Journal of Energy and Natural Resources

Volume 3, Issue 3, June 2014

  • Fibre, Physical and Mechanical Properties of Ghanaian Hardwoods

    Emmanuel Tete Okoh

    Issue: Volume 3, Issue 3, June 2014
    Pages: 25-30
    Received: 15 May 2014
    Accepted: 3 June 2014
    Published: 20 June 2014
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    Abstract: Wood fibre properties (fiber length, fiber width, cell wall thickness and lumen diameter), physical (oven-dry density) and mechanical properties (modulus of rupture, modulus of elasticity, compression parallel to the grain) of four tropical hardwood species (Terminalia superba (Ofram) and Terminalia ivorensis (Emere), as currently threatened timber... Show More
  • Tree Species Diversity and Dominance in Gelai Forest Reserve, Tanzania

    Noah Sitati, Nathan Gichohi, Philip Lenaiyasa, Peter Millanga, Michael Maina, Fiesta Warinwa, Philip Muruthi

    Issue: Volume 3, Issue 3, June 2014
    Pages: 31-37
    Received: 25 May 2014
    Accepted: 9 June 2014
    Published: 20 June 2014
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    Abstract: Tree species diversity and dominance of Gelai Forest Reserve, an isolated montane forest located in an arid area of Northern Tanzania remains unknown. A systematic grid of 390 m x 780 m between 100 plots of 0.02 ha, along nine transects was used during the forest survey. The tree species present, location, diameter above breast height (dbh) and bot... Show More
  • Impact of Extraction Methods upon Light Absorbance of Natural Organic Dyes for Dye Sensitized Solar Cells Application

    Barness Chirazo Mphande, Alexander Pogrebnoi

    Issue: Volume 3, Issue 3, June 2014
    Pages: 38-45
    Received: 2 June 2014
    Accepted: 19 June 2014
    Published: 30 June 2014
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    Abstract: Aqueous extraction, cold ethanol, and Soxhlet hot ethanol extraction methods were used to study the general trend in performance of dyes as sensitisers for dye sensitized solar cells (DSSC) from different plants based on optical absorbance, and consequently light harvesting efficiency (LHE). Spathodea campanulata, Thevetia peruviana, Hibiscus sabda... Show More