Informatics Publishing Limited

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

Abstract

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, Reversibility

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G. Surya Prakasa Rao ¹, H. C. Tewari ¹, V. K. Rao ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad, 500 007, IN

Abstract

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.

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H. C. Tewari ¹, V. K. Rao ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad 500057, IN

Abstract

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.

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K. K. Sharma ¹, V. K. Rao ², K. Mallick ²

Affiliations
1 Department of Applied Geology, University of Madras, Chennai, IN
2 National Geophysical Research Institute, Hyderabad, IN

Abstract

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.

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O. P. Pandey ¹, V. K. Rao ¹

Affiliations
1 National Geophysical Research lnstitute, Uppal Road, Hyderabad - 500 007, IN

Abstract

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.

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V. K. Rao ¹, N. Balakrishna ¹, V. Shatrugna ¹, B. V. S. Thimmayamma ¹

Affiliations
1 National Institute of Nutrition, Indian Council of Medical Research, Jamai Osmania P.O., Hyderabad, IN

Abstract

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.

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V. K. Rao ¹, Yadagiri Kotha ²

Affiliations
1 Directorate General of Hydrocarbons, Ministry of Petroleum, New Delhi, IN
2 ONGC, Jorhat, Assam, IN

Abstract

No Abstract.

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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

Abstract

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.

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