Results 31 to 40 of about 461 (244)

Design of accelerator failure analysis system prototype based on high precision time data

He jishu, 2022
Background High-performance accelerators have higher requirements for operational reliability and stability. By analyzing the historical data that is routinely saved during accelerator operation, most failures can be judged.
CHENG Sinong, ZHANG Zhao, ZHU Peng, LIU Zhi, WANG Lin, XU Guanglei, ZHANG Yuliang, LEI Ge   +7 more
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

A High-Precision Frequency Adjustment Circuit for Miniaturized Rubidium Atomic Clocks

Chinese Journal of Magnetic Resonance, 2019
Frequency adjusting precision is an important performance indicator of miniaturized rubidium atomic clock (RAC) in some applications, such as the case in GPS disciplined RAC systems.
YU Zhi-hui, YAN Shi-dong, MING Gang, MEI Gang-hua, ZHONG Da   +4 more
doaj   +1 more source

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

Aging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Alkali Vapor MEMS Cells Technology toward High-Vacuum Self-Pumping MEMS Cell for Atomic Spectroscopy

Micromachines, 2018
The high-vacuum self-pumping MEMS cell for atomic spectroscopy presented here is the result of the technological achievements of the author and the research group in which he works.
Pawel Knapkiewicz
doaj   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Microfabricated chip-scale rubidium plasma light source for miniature atomic clocks

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2012
We present the microfabrication and characterization of a low-power, chip-scale Rb plasma light source, designed for optical pumping in miniature atomic clocks. A dielectric barrier discharge (DBD) configuration is used to ignite a Rb plasma in a micro-fabricated Rb vapor cell on which external indium electrodes were deposited.
Lalgudi Venkatraman, Vinu, Petremand, Yves, Affolderbach, Christoph, Mileti, Gaetano, De Rooij, Nico, Shea, Herbert   +5 more
openaire   +3 more sources

Ambient‐Stable Transparent P‐Type CuI Transistors Via Room‐Temperature Pulsed Laser Deposition

Advanced Functional Materials, EarlyView.
An in situ PLD fabricated AlOx${\rm AlO}_x$/CuI/AlOx${\rm AlO}_x$ sandwich structure enables stable CuI TFTs with a field‐effect mobility of 2.3 ±$\pm$ 0.7 cm2${\rm cm}^{2}$ V−1${\rm V}^{-1}$ s−1${\rm s}^{-1}$ and excellent ambient stability. Complementary inverters based on CuI:Rb and ZnO:Al exhibit rail‐to‐rail voltage transfer characteristics and an
Yang Chen, Susanne Selle, Michael S. Bar, Michael Lorenz, Holger von Wenckstern, Marius Grundmann   +5 more
wiley   +1 more source

Electromagnetic Separation of High-abundance Rubidium-87 and Its Application

Journal of Isotopes
The rubidium clock，as the core part of the Beidou satellite navigation and positioning system，mainly provides high-precision time reference signals. Its accuracy will directly affect the performance of the Beidou system.
Li LONG, Xiuyan REN, Dan WU, Bo YUAN, Suxu LIU   +4 more
doaj   +1 more source