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  2. History of radiation protection - Wikipedia

    en.wikipedia.org/wiki/History_of_radiation...

    The ACI is calculated from the sum of the weighted activities of 40 potassium, 226 radium, and 232 thorium. The weighting takes into account the relative harmfulness to humans. According to official recommendations, building materials with a European ACI value greater than "1" should not be used in large quantities. [113]

  3. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    Old format used in libraries and blood banks and on airbills (out of date, but still widely used in libraries) Code 25 – Non-interleaved 2 of 5: Continuous: Two: Industrial Code 25 – Interleaved 2 of 5: Continuous: Two: Wholesale, libraries International standard ISO/IEC 16390 Code 11: Discrete: Two: Telephones (out of date) Farmacode or ...

  4. List of nominees for the Nobel Prize in Physiology or ...

    en.wikipedia.org/wiki/List_of_nominees_for_the...

    The Nobel Prize in Physiology or Medicine (Swedish: Nobelpriset i fysiologi eller medicin) is awarded annually by the Nobel Assembly at the Karolinska Institute to scientists who have made outstanding contributions in Biology. [1]

  5. Chicago - Wikipedia

    en.wikipedia.org/wiki/Chicago

    The city is the birthplace of house music (a popular form of electronic dance music) and industrial music, and is the site of an influential hip hop scene. In the 1980s and 90s, the city was the global center for house and industrial music, two forms of music created in Chicago, as well as being popular for alternative rock , punk , and new wave .

  6. Amino acid - Wikipedia

    en.wikipedia.org/wiki/Amino_acid

    Structure of a typical L-alpha-amino acid in the "neutral" form. Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. [1] Although over 500 amino acids exist in nature, by far the most important are the 22 α-amino acids incorporated into proteins. [2]

  7. Economy of Zambia - Wikipedia

    en.wikipedia.org/wiki/Economy_of_Zambia

    Zambian exports in 2006. Zambia is a developing country, and it achieved middle-income status in 2011.Through the first decade of the 21st century, the economy of Zambia was one of the fastest-growing economies in Africa, and its capital, Lusaka, the fastest-growing city in the Southern African Development Community (SADC). [18]