Natural rubber processing chemicals. Natural rubber is susceptible to degradation by a wide range of bacteria. The bacteria "Streptomyces coelicolor", "Pseudomonas citronellolis", and "Nocardia" spp. are capable of degrading vulcanized natural rubber. Natural rubber Natural rubber, also called India rubber or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water. Malaysia and Indonesia are two of the leading rubber producers. Forms of polyisoprene that are used as natural rubbers are classified as elastomers. Currently, rubber is harvested mainly in the form of the latex from the rubber tree or others.
Type constructor be considered "built-in" in typed lambda calculi via currying. Abstractly, a type constructor is an "n"-ary type operator taking as argument zero or more types, and returning another type. Making use of currying, "n"-ary type operators can be (re)written as a sequence of applications of unary type operators. Therefore, we can view the type operators as a simply typed lambda calculus, which has only one basic type, usually denoted formula_1, and pronounced "type", which is the type of all types in the underlying language, which are now called "proper types" in order to distinguish them from the types of the