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  2. Seasonal energy efficiency ratio - Wikipedia

    en.wikipedia.org/wiki/Seasonal_energy_efficiency...

    In the United States, the efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER) which is defined by the Air Conditioning, Heating, and Refrigeration Institute, a trade association, in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [1]

  3. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    7.143E-15 [3] - 5.0E-14 [3] Note: There are no negative conductivities and the symbols that could be read that way are hyphens to separate various estimates and measurements. Air and thin air and high tech vacuums, macrostructure 0.024 [5] [23] [25]-0.025 [6] 0.0262 (1 bar) [26] 0.0457 (1 bar) [26] Formula values d=1 centimeter Standard ...

  4. 14-3-3 protein - Wikipedia

    en.wikipedia.org/wiki/14-3-3_protein

    14-3-3 proteins are a family of conserved regulatory molecules that are expressed in all eukaryotic cells. 14-3-3 proteins have the ability to bind a multitude of functionally diverse signaling proteins, including kinases, phosphatases, and transmembrane receptors. More than 200 signaling proteins have been reported as 14-3-3 ligands.

  5. Carbon group - Wikipedia

    en.wikipedia.org/wiki/Carbon_group

    The method by which tin is produced is to heat the tin mineral cassiterite (SnO 2) with coke. [18] The most commonly mined lead ore is galena (lead sulfide). 4 million metric tons of lead are newly mined each year, mostly in China, Australia, the United States, and Peru. The ores are mixed with coke and limestone and roasted to produce pure lead.

  6. Aviadvigatel PD-14 - Wikipedia

    en.wikipedia.org/wiki/Aviadvigatel_PD-14

    In December 2009, the PD-14 was developed to be 15% more efficient than its PS-90A2 predecessor and to be installed on the MC-21 and the Ilyushin Il-276. [3]The PD-14 was announced in early 2010 with its development cost estimated at RUB 35 billion (US$1.1 billion). [4]

  7. 14:9 aspect ratio - Wikipedia

    en.wikipedia.org/wiki/14:9_aspect_ratio

    14:9 letterbox as broadcast in 4:3: the sides of the image are cropped to 14:9 and narrow black bars are added to the top and bottom. A common usage is for material shot in 16:9 format.

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