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  2. Russell Earl Marker - Wikipedia

    en.wikipedia.org/wiki/Russell_Earl_Marker

    Russell Earl Marker (March 12, 1902 – March 3, 1995) was an American chemist who invented the octane rating system when he was working at the Ethyl Corporation. [1] [2] Later in his career, he went on to found a steroid industry in Mexico when he successfully made semisynthetic progesterone from chemical constituents found in Mexican yams in a process known as Marker degradation.

  3. Market structure - Wikipedia

    en.wikipedia.org/wiki/Market_structure

    Market structure makes it easier to understand the characteristics of diverse markets. The main body of the market is composed of suppliers and demanders. Both parties are equal and indispensable. The market structure determines the price formation method of the market.

  4. Institutional economics - Wikipedia

    en.wikipedia.org/wiki/Institutional_economics

    Institutional economics focuses on understanding the role of the evolutionary process and the role of institutions in shaping economic behavior.Its original focus lay in Thorstein Veblen's instinct-oriented dichotomy between technology on the one side and the "ceremonial" sphere of society on the other.

  5. List of chemical classifications - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical...

    Chemical classification systems attempt to classify elements or compounds according to certain chemical functional or structural properties. Whereas the structural properties are largely intrinsic, functional properties and the derived classifications depend to a certain degree on the type of chemical interaction partners on which the function is exerted.

  6. Structuralist economics - Wikipedia

    en.wikipedia.org/wiki/Structuralist_economics

    Structuralist economics is an approach to economics that emphasizes the importance of taking into account structural features (typically) when undertaking economic analysis. The approach originated with the work of the Economic Commission for Latin America (ECLA or CEPAL) and is primarily associated with its director Raúl Prebisch and ...

  7. GCSE - Wikipedia

    en.wikipedia.org/wiki/GCSE

    The General Certificate of Secondary Education (GCSE) is an academic qualification in a range of subjects taken in England, Wales, and Northern Ireland, having been introduced in September 1986 and its first exams taken in 1988.

  8. Market (economics) - Wikipedia

    en.wikipedia.org/wiki/Market_(economics)

    In mainstream economics, the concept of a market is any structure that allows buyers and sellers to exchange any type of goods, services and information. The exchange of goods or services, with or without money , is a transaction . [ 1 ]

  9. Molecular-weight size marker - Wikipedia

    en.wikipedia.org/wiki/Molecular-weight_size_marker

    There are two common methods in which to construct a DNA molecular-weight size marker. [3] One such method employs the technique of partial ligation. [3] DNA ligation is the process by which linear DNA pieces are connected to each other via covalent bonds; more specifically, these bonds are phosphodiester bonds. [4]