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Selenium is a chemical element; it has the symbol Se and atomic number 34. It has various physical appearances, including a brick-red powder, a vitreous black solid, and a grey metallic-looking form. It has various physical appearances, including a brick-red powder, a vitreous black solid, and a grey metallic-looking form.
The isotope selenium-75 has radiopharmaceutical uses. For example, it is used in high-dose-rate endorectal brachytherapy, as an alternative to iridium-192. [8]In paleobiogeochemistry, the ratio in amount of selenium-82 to selenium-76 (i.e, the value of δ 82/76 Se) can be used to track down the redox conditions on Earth during the Neoproterozoic era in order to gain a deeper understanding of ...
The first Su-34 shot down during combat occurred a few days after the beginning of the war on 28 February 2022, near the Buzova airfield. [126] [127] [128] On 1 March 2022, another Su-34 "Red 31", RF-81251 was lost near Borodyanka, Kyiv region. [119] [129] [130] On 5 March 2022, a Su-34 "Red 26", RF-81864 was lost in the area of Hrabivka ...
A U.S. Coast Guard HUS-1G in 1960. Row of Westland Wessex HU.5, 1978. The Sikorsky H-34 (company designation S-58) is an American piston-engined military utility helicopter originally designed by Sikorsky as an anti-submarine warfare (ASW) aircraft for the United States Navy.
β − (34%) 74 Se: 75 As 33 42 74.92159456(95) Stable: 3/2− 1.0000 75m As 303.9243(8) keV 17.62(23) ms IT 75 As: 9/2+ 76 As 33 43 75.92239201(95) 1.0933(38) d
The Smith & Wesson Model 34 Kit Gun is a small, 6-shot, .22 Long Rifle, double-action revolver made by Smith & Wesson. It came with a 2-inch or 4-inch barrel and has adjustable-sights. It was designed to be easily packed in a hunting or fishing "kit" for small game hunting, plinking, pest control and self defense.
CF34 engine mounted on an Embraer 190 Recent versions of the CF34 feature chevrons on the core nozzle outlet.. The General Electric CF34 is a civilian high-bypass turbofan developed by GE Aviation from its TF34 military engine.
There are 34 known isotopes of krypton (36 Kr) with atomic mass numbers from 67 to 103. Naturally occurring krypton is made of five stable isotopes and one (78 Kr) which is slightly radioactive with an extremely long half-life, plus traces of radioisotopes that are produced by cosmic rays in the atmosphere.