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Displaying 101 - 125 of 2289

Uranium Particle Age Dating, Aggregation, and Model Age Best Estimators

June 9, 2025
Author(s)
Evan Groopman, Todd Williamson, Timothy Pope, Michael Bronikowski, Spencer M. Scott, Matthew Wellons
… We present important aspects of uranium particle age dating by Large-Geometry Secondary Ion … and timely examination of critical aspects of uranium particle age dating as more laboratories establish … Uranium Particle Age Dating, Aggregation, and Model Age Best …

Predictive Model for Scanned Probe Oxidation Kinetics

January 1, 2000
Author(s)
John A. Dagata, F Perez-murano, G Abadal, K Morimoto, T Inoue, J Itoh, H Yokoyama
… Previous descriptions of scanned probe oxidation kinetics involved implicit assumptions that … field-enhanced oxidation, kinetics, nanofabrication, scanned probe … Predictive Model for Scanned Probe Oxidation Kinetics …

Characterization of Metal-Oxide Nanofilm Morphologies and Composition by Terahertz Transmission Spectroscopy

March 30, 2009
Author(s)
Edwin J. Heilweil, James E. Maslar, William A. Kimes, Nabil Bassim, Peter K. Schenck
… non-destructive characterization of nanometer-scale metal-oxide thin films grown on silicon substrates is described. … transmission spectroscopy, phonon modes, titanium oxide, hafnium oxide, far-infrared, morphology … Characterization of Metal-Oxide Nanofilm Morphologies and Composition by Terahertz …

Current, Charge, and Capacitance During Scanning Probe Oxidation. I. Maximum Charge Density and Lateral Diffusion

August 15, 2004
Author(s)
John A. Dagata, F Perez-murano, C Martin, H Kuramochi, H Yokoyama
… current passing through the tip-substrate junction during oxidation of silicon by scanning probe microscopy (SPM) is … formation. In Part I of this work, we demonstrate that SPM oxidation is governed by a maximum charge density generated … electronic species within the junction at the onset of the oxidation process. Excess charge is channeled into lateral …

Model-based vision for car following

September 1, 1993
Author(s)
H Schneiderman, M Nashman, Ronald Lumia
… SPIE Sensor Fusion VI … Proceedings of the SPIE Sensor Fusion VI …

Self-assembled Monolayers of Methyl 1-thiahexa(ethylene oxide) for the Inhibition of Protein Adsorption

June 11, 2002
Author(s)
David J. Vanderah, Gintaras Valincius, Curtis W. Meuse
… monolayers (SAMs) of methyl 1-thiahexa(ethylene oxide) [HS(CH 2 CH 2 O) 6 CH 3 ] on gold were evaluated for … 2 CH 2 O) 6 CH 3 SAMs showed that the 1-thiahexa(ethylene oxide) segment adopts the well ordered 7/2 helical … the folded-chain crystal (FCC) polymorph of poly(ethylene oxide) upon assembly from 95% and 100% ethanol. Less ordered …

Oxides and Oxide Superconductors: Elastic and Related Properties

August 1, 1991
Author(s)
M Lei, H M. Ledbetter
… we studied the elastic and related properties of some oxides and oxide superconductors. The polycrystal elastic constants were … Y 1 Ba 2 Cu 3 O τ (YBCO) were compared with that oxides, especially the perovskites BaTiO 3 and SrTiO 3 , … constants, electron-phonon parameter, Kresin model, oxides, pressure derivative, superconductors …

Oxidation of Soot and Carbon Monoxide in Hydrocarbon Diffusion Flames

January 1, 1994
Author(s)
R. Puri, R J. Santoro, K C. Smyth
… soot particle sizes have been determined in the soot oxidation regions of axisymmetric diffusion flames burning … due to soot radiation losses. Analysis of the soot oxidation rates computed from the primary particle size … at lower temperatures. A comparison of the soot and CO oxidation rates shows that although CO is inherently more …

Faradaic Current Detection During Anodic Oxidation of the H-Passivated p-Si(001) Surface with Controlled Relative Humidity

December 19, 2003
Author(s)
H Kuramochi, F Perez-murano, John A. Dagata, H Yokoyama
… Faradaic current during anodic oxidation is measured over a relative humidity range of … immediately (within a few milliseconds) after applying an oxidation voltage above a threshold value and decreased with … of the fabricated oxide dots. Actual monitoring of the oxidation process by the Faradaic current is demonstrated …

Mechanism of Acetylene Oxidation on the Pt(111) Surface using in situ Fluorescence Yield Near-Edge Spectroscopy

January 10, 2005
Author(s)
D J. Burnett, A M. Gabelnick, J L. Gland, Daniel A. Fischer
… In-situ studies of acetylene oxidation on Pt(111) have been performed using both … temperature-programmed FYNES (TP-FYNES) to study surface oxidation for temperatures up to 600 K and oxygen pressures … tilted slightly up from the Pt(111) surface at 150 K. Oxidation of preadsorbed acetylene on the Pt(111) surface …

Broadband Microwave Signal Dissipation in Nanostructured Copper Oxide at Air/Film Interface

