Informatics Publishing Limited

S. D. Singh ¹, S. Mehta ¹, B. C. Chhaparwal ¹, M. A. Khan ¹

Affiliations
1 M. G. M. Medical College & M. Y. Hospital, Indore., IN

Abstract

No Abstract.

Keywords

No Keywords

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S. D. Singh ¹

Affiliations
1 Palaeontology Laboratory, KDM Institute of Petroleum Exploration, Oil and Natural Gas Corporation Limited, Kaulagarh Road, Dehra Dun - 248 195, IN

Abstract

Petrographic attributes of intertrappean beds exposed at four localities in Mumbai, one each at Malabar and Worli Hills and two at the Amboli quarry, Jogeshwari are studied in detail. Microfacies of vitric tuff, lithic tuff and black carbonaceous shale have been identified, which differ from their counterparts in other intertrappean localities of peninsular India in having a significant amount of pyroclastics. Bulk XRD anatyses of intertrappean beds of Malabar Hill show similar mineral assemblage in tuffs as well as black carbonaceous shales pointing towards the same provenance for these beds. Further, the XRD analysis of the clay fraction of these samples reaffirms their pyroclastic nature, the pyroclasts being reworked in most cases.

Keywords

Mineralogy, Clay Minerals, Tuffs, Carbonaceous Shale, Intertrappean Beds, Deccan Trap, Mumbai, Maharashtra.

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S. D. Singh ¹, D. N. S. Raju ²

Affiliations
1 Paleontology Laboratory, Geology Division, K.D.M. Institute of Petroleum Exploration, Oil and Natural Gas Corporation Ltd., Kaulagarh Road, Dehradun-248195, IN
2 10, Siddhartha Enclave, General Mahadev Singh Road, Dehradun - 248 001, IN

Abstract

Biometric study is carried out on a rich assemblage of the genus Heterostegina from the basal part of the holostratotype of the Waiorian stage, Kachchh. The assemblage is from a level between the last occurrence level of Nummulites fichteli Michelotti and the first appearance of miogypsinids and Globigerinoides primordills Blow and Banner and can be dated as Chattian. The assemblage consists of a single homogenous population of Heterostegina (Vlerkina) borneensis Van der Vlerk. Published data together with our present results suggest that (1) there is an overall drop in the mean value of the size of the protoconch from Heterostegina (Vlerkinu) in the Chattian to Hererostegina (Heterostegina) in the Middle Miocene and, thereafter, a slight increase in protoconch size in the Recent; (2) the mean number of operculine chambers increases from the Chattian to the Burdigalian and (3) the mean height of the first whorl drops gradually from the Chattian to the Recent.

Keywords

Heterostegina Foraminifera, Biometry, Evolution, Chattian, Kachchh, Gujarat.

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Anil Bhandari ¹, S. D. Singh ¹

Affiliations
1 Paleontology Laboratory, Geology Division, K.D.M.I.P.E., Oil and Natural Gas Corporation Limited, Dehra Dun - 248 195, Uttranchal, IN

Abstract

A total of 24 ostracode species belonging to 14 genera are recorded from the Krishna River estuary and Gautami-Godavari estuary. The study reveals that the upper estuary is dominated by thin shelled Hemicytheridea andhraensis (Annapurna and Rama Sarma) and few fresh water ostracodes having low frequency (05) and diversity (2-3). The lower estuary ostracodes have some influence of marine ostracodes and comparatively high frequency (50-60) and diversity (08). Ostracodes recorded from the lower estuary are represented by Kallingella mckenziei Jain, Neosinocythere dekrooni (Kingma), Tanella gracilis Kingma, Neomonoceratina iniqua (Brady), Phlycetenophora orientalis (Brady) along with Hemicytheridea andhraensis (Annapurna and Rama Sarma). This study will be helpful in understanding and recognizing palea subenvironment and thus helpful in developing precise pafeodepositonal model which will give further lead to hydrocarbon exploration.

Keywords

Recent Ostracoda, Deltaic Subenvironment, Inner Shelf, East Coast, India.

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Manju Zacharias ¹, S. Naresh Kumar ¹, S. D. Singh ¹, D. N. Swaroopa Rani ¹, P. K. Aggarwal ¹

Affiliations
1 Centre for Environment Science and Climate Resilient Agriculture, Indian Agricultural Research Institute, New Delhi 110 012, IN

Abstract

Regional climate models (RCMs) are considered to be more useful than general circulation models for assessing impacts of climate change scenarios in agriculture. In this communication, the climatic outputs of an RCM-PRECIS (providing regional climates for impact studies) model were analysed by comparing its baseline simulation daily weather data on temperature and precipitation patterns with the observed weather for the corresponding period (1960-1990) in order to find out the bias in the model. Results showed that model could simulate the mean weather parameters on an aggregated scale, but could not satisfactorily represent spatio-temporal variations. There exists a bias towards higher precipitation along with more intense warm and cold events in the baseline simulation. In order to quantify the impacts of the PRECIS model biasness in baseline simulations on crop performance, rice (kharif season) and wheat (rabi season) yields were simulated using the observed weather and the PRECIS baseline weather for several locations representing the Indo-Gangetic Plains. With more extreme weather parameters in the baseline simulated data, the grain yields of rice and wheat were reduced, even causing wheat crop failure in several years as against none observed. The results indicated that using PRECIS baseline daily weather may cause bias in crop performance assessments. Since the bias in baseline will be carried forward in the assessment of future climatic impacts, there is a need to develop more reliable regional climate scenarios for the Indian region.

