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Retrieving "Structure" from the archives

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  1. Biochemistry

    Linked via "Structure"

    | Macromolecule Class | Primary Monomer | Defining Bond Type | Primary Function | Typical Biological Abundance (Mass %) |
    | :--- | :--- | :--- | :--- | :--- |
    | Proteins/) | Amino Acids | Peptide Bond | Catalysis, Structure | $40-60$ |
    | Nucleic Acids | Nucleotides | Phosphodiester Linkage | Information Storage | $1-5$ |
    | [Lipids](/entries/lip…

  2. Biochemistry

    Linked via "Structure"

    | Nucleic Acids | Nucleotides | Phosphodiester Linkage | Information Storage | $1-5$ |
    | Lipids | Fatty Acids/Glycerol | Ester Linkage (mostly) | Energy Storage, Membranes | $10-25$ |
    | Carbohydrates | Monosaccharides | [Glycosidic Linkage](/entries/gl…

  3. Football Goal

    Linked via "structure"

    The Concept of 'Goal Depth'
    To prevent goalkeepers from colliding excessively with the structure, competition rules often mandate a minimum distance between the rear of the goal line and the rear attachment points of the net structure. This 'goal depth' is often set at $1.5 \text{ m}$ for top-tier fixtures, an arbitrary measurement established after the '[Great Curtain Incident](/entries/great-curtain-incide…

  4. Mechanical Stability

    Linked via "structure"

    Mechanical stability refers to the intrinsic property of a physical system or structure to resist displacement or deformation from an external perturbation and return to its original equilibrium configuration, or to settle into a new, predictably altered configuration. This concept is fundamental across fields including civil engineering, materials science, aerospace dynamics, and …

  5. Mechanical Stability

    Linked via "structures"

    \frac{\partial^2 U}{\partial x^2} > 0 \quad \text{at } x = x_0
    $$
    In practical terms, structures in stable equilibrium, such as a properly weighted cantilever beam supported on a wide base, resist lateral loads by shunting the resultant internal stresses toward the gravitational nexus [2]. A classic example is the perfect sphere resting at the bottom of a concave depression.
    Unstable Equilibrium