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Co-Authors
- Rajendra Bunkar
- Ram Asrey
- K. D. Vyas
- Sunil Kumar
- A. R. Srivastava
- M. P. Kaushik
- G. Surya Prakasa Rao
- H. C. Tewari
- K. K. Sharma
- K. Mallick
- O. P. Pandey
- N. Balakrishna
- V. Shatrugna
- B. V. S. Thimmayamma
- Yadagiri Kotha
- P. Kavitha
- K. S. Shivashankara
- T. K. Roy
- K. C. Pavithra
- A. T. Sadashiva
- K. V. Ravishankar
- G. J. Sathish
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Rao, V. K.
- Polyepichlorohydrin Modified Quartz Crystal Microbalance Sensor for Sulfur Mustard Vapor Detection
Abstract Views :506 |
PDF Views:134
Authors
Rajendra Bunkar
1,
Ram Asrey
1,
K. D. Vyas
1,
V. K. Rao
1,
Sunil Kumar
1,
A. R. Srivastava
1,
M. P. Kaushik
1
Affiliations
1 Defence Research & Development Establishment (DRDE), Jhansi Road, Gwalior, M.P., 474002, IN
1 Defence Research & Development Establishment (DRDE), Jhansi Road, Gwalior, M.P., 474002, IN
Source
Indian Journal of Science and Technology, Vol 3, No 2 (2010), Pagination: 139-142Abstract
The sulfur mustard (SM) vapor sensitive property of polyepichlorohydrin (PECH) polymer coating was investigated by using quartz crystal microbalance (QCM) sensor. The measurements were based on the frequency shifts (Hz) due to the sorption of SM vapor in the polymer coating of the modified QCM. The response of QCM sensor was found to be about 410 Hz for SM vapors. The influences of coating thickness and temperature on the sensor response were examined. The sensor showed optimum response and reversibility at 4 KHz of coating thickness and lower temperature. The relevant detection parameters like sensitivity, reversibility and reproducibility were evaluated for SM detection.Keywords
PECH, QCM, Sulfur Mustard, Response, ReversibilityReferences
- Singh Beer and Bhise PP (1999) Silica gel detector tubes for toxic chemicals. J. Sci. Ind. Res. 58, 25-30.
- Vidan A, Luria S and Eisenkraft A (2002) Ocular injuries Following Sulfur Mustard Exposure: Clinical Characteristics and Treatment. IMAJ. 4, 577-578.
- Gupta DC and Gutch PK (2004) Fluorinated epoxy resin based sorbent coating material for quartz piezoelectric crystal detctor. Def. Sci. J. 54 (2), 229-234.
- Adhikari B and Majumdar (2004) Polymers in sensor application. Prog. Polym. Sci. 29, 699-766.
- Gary O Nelson (1992) Gas mixture preparation and control. pp: 112-120
- Ying Z, Jiang Y, Du X, Xie G, Yu J and Wang G (2007) PVDF coated quartz crystal microbalance sensor for DMMP vapour detection. Sens. Actuat. B: Chem. 125, 167–172.
- Du X, Ying Z and Jiang Y (2008) PVDF coated quartz crystal microbalance sensor for DMMP vapor detection. Sens. Actuat. B. Chem. 134, 409-413.
- Grate JW and Klusty M (1993) A Smart Sensor System for Trace Organic Vapor Detection. 183rd Electrochemical Soc. Meeting, Honolulu, Hawaii.
