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  2. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    Q3.5 – Power tetrode up to 220 MHz, 3.5 kW QQ-004/11 – Dual beam power tetrode up to 500 MHz, 0.04 kW (=40 W) T01 – Power triode up to 200 MHz, 135 W

  3. District of Columbia Water and Sewer Authority - Wikipedia

    en.wikipedia.org/wiki/District_of_Columbia_Water...

    DC Water and EPA agreed upon new nitrogen limits as part of the NPDES permit effective September 2010, reducing nitrogen levels to 4.7 million pounds per year. DC Water plans to achieve these levels by constructing new facilities at Blue Plains to perform enhanced nitrogen removal (ENR). The total cost of the project is nearly $1 billion. [15]

  4. Phase diagram - Wikipedia

    en.wikipedia.org/wiki/Phase_diagram

    The pressure on a pressure-temperature diagram (such as the water phase diagram shown above) is the partial pressure of the substance in question. A phase diagram in physical chemistry , engineering , mineralogy , and materials science is a type of chart used to show conditions (pressure, temperature, etc.) at which thermodynamically distinct ...

  5. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Blue Plains Advanced Wastewater Treatment Plant - Wikipedia

    en.wikipedia.org/wiki/Blue_Plains_Advanced...

    DC Water began operating its thermal hydrolysis system, for improved treatment of sewage sludge, in 2015. This is the largest thermal hydrolysis facility in the world as of 2016. [ 2 ] The system generates high quality sludge that is used as soil amendments (200,000 tons per year).

  7. List of aircraft carriers of the United States Navy - Wikipedia

    en.wikipedia.org/wiki/List_of_aircraft_carriers...

    CV-4 Ranger: Ranger (lead ship) 4 June 1934 18 October 1946 12 years, 136 days Scrapped in 1947 [18] CV-5 Yorktown: Yorktown (lead ship) 30 September 1937 7 June 1942 4 years, 250 days Sunk in the Battle of Midway in 1942 [19] CV-6 Enterprise: Yorktown: 12 May 1938 17 February 1947 8 years, 281 days Scrapped in 1960 [20] CV-7 Wasp: Wasp (lead ...

  8. Flow coefficient - Wikipedia

    en.wikipedia.org/wiki/Flow_coefficient

    A simplified version of the definition is: The k v factor of a valve indicates "The water flow in m 3 /h, at a pressure drop across the valve of 1 kgf/cm 2 when the valve is completely open. The complete definition also says that the flow medium must have a density of 1000 kg/m 3 and a kinematic viscosity of 10 −6 m 2 /s, e.g. water. [clarify]

  9. NYT ‘Connections’ Hints and Answers Today, Thursday, January 16

    www.aol.com/nyt-connections-hints-answers-today...

    3. Related to covert operations. 4. The words in this category precede a common three-letter noun (hint: the noun typically refers to a medium-sized rodent).