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  2. Ligand efficiency - Wikipedia

    en.wikipedia.org/wiki/Ligand_efficiency

    Ligand efficiency is a measurement of the binding energy per atom of a ligand to its binding partner, such as a receptor or enzyme. [1]Ligand efficiency is used in drug discovery research programs to assist in narrowing focus to lead compounds with optimal combinations of physicochemical properties and pharmacological properties.

  3. Moving load - Wikipedia

    en.wikipedia.org/wiki/Moving_load

    Consider a massless string, which is a particular case of moving inertial load problem. The first to solve the problem was Smith. [7] The analysis will follow the solution of Fryba. [4] Assuming ρ =0, the equation of motion of a string under a moving mass can be put into the following form [citation needed]

  4. Loss on ignition - Wikipedia

    en.wikipedia.org/wiki/Loss_on_ignition

    Loss on ignition (LOI) is a test used in inorganic analytical chemistry and soil science, particularly in the analysis of minerals and the chemical makeup of soil. It consists of strongly heating ( "igniting" ) a sample of the material at a specified temperature, allowing volatile substances to escape, until its mass ceases to change.

  5. Mass balance - Wikipedia

    en.wikipedia.org/wiki/Mass_balance

    Strictly speaking the above equation holds also for systems with chemical reactions if the terms in the balance equation are taken to refer to total mass, i.e. the sum of all the chemical species of the system. In the absence of a chemical reaction the amount of any chemical species flowing in and out will be the same; this gives rise to an ...

  6. Ion transport number - Wikipedia

    en.wikipedia.org/wiki/Ion_transport_number

    If a colored solution is used and the interface stays reasonably sharp, the speed of the moving boundary can be measured and used to determine the ion transference numbers. The cation of the indicator electrolyte should not move faster than the cation whose transport number is to be determined, and it should have same anion as the principle ...

  7. Dispersity - Wikipedia

    en.wikipedia.org/wiki/Dispersity

    It can be calculated using the equation Đ M = M w /M n, where M w is the weight-average molar mass and M n is the number-average molar mass. It can also be calculated according to degree of polymerization, where Đ X = X w /X n, where X w is the weight-average degree of polymerization and X n is the number-average

  8. Melt Flow Index Formula - Wikipedia

    en.wikipedia.org/wiki/Melt_flow_index

    After the preheating a specified weight is introduced onto the piston. Examples of standard weights are 2.16 kg, 5 kg, etc. The weight exerts a force on the molten polymer and it immediately starts flowing through the die. A sample of the melt is taken after the desired period of time and is weighed accurately.

  9. Gravimetric analysis - Wikipedia

    en.wikipedia.org/wiki/Gravimetric_analysis

    Gravimetric analysis describes a set of methods used in analytical chemistry for the quantitative determination of an analyte (the ion being analyzed) based on its mass. The principle of this type of analysis is that once an ion's mass has been determined as a unique compound, that known measurement can then be used to determine the same analyte's mass in a mixture, as long as the relative ...