Редакционен коментар

И. Симеонов     3

Oценка влиянието на комплексни обекти върху замърсяването на атмосферния въздух

Р. Димитрова     4

М. Любенова     16

Р. Куцаров, Д. Иванова     24

Xарактеристика на аеробни бактерии, изолирани от отпадни води, тиня и речна вода, използващи ЕДТА

В. Иванова, А. Тонкова, А. Василева, М. Шафарикова     32

Анаеробна биодеградация на сложни смеси от oрганични отпадъци

Л. Николов, И. Симеонов, Д. Каракашев, Е. Чорукова, Д. Гълъбова     42

Информационна биосензорна система за екологични цели

Н. Стоянов     53

Н. Нойкова, П. Копринкова     59

Състояние и адаптивност на европейски произходи от обикновен смърч (Picea abies (l.) Karst.) в ДЛ "Cамоков"

VI. Нови книги

Аерокосмически методи в eко-логията и изучаването на околната среда

Oценка влиянието на комплексни обекти върху замърсяването на атмосферния въздух

Р. Димитрова     4

Air quality estimation of the complex objects influence

R. Dimitrova

Abstract: Two different methodologies have been applied together for estimation of air pollution quality for complex objects – airport regions. A method for determination of the parameters of the reassign system and for calculation of the distribution and the expected pollution concentration in the surface layer and a method for determination of the traffic emissions and distribution of the pollution concentration in the surface layer have been used. These methods are approved as a national regulatory standards from Bulgarian Ministry of Environment and Water, the first one - for evaluation of the anthropogenic impacts on the air quality and for planning of new industrial pollution sources and the second one - for evaluation of the traffic on the air quality. The numerical result’s analysis shows that objects of investigation have not great influence to the ambient air quality in the regions of nearest villages.

Oсновни подходи за екосистемна диагностика

М. Любенова     16

General approaches for diagnostics of ecosystem

M. Lyubenova

Abstract: Two different methodologies have been applied together for estimation of air pollution quality for complex objects – airport regions. A method for determination of the parameters of the reassign system and for calculation of the distribution and the expected pollution concentration in the surface layer and a method for determination of the traffic emissions and distribution of the pollution concentration in the surface layer have been used. These methods are approved as a national regulatory standards from Bulgarian Ministry of Environment and Water, the first one - for evaluation of the anthropogenic impacts on the air quality and for planning of new industrial pollution sources and the second one - for evaluation of the traffic on the air quality. The numerical result’s analysis shows that objects of investigation have not great influence to the ambient air quality in the regions of nearest villages.

Oпределяне на относителния дял на обществения транспорт в общото замърсяване на атмосферния въздух от автотранспорта в големи населени места

Р. Куцаров, Д. Иванова     24

Determination of the share of public transport in the total contamination of air generated by motor traffic in large communities

R. Kutsarov, D. Ivanova

Abstract: Two different methodologies have been applied together for estimation of air pollution quality for complex objects – airport regions. A method for determination of the parameters of the reassign system and for calculation of the distribution and the expected pollution concentration in the surface layer and a method for determination of the traffic emissions and distribution of the pollution concentration in the surface layer have been used. These methods are approved as a national regulatory standards from Bulgarian Ministry of Environment and Water, the first one - for evaluation of the anthropogenic impacts on the air quality and for planning of new industrial pollution sources and the second one - for evaluation of the traffic on the air quality. The numerical result’s analysis shows that objects of investigation have not great influence to the ambient air quality in the regions of nearest villages.

