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  2. COVID-19 pandemic - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic

    The first confirmed death was in Wuhan on 9 January 2020. [68] These numbers vary by region and over time, influenced by testing volume, healthcare system quality, treatment options, government response, [69] time since the initial outbreak, and population characteristics, such as age, sex, and overall health. [70]

  3. Rafael Carpet - Wikipedia

    en.wikipedia.org/wiki/Rafael_Carpet

    Rafael Carpet is a mine breaching system developed by Rafael Advanced Defense Systems, an Israeli weapon development company. First introduced in 2006, it has been adopted by the Israel Defense Forces and was scheduled to be fielded with the French Army by 2007. The system employs a unique implementation of fuel-air explosive (FAE) technology ...

  4. Timeline of the COVID-19 pandemic in the United States (2020)

    en.wikipedia.org/wiki/Timeline_of_the_COVID-19...

    By late November 2019, coronavirus disease 2019 had broken out in Wuhan, China. [2]As reported in Clinical Infectious Diseases on November 30, 2020, 7,389 blood samples collected between December 13, 2019, and January 17, 2020, by the American Red Cross from normal donors in nine states (California, Connecticut, Iowa, Massachusetts, Michigan, Oregon, Rhode Island, Washington and Wisconsin ...

  5. Sleep apnea - Wikipedia

    en.wikipedia.org/wiki/Sleep_apnea

    Frequency. ~ 1 in every 10 people, [3][9] 2:1 ratio of men to women, aging and obesity higher risk [5] Sleep apnea, British English sleep apnoea or sleep apnœa, is a sleep-related breathing disorder in which repetitive pauses in breathing, periods of shallow breathing, or collapse of the upper airway during sleep results in poor ventilation ...

  6. Basic airway management - Wikipedia

    en.wikipedia.org/wiki/Basic_airway_management

    Basic airway management is a concept and set of medical procedures performed to prevent and treat airway obstruction and allow for adequate ventilation to a patient's lungs. [1] This is accomplished by clearing or preventing obstructions of airways. Airway obstructions can occur in both conscious and unconscious individuals.

  7. Timeline for the day of the September 11 attacks - Wikipedia

    en.wikipedia.org/wiki/Timeline_for_the_day_of...

    9:28: Flight 93 is hijacked above northern Ohio, turning to the southeast. 9:37:46: Flight 77 crashes into the western side of The Pentagon. All 58 passengers and crew are killed aboard the aircraft including an additional 125 (including emergency workers) on the ground. The crash starts a violent fire.

  8. Trickling filter - Wikipedia

    en.wikipedia.org/wiki/Trickling_filter

    Trickling filter. A trickling filter is a type of wastewater treatment system. It consists of a fixed bed of rocks, coke, gravel, slag, polyurethane foam, sphagnum peat moss, ceramic, or plastic media over which sewage or other wastewater flows downward and causes a layer of microbial slime (biofilm) to grow, covering the bed of media.

  9. Collapse of the World Trade Center - Wikipedia

    en.wikipedia.org/wiki/Collapse_of_the_World...

    The building was equipped with a sprinkler system, but had many single-point vulnerabilities for failure: the sprinkler system required manual initiation of the electrical fire pumps, rather than being a fully automatic system; the floor-level controls had a single connection to the sprinkler water riser; and the sprinkler system required some ...

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