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NIST Authors in Bold

Displaying 8851 - 8875 of 13224

Antenna Radiation Pattern Measurements in Reverberation Chamber

November 3, 2018
Author(s)
Audrey K. Puls
… radiation pattern measurements are typically performed in anechoic chambers which are expensive to buy and … radiation pattern measurement. Two horn antennas are used in all cases operating between 1 GHz and 18 GHz. Good agreement is found between our measurements taken in a reverberation chamber, and those taken by the …

Challenges in measuring spherical geometry using terrestrial laser scanners

November 1, 2017
Author(s)
Balasubramanian Muralikrishnan, Prem K. Rachakonda, Katharine M. Shilling, Vincent D. Lee, Daniel S. Sawyer, Geraldine S. Cheok, Luc Cournoyer
… Terrestrial laser scanners (TLS) measure 3D coordinates in a scene by recording the range, the azimuth angle, and … points on target surfaces. They are increasingly used in a variety of applications, including manufacturing and civil infrastructure systems. However, the …

Nanomaterials in the aquatic environment: An EU-USA perspective on the status of ecotoxicity testing, research priorities and challenges ahead

June 19, 2016
Author(s)
Selck Henriette, Richard Handy, Teresa Fernandes, Stephen Klaine, Elijah Petersen
… The US-EU Community of Research (CoR) was established in 2012 to provide a platform for scientists to develop a … an overview of the state-of-the-art of nanomaterials (NMs) in the aquatic environment by addressing different research … NMs, as well as NMs released from consumer products in addressing the following overarching research topics: i) …

Componentization in the Systems Modeling Language

November 20, 2013
Author(s)
Conrad E. Bock
… This paper describes new capabilities in the Systems Modeling Language that reduce the complexity … built to meet the specifications, an approach typical in specifying semantics of formal languages. The paper is … of the SysML models generally, for example, during manufacturing and other stages of the product lifecycle. …

Related-Key Slide Attacks on Block Ciphers with Secret Components

September 18, 2013
Author(s)
Meltem Sonmez Turan
… area/power/energy requirements for constrained devices. In this paper, we focus on the lightweight encryption algorithm specified and approved in NRS 009-6-7:2002 by Electricity Suppliers Liaison Committee to be used with tokens in prepayment electricity dispensing systems in South Africa. …

Effect of Electrical Discharge Machining (EDM) on Miniaturized Charpy Test Results

December 11, 2012
Author(s)
Enrico Lucon
… Electrical Discharge Machining (EDM) is a manufacturing process whereby a desired shape is obtained … a recast layer on the surface of the workpiece, which in carbon steels is typically harder and more brittle than … by microcracks. This type of damage, particularly in the notch region of a steel specimen, can adversely affect …

Standards for the Optical Detection of Protein Particulates

January 23, 2012
Author(s)
Dean C. Ripple, Michael J. Carrier, Joshua R. Wayment
… Particulates in protein therapeutics, composed of agglomerated protein monomers, may cause an immunogenic response in patients. Consequently, industry and the FDA desire more … counting and characterizing particulates. Unlike likely manufacturing impurities, protein particulates have a …

Marketplace Assessment - Metric Labeling on Packages in Retail Stores

December 14, 2009
Author(s)
Elizabeth J. Benham
… (UPLR) are permitted to display metric labeling. In an effort to characterize current U.S. marketplace … contents labeling of at least 1137 packages was examined in 19 retail stores, including those that sell food, home and … requirements. The majority of the parties responsible for manufacturing or distributing 61 % of the metric products …

Nanotube Length Distributions Measured from Suspension by Electrospray-Differential Mobility Analysis

December 4, 2009
Author(s)
Leonard F. Pease III, De-Hao D. Tsai, Jeffrey A. Fagan, Barry J. Bauer, Rebecca A. Zangmeister, Michael J. Tarlov, Michael R. Zachariah
… to obtain complete length distributions of SWCNT dispersed in solution, sampling it with electrospray ionization. … as an advantageous technique to measure SWCNTs <250 nm in length. Of particular note is that these nanotubes were … compatibility with biological and high-throughput manufacturing environments, and for their potential …

