Astronomy Reports -- December 2000 Volume 44, Issue 12, pp. 781-847 The Probable Role of Cloudy Wind Structure in the X-ray Emission of the Binary HD 193793 O. V. Aleksandrova and K. V. Bychkov pp. 781-789 Full Text: PDF (110 kB) Non-LTE Effects in Na I Spectral Lines in Stellar Atmospheres L. I. Mashonkina, V. V. Shimanskii, and N. A. Sakhibullin pp. 790-803 Full Text: PDF (245 kB) The Quiescent X-ray Emission of X-ray Novae and the Coronal Emission of Late-Type Stars M. M. Katsova and A. M. Cherepashchuk pp. 804-814 Full Text: PDF (167 kB) Scattering of Cyclotron Radiation in a Moving Plasma A. V. Serber pp. 815-824 Full Text: PDF (128 kB) The Nitrate Content of Greenland Ice and Solar Activity G. E. Kocharov, I. V. Kudryavtsev, M. G. Ogurtsov, E. Sonninen, and H. Jungner pp. 825-829 Full Text: PDF (355 kB) Influence of a Sunspot Penumbra on the Oscillatory Regime of Neighboring Regions N. I. Kobanov pp. 830-832 Full Text: PDF (46 kB) Effect of Coulomb Losses on the Spectra of Heavy Particles Accelerated in Prolonged Solar Events M. F. Stovpyuk and V. M. Ostryakov pp. 833-840 Full Text: PDF (99 kB) Short-Period Variations in the Proper Motions of Sunspots from SOHO (MDI) Observations L. V. Didkovskii pp. 841-847 Full Text: PDF (977 kB)