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Ultraviolet germicidal irradiation (UVGI) is a disinfection technique employing ultraviolet (UV) light, particularly UV-C (180–280 nm), to kill or inactivate microorganisms. UVGI primarily inactivates microbes by damaging their genetic material, thereby inhibiting their capacity to carry out vital functions.
Low power consumption of semiconductors introduce UV disinfection systems that utilized small solar cells in remote or Third World applications. [ 2 ] By 2019, LEDs made up 41.4% of UV light sales, up from 19.2% in 2014 [ 3 ] The UV-C LED global market is expected to rise from $223m in 2017 to US$991m in 2023.
The IEEE Spectrum Emerging Technology 2018 Award was given to ASML for its Extreme Ultraviolet Lithography system. ASML is currently the top supplier of photolithography systems to the semiconductor industry. [62] In the category for Popular Prize, Vadim Banine received the 2018 European Inventor Award for shaping the future of microchip ...
NEWater (pronounced New-Water) is the brand name given to highly treated reclaimed wastewater produced by Singapore's Public Utilities Board. NEWater is produced by further purifying conventionally treated wastewater through microfiltration, reverse osmosis and ultraviolet radiation. The water is potable quality and can be added to drinking ...
Calgon Carbon was listed on the New York Stock Exchange in 1991, and throughout the 1990s it bought a number of subsidiaries, with Calgon Carbon's executive Colin Bailey overseeing many of the acquisitions. [8] In 1997 Calgon Carbon Asia was formed as a marketing subsidiary in Singapore, serving much of Asia, India, Australia and New Zealand. [9]
A second approach uses stored solar electricity from a battery, and operates at night or at low light levels to power an ultraviolet lamp to perform secondary solar ultraviolet water disinfection. Solar thermal water disinfection uses heat from the sun to heat water to 70–100 °C for a short period of time. A number of approaches exist.
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