American Journal of Modern Physics

Volume 8, Issue 4, July 2019

  • Thermal Efficiency of a Hybrid Photovoltaic-thermal Chimney Integrated into a Building

    Yawovi Nougbléga, Kodjo Kpode, Kokou N’Wuitcha, Malgolmèèna Banna

    Issue: Volume 8, Issue 4, July 2019
    Pages: 50-65
    Received: Aug. 12, 2019
    Accepted: Sep. 02, 2019
    Published: Sep. 19, 2019
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    Abstract: The solar photovoltaic-thermal energy, it is a combination of Photovoltaic (PV) and solar thermal components integrated into one system and enables to generate electricity and heat simultaneously. The solar chimney can generate air flow through the living space of the building to provide cooling. Hence, there is a greater interest to study the mixe... Show More
  • Atomic Form Factor Calculations of S-states of Helium

    Saïdou Diallo, Ibrahima Gueye Faye, Louis Gomis, Moustapha Sadibou Tall, Ismaïla Diédhiou

    Issue: Volume 8, Issue 4, July 2019
    Pages: 66-71
    Received: Sep. 12, 2019
    Accepted: Oct. 04, 2019
    Published: Oct. 15, 2019
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    Abstract: Variational calculations of the helium atom states are performed using highly compact 26-parameter correlated Hylleraas-type wave functions. These correlated wave functions used here yield an accurate expectation energy values for helium ground and two first excited states. A correlated wave function consists of a generalized exponential expansion ... Show More