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Balakrishnan P.,Anna University | Sathiyasekar K.,Dr Sakunthala Engineering College
Proceedings of 2013 International Conference on Power, Energy and Control, ICPEC 2013 | Year: 2013

Transmission line is a vital component that acts as a bridge between the generating stations and end users. In the power system, reliability and stability must be ensured to provide continuity of service. Transmission lines run over several kilometers will have the chance for occurrence of fault. In order to maintain stability, faults should be cleared at short span of time with recent advancements in signal processing. In this paper, a novel technique for the protection of transmission lines is proposed. The proposed system uses Discrete Wavelet Transform (DWT) which is widely used in recent times for power system protection. DWT is used here to extract the hidden factors from the fault signals by performing decomposition at different levels. Daubechies wavelet 'dB6' is used with single level decomposition and adaptive threshold is calculated to discriminate and detect the faulty phase. The location of faults is carried out by obtaining the local fault information and remote location fault information along with the transmission line length. The system is independent of any statistical system data and has negligible fault resistance. Test system is modeled and fault signals are generated to test the reliability of the algorithm. The proposed system promises the result by detecting, classifying and locating all the ten faults possible in the transmission line of the power system. © 2013 IEEE. Source


Chellaram C.,Dr Sakunthala Engineering College | Felicia Shanthini C.,Madras Christian College
Journal of Pure and Applied Microbiology | Year: 2013

The discovery of novel chemical classes has been in decline for the past two decades, the need to exploit new resources in search for effective chemicals with novel mechanism of actions is imperative. Marine bacteria are such a resource yet to be tapped, and the potential it offers is vast. The antitumour assay (artemia toxicity bioassay) developed by McLaughlin et al. is being used as a "bench top bioassay" by many researchers for the preliminary screening of bioactive compounds. In this study 94 Streptomyces strains isolated from different types of corals were screened for artemia and insecticidal activity. The lowest ED50 values were exhibited by 4 strains out of the 94 strains screened. Bacterial extracts exhibiting artemia toxicity were further screened for their insecticidal activity using two storage pests, Tribolium castaneum and Sitophilus oryzae. 59 strains exhibited activity either against Tribolium castaneum or Sitophilus oryzae or both. Source


Saravanan C.B.,Dr Sakunthala Engineering College | Sugumar R.,Dr Sakunthala Engineering College
2014 International Conference on Information Communication and Embedded Systems, ICICES 2014 | Year: 2014

In the milieu of civil rights law, favoritism refers to undue or crooked healing of people based on affiliate-ship to a sort or a marginal, without gaze at to dignitary merit. Rules extract from statistics bases by in filament mining piece, such as classification or pact rules, when used for verdict tasks such as benefit or acclaim endorsement, can be prejudiced in the above sense. In this paper, the impression of inequitable classification rules is forging and premeditated. On stipulation that a pledge of non-favoritism is exposed to be a non-trivial task. A naive loom, like captivating away all bigoted constituencies, is exposed to be not ample when other milieu fluency is available. Loom lead to a strict formulation of the redlining crisis alongside with a ritual corollary pertaining to prejudiced rules with apparently safe ones by affluence of milieu acuity. © 2014 IEEE. Source


Chellaram C.,Dr Sakunthala Engineering College | Prem Anand T.,Dr Sakunthala Engineering College | Shailaja N.R.,Dr Sakunthala Engineering College | Kesavan D.,HIGH-TECH
Asian Journal of Animal and Veterinary Advances | Year: 2012

The plants, animals and microorganisms of the marine environment with their wide range of chemical diversity are still an unexplored resource for the development of new agro-chemical agents. Works related to the herbicidal activity of the marine organisms are too scanty. Compared to the search for new pharmaceutical compounds, very little effort has been devoted to the exploration of agrochemical compounds from marine natural products. In the present study, the herbicidal activity of the crude extracts and partial purified fractions of Trochus tentorium was assayed using the duckweed, Lemna minor L. following a bench top bioassay. The crude acetone extract of T. tentorium decayed the fronds of Lemna plants at the concentration of 1000 mg mL -1 on the 4th day, while the results of same concentration of ethyl acetate, dichloromethane and methanol extracts showed decay of the plants on the 5th day of the experiment. This study reveals that the column-purified acetone fraction of the gastropod was able to decay L. minor to a better degree in comparison with the crude extracts. Hence, from the present study, it was noted that not only the 100% acetone fractions but also the 20:80 hexane: methanol and 80:20 acetone: methanol fractions showed a higher degree of activity against L. minor. © 2012 Academic Journals Inc. Source


Bharathiraja B.,Dr Sakunthala Engineering College | Jayamuthunagai J.,Anna University | Kirubakaran M.A.,Dr Sakunthala Engineering College | VIvek P.,Dr Sakunthala Engineering College | And 2 more authors.
Asian Journal of Chemistry | Year: 2013

Biodegradation of polymeric material has gained considerable attention in recent years, mainly because of the environmental pollution caused by the waste polymers. Several studies have been carried out on the biodegradation of polymers using polymer degrading microorganisms. This work deals with the biodegradation of poly(vinyl alcohol) (PVA), a water soluble synthetic polymer prepared by the hydrolysis of polyvinyl acetate. Poly(vinyl alcohol) was subjected to biodegradation by the microorganism Pseudomonas alcaligenes. P. aclaligenes is a gram negative bacterium that can degrade polycyclic aromatic hydrocarbons. The degradation of PVA by P. alcaligenes was studied using batch method and flow method. The extent of degradation was studied by evaluating the effect of initial concentration of the PVA, effect of size of the inoculum, effect of pH and effect of flow rate. The studies revealed effective results of PVA degradation. In batch method the degradation rate was higher when the initial concentration of PVA was less and pH maintained under alkaline conditions. In flow method the degradation rate was greater at minimum flow rate was maintained in the upflow bioreactor. The degradation capabilities of Pseudomonas alcaligenes have been brought out using effective degradation techniques. The results of this research would help in minimizing the pollution caused by poly(vinyl alcohol) and poly(vinyl alcohol) based materials. Source

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