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Former Roblox headquarters, now occupied by Guidewire Software. Roblox Corporation (/ ˈ r oʊ b l ɒ k s / ROH-bloks) is an American video game developer based in San Mateo, California. Founded in 2004 by David Baszucki and Erik Cassel, the company is the developer of Roblox, which was released in 2006.
Discord is a persistent group chat software, based on an eventually consistent database architecture. [88] Discord was originally built on MongoDB . The infrastructure was migrated to Apache Cassandra when the platform reached a billion messages, then later migrated to ScyllaDB when it reached a trillion messages.
Roblox is an online game platform and game creation system built around user-generated content and games, [1] [2] officially referred to as "experiences". [3] Games can be created by any user through the platforms game engine, Roblox Studio, [4] and then shared to and played by other players. [1]
Cryptic crosswords often use abbreviations to clue individual letters or short fragments of the overall solution. These include: Any conventional abbreviations found in a standard dictionary, such as:
Examples of FMJ bullets in their usual shapes: pointed ("spitzer") loaded in the 7.62×39mm rifle and round-nosed loaded in the 7.62×25mm pistol cartridges A full metal jacket ( FMJ ) bullet is a small-arms projectile consisting of a soft core (often lead ) encased in an outer shell ("jacket") of harder metal, such as gilding metal ...
The reduction of nitro compounds are chemical reactions of wide interest in organic chemistry. The conversion can be effected by many reagents. The nitro group was one of the first functional groups to be reduced. Alkyl and aryl nitro compounds behave differently. Most useful is the reduction of aryl nitro compounds.
The molecule consists of a phenyl ring attached to the isocyanate functional group. It is a colourless liquid that reacts with water. Phenyl isocyanate has a strong odor and tearing vapours, therefore it has to be handled with care. Characteristic of other isocyanates, it reacts with amines to give ureas. [2]
This reaction affords a 2:1 mixture of 2-nitro and 4-nitro isomers. [4] Chlorination of 2-nitrotoluene gives two isomers of the chloronitrotoluenes. Similarly nitration gives two isomers of dinitrotoluene. 2-Nitrotoluene is mainly consumed in the production of o-toluidine, a precursor to dyes. [4]