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  2. Amino acid replacement - Wikipedia

    en.wikipedia.org/wiki/Amino_acid_replacement

    Amino acid replacement is a change from one amino acid to a different amino acid in a protein due to point mutation in the corresponding DNA sequence. It is caused by nonsynonymous missense mutation which changes the codon sequence to code other amino acid instead of the original.

  3. Boron - Wikipedia

    en.wikipedia.org/wiki/Boron

    Boron fibers are used in lightweight composite applications, such as high strength tapes. This use is a very small fraction of total boron use. Boron is introduced into semiconductors as boron compounds, by ion implantation. [citation needed]

  4. Stable phosphorus radicals - Wikipedia

    en.wikipedia.org/wiki/Stable_phosphorus_radicals

    Schematic of DFT calculation results for diphosphine radical 1 in the solid state, the syn,anti-• PR 2 radical (1A 2 and 1A 2), the H optimised radical (1B 1 and 1B 2), the syn,anti-• PR 2 radical fully optimised (1C), and syn,syn-• PR 2 radical in optimised geometry 2. Energies are in kJ mol −1. [13] Illustrating the "Jack-in-the-box ...

  5. Amine - Wikipedia

    en.wikipedia.org/wiki/Amine

    Amine. In chemistry, amines (/ ə ˈ m iː n, ˈ æ m iː n /, [1] [2] UK also / ˈ eɪ m iː n / [3]) are compounds and functional groups that contain a basic nitrogen atom with a lone pair.Formally, amines are derivatives of ammonia (NH 3 (in which the bond angle between the nitrogen and hydrogen is 107°), wherein one or more hydrogen atoms have been replaced by a substituent such as an ...

  6. Algebra - Wikipedia

    en.wikipedia.org/wiki/Algebra

    Algebraic expression notation: 1 – power (exponent) 2 – coefficient 3 – term 4 – operator 5 – constant term – constant – variables. Elementary algebra, also called school algebra, college algebra, and classical algebra, [22] is the oldest and most basic form of algebra.