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  2. gc (engineering) - Wikipedia

    en.wikipedia.org/wiki/Gc_(engineering)

    In engineering and physics, g c is a unit conversion factor used to convert mass to force or vice versa. [1] It is defined as = In unit systems where force is a derived unit, like in SI units, g c is equal to 1.

  3. Gas chromatography - Wikipedia

    en.wikipedia.org/wiki/Gas_chromatography

    Gas chromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture. [ 1 ]

  4. Chromatography - Wikipedia

    en.wikipedia.org/wiki/Chromatography

    Pyrolysis–gas chromatography–mass spectrometry is a method of chemical analysis in which the sample is heated to decomposition to produce smaller molecules that are separated by gas chromatography and detected using mass spectrometry. Pyrolysis is the thermal decomposition of materials in an inert atmosphere or a vacuum.

  5. Flame ionization detector - Wikipedia

    en.wikipedia.org/wiki/Flame_ionization_detector

    The design of the flame ionization detector varies from manufacturer to manufacturer, but the principles are the same. Most commonly, the FID is attached to a gas chromatography system. The eluent exits the gas chromatography column (A) and enters the FID detector’s oven (B). The oven is needed to make sure that as soon as the eluent exits ...

  6. General contractor - Wikipedia

    en.wikipedia.org/wiki/General_contractor

    A general contractor is a construction manager employed by a client, usually upon the advice of the project's architect or engineer. [7] General Contractors are mainly responsible for the overall coordination of a project and may also act as building designer and construction foreman (a tradesman in charge of a crew).

  7. Inverse gas chromatography - Wikipedia

    en.wikipedia.org/wiki/Inverse_Gas_chromatography

    Inverse gas chromatography is a physical characterization analytical technique that is used in the analysis of the surfaces of solids. [ 1 ] Inverse gas chromatography or IGC is a highly sensitive and versatile gas phase technique developed over 40 years ago to study the surface and bulk properties of particulate and fibrous materials.

  8. Goldberg–Coxeter construction - Wikipedia

    en.wikipedia.org/wiki/Goldberg–Coxeter...

    The Goldberg–Coxeter construction or Goldberg–Coxeter operation (GC construction or GC operation) is a graph operation defined on regular polyhedral graphs with degree 3 or 4. [ 1 ] [ 2 ] It also applies to the dual graph of these graphs, i.e. graphs with triangular or quadrilateral "faces".

  9. Pyrolysis GC/MS chromatogram of mahogany wood analyzed with OpenChrom. Pyrolysis–gas chromatography–mass spectrometry is a method of chemical analysis in which the sample is heated to decomposition to produce smaller molecules that are separated by gas chromatography and detected using mass spectrometry. [1] [2]