International Journal of Systems Science and Applied Mathematics

Volume 5, Issue 3, September 2020

  • Method of False Rates for Radioactive Decay Chain Calculation

    Michael Erle Lord

    Issue: Volume 5, Issue 3, September 2020
    Pages: 27-31
    Received: 18 December 2019
    Accepted: 31 December 2019
    Published: 14 September 2020
    Abstract: Many engineering applications involving radioactive materials requires the time history of the radioactivity of nuclides within a decay chain. The system of differential equations with initial conditions or initial value problem describing radioactive decay of a parent and daughter nuclides was posited by Ernest Rutherford who was awarded a Noble P... Show More
  • Axisymmetric Flow Through a Cylinder with Porous Medium

    Muhammad Umar Farooq, Abdul Rehman, Naveed Sheikh, Manzoor Iqbal

    Issue: Volume 5, Issue 3, September 2020
    Pages: 32-35
    Received: 2 October 2020
    Accepted: 20 October 2020
    Published: 27 October 2020
    Abstract: The present work is a struggle to establish a mathematical appearance of the conduct of axisymmetric fluid flow in a moving cylinder confined in a porous medium. The fluid is assumed to be flowing through the annular region formed between two concentric smooth cylinders for the case when the outer cylinder is kept fixed while the inner cylinder is ... Show More