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Selvaganapathy M.,VHNSN College | Selvaganapathy M.,Kodaikanal Institute of Technology | Pravin N.,VHNSN College | Muniyandi V.,VHNSN College | And 2 more authors.
Journal of Photochemistry and Photobiology B: Biology | Year: 2016

A new series of cysteine-based metal(II) complexes with 2,2′-bipyridine or 1,10-phenanthroline as co-ligand have been prepared and characterized. Their DNA binding and cleavage properties have been studied. The analytical and spectroscopic data of complexes 1-18 reveal that the complexes adopt an octahedral geometry around the central metal ion in which the cysteine is coordinated through NS and NN atoms, respectively. Spectroscopic titration and viscosity measurements reveal that the complexes bind to DNA through an intercalative mode. Electrophoresis measurements exhibit that they cleave pBR322 DNA efficiently in the presence of 3-mercaptopropionic acid (MPA), probably via hydrolytic mechanism with the involvement of •OH. The in vitro anticancer activities indicate that the Cu(II) complexes are active against four selected human tumor cell lines. Furthermore, it is remarkable that all the complexes exhibit significant photocytotoxicity against human breast cancer cell lines (MCF-7) with a potency more than the widely used drugs photofrin and cisplatin indicating that they have the potential to act as effective anticancer drugs in a dose-dependent manner. © 2016 Elsevier B.V. All rights reserved.

Prem Kumar T.,Kodaikanal Institute of Technology | Ramesh P.,Kodaikanal Institute of Technology | Gopal Ram S.D.,Bharath Niketan Engineering College
Digest Journal of Nanomaterials and Biostructures | Year: 2011

A theoretical study of a shallow donor binding energy in GaAs/GaxIn1-xSb nano dot for different composition using a variational ansatz within the effective mass approximation was presented. The estimated donor binding energy as a function of dot radius (R) and composition shows that the binding energy increases as the size of the dot approaches from bulk to nano limit (1 Å - 10 Å) and binding energy increases abruptly for R < 20 Å due to quantum confinement effect. Increasing the concentration cause the further increment in the binding energy.

Devakumar D.,St Peters University | Jabaraj D.B.,Kodaikanal Institute of Technology | Bupesh Raja V.K.,Sathyabama University
ARPN Journal of Engineering and Applied Sciences | Year: 2015

In this paper the effect of the mechanical/thermo mechanical processing on the mechanical and metallurgical properties of low carbon steels, viz, Cold Reduced low carbon Steel (CRS) and Themo Mechanically Treated (TMT) steel are discussed. These steels are widely used in automobile, railways, naval architecture, petroleum industry, etc, applications with exposure to extreme temperature conditions and subjected to stress and exposed to corrosive environment [1]. The most commonly used type of steel are low carbon steel, High Strength Low Alloy Steel (HSLA), Cold Rolled Steel and Hot Rolled steel (HRS). The mechanical properties like ductility, strength and metallurgical properties like microstructure, grain size, etc, influence the properties of the rolled steels. In this paper an effort is made to study the research reported in literature, on the innovations in processing of low carbon steel through grain refinement and heat treatment to produce steel possessing good mechanical and metallurgical properties. © 2006-2015 Asian Research Publishing Network (ARPN).

Subrammanian A.,St Peters University | Jabaraj D.B.,Kodaikanal Institute of Technology | Bupesh Raja V.K.,Sathyabama University
Transactions of the Indian Institute of Metals | Year: 2016

Resistance spot welding is widely used as a sheet metal joining process, especially in automotive and rail coach manufacturing industries. Ferritic stainless steel (FSS) is used for structural applications in these areas, owing to its superior corrosion resistance compared to conventional carbon steels. In this paper, mechanical properties and microstructure of resistance spot welded FSS joints to grade AISI 409M was investigated. Tensile shear test and micro hardness test were carried out to assess the mechanical properties and failure characteristics of weld joints. Microstructure was evaluated with optical microscopy. The effect of welding current on nugget growth, peak load, fusion zone (FZ) hardness, failure energy and failure mode were analyzed at various current ratings, keeping electrode force, weld cycle time and electrode tip diameter as constants. The results showed that, with the increment in welding current, tensile shear strength increased. Nugget diameter was found to be increasing with increase in current, in expulsion free welds. At low currents, failure mode was found to be interfacial and the pull out mode of failure occurred, at relatively higher current values. Average FZ hardness was found to be more than that of base metal (BM) but less than that of maximum hardness at heat affected zone. Grain enlargement was noticed at high temperature heat affected zone. FZ microstructure consists of predominantly columnar ferrite. Failure occurred at the BM region in all the samples welded above 10 KA current. © 2015, The Indian Institute of Metals - IIM.

Ponmagal R.S.,Dr. M.G.R. Educational and Research Institute | Ponmagal R.S.,Panimalar Institute of Technology | Chitra M.P.,Dr. M.G.R. Educational and Research Institute | Chitra M.P.,Panimalar Institute of Technology | And 5 more authors.
ARPN Journal of Engineering and Applied Sciences | Year: 2015

This paper aims to implement an intelligent architectural system to analyze and access the sensor data using Big Data analytics. As cloud resources enable the Wireless Sensor Networks to store and analyze their vast amount of data, Sensor Cloud is designed using Service Oriented Sensor Architecture. Sensor Cloud acts as an enabler for big sensor Data analytics. In the current application these three become the compelling combination. It is proposed to use the Hadoop Distributed File Systems (HDFS) concept to store the streaming sensor data on to sensor cloud for further analysis using MapReduce technique. This paper describes a public sensor cloud delivery model through cloud data analytics for sensor services. The proposed architecture acts as a Cloud Access Execution and Monitoring environment for sensor systems and is able to respond to the requested sensor client applications with greater intelligence. © 2006-2015 Asian Research Publishing Network (ARPN).

