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Displaying 3426 - 3450 of 143775

Reversible switching between two common protein folds in a designed system using only temperature

January 19, 2023

Author(s)

Tsega Solomon, Yanan He, Fahriye Nese Sari, Yihong Chen, David Travis Gallagher, Philip Bryan, John Orban

Naturally occurring metamorphic proteins have the ability to interconvert from one folded state to another through either a limited set of mutations or by way of a change in the local environment. Here, we show that it is possible to switch reversibly

Advances and Trends in Machine Learning and Artificial Intelligence: A Polymer Perspective

January 18, 2023

Author(s)

Tyler Martin, Debra Audus

Here we highlight recent advancements in informatics, machine learning, and artificial intelligence as applied to the fields of polymer physics and chemistry. In particular, we focus on the unique challenges presented by polymers and how the field is

In Situ Neutron Reflectometry Study of a Tungsten Oxide/Li-Ion Battery Electrolyte Interface

January 18, 2023

Author(s)

Eric Rus, Joseph A. Dura

The solid electrolyte interface/interphase (SEI) is of great importance to the viable operation of lithium ion batteries. In the present work the interface between a tungsten oxide electrode and an electrolyte solution consisting of LiPF 6 in a deuterated

Methods for the SI Value Assignment of the Purity of Organic Compounds (IUPAC Technical Report)

January 18, 2023

Author(s)

David L. Duewer, Katrice Lippa, Brian Lang, Blaza Toman, Michael Nelson, Kenneth W. Pratt, Steven Westwood, Yoshitaka Yoshitaka Shimuzu, Takeshi Saito, Beatrice Lalerle, Xinhua Dai, Stephen Davies, Marina Ricci, Annarita Baldan, Stefan Sarge, Haifeng Wang, Ralf D. Josephs, Michal Mariassy, Dietmar Pfieffer, John Warren, Wolfram Bremser, Stephen L.R. Ellison, Ting Huang, Ales Fajgelj, Lindsey Mackay, Robert Wielgosz

Metrological traceability to the SI of the result of an analysis for an organic compound is achieved through a calibration hierarchy anchored in a primary calibrator of the compound, the mass fraction content of which is established in a manner traceable

Simulating the Influence of Supporting Electrolyte Concentration on Copper Electrodeposition in Microvias

January 18, 2023

Author(s)

Trevor Braun, Jimmy John, Nagarajan Jayaraju, Daniel Josell, Thomas P. Moffat

Robust, void-free Cu electrodeposition in high-aspect ratio features relies on careful tuning of electrolyte additives and electrochemical parameters for a given feature dimension or wafer pattern. Typically, Cu electrodeposition in electronics

Pyramidal Hyperbolic Metasurface for Enhancing Spontaneous Emission of Nitrogen-Vacancy Centers in Nanodiamond

January 17, 2023

Author(s)

Peng Zheng, Saransh Arora, Krishanu Ray, Stephen Semancik, Ishan Barman

Abstract Nitrogen-vacancy (NV) centers in nanodiamond hold great promise for creating superior biological labels and quantum sensing methods. Yet, inefficient photon generation and extraction from excited NV centers restricts the achievable sensitivity and

High-performance Kerr microresonator optical parametric oscillator on a silicon chip

January 16, 2023

Author(s)

Edgar Perez, Gregory Moille, Xiyuan Lu, Jordan Stone, Feng Zhou, Kartik Srinivasan

Optical parametric oscillation (OPO) is distinguished by its wavelength access, that is, the ability to flexibly generate coherent laser light at wavelengths that are dramatically different from the pump laser, and in principle bounded solely by energy

High-Resolution Structural Characterization of Biomacromolecules in Aqueous Solutions from Extended q-range X-ray Scattering Data

January 16, 2023

Author(s)

Igor Levin, Alexander Grishaev, Fan Zhang, Jiahui Chen, Uta Ruett, Olaf Borkiewicz, Mrenal Bera

IEEE 802.11bf DMG Sensing: Enabling High-Resolution mmWave Wi-Fi Sensing

January 16, 2023

Author(s)

Steve Blandino, Tanguy Ropitault, Anirudha Sahoo, Nada T. Golmie

IEEE 802.11bf amendment is defining the Wireless Local Area Network (WLAN) sensing procedure, which supports sensing in license-exempt frequency bands below 7 GHz and above 40GHz. In this paper, we examine WLAN sensing in the millimeter wave band, i.e.,

A review of machine learning-based zero-day attack detection: Challenges and future directions

January 15, 2023

Author(s)

Yang Guo

Zero-day attacks exploit unknown vulnerabilities so as to avoid being detected by cybersecurity detection tools. The studies Bilge and Dumitraş (2012), Google (0000) and Ponemon Sullivan Privacy Report (2020) show that zero-day attacks are wide spread and

Facile Polymerization in a Bicellar Template to Produce Polymer Nano-Rings

January 15, 2023

Author(s)

Chung-Hao Liu, Catherine Cheu, John Barker, Lin Yang, Mu-Ping Nieh

Hypothesis: A well-defined discoidal bicelle composed of three lipids, specifically zwitterionic long-chain 1,2-dipalmitoyl phosphocholine (DPPC) and short-chain 1,2-dihexanoyl phosphocholine (DHPC) doped with anionic 1,2-dipalmitoyl phosphoglycerol (DPPG)

Insights on Hydrogen Injection and GdO x /Co Interface Chemistry from In Operando Neutron Reflectometry and Secondary Ion Mass Spectrometry

January 13, 2023

Author(s)

S. Sheffels, Purnima P. Balakrishnan, M. Huang, Shinichiro N. Muramoto, Julie Borchers, Joseph Dura, Alexander Grutter, G. Beach

Beginners Guide to Biometric and Forensic Science Human Subjects Research Protections

January 12, 2023

Author(s)

Melissa Taylor, William Chapman, R. Austin Hicklin

This document is designed to help researchers in the United States navigate and comply with requirements and best practices for human subjects research, with specific emphasis on biometric and forensic research. The purpose of this document is to summarize

Entering New Era of Thermoelectric Oxide Ceramics with High Power Factor through Designing Grain Boundaries

January 12, 2023

Author(s)

Cesar-Octavio Romo-De-La-Cruz, Yun Chen, Liang Liang, Sergio Paredes-Navia, Winnie Wong-Ng, Mark Williams, Xueyan Song

Thermoelectric (TE) oxide ceramics could play a significant role in waste heat recovery using TE generators, accelerating clean energy generation and achieving net-zero emissions. In 2003, the TE performance of single-crystal Ca3Co4O9+δ was evaluated with

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