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Search Publications

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Displaying 5176 - 5200 of 73697

Composition-based Reduction of Damping in Fe1-xVx (50nm) Thin Films

October 12, 2021
Author(s)
L Cheng, H Song, J O. Rantschler, Robert McMichael, William E. Bailey
The reduction of GHz damping a is a critical and unaddressed need in ferromagnetic materials development. Smith has predicted that the signal-to-noise ratios of nanoscale / Ghz spin electronic sensors will be inversely dependent on the free magnetic layer

Computations of Particle Surface Characteristics Using Optical and X-Ray CT Images

October 12, 2021
Author(s)
E Masad, S Saadeh, T Al-Rousan, Edward Garboczi, D Little
The description of particle surface characteristics is of interest in many disciplines in science and engineering such as powder technology, geology, soil science, and infrastructure materials. Consequently, there is a need to develop methods to quantify

Conformational Isomerism in 1-Heptanal

October 12, 2021
Author(s)
J M. Fisher, L H. Xu, R D. Suenram, Brooks H. Pate, K O. Douglass
The rotational spectrum of 1-heptanal has been recorded over the 10 GHz to 22 GHz region using a pulsed-molecular-beam, Fourier transform microwave spectrometer. The spectrum has been analyzed using the jb95 spectral analysis program. The spectra of

Consensus Characterization of 16 FMR1 Reference Materials: A Consortium Study by the Fragile Xperts

October 12, 2021
Author(s)
Jean A. Wilson, Victoria M. Pratt, Amit Phansalkar, Kasinathan Muralidharan, W E. Highsmith, J C. Beck, Scott Bridgeman, Ebony M. Courtney, Lidia Epp, Andrea Ferreira-Gonzalez, Nick L. Hjelm, Leonard Holtegaard, Mohamed A. Jama, J P. Jakupciak, Monique A. Johnson, Paul Labrousse, Elaine Lyon, Thomas W. Prior, C D. Richards, Kristy L. Richie, Benjamin B. Roa, Elizabeth M. Rohlfs, Tina Sellers, Stephanie Sherman, Karen M. Siegrist, Lawrence M. Silverman, Joanna Wiszniewska, Lisa Kalman
Fragile X (FX) syndrome is caused by expansion of a (CGG)n repeat in the FMR1 gene, occurs in approximately 1:3500 males and causes mental retardation/behavioral problems. Smaller (CGG)n repeat expansions in FMR1, premutations, are associated with

Consistent Estimation of Poisson Intensity in the Presence of Dead Time

October 12, 2021
Author(s)
S X. He, Grace L. Yang, K T. fang, J F. Widmann
Phase Doppler Interferometry (PDI) is a non-intrusive technique frequently used to obtain information about spray characteristics. Understanding spray characteristics is of critical importance in many areas of science, including liquid fuel spray

Content Migration: From Paper to XML Documents

October 12, 2021
Author(s)
K H. Lee, Y C. Choy, S B. Cho, Xiao Tang, V R. Mccrary
¿¿¿With the widespread of XML documents on the Web, there is a growing interest in transforming paper-based documents into XML representations. In this paper, we present a syntactic method for logical structure analysis of documents with multiple pages and

Control of the Frequency Comb From a Mode-Locked Erbium Doped Fiber Laser

October 12, 2021
Author(s)
J Rauschenberger, T M. Fortier, D J. Jones, Jun Ye, Steven T. Cundiff
We show that a stretched-pulse mode-locked fiber laser produces a well-defined frequency comb, providing a compact source of frequency combs and allowing comb-based optical frequency metrology to be extended into the 1.55 m region. This is achieved by

Controllable Catastrophe X-Ray Focusing

October 12, 2021
Author(s)
S M. Durbin, Terrence J. Jach, S. Kim, J. A. Aust
The interaction of waves with inhomogeneous media leads to the natural focusing of light, the channelling of waves into stable caustics such as the pattern of sunlight seen at the bottom of a rippled swimming pool. These effects are also found in surface

