Results 31 to 40 of about 3,503 (278)

Robust characterization of microfabricated atomic beams on a six-month time scale

Physical Review Research, 2020
Miniature atomic beams can provide new functionalities for atom-based sensing instruments such as atomic clocks and interferometers. We recently demonstrated a planar silicon device for generating well-collimated thermal atomic beams [Nat. Commun.
Chao Li (李超), Bochao Wei (魏博超), Xiao Chai (柴啸), Jeremy Yang, Anosh Daruwalla, Farrokh Ayazi, C. Raman   +6 more
doaj   +1 more source

A mathematical model for the atomic clock error in case of jumps

, 2015
We extend the mathematical model based on stochastic differential equations describing the error gained by an atomic clock to the cases of anomalous behavior including jumps and an increase of instability. We prove an exact iterative solution that can be
Tavella, Patrizia, Zucca, Cristina
core   +1 more source

Effect of shield magnetization on variations in the frequency of onboard rubidium atomic clocks

St. Petersburg Polytechnical University Journal: Physics and Mathematics
In the paper, the results of a study of the influence of the magnetic shield magnetization on the relative frequency instability of small-sized rubidium atomic clocks have been presented.
Ermak Sergey, Semenov Vladimir, Baranov Alexey, Rogatin Maxim, Sergeeva Maria   +4 more
doaj   +1 more source

Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap

, 2008
We report on the transport of mixed quantum degenerate gases of bosonic 87Rb and fermionic 40K in a harmonic potential provided by a modified QUIC trap.
1, 100, 269, 392, 52, 63, 67, 7, 70, 71, 73, 73, 74, 74, 76, 76, 8, 85, 88, 88, 89, 89, 93, 93, 94, 98, 99, Anderson, Bertelsen, C. Klempt, DeMarco, DeMarco, Fortágh, Greiner, Hänsel, Hänsel, J. Arlt, J. Will, Lewandowski, O. Topic, Rolston, Search, St. Falke, T. Henninger, W. Ertmer, Walpole, Weiner   +46 more
core   +1 more source

Research on Pressure Compensation for the Rubidium Atomic Clock Working in Atmospheric Environment

Chinese Journal of Magnetic Resonance
Vapor cell rubidium atomic clock is widely used in the fields of satellite navigation and communication with advantages including small size, light weight, low power and maintenance cost.
LI Junyao, LI Chengkang, ZHAO Feng, WANG Chen, WANG Fang, KANG Songbai, WANG Pengfei, MEI Ganghua, MING Gang   +8 more
doaj   +1 more source

Electronic system for drift clock calculation and synchronization for seafloor observatory [PDF]

, 2016
The paper describes a new electronic device that allows an easily measurement of the drift between a reference time source (usually GPS) and an atomic rubidium clock which is normally used in seafloor observatories.
Apponi, Umberto, Embriaco, Davide, Marinaro, Giuditta, Romano, Vincenzo   +3 more
core  

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Research progress in rubidium and rubidium-containing functional materials

Cailiao gongcheng
Rubidium （Rb）， a rare alkali metal with distinctive physicochemical properties， has been widely used in various fields， including magnetic fluid power generation， rubidium atomic clocks， special glass， and medicine. With the research progress of rubidium
TAN Yanni, LYU Jianfeng, CHEN Yesong, ZHANG Peisen   +3 more
doaj   +1 more source

Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies

IEEE Photonics Journal, 2019
This letter presents for the first time a systematic study of an atomic frequency standard based on сoherent population trapping (CPT) effect in 87Rb vapour optically pumped with a multifrequency laser radiation formed with sidebands of a single ...
Daba Radnatarov, Sergey Kobtsev, Valerii Andryushkov, Sergey Khripunov, Evgenii Baklanov, Arkadii Yakovlev   +5 more
doaj   +1 more source

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

Molecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed, Kerstin Huebner, Katharina Erlenbach‐Wuensch, Chuanpit Hampel, Daniela Thalheim, Adriana Vial‐Roehe, Bodee Nutho, Susanne Merkel, Arndt Hartmann, Pithi Chanvorachote, Regine Schneider‐Stock   +10 more
wiley   +1 more source