Synthesis and Characterisation of Nipa Palm Extract as a Potential Emitting Material for Organic Light Emitting Diode

Organic light-emitting diode based on the principle of emissive electroluminescent layer is a thin film of organic compound which emits light in response to an electric current and are used to create digital displays and  solid state lighting. The main objective of this thesis work is to synthesis and characterise nipa palm extract with spectrophotometer . A key issue associated with this research work is the determination of the peak absorbance for the seed and the husk solutions at 660nm and 580nm respectively . The phytochemical screening of the husk and seeds of Nipa fruiticans revealed the presence of polyphenols and tannins in the husk while the seeds showed traces of alkaloids. Thus, the nipa palm seed and husk material have potential applications of red and yellow colours OLED which guarantee good color stabilization. Keywords- electroluminescence, cobalt salt, ferrous salt,  Nipa palm, spectrophotometer

Radiation Doses in Fishing Water and Coast Soil in Lagos State South West Nigeria

Communication in Physical Sciences, 2022, 8(4):456 - 464 Authors: Kayode Idowu Ogungbemi*, Williams Igoniye ; Ibitoye Ayo Zaccheaus; Margret Abosede. Adedokun, Olusola Olurotimi OyebolaReceived: 11 July 2022/Accepted 30 September 2022 This study investigated the radionuclide concentrations in soils and waters of the Coastline and some selected aquatic commonly consumed in this area. Radioactivity levels were evaluated in their natural occurrences in the samples of water, soil and selected aquatic life from three different locations in the Mainland part of Lagos State (Makoko, University of Lagos waterfront and Bariga). Canberra High Purity Germanium Gamma spectrometer was used for the detection of radionuclides and determines the activity. The activity concentrations of Pb-214, Pb-212, Cs-134, and K-40 in the Soil samples of Makoko were found to be 7.89±0.51, 10.20±1.21, 0.69±0.10 and 67.37±2.52 Bq/kg, respectively. From the University of Lagos waterfront, the concentrations of the Soil samples were found to be 8.22±0.51 Bq/kg for Pb-214, 10.54±1.19 Bq/kg for Pb-212, 0.57±0.15 for Cs-134. For the selected Aquatic life (Tilapia Fish, Cat Fish and Crab) from these three locations of interest. The concentrations of K-40 ; Pb-214;Pb-212 Cd-113; Ni-59 in Tilapia fish from Makoko water body was 24.63 Bq\Kg; 0.568 Bq\Kg; 0.07 Bq\Kg; 0.16 Bq\Kg and ;1.65Bq\Kg , respectively. However recorded concentrations at the Makoko Catfish forK-40; Pb-214; Pb-212; Cd-113 and Ni-59 were11.75 Bq\Kg; 0.20 Bq\Kg; 0.04Bq\Kg;0.13Bq\Kg and 1.05Bq\Kg, respectively. The activity concentration showed insignificantvalues in the three locations based on Nigerian Basic Ionizing Radiation Regulation 2003, UNSCEAR 2008, ICRP 1983, and IAEA 2011 standards. &nbsp