Graphical Evaluation of Certainty of Smokeless PowderPopulation Association Using Computer-Intensive Statistics

October 16, 2008
Author(s)
William MacCrehan, J D. Secl, David L. Duewer
… the questioned measurement(s) into the known population. In this study, compositional measurements of commercial … normal distribution of all cartridge measurements in each of the ammunition boxes. The Monte Carlo Bootstrap … statistics was used to evaluate the two data sets. In MCB analysis, finite measurement sets are resampled to …

Reference Material 8785: Air Particulate Matter on Filter Media

October 16, 2008
Author(s)
George A. Klouda, James J. Filliben, H J. Parish, J C. Chow, J Watson, R Cary
… Matter on Filter Media is intended primarily for use in the evaluation of analytical methods used to characterize … aerodynamic diameter) of SRM 1649a Urban Dust resuspended in air and filtered onto quartz-fiber filter. RM 8785 also …

Junction-Isolated Electrical Test Structures for Critical Dimension Calibration Standards

March 31, 2003
Author(s)
Richard A. Allen, Michael W. Cresswell, Loren W. Linholm
… for use as critical dimension (CD) calibration standards. In earlier work, these structures have been electrically … including minimal susceptibility to charging when imaged in a CD scanning electron microscope (CDSEM), better edge … to verify that the features meet uniformity requirements. In this paper, we describe results for determining the …

A Core Product Model for Representing Design Information

October 1, 2002
Author(s)
Steven J. Fenves
… the engineering context that is most commonly shared in product development activities. The core model focuses on … core model may eventually serve as a precursor for STEP in the lifecycle of a product, capturing all information … is firmed up, approved and committed to purchasing or manufacturing. Aspects of extensions of the model in these …

Moving the Pulsed Heating Technique Beyond Monolithic Specimens: Experiments with Coated Wires

August 1, 2001
Author(s)
Daniel Josell, D Basak, J L. McClure, Ursula R. Kattner, Maureen E. Williams, William J. Boettinger, M Rappaz
… of electric current have a thirty year history at NIST. In recent years, efforts have been made to move beyond the … the costly, black-body geometry specimens previously used. In addition, significant progress has been made toward … geometries for studying materials that cannot be studied in monolithic form because, for example, they are too …

Sprinkler, Smoke and Heat Vent, Draft Curtain Interaction: Large Scale Experiments and Model Development. International Fire Sprinkler-Smoke and Heat Vent-Draft Curtain Fire Test Project (NISTIR 6196-1)

September 1, 1998
Author(s)
Kevin B. McGrattan, Anthony P. Hamins, D W. Stroup
… roof vents and draft curtains of the type typically found in large warehouses, manufacturing facilities, and warehouse-like retail stores. … planned and conducted thirty-nine large scale fire tests in the Large Scale Fire Test Facility at Underwriters …

A Nonlinear Fluid Standard Reference Material: Progress Report

May 1, 1998
Author(s)
Carl R. Schultesiz, G B. McKenna
… NIST is in the process of developing a new Standard Reference … first, to help equipment manufacturers and researchers in different laboratories to better understand the inherent lab-to-lab variability in their measurements and consequently help reduce these; and …

In Situ Thermography During Laser Powder Bed Fusion of a Nickel Superalloy 625 Artifact with Various Overhangs and Supports

March 12, 2021
Author(s)
Benjamin A. Molnar, Jarred C. Heigel, Eric P. Whitenton
… and associated measurement files available for download in the dataset "In Situ Thermography During Laser Powder Bed Fusion of a … degrees of overhangs, from 5 degrees to 85 degrees, in increments of 10 degrees. The artifact geometry and … 3D build, Additive manufacturing, IN625, nickel super alloy 625, powder bed …
Displaying 8851 - 8875 of 13224
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