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An example of a homemade unit. The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [1] or five [2] [3] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.
An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .
During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. [1] NIOSH, on behalf of the Department of Health and Human Services, filed a trademark application on June 17, 2020, for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84.
Air ioniser and purifier with its dust collection plates removed. Air ionisers are used in air purifiers to remove particles from air. [3] Airborne particles become charged as they attract charged ions from the ioniser by electrostatic attraction. The particles in turn are then attracted to any nearby earthed (grounded) conductors, either ...
Since the release of the initial 1989 study, titled A study of interior landscape plants for indoor air pollution abatement: An Interim Report, [6] further research has been done including a 1993 paper [7] and 1996 book [8] by B. C. Wolverton, the primary researcher on the original NASA study, that listed additional plants and focused on the removal of specific chemicals.
The Phantom of the Opera (French: Le Fantôme de l'Opéra, pronounced [lə fɑ̃tom də lɔpeʁa]) is a novel by French author Gaston Leroux. It was first published as a serial in Le Gaulois from 23 September 1909 to 8 January 1910, and was released in volume form in late March 1910 by Pierre Lafitte . [ 1 ]
The Phantom Tollbooth is a children's fantasy adventure novel written by Norton Juster, with illustrations by Jules Feiffer, first published in 1961.The story follows a bored young boy named Milo who unexpectedly receives a magic tollbooth that transports him to the once prosperous, but now troubled, Kingdom of Wisdom.
Phantom of the Paradise is a 1974 American rock musical comedy horror film written and directed by Brian De Palma and scored by and starring Paul Williams. A naïve young singer-songwriter, Winslow Leach ( William Finley ) is tricked by legendary but unscrupulous music producer Swan (Williams) into sacrificing his life's work.