As a result of such chicanery, the voter rolls in many American cities and counties â in such states as South Dakota, Texas, Mississippi, Kentucky, Indiana, West Virginia, Maryland, Iowa, North Carolina, and Missouri â soon included more names than there were residents of voting age in those locales.
From Wikipedia, the free encyclopedia. Microbial corrosion, also called bacterial corrosion, bio-corrosion, microbiologically influenced corrosion, or microbially induced corrosion (MIC), is corrosion caused or promoted by microorganisms, usually chemoautotrophs.It can apply to both metals and non-metallic materials.acterial corrosion may appear in form of pitting corrosion, for example in pipelines of the oil and gas industry. Anaerobic corrosion is evident as layers of metal sulfides and hydrogen sulfide smell.
Intergranular Corrosion. The microstructure of metals and alloys is made up of grains, separated by grain boundaries. Intergranular corrosion is localized attack along the grain boundaries, or immediately adjacent to grain boundaries, while the bulk of the grains remain largely unaffected. This form of corrosion is usually associated with chemical segregation effects (impurities have a tendency to be enriched at grain boundaries) or specific phases precipitated on the grain boundaries.