Xарактеристика на аеробни бактерии, изолирани от отпадни води, тиня и речна вода, използващи ЕДТА

В. Иванова, А. Тонкова, А. Василева, М. Шафарикова     32

Characteristics of aerobic edta-utilizing bacteria isolated from wastewater, sludge and river water

V. Ivanova, A. Tonkova, A. Vassileva, M. Safarikova

Abstract. Ten bacterial mixed cultures, which were obtained from water and dam slime around thermal sources, drilling and springs, Maritza River water, activated sludge from industrial wastewater treatment plant, slime and water from rice-fields were investigated. These cultures utilized Na₂EDTA as the sole source of carbon and nitrogen for growth under aerobic conditions. A gram-negative and gram-positive bacteria, members of families Enterobacteriaceae and Rhizobiaceae and genera Aeromonas, Alcaligenes, Arthrobacter, Bacillus, Escherichia, Pseudomonas and Xanthomonas were identified in the mixed bacterial cultures.

Анаеробна биодеградация на сложни смеси от oрганични отпадъци

Л. Николов, И. Симеонов, Д. Каракашев, Е. Чорукова, Д. Гълъбова     42

Anaerobic digestion of complex mixture of organic wastes

L. Nikolov, I. Simeonov, D. Karakashev, E. Chorukova, D. Galabova

Abstract. Different ratios of organic wastes – waste activated sludge from municipal wastewater treatment plants, cattle manure and cheese way, in binary and triple mixtures on the biogas yield have been investigated. The time for reaching of the process steady state in laboratory anaerobic digesters have been determined to be ten days period. Results obtained have shown that some binary mixtures are more perspective in regards to biogas production optimization. It has been found that the addition of 3^rd substrate to some binary mixtures could lead to decrease of bioprocess effectiveness.

Информационна биосензорна система за екологични цели

Н. Стоянов     53

Information biosensor system for ecological purpose

N. Stoyanov

Abstract: In the present work information biosensor system for determination of phenol and catechol are described. The biosensor used as biological element tissue of the edible mushroom Agaricus bisporus. The experimental results are presented.

Eдин хибриден подход за моделиране на микробната динамика на популации: пример за анаеробно пречистване на отпадни води

Н. Нойкова, П. Копринкова     59

Abstract. In this work we combine the deterministic ODEs modelling with neural network approach. First we analyse the classical Monod type model. Identifiability analysis and parameter estimation are based on the available information from the measured variable(s). We assume the estimated model describes the investigated processes sufficiently well. After that we apply neural network modelling in order to obtain on-line estimates of the non-observed process variables. Thus our approach combine the advantage of including the most important biochemical information, and in the same time produce much faster results for the estimates of non-observed state variables. The results from our anaerobic digestion example show that after successful parameter estimation in the Monod type model the feedforward neural network is trained efficiently and can be used for future on-line estimation of substrate and biomass concentration.

Състояние и адаптивност на европейски произходи от обикновен смърч (Picea abies (l.) Karst.) в ДЛ "Cамоков"

State and adaptability of European provenances of Norway spruce (Picea abies (L.) Karst.) in state forestry "Samokov"

A. Dakov

Abstract. In the paper some results about a provenance test with twenty european provenances of Picea abies (L.) Karst at the age of 32 years, located in Rila mountain, "Govedartzi" experimental station are presented. The interaction of the origin of the seeds and the indicators survival rate, diameter at breast height and height growth is examined.

Влияние на рH върху регенеративната способност на листни сегменти на Populus tremuloides in vitro

В. Гюлева     74

Effect of pH on the regeneration capacity of leaves segments of Populus tremuloides

V. Gjuleva

Abstract. At an optimal nutritional and hormonal regime during in vitro cultivation of the Populus tremuloides leaves’ segments, the pH–value determined strongly their organogenic capacity in vitro. It was find out that the decreasing of the pH value strongly diminished the explants potential to produce adventitious shoots and at the lowest pH value – 2.0 the percent of the regenerated leaves’ segments was 12.8%. The increasing of the pH value lead to the expansion of the organogenic potential and at value pH 5.8 (control variant) reached 89.7%. The further increasing up of the pH value of the nutrient medium inhibited the regeneration capacity sufficiently. The results received demonstrate that the extreme pH value influence negatively explants regeneration ability. The obtained results are good prerequisite for further selection of sustainable lines and study genetic control on the adaptive mechanism.