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Revathi, M.
- Silver Nanoparticles from Switenia mahagony: green Synthesis and Characterisation
Abstract Views :622 |
PDF Views:524
Authors
Affiliations
1 Department of Biomedical Sciences, Asmara College of Health Sciences, Asmara, Eritrea, North East Africa. P.O.Box 1866
2 Department of Biochemistry, JBAS College for Women, Chennai, IN
3 Department of PG Biochemistry, Bharathi Women’s College North Madras, Chennai., IN
4 Department of Basic and behavioural Sciences, Asmara College of Health Sciences, Asmara, Eritrea, North East Africa. P.O.Box 1866.
1 Department of Biomedical Sciences, Asmara College of Health Sciences, Asmara, Eritrea, North East Africa. P.O.Box 1866
2 Department of Biochemistry, JBAS College for Women, Chennai, IN
3 Department of PG Biochemistry, Bharathi Women’s College North Madras, Chennai., IN
4 Department of Basic and behavioural Sciences, Asmara College of Health Sciences, Asmara, Eritrea, North East Africa. P.O.Box 1866.
Source
Indian Journal of NanoScience, Vol 1, No 1 (2013), Pagination: 1-5Abstract
The synthesis of metal and semiconductor nanoparticles is an expanding research area due to the potential applications for the development of novel technologies. In this work, we describe a cost effective and environment friendly technique for green synthesis of silver phyto nanoparticles and their antibiogram from 3mM silver nitrate solution through the extract of Switenia mahagony as reducing as well as capping agent. In the process of synthesising silver nanoparticles, we observed a rapid reduction of silver ions leading to the formation of stable crystalline silver nanoparticles in the solution. The herbal leaves and their medicinal properties were already discussed in varieties of ayurvedic studies. The synthesis of silver phyto nanoparticles were prepared by adding silver nitrate solution solution (3mM) to the plant extract. Nanoparticles were characterised using UV-Visible absorption spectroscopy, FTIR, XRD, XRF, TEM AND SEM analysis. The biomass of plants produces their nanomaterials by a process called bio mineralisation. It was concluded from the above studies that 3 mM concentration of silver nanoparticles showed the best concentration amongst the various concentrations prepared and also their characterisation showed that these nanoparticles synthesised were mostly globular in structure, and proved to have the functional groups in the terminal ends as well as showed sharp peaks by XRD studies.Keywords
Herbal Extract, Silver Nanoparticles, UV- VIS, FTIR, TEM, SEM, XRDFull Text
References
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- Comparative Study of Pure Zno and Copper Doped Zno Nanoparticles Synthesised via Co-Precipitation Method
Abstract Views :587 |
PDF Views:725
Authors
Affiliations
1 Department of Physics, Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
2 Department of Physics, Vivekananda College of Arts & Science for Women, Tiruchengode, Namakal, IN
3 Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
1 Department of Physics, Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
2 Department of Physics, Vivekananda College of Arts & Science for Women, Tiruchengode, Namakal, IN
3 Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
Source
ScieXplore: International Journal of Research in Science, Vol 1, No 2 (2014), Pagination: 73-77Abstract
The ZnO nanoparticles has unique properties like wide band gap energy, large excitation energy, acts as a functional material near UV emission, optical transparency [1]. It has versatile applications in optoelectronic devices, which creates the immense interest in its synthesis. Pure ZnO&Copper doped ZnO nanoparticles were prepared by Controlled Precipitation method. The structural characterization of the samples was investigated by X-ray diffraction and Scanning electron microscopy. The crystalline size of Pure ZnO nanoparticle is 22nm&Copper doped Nanoparticle is 11 nm is revealed by XRD. SEM micrographs reveals that both images are cluster shaped. The FT-IR showed that various functional groups have been formed. UV visible spectroscopy determines the band gap energy of ZnO nanoparticles.Keywords
Copper Doped ZnO, FTIR, Pure ZnO, SEM, UV, XRD.Full Text
References
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- Automated Finger Vein Identification and Imaging System for Mobile Using Biometrics Signature
Abstract Views :148 |
PDF Views:4
Authors
R. Karthiga
1,
M. Revathi
1
Affiliations
1 Paavaai Group of Institutions, IN
1 Paavaai Group of Institutions, IN
Source
Biometrics and Bioinformatics, Vol 7, No 1 (2015), Pagination: 12-16Abstract
Biometrics is used in computer science as a form of identification and access control. Biometric identifiers are often categorized as physiological versus behavioral characteristics. A physiological biometric would identify by one's voice, DNA, hand print or behavior. Behavioral biometrics is related to the behavior of a person typing rhythm, gait, and voice. Finger vein is a promising biometric pattern for personal identification and authentication in terms of its security and convenience. An analysis of different techniques for finger-vein feature extraction. Device for capturing finger-vein images, by ROI segmentation, and a novel method combining blanket dimension features and lacunarity features for recognition. Finger vein is a promising biometric pattern for personal identification and authentication in terms of its security and convenience. An analysis of different techniques for finger-vein feature extraction. Device for capturing finger-vein images, by ROI segmentation, and a novel method combining blanket dimension features and lacunarity features for recognition. The finger does not have to touch the sensor maintains the hygienic concerns and sensor life. There are two types of stages are enrolment stage and the verification stage. Both stages start with finger-vein image pre-processing, which includes detection of the region of interest (ROI), image segmentation, alignment, and enhancement.
Keywords
Finger-Vein Recognition, Biometrics, Mobile Devices.
- Enhanced Performance for Dynamic Wireless Environment via Integrated Push System and Femtocell
Abstract Views :128 |
PDF Views:4
Authors
Source
International Journal of Innovative Research and Development, Vol 3, No 3 (2014), Pagination:Abstract
This paper provides a, new design topology for wireless data broadcasting. At the Broadcast server, the use of smart antennas with alterable beamwidth to client location based wireless push system. Where data from the broadcast sever (BS) is transmitted to the user location area with respect to geographical distribution of clients with the help of learning automata, where modification is done at the receiver side by integrating with the Femtocell. The proposed scheme increases the speed of data broadcasting in dynamic environment observed at the client side.
Keywords
Data broadcasting, push system, smart antenna femtocell, interference, Learning automataFull Text
- Preparation and Comparison of Low Cost Media for Fungus Growth
Abstract Views :435 |
PDF Views:304
Authors
Affiliations
1 Department of Microbiology, Palanisamy College of Arts, Perundurai, Erode – 638052, Tamil Nadu, IN
2 Department of Biochemistry, Sree Sankara College, Kelady, Ernakulam – 683574, Kerala, IN
1 Department of Microbiology, Palanisamy College of Arts, Perundurai, Erode – 638052, Tamil Nadu, IN
2 Department of Biochemistry, Sree Sankara College, Kelady, Ernakulam – 683574, Kerala, IN
Source
FoodSci: Indian Journal of Research in Food Science and Nutrition, Vol 6, No 1 (2019), Pagination: 8-12Abstract
The cost of preparation of selective media for the fungus is costly. The preparation of media with low cost supplements can be efficiently used for the growth of fungus thereby reducing the cost of media preparation. So, we have selected four different low cost, locally and naturally available materials like Tender Coconut Water (TCW), milk, whey and toddy were selected for the media preparation. Three different fungi i.e, Aspergillus niger, Fusarium species and Mucor species were tested.Keywords
Fungus, Milk, Tender Coconut Water (TCW), Toddy, Whey.Full Text
References
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