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.
Substance dependence California Governor Jerry Brown. The legality of these sites are still in discussion, so there are no such sites in the United States yet. However, there is growing international evidence for successful safe injection facilities. Questionnaires Substance dependence Substance dependence, also known as drug dependence, is an adaptive state that develops from repeated drug administration, and which results in withdrawal upon cessation of drug use. A "drug addiction", a distinct concept from substance dependence, is defined as compulsive, out-of-control drug use, despite negative consequences. An "addictive drug" is a drug which is both rewarding and reinforcing. ΔFosB, a gene transcription