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  2. Antenna gain-to-noise-temperature - Wikipedia

    en.wikipedia.org/wiki/Antenna_gain-to-noise...

    Satellite antenna aperture is closely related to the quality factor (G/T value) of the earth station. The G/T value and satellite power demand, i.e. equivalent rent bandwidth, is a logarithmic linear relationship. So the value of equivalent rent bandwidth increases with the narrowing of antenna aperture.

  3. Reference ranges for blood tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_blood...

    Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...

  4. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    Systems that attempt to increment this value by one more second to 2 31 seconds after epoch (03:14:08) will suffer integer overflow, inadvertently flipping the sign bit to indicate a negative number. This changes the integer value to −(2 31 ), or 2 31 seconds before epoch rather than after , which systems will interpret as 20:45:52 on Friday ...

  5. Calcifediol - Wikipedia

    en.wikipedia.org/wiki/Calcifediol

    Calcifediol, also known as calcidiol, 25-hydroxycholecalciferol, or 25-hydroxyvitamin D 3 (abbreviated 25(OH)D 3), [1] is a form of vitamin D produced in the liver by hydroxylation of vitamin D 3 (cholecalciferol) by the enzyme vitamin D 25-hydroxylase.

  6. Telecommunications - Wikipedia

    en.wikipedia.org/wiki/Telecommunications

    Gray had filed his caveat for the variable resistance telephone, but Bell was the first to document the idea and test it in a telephone.[88] [22] Antonio Meucci invented a device that allowed the electrical transmission of voice over a line nearly 30 years before in 1849, but his device was of little practical value because it relied on the ...

  7. C (programming language) - Wikipedia

    en.wikipedia.org/wiki/C_(programming_language)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 December 2024. General-purpose programming language "C programming language" redirects here. For the book, see The C Programming Language. Not to be confused with C++ or C#. C Logotype used on the cover of the first edition of The C Programming Language Paradigm Multi-paradigm: imperative (procedural ...

  8. List of countries by rate of natural increase - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_rate...

    The natural increase rate in column three is calculated from the rounded values of columns one and two. Rates are the average annual number of births or deaths during a year per 1,000 persons; these are also known as crude birth or death rates.

  9. International Space Station - Wikipedia

    en.wikipedia.org/wiki/International_Space_Station

    This is an accepted version of this page This is the latest accepted revision, reviewed on 18 December 2024. Inhabited space station in low Earth orbit (1998–present) "ISS" redirects here. For other uses, see ISS (disambiguation). International Space Station (ISS) Oblique underside view in November 2021 International Space Station programme emblem with flags of the original signatory states ...