filtering efficiency
31Code division multiple access — This article is about a channel access method. For the mobile phone technology referred to as CDMA, see IS 95 and CDMA2000. Multiplex techniques Circuit mode (constant bandwidth) TDM · FDM  …
32Ultraviolet — UV redirects here. For other uses, see UV (disambiguation). UVB redirects here. For the mysterious shortwave radio station in Russia, see UVB 76. For other uses, see Ultraviolet (disambiguation). False color image of the Sun s corona as seen in… …
33Indoor air quality — (IAQ) is a term referring to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. IAQ can be affected by microbial contaminants (mold, bacteria), gases (including… …
34Astrophysics Data System — Logo of the ADS The Astrophysics Data System (usually referred to as ADS), developed by the National Aeronautics and Space Administration (NASA), is an online database of over eight million astronomy and physics papers from both peer reviewed and …
35Air purifier — An air purifier is a device which removes contaminants from air. Air purifiers are commonly marketed as being particularly beneficial to allergy sufferers and asthmatics, and at reducing second hand tobacco smoke. Use of purifiers Dust, pollen,… …
36Official statistics — on Germany in 2010, published in UNECE Countries in Figures 2011. Official statistics are statistics published by government agencies or other public bodies such as international organizations. They provide quantitative or qualitative information …
37GeForce 8 Series — NVIDIA GeForce 8 Series Codename(s) G80, G84, G86, G92, G98 Release date 2006 Entry level GPU 8100 (IGP), 8200 (IGP), 8300 (both integrated and discrete variants), 8400 Mid range GPU 8500, 8600 High end GPU 8800 …
38Gene chip analysis — Introduction Microarray is a powerful tool for genome analysis. It gives the global view of the genome analysis in a single experiment. Data analysis in the Microarray is a vital part as this part influences the final result. Each microarray… …
39Hydraulic machinery — are machines and tools which use fluid power to do work. Heavy equipment is a common example.In this type of machine, high pressure hydraulic fluid is transmitted throughout the machine to various hydraulic motors and hydraulic cylinders. The… …
40Digital speakers — are a form of loudspeaker technology. Not to be confused with modern digital formats and processing, they are a mature technology, having been experimented with extensively by Bell Labs as far back as the 1920s. Contents 1 Principle of operation… …
