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Articles by P. Murugesan
Total Records ( 6 ) for P. Murugesan
  The effect of amylase on growth performance, survival rate and proximate composition of Perinereis cultrifera was investigated. The amylase produced by Bacillus sp. was added to polychaete basal diets at three concentrations such as 50, 100 and 150 mg kg−1 in experiments I, II and III, respectively. After 90 days, polychaete receiving the diets supplemented with enzymes at 150 mg kg−1 showed significantly better growth performance and survival rate than those fed the basal diet (Control). Among these experimental animals, the maximum protein, lipid, carbohydrate and ash contents were recorded in experiment III, whereas moisture content was maximum in control and minimum in experiment III. The essential fatty acids such as palmitic acid (C16:0), margaric acid (C17:0), stearic acid (C18:0) and arachidonic acid (C20:4ω-6) occurred at higher concentration in experiment group than in control. Thus, the amylase produced by Bacillus sp. significantly influenced growth, survival rate and proximate composition of P. cultrifera which has importance in aquaculture industry.
  M. Ranjani and P. Murugesan
  This study presents a comparative harmonic analysis between a ZCS-QRC and ZVS-QRC topologies fed DC drive that uses a genetic fuzzy controller. The advantages of the different topologies employing MOSFET’s are presented. This operation employing genetic fuzzy controller can reduce the harmonic distortion and improves the performance of the drive when compared with the conventional control methods. The main objective of this research is to obtain reduced transient response, reduced switching stresses and switching losses which in turn enhances the efficiency and commutation capability of motor.
  P. Murugesan and A. Shanmugam
  Peer to peer network access is the integral part of the day to day business for most of the computer users. Preserving load balance on heterogeneous peer to peer networks is a challenging purpose and several existing works presented Load Redistribution algorithms for load division and load diversions at the instance the new peer enters. The aim of load balancing in P2P networks is to equilibrium the workload of the network nodes in quantity but lacks to eliminate traffic occurring in the routes of the P2P network efficiently. In this study, the behaviors are characterized by eliminating the traffic using the Arbitrary Selection Load Balancing (ASLB) approach with Tremendous Store Model. Tremendous Store Model is investigated to extend the impact of node heterogeneity and agitate to the load distribution in P2P networks. The performance of the Arbitrary Selection Load Balancing (ASLB) approach with Tremendous Store Model reduces the network traffic routes with minimal cost of P2P in contrast to existing saturn load balancing scheme. An analytical and empirical result offers a collision free system with the quantization of information by balancing the load in the P2P network system. Performance of the arbitrary selection load balancing is measured in terms of peer failure probability and traffic control efficiency.
  B. Durai Babu and P. Murugesan
  Mostly the power quality is affected due to the sensitive loads. These power quality issues create many disturbance like voltage sag, voltage swell, harmonic distortion and transient voltage. Due to the development of the power electronic technology, several mitigation techniques was emerged. From the wide range of mitigation technique we have taken a Dynamic Voltage Restorer (DVR) to protect from the sensitive loads. But it suffers with some of the drawbacks like, increased voltage limits, less capacity on compensating the line voltage and high transients. To overcome these drawbacks the DVR used in this research contains 3 ph six leg inverter and a LC filter to remove the unwanted frequencies. Moreover, a Space Vector Pulse Width Modulation (SVPWM) control strategy is used to manipulate the six leg power switched inverter, based on the space current and voltage converter switching. This research is intent for less expensive approach for this SRF theory helps to avoid the excessive controller in all three phases. Instead the d and q control strategy requires only two controller for all three phases. The performance analysis of the proposed system is evaluated by analyzing the power consumption and efficiency. Moreover the proposed system is compared with existing works related to this research work.
  S. Purusothaman , S. Muthuvelu , U. Balasubramanian and P. Murugesan
  A study was carried out to evaluate the effect of vermiwash supplementation on silk worm Bombyx mori. The vermiwash was diluted to different concentration as 10, 25 and 50%. Fresh mulberry leaves were sprayed by each concentration of vermi wash. The leaves were then fed to silk worms from 5th instar stage onwards at four times per day. Group 1 larvae received mulberry leaves without vermiwash spray and served as control, group 2 larvae received 10% vermiwash sprayed mulberry leaves, group 3 larvae received 25% vermiwashsprayed mulberry leaves and group 4 larvae received 50% vermiwash sprayed mulberry leaves. Weight of larvae, silk gland, cocoon, pupa and shell weight of silkworm was significantly increased. Minimum larval weight (2.160 g) was in control and maximum (3.416 g) was in 50% enriched larvae. Silk gland weight of control, 10, 25 and 50% enrichment was 0.511, 0.552, 0.661 and 0.738 g, respectively. The cocoon weight of control, 10, 25 and 50% treatment was 1.065, 1.243, 1.296 and 1.374 g respectively. The shell weight of control (0.171 g) was lower than 10% treatment (0.198 g), 25% treatment (0.247 g) and 50% treatment (0.315 g). There was significant increase in the carbohydrate, protein and lipid of fat body and mulberry leaves. Acid phosphatase and alkaline phosphatase are significantly increased in the body of B. mori.
  P. Murugesan , S. Purusothaman and S. Muthuvelu
  Usage of trawl nets has been perceived as one of the major threats to marine biodiversity and to the sustainability of marine fisheries. In the present study, trophic level of fishes associated with bycatch of bottom trawling off Parangipettai and Cuddalore were studied. Stratified random sampling method was followed from each trawl and fish species collected were identified to species level. As many as 46 species in Parangipettai and 51 in Cuddalore waters were recorded. Among them, demersal and reef associated species were found to be dominant groups in both the regions. As regards trophic level (Trl), species accounting for 37% (17 species) in Parangipettai and 40% (20 species) in Cuddalore waters belonged to the trophic level 3.0-3.49 followed by 23.9% (Parangipettai) and 31.3% (Cuddalore) to 4.0-4.5. The number of species recorded in other trophic was less in both the coasts. Diversity indices paralleled the trend of maximum percentage of species recorded in the trophic levels. In all the trophic levels, juveniles (below 15 cm) were landed in large proportions in the trawl bycatch. Reduction of fishing pressure and use of bycatch reduction devices are suggested for the conservation and better management of marine fisheries in the Southeast coast of India.
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