Creosote removed; the "heavy oil", which sinks; and the "anthracene oil", which when cold is mostly solid and greasy, of a buttery consistence. Creosote refers to the portion of coal tar which distills as "heavy oil", typically between 230–270 °C, also called "dead oil"; it sinks into water but still is fairly liquid. Carbolic acid is produced in the second fraction of distillation and is often distilled into what is referred to as "carbolic oil". Commercial creosote will contain substances from six groups. The two groups occur in the greatest amounts and are the products of the distillation process—the "tar acids",
Name-letter effect most commonly used one is a letter rating task, which involves having participants judge all the letters of the alphabet. Even within this method there are variations in the instructions (how much you like the letters or how attractive you find them), in the rating scales (five-point, seven-point, or nine-point), in the order of the letters (random or alphabetical), and in data collection (paper-and-pencil or computer-based). There is no standard algorithm for calculating implicit self-esteem. At least six algorithms are in use. In their meta-analysis of the name-letter effect, Stieger, Voracek, and Formann recommend using the ipsatized double-correction algorithm (the