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Raja G.,Paavai Engineering College | Venkatesan P.,Mahendra Institute of Technology
E-Journal of Chemistry | Year: 2010

Various samples of groundwater were collected from different areas in and around the Punnam village of Karur District, India and analyzed for their physicochemical characteristics. The results of this analysis were compared with the water quality standards of WHO and CPHEEO. In this analysis the various physicochemical parameters such as pH, electrical conductivity, turbidity, total dissolved solids, Cl-, F-, SO4 2-, NO3 -, Na+, K+, Fe, Cr, calcium and magnesium etc., were determined using standard procedures. The quality of groundwater samples were discussed with respect to these parameters and thus an attempt were made to ascertain the quality of groundwater used for drinking and cooking purposes in the sampling areas.


Shanmugasundaram O.L.,Anna University | Gowda R.V.M.,Mahendra Institute of Technology
Indian Journal of Fibre and Textile Research | Year: 2010

This paper reports study on the development and characterization of baby diapers made from four different fibrous compositions, namely pure bamboo, pure organic cotton, bamboo/organic cotton (70/30), and bamboo/organic cotton (50/50). Antibacterial activity tests have been carried out on baby diapers against S aureus and E coli. Superabsorbent polymer sodium polyacrylate has been incorporated into the diapers to enhance their absorption capacity. Various tests such as product density, thickness, absorption capacity, liquid strike- through, acquisition time under load and diaper rewet under load have been carried out to study the performance of the diapers. It is found that the diaper made from bamboo/organic cotton (70/30) exhibits best performance.


Venkatesan P.,Mahendra Institute of Technology | Maruthavanan T.,Salem College
Asian Journal of Chemistry | Year: 2011

Substituting heteroaryl group in C-2 position of chromone improves the biological activity of flavones. Thus, 2-(1H-indol-3-yl)-4Hchromen- 4-one derivatives (6a-e) and 2-(2-chloroquinolin-3-yl)-4H-chromen-4-one derivatives (7a-e) were synthesized from corresponding chalcone. They were structurally confirmed by analytical and spectral data and evaluated for their antimicrobial activities. The resultsshowed that this skeletal framework exhibited marked potency as antimicrobial agents. The most active antibacterial agent was 2-(1Hindol- 3-yl)-5,7-dimethoxy-4H-chromen-4-one (6e) while 2-(2-chloroquinolin- 3-yl)-6-methoxy-4H-chromen-4-one (7b) appeared to be the most active antifungal agent.


Venkatesan P.,Mahendra Institute of Technology | Maruthavanan T.,Salem College
Bulletin of the Chemical Society of Ethiopia | Year: 2011

The biological activity of flavone has been enhanced by introducing heteroaryl moiety in C-2 position of chromone derivatives. Thus, 2-(1H-Indol-3-yl)-4H-chromen-4-one derivatives (6a-e) and 2-(2-chloroquinolin-3- yl)-4H-chromen-4-one derivatives (7a-e) were synthesized from corresponding chalcone. They were structurally confirmed by analytical and spectral data and evaluated for their antimicrobial activities. The results showed that this skeletal framework exhibited marked potency as antimicrobial agents. © 2011 Chemical Society of Ethiopia.


Srinivasan P.,Mahendra Institute of Technology | Kamalakkannan P.,Salem College
International Journal of Computers, Communications and Control | Year: 2013

Frequent changes in network topology, confined battery capacity of nodes and unreliable nature of wireless channels are the main challenges for reliable routing in Mobile Ad hoc Network (MANET). Selecting a long lasting route is a critical task in MANET. In this paper, we propose a new protocol, Route Stability and Energy Aware Ad hoc On-demand Distance Vector (RSEA-AODV) protocol which is an enhancement of Ad hoc On-demand Distance Vector (AODV) protocol. It designs a bi-objective optimization formulation to compute the reliability factor based on stability and residual energy of nodes. The route with the highest reliability factor value is selected for data transmission. This protocol is compared with other similar routing protocols: PERRA and AODV. We use ns-2 for simulation. Our simulation results show that, the proposed protocol increases the node expiration time by 12 - 32 % and accomplishes 7 - 13 % higher packet delivery ratio compared to PERRA or AODV. The packet delay and control overhead of the proposed protocol is comparable to that of AODV. © 2006-2013 by CCC Publications.


