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With the aid of these rules the UV absorption maximum can be predicted, for example in these two compounds: [8] In the compound on the left, the base value is 214 nm (a heteroannular diene). This diene group has 4 alkyl substituents (labeled 1,2,3,4) and the double bond in one ring is exocyclic to the other (adding 5 nm for an exocyclic double ...
A fencing bout takes place on a strip, or piste, which, according to the current FIE regulations, should be between 1.5 and 2 metres (4.9–6.6 ft) wide and 14 metres (46 ft) long. There are two en-garde lines (where the fencers stand at the beginning of the bout) two metres (6.6 ft) either side of the midpoint.
Oil painting by Juan Lepiani; Francisco Pizarro on the Isle del Gallo, drawing a line in the sand for the Famous Thirteen. The Famous Thirteen (Spanish Los trece de la fama, "the thirteen of the fame", or Los trece de Gallo, "the thirteen of [Isla del] Gallo") were a group of 16th century Spanish conquistadors that participated in the Spanish conquest of Peru (second expedition) along with ...