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Displaying 17951 - 17975 of 74223

Frequency-tunable Superconducting Resonators via Nonlinear Kinetic Inductance

August 13, 2015
Author(s)
Michael Vissers, Johannes Hubmayr, Jiansong Gao, Martin Sandberg, Saptarshi Chaudhuri, Clint Bockstiegel
We have designed, fabricated and tested a frequency-tunable high-Q superconducting resonator made from niobium titanium nitride film. The frequency tunability is achieved by injecting a DC current through a special current-directing circuit into the

Implementing and Managing Policy Rules in Attribute Based Access Control

August 13, 2015
Author(s)
Chung Tong Hu, David F. Ferraiolo, David R. Kuhn, Raghu N. Kacker, Yu Lei
Attribute Based Access Control (ABAC) is a popular approach to enterprise-wide access control that provides flexibility suitable for today's dynamic distributed systems. ABAC controls access to objects by evaluating policy rules against the attributes of

Physical implementation of coherently-coupled oscillator networks

August 13, 2015
Author(s)
Matthew R. Pufall, William H. Rippard, Gyorgy Csaba, Wolfgang Porod, George Bourianoff, Dmitri Nikonov
We present a combined experimental and simulation study of the physical implementation of coherently coupled oscillator networks composed of spin-torque oscillators (STOs). Based on published works and on our recent experiments, we review the behavior of

Uncoordinated Scheduling Strategies for BAN-to-BAN Interference Mitigation

August 13, 2015
Author(s)
Kamran Sayrafian, Martina Barbi, Mehdi Alasti
A Body Area Network (BAN) is a radio standard for wireless connectivity of wearable and implantable sensors located inside or in close proximity to the human body. Medical and some other applications impose stringent constraints on battery powered BAN

A Flexible Microporous Hydrogen-Bonded Organic Framework for Gas Sorption and Separation

August 12, 2015
Author(s)
Hailong Wang, Bin Li, Hui Wu, Tong-Liang Hu, Zizhu Yao, Wei Zhou, Shengchang Xiang, Banglin Chen
A microporous three-dimensional hydrogen-bonded organic framework (HOF-5) has been constructed from a new organic linker 4,4'r", r"'(2,4-diamino-1,3,5-triazin-6-yl)tetraphenylethene. Activated HOF-4a exhibits a stepwise N 2 adsorption isotherm at 77 K

Additive Manufacturing Round Robin Protocols: A Pilot Study

August 12, 2015
Author(s)
Shawn P. Moylan, Joshua Land, Antonio M. Possolo
As the number of users of additive manufacturing (AM) steadily increases, and considering their demand for material and process specifications, the need for standard protocols for round robin studies is increasing accordingly. Researchers at the National

Tolerance Specification and Related Issues for Additively Manufactured Products

August 12, 2015
Author(s)
Gaurav Ameta, Robert R. Lipman, Paul W. Witherell, Shawn P. Moylan
Additive manufacturing (AM) has gained increased attention in the last decade as a versatile manufacturing process for customized products. AM process can create complex free-form shapes, internal cavities and lattices, which are either not feasible or

Field-based simulations of nanostructured polyelectrolyte gels

August 11, 2015
Author(s)
Debra J. Audus, Glenn Fredrickson
Nanostructured, responsive hydrogels composed of oppositely charged triblock copolymers with charged end-blocks and neutral, hydrophilic mid-blocks in aqueous solution were recently discovered. Due to electrostatic interactions, the end-blocks microphase

Stable Interface Formation between TiS 2 and LiBH 4 in Bulk-Type All-Solid-State Lithium Batteries

August 11, 2015
Author(s)
Atsushi Unemoto, Tamio Ikeshoji, Syun Yasaku, Motoaki Matsuo, Vitalie Stavila, Terrence J. Udovic, Shin-Ichi Orimo
In this study, we assembled a bulk-type all-solid-state batter comprised of a TiS 2 positive electrode, LiBH 4 electrolyte, and Li negative electrode. Our battery retained high capacity over 300 discharge-charge cycles when operated at 393 K and 0.2 C. The

Heterogeneity and length scale effects in PEG-based hydrogels

August 10, 2015
Author(s)
Brian G. Bush, Jenna M. Shapiro, Frank W. DelRio, Robert F. Cook, Michelle L. Oyen
Colloidal-probe spherical indentation load-relaxation experiments are conducted on poly(ethylene glycol) (PEG) hydrogel materials to quantify the steady-state mechanical properties and time-dependent transport properties in a single experiment. A probe

Macroscopic Subkelvin Refrigerator Employing Superconducting Tunnel Junctions

August 10, 2015
Author(s)
Xiaohang NMN Zhang, Peter J. Lowell, Brandon L. Wilson, Galen C. O'Neil, Joel N. Ullom
In this paper, we demonstrate a general-purpose macroscopic refrigerator based on the transport of hot electrons through superconducting tunnel junctions. Our refrigerator is intended to provide access to temperatures below those accessible using pumped

Molecular-Based Virial Coefficients of CO2-H2O Mixtures

August 7, 2015
Author(s)
Allan H. Harvey, Andrew J. Schultz, David A. Kofke
We report values of the second and third virial coefficients for the system CO2-H2O, calculated as a function of temperature via numerical evaluation of cluster integrals that define the coefficients in terms of the intermolecular potential energy

Representation and Validation of Liquid Densities for Pure Compounds and Mixtures

August 7, 2015
Author(s)
Vladimir Diky, John P. O'Connell, Jens Abildskov, Kenneth G. Kroenlein, Michael D. Frenkel
Reliable correlation and prediction of liquid densities are important for designing chemical processes at normal and elevated pressures. We have extended a corresponding states model from molecular theory to yield a robust method for quality testing of

Small Molecule Inhibitors of 8-Oxoguanine DNA Glycosylase-1 (OGG1)

August 7, 2015
Author(s)
Pawel Jaruga, Erdem Coskun, M Miral Dizdar, Nathan Donley, Stephen Lloyd, Amanda McCullough
ABSTRACT The DNA base excision repair (BER) pathway, which utilizes DNA glycosylases to initiate repair of specific DNA lesions, is the major pathway for the repair of DNA damage induced by oxidation, alkylation, and deamination. Early results from

Stabilization of Cubic Sr 2 FeMoO 6 through Topochemical Reduction

August 7, 2015
Author(s)
Daniel D. Taylor, Nathaniel J. Schreiber, Craig Brown, Angel M. Arevalo-Lopez, Efrain E. Rodriguez
Sr 2FeMoO 6 has been extensively studied for application in spintronic devices. Through the topochemical deintercalation of the oxygen anions, the high temperature cubic phase can be stabilized at room temperature while leaving the magnetic ordering intact
Displaying 17951 - 17975 of 74223
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