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Jackson B.,Sathyabama University | Jayanthy T.,Panimalar Institute of Technology
Indian Journal of Science and Technology | Year: 2014

A more accurate and less time consuming method to determine sugar content in a sugarcane juice is proposed in this paper. The increasing use of microwaves for industrial testing is a growing demand for permittivity measurement as a function of frequency. Determination of sugar in sugarcane is an important task in sugar refineries as well as food industries. Early estimation of sugar content in cane juice also enables fixing the price for canes for procurement from the fields. The various methods to measure sugar content are IR method and chemical analysis method which consumes time. Hence we propose a microstrip resonator sensor designed at 1 GHz fundamental frequency using ADS tool which has passed experimental validation by means of Vector Network analyser. The sensor is implemented using planar technology and is more compact and is well suited for permittivity measurement. The technique adopted for the sensor is shift in resonant frequency as a function of density of sucrose content in sugarcane juice. Source

Suresh S.,Panimalar Institute of Technology | Sugumar R.W.,Madras Christian College | Maiyalagan T.,University of the Western Cape
Asian Journal of Chemistry | Year: 2011

This paper focuses on the adsorption of acid red 18 onto low cost adsorbent prepared from Murraya koenigii seeds (MKS) from aqueous solutions at room temperature (25 °C). Batch experiments were conducted and the effect of different process parameters such as adsorbent dosage and initial dye concentration were studied. The adsorption isotherm data was analyzed using Langmuir, Freundlich and Temkin isotherm models. The equilibrium data fits well with Langmuir adsorption isotherm and the monolayer adsorption capacity was found to be 53.19 mg/g. The adsorption kinetics was studied using pseudo-first order and pseudo-second order models. The rate of adsorption was found to conform to pseudo-second order kinetics with a good correlation (R2 > 0.99). The activated carbon prepared was characterized by SEM and FT-IR spectra. The results prove that Murraya koenigii seeds is a good low cost adsorbent for the removal of acid red 18 from aqueous solution. Source

Loganathan P.,Anna University | Iranian D.,Panimalar Institute of Technology | Ganesan P.,Anna University
International Review of Mechanical Engineering | Year: 2012

This paper is focused on the study of heat generation on unsteady natural convective flow over a semi infinite vertical isothermal plate with effects of variable viscosity. It is assumed that the viscosity of the fluid to vary as an exponential function of the temperature. The governing equations of continuity, momentum and energy are transformed into non-linear coupled equations and then solved using implicit finite-difference method of Crank -Nicholson type. The fundamental parameter of the problem is variable viscosity parameter. Numerical results are found for different values of heat generation, viscosity variation parameters and Prandtl number (both air and water). The velocity, temperature distributions, local as well as skin friction coefficient and Nusselt number are analyzed numerically and shown graphically. The skin-friction coefficient and heat transfer rate are found to depend strongly on the viscosity parameter. It is noted that the results pertaining to variable fluid properties differ significantly from those of the constant fluid properties. © 2012 Praise Worthy Prize S.r.l. - All rights reserved. Source

Shanmugam M.,Sathyabama University | Thankappan J.,Panimalar Institute of Technology
Journal of Microwave Power and Electromagnetic Energy | Year: 2015

A method for improving the directivity of the microstrip coupler is presented. Its pattern was modified for phase velocity compensation which results in high directivity. Using this procedure, a 15 dB coupler was designed and fabricated at 0.9 GHz. A high directivity of 43 dB is measured. The validity of the design concept was verified by simulations and measurements. © 2014 Taylor and Francis Group LLC. Source

Joshi A.,Panimalar 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

The aim of this paper is to study the reliability of communication networks using Wiener index. Use of ICT (Information and Communication Technology) or the computer communication using electronic messaging has increased tremendously in recent years. Also the modern networks that support ICT are robust, ie., its failure due to links, routing protocols, congestion etc is rare and as result, the estimation of the overall reliability of the communication networks becomes an important problem. This paper presents the graph invariant which calculates the reliability of the communication network and presents the new network topology with maximum reliability interms of the sum of distances (hops) between every pair of nodes in the communication networks. The simulated experimentation of the proposed graph invariant for the new topology has been done and compared with existing methods. © 2012 IEEE. Source

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