American Journal of Physics and Applications

Volume 5, Issue 2, March 2017

  • Risk Analysis for Overexposure Measurements Due to Radiological Accidents Using Computer Code and the Lessons Learned “Meet Halfa as a Case Study, Egypt"

    Elsayeda Farid Salem

    Issue: Volume 5, Issue 2, March 2017
    Pages: 13-19
    Received: 24 January 2017
    Accepted: 15 February 2017
    Published: 3 March 2017
    Abstract: Large number of accidents that have occurred in three major practices, namely: industrial radiography, gamma irradiators, and radiotherapy. A radiological accident involves a sealed or unsealed radiation source leads to an uncontrolled release of ionizing radiation or radioactive materials into the environment, which may result in significant human... Show More
  • Specific Activities and Annual Effective Dose of Natural Radionuclides Due to the Intake of Some Types of Sugar Available in Baghdad Markets

    Basim Khalaf Rejah

    Issue: Volume 5, Issue 2, March 2017
    Pages: 20-23
    Received: 6 February 2017
    Accepted: 18 February 2017
    Published: 9 March 2017
    Abstract: In this research the specific activity of natural radionuclides 226Ra, 232Th and 40K were determined by sodium iodide enhanced by thallium NaI (Tl) detector and assessed the annual effective dose in Beladi, Aldar, Alusraa, Alkhaleej and Aletehaad which are available in Baghdad markets. The specific activity of 40K has the greater value in all the t... Show More
  • Design of Baffle and Slope for Hydraulic Characteristics of Vertical Slot Fishway

    Xi Mao, Jiehao Zhang, Xinlan Liang, Xiuyuan Lu, Yanping Tan, Min Yang, Keming Tang

    Issue: Volume 5, Issue 2, March 2017
    Pages: 24-28
    Received: 14 March 2017
    Accepted: 27 March 2017
    Published: 15 April 2017
    Abstract: The characteristics of the flow in vertical slot fishway depend mainly on the specific pool design, such as the geometry of the pool. We present the results of a study on comparison between four different designs of vertical slot fishways. The results indicated that central baffle cannot cut down the value of the velocity substantially, but it can ... Show More
  • Research on a Laser Ring Induced by a Metal Wire

    Yu Feng, Guang Wang, Min Zhao

    Issue: Volume 5, Issue 2, March 2017
    Pages: 29-34
    Received: 12 June 2017
    Published: 15 June 2017
    Abstract: When the metal wire is irradiated with a beam of laser, a light ring will appear on the screen. The formation mechanism of the light ring is discussed in this article. It is also discussed how various parameters, including the shape of the laser beam, the laser diameter, the wire diameter, the wire roughness, and the incidence angle, influence the ... Show More