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  2. Chemical oxygen generator - Wikipedia

    en.wikipedia.org/wiki/Chemical_oxygen_generator

    A chlorate candle, or an oxygen candle, is a cylindrical chemical oxygen generator that contains a mix of sodium chlorate and iron powder, which when ignited smolders at about 600 °C (1,100 °F), producing sodium chloride, iron oxide, and at a fixed rate of about 6.5 man-hours of oxygen per kilogram of the mixture.

  3. ecobee - Wikipedia

    en.wikipedia.org/wiki/Ecobee

    ecobee was founded in 2007. [4] It has been recognized with a number of awards, including the Deloitte Technology Green 15 Award for Canadian green technology companies, [5] and the 2011 AHR Expo Innovation Award in the category of building automation.

  4. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  5. Free! - Wikipedia

    en.wikipedia.org/wiki/Free!

    Free! is a Japanese anime television series produced by Kyoto Animation and Animation Do. The series is loosely based on the light novel , High Speed! ( Japanese : ハイ☆スピード!

  6. World Environment Day - Wikipedia

    en.wikipedia.org/wiki/World_Environment_Day

    World Environment Day in India. World Environment Day (WED) is celebrated annually on 5 June and encourages awareness and action for the protection of the environment.It is supported by many non-governmental organizations, businesses, government entities, and represents the primary United Nations outreach day supporting the environment.

  7. Thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Thermoelectric_generator

    The typical efficiency of TEGs is around 5–8%, although it can be higher. Older devices used bimetallic junctions and were bulky. More recent devices use highly doped semiconductors made from bismuth telluride (Bi 2 Te 3), lead telluride (PbTe), [10] calcium manganese oxide (Ca 2 Mn 3 O 8), [11] [12] or combinations thereof, [13] depending on application temperature.

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