Browsing Ohio State University Research and Scholarship by Title
Now showing results 795-814 of 833
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Ultraintense X-Ray Induced Ionization, Dissociation, and Frustrated Absorption in Molecular Nitrogen
Hoener, M.; Fang, L.; Kornilov, O.; Gessner, O.; Pratt, S. T.; Gühr, M.; Kanter, E. P.; Blaga, C.; Bostedt, C.; Bozek, J. D.; Bucksbaum, P. H.; Buth, C.; Chen, M.; Coffee, R.; Cryan, J.; DiMauro, L.; Glownia, M.; Hosler, E.; Kukk, E.; Leone, S. R.; McFarland, B.; Messerschmidt, M.; Murphy, B.; Petrovic, V.; Rolles, D.; Berrah, N. ( 2010-06-23 )Sequential multiple photoionization of the prototypical molecule N_2 is studied with femtosecond time resolution using the Linac Coherent Light Source (LCLS). A detailed picture of intense x-ray induced ionization and ... -
Undergraduate Student Government Lighting Task Force Report
Sai, Sunder ( 2018 )The USG Lighting Task Force used Lux Meters to measure light posts in the area of the University District known as the Core, one of the most populated off-campus living areas for OSU students. The area that was evaluated ... -
Unified Electron-Ion Recombination Rate Coefficients of Silicon and Sulfur Ions
Nahar, Sultana Nurun; Pradhan, Anil K. ( 1995-07-10 )Total recombination rate coefficients for the astrophysically important Si and S ions, Si I, Si II, Si IX, S II, and S III, are obtained employing a new unified treatment developed for electron-ion recombination. The treatment ... -
Unified Electronic Recombination of Ne-like Fe XVII: Implications for Modeling X-Ray Plasmas
Nahar, Sultana Nurun; Pradhan, Anil K.; Zhang, Hong Lin ( 2001-03 )Unified recombination cross sections and rates are computed for (e + Fe XVIII) → Fe XVII including nonresonant and resonant (radiative recombination [RR] and dielectronic recombination [DR]) processes in an ab initio manner ... -
Unified treatment of electron-ion recombination in the close-coupling approximation
Nahar, Sultana Nurun; Pradhan, Anil K. ( 1994-03 )A unified treatment for electron-ion recombination has been developed and applied to detailed calculations for cross sections and total recombination rate coefficients for a number of atoms and ions. The ab initio calculations ... -
Uniform subelliptic estimates on scaled convex domains of finite type
McNeal, Jeffery D. ( 2002 )We show that a uniform subelliptic estimate for the <(<partial derivative>)over bar>-Neumann problem holds on a certain family of convex domains of finite type. -
Universal short-distance structure of the single-particle spectral function of dilute Fermi gases
Schneider, William; Randeria, Mohit ( 2010-02-03 )We show that the universal 1/k^4 tail in the momentum distribution of dilute Fermi gases implies that the spectral function A(k,ω) must have weight below the chemical potential for large momentum k≫k_F, with observable ... -
Upper Limit to the Distance to the Large Magellanic Cloud
Gould, Andrew; Uza, Osamu ( 1998-02-10 )We remeasure the "light echo" times to the near and far side of the ring around SN 1987A using the method of Gould and the new reductions of the original UV spectra by Sonneborn et al. Under the assumption that the ring ... -
Urinary TWEAK as a biomarker of lupus nephritis: a multicenter cohort study
Schwartz, Noa; Rubinstein, Tamar; Burkly, Linda C.; Collins, Christopher E.; Blanco, Irene; Su, Lihe; Hojaili, Bernard; Mackay, Meggan; Aranow, Cynthia; Stohl, William; Rovin, Brad H.; Michaelson, Jennifer S.; Putterman, Chaim ( 2009-09-28 )Introduction: TNF-like weak inducer of apoptosis (TWEAK) has been implicated as a mediator of chronic inflammatory processes via prolonged activation of the NF-κB pathway in several tissues, including the kidney. Evidence ... -
Use of an integrated clinical trial database to evaluate the effect of timing of drotrecogin alfa (activated) treatment in severe sepsis
Vincent, Jean-Louis; O'Brien, James Jr.; Wheeler, Arthur; Wittebole, Xavier; Garg, Rekha; Trzaskoma, Benjamin L.; Sundin, David P. ( 2006-05-09 )Introduction: Several studies have indicated that early identification and treatment of patients with severe sepsis using standard supportive care improves outcomes. Earlier treatment with drotrecogin alfa (activated) ... -
