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Displaying 876 - 900 of 1510

Long-Range Magnetic Order in Hydroxide-Layer-Doped (Li 1-x-y Fe x Mn y OD)FeSe

March 11, 2020
Author(s)
Brandon Wilfong, Xiuquan Zhou, Huafei Zheng, Navneeth Babra, Craig Brown, Jeffrey W. Lynn, Keith M. Taddei, Johnpierre Paglione, Efrain E. Rodriguez
The (Li 1-xFe xOH)FeSe superconductor has been suspected to exhibit long-range magnetic ordering due to Fe substitution in the LiOH layer. However, no direct observation such as magnetic reflection from neutron diffraction has be reported. Here, we use a

Influence of optical system operation on stability of single tracks in selective laser melting

August 20, 2019
Author(s)
Ivan Zhirnov, Igor Yadroitsev, Brandon Lane, Sergey Mekhontsev, Steven Grantham, Ina Yadroitsava
Additive manufacturing (AM) technologies are increasingly being studied and introduced into the modern industry, but for wide applications there exists some "lack of confidence" about the quality of the parts produced by AM. This distrust has an objective

Industrial Robot Accuracy Degradation Monitoring and Quick Health Assessment

May 14, 2019
Author(s)
Guixiu Qiao, Brian A. Weiss
Robot accuracy degradation monitoring and assessment are critical activities in many industrial robot applications, especially when it comes to maintaining the high accuracy required operations, such as welding, material removal, robotic drilling, and

Rattling Behavior in a Simple Perovskite NaWO 3

May 1, 2019
Author(s)
Yuya Ikeuchi, Hiroshi Takatsu, Cedric Tassel, Craig Brown, Taito Murakami, Yuki Matsumoto, Yoshihiko Okamoto, Hiroshi Kageyama
A high-pressure reaction has allowed the preparation of stoichiometric tungsten bronze NaWO 3 (Im-3). Specific heat (C ;/T 3 vs T) exhibits a round peak at 30 K, indicating anharmonic phonon modes associated with low-energy rattling vibrations. Structural

Molecular Sieving of Ethylene from Ethane using a Rigid Metal-Organic Framework

November 26, 2018
Author(s)
Rui-Biao Lin, Libo Li, Hao-Long Zhou, Hui Wu, Chaohui He, Shun Li, Rajamani Krishna, Jinping Li, Wei Zhou, Banglin Chen
There are great challenges in developing efficient adsorbents to replace currently used and energy-intensive cryogenic distillation processes for olefin/paraffin separations, due to the similar physical properties of the two molecules. We report an

Model of Mobile Manipulator Performance Measurement using SysML

November 3, 2017
Author(s)
Roger V. Bostelman, Sebti Foufou, Tsai H. Hong, Mili Shah
Test methods for measuring safety and performance of mobile manipulators have yet to be developed. Therefore, potential mobile manipulator users cannot compare one system to another. Systems Modeling Language (SysML) is a general-purpose modeling language

Sucrose density gradient centrifugation for efficient separation of engineered nanoparticles from a model organism, Caenorhabditis elegans

October 11, 2017
Author(s)
Monique E. Johnson, Antonio R. Montoro Bustos, Elijah J. Petersen, Shannon K. Hanna, Karen E. Murphy, Lee L. Yu, Bryant C. Nelson, Michael R. Winchester
This protocol describes a strategy for separating Caenorhabditis elegans (C. elegans) from engineered nanomaterials, a critical step for accurate quantification in uptake studies. Conventional rinsing procedures, typically comprised of water or buffer

Time in Cyber-Physical Systems

October 2, 2016
Author(s)
Marc A. Weiss, YaShian Li-Baboud, Aviral Shrivastava, Mohammad Khayatian, Patricia Derlery, Hugo A. Andrade, Sundeep Chandhoke, Kevin Stanton, John Eidson
… discusses common timing requirements in CPS, as well as strategies for designing, implementing and testing time-aware …

Role of e-Collaborations in Scaling-Up Materials Innovation

August 2, 2016
Author(s)
Surya R. Kalidindi, David Brough, Sheng Yen Li, Ahmet Cecen, Aleksandr L. Blekh, Faical Y. Congo, Carelyn E. Campbell
The goal of the recently announced materials innovation initiatives such as the Materials Genome Initiative (MGI) and the Integrated Computational Materials Engineering (ICME) approach is to substantially reduce the time and cost of materials design and

THE INDOOR ENVIRONMENTAL SIDE OF RESILIENCE

February 1, 2016
Author(s)
Andrew K. Persily, Steven J. Emmerich
… NIST is developing a framework to define programs and strategies to increase community-based resilience in the face …

Indoor Environmental Resilience: White Paper

July 16, 2015
Author(s)
Andrew K. Persily, Steven J. Emmerich
… NIST is developing a framework to define programs and strategies to increase community-based resilience in the face …

Porosity Measurements and Analysis for Metal Additive Manufacturing Process Control

September 16, 2014
Author(s)
John A. Slotwinski, Edward J. Garboczi, Keith M. Hebenstreit
Additive manufacturing techniques can produce complex, high-value metal parts, with potential applications as critical metal components such as those found in aerospace engines and as customized biomedical implants. Material porosity in these parts is

A Framework to Update the Plan to Coordinate NEHRP Post-Earthquake Investigations

November 1, 2013
Author(s)
William Holmes, Jonathan Bray, Thomas Holzer, Laurie Johnson, Jack Moehle, Sharon Wood
In 2007, the National Institute of Standards and Technology (NIST) awarded a National Earthquake Hazards Reduction Program (NEHRP) "Earthquake Structural and Engineering Research" contract (SB1341-07-CQ-0019) to the NEHRP Consultants Joint Venture, a
Displaying 876 - 900 of 1510
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