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Displaying 18801 - 18825 of 73755

High-Relaxivity Superparamagnetic Iron Oxide Nanoworms with Decreased Immune Recognition and Long-Circulating Properties

November 24, 2014
Author(s)
Stephen E. Russek, Guankui Wang, Swetha Inturi, Natalie J. Serkova, Sergey Merkulov, Keith McCrae, Nirmal K. Banda, Dmitri Simberg
One of the core issues of nanotechnology involves masking the foreignness of nanomaterials to enable in vivo longevity and long-term immune evasion. Dextran-coated superparamagnetic iron oxide nanoparticles are very effective magnetic resonance imaging

Measurement of the Electrostatic Edge Effect in Wurtzite GaN Nanowires

November 24, 2014
Author(s)
Alex Henning, Benjamin Klein, Kristine A. Bertness, Paul T. Blanchard, Norman Sanford, Yossi Rosenwaks
The electrostatic effect of the hexagonal corner on the electronic structure in wurtzite GaN nanowires (NWs) was directly measured using Kelvin probe force microscopy (KPFM). By correlating electrostatic simulations with the measured potential difference

Quantum engineering of atomic phase shifts in optical clocks

November 24, 2014
Author(s)
Andrew D. Ludlow, T Zanon-willette, S. Almonacil, E. de Clercq, Ennio Arimondo
Quantum engineering of time-separated Raman laser pulses in three-level systems is presented to produce an ultra-narrow, optical-clock transition free from light shifts and with a significantly reduced sensitivity to laser parameter fluctuations. Based on

Genomic Reference Materials for Clinical Application

November 21, 2014
Author(s)
Justin M. Zook, Marc L. Salit
Reference Materials are well-characterized, homogeneous, and stable samples that can be used to understand measurement performance. The Genome in a Bottle Consortium is developing whole human genome DNA Reference Materials from large batches of DNA

Reference Correlation of the Thermal Conductivity of o-Xylene, m-Xylene, p-Xylene, and Ethylbenzene from the Triple Point to 700 K and Moderate Pressures

November 21, 2014
Author(s)
Sofia K. Mylona, K.D. Antoniadis, Marc J. Assael, Marcia L. Huber, Richard A. Perkins
This paper contains new, representative reference equations for the thermal conductivity of o-, m-, p- xylene and ethylbenzene. The equations are based upon a body of experimental data that has been critically assessed for internal consistency and for

Diode-array UV solar spectroradiometer implementing a digital micromirror device

November 20, 2014
Author(s)
Ari D. Feldman, Tim Burnitt, Geiland Porrovecchio, Marek Smid, Luca Egli, Julian Gr?bner, Katherine M. Nield
The solar ultraviolet spectrum captured by commercially available diode-array spectroradiometers is dominated by stray light from longer wavelengths with higher intensity. The implementation of a digital micromirror device in an array spectroradiometer has

IR-enhanced Si reference detectors for 1-step scale transfers from 300 nm to 1000 nm

November 20, 2014
Author(s)
George P. Eppeldauer, Thomas C. Larason, Jeanne M. Houston, Robert E. Vest, Uwe Arp, Howard W. Yoon
IR-enhanced Si photodiodes have improved radiometric and electronic characteristics as compared to other widely used Si photodiodes and can be used as responsivity standards in the wavelength range from 300 nm to 1000 nm. Their low predicted uncertainty

Characterization of AlgMsp, an Alginate Lyase from Microbulbifer sp. 6532A

November 19, 2014
Author(s)
Jeffrey W. Hudgens, Steven M. Swift, Ryan D. Heselpoth, Patrick M. Bales, Daniel C. Nelson
Alginate is a polysaccharide produced by certain seaweeds and bacteria that consists of mannuronic acid and guluronic acid residues. Seaweed alginate is used in food and industrial chemical processes, while the biosynthesis of bacterial alginate is

Particle Moment Canting in CoFe 2 O 4 Nanoparticles

November 19, 2014
Author(s)
K. Hasz, Y. Ijiri, Kathryn L. Krycka, Julie Borchers, R. A. Booth, S. Oberdick, S. A. Majetich
Polarization-analyzed small-angle neutron scattering methods are used to determine the spin morphology in high crystalline anisotropy, 11 nm diameter CoFe 2O 4 nanoparticle assemblies with randomly oriented easy axes. In moderate to high magnetic fields

Preface

November 19, 2014
Author(s)
Daniel G. Friend, Marcia L. Huber, Neil T. Wright
This is a preface for a special issue of the International Journal of Thermophysics that contains papers presented at the 18th Symposium on Thermophysical Properties.

Electrodermal Activity and Eye Movements Inform the Usability of Passwords

November 18, 2014
Author(s)
Jennifer R. Bergstrom, Kristen K. Greene, David C. Hawkins, Christian Gonzalez
While measuring physiological responses is a common practice in the field of neuroscience, it is rare in the usability arena and in password usability studies, in particular. This is unfortunate, as the use of such implicit measures could complement more

Origin of the Charge Gap in LaMnPO

November 18, 2014
Author(s)
D. E. McNally, J. W. Simonson, K. W. Post, Z. P. Yin, M. Pezzoli, G. J. Smith, V. Leyva, C. Marques, L. DeBeer-Schmitt, A. I. Kolesnikov, Yang Zhao, Jeffrey W. Lynn, D. N. Basov, G. Kotliar, M. C. Aronson
We present inelastic neutron scattering and magnetization measurements of the antiferromagnetic insulator LaMnPO that are well described by a Heisenberg spin model. These measurements are consistent with the presence of two-dimensional magnetic

Structure and Magnetic Properties of the a-NaFeO 2 -Type Honeycomb Compound Na 3 Ni 2 BiO 6

November 15, 2014
Author(s)
Elizabeth M. Seibel, J. H. Roudebush, Hui Wu, Qingzhen Huang, Mazhar N. Ali, Huiwen Ji, R. J. Cava
We present the structure and magnetic properties of Na 3Ni 2BiO 6, which is an ordered variant of the α-NaFeO 2 structure type. This layered compound has a 2:1 ordering of (Ni 2+/Bi 5+)O 6 octahedra within the a-b plane and sodium in octahedra between the

A study of the adhesive foot of the gecko

November 14, 2014
Author(s)
Elmar Kroner, Chelsea S. Davis
In recent years, hundreds of scientific studies have been published regarding gecko-inspired adhesives. The primary reason for this increasing interest lies in the unique properties which are combined in the adhesive system of the gecko: this natural

Broadband Noise Limit in the Photodetection of Ultralow Jitter Optical Pulses

November 14, 2014
Author(s)
Franklyn J. Quinlan, W. Sun, Tara M. Fortier, Jean-Daniel Deschenes, Yang Fu, Scott A. Diddams, Joe Campbell
Applications with optical atomic clocks and precision timing often require the transfer of optical frequency references to the electrical domain with extremely high fidelity. Here we examine the impact of photocarrier scattering and distributed absorption

Hardening Structures to Resist Wildland-Urban (WUI) Fire Exposures

November 14, 2014
Author(s)
Samuel L. Manzello
Wildfires that spread into communities, referred to as Wildland-Urban Interface (WUI) fires, have destroyed communities throughout the world. In the USA, over 46 million homes in 70,000 communities are at risk of WUI fires [1-2]. Historically, fire safety
Displaying 18801 - 18825 of 73755
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