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  2. Door closer - Wikipedia

    en.wikipedia.org/wiki/Door_closer

    A door closer is a mechanical device that regulates the speed and action of a door’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems. [2]

  3. High-ozone shock treatment - Wikipedia

    en.wikipedia.org/wiki/High-ozone_shock_treatment

    High ozone shock treatment or ozone blasting is a process for removing unwanted odour, and killing mold, vermin and microorganisms in commercial and residential buildings. . The treatment is less expensive than some alternative methods of sterilizing indoor spaces - cleaning or removal of building material, or in extreme cases the abandonment of sick buildin

  4. Ground-level ozone - Wikipedia

    en.wikipedia.org/wiki/Ground-level_ozone

    Ground-level ozone (O 3), also known as surface-level ozone and tropospheric ozone, is a trace gas in the troposphere (the lowest level of the Earth's atmosphere), with an average concentration of 20–30 parts per billion by volume (ppbv), with close to 100 ppbv in polluted areas.

  5. Ozone monitor - Wikipedia

    en.wikipedia.org/wiki/Ozone_monitor

    An ozone monitor of this type operates by pulling an air sample from the atmosphere into the machine with an air pump. [3] During one cycle, the ozone monitor will take one air sample through the air inlet, and scrub the ozone from the air; for the next cycle, an air sample bypasses the scrubber and the ozone value calculated.

  6. Concealed hinge jig - Wikipedia

    en.wikipedia.org/wiki/Concealed_hinge_jig

    Concealed hinge drilling jig with embedded Forstner bit. A concealed hinge drilling jig is a type of support jig, designed for drilling 3 cm holes to fit concealed hinges into modern wardrobe doors. As many of the complementary tools used in woodworking, it uses an electric hand-drill for its operation, making a Forstner bit to turn.

  7. Concealed shoes - Wikipedia

    en.wikipedia.org/wiki/Concealed_shoes

    An analysis of the Concealed Shoe Index maintained by Northampton Museum, conducted by June Swann and published in 1996, [7] reveals that the most common place of concealment is the chimney, fireplace or hearth (26.2 per cent), followed by under the floor or above the ceiling (22.9 per cent), and almost as many concealed in the roof. Shoes have ...

  8. Ozone Park - Wikipedia

    en.wikipedia.org/wiki/Ozone_Park

    Ozone Park is a neighborhood in the southwestern section of the New York City borough of Queens, New York, United States.It is next to the Aqueduct Racetrack in South Ozone Park, a popular spot for Thoroughbred racing and home to the Resorts World Casino & Hotel.

  9. Ozone Disco fire - Wikipedia

    en.wikipedia.org/wiki/Ozone_Disco_fire

    Ozone Disco was located near the 11th World Scout Jamboree Memorial Rotonda along Timog Avenue.Its building and the land it stood on was a music venue for the most part. Initially, the site housed the jazz club "Birdland", which was owned by Sergio Orgaoow and operated from 1978 until 19

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