Essentialism, In ontology, the view that some properties of objects are essential to them. The âessenceâ of a thing is conceived as the totality of its essential properties. Theories of essentialism differ with respect to their conception of what it means to say that a property is essential to an object.
Decontamination is the process of removal of contaminating pathogenic microorganisms from the articles by a. process of sterilization or disinfection. It is the use of physical or chemical means to remove, inactivate, or destroy. living organisms on a surface so that the organisms are no longer infectious.
Ultraviolet germicidal irradiation (UVGI) is a disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions.he effectiveness of germicidal UV depends on the length of time a microorganism is exposed to UV, the intensity and wavelength of the UV radiation, the presence of particles that can protect the microorganisms from UV, and a microorganismâs ability to withstand UV during its exposure.