enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Indoor air quality - Wikipedia

    en.wikipedia.org/wiki/Indoor_air_quality

    Radon is measured in picocuries per liter of air (pCi/L) or becquerel per cubic meter (Bq m-3). Both are measurements of radioactivity. The World Health Organization (WHO) sets the ideal indoor radon levels at 100 Bq/m-3. [97] In the United States, it is recommend to fix homes with radon levels at or above 4 pCi/L.

  3. Clean air delivery rate - Wikipedia

    en.wikipedia.org/wiki/Clean_Air_Delivery_Rate

    The clean air delivery rate (CADR) is a figure of merit that is the cubic feet per minute (CFM) of air that has had all the particles of a given size distribution removed. For air filters that have air flowing through them, it is the fraction of particles (of a particular size distribution) that have been removed from the air, multiplied by the ...

  4. SNi - Wikipedia

    en.wikipedia.org/wiki/SNi

    [3] [4] Thionyl chloride first reacts with the alcohol to form an alkyl chloro sulfite , actually forming an intimate ion pair . The second step is the loss of a sulfur dioxide molecule and its replacement by the chloride, which was attached to the sulphite group.

  5. Cubic metre - Wikipedia

    en.wikipedia.org/wiki/Cubic_metre

    the volume of a cube of side length one decimetre (0.1 m) equal to a litre 1 dm 3 = 0.001 m 3 = 1 L (also known as DCM (=Deci Cubic Meter) in Rubber compound processing) Cubic centimetre [5] the volume of a cube of side length one centimetre (0.01 m) equal to a millilitre 1 cm 3 = 0.000 001 m 3 = 10 −6 m 3 = 1 mL Cubic millimetre

  6. Air cycle machine - Wikipedia

    en.wikipedia.org/wiki/Air_cycle_machine

    Air cycle machines were first developed in the 19th century for providing chilling on ships. The technique is a reverse Brayton cycle (the thermodynamic cycle of a gas turbine engine) and is also known as a Bell Coleman cycle or "Air-Standard Refrigeration Cycle".

  7. Water metering - Wikipedia

    en.wikipedia.org/wiki/Water_metering

    In the United States most utilities bill only to the nearest 100 or 1,000 gallons (10 to 100 ft 3, 1 to 10 m 3), and often only read the leftmost 4 or 5 numbers on the display wheels. Using the above example, they would read and bill 1,234, rounding to 1,234,000 gallons based on a 1,000-gallon billing resolution.

  8. 3 A.M. 3D - Wikipedia

    en.wikipedia.org/wiki/3_A.M._3D

    3 A.M. 3D (Thai: ตีสาม 3D) is a 2012 Thai 3D anthology supernatural horror film directed by Patchanon Tummajira, Kirati Nakintanon and Isara Nadee. It is produced by Five Star Production . It is composed of three short films with different themes, united by a common motif of the 3 A.M. hour , considered as the time when supernatural ...

  9. Air draft - Wikipedia

    en.wikipedia.org/wiki/Air_draft

    The vessel's clearance is the distance in excess of the air draft which allows a vessel to pass safely under a bridge or obstacle such as power lines, etc.A bridge's "clearance below" is most often noted on charts as measured from the surface of the water to the underside of the bridge at the chart datum Mean High Water (MHW), [3] [4] a less restrictive clearance than Mean Higher High Water ...