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Displaying 16601 - 16625 of 17291

The Importance of Branch Placement on the Dilute Solution Properties of Comb-like Macromolecules

June 12, 2025

Author(s)

Robert Ivancic, Chase Thompson, Devin Golla, Bintou Koroma, Jack Douglas, Sara Orski, Debra Audus

Branch density and length substantially impact the properties of comb-like polymers. Scientists often use the dilute solution properties of these materials to quantify their architecture. As branch spacing decreases and branch length increases at a fixed

A Fully Registered In-Situ and Ex-Situ Dataset for Metal Powder Bed Fusion Additive Manufacturing: Data Processing, Feature Extraction, Registration, and Uncertainties

May 8, 2025

Author(s)

Zhuo Yang, Yan Lu, Ho Yeung, Brandon Lane, Nicole Van Handel

… "Overhang Part X4," generated at the National Institute of Standards and Technology. The two datasets —one for process …

Pyrolysis-GC/MS differentiates polyesters and detects additives for improved monitoring of textile labeling accuracy and plastic pollution

April 2, 2025

Author(s)

Josh Forakis, Jennifer Lynch

… We analyzed four scientific-grade polyester reference standards, 52 manufacturer-grade polyester fibers or pellets, …

Practical Techniques for Elastic Secondary Stiffness Design to Provide Seismic Stability and Enhance Seismic Resilience

December 2, 2024

Author(s)

Larry Fahnestock, Shitao Shi, Rafael Sabelli, Matthew Speicher

… although this benefit is not recognized in current standards and is thus not typically considered in design. …

Small-Angle Scattering and Dark-Field Imaging for Validation of a New Neutron Far-Field Interferometer

December 1, 2024

Author(s)

Caitlyn M. Wolf, Peter Bajcsy, Wei-Ren Chen, Robert Dalgliesh, Michael Daugherty, Liliana de Campo, Fumiaki Funama, Lilin He, Michael Huber, David Jacobson, Paul A. Kienzle, Youngju Kim, Hubert King, Nikolai Klimov, Jacob LaManna, Fankang Li, Alexander Long, Ryan Murphy, Gergely Nagy, Sarah M. Robinson, Pushkar Sathe, Gregory N. Smith, Anna Sokolova, Sven Vogel, Erik Watkins, Yuxuan Zhang, Daniel Hussey, Kathleen Weigandt

… of multiple length scales. At the National Institute of Standards and Technology, a new neutron far-field …

Speed of Sound Measurements of R-1130(E) and an Azeotropic Blend of R-1336mzz(Z)/1130(E)

September 26, 2024

Author(s)

Aaron Rowane

Sound speed data measured using a dual-path pulse-echo instrument are reported for pure trans-1,2-dichloroethene (R-1130(E)) and an azeotropic blend of cis-1,1,1,4,4,4-hexafluorobutene (R-1336mzz(Z)) and R-1130(E) with a composition of 74.8 mass % R

Performance of New Smoke Alarms and Aerosol Measurements for a Range of Nuisance Cooking Sources in a Mock Kitchen

September 18, 2024

Author(s)

Amy Mensch, Emma Veley, Thomas Cleary

New smoke alarms that have passed the broiling hamburger nuisance test introduced in 2015 to ANSI/UL 217 Standard for Safety Smoke Alarms have reached the market. This cooking scenario was selected to be representative of cooking nuisance sources generally

Quadrature amplitude modulation for electronic side and Pound-Drever-Hall locking

September 13, 2024

Author(s)

Juntian Tu, Alessandro Restelli, Tsz-Chun Tsui, Kevin Weber, Ian Spielman, James(Trey) Porto, Steven Rolston, Sarthak Subhankar

The Pound-Drever-Hall (PDH) technique is routinely used to stabilize the frequency of a free-running laser to an ultralow expansion (ULE) reference cavity. The electronic sideband (ESB) locking scheme—a variant of the standard PDH locking scheme—helps

Automation and Machine Learning for Accelerated Polymer Characterization and Development: Past, Potential, and a Path Forward

September 7, 2024

Author(s)

Peter Beaucage, Duncan Sutherland, Tyler Martin

… foundational infrastructure development, and a dearth of standards for open interchange of hardware, software, and …

System-Level Thermal-Hydraulics Analysis of the Proposed NIST Neutron Source Design

August 24, 2024

Author(s)

Anil Gurgen, Abdullah Weiss

… The National Institute of Standards and Technology (NIST) is considering replacing its …

Multi-frequency Antenna Metrology with Sparse Measurements

July 10, 2024

Author(s)

Marc Valdez, Angela Folz, Michael Wakin, Joshua Gordon

We examine different approaches for compressive sensing in broadband antenna radiation pattern measurements, a common tool in antenna metrology. We focus on spherical near-field measurements and seek improved reductions in the needed number of measurements

CHARACTERIZATION OF ELASTOPLASTIC PROPERTIES OF ADDITIVELY MANUFACTURED SPECIMENS FROM INDENTATION DATA USING STOCHASTIC INVERSE MODELING

June 17, 2024

Author(s)

