#### Table of contents

Bulg. J. Phys. vol. **27** no. S3 (2000)

**A Project for Large-Scale Stark Broadening Data Production: Ca IX and Ca X Spectral Lines**

M.S. Dimitrijević, S. Sahal-Bréchot

pp. 001-004, [abs, pdf]

**Kinetic Theory Qpesic Waves in Plasmas with Different Positive and Negative Ions**

D.Ž. Gajić, B.S. Milić, N.V. Novaković

pp. 005-008, [abs, pdf]

**Influence of Compliance for Second Harmonic Generation on Electromagnetic Wave Polarization**

B.M. Jovanović

pp. 009-012, [abs, pdf]

**Quantum Processes in Discharge Plasma Double Layer**

M. Strat, G. Strap, S. Gurlui

pp. 013-016, [abs, pdf]

**Energy Minimisation in Amorphous Ribbon Materials**

N. Derebasi

pp. 017-020, [abs, pdf]

**Threshold Energy in Direct Transition**

M. Istrate

pp. 021-024, [abs, pdf]

**On the Electromagnetic Nature of the Matter and the Gravitation**

P.R. Penchev

pp. 025-028, [abs, pdf]

**Exact Bound States of the Truncated Kratzer Potential**

V. Urumov

pp. 029-032, [abs, pdf]

**Exact Results for BEG Model of Regularly Mixed Higher Ising Spins**

V. Urumov

pp. 033-036, [abs, pdf]

**Evaluation of GRID Products of Reading and Bracknell Numerical Weather Prediction Models over Balkan Region**

H.P. Hristov

pp. 037-040, [abs, pdf]

**Long Range Forecast for First Autumn Frost According to Ground Surface Data or the Region of Dobroslavtzi**

R. Ivanov, R. Ivanov

pp. 041-044, [abs, pdf]

**Automatic Digital Registration of Meteorological Parameters**

G. Mardirossian

pp. 045-048, [abs, pdf]

**Compensation Seismoreceiver**

G. Mardirossian, B. Boytchev

pp. 049-052, [abs, pdf]

**Modeling of Atmospheric Flow Field: A Transport of Pollutants**

M.M . Popović, M. Dacić, Z. Gršić

pp. 053-056, [abs, pdf]

**The Dependences of Air Pollutant Concentration as Well as the Temperature on Diffusion**

D. Radlović, A.Višekruna, M. Pantić

pp. 057-060, [abs, pdf]

**On Temperature Variabilities in Middle Atmosphere Over Southeastern Europe**

P.T. Simeonov, S.I. Kolev

pp. 061-067, [abs, pdf]

**Water Tightness Investigation of the Second Dam of Façeshi Reservoir by the Means of Tracer Methods**

S. Amataj, J. Zotaj

pp. 068-071, [abs, pdf]

**Ozone Air Pollution over the Balkan Peninsula**

V. Grigoeieva, S. Kolev, M.Mihalev

pp. 072-075, [abs, pdf]

**MCCM A Mixing Cell Cascade Source Term Computer Code for LILW Facility**

P. Ilie, L. Didita

pp. 076-079, [abs, pdf]

**Methodology for Investigation of the Soil-Plant Systems — Spectral Optical Characteristics in the Visible and Near Infrared Field of the Electromagnetic Spectrum**

V. Ilieva

pp. 080-083, [abs, pdf]

**Method of Natural Background Precise Measurements**

V. Miloslavov

pp. 084-087, [abs, pdf]

**Lead and Cadmium Concentrations of Deep Sea Food Samples Obtained from Bosphorus**

D. Özçelik, M.C. Akyolcu, K. Temizyürek, S. Toplan

pp. 088-091, [abs, pdf]

**Sr-90 and Cs-137 Level in Milk in Some Areas of Albania After Chernobyl**

L. Qafmolla, K. Fishka

pp. 092-095, [abs, pdf]

**Results of an Investigation of the Radioactive Contamination of Soils in the Region around 'Kozlodouy' NPP**

I. Yordanova, D. Staneva, L. Misheva, M. Najdenov

pp. 096-099, [abs, pdf]

**Radon Concentration in Dwelling Houses**

R.M. Bytyçi, L. Istrefi, J. Hoxha, Xh. Ibrahimi, H. Dervishi

pp. 100-101, [abs, pdf]

