The three most common types of HID lamps are mercury vapor, metal halide and high-pressure sodium. HID lamps and fixtures can save 75 percent to 90 percent of lighting energy when they replace incandescent lamps and fixtures.
In an information technology product, an enhancement is a noteworthy improvement to the product as part of a new version of it. In an information technology product, an enhancement is a noteworthy improvement to the product as part of a new version of it. The term is also sometimes used to distinguish an improvement (enhancement) of some existing product capability from a totally new capability. Download this free guide.
The complement system. The complement system is a collection of blood and cell surface proteins that is a major primary defense and a clearance component of innate and adaptive immune responses. At least 30 different complement proteins act sequentially to produce a wide ranges of activities, from cell lysis to augmentation of the adaptive response.