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Chakraborty, M.
- Cardioprotective Activity of Methanolic Extract of Aegle Marmelos Leaf Extract against Isoproterenol Induced Myocardial Damage in Rats
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PDF Views:85
Authors
Affiliations
1 Department of Pharmacology, Krupanidhi College of Pharmacy, Chikkabellandur, Carmalaram Post, Bangalore-560 035, IN
2 Department of Pharmaceutical Chemistry, Krupanidhi College of Pharmacy, Chikkabellandur, Carmalaram Post, Bangalore-560 035, IN
1 Department of Pharmacology, Krupanidhi College of Pharmacy, Chikkabellandur, Carmalaram Post, Bangalore-560 035, IN
2 Department of Pharmaceutical Chemistry, Krupanidhi College of Pharmacy, Chikkabellandur, Carmalaram Post, Bangalore-560 035, IN
Source
Journal of Pharmaceutical Research, Vol 9, No 1 (2010), Pagination: 35-38Abstract
The present study was undertaken to evaluate the cardioprotective effect of methanolic extract of Aegle marmoles leaves (AMLE) against isoproterenol (ISO) induced myocardial damage in rats. Rats of either sex were administered AMLE (100 and 500 mg/kg) for three weeks and propranolol (PRO, 10 mg/kg) for one week in their respective groups orally. Subsequently myocardium injury was induced by subcutaneous administration of isoproterenol (150 mg/kg) for two consecutive days. The influence of prophylactic treatment was analysed by quantification of biomarkers and antioxidants. The CK-MB activities were fallen in serum and raised in heart tissue of animals treated with low and high doses of AMLE as well as PRO compared to ISO control. However, low dose of AMLE did not demonstrate any significant change in serum and tissue LDH activity when compared to ISO control. Further, high and low doses of AMLE caused significant elevation in SOD and CAT activities compared to ISO control. Furthermore, TBARS level declined in heart tissues of animals treated with PRO and high doses of AMLE, whereas, low dose of AMLE was not equally potent. Hence it is concluded that the low dose of AMLE was less effective than the high dose of AMLE and PRO.Keywords
Aegle marmoles, Antioxidants, Cardioprotection, Isoproterenol.Full Text
- Detection of Glacier Lakes Buried under Snow by RISAT-1 SAR in the Himalayan Terrain
Abstract Views :264 |
PDF Views:99
Authors
Affiliations
1 Geo Science and Applications Group, Space Applications Centre (ISRO), Ahmedabad 380 015, IN
1 Geo Science and Applications Group, Space Applications Centre (ISRO), Ahmedabad 380 015, IN
Source
Current Science, Vol 109, No 9 (2015), Pagination: 1735-1739Abstract
Synthetic aperture radar (SAR) signals penetrate through the dry snow and cloud providing crucial data over the Himalayan temperate glaciers and complement the optical images. In the present study, RISAT-1 C band and AWiFS images of winter/ablation period over Samudra Tapu and Gepang Gath moraine dammed lakes (MDLs) in Himachal Pradesh have been analysed. Backscattering coefficient of the lake was observed to be low throughout the year. Penetration depth of SAR into dry snowpack was calculated to vary from 4 to 22 m for a range of snow density (0.1-0.5 g/cm3), whereas it was estimated to be 1.20- 2.01 m based on ground observations for 30 January and 24 February 2013. The present study provides results of RISAT-1 C-band penetration up to ~2 m through the snowpack to detect MDLs in the Himalayan terrain. The detection of MDLs using the backscattering images of winter season was validated with synchronous AWiFS sensor images.Keywords
Backscattering Coefficient, Glacier Lakes, Snow and Cloud, Synthetic Aperature Radar.Full Text
References
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- Hall, D. K., Remote sensing of snow and ice using imaging radar. In Principles and Applications of Imaging Radars (eds Henderson, F. M. and Lewis, L. A.; editor-in-chief Ryerson, R. A.), John Wiley, 1998, vol. 2, 3rd edn, pp. 677–703.
- Venkataraman, G. and Singh, G., Radar application in snow, ice and glaciers. In Encyclopedia of Snow, Ice and Glaciers (eds Singh, V. P., Singh, P. and Haritashya, U. K.), 2011, pp. 883–903; doi: 10.1007/978-90-481-2642-2
- Singh, S. K., Rathore, B. P. and Bahuguna, I. M., Understanding the effect of various glacier features on backscattering coefficients of the SAR data in the Himalayan region. SAC/EPSA/MPSG/ GSD/RISAT/SR/83/2013, 2013, p. 24.
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- Strozzi, T., Wiesmann, A., Kääb, A., Joshi, S. and Mool, P., Glacial lake mapping with very high resolution satellite SAR data. Nat. Hazards Earth Syst. Sci., 2012, 12, 2487–2498.
- Kiran Kumar, A. S., Significance of RISAT-1 in ISRO’s Earth observation programme. Curr. Sci., 2013, 104(4), 444–445.
- Misra, T. et al., Synthetic aperture radar payload on-board RISAT-1: configuration, technology and performance. Curr. Sci., 2013, 104(4), 446–461.
- Kulkarni, A. V., Dhar, S., Rathore, B. P., Babu, G. R. K. and Kalia, R., Recession of Samudra Tapu glacier, Chandra basin, Himachal Pradesh. Photonirvachak, 2006, 34(1), 39–46.
- Hallikainen, M. and Winebrenner, D. P., The physical basis for sea ice remote sensing. In Microwave Remote Sensing of Sea Ice (eds Carsey, F. D.), American Geophysical Unit, 1992, pp 29-46, ISBN: 0-87590-033-X.
- Bipartite Entanglement for Two Electronic Qubits in Double Photoionization of Xeon
Abstract Views :183 |
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Authors
Affiliations
1 Department of Physics, Asansol Girls’ College, Asansol – 713304, West Bengal, IN
1 Department of Physics, Asansol Girls’ College, Asansol – 713304, West Bengal, IN
Source
Indian Journal of Science and Technology, Vol 10, No 27 (2017), Pagination:Abstract
Objectives: To study of entanglement between two electronic qubits,without observing spin orbit interaction (SOI), produced by double photo ionization from Xeon atom following the absorption of a photon. Methods: In absence of SOI, Russel-Salunders coupling (L-S coupling) is applicable. As the estimations of entanglement we have considered Peres- Horodecki condition and negativity. In case of L-Scoupling, all the properties of electronic qubits are predicted merely with the knowledge of the spins of the target atom, the residual photoion, emitted electrons and the state of polarization of the absorbed photon. Findings: We have found that the electronic qubits may be totally entangled, partially entangled or separable depending on spin states of target Xe, residualdication Xe2+,emitted electrons and the state of polarization of incident photon as well as of the direction sspin quantization and ejection of the photoelectrons. Applications/ Improvements: Studies of quantumen tanglement and its paradoxical properties hold the key to various Quantum information (QI) tasks such as quantum teleportation, quantum cryptography and quantum computer technology.Keywords
Density Operator PACS No. 32.30, L-S Coupling, Negativity, Peres-Horodecki Condition.Full Text
- Braced Barrel Vault-Its Analysis, Economy & Practical Considerations
Abstract Views :167 |
PDF Views:0
Authors
Affiliations
1 Civil Engineering Department, Jadavpur University, IN
1 Civil Engineering Department, Jadavpur University, IN