**Use of Alternative Sources of Energy: Design Study of Photovoltaic Based Parking Area Lighting System**

V. Perraki, G. Loucas

pp. 102-105, [abs, pdf]

**Data Monitoring System for PV Solar Generators**

M. Stoev, A. Katerski, A. Williams

pp. 106-109, [abs, pdf]

**Dissipative Structures in the Stock Market Space**

M. Gligor, M. Ignat

pp. 110-119, [abs, pdf]

**Photoconductive Frequency-Resolved Spectrometer with M68HC11 Microcontroller**

I. Burda, S. Simon, M. Todica, S.D. Anghel, G. Cerbanic

pp. 120-123, [abs, pdf]

**Ferrites as Catalysts of Increasing Importance**

M. Caldararu, M. Feder, V. Vilceanu

pp. 124-127, [abs, pdf]

**On Transport Properties of Granular Ni**

_{x}-(SiO_{2})_{1-x}Thin FilmsH. Chiriac, M. Lozovan, M. Urse, F.V. Rusu, A.-E. Moga

pp. 128-131, [abs, pdf]

**The Large Gyromagnetic Effect on Post Production Treated Amorphous Wires**

N. Derebasi, T. Meydan

pp. 132-135, [abs, pdf]

**Thermal Expansion of Al**

_{2}TiO_{5}-MgO CeramicsM. Ivanova, L. Stefanovska, S. Popjanev, M. Milosevski

pp. 136-139, [abs, pdf]

**The Comparison of the Structures of Some Cationic Forms of Clinoptilolite Obtained from Manisa-Gordes in Turkey Using Their XRD Spectrums**

E. Izci, Ö. Orhun

pp. 140-144, [abs, pdf]

**An Investigation on the Optical and Photoelectrical Properties of TlGaX**

_{2}(X = S, Se) Ternary CompoundsN. Kalkan, J.A. Kalomiros, A.N. Anagnostopoulos

pp. 145-148, [abs, pdf]

**The Investigation of Dielectric Properties of Na Cationic Form of Clinoptilolite Obtained from Manisa-Gordes Region in Turkey**

Ö. Orhun, E. Izci

pp. 149-157, [abs, pdf]

**Spatial Distribution of Current Densities in an Infrared Image Converter**

B.G. Salamov, H. Yucel, K. Çolakoğlu

pp. 158-161, [abs, pdf]

**A Comparasion of Optical Properties of SnO**

_{2}Thin Films Prepared by Reactive Evaporation and AnnealingK. Ulutaş, D. Değer

pp. 162-165, [abs, pdf]

**Structural and Preferential Orientation Characterization of the New PAN Fibres, Used as Carbon Fibre Precursors, by X-Ray Diffraction Techniques**

I. Pencea, G. Tiriba

pp. 166-169, [abs, pdf]

**Investigation of the Pulse Breakdown Characteristics in Nitrogen by Dynamical and Time Delay Measuring Methods**

Č. Maluckov, M. Radović, V. Marković, O. Stepanović, I. Denić

pp. 170-173, [abs, pdf]

**Dosimetric Measurements of Low Power Microwaves Absorption in Liquid Samples**

S. Miclaus, D. Ionescu, E. Surducan

pp. 174-178, [abs, pdf]

**The Mean Value and the Standard Deviation of the Breakdown Time Delay in Neon vs Number of Events**

M.K. Radović, T.V. Jovanović, Č. Maluckov, O. Stepanović

pp. 179-182, [abs, pdf]

**Temperature Dependence of Photo VAC of Vidicon Target on the Base of a-Si:H**

M.A. Afrailov, I. Tapan, U.S. Bobohadjaev

pp. 183-186, [abs, pdf]

**Vibrating Bonds and the Fermi Level in Pseudodoped a-Si:H**

M.A. Afrailov, N. Derebasi, R.G. Ikramov

pp. 187-190, [abs, pdf]

**Physical Quality Control and Nondestructive Testing in Industry**

K.S. Akay, A. Avinç

pp. 191-194, [abs, pdf]

**Simulation of Signal Generation for Argon Based Gas Detectors**

N. Demir, I. Tapan

pp. 195-198, [abs, pdf]

**Recycled**

N. Tzankova Dintcheva, F.P. La Mantia

pp. 199-202, [abs, pdf]

**Microwave Impact on Enzyme Lactate Dehydrogenase**

A. Hategan, D. Martin, A. Popescu, C. Oproiu, I. Margaritescu

pp. 203-206, [abs, pdf]

