Search results
Results from the WOW.Com Content Network
Panasonic Electric Works Co., Ltd. (パナソニック電工株式会社, named "Matsushita Electric Works, Ltd. (松下電工株式会社, MEW)" until September 30, 2008) is a Japanese company specializing in the production of industrial devices. It can trace its beginnings to a firm that was founded in 1918 by Konosuke Matsushita.
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.
[43] Permanent water chlorination began in 1905, when a faulty slow sand filter and a contaminated water supply led to a serious typhoid fever epidemic in Lincoln, England. [44] Alexander Cruickshank Houston used chlorination of the water to stem the epidemic. His installation fed a concentrated solution of chloride of lime to the water being ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
By 2001, over 6,000 UV water treatment plants were operating in Europe. [67] Over time, UV costs have declined as researchers develop and use new UV methods to disinfect water and wastewater. Several countries have published regulations and guidance for the use of UV to disinfect drinking water supplies, including the US [68] [69] [70] and the ...
Panasonic Avionics Corporation (PAC), a subsidiary of Panasonic Corporation of North America and a unit of Connected Solutions Company, Panasonic, is a supplier of in-flight entertainment (IFE) and communication systems. [121]
AOL latest headlines, entertainment, sports, articles for business, health and world news.
43 - Manual Transfer or Selector Device; 44 - Unit Sequence Starting Relay; 45 - Atmospheric Condition Monitor (fumes, smoke, fire) 46 - Reverse-Phase or Phase Balance Current Relay or Stator Current Unbalance; 47 - Phase-Sequence or Phase Balance Voltage Relay; 48 - Incomplete Sequence Relay / Blocked Rotor