So, the first time buyer requirement could be waived ifâ¦. 1  Home is in a designated Targeted Area. 2  Buyers owned a mobile home. 3  Owners of rental property, as long as they have not lived in the property for the last 3 years.  Buyers paying off a construction loan with a term not to exceed 24 months.
Unlike chemical approaches to water disinfection, UV light provides rapid, effective inactivation of microorganisms through a physical process. When bacteria, viruses and protozoa are exposed to the germicidal wavelengths of UV light, they are rendered incapable of reproducing and infecting.icroorganisms are inactivated by UV light as a result of damage to nucleic acids. The high energy associated with short wavelength UV energy, primarily at 254 nm, is absorbed by cellular RNA and DNA.
Germicidal ultraviolet (UVC) used for UV disinfection inactivates microorganisms by disrupting their cellular membranes and by damaging their DNA or RNA. The UV light initiates a reaction between two molecules of thymine, one of the bases that make up DNA. UV light at 253.7nm wavelength (germicidal UV or UVC) causes adjacent thymine molecules on DNA to dimerize. The thymine dimer is very stable.