**pH and Cation Effect on Sodium Carboxymethylcellulose Rheology**

F. İmer, M. Kozcaz, İ. Sönmezoğlu

pp. 207-210, [abs, pdf]

**Microorganisms Inactivation by Electron Beam Irradiation and Microwave Heating**

I. Margaritescu , D. Martin, D. Ighigeanu, A. Hategan, C. Oproiu, E. Mateescu, G. Craciun, A. Ighigeanu

pp. 211-214, [abs, pdf]

**Radiation Vulcanization Efficiency Improvement by Addidonal Use of Microwave Energy**

D. Martin, D. Ighigeanu, H. Iovu, I. Calinescu, C. Oproiu, E. Mateescu, A. Ighigeanu, G. Craciun

pp. 215-218, [abs, pdf]

**On Some Analogy between Natural Phenomena and Corresonding Social Phenomena**

L. Mašković, S. Pilipović, M. Milošević

pp. 219-222, [abs, pdf]

**Physicochemical Characterization of Al-Pilcs Prepared From Different Romanian Bentonites**

E. Popovici, I. Bedelean, Gh. Singurel, G. Arghir, D. Pop, H. Bedelean, M. Ivan

pp. 223-226, [abs, pdf]

**Relation between Cigarette Smoking and Human Serum Cadmium Concentration**

D. Özçelik, M.C. Akyolcu, S. Toplan, K. Temizyürek

pp. 227-230, [abs, pdf]

**An Application in Biology of Coupled Electrical Circuits**

V.M. Cosma, M. Lozovan, M. Cosma, D.A. Hagianu

pp. 231-234, [abs, pdf]

**Human Eye Functional Changes Induced by Occupational Exposure to Microwave Fields**

S. Miclaus, Gh.V. Vlad, A. Ionus

pp. 235-241, [abs, pdf]

**Fast Neutrons Radiotherapy and Treatments with Drugs Bearing-SH Groups**

L. Radu, B. Constantinescu, D. Gazdara, I. Radulescu

pp. 242-245, [abs, pdf]

**Mutations Induction on the Characters of Wheat by Physical and Chemical Mutagenes**

A. Ylli (Kraja), I. Stamo, D. Zeneli

pp. 246-249, [abs, pdf]

**Influence of Charged Macromolecules (Lysozyme) to Electroacoustic Signals Excited in a Solution**

N. Tankovsky, K. Nedev, G. Alexieva

pp. 250-254, [abs, pdf]

**Determination of Optimal Physical Characteristics of Glass Microelectrodes and Their Content in Intracellular Action Potential Recording**

K.Temizyürek, M.C. Akyolcu, D. Özçelik

pp. 255-258, [abs, pdf]

**Effects of Lead as a Heavy Metal on Oxidative Stress in Organism**

S. Toplan, D. Özçelik, N. Darryerli, M.C. Akyolcu

pp. 259-262, [abs, pdf]

**An Investigation of 8**

^{th}Year-Students' Anxieties Towards the Science LessonsM. Bakac, H. Aydin

pp. 263-266, [abs, pdf]

**Environmental Awareness through Teaching Physics**

M. Djidjova

pp. 267-270, [abs, pdf]

**Comparison of the Characteristics of the Gravitational Force, Gravity and Weight**

L. Mitranic

pp. 271-274, [abs, pdf]

**The Harmonization of Physics Teaching with Math ? Issues and Suggestions**

Z. Mulaj, L. Çano, D. Cipo, M. Toçi

pp. 275-278, [abs, pdf]

**Some Limit Cases in General Physics**

Z. Mulaj, T. Mulaj, A. Topalli

pp. 279-282, [abs, pdf]

**Pilot Project for Physics Teachers in High-School**

M. Munteanu, B. Logofătu, M. Logofătu

pp. 283-286, [abs, pdf]

**The Modelling a Way for Reflexive Management of the Students Cognitive Work in Learning Physics**

A. Petev, M. Hekimova, M. Atanasova

pp. 287-290, [abs, pdf]

**DelphiCAL ? Delphi Computer Aided Learning. New Features in Delphi to Assist Application of Computer Techniques in Education**

C. White, A. Alizoti

pp. 291-294, [abs, pdf]

**Physics in the Consideration of Hasan Tahsin — The First Rector of University of Istanbul**

D. Spahiu, Z. Mulaj

pp. 295-298, [abs, pdf]