Public Variables. 1  Create a variable in the Command window. 2  Any variable created in the Command window is automatically declared public. 3  For example, from the Command window, type X=1000. 4  The variable X is now public to all applications. 5  Within a program, declare a variable as public by using the PUBLIC command. Create a variable in the Command window. 2  Any variable created in the Command window is automatically declared public. 3  For example, from the Command window, type X=1000. 4  The variable X is now public to all applications.
Any of various unsaturated hydrocarbons in essential oils and certain resins of plants and used in organic syntheses. terpene. Any of a class of hydrocarbons consisting of two or more isoprene (C5H8) units joined together. Simple terpenes are found in the essential oils and resins of plants such as conifers.
Sesquiterpenes are a class of terpenes that consist of three isoprene units and have the empirical formula C 15 H 24. Like monoterpenes, sesquiterpenes may be acyclic or contain rings, including many unique combinations. Biochemical modifications such as oxidation or rearrangement produce the related sesquiterpenoids.he cadinenes contain two fused six-membered rings. Caryophyllene, a component of many essential oils such as clove oil, contains a nine-membered ring fused to a cyclobutane ring. Vetivazulene and guaiazulene are aromatic bicyclic sesquiterpenoids.