Browsing Ohio State University Research and Scholarship by Title
Now showing results 176-195 of 836
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Dexmethylphenidate: A Viewpoint
Arnold, L. Eugene ( 2002 ) -
Dielectronic satellite spectra of heliumlike iron and nickel from the unified recombination method
Nahar, Sultana Nurun; Pradhan, Anil K. ( 2006 )It is shown that resonances in the unified recombination cross sections correspond directly to dielectronic satellite spectra. Positions, intensities, and profiles of satellite lines may be obtained accurately using the ... -
Diffusion mechanisms for silicon di-interstitials
Du, Yaojun A.; Hennig, Richard G.; Wilkins, John W. ( 2006-06-12 )Tight-binding molecular dynamics and density-functional simulations on silicon seeded with a di-interstitial reveal its detailed diffusion mechanisms. The lowest-energy di-interstitial performs a translation/rotation ... -
Dipolar Bosons in a Planar Array of One-Dimensional Tubes
Kollath, C.; Meyer, Julia S.; Giamarchi, T. ( 2008-04-03 )We investigate bosonic atoms or molecules interacting via dipolar interactions in a planar array of one-dimensional tubes. We consider the situation in which the dipoles are oriented perpendicular to the tubes by an external ... -
Direct Measurement of Quantum Confinement Effects at Metal to Quantum-Well Nanocontacts
Tivarus, C.; Pelz, J. P.; Hudait, M. K.; Ringel, S. A. ( 2005-05-23 )Model metal-semiconductor nanostructure Schottky nanocontacts were made on cleaved heterostructures containing GaAs quantum wells (QWs) of varying width and were locally probed by ballistic electron emission microscopy. ... -
The Discovery of a Companion to the Lowest Mass White Dwarf
Kilic, Mukremin; Brown, Warren R.; Prieto, Carlos Allende; Pinsonneault, M. H.; Kenyon, S. J. ( 2007-08-01 )We report the detection of a radial velocity companion to SDSS J091709.55+463821.8, the lowest mass white dwarf currently known, with M ~ 0.17 Msun. The radial velocity of the white dwarf shows variations with a semi-amplitude ... -
Discovery of a Very Bright, Nearby Gravitational Microlensing Event
Gaudi, B. Scott; Patterson, Joseph; Spiegel, David S.; Krajci, Thomas; Koff, R.; Pojmański, G.; Dong, Subo; Gould, Andrew; Prieto, Jose L.; Blake, Cullen H.; Roming, Peter W. A.; Bennett, David P.; Bloom, Joshua S.; Boyd, David; Eyler, Michael E.; de Ponthière, Pierre; Mirabal, N.; Morgan, Christopher W.; Remillard, Ronald R.; Vanmunster, T.; Wagner, R. Mark; Watson, Linda C. ( 2008-04-20 )We report the serendipitous detection of a very bright, very nearby microlensing event. In late 2006 October, an otherwise unremarkable A0 star at a distance of ~1 kpc (GSC 3656–1328) brightened achromatically by a factor ... -
Discovery of Associated Absorption Lines in an X-Ray Warm Absorber: Hubble Space Telescope Faint Object Spectrograph Observations of MR 2251–178
Monier, Eric M.; Mathur, Smita; Wilkes, Belinda; Elvis, Martin ( 2001-10-01 )The presence of a "warm absorber" was first suggested to explain spectral variability in an X-ray spectrum of the radio-quiet quasi-stellar object (QSO) MR 2251-178. A unified picture, in which X-ray warm absorbers and ... -
Discriminating Between Children With ADHD and Classmates Using Peer Variables
Mrug, Sylvie; Hoza, Betsy; Gerdes, Alyson C.; Hinshaw, Stephen; Arnold, L. Eugene; Hechtman, Lily; Pelham, William E. ( 2008 )Objective: Impaired peer relationships have long been recognized as one of the major functional problems of children with ADHD, but no specific guidelines on clinical levels of impairment in this domain exist. Method: This ... -
Dissipative hydrodynamics for viscous relativistic fluids
Heinz, Ulrich; Song, Huichao; Chaudhuri, A. K. ( 2006-03-08 )Explicit equations are given for describing the space-time evolution of nonideal (viscous) relativistic fluids undergoing boost-invariant longitudinal and arbitrary transverse expansion. The equations are derived from the ... -
Dissolution Behavior of Al2CuMg (S Phase) in Chloride and Chromate Conversion Coating Solutions
