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Displaying 8826 - 8850 of 13224

Minimum Security Requirements for Multi-User Operating Systems

March 1, 1993
Author(s)
David F. Ferraiolo, N Lynch, Patricia R. Toth
… availability of these resources. The MSR presented in this document form the basis for the commercially oriented … in Volume II of the draft Federal Criteria for Information Technology Security document (known as the Federal Criteria). … Criteria Project under National Institute of Standards and Technology (NIST) leadership with a high level of private …

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 …

A low-cost ultrasonic absorption spectrometer mainly using off-the-shelf parts

March 11, 2025
Author(s)
Michelle Crouse, Malgorzata Musial, Jason Widegren, Jacob Pawlik, Bryan Bosworth, Nathan Orloff, Aaron Hagerstrom, Angela Stelson, Robert Lirette
… research into chemical engineering and pharmaceutical manufacturing processes. The only commercial ultrasonic … measurements, we observed a relaxation peak near 1 MHz in scandium sulfate, which was reported once before using a …

Far-UVC: The impact of optical filters on real-world deployment

July 20, 2024
Author(s)
C Cameron Miller, Ewan Eadie, Paul O'Mahoney, Sally Ibbotson, Kenneth Wood
… In 2015, a study showed that Krypton-Chloride (KrCl) excimer … lamps could induce erythema and basal layer DNA damage in human skin. Later studies found that filtering out longer wavelength emissions from these lamps resulted in no acute skin effects. However, there is a limited …

Rapid chemical screening of microplastics and nanoplastics by thermal desorption and pyrolysis mass spectrometry with unsupervised fuzzy clustering

August 11, 2023
Author(s)
Thomas P. Forbes, John Pettibone, Eric S. Windsor, Joseph M. Conny, Robert A. Fletcher
… are critical to the concerns over plastic accumulation in the environment. Chemically and physically transient MNP … took advantage of Kendrick mass defect analysis, in-source collision-induced dissociation, and advancements in machine learning approaches for the data analysis of …

Binder Removal from Ceramic Stereolithography Green Bodies: A Neutron Imaging and Thermal Analysis Study

March 16, 2023
Author(s)
Eoin McAleer, M Alazzawi, C Hwang, Jacob LaManna, David Jacobson, R.A. Haber, E. Koray Akdogan
… of ceramics remains one of the most powerful additive manufacturing routes for the creation of intricate ceramic … composition and debinding atmosphere to be crucial factors in improving debinding performance. Here, we use a … 1 °C/min up to 500 °C, vacuum atmosphere appears to result in a greater number of cracks as compared to the use of …

Type-B uncertainty analysis of gravity-based determinations of triaxial-accelerometer properties by simulation of measurement errors

January 4, 2022
Author(s)
Jon Geist, Michael Gaitan
… we have described previously. As well as imperfections in the calibration system, we simulate imperfect … non-identical sensitivity of the individual accelerometers in an otherwise perfect triaxial accelerometer, but leave … sensitivity-matrix errors are caused by imperfections in the construction and installation of the accelerometer …

Selective Ethane/Ethylene Separation in a Robust Microporous Hydrogen-Bonded Organic Framework

January 8, 2020
Author(s)
Xu Zhang, Libo Li, Jia-Xin Wang, Hui-Min Wen, Rajamani Krishna, Hui Wu, Wei Zhou, Zhong-Ning Chen, Bin Li, Guodong Qian, Banglin Chen
… (C 2 H 6 ) from ethylene (C 2 H 4 ) is of prime importance in the production of polymergrade C 2 H 4 for industrial manufacturing. It is very challenging and still remains … to fully realize efficient C 2 H 6 /C 2 H 4 separation in the emerging hydrogen-bonded organic frameworks (HOFs) due …

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 …
Displaying 8826 - 8850 of 13224
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