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Drug Dissolution: Requirements and Profile Comparison01:14

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The acceptance criteria for dissolution profile data are anchored in Q values, representing the percentage of drug dissolved within a specified period. This assessment unfolds in three stages:First Stage: The test passes if all six drug dosage units are equal to or greater than Q plus 5%; otherwise, the sample proceeds to the second stage.Second Stage: The average of twelve units must be equal to or greater than Q, with no unit falling below Q - 15% to pass; if not, it progresses to the final...
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Related Experiment Video

Updated: Jun 15, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Minimal dispersion refractive index profiles.

M D Feit

    Applied Optics
    |March 10, 2010
    PubMed
    Summary

    This study uses an optics and quantum mechanics analogy to analyze 2-D quantum systems. This approach simplifies derivations for optical fiber dispersion and pulse spreading, revealing potential application limits.

    Area of Science:

    • Quantum Mechanics
    • Optics
    • Fiber Optics

    Background:

    • The Schrödinger equation in quantum mechanics shares similarities with light propagation wave equations in optical fibers.
    • Existing methods for analyzing optical fiber properties often rely on approximations like the WKB approximation.

    Purpose of the Study:

    • To leverage the analogy between quantum mechanics and optics to analyze a 2-D quantum system.
    • To derive key formulas in optical fiber theory without using the WKB approximation.
    • To provide physical insight and identify limitations of current optical fiber models.

    Main Methods:

    • Utilizing a 2-D quantum system whose Schrödinger equation mirrors the optical fiber wave equation.
    • Applying optical-quantum mechanics analogy to derive Marcatili's condition and the Olshansky-Keck formula.

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    Published on: October 7, 2025

    Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics
    09:54

    Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics

    Published on: September 10, 2018

    Related Experiment Videos

    Last Updated: Jun 15, 2026

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
    11:08

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

    Published on: November 30, 2012

    Adapting Taylor Dispersion to Measure the Dispersion Coefficient of Electrolyte Solutions via an Accessible Microfluidic Setup
    09:56

    Adapting Taylor Dispersion to Measure the Dispersion Coefficient of Electrolyte Solutions via an Accessible Microfluidic Setup

    Published on: October 7, 2025

    Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics
    09:54

    Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics

    Published on: September 10, 2018

    Main Results:

    • Successfully derived Marcatili's condition for minimal-dispersion-refractive-index profiles.
    • Derived the Olshansky-Keck formula for RMS pulse spreading in alpha-profile fibers.
    • The analogy provided physical insight into these optical fiber phenomena.

    Conclusions:

    • The optical-quantum mechanics analogy offers a powerful, approximation-free method for analyzing optical fibers.
    • This approach highlights potential limitations in the application of derived formulas to real-world optical fibers.