Rail transport and environmental protection. Achievements of European countries
Al. Toshev, J. Petkov 4
M. Chuchkova, S. Simeonova 12
II. Technologies for depolution
Biogas-technologies for regenerative energy supply in Eastern Europe
E. Fugger 17
Investigations on preservation of Thiobacillus ferrooxidans and recovery of their oxidation activity
V. Mamatarkova 22
Lack of water in Varbitza river basin and possibilities for its overcoming
G. Bardarska, H. Dobrev 29
III. Bioinformatics and bioautomatics
M. Metzger 36
V. Rangelova 43
Metapopulation conception - essence and perspectives
D. Simeonovska-Nikolova 49
A computer system for videodensitometric investigations of DNA structures of microorganisms
E. Chorukova, V. Mitev 54
IV. Lesobiology and lesotechnics
Status and practices of gene conservation in selected species (Abies alba Mill., Picea abies (L.) karst., Taxus baccata L.)
A. Aleksandrov 60
A. Mehandjiev 63
VI. New books
Calmed torrent in Bulgaria
A. Aleksandrov 70
VII. National and international scientific forims
Europan conference of aerosols
E. Cohen 71
VIII. Ecological institutions and organisations
Executive Agency of Environment
A. Kajmaktchiev 73
EEE Foundation
K. Velev 76
30 years Institute of Air Transport
T. Petkov
In Memoriam
Prof. V. Vuchev
Rail transport and environmental protection. Achievements of European countries
Al. Toshev, J. Petkov
Abstract. Two aspects of comparatively limited impact of the rail transport on the environment are discussed on the basis of the achievements of developed countries in Europe: a) taking fields for building of new road beds and b) influence on the soils and ground waters. Some parallels and comparisons of these impacts with the same of the other transports are made.
Methods for assessment of the mean exceeding over permissible noise levels in the functional urban areas
M. Chuchkova, S. Simeonova
Abstract. The presented method for assessment of the mean exceeding over the permissible noise levels in the particular urban functional areas meets the necessity to precise the acoustic regime assessment and determination of the real noise loading of the urban environment – its functional areas and sites subject to fortified noise protection.
Biogas-technologies for regenerative energy supply in Eastern Europe
E. Fugger
Investigations on preservation of Thiobacillus ferrooxidans and recovery of their oxidation activity
V. Mamatarkova
Abstract. The influence of temperature and time of Thiobabillus ferrooxidans conservation on potentiality to recover their oxidation activity has been investigated. It has been found that during rather long period of conservation (up to 4 months) at 4±0,5oC and 19±1oC these microorganisms keep their high activity to oxidize ferrous iron.
Lack of water in Varbitza river basin and possibilities for its overcoming
G. Bardarska, H. Dobrev
Abstract: There is a lack of water for water supply and ecosystems in summer time in Varbitza river basin. Its overcoming by usage of local water reservoirs and water treatments are presented.
Investigations of advanced control in environment protection based on pilot plants and real-time simulators
M. Metzger
Abstract. The purpose of the paper is to present the research activities of the CSCE group in the field of advanced control in environment protection. The research investigations deal with the application of real-world pilot plants, well equipped with professional control equipment and with application of real-time simulators (virtual plants and virtual controllers).
Investigation of the influence of system parameters over technical characteristics of a banan biosensor
V. Rangelova
Abstract. A theoretical model for describing of the tissue biosensor system for measuring of neurotransmitter dopamine is given. The system is cosubstrate sensitive amperometric. Simulation for investigation of influence of system parameters over technical characteristics is done. Some results are given.
Metapopulation conception - essence and perspectives<
D. Simeonovska-Nikolova
Abstract: The present notions about metapopulations are treated in this work. Some of perspectives of metapopulation conception in the population ecology and genetics, conservation biology and landscape ecology are discussed.
A computer system for videodensitometric investigations of DNA structures of microorganisms
E. Chorukova, V. Mitev
Abstract. The created system realizes direct computer-added processing of electrophoretic images, obtained from DNA fingerprinting gels. It offers an opportunity for accumulation of databases from videodensitometric images simultaneously processing the stored data. Reliable classification of microobjects can be processed. It is based on cluster analysis and artificial neural networks. Dendograms provide the graphic presentation of the results. An expert system assists the classification procedures.
A. Mehandjiev
Abstract. The scientific paper presents the basic characteristics of the sustainable agriculture: yield stability, rentability of crop production; high profitability; marketing; sustainable management of resources; product quality; research impact on production.
Ecologization of agriculture means application of technologies without use of pesticides, increase of soil fertility; effective crop rotation; use of varieties resistant to biotic and abiotic stress; high food quality with low content of antinutritional substances.