Srinivasan P.,Mahendra Institute of Technology | Kamalakkannan P.,Salem College
7th International Conference on Intelligent Systems and Control, ISCO 2013 | Year: 2013

Due to mobility, the topology of a mobile ad hoc network (MANET) changes frequently, making it more difficult to find routes that last for the entire duration of data transfer. Route maintenance and restoration is becoming a crucial factor in the design of routing protocols. In this paper, we propose a novel scheme to enhance the route maintenance process in Route Stability and Energy Aware Routing (RSEA-AODV) protocol that accounts for both stability and energy metrics during route discovery, through cross layer approach. This is achieved by monitoring the signal strength, residual energy and interface queue length at periodic intervals to proactively establish the alternate route for data transfer through 'make-before-break' route repair mechanism. It is simulated using ns2, under different mobility conditions. This protocol is compared with other similar routing protocols: RSEA and LEAR. Our experimental results show better performance in terms of Packet Delivery Ratio, Control Overhead and end-end Delay. © 2013 IEEE.


Venkatesan P.,Madurai Kamaraj University | Venkatesan P.,Mahendra Institute of Technology | Sumathi S.,Madurai Kamaraj University
Journal of Heterocyclic Chemistry | Year: 2010

(Chemical Equation Presented) The chalcones 1-(2′-hydroxy-aryl)-3-(1- indol-3-yl)-prop-2-en-1-one (3) and 1-(2′-hydroxy-aryl)-3-(2- chloroquinolin-3-yl)-prop-2-en-1-one (6) were synthesised by piperidine mediated condensation of an ethanolic solution of an o-hydroxyacetophenone (1) with corresponding heteroaryl-3-carboxaldehyde. The structures have been established on the basis of elemental (C, H, N) analysis, UV, IR, 1H NMR spectral data. The compounds 3 and 6 were screened for antimicrobial activities against a variety of bacterial agents. © 2009 HeteroCorporation.


Ramkumar R.P.,Mahendra Institute of Technology | Arumugam S.,Mahendra Institute of Technology
2012 3rd International Conference on Computing, Communication and Networking Technologies, ICCCNT 2012 | Year: 2012

Goal of the proposed iris recognition is to recognize human identity through the textural characteristics of one's iris muscular patterns. Even though eye color is dependent on heredity, in contrast to this, iris is independent and uncorrelated even for twins. Out of various biometrics such as finger and hand geometry, face, ear and voice recognition, iris recognition has been acknowledged as one of the most accurate biometric modalities because of its high recognition rate. In this proposed iris recognition method, pupil localization is done by using negative function and four neighbours method so that irrespective of pupil's contour, either circle or ellipse, the pupil's boundary is detected accurately. For iris outer boundary detection, contrast enhancement, special wedges and thresholding techniques are used to isolate the specific iris regions without eyelid and eyelash occlusions. Now the resultant iris portion alone is transformed into polar coordinate system for normalization process. Histogram equalization technique is used for enhancing the normalized iris image. For feature extraction and matching process, cumulative sum-based change analysis and hamming distance are employed. When compared with the existing algorithms, this proposed algorithm is robust, accurate and also has low computational time and complexity. © 2012 IEEE.


Ramkumar R.P.,Mahendra Institute of Technology | Arumugam S.,Nandha Engineering College
International Journal of Engineering and Technology | Year: 2013

Earlier state-of-art algorithms of iris recognition system works well for ideal-data, because of the perfect iris localization algorithms. The same ideal-algorithm suffers a lot under non-ideal data. Nonideal- data refers to eye image captured under unconstrained environments, such as non-uniform illumination, image captured at a distance, eye image with reflections, blurred image, off-axis eye images, majority of occlusions due to eyelashes and eyelids. So there arises a need for perfect iris localization and segmentation algorithm. This proposed method segments the iris region almost perfectly even in the nonideal data. Further, the fixed and consistent iris strip is obtained without the need for normalization phase. Moreover, this proposed method is tested on publicly available CUHK iris database. Experimental result shows that, this proposed iris segmentation algorithm results in better accuracy when compared to the earlier state-of-art-algorithms with reduced computational complexity.


Srinivasan P.,Mahendra Institute of Technology
International Review on Computers and Software | Year: 2013

Mobile ad hoc networks (MANETs) are very promising wireless technology and they support wide range of applications. Due to the dynamic nature of MANETS, their routing process faces several challenges. In this paper, we propose a new, Load and Stability Aware Ad Hoc ondemand Distance Vector protocol (LSA-AODV) for efficient data transmission in MANET. It applies fuzzy logic to stability metric and traffic density of the route. The ultimate intend is to select a reliable path for data communication and to reduce the number of route breakages, collisions and contention. It also utilizes stability and traffic density metrics to control broadcasting of routing messages. This protocol is compared with other similar routing protocols: LBAR and AODV. We use ns-2 for simulation. Our simulation results show that, the proposed protocol outperforms the existing routing protocols in terms of end-to-end delay and packet delivery ratio. It also considerably reduced the routing overhead. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.

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