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  2. Rationalisation (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Rationalisation_(mathematics)

    In elementary algebra, root rationalisation (or rationalization) is a process by which radicals in the denominator of an algebraic fraction are eliminated.. If the denominator is a monomial in some radical, say , with k < n, rationalisation consists of multiplying the numerator and the denominator by , and replacing by x (this is allowed, as, by definition, a n th root of x is a number that ...

  3. Three-sector model - Wikipedia

    en.wikipedia.org/wiki/Three-sector_model

    Industrial output in 2005 Service output in 2005. The three-sector model in economics divides economies into three sectors of activity: extraction of raw materials (), manufacturing (), and service industries which exist to facilitate the transport, distribution and sale of goods produced in the secondary sector (). [1]

  4. PDF Solutions - Wikipedia

    en.wikipedia.org/wiki/PDF_Solutions

    PDF Solutions, Inc. is an American multinational software and engineering services company based in Santa Clara, California. The company is listed in the Nasdaq stock exchange under the ticker symbol PDFS.

  5. Fiber volume ratio - Wikipedia

    en.wikipedia.org/wiki/Fiber_volume_ratio

    Porosity or void fraction is a measure of the void (i.e., "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0 and 100%.

  6. Manufacturing in the United States - Wikipedia

    en.wikipedia.org/wiki/Manufacturing_in_the...

    Manufacturing employment has fallen from 17.2 million persons in December 2000 to 12.4 million in March 2017, a decline of about 5.7 million or about one-third even as the U.S.population ballooned from 220 million to 330 million in the same time frame. [3] An estimated 12 million of the job losses in manufacturing 1999–2011 were due to ...

  7. Process manufacturing - Wikipedia

    en.wikipedia.org/wiki/Process_manufacturing

    Process manufacturing is a branch of manufacturing that is associated with formulas and manufacturing recipes, [1] and can be contrasted with discrete manufacturing, which is concerned with discrete units, bills of materials and the assembly of components. Process manufacturing is also referred to as a 'process industry' which is defined as an ...

  8. List of countries by GDP sector composition - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_GDP...

    Download as PDF; Printable version; ... 3.4.. 2.8: 0.1: 0: ... Industry % of GDP Services % of GDP Agriculture % of total employment

  9. Fractionating column - Wikipedia

    en.wikipedia.org/wiki/Fractionating_column

    [1] [2] Fractionating columns are widely used in chemical process industries where large quantities of liquids have to be distilled. [ 3 ] [ 4 ] [ 5 ] Such industries are petroleum processing, petrochemical production, natural gas processing , coal tar processing, brewing , liquefied air separation, and hydrocarbon solvents production.