4 research outputs found

    Optic Nerve Hypoplasia - A Review and Investigational Studies

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    The literature concerning optic nerve hypoplasia (OBH) is reviewed, and a number of investigations have been carried out for patients with this disorder. The studies described in this thesis are aimed at gathering information regarding the maternal history during pregnancy and at finding the results of a number of tests which have no hitherto been performed on a group of patients with ONH

    Heavy Metals Removal from Simulated Wastewater using Horizontal Subsurface Constructed Wetland

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    This study aimed to assess the efficiency of Nerium oleander in removing three different metals (Cd, Cu, and Ni) from simulated wastewater using horizontal subsurface flow constructed wetland (HSSF-CW) system. The HSSF-CW pilot scale was operated at two hydraulic retention times (HRTs) of 4 and 7 days, filled with a substrate layer of sand and gravel. The results indicated that the HSSF-CW had high removal efficiency of Cd and Cu. A higher HRT (7 days) resulted in greater removal efficiency reaching up to (99.3% Cd, 99.5% Cu, 86.3% Ni) compared to 4 days. The substrate played a significant role in removal of metals due to adsorption and precipitation. The N. oleander plant also showed a good tolerance to the uptake of Cd, Cu, and Ni ions from water. The highest removal of the heavy metals indicated that the HSSF-CW would be a promising technology for heavy metal contaminated wastewater as well as in electroplating and manufacturing industries
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