Results 131 to 140 of about 6,623 (297)

Enhancing Optical Lattice Clock Coherence Times with Erasure Conversion

PRX Quantum
Increasing coherent interrogation times is central to advancing the precision of optical clocks. Synchronous differential optical clock comparisons have now demonstrated atomic coherence times that far exceed the coherence time of the clock laser.
Shuo Ma, Jonathan Dolde, Xin Zheng, Dhruva Ganapathy, Alexander Shtov, Jenny Chen, Anke Stöltzel, Bennett J. Christensen, Shimon Kolkowitz   +8 more
doaj   +1 more source

High-precision Frequency Drift Compensation Study of High-performance Rubidium Atomic Clock

Chinese Journal of Magnetic Resonance
With their high reliability, small size and low power consumption, rubidium atomic clocks are widely used in the fields of navigation, communication, etc. In particular, rubidium atomic clocks for navigation satellites have developed excellent stability.
XU Junqiu, LI Junyao, ZHAO Feng, KANG Songbai, Wang Pengfei, Ming Gang   +5 more
doaj   +1 more source

Relativistic general-order coupled-cluster method for high-precision calculations: Application to the Al+atomic clock [PDF]

, 2011
Mihály Kállay, H. S. Nataraj, B. K. Sahoo, B. P. Das, Lucas Visscher   +4 more
openalex   +1 more source

Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining

Molecular Oncology, EarlyView.
IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis, Jack V. Mills, Wojciech Niedzwiedz, Valentine M. Macaulay   +3 more
wiley   +1 more source

Dr. Harold Lyons and an atomic clock at NBS [PDF]

This image is part of the Atomic Clock collection. The Atomic Clock collection is comprised of images documenting the development of the atomic clocks that were part of the National Bureau of Standards (NBS) Atomic Time System.
National Institute of Standards and Technology and Technology
core  

Benjamin F. Husten and Emory D. Heberling adjusting the first NBS Atomic Clock circa 1949 [PDF]

, 1949
Benjamin F. Husten (left) and Emory D. Heberling (right) of the National Bureau of Standards Central Radio Propagation Laboratory, Microwave Standards section, are shown making adjustments to the amplifier and power supply circuits of NBS's first atomic ...
National Institute of Standards and Technology and Technology
core  

Test of the gravitational redshift with single-photon-based atomic clock interferometers

Quantum Frontiers
The gravitational redshift (GR), as predicted by Einstein’s general theory of relativity, posits that two identical clocks situated at different gravitational potentials will tick at different rates.
Ju Liu, Yaoyao Xu, Huaqing Luo, Lushuai Cao, Minkang Zhou, Xiaochun Duan, Zhongkun Hu   +6 more
doaj   +1 more source

Strengthening properties of glass-ceramics with near-zero thermal expansion

Materials & Design
The hydrogen atomic clock microwave cavity serves as the interaction site between electromagnetic fields and hydrogen atoms, requiring materials with low coefficient of thermal expansion, high temperature variation resistance, and superior mechanical ...
Shengyun Yang, Zhenbo Cao, Chunxia Zhao, Mingjun Zhou, Huijuan Li, Yu Han, Yang Zhang, Yifang Liu, You Zhou, Jinsheng Jia   +9 more
doaj   +1 more source

Flow Enabled Target Capture Halbach‐based magnetic enrichment increases circulating tumor cell capture from blood in metastatic cancer patients

Molecular Oncology, EarlyView.
Pair‐wise comparison of the CellSearch and FETCH enrichment technologies for circulating tumor cells (CTCs) from metastatic breast, prostate, and small cell lung cancer patients shows an increased capture of CTCs using FETCH enrichment. The clinical implementation of circulating tumor cells (CTCs) as a predictive tool for therapy efficacy in the ...
Michiel Stevens, Anouk Mentink, Tom Niessink, Frank Coumans, Leonie Mekenkamp, Ruchi Bansal, Jeroen Hiltermann   +6 more
wiley   +1 more source

Finding novel vulnerabilities of hypomorphic BRCA1 alleles

Molecular Oncology, EarlyView.
Synthetic lethality screens performed to identify novel vulnerabilities often model complete gene loss, thereby overlooking patient‐derived hypomorphic mutations. In this study, we have performed genome‐wide CRISPR screens on BRCA1 hypomorphic mutations, showing BRCA1I26A behaves like wild‐type, while BRCA1R1699Q mimics deficiency. Furthermore, we have
Anne Schreuder, Klaas de Lint, Hồ Mỹ Phúc Võ, Mariana M. Góis, Rosalie A. Kampen, Marta San Martin Alonso, Ilse Nootenboom, Veronica Garzero, Tiemen J. Wendel, Rob M. F. Wolthuis, Sylvie M. Noordermeer   +10 more
wiley   +1 more source