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sediments, ground-water flow characteristics through various media, hydrokinetic problems encountered in removal of radioactive substances from wastes of uranium processing, and methods of pollution control. In hydraulic research, efforts are concentrated on flow turbulence; design of shaft spillways, stilling basins, and gates; load pressures on locking installations; vibration and cavitation effects on turbines; and construction of pilot plants for water treatment and pollution control. There is an increasing use of numerical and analog computers for handling problems of water resources and economy. Czechoslovak engineers have been successful in devising methods and instruments for measuring snow density by radioactive emission; detecting leakage through a dam by salt tracers; and plotting water-stage, discharge, and velocity hydrographs.

Czechoslovak hydrologists and hydraulic engineers are very active in national and international professional organizations and meetings. Some of the professional engineers have served as consultants on hydrologic and hydraulic problems in several less-developed countries.

(7) Oceanography—Land-locked Czechoslovakia has no significant oceanographic capability; however, some oceanographic work has been carried out. The most important marine science organization is the Biological Institute of the CSAV's Hydrobiological Department at Prague. It is conducting studies on plankton, bottom ecology, and chemistry of the Black Sea. In addition, Charles University is doing some work in geological oceanography.

Czechoslovakia has not been active in international oceanographic organizations. It cooperated, however, with Cuba in Caribe Uno, an undersea habitat experiment, which took place from 17 to 20 July 1966 off the Cuban coast near Havana. A later experiment has not been reported. The cylindrical habitat, carrying two scientists, was designed and built in Czechoslovakia. The goal of this experiment was investigation of biological effects of prolonged submergence on man.

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APPROVED FOR RELEASE: 2009/06/16: CIA-RDP01-00707R000200110012-0