Imperator Crassus. Julius Caesar arrives at the House of Crassus and after a brief tussle with Crassus' guards, is welcomed by the man himself. Crassus strikes an alliance with Caesar in order to bring an end to Spartacus' rebellion. He orders Caesar to remain unshaven and the purpose of this is not revealed.
1 Lanthanum oxide additive to tungsten is used in gas tungsten arc welding electrodes, as a substitute for radioactive thorium. 2  Various compounds of lanthanum and other rare-earth elements (oxides, chlorides, etc.) are components of various catalysis, such as petroleum cracking catalysts.
It is usually added in the form of ferrovanadium, a vanadium-iron alloy. Vanadium steel alloys are used in gears, axles and crankshafts. Titanium-aluminum-vanadium alloy is used in jet engines and for high-speed aircraft.Vanadium foil is used in cladding titanium to steel.Vanadium-gallium tape is used in superconducting magnets. Vanadium pentoxide is used in ceramics and as a catalyst for the production of sulfuric acid.anadium steel alloys are used in gears, axles and crankshafts. Titanium-aluminum-vanadium alloy is used in jet engines and for high-speed aircraft. Vanadium foil is used in cladding titanium to steel.