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Article
Free-space dissemination of time and frequency with 10−19 instability over 113 km
Networks of optical clocks find applications in precise navigation1,2, in efforts to redefine the fundamental unit of the ‘second’3–6 and in gravitational tests7. As the frequency instability for state-of-the-art...
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Article
Open AccessFX5, a non-steroidal glucocorticoid receptor antagonist, ameliorates diabetic cognitive impairment in mice
Diabetic cognitive impairment (DCI) is a common diabetic complication characterized by learning and memory deficits. In diabetic patients, hyperactivated hypothalamic-pituitary-adrenal (HPA) axis leads to abno...
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Article
Measurement of the neutron total cross section of carbon at the Back-n white neutron beam of CSNS
To verify the performance of the neutron total cross-sectional spectrometer, the neutron total cross section of carbon is initially measured in the energy range of 1 eV to 20 MeV using the time-of-flight metho...
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Article
Design, synthesis and antibacterial activity of a novel alkylide: 3-O-(3-aryl-propenyl)clarithromycin derivatives
A series of novel 3-O-(3-aryl-propenyl)clarithromycin derivatives were designed, synthesized and evaluated for their in vitro antibacterial activities. Regioselective allylation at 3-OH was efficiently achieved i...
