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Manonmani, V.
- Synthesis and Characterization of Silver Nanoparticles from Escherichia coli MTCC 118
Authors
1 Department of Electronics and Control Engg., Sathyabama University, Chennai, IN
2 Department of Instrumentation and Control Engg., SRM University, Chennai, IN
Source
Biometrics and Bioinformatics, Vol 4, No 1 (2012), Pagination: 9-12Abstract
This paper aims to report the synthesis and characterization of silver nanoparticles using the extract of Escherichia coli MTCC 118. The cell extract from this new strain is used for the first time for the synthesis of silver nanoparticles. This method of synthesis is a biological synthesis method by adding silver nitrate into the cell extract. This method is nontoxic, low cost and energy efficient compared to physical and chemical procedures [1]. Using the biological method, silver ions are bioreduced into silver nanoparticles from the cell extract of Escherichia coli MTCC 118. The formation of silver nanoparticles was then confirmed by indication of change in colour from colourless to reddish brown. This colour change was observed using UV-Vis Spectroscopy. UV-Visible spectrum of the aqueous medium containing silver ions was observed at the peak at 440-445nm corresponding to the surface plasmon absorbance of silver nanoparticles. The silver nanoparticles thus formed were further analyzed and characterized by FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-ray Diffraction Analysis) and AFM (Atomic force Microscopy). The average diameter of the silver nanoparticles was found to be in the range of 93-170nm using AFM. Samples given for further characterization of size and morphology of silver nanoparticles using TEM (Transmission Electron Microscopy) and SEM (Scanning Electron Microscopy). Further the synthesized silver nanoparticles were tested against common bacterial pathogens. These biosynthesized silver nanoparticles may be used to develop a biosensor model for the detection of bacteria [2].
Keywords
Silver Nanoparticles, UV-Vis Spectroscopy, FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-Ray Diffraction Analysis) and AFM (Atomic Force Microscopy), TEM (Transmission Electron Microscopy) and SEM (Scanning Electron Microscopy).
- Survey on Energy Saving Methods for Green Communication Network
Authors
1 Faculty of Electrical and Electronics Engineering, Sathyabama University, Chennai - 600 119, Tamilnadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 19 (2015), Pagination:Abstract
In recent years telecommunication is playing a vital role in communication field. The power usage has become a major problem since the usage of wireless communication has increased, which has leaded to environmental impact in a drastic manner. The main goal of designing green base stations is for saving energy and reducing power consumption while guaranteeing service and coverage for users and ensuring the capability of base station for evolution. To reduce the energy consumed by base station sleep mode mechanism is adapted. For uplink and downlink communication a joint bandwidth and power allocation method is deployed which promotes energy saving for both network operators and mobile users. Thus, Green networking is to reduce the unnecessary energy consumption keeping environmental factors into consideration. This paper deals with the survey of the problems upon implementation of base station in cellular networks for heterogeneous communication and also compares the various work related to green networking.Keywords
Base Station, Energy Efficiency, Green Networking, Heterogeneous Network, Sleep ModeFull Text
- App for Physiological Seed Quality Parameters
Authors
1 Agricultural Information Technology Graduates, Tamil Nadu Agricultural University, Coimbatore, IN
2 Tamil Nadu Agricultural University, Coimbatore, IN
3 Agricultural Research Station, Bhavanisagar, Tamil Nadu Agricultural University, Coimbatore, IN
Source
International Journal of Advanced Networking and Applications, Vol 10, No 1 (2018), Pagination: 3713-3716Abstract
Agriculture plays an important role in the economy of our country. Over 58 percent of the rural households depend on the agriculture sector as their means of livelihood. Agriculture is one of the major contributors to Gross Domestic Product(GDP). Seeds are the soul of agriculture. This application helps in reducing the time for the researchers as well as farmers to know the seedling parameters. The application helps the farmers to know about the percentage of seedlings that will grow and it is very essential in estimating the yield of that particular crop. Manual calculation may lead to some error, to minimize that error, the developed app is used. The scientist and farmers require the app to know about the physiological seed quality parameters and to take decisions regarding their farming activities. In this article a desktop app for seed germination percentage and vigour index calculation are developed in PHP scripting language.Keywords
Seed Germination Percentage, Seed Vigour Index, PHP, Desktop Application.Full Text
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