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Displaying 1451 - 1475 of 2289

Effects of Thermal Aging on Molar Mass of Ultra-High Molar Mass Polyethylene Fibers

March 24, 2022
Author(s)
Zois Tsinas, Sara Orski, Viviana Bentley, Lorelis Gonzalez-Lopez, Mohamad Al-Sheikhly, Amanda L. Forster
Ultra-high molar mass polyethylene (UHMMPE) is commonly used for ballistic-resistant body armor applications due to the superior strength of the fibers fabricated from this material combined with its low density. However, polymeric materials are

Self-terminating Electrodeposition of Pt on WC Electrocatalysts

May 10, 2021
Author(s)
Thomas P. Moffat
Self-terminating electrochemical deposition is used to grow Pt nanoparticles on tungsten monocarbide (WC) from a pH 4 electrolyte containing 3 mmol/L K2PtCl4 - 0.5 mol/L NaCl. An unconventional potentiodynamic deposition program is used where nucleation is

Production, Purification and Characterization of 15N-Labeled DNA Repair Proteins as Internal Standards for Mass Spectrometric Measurements

July 26, 2015
Author(s)
Prasad T. Reddy, Pawel Jaruga, Bryant C. Nelson, Mark Lowenthal, Ann-Sofie Jemth, Olga Loseva, Erdem Coskun, Thomas Helleday, Miral M. Dizdar
Oxidatively induced DNA damage is caused in living organisms by a variety of damaging agents, resulting in the formation of a multiplicity of lesions, which are mutagenic and cytotoxic. Unless repaired by DNA repair mechanisms before DNA replication, DNA

Electromagnetic Metrology on Concrete and Corrosion

June 1, 2011
Author(s)
Sung Kim, Jack T. Surek, James R. Baker-Jarvis
… and magnetic responses of concrete and iron-bearing-oxide corrosion specimens as S-parameters from 45 MHz to 12 … ground corrosion samples and commercially available iron-oxide powders (hematite, maghemite, goethite, and magnetite) …

Unusual Expansion and Contraction in Ultrathin Glassy Polycarbonate Films

April 1, 2004
Author(s)
Christopher L. Soles, Jack F. Douglas, Ronald L. Jones, Wen-Li Wu
… surface of silicon as opposed to the hydrophilic native oxide (which PMMA favors). The apparent glass transition … C are encountered in films thinner than 100 on the native oxide substrate. A critical length scale of 100 for …

Enclosure Effects on Flame Spread Over Solid Fuels in Microgravity

September 1, 2002
Author(s)
Y N. Nakamura, Takashi Kashiwagi, Kevin B. McGrattan
Enclosure effects on the transition from localized ignition to subsequent flame spread over a thermally-thin solid fuel in microgravity are investigated numerically solving the low Mach number time-dependent Navier-Stokes equations. The numerical model

Property-Performance Studies of SnO 2 Sensing Films Using Micromachined Arrays

February 22, 1999
Author(s)
R M. Walton, Richard E. Cavicchi, Stephen Semancik
… are used for depositing catalytic metal/semiconducting oxide sensing films on microhotplates of four-element arrays. … annealing changes the morphology of metal catalysts on oxide grains to produce islands or porous structures that …

Heat Release Mechanisms in Inhibited Laminar Counterflow Flames (Conference)

November 6, 1994
Author(s)
Ki Y. Lee, Don J. Cha, I K. Puri, Anthony Hamins
Both the chemical kinetic and thermal channels of inhibition must be simultaneously characterized in order to understand the effectiveness of chemical agents on flame stability. However, due to the participation of inhibitors in flame chemistry, it is

Aerosol Dynamic Processes of Soot Aggregates in a Laminar Ethene Diffusion Flame

February 1, 1993
Author(s)
R Puri, T F. Richardson, R J. Santoro, R A. Dobbins
Laser scattering/extinction tests on a coannular ethene diffusion flame were analyzed using cross sections for polydisperse aggregates. Using an improved experimental arrangement that allowed simultaneous measurement of light scattering at multiple angles

Model for the Bipolar Amplification Effect

December 10, 2021
Author(s)
James Ashton, Stephen Moxim, Ashton Purcell, Patrick Lenahan, Jason Ryan
… performance-limiting interface defect structure in metal-oxidesemiconductor field-effect transistors (MOSFETs). …

Kinetic Mechanism of 2,3,3,3-Tetrafluoropropene (HFO-1234yf) Combustion

July 16, 2018
Author(s)
Valeri I. Babushok, Gregory T. Linteris
A kinetic model for 2,3,3,3-tetrafluoropropene (HFO-1234yf) high temperature oxidation and combustion is proposed. It is combined with the GRI-Mech-3.0 model, with the previously developed model for 2-bromo-3,3,3-trifluoropropene (2-BTP), and with the NIST

Floating Zone Growth of a-Na 0.90 MnO 2 Single Crystals

December 16, 2016
Author(s)
Rebecca Dally, Raphaele Clement, Robin Chisnell, Stephanie Taylor, Megan Butala, Vicky Doan-Nguyen, Mahalingam Balasubramanian, Jeffrey W. Lynn, Clare P. Grey, Stephen D. Wilson
… diffraction measurements. As a layered transition metal oxide with large ionic mobility and strong correlation …

Reduced microwave loss in trenched superconducting coplanar waveguides

February 20, 2012
Author(s)
Michael R. Vissers, Jeffrey S. Kline, Jiansong Gao, David S. Wisbey, David P. Pappas
Low loss TiN resonators were fabricated on 3" intrinsic Si substrates. By exploiting the etch rate anisotropy in a parallel plate reactive ion etch, otherwise identical coplanar waveguides with gaps of varying depth were created in the same TiN film within
Displaying 1451 - 1475 of 2289
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