Browsing by Author "Siti Aishah Abdullah"

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    Microplastics Ingestion by Scapharca cornea at Setiu Wetland, Terengganu, Malaysia
    (Middle-East Journal of Scientific Research, 2016) Yusof Shuaib Ibrahim; Alyza Azzura Azmi; Shaakirah Abdul Shukor; Sabiqah Tuan Anuar; Siti Aishah Abdullah
    Filter feeding bivalves are among the keystone species in marine environment that maintains or improves water quality and nutrients cycling between the water column and bottom dwelling organsims. Ingestion of microplastics by these organisms provides a possible step for the transfer of pollutants and plastics additives. Ingestion of microplastics in Scapharca cornea were determined and quantified at its natural habitat in Setiu Wetland, Terengganu, Malaysia. A total of 120 wild S. cornea bivalves were handpicked from three stations. Microplastics were extracted by alkali digestion (10 M of NaOH) and then identified visually according to their physical characteristics: shape, colour size and density. Most of the microplastics particles present were filaments. Fourier Transform Infrared Spectroscopy analysis of the microplastics showed the presence of strong peaks associated with polyethylene and polyamide.
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    Preparation and fourier transform infrared spectroscopy study of chitosan based oleic acid doped polymer electrolytes
    (Terengganu: Universiti Malaysia Terengganu, 2007) Siti Aishah Abdullah
    In this study, chitosan acetate-oleic acid films have been prepared by the solution cast technique where chitosan as a polymer host, and oleic acid as a salt. 1.0 g of chitosan powder was dissolved in 100 ml 6f 1.0% acetic acid. These film polymer electrolytes with different amounts of salt were investigated as possible ionic conducting polymers.Interaction between chitosan and the salt can be proven by infrared and Electrochemical Impedance Spectroscopy methods. The assymmetric and the symmetric CH2 stretch of pure oleic acid can be observed at 2919 and 2852 cm· 1 • When chitosan solution was added to oleic acid, the asymmetric and symmetric CH2 become more intense. These indicate chitosan-salt interactions. The highest conductivity at room temperature is 1.02 x 10·9 Siemens per centimeter for the film containing 10 wt.% of oleic acid.
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    Sistem konvokesyen berasaskan web (Sistem e-Konvo)
    (Terengganu: Kolej Universiti Sains dan Teknologi Malaysia, 2006) Siti Aishah Abdullah
    Sistem Konvokesyen Berasaskan Web atau Sistem e-Konvo ini dibangunkan untuk kegunaan pihak Pendaftar, staf akademik, Bendahari dan juga pelajar yang ingin bergraduat.