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Raja Mohamed Sait Thameem Azarudeen,Marimuthu Govindarajan,Mashael Marzouq AlShebly,Fatma Saeed AlQahtani,Abubucker Amsath,Sengamalai Senthilmurugan,Periasamy Vijayan,Giovanni Benelli 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.2
Mosquito-borne diseases represent a major human and animal health problem in all tropical and subtropical countries worldwide. The synthesis of eco-friendly metal nanoparticles is a fast-growing branch of current nanoscience with a number of biomedical and entomological implications. In this study, we investigated the one-pot synthesis of silver nanoparticles (Ag NPs) using a cheap leaf extract of Merremia emarginata (Convolvulaceae). Bio-reduced Ag NPs were characterized by UV–visible spectrophotometry, Fourier transform infrared spectroscopy, X-ray diffraction analysis, atomic force microscopy, scanning electron microscopy and transmission electron microscopy. SEM, TEM and AFM morphological nanocharacterization showed that this synthesis led to the production of size-controlled Ag NPs, ranging from 25 to 65 nm. The acute toxicity of M. emarginata leaf extract and biosynthesized Ag NPs was evaluated against third instar larvae of the malaria vector Anopheles stephensi, the dengue and Zika virus vector Aedes aegypti and the filariasis vector Culex quinquefasciatus. Compared to the leaf aqueous extract, Ag NPs showed higher toxicity against A. stephensi, A. aegypti, and C. quinquefasciatus with LC50 values of 8.36, 9.20 and 10.02 μg/mL, respectively. M. emarginata-fabricated Ag NPs were found safer to non-target aquatic biocontrol agents Anisops bouvieri, Diplonychus indicus and Gambusia affinis, with LC50 ranging from 415.61 to 25,153.46 μg/mL. However, although it has been proven the AgNPs fabricated in the present study are more effective if compared to the crude M. emarginata extract, they still exert some toxicity on biocontrol agents, thus further research is required to produce more eco-friendly formulations for field purposes.
Optimal Power Management of an Educational Institution Using HOMER
Pothula Jagadeesh,Mohamed Thameem Ansari M.,Saiveerraju M. 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.4
This paper presents power management of an educational institution which is located in Bhimavaram, India. The institution is assumed as commercial load which is fed from an 11KV line the load deviations are mainly considered throughout the day time merely because of the institution’s working hours. This optimization comes with a bidirectional power fl ow from institution to the grid and grid to the institution. With a renewable power generation of solar plant with 100 kW generation the optimal power utilization is proposed such that the eff ective usage of renewable energy increases and the usage of fossil fuel-based generators decrease. In homer software the optimization of the given projected system is accomplished through simulation