Pubblicazioni pervenute all'Osservatorio nelle ultime settimane: 1) Wisconsin Astrophysics preprints - The origin of variations in the 2175 A extinction bump John S. Mathis N. 488 - A hot neon nova: optical spectrophotometry and the physics of Nova Cygni 1992 A.J. Barger et al. N. 489 - Modeling composite and fluffy grains: the effects of porosity M.J. Wolff et al. N. 490 - Spectropolarimetry of Nova Cygni 1992: evidence for an asymmetric geometry K.S. Bjorkman et al. N. 491 - A weak diffuse interstellar band in the far ultraviolet spectrum of Zeta Ophiuchi? Todd M. Tripp et al. N. 492 - Interstellar detection of the intersystem line SI II] lambda2335 A toward Zeta Ophiuchi Jason A. Cardelli et al. N. 493 - Annual report 1.10.92-30.9.93; Department of Astronomy (Washburn Observatory) J.G. Hoessel N. 494 2) Astronomisches Institute Universitat Tubingen preprints - Contributions to the INTEGRAL workshop "The multiwavelength approach to gamma-ray astronomy" (Les Diablerets, Switzerland, February 2-5 1993): Multifrequency emission from hot ion disks Michael Maisak et al. Compton reflection in Sco X-1 and Cyg X-3? Michael Maisak et al. N. 1/93 - Thermal comptonisation in 4U 1700-377 M. Maisak et al. N. 2/93 - AGN emission above 20 keV: the hard x-ray detection problem Michael Maisak N. 4/93 - Contributions to the IAU Symp. 159 "Active Galactic Nuclei across the electromagnetic spectrum" Geneva, Switzerland, Aug. 30-Sept. 3, 1993: ROSAT observations of an optical quasar survey field H. Brunner et al. ROSAT all sky survey AGN spectra: constraints on accretion disks P. Friedrich et al. ROSAT observations of bright BL Lacertae objects G. Lamer et al. Spectral variability of 3C 273 at soft X-rays R. Staubert et al. The vertical structure of accretions disks in AGN H. Riffer et al. ROSAT spectra of quasars P. Buhler et al. N. 7/93 - Contributions to the 2nd Compton Symposium, Univ. of Maryland, USA, Sep 20-22, 1993: Black hole X-ray novae and pair models M. Maisack et al. HEXE observations in 1991/1992 M. Maisack et al. N. 8/93 - Contributions to the 1st ROSAT Science Symp. and data analysis workshop, Univ. of Maryland, USA, Nov. 8-10 1993: ROSAT observations of an optical quasar survey field Hermann Brunner ROSAT observation of Abell 1795: temperature and mass profile Hermann Bronner et al. N. 9/93 3) Max-Planck-Institut fuer EP preprints - Near-simultaneous ROSAT and Ginga observations of the 1991 X-ray transient in Musca J. Greiner et al. N. 273 - ROSAT observations of the 4U 1543-47 outburst in 1992 J. Greiner et al. ROSAT and BATSE observations of GRS 1915+105 J. Greiner et al. N. 275 4) Center for EUV astrophysics preprints - Doing hot cool star science with EUVE B. Haisch et al. N. 558 - Forty trillion signals from SERENDIP: the Berkeley SETI program S. Bowyer et al. N. 561 - The first EUVE source catalog S. Bowyer et al. Senza numero 5) Big Bear Solar Observatory preprints - High resolution observations of the polar magnetic fields H. Lin et al. N. 0359 - Observations of vector magnetic fields in flaring active regions N. 0360 6) Catania Astrophysics preprints - Incidence of X-ray sources among magnetic chemically peculiar stars F. Leone N. 1/94 - Radio emission from magnetic chemically peculiar stars: results of the 1992 VLA survey F. Leone et al. N. 2/94 7) Varie - Polish Academy of Sciences Space Research Centre preprint Dynamics of flaring loops. II. Flare evolution in density- temperature diagram J. Jakimiec et al. N. 1 - Oss. Astr. di Padova preprint La tratta a fibre ottiche tra il telescopio da 182 cm e lo Schmidt a Cima Ekar R.U. Claudi e D. Fantinel N. 11 - Preprint senza intestazione Radio evidence for nonthermal particle acceleration on stars of late spectral type Kenneth R. Lang - Spectrum-UV project SUV Science Data Management System: a proposal for the internal architecture: SUV-OACT-SDMS-002 Report N. 1.94 - EUVE Science Bulletin Number 22, January 1994 -