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Balachandar, R.
- Proximity-Based Authentication – The Future of Security for Mobile Devices
Abstract Views :142 |
PDF Views:4
Authors
Affiliations
1 Department of MCA, IN
1 Department of MCA, IN
Source
Biometrics and Bioinformatics, Vol 4, No 6 (2012), Pagination: 262-266Abstract
Securing interactions between devices that do not know each other is an important and challenging task. We present how to authenticate co-located devices using knowledge of their shared radio environment as proof of physical proximity. We present evaluation results that show that our technique is robust against a range of passive and active attacks. The key advantages of our technique are that it does not require any additional hardware to be present on the devices beyond the radios that are already used for communication; it does not require user involvement to verify the validity of the authentication process, and it is not vulnerable to eavesdropping.Keywords
Eavesdropping, Proximity, Radio Environment.
- Optimization of Process Parameters for Total Phenol Extraction from Wood Waste using Response Surface Methodology
Abstract Views :152 |
PDF Views:0
Authors
R. Subbaiya
1,
V. Vijay Raja
2,
R. Balachandar
3,
D. Suresh
4,
S. Chozhavendhan
1,
S. Vinoth
1,
G. Karthiga Devi
1
Affiliations
1 Department of Biotechnology, Vivekanandha College of Engineering for Women, Elayampalayam, Tiruchengode, Namakkal, IN
2 Department of Biotechnology, K. S. Rangasamy College of Technology, Tiruchengode, Namakkal – 637215 Tamil Nadu, IN
3 Department of Biotechnology, Arulmigu Meenakshi Amman College of Engineering, Kanchipuram- 604410, Tamil Nadu, IN
4 Department of Microbiology, School of Life Sciences, Vels Institute of Science, Technology & Advanced Studies (VISTAS), Pallavaram, Chennai, Tamil Nadu, IN
1 Department of Biotechnology, Vivekanandha College of Engineering for Women, Elayampalayam, Tiruchengode, Namakkal, IN
2 Department of Biotechnology, K. S. Rangasamy College of Technology, Tiruchengode, Namakkal – 637215 Tamil Nadu, IN
3 Department of Biotechnology, Arulmigu Meenakshi Amman College of Engineering, Kanchipuram- 604410, Tamil Nadu, IN
4 Department of Microbiology, School of Life Sciences, Vels Institute of Science, Technology & Advanced Studies (VISTAS), Pallavaram, Chennai, Tamil Nadu, IN
Source
Research Journal of Pharmacy and Technology, Vol 12, No 3 (2019), Pagination: 1096-1104Abstract
The aim of present study is to optimize the important parameters of total phenol extraction form Azadirachta indica wood using ethanol. Experiments were conducted based on the central composite rotatable design (CCRD) and the models were constructed using response surface methodology (RSM). Response Surface Methodology (RSM) was employed for optimization of influencing factors such quantity of wood, temperature and extraction time in total phenol extraction using ethanol as solvent. The levels of mentioned parameters were in the range 1-5% of quantity of wood, 20-60°C of temperature and 1-5 days of extraction time were evaluated. The optimization of individual parameters were determined the 5% for quantity of wood, 50°C for temperature and 4 days for incubation time as central values. Based on the central values, 17 experiments were designed and experimentally conducted. The responses of 17 experiments were used for optimization. The best optimal condition of total phenol extraction was determined as quantity of wood 4.55 %, temperature 59.24°C and extraction time 3.92 days with extraction yield 0.958 mg Gallic acid equivalents (GAE)/g of dry powder. The phenolic extract quality was evaluated using thin layer chromatography and GC-MS analysis. The extract shows good anti-bacterial activity against E. coli and S. aureus.Keywords
Total Phenol, CCRD, RSM, Thin Layer Chromatography, Anti-Bacterial.References
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