The solar power plant can be made most

Article is devoted to energy saving questions at heating of water for household needs, heating of a hotbed and on heating. In it it is told about the device of the elementary solar power plant which consists of two main parts: solar collector and heat accumulator. They can be made independently.
Article is intended for the people aspiring as much as possible to use for household needs and on heating nontraditional sources of energy, and is of interest for laymen.
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Bioactive additives: advantage or harm?

Recently articles are even more often published in the press with various opinions on use in food of biologically active additives.
In opinions of many scientists, in the conditions of a defective and poor-quality food use in food of biologically active substances as a whole is justified and scientifically proved.
At the same time, before to buy and use in food biologically active substances, it is necessary to consult to the skilled doctor, carefully to study additive structure. The relation to BUD should be same serious, as well as to medical preparations.
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