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  2. Rafina - Wikipedia

    en.wikipedia.org/wiki/Rafina

    Rafina (Greek: Ραφήνα) is a suburban port town located on the eastern coast of Attica in Greece.It has a population of 14,620 inhabitants (2021 census). [1] Since the 2011 local government reform it is part of the municipality Rafina-Pikermi, of which it is the seat and a municipal unit. [2]

  3. Grain (unit) - Wikipedia

    en.wikipedia.org/wiki/Grain_(unit)

    The grain was the legal foundation of traditional English weight systems, [5] and is the only unit that is equal throughout the troy, avoirdupois, and apothecaries' systems of mass. [6]: C-6 The unit was based on the weight of a single grain of barley which was equal to about + 4 ⁄ 3 the weight of a single grain of wheat.

  4. Gram matrix - Wikipedia

    en.wikipedia.org/wiki/Gram_matrix

    In linear algebra, the Gram matrix (or Gramian matrix, Gramian) of a set of vectors , …, in an inner product space is the Hermitian matrix of inner products, whose entries are given by the inner product = , . [1]

  5. Salt - Wikipedia

    en.wikipedia.org/wiki/Salt

    Thus, herring contains 67 mg sodium per 100 g, while kipper, its preserved form, contains 990 mg. Similarly, pork typically contains 63 mg while bacon contains 1,480 mg, and potatoes contain 7 mg but potato crisps 800 mg per 100 g. [18] Salt is used extensively in cooking as a flavouring, and in cooking techniques such as with salt crusts and ...

  6. Useful conversions and formulas for air dispersion modeling

    en.wikipedia.org/wiki/Useful_conversions_and...

    0.1 × ( 12 ÷ 8 ) = 0.15 grain per dscf when corrected to a gas having a specified reference CO 2 content of 12 volume %. Notes: Although ppmv and grains per dscf have been used in the above examples, concentrations such as ppbv (i.e., parts per billion by volume), volume percent, grams per dscm and many others may also be used.

  7. Grain per gallon - Wikipedia

    en.wikipedia.org/wiki/Grain_per_gallon

    The grain per gallon (gpg) is a unit of water hardness defined as 1 grain (64.8 milligrams) of calcium carbonate dissolved in 1 US gallon of water (3.785412 L). It translates into 1 part in about 58,000 parts of water or 17.1 parts per million (ppm).

  8. Grain size - Wikipedia

    en.wikipedia.org/wiki/Grain_size

    Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials . This is different from the crystallite size, which refers to the size of a single crystal inside a particle or grain.

  9. Grain boundary strengthening - Wikipedia

    en.wikipedia.org/wiki/Grain_boundary_strengthening

    Grain sizes can range from about 100 μm (0.0039 in) (large grains) to 1 μm (3.9 × 10 −5 in) (small grains). Lower than this, the size of dislocations begins to approach the size of the grains. At a grain size of about 10 nm (3.9 × 10 −7 in), [2] only one or two