Archive file. An archive file is a file that is composed of one or more computer files along with metadata. Archive files are used to collect multiple data files together into a single file for easier portability and storage, or simply to compress files to use less storage space. Archive files often store directory structures, error detection and correction information, arbitrary comments, and sometimes use built-in encryption.
Sevin (tm) Insecticide. Sevin is the trade name for a widely used synthetic insecticide containing the active ingredient carbaryl. Carbaryl belongs to the chemical class called carbamates. As insecticides go Sevin is only moderately toxic to mammals and is still widely used in gardens and landscapes.
50 It is the form of selenium found in most preparations of selenium-enriched yeast, which has been used in many clinical trials. To some extent, L-selenomethionine can be credited with the recent upsurge in interest in selenium as a cancer-preventing supplement.s we'll now see, selenium biology is a complex area. Several forms of selenium are required to provide cancer preventive benefits. Research shows that the levels of selenium needed for optimal effects are higher than those previously thought to be needed simply to support antioxidant enzyme activity.