Coherent spectroscopy with a single antiproton spin.

Coherent quantum transition spectroscopy is a powerful tool in metrology, quantum information processing, magnetometry and precision tests of the standard model. It was applied with great success in proton and deuteron magnetic moment measurements, which culminated in maser spectroscopy with sub-parts-per-trillion resolution and many other experiments at the forefront of physics. All of these experiments were performed on macroscopic ensembles of particles, whereas the coherent spectroscopy of a 'free' single nuclear spin has, to our knowledge, never been reported before.

Validation of the de Morton Mobility Index for measuring mobility related activities in Hungarian institutionalized older adults.

In old age, decline in mobility has a significant impact on performing activities of daily living, participating in society, and on quality of life. Mobility changes should be measured and monitored using measures with appropriate psychometric properties. The psychometrically sound de Morton Mobility Index (DEMMI) assesses a broad range of mobility related activities.

Site-Resolved Near-Surface Cation Diffusion in Magnetite.

In situ nuclear forward scattering shows a thermally induced cation exchange between a ^{57}Fe_{3}O_{4} thin-film and a Fe_{3}O_{4} (001) substrate predominantly in the octahedral sublattice for a temperature range between 470 and 710 K. The overall activation barrier in this temperature range is found to be 19±32  kJ/mol, which is significantly lower than expected from extrapolating a bulk diffusion model. This observation can be attributed to the large out-of-equilibrium cation deficit as determined by surface x-ray diffraction.

Proton transport from the antimatter factory of CERN.

Precision measurements using low-energy antiprotons, exclusively available at the antimatter factory (AMF) of CERN, offer stringent tests of charge-parity-time (CPT) invariance, which is a fundamental symmetry in the Standard Model of particle physics. These tests have been realized, for example, in antiprotonic helium and antihydrogen. In our cryogenic Penning-trap experiments, we measure the magnetic moments and charge-to-mass ratios of protons and antiprotons and now provide the most precise test of CPT invariance in the baryon sector.

Primary care staff members' experiences with managing electronic health record inbox messages.

Objective: Clinical staff often help clinicians review and respond to messages from patients. This study aimed to characterize primary care staff members' experiences with inbox work.

Materials And Methods: In this qualitative study, we conducted direct observations and focus groups with clinical staff at 4 academic primary care clinics.