Keywords

Climate Change, Crop Yield, Impact Assessment, Regional Climate Models.

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Bimal Prasanna Mohanty ¹, D. Karunakaran ¹, Arabinda Mahanty ¹, Satabdi Ganguly ¹, Dipesh Debnath ¹, Tandrima Mitra ¹, Sudeshna Banerjee ¹, Anil Prakash Sharma ¹, T. V. Sankar ², R. Anandan ², Suseela Mathew ², K. K. Asha ², Kajal Chakraborty ³, P. Vijayagopal ³, B. N. Paul ⁴, N. Sridhar ⁴, S. Chanda ⁴, Debajit Sarma ⁵, Nityanand Pandey ⁵, Neetu Shahi ⁵, Pushpita Das ⁵, Partha Das ⁵, Md. Shahbaz Akhtar ⁵, J. Syama Dayal ⁶, K. K. Vijayan ⁶, S. Kannappan ⁶, G. Venkateshwarlu ⁷, S. D. Singh ⁸, Madan Mohan ⁸, B. Meenakumari ⁸, S. Ayyappan ⁹

Affiliations
1 ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, IN
2 ICAR-Central Institute of Fisheries Technology, Cochin 682 029, IN
3 ICAR-Central Marine Fisheries Research Institute, Cochin 682 018, IN
4 ICAR-Central Institute of Freshwater Aquaculture, Bhubhaneswar 751 002, IN
5 ICAR-Directorate of Coldwater Fisheries Research, Bhimtal 263 136, IN
6 ICAR-Central Institute of Brackishwater Aquaculture, Chennai 600 028, IN
7 ICAR-Central Institute of Fisheries Education, Mumbai 400 061, IN
8 ICAR-Fisheries Science Division, Krishi Anusandhan Bhawan II, Pusa, New Delhi 110 012, IN
9 Krishi Bhavan, Indian Council of Agricultural Research, New Delhi 110 012, IN

Abstract

No Abstract.

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Nandini Sarwate ¹, S. D. Singh ¹

Affiliations
1 Govt. New Girls P.G. College, Indore, IN

Abstract

No comprehensive medical examination can be complete without the classic directive "Open your mouth and say Ah". Many astute doctors also add "let me see your nails". They know that these evolutionary descendants of claws can help them for a better diagnosis of many serious illnesses.

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Nandini Sarwate ¹, Kamlesh Sharma ², S. D. Singh ³

Affiliations
1 Government N.G.P.G.College, Indore, IN
2 Baba Sahib Ambedkar National Social Institute, IN
3 Chacha Nehru Bal Chikitsalaya and Anusandhan Kendra, Indore, IN

Abstract

Anaemia is the most prevalent nutritional disease in the world. The magnitude of this problem is much greater in India than in any other developing countries. According to the report of the WHO meeting on Nutritional anaemia in India about 50 per cent of school going children are anaemic.

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Yogesh Prasad Rajbhar ¹, S. D. Singh ¹, Mohan Lal ¹, Gopal Singh ¹, P. L. Rawat ¹

Affiliations
1 Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (U.P.), IN

Abstract

An experiment was conducted at Zonal Research Centre -Nagina (Bijnor)-246 762(U.P.) during 2000 to evaluate the performance of high density planting of mango (Mangifera indica L.). The mango variety Dashehari scion wood of 20-22cm grafted on seedling ischolar_mainstock in July 1999 were planted at Horticulture Section in August, 2000 at two spacing viz., 10m × 10m (100 plants/ha-normal density) and 3.0m × 3.0 (1111plants/ha-high density). Five grafts were planted in normal density and 160 grafts were planted in high density employing about 0.1940 ha area. Grafts in normal density were planted at marked points prepared by pit digging (1×1×1m) and then by filling the pits with dug soil mixed with 100 g N, 75 g P₂O₅ and 75 g K₂O fertilizer mixture, whereas grafts in high density were planted directly with the use of fertilizers containing 100 kg N, 75 kg P₂O₅ and 75kg K₂O/ha. Normal package of pracices was applied in both the system of plantings. The plant height (5.30m) was recorded under normal planting whereas it was found little different in high density of mango at 11^th year of their planting. The stem girth under normal system was noted as 55.7cm whereas,it was slightly reduced to 50.7cm under high density of planting. The expansion of East-West and North- South direction both were recorded same as 3.10m and 3.03m in normal planting and high density planting, respectively. The fruit yield 22.30q/ha was noted under normal density of planting whereas, it was 242.20q/ha at 5^th year of planting under high density planting system. The fruit yield ranged from 22.30to 109.80 q/ha from 5^th year to 11^th year, respectively under normal system of planting whereas it ranged from 242.2 to 1093.22q/ha under HDP system of planting. The observations showed that the fruit yield ratio of normal system of planting to HDP were 1:10.86, 1:9.92, 1:9.90,1:8.67, 1:9.80, 1:9.27 and 1:9.95 from 5^th year to 11^th year of age, respectively. So, it is a very informative and need of the hour to plant HDP system of mango just to get 9 to 10 times more yield for increasing mango productivity and to reach the king of fruit to the common people.