Ridwan Olabiyi, Jordan Weaver, Ashif Sikandar Iquebal

Rapid characterization of the mechanical properties and material structure of additively manufactured components via nondestructive techniques is becoming the sine-qua-non for their wider adoption. In this research, we primarily focus on estimating the ela

Conceptual Study of a New Instrument for Dynamic Neutron Scattering Measurements - The Modulated Intensity with Diffraction Analysis Spectrometer (MIDAS)

April 1, 2024

Author(s)

Antonio Benedetto, Gordon Kearley, Antonio Faraone

Dynamic neutron scattering probes unique nanoscale dynamics via measurement of energy exchanged between a sample and the neutrons. The two spectrometers that investigate processes with characteristic times around a nanosecond are backscattering (BS) and

A Common Data Dictionary and Common Data Model for Additive Manufacturing

February 16, 2024

Author(s)

Alexander Kuan, Kareem Aggour, Shengyen Li, Yan Lu, Luke Mohr, Alex Kitt, Hunter Macdonald

Additive manufacturing (AM) leverages emerging technologies and well-adopted processes to produce near-net-shape products. The advancement of AM technology requires data management tools to collect, store and share information through the product

Continuous Mobile Manipulator Performance Measurement Data

January 18, 2024

Author(s)

Omar Aboul-Enein, Henry Medeiros, Mili Shah, Ya-Shian Li-Baboud, Roger Bostelman, Ann Virts

… Apparatus was developed by the National Institute of Standards and Technology. Previous test implementations with …

Generation of Firebrands from the Burning of Full-Scale Vegetation in the Absence of Ambient Wind

October 22, 2023

Author(s)

Isaac Leventon, Mahdi Tlemsani, Mohammadhadi Hajilou, Xiaoyu Ju, Michael Gollner

… (UMD) in collaboration with the National Institute of Standards and Technology (NIST) to measure variations in …

Plumbing System Models for a Set of Reference Buildings

September 21, 2023

Author(s)

Stephen Zimmerman, Andrew K. Persily

… such set of reference buildings, the National Institute of Standards and Technology's (NIST) suite of homes, is a …

Sensitivity Analyses of the Thermal-hydraulics Safety Margins in the Proposed NIST Neutron Source Design

May 26, 2023

Author(s)

Abdullah Weiss, Anil Gurgen, Idan Baroukh, Joy Shen

… the currently operational but aging National Bureau of Standards Reactor (NBSR) onsite. The reactor will utilize …

U.S. population data for 94 identity informative SNP loci

May 15, 2023

Author(s)

Kevin Kiesler, Lisa Borsuk, Becky Steffen, Peter Vallone, Katherine Gettings

… The U.S. National Institute of Standards and Technology analyzed a set of 1036 samples …

Circular Dichroism Spectral Similarity Plots to Extend Validation and Correction to All Measured Wavelengths

March 1, 2023

Author(s)

Curtis Meuse

Interlaboratory comparisons of circular dichroism (CD) spectra are useful for developing confidence in the measurements associated with biopharmaceuticals. These measurements help define a drug's higher order (secondary and tertiary) structure

Well-being as a Composite Capability in the Smart Building Domain: A Formal and Technical Study

November 22, 2022

Author(s)

Khalid Halba, Asmaa Hailane, ahmed lbath, Edward Griffor, Anton Dahbura

Smart building value-added capabilities are gaining significant attention from various stakeholders, including the general public, researchers, and industry. One such capability is well-being, a composition of multiple atomic capabilities that characterize

Spatiotemporal Monitoring of Melt-Pool Variations in Metal-Based Additive Manufacturing

July 1, 2022

Author(s)

Siqing Zhang, Yan Lu, Paul Witherell, Timothy Simpson, Soundar Kumara, Hui Yang

Additive manufacturing provides a higher level of flexibility to build customized products with complex geometries. However, AM is currently limited in its ability to ensure quality assurance and process repeatability. Advanced imaging provides unique

Evaluate Peak Usage Reduction of a Multi-round Real-time Pricing Model Using Co-simulation

May 9, 2022

Author(s)

Chenli Wang, Thomas Roth, Cuong Nguyen

… initially developed from the National Institute of Standards and Technology (NIST). The energy profiles and cost …

Structural Performance of Nuclear Power Plant Concrete Structures Affected by Alkali-Silica Reaction (ASR). Task 3: Assessing Cyclic Performance of ASR-Affected Concrete Shear Walls

September 27, 2021

Author(s)

Jonathan Weigand, Fahim H. Sadek, Travis Thonstad, Sorin Marcu, Rudy Villegas, Long Phan, Adam L. Pintar

… research program conducted at the National Institute of Standards and Technology (NIST) under the sponsorship of the …

On the Benefits of Whole-building IAQ, Ventilation, Infiltration, and Energy Analysis Using Co-simulation between CONTAM and EnergyPlus

September 13, 2021

Author(s)

William Stuart Dols, Chad Milando, Lisa Ng, Steven Emmerich, Jyrteanna Teo

… tool, CONTAM, is developed by the National Institute of Standards and Technology (NIST) and the whole-building energy …

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