Yoon, Yuhchae; Buchheit, R. G. ( 2006-03-09 )The dissolution rate and Cu surface enrichment of sputter-deposited Al_2CuMg thin films exposed to 0.5 M NaCl solutions and chromate conversion coating solutions has been characterized. Dissolution rates were measured ... -
The Distances to Open Clusters as Derived from Main-Sequence Fitting. II. Construction of Empirically Calibrated Isochrones
Pinsonneault, Marc H.; Terndrup, Donald M.; Hanson, Robert B.; Stauffer, John R. ( 2004-01-10 )We continue our series of papers on open cluster distances by comparing multicolor photometry of single stars in the Hyades with theoretical isochrones constructed with various color-temperature relations. After verifying ... -
The Distances to Open Clusters from Main-Sequence Fitting. I. New Models and a Comparison with the Properties of the Hyades Eclipsing Binary VB 22
Pinsonneault, Marc H.; Terndrup, Donald M.; Hanson, Robert B.; Stauffer, John R. ( 2003-11-20 )In the first of a new series of papers on open cluster distances, we use updated stellar evolution models to construct an isochrone appropriate for the Hyades and compare it with the Hyades eclipsing binary system VB 22. ... -
Distinguishing Between Binary-Source and Planetary Microlensing Perturbations
Gaudi, B. Scott ( 1998-10-20 )A planetary microlensing event is characterized by a short-lived perturbation to the standard microlensing curve. Planetary perturbations typically last from a few hours to a day, have maximum amplitudes, δ_max, of ±5%-20% ... -
The Distribution of Active Galactic Nuclei in Clusters of Galaxies
Martini, Paul; Mulchaey, John S.; Kelson, Daniel D. ( 2007-08-01 )We present a study of the distribution of AGNs in clusters of galaxies with a uniformly selected, spectroscopically complete sample of 35 AGNs in eight clusters of galaxies at z = 0.06 → 0.31. We find that the 12 AGNs with ... -
Diversity in conserved genes in tomato
Van Deynze, Allen; Stoffel, Kevin; Buell, C. Robin; Kozik, Alexander; Liu, Jia; van der Knaap, Esther; Francis, David ( 2007-12-18 )Background: Tomato has excellent genetic and genomic resources including a broad set of Expressed Sequence Tag (EST) data and high-density genetic maps. In addition, emerging physical maps and bacterial artificial clone ... -
Do Distinct Cosmological Models Predict Degenerate Halo Populations?
Zheng, Zheng; Tinker, Jeremy L.; Weinberg, David H.; Berlind, Andreas A. ( 2002-08-20 )Using cosmological N-body simulations, we investigate the influence of the matter density parameter Ω_m and the linear theory power spectrum P(k) on statistical properties of the dark matter halo population—the mass function ... -
Does switching from oral extended-release methylphenidate to the methylphenidate transdermal system affect health-related quality-of-life and medication satisfaction for children with attention-deficit/hyperactivity disorder?
Bukstein, Oscar G.; Arnold, L. Eugene; Landgraf, Jeanne M.; Hodgkins, Paul ( 2009-12-10 )Background: To evaluate health-related quality of life (HRQL) and medication satisfaction after switching from a stable dose of oral extended-release methylphenidate (ER-MPH) to methylphenidate transdermal system (MTS) ... -
Does Zinc Moderate Essential Fatty Acid and Amphetamine Treatment of Attention-Deficit/Hyperactivity Disorder?
Arnold, L. Eugene; Pinkham, Sandra M.; Votolato, Nicholas ( 2000 )Zinc is an important co-factor for metabolism relevant to neurotransmitters, fatty acids, prostaglandins, and melatonin, and indirectly affects dopamine metabolism, believed intimately involved in attention-deficit/hyperactivity ... -
A Double-Blind, Placebo-Controlled Withdrawal Trial of Dexmethylphenidate Hydrochloride in Children with Attention Deficit Hyperactivity Disorder
Arnold, L. Eugene; Lindsay, Ronald L.; Conners, C. Keith; Wigal, Sharon B.; Levine, Alan J.; West, Scott A.; Sangal, R. Bart; Bohan, Timothy P.; Zeldis, Jerome B. ( 2004 )Objectives: d,l-threo-methylphenidate HCl (d,l-MPH) is the most common treatment of attention deficit hyperactivity disorder (ADHD). A previous report showed placebo-controlled efficacy for the purified disomer (dexme ...