We study real algebraic integers larger than 1, whose norm is ±2 and all of whose conjugates have modulus larger than 1. These numbers are characterized in some easy cases.

We present optical spectroscopy of three brown dwarf candidates identified in the first 1% of the DENIS sky survey. Low resolution spectra from 6430–9150Å show these objects to have similar spectra to the uncertain brown dwarf candidate GD 165B. High resolution spectroscopy shows that one of the objects – DBD 1228-1547 – has a strong 2.3±0.05Å equivalent width absorption line of Li I 6708Å, and...

model as determined by quantitative magnetic resonance imaging. Calcium antagonists reduce the extent of infarction in rat middle cerebral artery occlusion Print ISSN: 0039-2499. Online ISSN: 1524-4628 Copyright © 1986 American Heart Association, Inc. All rights reserved. is published by the American Heart Association, 7272 Greenville Avenue, Dallas, TX 75231 Stroke doi: 10.1161/01.STR.17.6.122...

Graphical Abstract „The most important future applications of my research are the implementation more sustainable and efficient synthetic routes based on novel biocatalytic reactions that we have contributed to developing, discovery new enzyme-catalyzed … My favorite example chemistry in everyday life is beer fermentation! “ Find out about Marc Garcia-Borràs his Introducing Profile.

Gamma-ray bursts (GRBs) are highly variable and exhibit strong spectral evolution. In particular, the emission properties vary from pulse to in multipulse bursts. Here we present a time-resolved Bayesian analysis of compilation GRB pulses observed by {\it Fermi}/Gamma-ray Burst Monitor. The selected have at least four timebins with high statistical significance, which ensures that fits well det...