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 A and Type B personality theory among subjects displaying a type A behavior pattern. Type A subjects are more sensitive to stress and produce more catecholamines than type B subjects. This, in turn, seems to induce an intracellular Mg loss. In the long run, type A individuals would develop a state of Mg deficiency, which may promote a greater sensitivity to stress and, ultimately, lead to the development of cardiovascular problems. In a 1998 study done by Ball et al., they looked at differences in Type A and Type B personalities based on substance use. Their results showed that Type B personalities had more severe issues