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Displaying 24151 - 24175 of 73726

5754 Aluminum Sheet Deformed Along Bi-Linear Strain Paths

September 29, 2011
Author(s)
Mark A. Iadicola, Lin Hu, Anthony D. Rollett, Timothy J. Foecke
Sheet specimens of aluminum alloy 5754 were deformed along a series of bi-linear, equal-biaxial and uniaxial, strain paths while simultaneously measuring stress-strain behavior. Using the measured crystallographic texture before and after deformation, the

Reexamination of the C2H3+ microwave and infrared spectra

September 29, 2011
Author(s)
Jon T. Hougen, Laurent H. Coudert
The high-resolution infrared spectrum of C2H3 recorded in the 3 CH stretching region (J. Phys. Chem. 99 (1995) 15611-15623) is re-analyzed using an effective internal axis method (IAM) accounting for the large amplitude hydrogen migration motion. The

Service Life Prediction for Sealants

September 29, 2011
Author(s)
Christopher C. White, Donald L. Hunston, Kar T. Tan, James J. Filliben
Previous industry consensus postulated that four elements of the weather: Temperature, Humidity, Ultraviolet Radiation, and Mechanical loading were responsible for the majority of the changes observed in sealants exposed to outdoor weathering. The NIST

Distributed Deployment Algorithms for Improved Coverage in Mobile Sensor Networks

September 28, 2011
Author(s)
Vladimir V. Marbukh, Kamran Sayrafian, Hamid Mahboubi, Kaveh Moezzi, Amir G. Aghdam
In this paper, various sensor deployment strategies are studied for effective coverage in wireless sensor networks. In the proposed algorithms, each sensor discovers the coverage holes within its Voronoi polygons, and then moves in a proper direction to

Impact of Porous Media Grain Size on the Transport of Multiwalled Carbon Nanotubes

September 28, 2011
Author(s)
Nikolai Mattison, Denis O'Carroll, R. K. Rowe, Elijah Petersen
Nanomaterials possess unique physical, electrical and chemical properties which make them attractive for use in a wide range of applications. Through their use and eventual disposal, nanomaterials may ultimately be released into the subsurface environment

Magnetic Excitations in the Geometric Frustrated Multiferroic CuCrO 2

September 28, 2011
Author(s)
M. Frontzek, J. T. Haraldsen, A. Podlesnyak, M. Matsuda, A. D. Christianson, R. S. Fishman, A. S. Sefat, Yiming Qiu, John R. Copley, S. Barilo, S. V. Shiryaev, G. Ehlers
In this paper detailed neutron scattering measurements of the magnetic excitation spectrum of CuCrO6d2^ in the ordered state below T N1 = 24.2 K are presented. The spectra are analyzed using a model Hamiltonian which includes interlayer-exchanged up to the

The Conformation of Poly(ethylene glycol) Chains in Mono-PEGylated Lysozyme and Mono-PEGylated Human Growth Hormone

September 28, 2011
Author(s)
Sheetal S. Pai, Boualem Hammouda, Kunlun Hong, Danilo.C. Pozzo, Todd M. Przybycien, Robert D. Tilton
Covalent conjugation of poly(ethylene glycol) or "PEGylation" has proven an effective strategy to improvement pharmaceutical protein efficacy. Understanding the configuration of conjugated PEG chains is necessary to interpret the effect of PEG conjugation

The NIST Definition of Cloud Computing

September 28, 2011
Author(s)
Peter M. Mell, Timothy Grance
Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with

Formation and transfer of GaAsN nanostructure layers

September 27, 2011
Author(s)
Christopher L. Soles, Hyun W. Ro, A. Wood, N. Estrada, B. Dick, Y. Wang, Micheal Thouless, Rachel Goldman
Nanostructured materials with ultra-small crystallites (approaching the exciton Bohr radius) embedded in a solid-state matrix have great potential for optoelectronic and energy-conversion applications owing to the possibility of invoking quantum effects

Formation of Kinetically Trapped Nanoscopic Unilamellar Vesicles from Metastable Nanodiscs

September 27, 2011
Author(s)
Mu-Ping Nieh, Paul Dolinar, Norbert Kucerka, Steven R. Kline, Lisa M. Debeer-Schmitt, Kenneth C. Littrell, John Katsaras
Zwitterionic long-chain lipids form onion-like structures, commonly known as multilamellar vesicles (MLVs), in aqueous solution. It is also known that the addition of short-chain lipids and charged long-chain lipids to zwitterionic longchain lipids leads

Prototype cantilevers for quantitative lateral force microscopy

September 27, 2011
Author(s)
Mark Reitsma, Richard S. Gates, Lawrence H. Friedman, Robert F. Cook
Prototype cantilevers that enable quantitative micro- to nano-scale surface force measurements using contact-mode atomic force microscopy (AFM) are presented. The “Hammerhead” cantilevers allow precise optical lever system calibrations for cantilever

ThermoData Engine (TDE) Version 6.0 (Pure Compounds, Binary Mixtures, Ternary Mixtures, and Chemical Reactions)

September 27, 2011
Author(s)
Michael D. Frenkel, Robert D. Chirico, Vladimir Diky, Chris Muzny, Andrei F. Kazakov, Joe W. Magee, Ilmutdin M. Abdulagatov, Kenneth Kroenlein, Jeon-Hong Kang
ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept. In the present release, properties for ternary mixtures are calculated through combination of critically evaluated results for the constituent

Enhanced coupling between light and surface plasmons by nanostructured Fabry-Perot resonator

September 26, 2011
Author(s)
Brian S. Dennis, Vladimir Aksyuk, Michael Haftel, Stefan T. Koev, Girsh Blumberg
It is recognized that surface plasmons (SPs),which can be present on particulate, smooth, or corrugated metallic surfaces, have enormous potential in the fields of novel nano-optical and opto-electronic devices, as well as in spectroscopic, biological, and

Managing the Configuration of Information Systems with a Focus on Security

September 26, 2011
Author(s)
Shirley M. Radack
This bulletin summarizes the information presented in NIST Special Publication (SP) 800-128, Guide to Security-Focused Configuration Management of Information Systems. The publication was written by Arnold Johnson, Kelley Dempsey, and Ron Ross of NIST, and

Segmentation and Cell Tracking of Breast Cancer Cells

September 26, 2011
Author(s)
Adele P. Peskin, Daniel J. Hoeppner, Christina H. Stuelten
We describe a new technique to segment and track the cell images of a breast cancer cell line in order to study cell migration and metastasis. Within each image cell phenotypes vary widely, ranging from very bright completely bounded cells to barely

Tare Verification - Ensuring the Accuracy of Tare

September 26, 2011
Author(s)
David A. Sefcik
Article for Weights and Measures Division "Connections" newsletter. Article discusses a suggested procedure for weights and measures officials to verify the accuracy of tare being used by the retailer before an official inspection is done.

ThermoPlan: Experimental Planning and Coverage Evaluation Aid for Thermophysical Property Measurement NIST Standard Reference Database #167

September 26, 2011
Author(s)
Kenneth G. Kroenlein, Vladimir Diky, Chris D. Muzny, Robert D. Chirico, Joe W. Magee, Michael D. Frenkel
This web application provides free and open access for the broader research community to the experimental planning utilities that are incorporated into ThermoData Engine (TDE) [J. Chem. Inf. Model. 2011, 51, 181–194]. TDE provides recommendations for the
Displaying 24151 - 24175 of 73726
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