China's Belt and Road Initiative and Central Asia

Complex of Measures to Improve Risk Management Mechanisms at Oil Engineering Enterprises

“…The objective of this work is to contribute to putting into system the modern knowledge about the polyfunctional (multifunctional) role of aquatic biota (aquatic animals, plants, microorganisms) in the self-purification of water bodies and streams and to briefly present some elements of the qualitative theory of the self-purification mechanism of aquatic ecosystems. The synthesis and organization of the material was made here at the conceptual level on the basis of some previous publications (e.g., [36][37][38][39][40][41][42][43][44], and others), without detailed reviewing of all relevant and related publications.…”

“…The complex of hydrobiological and ecological self-purification mechanisms of aquatic ecosystems incorporates, according to the author of this paper, four types of mechanisms [21,22,[36][37][38][39][40][41][42][43][44]: Type 1: Filters. Filters are vital functional components of the machinery for water selfpurification; filtration activity of organisms ("filters") [30]; Type 2: Pumps.…”

“…Here some examples of who used and cited the paper [37], namely: Ostroumov, S.A., (2010). Biocontrol of water quality: Multifunctional role of biota in water self-purification.…”

“…Relevant issues of aquatic environmental science and ecology, especially those that are relevant to water quality, were studied in publications of a number of ecologists and biologists (e.g., , and many others). In a series of previous publications, we originated and presented an innovative theory of ecosystem-performed improvement of water quality (water self-purification) (e.g., [12,16,19,21,22,[30][31][32][33][36][37][38][39][40][41][42][43][44], and other articles). In the modern biosphere and hydrosphere, the role and relevance of water self-purification is increasing due to the current anthropogenic deterioration of natural water quality [5,13,29] and increased load of pollutants and nutrients on water bodies and streams [4,9,13,21,22,26,29].…”

“…The author proposes to consider these biological factors and processes that are relevant and contribute to water self-purification. This is an original table, it is based on our previous publications [13,22,[36][37][38][39][40][41][42][43][44], and also on some other publications, as well as many publications and materials of other authors, including papers or files published online. Is inhibited under the effect of some pollutants (according to the author's data: surfactants, synthetic detergents) [33] 6.Removal of pollutants from water as a result of sorption by pellets excreted by aquatic animals Pellet formation is reduced when feeding of aquatic animals is inhibited, as it was shown by the author 7.Release into water of organic matter, which can be used by bacteria or exert a regulatory effect on them Algae can release organic molecules that might be used by bacteria as substrates for oxidation.…”