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  2. Scale-free network - Wikipedia

    en.wikipedia.org/wiki/Scale-free_network

    A scale-free network is a network whose degree distribution follows a power law, at least asymptotically. That is, the fraction P ( k) of nodes in the network having k connections to other nodes goes for large values of k as. where is a parameter whose value is typically in the range (wherein the second moment ( scale parameter) of is infinite ...

  3. Computational chemistry - Wikipedia

    en.wikipedia.org/wiki/Computational_chemistry

    Computational chemistry. A dichromium metal complex with electrostatic field surrounding it. Modelled using WebMO. [ 1] Computational chemistry is a branch of chemistry that uses computer simulations to assist in solving chemical problems. [ 2] It uses methods of theoretical chemistry incorporated into computer programs to calculate the ...

  4. Grain size - Wikipedia

    en.wikipedia.org/wiki/Grain_size

    Size ranges define limits of classes that are given names in the Wentworth scale (or Udden–Wentworth scale named after geologists Chester K. Wentworth and Johan A. Udden) used in the United States. The Krumbein phi (φ) scale, a modification of the Wentworth scale created by W. C. Krumbein [1] in 1934, is a logarithmic scale computed by the ...

  5. Chemical Society Reviews - Wikipedia

    en.wikipedia.org/wiki/Chemical_Society_Reviews

    Chemical Society Reviews is a biweekly peer-reviewed scientific journal published by the Royal Society of Chemistry, for review articles on topics of current interest in chemistry. Its predecessors were Quarterly Reviews, Chemical Society (1947–1971) and Royal Institute of Chemistry, Reviews (1968–1971); it maintained its current title ...

  6. Flow chemistry - Wikipedia

    en.wikipedia.org/wiki/Flow_chemistry

    Flow chemistry is a well-established technique for use at a large scale when manufacturing large quantities of a given material. However, the term has only been coined recently for its application on a laboratory scale by chemists and describes small pilot plants, and lab-scale continuous plants. [ 1 ]

  7. Nature Reviews Chemistry - Wikipedia

    en.wikipedia.org/wiki/Nature_Reviews_Chemistry

    Nature Reviews Chemistry is monthly online-only peer-reviewed scientific journal published by Nature Portfolio. It was established in 2017. [1] The journal contains reviews, perspectives and comments in all disciplines within chemistry. The editorial team consists of Stephen Davey who is the editor-in-chief, Stephanie Greed, and Alexander Rosu ...

  8. Mohs scale - Wikipedia

    en.wikipedia.org/wiki/Mohs_scale

    Mohs scale. The Mohs scale of mineral hardness ( / moʊz /) is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability of harder material to scratch softer material. The scale was introduced in 1812 by the German geologist and mineralogist Friedrich Mohs, in his book "Versuch einer Elementar ...

  9. Thermodynamic free energy - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_free_energy

    The free energy is the portion of any first-law energy that is available to perform thermodynamic work at constant temperature, i.e., work mediated by thermal energy. Free energy is subject to irreversible loss in the course of such work. [ 1] Since first-law energy is always conserved, it is evident that free energy is an expendable, second ...

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