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Plants are sources of compounds with medicinal potential, an impressive number of medicines have in their composition compounds isolated from natural sources, many of them being used since ancient times, in traditional medicine. Aromatic and medicinal plants are sources of various nutrients and non-nutritive molecules, many of which exhibit antimicrobial and antioxidant properties. V. album extracts have a complex chemical composition, some of the identified compounds being responsable for their antibacterial and ...

Increasing resistance of microorganisms to conventional drugs has required scientists to discover new sources of biocides with a broad spectrum of action. Since ancient times, plants and plant derivatives such as essential oils have been used in traditional medicine. In the present study, the ethanolic extracts of the aerial parts (leaves and stem) of Thymus pulegioides were evaluated for their antimicrobial activity against some pathogenic bacteria, Gram+ bacteria: Staphylococcus aureus and Streptococcus pyogenes...

Induction and synchronization of estrus during non-breeding season is the most frequently used biotechnological method of assisted reproduction in sheep. Synchronization of estrus in sheep is a very important breeding technique as it can effectively improve the reproductive performance of sheep, minimize the effects of seasonal factors on sheep reproduction, extend the breeding season of sheep, shorten the estrus interval, increase the gestation rate, increase the birth rate, it can also lead to the shortening of ...

The growth of the world population, the technical-scientific and socio-economic evolution have led to the increase of the need for food products and the diversification of their range. Under these conditions, beekeeping acquires an increasingly important role as a food supply (honey) but also as a vector of growth of agricultural vegetal production through crop pollination. It also provides various products with a role in maintaining the health of the population through products with high prophylactic and therapeu...

Approximation technologies have regained much interest in recent years in the context of wide variety of computation techniques and large scale optimization. The purpose of this study is to outline the conceptual framework and architectural design of adaptive library for approximate solutions based on multi-extremum functions. Simulation technology of complex systems includes approximation methods as estimation tools. Despite the fast development of computing power and technology, many problems of multi-extremum o...

Approximation of multi-extremum functions problems arise in a wide range of fields including deterministic and stochastic technics, multi-parameter optimization. The main focus of this thesis is to consider the different principle of approximation problem. Experimental definition of external impacts on complex technogenic systems is related to technical difficulties. This area of research arises from the fact that many problems of multi-extremum optimization are known to be computationally difficult (NP-hard). We ...

Accordingly to decision of International Commission on Stratigraphy in 2011 Quaternary period was increased till 2,6 million years. As a result of lowering Quaternary boundary the upper part of regional Akchagylian stage (Gelasian stage) was included into Quaternary as bottom subdivision. Thus upper boundary of Akchagylian stage пїЅ boundary between Neogene and Quaternary, upper boundary of Akchagylian stage located between Upper and Lower Pliocene. Currently Sokol layers within Middle Volga area conventionally in...

Experience shows that last year marked by economic sector tourism is the fastest growing because it provides more than 6% of global and 13% of consumer spending. The tourism industry relies on tourism's role in economic, psychological, social created. For many regions, countries, tourism is seen as a panacea for economic recovery and raising incomes of local communities, firms. In this context, an imbalance between profit / responsibility / environmental sensitivity, which can lead to an offensive of governments a...

In recent years, membrane technologies combining advantages of biological treatment and membrane filtration have been well advanced in the world practice. Application of an anaerobic membrane bioreactor (AnMBR) for wastewater treatment could be an attractive alternative to recover energy in terms of biogas. The article presents the results of laboratory tests on water treatment in an anaerobic membrane bioreactor with an external hollow fiber module (PVDF). Researches were performed on wastewater of a pulp and pap...