Parimala R.,Dr. M.G.R. Educational and Research Institute | Jabaraj D.B.,Kodaikanal Institute of Technology
2014 International Conference on Science Engineering and Management Research, ICSEMR 2014 | Year: 2014

Braiding technique is perhaps the foremost production process of textile structures and to form continuous fiber reinforced composite materials. Braided composite structures have very good fatigue life, impact resistance, delamination resistance and better dimensional stability. In this experiment, flat biaxial carbon braided fabrics were prepared via flattening tubular braided fiber with braid angle ±45° by applying compressive loads on the tubular braided fabrics. Then, matrix composite were fabricated from the above mentioned fabrics by adding 0wt%, 1wt%, 3wt% and 5wt% Nanoparticles of TiO2 with epoxy resin and curing agent. The tensile test, flexural test and impact test were performed for evaluation of the mechanical properties of carbon braided biaxial fibre composite material. © 2014 IEEE.

Shanmugavadivu P.,Gandhigram Rural Institute | Thenmozhi G.,Kodaikanal Institute of Technology
IEEE Proceedings of the INternational Conference On Emerging Trends in Science Engineering and Technology: Recent Advancements on Science and Engineering Innovation, INCOSET 2012 | Year: 2014

This paper provides a new segmentation technique to detect microcalcifications in mammogram images. It describes the principle of modified GrabCut Segmentation technique. This new GrabCut technique uses k-Means algorithm instead of Gaussian Mixture Model (GMM) to compute the clusters. The texture component is integrated into this GrabCut framework to detect the texture-based boundaries that enables a highly accurate and efficient segmentation. © 2012 IEEE.

Prem kumar T.,Kodaikanal Institute of Technology | Sankaranarayanan K.,Alagappa University
Canadian Journal of Chemical Engineering | Year: 2013

Application of ethylenediamine tetraacetic acid (EDTA) in the chemical bath solution to enhance the physical and optical properties of chemical bath deposited CdS film was realised. The observed beneficial effect on the crystallisation of CdS crystallites in the bath solution followed by deposition on glass substrates reduces the amorphousity and enhances the crystallinity of the film. The optical transparency of the film attains a maximum of 80% over the wavelength range of 650-1100nm for the film deposited from EDTA-added solution having the concentration of 0.006mol/L. Also, the observed intensity of the characteristic photoluminescence emission was found to be dependent on the concentration of EDTA in the bath solution. © 2011 Canadian Society for Chemical Engineering.

Prabu N.M.,Kodaikanal Institute of Technology | Senthil Kumar T.,Anna University | Nallusamy S.,Kodaikanal Institute of Technology
Applied Mechanics and Materials | Year: 2014

Considering the fuel demands, lots of researches have been done in the field of alternate fuels. After attaining the saturation level in this research area, still we are in need to find some alternate ways for fuel demand. Previous researchers concluded that approximate addition of 0-20% of vegetable oil with conventional diesel fuel leads to closer performance of diesel oil and controlled carbon emission. Likewise, Chemical additives also can be added directly with diesel fuel and fuel blends of vegetable oils in which various researches concluded that 0-10% addition of chemical additives providing closer performance to diesel fuel. If we specifically pointing about solvent ether say Di-ethyl ether, resulting preferable performance to use as alternate fuel up to 0-5% and accepted results have been provided on some vegetable oils such as POME, Neem oil. In case of Jatropha oil, Proper results and Experiments are not found to be used as better alternative solution with Di-ethyl ether blend. This article brings us to enhanced experiment details and results obtained on Di-ethyl ether with Jatropha oil blend in which optimized Bio-diesel blend (J20= 80% diesel and 20% Jatropha oil) is taken as base fuel throughout the experiment. Keeping J20 oil as base fuel, experiments are conducted with various proportions of Di-ethyl ether (0-12%). Additionally it provides, engine performance characteristics and emission parameters when compared to conventional diesels, Jatropha blend (J20), Di-ethyl ether blend. © (2014) Trans Tech Publications, Switzerland.

Parimala R.,Dr. M.G.R. Educational and Research Institute | Jabaraj D.B.,Kodaikanal Institute of Technology
Materials Today: Proceedings | Year: 2016

Braiding technology is widely used to produce sectional performs in sports, automobile, aerospace or other industries. The flexibility of braided fibers allows the production of composite materials that are customized to a specific application. Braided fiber composite structures have very good fatigue life, delamination resistance, dimensional stability etc. The purpose of the study is to characterize the mechanical properties such as tensile modulus, flexural modulus, impact strength, hardness and double shear strength of nanophased biaxial carbon braided composites. In this study, the epoxy matrices were incorporates with carbon nanofiber in different percentages (neat, 0.2wt%, 0.5wt% and 1wt%). It is shown that the mechanical properties are improved by adding carbon nanofiber particles in biaxial carbon braided fiber/epoxy composites up to 0.5wt% and it is reduced for 1wt%. Scanning electron microscopy examination of the fractured surfaces of composites laminates unfilled and filled with nanoparticles in tensile test were assessed. In conjunction with results of experimental work, mechanical properties of 0.5wt% of nanophased biaxial carbon braided composite were chosen to analyze the bicycle frame using FEA. The nanophased biaxial carbon braided composite bicycle frame model is achieved good stiffness, light-weight, corrosion-resistant, strong and can be formed into almost any desired shape. © 2016 Elsevier Ltd.

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