The Symbolism of Water. Many works of literature use symbols to represent abstract ideas. One symbol that is commonly used is water. Water is a viable symbol because it is versatile. It can be used to represent many different ideals because water in itself is ever changing. Water is used in many works to represent such ideals as death, life, love, betrayal, purity, holiness, and so on.
Alkylating Agents. Alkylating agents were one of the earliest classes of drugs used to treat cancer, beginning in the 1940âs. The biggest weakness of most cancer cells is that they are very sensitive to DNA damage. Alkylating agents work by reacting with the proteins that bond together to form the very delicate double helix structure of a DNA molecule, adding an alkyl group to some or all of them.
Alkylation unit, is one of the conversion processes used in the petroleum refineries. It is used to convert isobutane and low-molecular-weight alkenes (primarily a mixture of propene and butene) into an alkylate, a high octane gasoline component.The process occurs in presence of a strong acting acid as catalyst.ndeed, by 2010 there are some countries in the world without any installed alkylation unit. The product of the unit, the alkylate, is composed of a mixture of high-octane, branched-chain paraffinic hydrocarbons (mostly isoheptane and isooctane).