cf. C. A. 30, 1179.7. The fogging and bactericidal effects of the vapor from irradiated cod-liver oil and from ozonide of olive oil were found to be due to substances liberating active O. Ozonides of olive oil, emulsions of ozonide in salt soln. and in serum, and the vapor from ozonides are all germicidal. Bacteria are not only killed by the O liberated from these oils but their growth rate may...

Interest in airborne smallpox transmission has been renewed because of concerns regarding the potential use of smallpox virus as a biothreat agent. Air disinfection via upper-room 254-nm germicidal UV (UVC) light in public buildings may reduce the impact of primary agent releases, prevent secondary airborne transmission, and be effective prior to the time when public health authorities are awar...

The chapter on solar radiations is well and interestingly done. This reviewer was surprised to learn how little of the germicidal portion of the ultraviolet spectrum is found in solar radiation. Ultraviolet transmission through various types of glass, plastics, other solids, and liquids is considered. Solutions for choosing various sections of the ultraviolet spectrum are included. A similar pl...

Drinking water, like every other substance, contains small amounts of bacteria. Thus, chlorine is usually added to drinking water to prevent bacterial growth. Since minimal remnant amounts of chlorine are found in drinking water, new sterilization alternatives were developed over time. Due to its germicidal effectiveness, UV-C light became an alternative to chemicals. Nowadays, UV-C light is of...

Ultraviolet (UV) energy has been used to kill microorganisms such as bacteria and viruses in air since the early 1900s. If sufficiently high doses of UV are used, the technology can very effectively sterilize air. Low UV doses and lack of uniformity of the UV radiation can, however, significantly reduce the germicidal effects of UV. This White Paper describes a new Advanced UV System (AUVS) tec...