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Displaying 29151 - 29175 of 143780

Extended Source Interferometry in the Compact Regime

April 4, 2016

Author(s)

Bruno M. Pelle, Gregory W. Hoth, Stefan Riedl, John E. Kitching, Elizabeth A. Donley

We present an atom interferometer based on an expanding cloud of laser-cooled atoms sensitive to rotations along two axes and acceleration along one axis in an effective volume of 1 cm3. We observed spatially resolved fringes by imaging the expanding cloud

In Memoriam: William (Mickey) Haynes (1943  2016)

April 4, 2016

Author(s)

Daniel G. Friend, Thomas J. Bruno, Chris D. Muzny

This is a tribute memorial honoring Mickey Haynes.

Inhibitors of DNA glycosylases as potential therapeutic drugs in cancer

April 4, 2016

Author(s)

M Miral Dizdar, Aaron C. Jacobs, Nathan Donley, Ajit Jadhav, Dorjbal Dorjsuren, David Maloney, Anton Simeonov, Pawel Jaruga, Erdem Coskun, Amanda K. McCullough, R. S. Lloyd

Ionizing radiation and most chemotherapeutic agents kill tumor cells by damaging DNA. The efficacy of DNA-damaging agents may be influenced by increased DNA repair capacity in tumors that results from overexpression of DNA repair proteins. Inhibition of

MIMO-OFDM Transmissions Invoking Space-Time/Frequency Linear Dispersion Codes Subject to Doppler and Delay Spreads

April 4, 2016

Author(s)

Jiayi Zhang, Hamid Gharavi, Bin Hu

Linear dispersion codes (LDC) can support arbitrary configurations of transmit and receive antennas in multiinput multi-output (MIMO) systems. In this paper, we investigate two transmit diversity applications of LDC for orthogonal frequency division

Proposal for calibration of a single-photon counting detector without the need of input photon flux calibration

April 4, 2016

Author(s)

Thomas Gerrits

A method for calibration of single-photon detectors without the need of input photon flux calibration is presented. The method relies on the use of waveguide-coupled single photon detectors and a series of photon-counting measurements using a single-photon

Protein-Style Dynamical Transition in a Non-Biological Polymer and a Non-Aqueous Solvent

April 4, 2016

Author(s)

E. Mamontov, V. K. Sharma, J. M. Borreguero, Madhu Sudan Tyagi

Temperature-dependent onset of apparent anharmonicity in the microscopic dynamics of hydrated proteins and other biomolecules has been known as protein dynamical transition for the last quarter of a century. Using neutron scattering and molecular dynamics

Quantum and Classical Dynamics of BEC in a Large-Period Optical Lattice

April 4, 2016

Author(s)

Ian B. Spielman, Johnny H. Huckans, Bruno Laburthe-Tolra, James V. Porto, William D. Phillips

We experimentally investigate diffraction of a ^u87 Rb Bose-Einstein Condensate from a 1D optical lattice. We use a range of lattice periods and timescales, including those beyond the Raman-Nath limit. We compare the results to quantum mechanical and

Research Highlights: Evaluating nanomaterial behavior and risks for the development of sustainable in situ remediation

April 4, 2016

Author(s)

John M. Pettibone, Stacey M. Louie

Nanomaterials are currently being used for in situ remediation of soils and groundwater. However, their improvement and continued use for a sustainable approach requires a more complete understanding of the ecological impact, which should include the

The 2015 TWSTFT calibration for UTC and related time links

April 4, 2016

Author(s)

Zhiheng Jiang, Dirk Piester, Christian Schlunegger, Erik Dierks, Javier Galindo, Demetrios Matsakis, Victor S. Zhang

Two-Way Satellite Time and Frequency Transfer (TWSTFT or TW) is one of the primary time transfer techniques for UTC generation. Although it has expensive financial requirements it provides highly accurate calibration, and provides both robustness and

Responding to the Challenges of Recruitment, Retention, and Succession at the Information Services Office of the National Institute of Standards and Technology

April 3, 2016

Author(s)

Mary D. Coraggio, Rosa Liu

This paper is based on a presentation made at the American Library Association (ALA) Federal and at the Armed Forces Libraries Round Table in Las Vegas, June 29, 2014. The paper covers National Institute of Standards and Technologys (NIST) Alternative

Cyber-Physical Systems: A Framework for Dynamic Traffic Light Control at Road Intersections

April 2, 2016

Author(s)

Ossama M. Younis, Nader Moayeri

Traffic control at road intersections is based on traffic lights. The control mechanism typically used for traffic lights operates based on a periodic schedule to change the light (red/yellow/green). In many cases, a different schedule is used in late

Development of a Comprehensive Steroid Hormone Screening Method using Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)

April 2, 2016

Author(s)

Ashley S. Boggs-Russell, John Bowden, Louis J. Guillette, John R. Kucklick

The ability to monitor endocrine pathways is often limited by techniques that use indirect measurement or single-hormone/class analysis. As our knowledge of the interconnections of the endocrine system grows, there is a need to develop highly specific

The Need for Realism when Simulating Network Congestion

April 2, 2016

Author(s)

Kevin L. Mills, Christopher E. Dabrowski

Many researchers use simulation to investigate network congestion, often finding congestion spread can be modeled as percolation, spreading slowly under increasing load until a critical point, then spreading quickly through the network. The researchers

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