Eastern India (eastern + india)

Distribution by Scientific Domains

Selected Abstracts

Modern Forests: Statemaking and Environmental Change in Colonial Eastern India

Neil Thin
Modern Forests: Statemaking and Environmental Change in Colonial Eastern India. K. Sivaramakrishnan. Stanford, CA: Stanford University Press, 1999. ix. 341 pp., illustrations, tables, bibliography, index. [source]

Essential oil composition of genetically diverse stocks of Murraya koenigii from India

V. K. Raina
Abstract An Erratum for this article has been published in Flavour and Fragrance Journal 17(5) 2002, 404. The essential oil composition of four genetically diverse stocks of Murraya koenigii leaves cultivated at the CIMAP Research Farm, Lucknow, were analysed by GC and GC,MS. The oil from the stock of the northern Indian plains, Lucknow, showed ,-pinene (70.0%), ,-caryophyllene (6.5%) and ,-pinene (5.4%) as the major constituents, while the oil from the stock of the lower Himalayan range, Pant Nagar, showed ,-pinene (65.7%), ,-pinene (13.4%) and ,-phellandrene (7.4%) as the major constituents. In contrast to the above, the oil from the stock of southern India, Kozhikode, showed ,-caryophyllene (53.9%), aromadendrene (10.7%) and ,-selinene (6.3%) as the major constituents. On the other hand, the oil from the stock of eastern India, Bhubaneshwar, showed ,-phellandrene (30.2%), ,-caryophyllene (24.2%), ,-pinene (15.0%), (E)-,-ocimene (5.0%) and aromadendrene (4.5%) as the major constituents. The GC,MS analysis of the stock oil samples from the northern Indian plains, lower Himalayan range, southern and eastern India resulted in the identification of 65, 56, 57 and 66, constituents, representing 99.2%, 98.8%, 87.4% and 98.2% of the oils, respectively. Copyright 2002 John Wiley & Sons, Ltd. [source]

Development of design flood hydrographs using probability density functions

Niranjan Pramanik
Abstract Probability density functions (PDFs) are used to fit the shape of hydrographs and have been popularly used for the development of synthetic unit hydrographs by many hydrologists. Nevertheless, modelling the shapes of continuous stream flow hydrographs, which are probabilistic in nature, is rare. In the present study, a novel approach was followed to model the shape of stream flow hydrographs using PDF and subsequently to develop design flood hydrographs for various return periods. Four continuous PDFs, namely, two parameter Beta, Weibull, Gamma and Lognormal, were employed to fit the shape of the hydrographs of 22 years at a site of Brahmani River in eastern India. The shapes of the observed and PDF fitted hydrographs were compared and root mean square errors, error of peak discharge (EQP) and error of time to peak (ETP) were computed. The best-fitted shape and scale parameters of all PDFs were subjected to frequency analysis and the quartiles corresponding to 20-, 50-, 100- and 200-year were estimated. The estimated parameters of each return period were used to develop the flood hydrographs for 20-, 50-, 100- and 200-year return periods. The peak discharges of the developed design flood hydrographs were compared with the design discharges estimated from the frequency analysis of 22 years of annual peak discharges at that site. Lognormal-produced peak discharge was very close to the estimated design discharge in case of 20-year flood hydrograph. On the other hand, peak discharge obtained using the Weibull PDF had close agreement with the estimated design discharge obtained from frequency analysis in case of 50-, 100- and 200-year return periods. The ranking of the PDFs based on estimation of peak of design flood hydrograph for 50-, 100- and 200-year return periods was found to have the following order: Weibull > Beta > Lognormal > Gamma. Copyright 2009 John Wiley & Sons, Ltd. [source]

Haplotype Diversity at 20 Y-Chromosome Microsatellites in an Indo-Caucasian Population of Bengal, India

Anamika Singh M.Sc.
POPULATION: Sixty-one Indo-Caucasian individuals from eastern India. [source]

Point and areal PMP estimates for durations of two and three days in India

P R Rakhecha
The risk of dam failure in India, coupled with better analysis of extreme storm events, has led to the estimation of revised one-day probable maximum precipitation (PMP). For some water conservation projects where the catchment area is very large, there is a need to have estimates of PMP for durations of both two and three days. These are provided in this paper. It was found that the two-day PMP over the Indian region varied from 100 cm over the central peninsula to over 290 cm in eastern India. For a duration of three days the corresponding values are 120 cm and 370 cm. For water management projects which include impounding reservoirs, an estimate has been made of the probable maximum flood (PMF) based on the new PMP estimates. The results of the design flood estimates were compared with existing estimates at the same sites and in most cases were found to be considerably higher. A comparison of the revised estimates of PMF and recorded floods in India shows that the trend of the rates of runoff in relation to catchment area differ by an average of 38% for an area of 1000 km2 and 46% for an area of 10 000 km2. These results show that some dams in India may be unsafe in the event of the probable maximum flood. Copyright 2000 Royal Meteorological Society [source]