R C Brown
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Explore the profile of R C Brown including associated specialties, affiliations and a list of published articles.
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363
Citations
2217
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Recent Articles
1.
McGrew W, Zhang X, Leopardi H, Fasano R, Nicolodi D, Beloy K, et al.
Phys Rev X
. 2024 Nov;
6(4).
PMID: 39568554
The pursuit of ever more precise measures of time and frequency motivates redefinition of the second in terms of an optical atomic transition. To ensure continuity with the current definition,...
2.
Parker T, Brown R, Sherman J
Metrologia
. 2024 Jul;
60(6).
PMID: 38984089
Residual time delays in time transfer systems such as two-way satellite time and frequency transfer (TWSTFT), or GPS carrier phase (GPSCP) change over time. A double difference such as TWSTFT-GPSCP...
3.
McGrew W, Zhang X, Fasano R, Schaffer S, Beloy K, Nicolodi D, et al.
Nature
. 2018 Nov;
564(7734):87-90.
PMID: 30487601
The passage of time is tracked by counting oscillations of a frequency reference, such as Earth's revolutions or swings of a pendulum. By referencing atomic transitions, frequency (and thus time)...
4.
Jospe M, Brown R, Williams S, Roy M, Meredith-Jones K, Taylor R
Obes Sci Pract
. 2018 Jun;
4(3):283-288.
PMID: 29951219
Objectives: Although monitoring is considered a key component of effective behaviour change, the development of apps has allowed consumers to constantly evaluate their own diet, with little examination of what...
5.
Beloy K, Zhang X, McGrew W, Hinkley N, Yoon T, Nicolodi D, et al.
Phys Rev Lett
. 2018 May;
120(18):183201.
PMID: 29775346
We demonstrate the absence of a dc Stark shift in an ytterbium optical lattice clock. Stray electric fields are suppressed through the introduction of an in-vacuum Faraday shield. Still, the...
6.
Brown R, Phillips N, Beloy K, McGrew W, Schioppo M, Fasano R, et al.
Phys Rev Lett
. 2018 Jan;
119(25):253001.
PMID: 29303326
Optical clocks benefit from tight atomic confinement enabling extended interrogation times as well as Doppler- and recoil-free operation. However, these benefits come at the cost of frequency shifts that, if...
7.
Brown R, Fischer T, Goldwich A, Keller F, Young R, Plener P
Psychol Med
. 2017 Jul;
48(2):337-346.
PMID: 28705261
Background: Social media presents an important means for social interaction, especially among adolescents, with Instagram being the most popular platform in this age-group. Pictures and communication about non-suicidal self-injury (NSSI)...
8.
Sun B, Brown R, Burns T, Murdaugh D, Palasis S, Jones R
AJNR Am J Neuroradiol
. 2017 Apr;
38(6):1242-1247.
PMID: 28408626
Background And Purpose: Declines in both functional activation and functional connectivity have been reported in patients with sickle cell disease. In this study, we derived the functional and default mode...
9.
Brown R, Witt A, Fegert J, Keller F, Rassenhofer M, Plener P
Psychol Med
. 2017 Apr;
47(11):1893-1905.
PMID: 28397633
Children and adolescents are a vulnerable group to develop post-traumatic stress symptoms after natural or man-made disasters. In the light of increasing numbers of refugees under the age of 18...
10.
Brown R, Lemmon B
J Plant Res
. 2016 Aug;
110(1):93-106.
PMID: 27520049
The quadripolar microtubule system (QMS) is a complex array that is associated with predivision establishment of quadripolarity in sporocytes of lower plants (bryophytes and lycopsids). The QMS unerringly predicts the...