- Grate JW and Nelson DA (2003), Sorptive polymeric materials and photopatterned films for gas phase chemical microsensors. Proc. IEEE. 91(6), 881-889
- Velocity Structure in Parts of the Gondwana Godavari Graben
Abstract Views :209 |
PDF Views:2
Authors
Affiliations
1 National Geophysical Research Institute, Hyderabad, 500 007, IN
1 National Geophysical Research Institute, Hyderabad, 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 56, No 4 (2000), Pagination: 373-384Abstract
Godavari graben, a palaeorift on the east coast of India, has been studied to delineate sedimentary thickness and basement configuration. First arrival seismic refraction data in the Chintalapudi sub-basin of Godavari graben have been utilized for 2-D ray trace modeling. Results indicate a thee layer velocity model, with velocities of 2.3-2.4, 3.2, and 4.0 kms-1 for the Gondwana (Permian to Cretaceous) sediments. Maximum depth to the basement, of velocity 55-57 kms-1, is to about 3 km in the deepest part of the sub-basin. The basement is possibly the Eastern Ghats suite of rocks. These results are in conformity with the thickness of stratigraphic sequences in a deep bore well in the basin, Another layer of velocity 5.8-6.3 kms-1 is present at about 4 km depth through out the study region, representing the base of Eastern Ghats Suite of rocks.Keywords
Godavari Graben, Gondwana, Chintalapudi Sub-Basin, Precambrian Basement, Seismic Refraction, Seismic Velocity.- Crustal Velocity Model in the Eastern Part of the Indian Peninsular Shield
Abstract Views :195 |
PDF Views:2
Authors
H. C. Tewari
1,
V. K. Rao
1
Affiliations
1 National Geophysical Research Institute, Hyderabad 500057, IN
1 National Geophysical Research Institute, Hyderabad 500057, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 36, No 5 (1990), Pagination: 475-483Abstract
The velocity analysis of the first arrival refraction data, along the two deep seismic sounding profiles in the eastern part of the Indian Peninsular shield has yielded a zone of high velocity at 3 to 15km depth within the limits of the Eastern Ghat Mobile Belt towards east of the Cuddapah basin. The analysis also indicates that the crustmantle boundary in the eastern part of the Indian shield is highly disturbed due to the intrusion from the upper mantle through the lower crust and, therefore, can be termed as transitional.Keywords
Geophysics, Seismology, Eastern Ghat Mobile Belt, Cuddapah Basin, Crustal Velocity Model.- Finite Element Gravity Regional and Residual Anomalies and Structural Fabrics of Northwest Ganga Basin
Abstract Views :188 |
PDF Views:2
Authors
Affiliations
1 Department of Applied Geology, University of Madras, Chennai, IN
2 National Geophysical Research Institute, Hyderabad, IN
1 Department of Applied Geology, University of Madras, Chennai, IN
2 National Geophysical Research Institute, Hyderabad, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 54, No 2 (1999), Pagination: 169-178Abstract
The separation of the regional gravity anomaly by any of the existing techniques has one common drawback, i.e. the Bouguer gravity values over the anomalous zone enter into the computations. In order to overcome this, a new scheme, based on the finite element approximation, is suggested to compute the regional anomaly. The uniqueness of this approach is that except a few discrete gravity values coinciding with the nodes of the element superimposing the map space, often very large, no other gravity data are invoked to compute the regional anomaly. As a case study, regional - residual anomaly separation has been carried out for the north west Ganga Basin. This area is chosen as it is tectonically very active, and based on the regional and residual gravity anomalies, we can unfold the imprints of various tectonic episodes along the lndo - Eurosian plate boundary. While the regional gravity anomaly shows possible association with deep-seated faults along the rivers Yarnuna and Chambal, the seismicity appears to be correlated with the residual gravity anomaly around Delhi.Keywords
Geophysics, Finite Element Analysis, Regional Gravity, Ganga Basin.- Missing Granitic Crust (?) in the Godavari Graben of Southeastern India
Abstract Views :190 |
PDF Views:161
Authors
O. P. Pandey
1,
V. K. Rao
1
Affiliations
1 National Geophysical Research lnstitute, Uppal Road, Hyderabad - 500 007, IN
1 National Geophysical Research lnstitute, Uppal Road, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 67, No 3 (2006), Pagination: 307-311Abstract
Detailed analysis of seismic signatures of the Godavari graben together with available geological and geophysical informations suggests that the granitic crust, especially in the axial part of the graben, may be altogether missing. There is a possibility that Gondwana sediments rest directly over the granulitic basement.Keywords
Seismic Signatures, Basement Relationships, Godavari Graben, Southeastern India.- Relative Merits of some Anthropometric Indices for Use among School Age Children and Adolescents
Abstract Views :164 |
PDF Views:2
Authors
Affiliations
1 National Institute of Nutrition, Indian Council of Medical Research, Jamai Osmania P.O., Hyderabad, IN
1 National Institute of Nutrition, Indian Council of Medical Research, Jamai Osmania P.O., Hyderabad, IN
Source
