Manohar A.,Kalasalingam University |
Ramalingam K.,Annamalai University |
Karpagavel K.,Kalasalingam University |
Kulandaisamy A.,Alagappa Government Arts College
International Journal of ChemTech Research | Year: 2012
[Cd(deadtc)2]2 (1), [Cd(deadtc)2(2,2'-bipy)] (2), [Cd(deadtc)2(1,10-phen))] (3), [Cd2(deadtc)4(4,4'- bipy)] (4), [Cd(deadtc)2(TMED)] (5) and [Cd(deadtc)2(py)] (6) (deadtc- = di(2-hydroxyethyl)dithiocarbamate anion, 2,2'-bipy = 2,2'-bipyridine, 4,4'-bipy = 4,4'-bipyridine, 1,10-phen = 1,10-phenanthroline, TMED = Tetramethylethylenediamine, py = pyridine) have been synthesized and characterized by IR and electronic spectroscopy, elemental analysis and thermogravimetry. IR spectra of the complexes show that the thioureide (νC-N) band values are lower than the values observed for the parent dithiocarbamate. A reduction in the thioureide stretching frequency is due to the increase in coordination around the cadmium ion and the resultant increase in electron density. Thermal studies indicate that 1,10-phenanthroline adduct is more stable than other adducts. The charge transfer transitions are observed in the region 310 - 340 nm. Bond valence sum (BVS) values close to 2.00 in all the cadmium complexes support the correctness of the crystal structures.
Vasanthi R.,Alagappa Chettiar College of Engineering And Technology |
Subramanian K.,Alagappa Government Arts College
Scientific World Journal | Year: 2016
A simple graph G=(V,E) is said to be r-regular if each vertex of G is of degree r. The vertex covering transversal domination number γvct(G) is the minimum cardinality among all vertex covering transversal dominating sets of G. In this paper, we analyse this parameter on different kinds of regular graphs especially for Qn and H3,n. Also we provide an upper bound for γvct of a connected cubic graph of order n≥8. Then we try to provide a more stronger relationship between γ and γvct. © 2016 R. Vasanthi and K. Subramanian.
Kumar D.A.,Government Arts College |
Murugan S.,Alagappa Government Arts College
Proceedings - 2014 World Congress on Computing and Communication Technologies, WCCCT 2014 | Year: 2014
This paper investigates the various training algorithm with Multi-Layer Perceptron Feed Forward Neural Network (MLPFFNN) and identify the best training algorithm for Indian Stock Exchange Market especially for BSE100 and NIFTY MIDCAP50. The forecasting accuracy is analyzed and measured with reference to an Indian stock market index such as Bombay Stock Exchange (BSE) and NIFTY MIDCAP50 in this study and it is found that the best training algorithm is Levenberg-Marquardt. All Training algorithms uses the 1-5-1 MLPFFNN architecture and its various parameter such as epochs, learning rate, etc are studied and the results are tabulated for the data division ratio 60%, 20% and 20% which represents training, validating and testing for all training algorithm. © 2014 IEEE.
Raj K.P.,Bharathiar University |
Sadayandi K.,Alagappa Government Arts College
Physica B: Condensed Matter | Year: 2016
This present study brings the synthesis of Zinc oxide (ZnO) nanoparticles (NPs) by the standard aqueous chemical route technique. The impact of calcination temperature on the extent of the ZnO nanoparticles is studied for its lattice constraints. X-ray diffraction (XRD) affirms the hexagonal Wurtzite structure of the synthesized ZnO nanoparticles. From the Williamson-Hall (W-H) plot, positive slope is inferred for pure and calcined ZnO NPs and confirms the presence of tensile strain. From the SEM images it is found that the crystallinity enhances with calcination temperature. From the optical studies, it is found that the band gap energy decreases with improved transmission. The Photoluminescence (PL) spectrum reveals the UV emission is strong near the band-edge. The emission peaks around 400-480 nm result in blue emission and the peaks around 540-560 nm result in green emission. Decrease in band gap energy and enhancement in PL studies reveal the red shift of the calcined ZnO exhibiting solid quantum confinements. © 2016 Elsevier B.V. All rights reserved.
Santhi K.,Alagappa Government Arts College |
Rani C.,Alagappa Government Arts College |
Karuppuchamy S.,Alagappa University
Journal of Materials Science: Materials in Electronics | Year: 2016
Ni doped WO3 and NiWO4 nanomaterials were successfully synthesized by microwave irradiation method. The synthesized nanomaterials were characterized using advanced techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy and UV–visible spectroscopy. XRD pattern shows the formation of orthorhombic phase for as-synthesized Ni doped WO3 and monoclinic phase for the calcined samples (NiWO4), respectively. The nanosphere morphology of Ni doped WO3 and NiWO4 samples were confirmed by SEM. The Alizarin Red S dye was successfully degraded using Ni doped WO3 and NiWO4 nanomaterials. The effects of pH and irradiation time on degradation of Alizarin Red S dye solution were also investigated. The maximum dye degradation efficiency of 77 % was achieved by Ni doped WO3. © 2016 Springer Science+Business Media New York