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Article contains results of studying of quality of water of the Shershnevsky reservoir. The relationships between water chemistry parameters and aquatic macrophytes Shershnevsky reservoir (Russia) were investigated. Data on water quality and species diversity of macrophytes obtained from field studies conducted during the last two years. We studied the physico-chemical parameters such as water and air temperature, pH, conductivity, dissolved oxygen and carbon dioxide, nitrates, nitrites, ammonia, phosphates, chlor...

With the growing number of cars in Russia over the last years, the number of gas stations has several times increased, and the range of oil products has greatly changed. At present gasoline should provide reliable and efficient engineпїЅs work; it mustnпїЅt change its composition and characteristics during long-term storage; mustnпїЅt damage reservoirs, fuel related components, industrial rubber articles; should have effective volatility and hydrocarbon composition; should provide non-detonating stable fuel combus...