Boron — (pronEng|ˈbɔərɒn) is a chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent nonmetallic element which occurs abundantly in the evaporite ores borax and ulexite. Boron is never found as a free element on… … Wikipedia
boron group element — ▪ chemical elements Introduction any of the five chemical elements constituting Group 13 (IIIa) of the periodic (periodic law) table (see Figure >). The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), an … Universalium
boron — boronic /boh ron ik, baw , beuh /, adj. /bawr on, bohr /, n. Chem. a nonmetallic element occurring naturally only in combination, as in borax or boric acid, and obtained in either an amorphous or a crystalline form when reduced from its compounds … Universalium
Crystal structure of boron-rich metal borides — Two single crystals of YB66 (1 cm diameter) grown by floating zone technique using (100) oriented seeds. In the top crystal, the seed (left from the black line) has same diameter as the crystal. In the bottom crystal (sliced), the seed is much… … Wikipedia
Total boron — The total boron (BT) is the sum of boron species in a solution. In the environment these species usually include boric acid and borate, for example:BT = [H2BO3−] + [H3BO3] where,BT is the total boron concentration [H2BO3−] is the dihydrogen… … Wikipedia
Some properties of the boron group elements — ▪ Table Some properties of the boron group elements boron aluminum atomic number 5 13 atomic weight 10.811 26.9815 colour of element brown silver white melting point (°C) 2,100–2,200 659.7 boiling point (°C) sublimes 2,550 2,467 density ● solid … Universalium
Nuclear reactor safety systems — This article covers the technical aspects of active nuclear safety systems. For a general approach to nuclear safety, see nuclear safety. The three primary objectives of nuclear reactor safety systems as defined by the Nuclear Regulatory… … Wikipedia
раствор борной кислоты — — [А.С.Гольдберг. Англо русский энергетический словарь. 2006 г.] Тематики энергетика в целом EN boric acid solutionboron solution … Справочник технического переводчика
бак-приямок с запасом борного раствора на АЭС — бак приямок с запасом раствора борной кислоты на АЭС — [А.С.Гольдберг. Англо русский энергетический словарь. 2006 г.] Тематики энергетика в целом Синонимы бак приямок с запасом раствора борной кислоты на АЭС EN sump tank with boron solution … Справочник технического переводчика
деаэратор подпитки и регулирования раствора борной кислоты — (системы управления и защиты ядерного реактора) [А.С.Гольдберг. Англо русский энергетический словарь. 2006 г.] Тематики энергетика в целом EN make up and boron solution control deaerator … Справочник технического переводчика
boroncarbide — boron carbide n. A compound of boron and carbon, especially B4C, an extremely hard, black crystalline compound or solid solution. It is used as an abrasive, in control rods for nuclear reactors, and as a reinforcing filament in composite… … Universalium