Comptes rendus de l'Académie bulgare des Sciences

C O N T E N T S

MATHEMATICS

01   K. Kirchev, G. Borisova   A Triangular Model of Regular Coupling of Dissipative and Antidissipative Operators _ 

02   V. Ristovska   On the Irregularity of the Distribution of the Generalized Van der Corput Sequence

03   V. Grozdanov   The Weighted b-Adic Diaphony

04   V. Peneva, I. Popchev   Aggregation of Fuzzy Preference Relations with Different Importance

SPACE RESEARCH

05   Y. Tassev, P. I. Y. Velinov, D. Tomova   Effect of Geomagnetic Activity on the Ozone Profiles during Solar Minimum and Maximum

06   P. I. Y. Velinov, L. Mateev   Analytical Approach for Cosmic Ray Proton Ionization in the Lower Ionosphere and Middle Atmosphere

07   D. Krezhova, T. Yanev, St. Lukov, P. Pavlova, V. Aleksieva, D. Hristova, S. Ivanov   Method for Detecting Stress Induced Changes in Leaf Spectral Reflectance

ENGINEERING SCIENCES

08   K. Stoilova   Predictive Noniterative Coordination in Hierarchical Two-Level Systems

09   K. Georgiev, T. Trifonov, G. Mengov   Efficient Orienting Subsystems in an Adaptive Resonance Theory (ART) Neural Network

10   I. G. Garvanov   CFAR PI Detector in Presence of Binomial Distribution Flow from Randomly Arriving Impulse Interference

11   V. Samichkov, Ya. Ivanov   Viscoelastic Properties and Relaxation Time of Thermoassociative Graft Copolymer Solutions _ 

CHEMISTRY

12   A. T. Bijev, P. Prodanova, A. Nankov   Guanidino Derivatives of Substituted 2-(1H-1-Pyrrolyl)alkanoic Acids

13   M. K. Georgieva, O. I. Petrov, K. V. Petrova, A. D. Popov, Е. А. Velcheva   IR Spectral and Structural Changes Caused by the Conversion of 4-Aminobenzensulfonamide (Sulfanilamide) into Azanion

14   E. A. Velcheva, K. V. Petrova, N. S. Antonova, L. I. Daskalova, M. K. Georgieva, O. I. Petrov   Experimental and Computational Studies on the IR Spectra and Structure of N-(4-Ethoxyphenyl)acetamide and Its Azanion

15   S. Blaskova, N. Nikolov, J. Kirova   Investigation of the Iskar River Water Quality

GEOLOGY

16   I. Genov   Model of Sedimentation of the Bosphorous Strait during Neoeuxine-Holocene Time

17   Z. Milakovska, A. Harkovska   Zeolitic Rocks from the Paleogene Lacustrine Volcano-Sedimentary Deposits in Gorna Glogovitza Graben (Kraishte Region, Western Bulgaria)

BIOLOGY

18   P. Yonova, G. Stoilkova   Synthesis and Plant Growth-Regulating Activity of Pyridyl-Imidazolidinone Compounds

19   R. Jordanova, G. Radoslavov, G. Deevska, E. Liebau, R. D. Walter, I. Bankov   Novel Nematode Lipid Binding Protein from Ascaridia galli. Structural Studies

MEDICINE

20   M. Stojtscheva, G. Genev, P. Gatseva   Vergleichende Untersuchung des Elektrolytgehalts in Fakalien und Blut bei Kranken mit Diarrhoe-Syndrom