Usefulness of Ultrahigh Resolution Microstructural Studies for Understanding Localized Corrosion Behavior of Al Alloys
Kappes, M.; Kovarik, L.; Mills, M. J.; Frankel, G. S.; Miller, M. K. ( 2008-06-18 )The corrosion behavior of different tempers of two aluminum alloys, AA7050 and an experimental Al–Mg–Cu–Si alloy, was studied in NaCl solution by anodic polarization and scanning electron microscopy and was correlated with ... -
Using the information embedded in the testing sample to break the limits caused by the small sample size in microarray-based classification
Zhu, Manli; Martinez, Aleix M. ( 2008-06-14 )Background: Microarray-based tumor classification is characterized by a very large number of features (genes) and small number of samples. In such cases, statistical techniques cannot determine which genes are correlated ... -
Using Ultra Long Period Cepheids to Extend the Cosmic Distance Ladder to 100 Mpc and Beyond
Bird, Jonathan; Stanek, K. Z.; Prieto, José L. ( 2009-04-20 )We examine the properties of 18 long period (80-210 days) and very luminous (median absolute magnitude of M_I = –7.86 and M_V = –6.97) Cepheids to see if they can serve as a useful distance indicator. We find that these ... -
Vacancy defect and defect cluster energetics in ion-implanted ZnO
Dong, Yufeng; Tuomisto, F.; Svensson, B. G.; Kuznetsov, A. Yu.; Brillson, Leonard J. ( 2010-02-01 )We have used depth-resolved cathodoluminescence, positron annihilation, and surface photovoltage spectroscopies to determine the energy levels of Zn vacancies and vacancy clusters in bulk ZnO crystals. Doppler broadening-measured ... -
Variability of Fe II Emission Features in the Seyfert 1 Galaxy NGC 5548
Vestergaard, Marianne; Peterson, Bradley M. ( 2005-06-01 )We study the low-contrast Fe II emission blends in the ultraviolet (1250-2200 Å) and optical (4000-6000 Å) spectra of the Seyfert 1 galaxy NGC 5548 and show that these features vary in flux and that these variations are ... -
Variability of Luminous Stars in the Large Magellanic Cloud Using 10 Years of ASAS Data
Szczygieł, D. M.; Stanek, K. Z.; Bonanos, A. Z.; Pojmański, G.; Pilecki, B.; Prieto, J. L. ( 2010-07 )Motivated by the detection of a recent outburst of the massive luminous blue variable LMC-R71, which reached an absolute magnitude M_V = –9.3 mag, we undertook a systematic study of the optical variability of 1268 massive ... -
Variations in air quality of new Ohio dairy facilities with natural ventilation systems
Zhao, L. Y.; Brugger, M. F.; Manuzon, R. B.; Arnold, G.; Imerman, E. ( 2007-05 )As dairy operations evolve towards larger, concentrated facilities, air quality on and around the dairy farms becomes a concern. Data on air quality in and around large dairy facilities are insufficient and therefore very ... -
Very-high-energy gamma-ray signal from nuclear photodisintegration as a probe of extragalactic sources of ultrahigh-energy nuclei
Murase, Kohta; Beacom, John F. ( 2010-08-19 )It is crucial to identify the ultrahigh-energy cosmic-ray sources and probe their unknown properties. Recent results from the Pierre Auger Observatory favor a heavy nuclear composition for the ultrahigh-energy cosmic rays. ... -
Vestibular Stimulation for ADHD: Randomized Controlled Trial of Comprehensive Motion Apparatus
Arnold, L. Eugene; Crowl, Lindsay; Bozzolo, Hernan; Peruggia, Mario; Ramadan, Yaser; Bornstein, Robert; Hollway, Jill A.; Thompson, Susan; Malone, Krista; Hall, Kristy L.; Shelton, Sara B.; Bozzolo, Dawn R.; Cook, Amy; Clark, David L. ( 2008 )Objective: This research evaluates effects of vestibular stimulation by Comprehensive Motion Apparatus (CMA) in ADHD. Method: Children ages 6 to 12 (48 boys, 5 girls) with ADHD were randomized to thrice-weekly ... -
Viscosity from elliptic flow: Clearing the path towards precision
Heinz, Ulrich; Moreland, John Scott; Song, Huichao ( 2009-12-08 )Using viscous relativistic hydrodynamics we show that systematic studies of the impact parameter dependence of the eccentricity-scaled elliptic flow ν_2/ɛ can distinguish between different models for the calculation of the ...