Multicenter superstrata

Black-hole entropy from supergravity superstrata states

There are, by now, several arguments that superstrata, which represent D1-D5P bound states that depend upon arbitrary functions of two variables and that preserve four supersymmetries, exist in string theory, and that their gravitational back-reaction results in smooth horizonless solutions. In this paper we examine the shape and density modes of the superstratum and give strong evidence that t...

A Randomized Multicenter Trial

Multicenter Randomized Trial

Background Thrombolytic therapy reduces mortality after acute myocardial infarction, even when treatment is initiated relatively late after onset of symptoms. The mechanism underlying this survival benefit is incompletely understood. Methods and Results In a prospectively designed ancillary study of a randomized, placebo-controlled trial of late thrombolytic therapy (LATE), the signal-averaged ...

A Prospective Multicenter Study

Background and Purpose The aims of this prospective and multicenter study were to determine the frequency of anticardiolipin and antinuclear antibodies in an unselected ischemic and hemorrhagic stroke population and to evaluate the clinical significance of these autoantibodies. Methods Over a 1-year period, we collected plasma from 481 consecutive patients with ischemic or hemorrhagic stroke at...

A Multicenter Randomized Trial

Background—Previous studies suggested that transplantation of autologous bone marrow–derived mononuclear cells (BMNCs) improves heart function in chronic chagasic cardiomyopathy. We report the results of the first randomized trial of BMNC therapy in chronic chagasic cardiomyopathy. Methods and Results—Patients 18 to 75 years of age with chronic chagasic cardiomyopathy, New York Heart Associatio...