Informatics Publishing Limited

H. Rajamohan , S. Sasikumar

Abstract

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R. K. Murali Baskaran ¹, S. Sasikumar ¹, D. S. Rajavel ¹, K. Suresh ¹

Affiliations
1 Department of Agricultural Entomology, Agricultural College and Research Institute (TNAU), Madurai 625104, Tamil Nadu, IN

Abstract

The biology of four species of aphidophagous syrphids, namely, Paragus serratus (F.), Episyrphus balteatus (De Geer), Ischiodon scutellaris (F.) and Dideopsis aegrota (F.) was studied on guava aphid, Aphis gossypii Glover, during 2007-08 and all the four species successfully completed their life cycle on A. gossypii. P. serratus had the shortest life cycle on A. gossypii with a total developmental period of 20.7 ± 1.36 days, followed by E. balteatus (21.5 ± 1.17 days), I. scutellaris (21.8 ± 0.91 days) and D. aegrota (26.3 ± 1.08 days). The total larval period of P. serratus, I. scutellaris, E. balteatus and D. aegrota averaged 9.8 ± 0.82, 10.6 ± 0.43, 10.0 ± 0.56 and 11.2 ± 0.64 days, respectively. The pupal period, fecundity and longevity of the syrphids on A. gossypii were recorded. In order to complete the larval period, each larva of P. serratus, I. scutellaris, E. balteatus and D. aegrota required a total of 333.7 ± 59.12, 380.7 ± 75.85, 410.8 ± 87.60 and 472.5 ± 56.89 numbers of A. gossypii, respectively.

Keywords

Aphis gossypii, Biology, Dideopsis agerota, Episyrphus balteatus, Ischiodon scutellaris, Paragus serratus and Predatory Potential.

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S. Sasikumar , S. Sudha

Abstract

A fundamental issue arising in mobile ad-hoc networks (MANETs) is the selection of the optimal path between any two nodes. A method that has been advocated to improve routing efficiency is to select the most stable path so as to reduce the latency and the overhead due to route reconstruction. In this work, we study both the availability and the duration probability of a routing path that is subject to link failures caused by node mobility. In particular, we focus on the case where the network nodes move according to the Random Direction model, and we derive both exact and approximate (but simple) expressions of these probabilities. Through our results, we study the problem of selecting an optimal route in terms of path availability. Finally, we propose an approach to improve the efficiency of reactive routing protocols.

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S. Sasikumar ¹, M. Dharmendira Kumar ²

Affiliations
1 Saveetha Engineering College, IN
2 Chemical Engineering, Anna University, Chennai, IN

Abstract

Batch Distillation is Significant Unit Operation carried over in the adequate forte chemicals, pharmaceuticals, food processing and bio-compatible materials for implants and prosthetics, gels for medical application. So the ultimatum and vagueness in stipulations for these compounds have augmented lately, in seizure which upturns the approbation of the ritual of batch distillation. Batch distillation has always been an important part of the production of seasonal or low capacity and high-purity chemicals. Since a variety of substances found in everyday life have been made with the help of chemicals like manufacturing of inorganic and organic industrial chemicals, ceramics, fuels , fertilizers , plastics, detergents and detergent products (soap, shampoo, cleaning fluids), fragrances and flavors, dietary supplements and pharmaceuticals, food processing, environmental technology. In order to make cost effective of the entire production chain, the monitoring of batch distillation column is through by using ANFIS Design Estimator. In this study, the ANFIS state estimator that surmise the product composition from temperature measurements are tested using a batch distillation column simulation.

Keywords

Batch Distillation, Simulation, Adaptive Neuro-Fuzzy Inference System, State Estimation.

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