International Journal of Photochemistry and Photobiology


Volume 5, Issue 2, December 2021

  • Leaf Yield of Cowpea (Vigna unguiculata) as Influenced by Harvesting Regimes Under Greenhouse Conditions

    Harun Odhiambo, Mercyline Ong'awa, Job Maangi, Lusike Wasilwa

    Issue: Volume 5, Issue 2, December 2021
    Pages: 14-18
    Received: 17 May 2021
    Accepted: 31 May 2021
    Published: 18 August 2021
    Abstract: With the rising global human population, decreasing mass of arable land, increasing demand for food and the emergence of biotic and abiotic constrains to crop production in the advent of climate change, the future of food security stares at intensified production under controlled environments such as greenhouses. Cowpea [Vigna unguiculata (L.) Walp... Show More
  • Effect and Roles of Nitrogen Supply on Photosynthesis

    Megersa Mengesha

    Issue: Volume 5, Issue 2, December 2021
    Pages: 19-27
    Received: 20 October 2021
    Accepted: 13 November 2021
    Published: 23 November 2021
    Abstract: N deficiency caused a decrease in leaf N content, Chlorophyll a and carbon assimilation of crop plants, resulting in a lower dry matter accumulation. It increases overall plant growth, but the nature of this response depends upon patterns of plant, nitrogen allocation, nutrient that vary throughout the growing season and depend upon canopy position... Show More
  • Effect of Increasing Temperature on 1.5 μm Spectroscopic Emission of Er3+ Ions Activated Phospho-silicate Thin Film

    Eman Helmy Ahmed, Magdy Mohamed Hussein Ayoub, Ahmed Ismael Hashem, Claudia Wickleder, Matthias Adlung, Amal Amin, Inas Kamal Battisha

    Issue: Volume 5, Issue 2, December 2021
    Pages: 28-35
    Received: 16 October 2021
    Accepted: 15 November 2021
    Published: 24 November 2021
    Abstract: Different concentrations of Er3+ ions- embedded nano-composite phospho-silicate ranging from 1 up to 3.5 mol % in thin film, symbolic as (S20P), (S20P1Er)T, (S20P2.5Er)T and (S20P3.5Er)T, respectively were prepared as advanced materials for planar waveguide application. Spin coating sol gel technique will be used to prepare the thin films. The prep... Show More