Coupling Grain Boundary Motion to Shear Deformation

October 12, 2021
Author(s)
Yuri Mishin, A Suzuki, John W. Cahn
Molecular dynamics (MD) simulations confirm that normal grain boundary (GB) motion must often be coupled to tangential translation of grains and will then produce shear deformation of the lattice traversed by the GB. Conversely, shear stresses applied to a

Creation of Macroscopic Superposition States from Arrays of Bose-Einstein Condensates

October 12, 2021
Author(s)
J A. Dunningham, Karen G. Burnett, R Roth, William D. Phillips
We consider how macroscopic quantum superpositions may be created from arrays of Bose-Einstein condensates. We study a system of three condensates in Fock states, all with the same number of atoms and show that this has the form of a highly entangled

Critical Behavior of a Strain Percolatin Model for Metals with Unstable Locks

October 12, 2021
Author(s)
Y Shim, Lyle E. Levine, R M. Thomson, M Savage
Using a strain percolatin model proposed for the transport of mobile dislocations through a dislocation cell structure in a deforming metal, we have further explored the critical behavior of the model when there are some unstable locks present in the

Critical Size for Shape Transition and Size Evolution of Ge Islands on Si (100)

October 12, 2021
Author(s)
B Liu, C L. Berrie, J Bright, S R. Leone
Atomic force microscopy is used to study the molecular beam epitaxy of Ge on Si(100) at different growth temperatures and coverages. Forgrowth temperatures ranging from 750 K to 900 K, at the early coarsening stage, an island shape transition is observed

Cross Sections for Ionization of Mo and Mo+ by Electron Impact

October 12, 2021
Author(s)
D H. Kwon, Y J. Rhee, Yong Sik Kim
Theoretical cross sections for electron-impact ionization of the neutral Mo Atom and Mo+ ion are reported. Both Mo and Mo+ have many metastable levels near the ground level. We calculated ionization cross sections from the ground and two lowest metastable

Cruising Through Molecular Bound-State-Manifolds With Radio-Frequency

October 12, 2021
Author(s)
F Lang, P Van der Straten, B Brandstatter, G Thalhammer, K Winkler, Paul S. Julienne, R Grimm, J Hecker Denschlag
The emerging field of ultracold molecules with their rich internal structure is currently attracting a lot of interest. Various methods have been developed to produce ultracold molecules in pre-set quantum states. For future experiments it will be

Crystal Structure of Escherichia coli Protein ybgI

October 12, 2021
Author(s)
Jane E. Ladner, G Obmolova, A Teplyakov, P P. Khil, R D. Camerini-Otero, G L. Gilliland
The crystal structure determination of E. coli protein ybgI was undertaken as part of a structural genomics effort (http://s2f.carb.nist.gov) in order to assist with the functional assignment of the protein. The protein encoded by the ybgI gene of

Crystal Structure of the Escherichia Coli CobW Protein Suggests a GTP-Dependent Regulatory Function in the Cobalamin Synthesis Pathway

October 12, 2021
Author(s)
P P. Khil, R D. Camerini-Otero, A Teplyakov, G Obmolova, A J. Howard, G L. Gilliland
The crystal structure determination of E. coli CobW was undertaken as part of a structural genomics effort (http://s2f.carb.nist.gov) in order to assist with the functional assignment of the protein. The CobW protein from E. coli was cloned, expressed, and

Cure Monitoring of Hydrosilation-Curable Silicones by Fluorescence Spectroscopy

October 12, 2021
Author(s)
Y Hotta, K Komatsu, Francis W. Wang
Cure monitoring of hydrosilation is needed to control the fabrication of medical devices from hydrosilation-curable silicones. The fluorescence spectrum of a probe with one or more unsaturated bonds in its chromophore changes when the probe reacts with a
Displaying 5176 - 5200 of 73697
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