Index Catalog // ScholarsArchive@OSU

Creator:: Harthcock, Colin, Zhang, Jie, and Kong, Wei
Abstract:: We report zero kinetic energy (ZEKE) photoelectron spectroscopy of benzo[h]quinoline (BhQ) via resonantly enhanced multiphoton ionization (REMPI) through the first electronically excited state S₁. From the simulated REMPI spectra with and without Herzberg–Teller coupling, we conclude that vibronic coupling plays a minor but observable role in the electronic excitation to...
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Full Text:: Zero Kinetic Energy Photoelectron Spectroscopy of Benzo[h

Creator:: Minato, Yusuke, Ghosh, Amit, Faulkner, Wyatt J., Lind, Erin J., Schesser Bartra, Sara, Plano, Gregory V., Jarrett, Clayton O., Hinnebusch, B. Joseph, Winogrodzki, Judith, Dibrov, Pavel, and Hase, Claudia C.
Abstract:: Na⁺/H⁺ antiporters are ubiquitous membrane proteins that play a central role in the ion homeostasis of cells. In this study, we examined the possible role of Na⁺/H⁺ antiport in Yersinia pestis virulence and found that Y. pestis strains lacking the major Na⁺/H⁺ antiporters, NhaA and NhaB, are completely attenuated in...
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Full Text:: Na�/H� Antiport Is Essential for Yersinia pestis Virulence

Creator:: Pangle, Luke A., Klaus, Julian, Berman, Elena S. F., Gupta, Manish, and McDonnell, Jeffrey J.
Abstract:: Measurements of δ²H and δ¹⁸O in isotope-based field studies have fundamentally improved our understanding of water flow and transport time scales in soils and headwater catchments. Until recently, however, technical constraints have limited the temporal resolution at which water samples could be collected and analyzed. We introduce a new sample...
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Full Text:: ²H and δ¹⁸O in hydrological field studies A new multisource and high-frequency approach to

Creator:: Neal, James T., Peterson, Tracy S., Kent, Michael L., and Guillemin, Karen
Abstract:: Infection with Helicobacter pylori is a major risk factor for the development of gastric cancer, and infection with strains carrying the virulence factor CagA significantly increases this risk. To investigate the mechanisms by which CagA promotes carcinogenesis, we generated transgenic zebrafish expressing CagA ubiquitously or in the anterior intestine. Transgenic...
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Full Text:: H. pylori is linked to numerous gastric disorders including gastritis, peptic ulcer disease and

Creator:: Haller, Merrick C. and Özkan-Haller, H. Tuba
Abstract:: Models for surface gravity wave propagation in the presence of currents often assume the current field to be quasi-stationary, which implies that the absolute wave frequency is time invariant. However, in the presence of unsteady currents or time-varying water depth, linear wave theory predicts a time variation of the absolute...
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Full Text:: �1− xL �, the first seiching mode is given by �̂ = − i H 2 J0�2C �, û = H 2 g h J1�2C

Creator:: Kurapov, Alexander L. and Özkan-Haller, H. Tuba
Abstract:: The impact of assimilation of wave-averaged flow velocities on the bathymetric correction is studied in tests with synthetic (model-generated) data using tangent-linear and adjoint components of a one-way coupled nearshore wave-circulation model. Weakly and strongly nonlinear regimes are considered, featuring energetic unsteady along-beach flows responding to time-independent wave-averaged forcing due...
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Full Text:: Alexander L. Kurapov1 and H. Tuba €Ozkan-Haller1 Received 19 December 2012; revised 1 July 2013; accepted 6

Creator:: Wilson, Greg and Özkan-Haller, H. Tuba
Abstract:: A method is presented for estimating bathymetry in a river, based on observations of depth-averaged velocity during steady flow. The estimator minimizes a cost function that combines known information in the form of a prior estimate and measured data (including measurement noise). State augmentation is used to relate the measured...
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Full Text:: Estimation of River Depths GREG WILSON AND H. TUBA ÖZKAN-HALLER College of Earth, Ocean, and Atmospheric

Creator:: Chelton, Dudley B and Freilich, Michael H.
Abstract:: Wind measurements by the National Aeronautics and Space Administration (NASA) scatterometer (NSCAT) and the SeaWinds scatterometer on the NASA QuikSCAT satellite are compared with buoy observations to establish that the accuracies of both scatterometers are essentially the same. The scatterometer measurement errors are best characterized in terms of random component...
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Full Text:: Operational ECMWF and NCEP Numerical Weather Prediction Models DUDLEY B. CHELTON AND MICHAEL H. FREILICH

Creator:: Smyth, W. D., Burchard, H., and Umlauf, L.
Abstract:: Interleaving motions on a wide, baroclinic front are modeled using a second-moment closure to represent unresolved fluxes by turbulence and salt fingering. A linear perturbation analysis reveals two broad classes of unstable modes. First are scale-selective modes comparable with interleaving as observed in oceanic fronts. These correspond well with observations...
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Full Text:: -Moment Closure Approach W. D. SMYTH, H. BURCHARD, AND L. UMLAUF Leibniz Institute for Baltic Sea

Creator:: Shearman, R. Kipp and Brink, Kenneth H.
Abstract:: High‐resolution surveys of oceanographic and atmospheric conditions made during the winter over the inner shelf off northwest Australia are used to examine the coastal ocean response to large outgoing heat and freshwater fluxes. Relatively cool, low‐humidity air blows off the Australian continent out over the tropical continental shelf, resulting in...
Resource Type:: Article
Full Text:: and Kenneth H. Brink2 Received 21 October 2009; revised 8 January 2010; accepted 2 February 2010

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