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Icon sizes: 256x256, 48x48, 32x32, 24x24, 20x20, 16x16 File formats: ICO, GIF, PNG, BMP ![]() ![]() ![]() ![]() Tags: how to install icon theme ubuntu, gtkrc 2.0 icon theme, icon window, speaker icon in system tray, icon field armor chukka bootYears to ten, and they have acquired ability to maintain cars in weight not eightTons, and seventy. Very few new technologies have played the same role in To economy. Besides understanding of a being of processes and problems of the traditional industrial Technologies chemists of a XIX-th century have created new, very valuable in the commercial plan Products. One of the major opening has been made casually. In 1856 English chemist William Henry Perkins casually synthesised from aniline, Received from coal tar, a brilliant mauve paint. It Opening has appeared especially fruitful for Germany where it became a basis The big paint and varnish industry, and also has pushed research of properties Organic molecules (carbon connections). In the XX-th century on the basis of the organic Chemistry had development the industry of synthetic materials and modern Biochemistry. Researches in chemical laboratories have been aimed at studying of the broadest Spectrum of materials. Quite often elementary way of perfection of a product Improvement of initial materials is. In some branches quality Products grows with rise in temperature and the pressure, used in process Productions, - and willy-nilly there is a problem it metals and The ceramics, capable to maintain high pressures and temperatures. In it The reason of that metallurgy became a key to perfection of steam coppers, Engines, and later and steam turbines. The same requests to pressure and To temperature were important for perfection of internal combustion engines, Jet engines in aircraft and in rocket production. Other achievement Chemical research of substances there was an opening of an epoch of plastic and Synthetic materials. Our own epoch is generated by researches of materials. Laboratories Company "Bell" which have accepted the present form in 1925, have begun the program Researches on increase of reliability and service life of the vacuum lamps which were Basis of a telephone system of that time. Frequent replacement of lamps managed expensively, and in ![]()
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