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The curve for E. coli is given in the figure, with the most effective UV light having a wavelength of 265 nm. This applies to most bacteria and does not change significantly for other microbes. Dosages for a 90% kill rate of most bacteria and viruses range between 2,000 and 8,000 μJ/cm 2.
Antimicrobial coatings systems take advantage of this by including photocatalytically active compounds in their formulations (i.e. titanium dioxide) that cause the coating to “flake” off over time. [26] These flakes carry the microbes along with them, leaving a “clean” coating behind. Systems like this are often described to be self ...
· Carpenter ants vary in size from ¼ to 1/2 inch; they do not eat wood like termites, but they will excavate damp wood in your house to create galleries where they nest.
Ants in a home will commonly feed on food crumbs, liquid drippings or debris on dirty dishes. “I see lots of ants in pet bowls, for instance,” she said. Leaky faucets and standing water can ...
E. coli lives on the surface of the meat, so when it’s ground up, it gets distributed throughout the meat. If the meat is not ground up, the cooking process will kill any bacteria on the outside ...
One way to compare disinfectants is to compare how well they do against a known disinfectant and rate them accordingly. Phenol is the standard, and the corresponding rating system is called the "Phenol coefficient". The disinfectant to be tested is compared with phenol on a standard microbe (usually Salmonella typhi or Staphylococcus aureus ...
Clean Like Crazy. Ants are attracted to crumbs, spills, and sticky messes. To keep them away, keep the kitchen as clean as possible. Dirty dishes left in the sink can attract ants and all sorts of ...
The bacteriocins from E. coli are called colicins (formerly called 'colicines', meaning 'coli killers'). These are the longest studied bacteriocins. They are a diverse group of bacteriocins and do not include all the bacteriocins produced by E. coli. In fact, one of the oldest known so-called colicins was called colicin V and is now known as ...