Keywords

High Density Planting, Mangifera indica, Mango.

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S. K. Maity ¹, Anil Kumar Rajak ², M. Chandra Shekhar ¹, S. D. Singh ¹

Affiliations
1 Metal Extraction and Forming, CSIR-National Metallurgical Laboratory, Jamshedpur, IN
2 Dept. of Metallurgical Engineering, BIT, Sindhri, IN

Abstract

A study was carried out to develop a low alloy ultra high strength steel by induction melting and thermomechanical treatment (TMT) containing alloying elements like carbon, manganese, molybdenum, chromium and vanadium. A base alloy was prepared with 0.24%C, 1.16% Mn, 0.23% Si, 5.61% Cr, 0.42%V, 1.01% Mo, 0.026%S and 0.032%P. It showed tensile strength of 1467 MPa, yield strength of about 1180 MPa, impact strength of 6.3J and elongation of 5.9% in as-tempered condition. Other alloy was prepared by addition of 0.054% titanium with the base composition. It displayed tensile strength, yield strength, impact toughness and % elongation of 1615 MPa, 1240 MPa, 8.2J and 6.15%, respectively. The optical, SEM and TEM microstructures confirmed that the base alloy and the titanium alloy consisted with tempered lath martensites.
The remaining part of the ingot was further processed by the thermomechanical treatment. The ingots were rolled in two passes, initially at 950°C and subsequently at 850°C followed by immediate cooling in oil. The TMT plates of the base alloy confirmed the tensile strength of 1755 MPa, yield strength in excess of 1460 MPa and impact strength of 9.1J. The titanium added TMT plate displayed tensile strength of 1860 MPa, yield strength of 1580 MPa and impact strength of 10.1J. Microstructures of titanium added alloy consisted finer lath martensite and precipitates of titanium carbides/carbonitrides. It was observed that the addition of titanium significantly improved the mechanical properties of 0.2C-Cr Mn Mo V alloys and the mechanical properties were also improved significantly by thermomechanical treatment.

Keywords

Ultra High Strength Steel, Thermomechanical Treatment, Mechanical Properties, Microstructure.

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S. D. Singh ¹, Rakesh Mathur ¹, R. K. Srivastava ²

Affiliations
1 Dept. of Applied Mechanics, MNNIT, Allahabad, IN
2 Dept. of Mech. Engg., MNNIT, Allahabad, IN

Abstract

This study aims at dynamic behaviour of a Linke Hofmann Busch coach and its sensitive parameters against track irregularities considering various suspended equipment. The randomly distributed track irregularities characterized in terms of Indian Rail Road PSD standard are considered main source of excitation that produces undesired vibrations. The coach body and bogie frame subjected to 4 degree of freedom motions (bounce, lateral, roll and pitch) are modelled using finite element methodology where system matrices such as mass, stiffness and damping matrices are obtained for eigenvalue solution. Using modal parameters obtained as above and PSD of track irregularities, both vertical and lateral mean square acceleration responses (MSAR) are determined at various points of concern on coach body. It is observed that the vertical peak responses occur in low frequency range (0-10 Hz) which is caused by long wavelength irregularities of track that causes discomfort. It is also observed that constant peak lateral responses occur at still lower frequency as compared to vertical response which again causes discomfort to vehicle riders. This concludes that there is a further scope of improvement in comfort level with minor adjustments of suspended equipment of a LHB coach. A sensitivity analysis based on the partial derivatives against FRF displacement is conducted and most sensitive design parameters are obtained for optimization to improve ride comfort. It is suggested that if the mass of bio toilet tanks and relative position of battery box + transformer unit i.e. most sensitive parameters of suspended equipment are changed then the ride comfort can be improved

Keywords

Linke Hofmann Busch Coach, Suspended Equipments, Power Spectral Density, Dynamic Responses, Finite Elements.

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