KR Persei, a Mid-F Eclipsing Binary with a One-day Period

KR Per is a partially eclipsing binary with an orbital period of 0.9960798 days, very close to one sidereal day, making it difficult to obtain extensive phase coverage in a reasonable amount of time. We used the Wilson–Devinney program to determine its orbital elements and stellar absolute dimensions from recently acquired radial velocities and differential BVRI observations that were supplemented with previous differential UBV measurements and published times of minima. The two components are each F5 V stars with masses of and . The radii are and . The orbital period of the eclipsing system is variable and more times of minima observations are needed. A comparison with evolutionary tracks indicates that the system has an age of 2.1 ± 0.1 Gyr

Neurogenic stressor cardiomyopathy caused by aneurysmal subarachnoid hemorrhage

Clinical demonstration of the development of acute non-coronarogenic myocardial lesion in a patient with intraoperative rupture of the arterial aneurysm of the basilar artery. Neurogenic cardiomyopathy should be considered in the differential diagnostics of acute heart failure in patients with acute cerebral lesion