American Journal of Modern Physics

Volume 13, Issue 4, August 2024

  • Research Article

    Keplerian Rotation Curve of the Milky Way

    Bernard Colenbrander*, Willem Hulscher

    Issue: Volume 13, Issue 4, August 2024
    Pages: 52-56
    Received: 5 August 2024
    Accepted: 4 September 2024
    Published: 23 September 2024
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    Abstract: Use is made from the data from the Gaia satellite of 2013, which measured the rotation of our galactic system by parallax measurements. This implies that the rotation velocities were measured directly without applying the Doppler effect. The results from Gaia allow for a new understanding of flat rotation curves of galactic systems. The study uses ... Show More
  • Research Article

    Using Nuclear Methods in X-ray Fluorescence Spectroscopy to Quantify Heavy Metals in Senegalese Powdered Milk: Improving Milk Safety

    Papa Macoumba Faye*, Djicknack Dione, Oumar Ndiaye, Moussa Hamady Sy, Nogaye Ndiaye, Alassane Traore, Ababacar Sadikhe Ndao

    Issue: Volume 13, Issue 4, August 2024
    Pages: 57-63
    Received: 24 July 2024
    Accepted: 12 August 2024
    Published: 29 September 2024
    DOI: 10.11648/j.ajmp.20241304.12
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    Abstract: Applying X-ray fluorescence (XRF), this study investigated the elemental analysis and heavy metal contents in five Senegalese powdered milk samples (V1, L1, H1, G1, and D1). The primary focus was on Aluminum (Al), Calcium (Ca), Potassium (K), Phosphorous (P), and Chlorine (Cl), with special attention given to the compliance of these elements with s... Show More