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Mixed martial arts (MMA) [a] is a full-contact fighting sport based on striking and grappling, incorporating techniques from various combat sports from around the world. [10]In the early 20th century, various inter-stylistic contests took place throughout Japan and the countries of East Asia.
Methyl tert-butyl ether (MTBE), also known as tert-butyl methyl ether, is an organic compound with a structural formula (CH 3) 3 COCH 3.MTBE is a volatile, flammable, and colorless liquid that is sparingly soluble in water. [1]
Carnoy's solution is a fixative composed of 60% ethanol, 30% chloroform and 10% glacial acetic acid, 1 gram of ferric chloride. [1] [2]Carnoy's solution is also the name of a different fixation composed of ethanol and glacial acetic acid (3:1).
The first known racemic mixture was racemic acid, which Louis Pasteur found to be a mixture of the two enantiomeric isomers of tartaric acid.He manually separated the crystals of a mixture, starting from an aqueous solution of the sodium ammonium salt of racemate tartaric acid.
Methyl benzoate can be isolated from the freshwater fern Salvinia molesta. [3] It is one of many compounds that is attractive to males of various species of orchid bees, which apparently gather the chemical to synthesize pheromones; it is commonly used as bait to attract and collect these bees for study.
Integrated circuits (ICs) are generally classified as digital (e.g. a microprocessor) or analog (e.g. an operational amplifier).Mixed-signal ICs contain both digital and analog circuitry on the same chip, and sometimes embedded software.
Four magnetic stir bars next to a metre stick. A magnetic stirrer consists of a magnetic bar placed within the liquid which provides the stirring action. The stir bar's motion is driven by another rotating magnet or assembly of electromagnets in the stirrer device, beneath the vessel containing the liquid. [4]
para-Dimethylaminobenzaldehyde is an organic compound containing amine and aldehyde moieties which is used in Ehrlich's reagent and Kovac's reagent to test for indoles.The carbonyl group typically reacts with the electron rich 2-position of the indole but may also react at the C-3 or N-1 positions. [2]