We have measured the spectral properties of five galaxies of low to intermediate Lx/Lb ratios with BeppoSAX and ASCA. A hard component (kT ∼ 4 − 10 keV) is observed in all galaxies. In NGC 1553 the BeppoSAX data show that this component is extended, and suggest an origin for the emission in the evolved stellar population. In NGC 3115, a point-like source appears embedded in an extended componen...

the Marine Environment # 2008 16/B978-0-12-372522-6.00035-9 All rig Else hts 1537 1 .1. N itrogen in the preoxygenated world/oceans 1537 1 .2. O xygenation of the early atmosphere: The influence of shelf area and nitrogen fixation rates 1538 2. N itrogen-Fixation, Nitrogenase, and Oxygen. Evolutionary Constraints, Adaptations of Cellular Pathways and Organisms, Feedbacks to Global Nitrogen, Car...

The aerospace environment imposes straight operative conditions so every electronic system usually needs to be validated for these. The same way, communication systems need to be evaluated before their introduction in aerospace applications. In the paper we present a new methodology for the evaluation of communication systems in space applications. The methodology aims, by abstraction, at ident...

N. Cagman, S. Karatas and S. Enginoglu, Soft topology, Comput. Math. Appl. 62 (2011), 351-358. D. Chen, The parametrization reduction of soft sets and its applications, Comput. Math. Appl. 49 (2005) 757-763. F. Feng, Y. B. Jun, X. Z. Zhao, Soft semirings, Comput. Math. Appl. 57 (2009), 1547-1553. J. C. Kelly, Bitopological spaces, Proc. London Math. Soc. , 13 (1963), 71-81. P. K. Maji, R. Biswa...

An abstract should be given e present HST observations of previously undetected optical jets in the low-luminosity radio galaxies B2 0755+37 and B2 1553+24. We show that there is accurate spatial coincidence between optical and radio emission, implying that the former is likely to be synchrotron radiation. The physical properties of the jets are similar to those known previously: their radio-op...