APSIS

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APSIS

Angina Prognosis Study In Stockholm. A trial comparing metoprolol to verapamil on atherosclerotic endpoints and psychosocial variables in patients with stable angina.
Conclusion No difference between metoprolol and verapamil vis-à-vis cardiovascular events.
References in periodicals archive ?
The images and video on this page include periastron observations from NASA's Rossi X-ray Timing Explorer, the X-Ray Telescope aboard NASA's Swift, the Hubble Space Telescope's STIS instrument, and computer simulations.
Stella & Vietri (1999) showed that in the slow rotation regime, the periastron precession and the Keplerian frequencies could be related to the phenomena of the kHz quasiperiodic oscillations (QPOs) observed in many accreting neutron stars in LMXRBs (Stella & Vietri 1999).
Evaluating the periastron power formula for various orbital parameters of black hole-pulsar systems gives a power level 6 times the corresponding Hulse-Taylor power level for a pulsar-black hole orbit with a semimajor axis of 0.
As Tony Moffat and I discussed the possibilities, we knew that observing for just a few nights around the stars' periastron passage would not be enough.
Christopher Taylor has been watching the current periastron passage with the 12 1/2-inch (32-centimeter) reflector of Hanwell Community Observatory near Oxford, England (see his drawings here).
This means that, on average, each one's periastron is aligned with the other's apoastron, though they oscillate as much as 55 [degrees] in cycles that repeat every 12,000 years.
During the 2003 X-ray minimum, XMM-Newton and the Chandra X-ray Observatory detected absorbing material in our sightline to the star, suggesting that the X-ray crash results from the primary star partially eclipsing the shock front as the companion swings around at periastron.
Burgay's team has already detected another effect of general relativity, the precession (rotation) of the system's periastron (which marks the long axis of its elliptical orbit).
Noting that the stars come within a few astronomical units of one another at periastron, the astronomers have proposed that extreme tides may have stripped the outer atmosphere from the now-smaller of the two stars and transferred it to the dominant partner during the mid-19th-century flare-up (S&T: April 2000, page 16).