September 17, 2020
Author(s)
Yaw S. Obeng, Papa K. Amoah, Christopher E. Sunday, Jesus Perez, Uros Cvelbar, Martin Kosicek
… be an excellent metrology for applications that use metal oxide as sensing elements. … Microwave, copper oxide, corrosion, bioanalytical analysis … Microwave Signal Dissipation in Nanostructured Copper Oxide at Air/Film Interface …

Atmospheric Oxidation Mechanism of Methyl Pivalate, (CH 3 ) 3 CC(O)OCH 3

August 1, 2001
Author(s)
T J. Wallington, Y Ninomiya, M Mashino, M Kawasaki, Vladimir L. Orkin, Robert E. Huie, Michael J. Kurylo III
… were used to study the Cl atom and OH radical initiated oxidation of (CH 3 ) 3 CC(O)OCH 3 in the presence of NO x in … H-abstraction at the -OCH 3 site. The Cl atom initiated oxidation of (CH 3 ) 3 CC(O)OCH 3 in the presence of 15-600 … 2 , and CH 3 OC(O)O 2 NO 2 products. OH radical initiated oxidation of (CH 3 ) 3 CC(O)OCH 3 in air produces acetone in …

Surface Oxidation Kinetics of SiC Powders in Wet and Dry Air Studied by X-ray Photoelectron Spectroscopy and Bremsstrahlung-Excited Auger Electron Spectroscopy

October 1, 2003
Author(s)
T N. Wittberg, P S. Wang, Stephen M. Hsu
… and dry air to investigate the effect of moisture on the oxidation kinetics. Equations were derived to calculate the … shown to be parabolic. The film thickness formed during oxidation in wet air was larger than that in the dry air for … and heating time. The activation energy for wet oxidation was found to be significantly lower that that for …

Oxidative DNA Damage: Mechanisms, Mutation, and Disease

July 1, 2003
Author(s)
M S. Cooke, M D. Evans, M. Dizdaroglu, J Lunec
… Oxidative DNA damage is an inevitable consequence of cellular … work reviews the basis for the biological significance of oxidative DNA damage, drawing attention to the multiplicity … describing pathological conditions in which levels of oxidative DNA damage have been measured, this review …

Near-theoretical fracture strengths in native and oxidized silicon nanowires

June 21, 2016
Author(s)
Frank W. DelRio, Ryan M. White, Sergiy Krylyuk, Albert Davydov, Lawrence H. Friedman, Robert F. Cook
… In this letter, fracture strengths σf of native and oxidized silicon nanowires (SiNWs) were determined via atomic … to the theoretical strength of Si〈111〉, ≈22 GPa. In the oxidized SiNWs, σf in the SiO2 was comparable to the … bond breaking or atomic-scale defects in the Si, and oxidized SiNWs, in which fracture initiated from surface …

New Degenerate Metal-Oxide Electrodes for Nearly Reversible Direct Electron Transfer to the Redox Proteins

April 1, 2002
Author(s)
Gintaras Valincius, Vytautas Reipa, M P. Mayhew, V L. Vilker
… Heavily doped cadmium tin oxide (CTO) film electrodes were developed for fast electron exchange with redox proteins. The metal oxide films showed nearly reversible electron transfer for … electron exchange was achieved through variation of metal oxide film synthesis parameters that led to an increase of …

Raman Imaging of Surface and Sub-Surface Graphene Oxide in Fiber Reinforced Polymer Nanocomposites

March 1, 2019
Author(s)
Amber D. McCreary, Qi An, Aaron M. Forster, Kunwei Liu, Siyao He, Chris Macosko, Andreas Stein, Angela R. Hight Walker
… The incorporation of nanofillers, such as graphene oxide (GO) into fiber reinforced polymer composites to … method to visualize the microstructure of the graphene oxide near the fiber-resin interface for low loadings (i.e. … microstructure, Raman, graphene oxide, dispersion, fiber reinforced nanocomposites …

Improvements in silicon oxide dielectric loss for superconducting microwave detector circuits

January 24, 2013
Author(s)
Dale Li, Jason Austermann, James A. Beall, Daniel T. Becker, Hsiao-Mei Cho, Anna E. Fox, Nils Halverson, Jason Henning, Gene C. Hilton, Johannes Hubmayr, Jeffrey L. Van Lanen, John P. Nibarger, Michael D. Niemack, Kent D. Irwin
… present a method to tune the dielectric loss for silicon oxide deposited by plasma-enhanced chemical-vapor deposition … with a higher silane-to-oxygen ratio produces silicon oxide films with a lower loss-tangent and a slightly higher … fluctuators. The dielectric loss-tangent of silicon oxide was improved from 6 × 10 -3 for stoichiometric silicon …

Hydroxyl radical is a significant player in oxidative DNA damage in vivo.

June 15, 2021
Author(s)
Miral M. Dizdar, Barry Halliwell, Amitav Adhikary, Michael Dingfelder
… Recent publications have suggested that oxidative DNA damage mediated by hydroxyl radical (.OH) is … hydroxyl radical, DNA damage, oxidative stress … Hydroxyl radical is a significant player in oxidative DNA damage in vivo. …
Displaying 101 - 125 of 2289
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