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Displaying 4476 - 4500 of 74220

Operads for complex system design specification, analysis and synthesis

June 23, 2021
Author(s)
Spencer Breiner, Eswaran Subrahmanian, John Dusel, John Foley
As the complexity and heterogeneity of a system grows, the challenge of specifying, documenting and synthesizing correct, machine readable designs increases dramatically. Separation of the system into manageable parts is needed to support analysis at

Comprehensive Analysis of Tryptic Peptides Arising from Disulfide Linkages in NISTmAb and Their Use for Developing a Mass Spectral Library

June 22, 2021
Author(s)
Qian Dong, Xinjian Yan, Yuxue Liang, Sanford Markey, Sergey L. Sheetlin, Concepcion Remoroza, William E. Wallace, Stephen Stein
This work presents methods for identifying and then creating a mass spectral library for disulfide-linked peptides originating from the NISTmAb. Analysis involved both partially- reduced and non-reduced proteins under neutral and weakly basic conditions

Velocity and Temperature Structure of Medium-Scale Pool Fires

June 22, 2021
Author(s)
Kunhyuk Sung, Ryan Falkenstein-Smith, Anthony Hamins
A series of measurements was conducted using a bidirectional probe to characterize the upward speed in the plumes of medium-scale pool fires burning a variety of gaseous and liquid fuels. Time-averaged local measurements of the upward velocity were

3GPP NR V2X Mode 2: Overview, Models and System-level Evaluation

June 21, 2021
Author(s)
Zoraze Ali, Sandra Lagen, Lorenza Giupponi, Richard A. Rouil
Following the successful use of sidelink in Long Term Evolution (LTE) for Proximity Services (ProSe) and Cellular Vehicular-to-everything (C-V2X), the 3rd Generation Partnership Project (3GPP) is working towards its evolution in New Radio (NR) systems in

A Large Beam High Efficiency Radio Frequency Neutron Spin Flipper

June 21, 2021
Author(s)
Wangchun Chen, Ross W. Erwin, Peter Tsai, Md. T. Hassan, Nancy Hadad, Charles F. Majkrzak
A design for a radio-frequency (RF) neutron spin flipper obtained from magneto-static and neutron spin transport simulations is presented. The RF flipper constructed from this design provides a flipping probability of 0.999 or better for a beam size 6 cm

Collective Dynamics in Lipid Membranes Containing Transmembrane Peptides

June 21, 2021
Author(s)
Elizabeth Kelley, Paul Butler, Michihiro Nagao
Biological membranes are composed of complex mixtures of lipids and proteins that influence each other's structure and function. The biological activities of many channel-forming peptides and proteins are known to depend on the material properties of the

Mapping employee networks through the NIST Interactions Survey

June 21, 2021
Author(s)
Laura Espinal, Camila Young, Justyna Zwolak
As we begin to adopt approaches to help the U.S. National Institute of Standards and Technology (NIST) become a more inclusive organization, we need a way to assess the current level of inclusivity. The extent to which individuals have access to

On Computing Elastic Shape Distances between Curves in d-dimensional Space

June 21, 2021
Author(s)
Javier Bernal, James F. Lawrence, Gunay Dogan, Robert Hagwood
The computation of the elastic registration of two simple curves in higher dimensions and therefore of the elastic shape distance between them has been investigated by Srivastava et al. Assuming the first curve has one or more starting points, and the

High-Energy Magnetic Excitations from Heavy Quasiparticles in CeCu 2 Si 2

June 18, 2021
Author(s)
Yu Song, Weiyi Wang, Chongde Cao, Zahra Yamani, Yuanji Xu, Yutao Sheng, Wolfgang Loser, Yiming Qiu, Yi-Feng Yang, Robert J. Birgeneau, Pengcheng Dai
The heavy fermion superconductor CeCu 2Si 2 is located near an antiferromagnetic quantum critical point, indicating significant interplay between magnetism and superconductivity. Using inelastic neutron scattering, we show magnetic excitations in CeCu 2Si

Origin and control of ionic hydration patterns in nanopores

June 18, 2021
Author(s)
Miraslau L. Barabash, William A. Gibby, Carlo Guardiani, Alexander Smolyanitsky, Dmitry G. Luchinsky, Peter V. McClintock
In order to permeate a nanopore, an ion must overcome a dehydration energy barrier caused by the redistribution of surrounding water molecules. The redistribution is inhomogeneous, anisotropic and strongly position-dependent, resulting in complex patterns

Creation and Release of an Updated NIST DART-MS Forensics Database

June 17, 2021
Author(s)
Edward Sisco, Arun Moorthy, Laura M. Watt
Facing increasing caseloads and an everchanging drug landscape, forensic laboratories have been implementing new analytical tools. Direct analysis in real time mass spectrometry (DART-MS) is often one of these tools because it provides a wealth of

Forensic Applications of DART-MS: A Review of Recent Literature

June 17, 2021
Author(s)
Edward Sisco, Thomas Forbes
The need for rapid chemical analyses and new analytical tools in forensic laboratories continues to grow due to case backlogs, difficult to analyze cases, and identification of previously unseen materials such as new psychoactive substances. To adapt to

Hardware-Enabled Security: Container Platform Security Prototype

June 17, 2021
Author(s)
Murugiah Souppaya, Michael Bartock, Karen Scarfone, Jerry Wheeler, Tim Knoll, Uttam Shetty, Ryan Savino, Joseprabu Inbaraj, Stefano Righi
In today's cloud data centers and edge computing, attack surfaces have significantly increased, hacking has become industrialized, and most security control implementations are not coherent or consistent. The foundation of any data center or edge computing

The use of lateral flow immunoassays for the detection of fentanyl in seized drug samples and postmortem urine

June 17, 2021
Author(s)
Daniel J. Angelini, Tracey Biggs, Amber M. Prugh, Jessica A. Smith, Jennifer A. Hanburger, Bob Llano, Raquel Avelar, Angela Ellis, Brady Lusk, Abdallah Naanaa, Edward Sisco, Jennifer W. Sekowski
The opioid crisis has continued to progress in the United States and the rest of the world. As this crisis continues, there is a pressing need for a rapid and cost-effective method for detecting fentanyl. Recent studies have suggested that lateral flow

Copper-binding anticancer peptides from the piscidin family: an expanded mechanism that encompasses physical and chemical bilayer disruption

June 16, 2021
Author(s)
Fatih Comert, Frank N. Heinrich, Ananda Chowdhury, Mason Schoeneck, Caitlin Darling, Kyle Anderson, M. Daben J. Libardo, Alfredo Angeles-Boza, Vitalii I. Silin, Myriam Cotten, Mihaela Mihailescu
In the search for novel broad‑spectrum therapeutics to fight chronic infections, inflammation, and cancer, host defense peptides (HDPs) have garnered increasing interest. Characterizing their biologically‑active conformations and minimum motifs for
Displaying 4476 - 4500 of 74220