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  2. Timeline of events related to per- and polyfluoroalkyl ...

    en.wikipedia.org/wiki/Timeline_of_events_related...

    In both muscle and liver samples, the highest level of PFAS chemical was PFOS, at 82.6 parts per billion (ppb) in a muscle sample and 2,970 ppb in a liver sample. [ 112 ] [ 113 ] 14 September 2021 EPA announced plans to revise effluent guidelines for businesses that conduct chromium electroplating operations and discharge PFAS in their wastewater.

  3. Timeline of World War I - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_World_War_I

    "World War One Timeline". UK: BBC. "New Zealand and the First World War (timeline)". New Zealand Government. "Timeline: Australia in the First World War, 1914-1918". Australian War Memorial. "World War I: Declarations of War from around the Globe". Law Library of Congress. "Timeline of the First World War on 1914-1918-Online.

  4. Timeline of peptic ulcer disease and Helicobacter pylori

    en.wikipedia.org/wiki/Timeline_of_peptic_ulcer...

    This is a timeline of the events relating to the discovery that peptic ulcer disease and some cancers are caused by H. pylori. In 2005, Barry Marshall and Robin Warren were awarded the Nobel Prize in Physiology or Medicine for their discovery that peptic ulcer disease (PUD) was primarily caused by Helicobacter pylori , a bacterium with affinity ...

  5. Timeline of transportation technology - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_transportation...

    1826 – Bill passed for Liverpool and Manchester Railway at second attempt and George Stephenson commences work on 35-mile twin track line permitting simultaneous travel in both directions between the 2 towns. Means of traction not specified to reduce opposition.

  6. Outline of World War II - Wikipedia

    en.wikipedia.org/wiki/Outline_of_World_War_II

    The following outline is provided as an overview of and topical guide to World War II: . World War II, or the Second World War was a global military conflict that was fought between September 1, 1939, and September 2, 1945.

  7. Timeline of the Deepwater Horizon oil spill - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_Deepwater...

    March 2008 – The mineral rights to drill for oil at the Macondo well, located in Mississippi Canyon Block 252 in the United States sector of the Gulf of Mexico about 41 miles (66 km) off the Louisiana coast, were purchased by BP at the Minerals Management Service's (MMS) Lease Sale No. 206, held in New Orleans.

  8. Timeline of the history of the scientific method - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_history_of...

    1620 – The Novum Organum, fully Novum Organum, sive indicia vera de Interpretatione Naturae ("New Organon, or true directions concerning the interpretation of nature"), a philosophical work by English philosopher and statesman Francis Bacon, is published.

  9. Timeline of operating systems - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_operating_systems

    Concise Microsoft O.S. Timeline – a color-coded concise timeline for various Microsoft operating systems (1981–present) Bitsavers – an effort to capture, salvage, and archive historical computer software and manuals from minicomputers and mainframes of the 1950s, 1960s, 1970s, and 1980s

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