The Indian Journal of Nutrition and Dietetics, Vol 30, No 2 (1993), Pagination: 37-47Abstract
The index weight/height which has been known as the body mass index, was found useful for the assessment of the current or short duration forms of mainutrition among infants, preschool children and adults. It was also found closely correlated with growth rates of infants and preschool children.- Sedimentology and Sequence Stratigraphy of Hydrocarbon Bearing Mandapeta Pays: A Braided Fluvial Reservoir, Krishna-Godavari Basin
Abstract Views :181 |
PDF Views:130
Authors
V. K. Rao
1,
Yadagiri Kotha
2
Affiliations
1 Directorate General of Hydrocarbons, Ministry of Petroleum, New Delhi, IN
2 ONGC, Jorhat, Assam, IN
1 Directorate General of Hydrocarbons, Ministry of Petroleum, New Delhi, IN
2 ONGC, Jorhat, Assam, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 60, No 6 (2002), Pagination: 714-715Abstract
No Abstract.- Metabolite Profiling for Six 'B' Vitamins Using LC-MS in Tomato Genotypes at Different Stages of Fruit Maturity
Abstract Views :202 |
PDF Views:131
Authors
P. Kavitha
1,
K. S. Shivashankara
1,
T. K. Roy
1,
K. C. Pavithra
1,
V. K. Rao
1,
A. T. Sadashiva
2,
K. V. Ravishankar
3,
G. J. Sathish
4
Affiliations
1 Division of Plant Physiology and Biochemistry, ICAR-Indian Institute of Horticultural Research, Hesaraghatta lake post, Bengaluru –560 089, IN
2 Division of Vegetable Crops, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru-560 089, IN
3 Division of Biotechnology, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru-560 089, IN
4 Department of Biochemistry, Kuvempu University, Shankaraghatta-577 451, Karnataka, IN
1 Division of Plant Physiology and Biochemistry, ICAR-Indian Institute of Horticultural Research, Hesaraghatta lake post, Bengaluru –560 089, IN
2 Division of Vegetable Crops, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru-560 089, IN
3 Division of Biotechnology, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru-560 089, IN
4 Department of Biochemistry, Kuvempu University, Shankaraghatta-577 451, Karnataka, IN
Source
Journal of Horticultural Sciences, Vol 10, No 1 (2015), Pagination: 30-37Abstract
Vitamins are essential nutrients in food crucial for maintaining good health. Tomato, being a widely consumed vegetable, provides a good quantity of vitamins. Metabolite profiling of vitamins at different stages of fruit maturity in a crop helps identify the right stage for better quality. Based on preliminary screening for quality parameters, tomato lines rich in TSS, antioxidants, lycopene and beta-carotene were selected for the present study. Eight genotypes and a wild species were profiled for 'B' vitamins at three different stages of fruit maturity, viz., green, breaker and ripe stage. A simple and sensitive liquid chromatography-tandem mass spectrometric (LC-MS/MS) method for simultaneous determination of six 'B' vitamins was developed and validated by us. Among the genotypes studied, IIHR-249-1 recorded higher niacin, pantothenic acid and biotin content. Pyridoxine content was higher in the hybrid, Arka Rakshak. The wild species, LA-1777(Solanum habrochaites) was found to be rich in pantothenic acid, riboflavin and thiamine. Content of most of the vitamins increased with ripening of the fruit. IIHR-249-1 and LA-1777 were found to be rich in 'B' vitamins, earlier reported to be also rich in antioxidants and lycopene. These genotypes can be used for improving the nutritive value of tomato under crop improvement programmes, through conventional breeding or biotechnological approaches.Keywords
Tomato, B Vitamins, LC-MS/MS-MRM, Fruit Ripening, Green Stage, Breaker Stage.References
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- Bae, H., Jayaprakasha, J.K., Crosby, K., Yoo, K.S., Leskovar, D.I., Jifon, J. and Patil, B.S. 2014. Ascorbic acid, capsaicinoid, and flavonoid ‘a’ glycone concentrations as function of fruit maturity stage in greenhouse-grown peppers. J. Food Comp. Anal., 33:195-202
- Bartolomeo, M.P. and Maisano, F. 2006. Validation of a Reversed- Phase HPLC Method for quantitative amino acid analysis. J. Biomol. Tech., 17:131-138
- Beutner, S., Bloedorn, B., Frixel, S., Blanco, I.H., Hoffmann, T. and Martin, H. 2007. Quantitative assessment of antioxidant properties of natural colorants and phytochemicals: carotenoids, flavonoids, phenols, and indigoids: The role of â-carotene in antioxidant functions. J. Sci. Food Agri., 81:559-568
- Canene-Adams, K., Campbell, J.K., Zaripheh, S., Jeffery, E.H. and Erdman, J.W. 2005. The tomato as a functional food. J. Nutr., 135:1226-1230
- Capo-chichi, C.D., Gueant, J.L., Feillet, F., Namour, F. and Vidailhet, M. 2000. Analysis of riboflavin and riboflavin cofactor levels in plasma by highperformance liquid chromatography. J. Chromatogr. B., 739:219-224
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- Chen, Z., Chen, B. and Yao, S. 2006. High-performance liquid chromatography/electrospray ionization-mass spectrometry for simultaneous determination of taurine and10 water-soluble vitamins in multivitamin tablets. Anal. Chim. Acta., 569:169-175
- Forde, B.G. and Lea, P.J. 2007. Gluatmate in plants: Metabolism, regulation and signalling. J. Exptl. Bot., 58:2339-2358
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