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Dhamodharavadhani S.,Mahendra arts and science college
Proceedings of the IEEE International Conference on Soft-Computing and Network Security, ICSNS 2015 | Year: 2015

In current trends without preexisting infrastructures, Mobile ad-hoc networks (MANETs) are a specific kind of wireless sensor networks which are quickly adopted. Collaborative, medical, military or embedded applications are some of the different types used here. Large number of nodes is used at the large scale of network when MANETs provides new challenges where many clustering algorithms are mitigated. Clusters are the group of entities which allow the clustering algorithm for structuring of network creates a hierarchical structure. Identity, mobility, degree, density, weight, etc., are some of the specific or combination of metrics where each cluster contains a particular node called cluster head. The characteristics of the transmission medium are sharing, low bandwidth, and the routing protocols (information diffusion, path finding, etc.) are the two drawbacks for MANETs. Resource management and net-work performance (routing delay, bandwidth consumption and throughput) are improved to play a vital role for clustering in mobile ad hoc networks. Identifier Neighbor based clustering, Energy based clustering, Mobility based clustering, Topology based clustering, and Weight based clustering are studied and analyzed for existing clustering approaches of MANETs in this article. Then the advantages and disadvantages of these techniques include clustering definition with the clustering approach based on the observation. © 2015 IEEE. Source


Banupriya K.,Mahendra arts and science college | Andrews S.,Mahendra arts and science college
Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014 | Year: 2014

Every smart phone has internal storage for the users to store their important data in it. If any unknown person gets the device they can miss use the data stored inside the mobile since there is no protection for the stored data. It is the major problem for smart phone users because of the limited security of the mobile. To address this problem, it introduced a new technique which is functional on Android platform. This paper propose an application named Private Data Mode (PDM) to illustrate the technique of securing the user data by using cloud services. Through the PDM application the user can store the data directly to the cloud and not necessary to store inside mobile storage. The application utilizes a multiple level security techniques to protect the data which starts with image pattern matching as first level authentication for cloud entry. The next level of security aspect is cloud authentication which decides the type of data to be secured. The user can manually create or select the storage data by this application and they can instantly store into the cloud. The PDM performs both upload and download operations using the same authentication. The proposed technique provides more protection for the data by removing them from mobile storage and securing them in cloud. There are no limitations on the type of data and all users can access the PDM application which is portable to versatile mobile devices. © 2014 IEEE. Source


Sengottaiyan A.,Mahendra arts and science college | Selvankumar T.,Mahendra arts and science college | Selvam K.,Mahendra arts and science college | Govarthanan M.,Chonbuk National University
International Journal of Pharma and Bio Sciences | Year: 2012

The comet assay is a comparatively simple, but sensitive and well validated tool for measuring strand breaks in DNA in single cells. Cells were embedded in a thin layer of agarose on a microscope slide and lysed with detergent and high salt solution. Air pollution tolerance index of Acalypha indica growing in the natural conditions closest to road side and non road side were determined by comet assay. Source


Aravinthan A.,Chonbuk National University | Govarthanan M.,Chonbuk National University | Govarthanan M.,Mahendra arts and science college | Selvam K.,Center for Biotechnology | And 6 more authors.
International Journal of Nanomedicine | Year: 2015

A rapid, green phytosynthesis of silver nanoparticles (AgNPs) using the aqueous extract of Helianthus tuberosus (sunroot tuber) was reported in this study. The morphology of the AgNPs was determined by transmission electron microscopy (TEM). Scanning electron microscopy–energy-dispersive spectroscopy (SEM–EDS) and X-ray powder diffraction (XRD) analysis confrmed the presence of AgNPs. Fourier transform infrared spectroscopy (FTIR) analysis revealed that biomolecules in the tuber extract were involved in the reduction and capping of AgNPs. The energy-dispersive spectroscopy (EDS) analysis of the AgNPs, using an energy range of 2–4 keV, confrmed the presence of elemental silver without any contamination. Further, the synthesized AgNPs were evaluated against phytopathogens such as Ralstonia solanacearum and Xanthomonas axonopodis. The AgNPs (1–4 mM) extensively reduced the growth rate of the phytopathogens. In addition, the cytotoxic effect of the synthesized AgNPs was analyzed using rat splenocytes. The cell viability was decreased according to the increasing concentration of AgNPs and 67% of cell death was observed at 100 µg/mL. © 2015, Aravinthan et al. Source


Govarthanan M.,Mahendra arts and science college | Govarthanan M.,Chonbuk National University | Selvankumar T.,Mahendra arts and science college | Selvam K.,Center for Biotechnology | And 3 more authors.
Journal of Industrial and Engineering Chemistry | Year: 2015

A native feather-degrading keratinolytic bacterium, Bacillus sp. MG-MASC-BT was isolated from feather dumping soil in Mallasamudram, Tamil Nadu, India and screened for keratinase production using alkali treated horn waste (HW) and feather waste (FW). The study factors influencing keratinase production was optimized by Box-Behnken design (BBD). The maximum enzyme production (1075. U/ml) was observed at pH 7.0, temperature 55. °C and growth period of 60. h. The media supplemented with 6% of HW and FW enhanced keratinase production. Statistics based contour plots were generated to evaluate the changes in the response surface and to understand the relationship between the enzyme yield and the culture conditions. © 2014 The Korean Society of Industrial and Engineering Chemistry. Source

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