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  2. Explosives shipping classification system - Wikipedia

    en.wikipedia.org/wiki/Explosives_shipping...

    Series 5 tests are used to determine if an article can be assigned to HD1.5 'Very Insensitive Explosive'; series 6 tests are used to determine the classification of an article within Hazard Divisions 1.1, 1.2, 1.3, or 1.4; and series 7 tests are used to determine if an article can be assigned to HD 1.6 as an article containing predominantly ...

  3. Accuracy class - Wikipedia

    en.wikipedia.org/wiki/Accuracy_class

    Classes are denoted by either a letter or percentage. For example, Class B is a temperature accuracy from IEC-751 that requires accuracy of ± 0.15 degrees Celsius. Class 0.5 is an ANSI C12.20 accuracy class for electric meters with absolute accuracy better than ± 0.5% of the nominal full scale reading. [1]

  4. List of EC numbers (EC 1) - Wikipedia

    en.wikipedia.org/wiki/List_of_EC_numbers_(EC_1)

    EC 1.1.2.1: glycerolphosphate dehydrogenase. As the acceptor is now known, the enzyme has been transferred to EC 1.1.5.3, glycerol-3-phosphate dehydrogenase.

  5. 1,1-Dichloro-1-fluoroethane - Wikipedia

    en.wikipedia.org/wiki/1,1-dichloro-1-fluoroethane

    1,1-Dichloro-1-fluoroethane is mainly used as a solvent and foam blowing agent under the names R-141b and HCFC-141b. It is a class 2 ozone depleting substance undergoing a global phaseout from production and use under the Montreal Protocol since the late 1990s. It is being replaced by HFCs within some applications. [4]

  6. One-to-one computing - Wikipedia

    en.wikipedia.org/wiki/One-to-one_computing

    One-to-one computing used to be contrasted with a policy of "bring your own device" (BYOD), which encourages or requires students to use their own laptops, smartphones or other electronic devices in class. The distinction between BYOD and school-issued devices became blurred when many schools started recommending devices for parents to buy ...

  7. One Two Three... Infinity - Wikipedia

    en.wikipedia.org/wiki/One_Two_Three..._Infinity

    One Two Three... Infinity: Facts and Speculations of Science is a popular science book by theoretical physicist George Gamow, first published in 1947, but still (as of 2020) available in print and electronic formats.

  8. 12 (number) - Wikipedia

    en.wikipedia.org/wiki/12_(number)

    12 (twelve) is the natural number following 11 and preceding 13.. Twelve is the 3rd superior highly composite number, [1] the 3rd colossally abundant number, [2] the 5th highly composite number, and is divisible by the numbers from 1 to 4, and 6, a large number of divisors comparatively.

  9. SCN1A - Wikipedia

    en.wikipedia.org/wiki/SCN1A

    The SCN1A gene is located on chromosome 2 of humans, and is made up of 26 exons spanning a total length of 6030 nucleotide base pairs. [9] [10] Alternative splicing of exon 5 gives rise to two alternate exons. [11]