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Sarkar, Sonia
- Calophyllum apetalum Interceded Blend of Silver Nanoparticles and their Antimicrobial Impact
Abstract Views :254 |
PDF Views:108
Authors
C. P. Chandrappa
1,
M. Govindappa
1,
N. Chandrasekar
2,
Sonia Sarkar
1,
Sepuri Ooha
1,
R. Channabasava
1,
G. S. Vijay Kumar
3,
C. P. Ramesh
4
Affiliations
1 Dept of Biotechnology, Shridevi Institute of Engg and Technology, Sira Road, Tumkur- 572106, Karnataka, IN
2 Department of Chemistry, Shridevi Institute of Engineering and Technology, Sira Road, Tumkur-572106, Karnataka, IN
3 Department of Microbiology, Shridevi Institute of Medical Sciences and Research Hospital, Tumkur-572 106, Karnataka, IN
4 Department of Zoology, N.S.R.P. Govt. Degree College for Women, Hindupur, Andhrapradesh, IN
1 Dept of Biotechnology, Shridevi Institute of Engg and Technology, Sira Road, Tumkur- 572106, Karnataka, IN
2 Department of Chemistry, Shridevi Institute of Engineering and Technology, Sira Road, Tumkur-572106, Karnataka, IN
3 Department of Microbiology, Shridevi Institute of Medical Sciences and Research Hospital, Tumkur-572 106, Karnataka, IN
4 Department of Zoology, N.S.R.P. Govt. Degree College for Women, Hindupur, Andhrapradesh, IN
Source
Indian Journal of NanoScience, Vol 4, No 2 (2016), Pagination: 1-7Abstract
Background/Objective: synthesis of silver nanoparticles by the extract of Calophyllum apetalum and their characterization to find out size and morphology of the particles.
Methodology: The characterization was done by X-Ray diffractive (XRD), UV- Visible spectroscopy and scanning electron microscopy (SEM). X-Ray diffraction (XRD) was used to find out the particle size and SEM image was used to determine its morphology.
Findings: 94nm silver nanoparticles were synthesized.
Improvements/Application: As antibacterial agents.
Keywords
Calophyllum apetalum, UV-VIS, SEM, XRD, Silver Nanoparticles, Antibacterial.Full Text
References
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- Mineral Chemistry Perspective of Nain Ophiolite Mélange, Central Iran
Abstract Views :138 |
PDF Views:17
Authors
Alireza Eslami
1,
Jyotisankar Ray
2,
Madhuparna Paul
2,
Sonia Sarkar
2,
Mousumi Banerjee
2,
Moussa Noghreyan
3,
Payel Dey
2
Affiliations
1 Department of Economic Geology, Tarbiat Modares University, Tehran 14115-175, IR
2 Department of Geology, University of Calcutta, Kolkata 700 019, IN
3 Department of Geology, University of Isfahan, Isfahan 81744, IR
1 Department of Economic Geology, Tarbiat Modares University, Tehran 14115-175, IR
2 Department of Geology, University of Calcutta, Kolkata 700 019, IN
3 Department of Geology, University of Isfahan, Isfahan 81744, IR
Source
Current Science, Vol 116, No 10 (2019), Pagination: 1742-1747Abstract
The present study documents detailed mineral chemi-stry perspective of Nain ophiolite mélange (NOM) of Central Iran with an aim of deciphering the mineral systematics and understanding geothermobarometric equilibration. The NOM covers ~600 km2 and is located at the northwest margin of Central Iranian Microcontinental block. NOM is represented by a sheared, tectonized and serpentinized peridotite in-truded by coarse-grained pegmatitic gabbroic dykes, layered gabbro, sheeted dolerite dykes (with typical rodingite alteration) and pillow basalts. Plagioclase in pillow basalt is albitic and indicates its spilitic affinity, while pyroxene is typically quad pyroxene (augite to diopside). Amphiboles belong to calcic group and range from actinolite to magnesio hornblende. Ilme-nite is the characteristic opaque phase. Clinopyroxene thermometry records a temperature span of 1100–1300C, while amphibole thermometry records 979–1145C. Two-feldspar thermometry also records a similar thermometric range. Amphibole barometry shows higher pressure of equilibration for mantle pegmatite in general and a very low equilibration pressure for sheeted dyke. Pyroxene compositions typically indicate a calc-alkaline basaltic (orogenic) parentage. NOM signifies lherzolite ophiolite type in a chromite-free environment and it is analogous to an idealized ophiolite succession, but has been emplaced in the form of discrete tectonic mélange.Keywords
Amphibole Barometry, Mineral Chemistry, Ophiolite Mélange, Orogenic Setting, Quad Pyroxene.Full Text
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