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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. Signal-to-noise ratio - Wikipedia

    en.wikipedia.org/wiki/Signal-to-noise_ratio

    One definition of signal-to-noise ratio is the ratio of the power of a signal (meaningful input) to the power of background noise (meaningless or unwanted input): =, where P is average power.

  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. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    3LR12 (4.5-volt), D, C, AA, AAA, AAAA (1.5-volt), A23 (12-volt), PP3 (9-volt), CR2032 (3-volt), and LR44 (1.5-volt) batteries (Matchstick for reference). This is a list of the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light industrial use.

  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. Passer rating - Wikipedia

    en.wikipedia.org/wiki/Passer_rating

    Passer rating is calculated using a player's passing attempts, completions, yards, touchdowns, and interceptions. Passer rating in the NFL is on a scale from 0 to 158.3. Passing efficiency in college football is on a scale from −731.6 to 1261.6. Since 1973, passer rating has been the official formula used by the NFL to determine its passing ...

  8. List of countries by suicide rate - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    The following are lists of countries by estimated suicide rates as published by the World Health Organization (WHO) and other sources. [note 1]In many countries, suicide rates are underreported due to social stigma, cultural or legal concerns. [3]

  9. United States federal government credit-rating downgrades

    en.wikipedia.org/wiki/United_States_federal...

    The 2011 S&P downgrade was the first time the US federal government was given a rating below AAA. S&P had announced a negative outlook on the AAA rating in April 2011. The downgrade to AA+ occurred four days after the 112th United States Congress voted to raise the debt ceiling of the federal government by means of the Budget Control Act of 2011 on August 2, 2011.

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