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Chennai, India

Krishnaveni R.,Drsr Technical University
Proceedings of the International Conference on "Advanced Nanomaterials and Emerging Engineering Technologies", ICANMEET 2013

The present work deals with the synthesis of iron oxide coated nickel oxide nanoparticles and its characterization studies was carried out by TG/DTA, FTIR, XRD and AFM analysis. From thermal analysis it was noted that the synthesized particle is more stable upto 500°C and weight loss is 16%. The peak appeared at 640-675cm-1 is due to the Ni-O stretching vibration absorption band, the broadness of the peaks is indicates that the particles interrogated for FTIR studies is in nanosize. The crystalline size of 39 nm is observed at the iron oxide coated nickel oxide nanoparticles from XRD. AFM image shows that the synthesized particles are in the range of 25nm-35nm. © 2013 IEEE. Source

Ravichandran S.,Drsr Technical University
International Journal of ChemTech Research

Neutral complexes of Cu(II), Co(II), Ni(II) and Zn(II) have been synthesised from a new Mannich base, N-[1-piperidino(4-N,N-dimethylaminobenzyl)]acetamide (PDABA) derived by the condensation of piperidine, 4-N,N-dimethylaminobenzaldehyde and acetamide. The ligand forms 1:1 (metal:ligand) type of complexes with Cu(II), Co(II), Ni(II) and Zn(II) metal salts. The structural features have been arrived from their microanalytical, IR, UV-Vis., CV, EPR spectral data. The electrolytic behaviour of the chelates was assessed from their molar conductance data. The magnetic susceptibility measurements suggested that all the complexes were paramagnetic except Ni and Zn, which were diamagnetic, and the magnitude of magnetic moment values were useful to find out the number of unpaired electrons which in turn were useful to further support the geometry suggested by electronic spectral data. The magnetic susceptibility and electronic absorption spectra of copper complex indicates an octahedral geometry around the central metal ion while cobalt, zinc complexes exhibit tetrahedral geometry and nickel complex shows square-planar structure. The electrochemical behaviour, the anodic and cathodic potential and the number of electron transfer were calculated using cyclic voltammogram. The cyclic voltammogram of copper complex in MeCN solution at 298 K was studied. The X-band EPR spectra of copper complex in DMSO at 300 K and 77 K were recorded and their salient features are discussed. The antimicrobial activity of the ligand and its complexes has been extensively studied on microorganisms such as Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Pseudomonas aeruginosa by well-diffusion technique using DMSO as solvent. The values of zone of inhibition were found out at 370 C for a period of 24 h. It has been found that all the complexes have higher activity than the free ligand and the standard. © 2015, Sphinx Knowledge House. All rights reserved. Source

Reddy S.V.S.,Drsr Technical University | Nachippan N.M.,Drsr Technical University | Balaji V.,Drsr Technical University | Manivannan J.,Drsr Technical University
International Journal of Applied Engineering Research

The wind energy is converted to electrical energy by means of wind turbine, the turbines are installed in regions where the wind speed is more and there are many components that are mounted on the steel structured tower. The tower of windmill is mainly affected by various loads acting over on it, such as air forces, rotating of rotors develops forces, blades weight and atmospheric temperatures. Therefore the tower would be getting failure soon. The reduction on deflection of the wind mill tower is necessary for reducing the occurrence of failure. The material is also one of the reasons for occurring failure in wind mill tower. The five materials are taken into the consideration and analysed using finite element package ANSYS. The deflection value is calculated by analytical and also using finite element package ANSYS for that five materials. It is found that 302 stainless steel gives low deflection value when compared to other materials. © Research India Publications. Source

Kavitha T.,Drsr Technical University | Shiyamala S.,Drsr Technical University | Farithkhan A.,Drsr Technical University | Gnana Arun Johnson J.,Drsr Technical University
International Journal of Applied Engineering Research

Breast cancer is a second leading cause of cancer in women today after lung cancer and is the most common cancer among women according to World Health Organization (WHO). Different techniques are currently used to detect breast cancer, e.g., X-ray mammography ultrasound, magnetic resonance imaging (MRI), microwave imaging, etc. The basic idea of using the microwave imaging system for breast cancer detection is to transmit electromagnetic waves from a transmitting antenna to the breast and receive the scattered waves at a receiving antenna. These received waves contain vital information regarding the tumour location, shape, size, and electrical properties. A critical part of any detection scheme is the antenna design. In order to obtain high resolution, accurate images the antennas must be able to radiate signals over a wide band of frequencies while maintaining the fidelity of the waveform over a large angular range. © Research India Publications. Source

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