is associated with adverse reproductive outcomes and may contribute to long-term health effects. Animal models, in vitro studies, and human cancer data suggest that arsenic may induce epigenetic alterations,...
Resource Type:: Article
Full Text:: USA. Telephone: (603) 650- 1825. E-mail: Carmen.J.Marsit@Dartmouth.edu Supplemental Material is

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