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  • The dependence of the relaxation properties of down from the temperature

    The article presents a systematic analysis of the habitat of waterfowl eider ducks, goose, geese and ducks, whose down is used in the production of thermal protective clothing and equipment. On the basis of the analysis, the hypothesis that the difference of the elastic properties of feather mass Northern species birds eider ducks and geese from domestic birds living in relatively comfortable temperatures. The method of experiment to determine the relaxation properties of textiles in a cylindrical cell. Conducted study of the relaxation properties of down masses of different types of birds depending on the temperature, which showed higher relaxation down masses of eider ducks and geese at low temperatures. A large mass of down, the diameter and shape of the barbs and tendrils, the number of tertiary structures indicate that the eiderdown has to be extremely elastic and resistant to stress. The results of experimental studies on the rheological properties of the feather down raw materials of water birds. Levels of regenerative abilities on the initial thickness of textile cells filled with fluff, recommendations on the use of down-feather mixtures in thermal protective clothing in various price categories.

    Keywords: Key words: feather down insulation, thermal protective clothing, textile cell, filling the capacity of the fluff, the rheological properties of down, the relaxation properties of down, loading-unloading, aeration

  • The Experimental Research for the Development of The Data Base of Mineral Waters

    The technologies of getting energy from the unlimited sources render possible to build the energy-independent houses with the ecologically clean infrastructure in remote areas and to solve the problems of the energy supply of the already-existing objects. In Azerbaijan and in Russia the mission-oriented research is carried out as both countries have either traditional or alternative stored energy sources, and much work is in progress on the parallel development of modern technologies of energy providing of human life support including technologies based on the use of mineral waters which are of interest in the field of bioengineering resources. The primary chemical and thermophysical properties of mineral waters underlie in creation of the technologies of the use of their resources. The special investigations on the determination of chemical properties of mineral waters of separate regions of the Stavropol Territory of the Russian Federation are substantiated and assumed in the article. In the paper the experimental works of the chemical composition of nine mineral waters of the sources of the regions of Pyatigorsk and Yessentuki cities are carried out by the methods of experimental atomic emission spectroscopy and ion chromatography. The major part of the established chemical elements includes sodium (Na) (from 844 up to 6620 mg/liter); then calcium (Ca) as one of the main sources of cations, and also kalium (K) and magnesium (Mg) (they compose from 6.7 up to 92.2 and 15 up to 76.2 mg/liter correspondingly). Sulfur (S) is also important with the quantity of 362 mg/liter; silicon is in sufficient number as part of these mineral waters – from 3.5 up to 27.3 mg/liter. The small part includes lithium (Li), boracium (B) and strontium (Sr). The findings render possible to expand the world data base of the corresponding natural resources of the Russian Federation for the development of the ecologically oriented technologies.

    Keywords: Mineralnye Vody, chemical composition, pilot studies, nuclear and issue spectroscopy, ionic chromatography