Thursday, May 24, 2007

  • HYGROMETER (from gigro... And... Meter), the device for moisture determination of air. The psychrometer and a hair hygrometer, metering relative humidity of air on change of length of a degreased human hair are most distributed depending on an atmospheric humidity.
  • HYGROSCOPICITY (from gigro... And grech. skopeo - I supervise), ability of materials or substances to capture a moisture from an environment (routinely water vapour from air). Different drying agents, napr are hygroscopic., ignition chloride of a calcium.
  • GIGROFILY (from gigro... And... fil), land plants and animal, fitted to a habitation in conditions of high humidity: on wetlands, in bottom lands of the rivers, etc.
  • HYGROPHYTES (from gigro... And grech. phyton - a plant), the plants living in conditions of an overmoistening. Major leaves are characteristic for hygrophytes with the thin cuticula, the lengthy stalks with almost undeveloped mechanical tissue, a weak root system. Compare. Xerothytes.
  • The GUIDE (frants. guide), 1) the explorer - professional showing to tourists of remarkable of city or district. 2) the Manual, the guidebook on museums, exhibitions; the title of some bibliographic indexes.
  • GIDALGO, the planetoid (¹ 944), is open by V.Baade (1920), has is unique major a half shaft of an orbit (5,8 and. e.) and its inclination to a plane of Earth orbit (42,5 °). Distance Gidalgo from the Sun varies from 1,9 up to 9,7 and. e. Cycle time around of the Sun 13,7 years.
  • GIDASPOV Boris Veniaminovich (r. 1933), the Russian chemist, corresponding member of the Russian Academy of Science (1991; corresponding member AN the USSR with 1981). With 1985 general director of science and production association. In 1989-91 1-st secretary Leningrad obkoma and a city town committee, with 1990 - obkoma the CPSU. In 1990-91 member of a Central Committee and the secretary of a Central Committee of the CPSU. The main transactionses in range of chemistry and technology of nitrogen-bearing organic compounds. The lenin premium (1976), the State premium of the USSR (1981).
  • GIDATODY (from grech. hydor, a stem. Item hydatos - water and hodos - a path), zhelezki in a false skin of the leaf, ensuring a guttation.
  • HYDATHOPHYTES (from grech. hydor, a stem. The item hydatos - water and phyton - a plant), plants, is mostly or completely submersed in water; by roots are attached to a ground (kuvshinka) or are not attached (duckweed).
  • GIDASH (Hidas) Antal (1899-1980), the Hungarian writer. In 1925-59 cable cores in the USSR. Collections of verses " Moscow - Rhodinum " (1934), " we Grieve on thee " (1968) proniknuty patriotism, differ drama intensity. In novels "Mister Fitsek" (1936), " Marton and his friends " (1959) has shown heroic of revolutionary extirpation nach. 20 century.
  • GIDZHAK, a string stringed musical instrument (Tadjik, Uzbek, Turkmen, Uigur).
  • HYDRA Lernejskaja, in the Grecian mythology monstrous devjatigolovaja the snake, living in Lernejskom a bog on Peloponnesus, was considered invincible, t. To. At-sight clipped heads for it grew new. But Gerakl has killed the Hydra (one of it 12 exploits), cauterizing necks of a headless monster a burning smut.
  • HYDRAULICS (from gidro... And grech. aulos - a tube), the science investigator laws of motion and balance of liquids and ways of the appendix of these laws to the solution of engineering problems.
  • HYDRAULICS of STRUCTURES, see. Engineering hydraulics.
  • HYDRAULIC MINING (hydraulic mining) of coal, mining development of coal deposits at which the hollow and a transporting of coal implement a water torrent. For the first time it is introduced in Russia (1936).
  • The HYDRAULIC TRANSMISSION (hydrostatic transmission), set of the hydraulic power lifts, permitting to transfer energy from a pivot to conducted; a part of a hydraulic drive. On a principle of operation distinguish hydrodynamic and hydrostatic (volumetric) drives. Apply on motor ships, gasoline locomotives, automobiles, airplanes, in rigs, etc.
  • The HYDRAULIC TURBINE (the water turbine, the water-wheel), bladed a hydraulic motor conversing a mechanical energy of water deluge in power of the rotated bank. Use primarily in waterpower plants for a drive of electricity generators. The diameter of the driving wheel reaches 10 m, power 600 MVt and more, a design head up to 1700 m.
  • HYDRAULIC LIQUIDS, apply in machines and mechanisms to drive of gains. Should be stable to oxidation, are inert to materials of component parts of a hydraulic system, to have a low chilling temperature and a heat of a flash. In the capacity of hydraulic liquids apply some industrial oil, spirto-glyceric solutions, poliorganosiloksany, ftoruglerody, etc.
  • HYDRAULIC MOTOR (hydraulic engine), transcriber of a mechanical energy of a liquid in mechanic activity of the rotated bank, reciprocally driving bucket, etc. Distinguish hydraulic motors bladed (napr., the hydraulic turbine, a water wheel) and volumetric (napr., a hydraulic cylinder). Many hydraulic motors are reversible, i.e. can work as pompes.
  • HYDRAULIC DRIVE (a hydraulic drive, a volumetric hydraulic drive), set of devices with one or several volumetric hydraulic motors for a starting of mechanisms and machines with the help of a pressurized fluid.
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