National Geophysical Research Institute Council for Scientific and Industrial Research

Uppal Kalan, India

National Geophysical Research Institute Council for Scientific and Industrial Research

Uppal Kalan, India
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Sathyavathi R.,University of Hyderabad | Dingari N.C.,Massachusetts Institute of Technology | Barman I.,Massachusetts Institute of Technology | Prasad P.S.R.,National Geophysical Research Institute Council for Scientific and Industrial Research | And 5 more authors.
Journal of Biophotonics | Year: 2013

In this letter, we propose a novel method for diagnosis of tuberculous meningitis using Raman spectroscopy. The silicate Raman signature obtained from Mycobacterium tuberculosis positive cases enables specific and sensitive detection of tuberculous meningitis from acquired cerebrospinal fluid samples. The association of silicates with the tuberculosis mycobacterium is discussed. We envision that this new method will facilitate rapid diagnosis of tuberculous meningitis without application of exogenous reagents or dyes and can be aptly used as a complementary screening tool to the existing gold standard methods. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Anu Radha B.,National Geophysical Research Institute Council for Scientific and Industrial Research | Rasheed M.A.,National Geophysical Research Institute Council for Scientific and Industrial Research | Srinivasa Rao P.L.,National Geophysical Research Institute Council for Scientific and Industrial Research | Dayal A.M.,National Geophysical Research Institute Council for Scientific and Industrial Research
Journal of Environmental Protection and Ecology | Year: 2013

The study was carried out to assess the fluoride concentration in groundwater in some villages of eastern part of the Adilabad district, India, where groundwater is the main source of drinking water. Water samples collected from shallow aquifer-based hand-pumps were analysed for fluoride (F-) content along with pH, electrical conductivity, total dissolved solids (TDS), chloride (Cl-), nitrate (NO3 -) and phosphate (PO4 3-). The concentration of F- in the drinking water samples ranged from 9.35 to 35.6 mg/l with the arithmetic mean of 14.08 mg/l. 100% of the water samples exceed the permissible limits for fluoride in drinking water by World Health Organisation (WHO) and Indian Standards Institute (ISI) guidelines for drinking water quality. High fluoride concentration was observed in Manchiryal, Bhimavaram, Kazipalli, Kannepalli, Audum, Nennele, Rebbena, Nagaram and Chennur areas of the Adilabad district, Andhra Pradesh. The groundwaters at 26 sampling stations are especially prone to contamination from geological formations. Overall water quality was found unsatisfactory for drinking purposes.


Chari V.D.,National Geophysical Research Institute Council for Scientific and Industrial Research | Chari V.D.,Osmania University | Sharma D.V.S.G.K.,National Geophysical Research Institute Council for Scientific and Industrial Research | Prasad P.S.R.,National Geophysical Research Institute Council for Scientific and Industrial Research | Murthy S.R.,Osmania University
Journal of Natural Gas Science and Engineering | Year: 2013

Methane gas hydrate (MH) formation/dissociation were investigated in nano silica and water system in a non-stirred reactor. The MH yield was significantly improved in the presence of nano silica. The overall methane hydrate conversion (≥80%) was achieved by optimizing the nano silica to water ratio. Two-stage dissociation was observed after a rapid de-pressurization. Methane gas intake of this system was steady for multiple freezing-thawing cycles signifying improved stability for methane gas storage. © 2012 Elsevier B.V.

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