Publications by authors named "D M Phelan"
We report the appearance of superconductivity in single-unit-cell NdNiO, exhibiting a transition temperature similar to that of thicker films. In situ synchrotron x-ray scattering performed during growth of the parent phase, NdNiO, shows that the necessary layer-by-layer deposition sequence does not follow the sequence of the formula unit but an alternate order due to the relative stability of the perovskite unit cell. We exploit this insight to grow ultrathin NdNiO heterostructures and conduct in situ studies of topotactic reduction, finding that formation of the square-planar phase occurs rapidly and is highly sensitive to reduction temperature, with small deviations from the optimum condition leading to inhomogeneity and the loss of superconductivity.
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- Despite progress in recognizing and diagnosing spontaneous coronary artery dissection (SCAD) in the last decade, there is still limited understanding of its mechanisms, contributing factors, and effective treatments.
- The text highlights research gaps in SCAD and suggests strategies like patient advocacy, independent registries, and specialized centers to improve clinical care and research outcomes.
- Additionally, it presents a patient-centered clinical care and research framework developed by the SCAD Alliance and International SCAD registry as a model to enhance understanding and management of this condition.
Article Synopsis
- - Sudden cardiac arrest and death can affect athletes of all ages and competition levels, representing a significant and preventable public health issue globally.
- - There is uncertainty around the exact rates of these incidents due to insufficient reporting and lack of infrastructure, and disparities exist in outcomes between Black and White athletes.
- - Causes vary by age, with younger athletes often facing genetic heart issues while older athletes typically experience coronary artery disease; emergency action plans are crucial for effective cardiac care.