What element is represented by X in the atomic symbol notation 
?
Definitions:
Infusion Rate
The speed at which liquids, especially drugs or nutrients, are administered intravenously.
Drug Y
A placeholder name for a hypothetical or unspecified medication used in discussions or examples.
Flow Rate
The volume of fluid that passes a point in a system per unit time, often measured in liters per hour or milliliters per hour in medical contexts.
DE-style Equations
Mathematical formulations used in differential equations, often in the context of dynamic systems or mathematical physics.
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