Results 71 to 80 of about 40,348 (331)

Mapping Out Atom-Wall Interaction with Atomic Clocks [PDF]

Physical Review Letters, 2009
We explore a feasibility of measuring atom-wall interaction using atomic clocks based on atoms trapped in engineered optical lattices. Optical lattice is normal to the wall. By monitoring the wall-induced clock shift at individual wells of the lattice, one would measure a dependence of the atom-wall interaction on the atom-wall separation.
Derevianko, A., Obreshkov, B., Dzuba, V. A.   +2 more
openaire   +3 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +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

P-step Kalman-like unbiased FIR algorithm for detecting anomalies of atomic clocks

Measurement + Control, 2023
An extended measurement model anomaly detection algorithm for atomic clocks is proposed based on the p-step Kalman-like iterative Unbiased finite impulse response (UFIR) algorithm. The novel of the proposed algorithm is that it breaks the disadvantage of
Ran Yan, Junliang Liu, Jianfeng Wu, Yonghui Hu   +3 more
doaj   +1 more source

Making optical atomic clocks more stable with $10^{-16}$ level laser stabilization

, 2011
The superb precision of an atomic clock is derived from its stability. Atomic clocks based on optical (rather than microwave) frequencies are attractive because of their potential for high stability, which scales with operational frequency. Nevertheless,
A. D. Ludlow, AD Ludlow, AD Ludlow, B Young, C. W. Oates, CW Chou, CW Chou, G Santarelli, H Katori, J Millo, J Ye, J. A. Sherman, K Numata, L.-S. Ma, LS Ma, M Notcutt, MD Swallows, MM Boyd, N Nakagawa, N. D. Lemke, ND Lemke, PG Westergaard, R. W. Fox, RW Fox, S Bize, S Webster, SA Webster, ST Dawkins, T Legero, T Udem, WM Itano, Y Levin, Y. Y. Jiang   +32 more
core   +1 more source

Stability of Atomic Clocks Based on Entangled Atoms [PDF]

Physical Review Letters, 2004
We analyze the effect of realistic noise sources for an atomic clock consisting of a local oscillator that is actively locked to a spin-squeezed (entangled) ensemble of $N$ atoms. We show that the use of entangled states can lead to an improvement of the long-term stability of the clock when the measurement is limited by decoherence associated with ...
Andre, A., Sorensen, A. S., Lukin, M. D.
openaire   +3 more sources

PICALM::MLLT10 translocated leukemia

FEBS Letters, EarlyView.
This comprehensive review of PICALM::MLLT10 translocated acute leukemia provides an in‐depth review of the structure and function of CALM, AF10, and the fusion oncoprotein (1). The multifaceted molecular mechanisms of oncogenesis, including nucleocytoplasmic shuttling (2), epigenetic modifications (3), and disruption of endocytosis (4), are then ...
John M. Cullen, Antonia C. Nakatsugawa, Natalie Barton, Henry Haines, Gary S. Stein, Janet L. Stein, Daniel S. Wechsler, Jessica L. Heath   +7 more
wiley   +1 more source

A preliminary experiment of determining the geopotential difference using two hydrogen atomic clocks and TWSTFT technique

Geodesy and Geodynamics, 2020
General relativity theory (GRT) concludes that a precise clock ticks at different running rates if it is under the influence of different geopotentials.
Kuangchao Wu, Ziyu Shen, Wenbin Shen, Xiao Sun, Chenghui Cai, Yifan Wu   +5 more
doaj   +1 more source

Atomic clocks with suppressed blackbody radiation shift

, 2011
We develop a nonstandard concept of atomic clocks where the blackbody radiation shift (BBRS) and its temperature fluctuations can be dramatically suppressed (by one to three orders of magnitude) independent of the environmental temperature.
A. V. Taichenachev, Chr. Tamm, E. Peik, F. Riehle, M. V. Okhapkin, N. Huntemann, S. N. Bagayev, S. N. Lea, T. E. Mehlstäubler, V. I. Yudin   +9 more
core   +1 more source

Optical atomic clocks

La Rivista del Nuovo Cimento, 2013
69 pages, 30 figures, 7 ...
POLI, NICOLA, C. W. Oates, P. Gill, TINO, GUGLIELMO MARIA   +3 more
openaire   +3 more sources