Ataur R. Sarkar

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In the Bengal Basin, the land surface exposed during the last lowstand of sea-level around 20 ka, and now buried by Holocene sediment, is capped by an impermeable clay palaeosol that we term the Last Glacial Maximum Palaeosol (LGMP). The palaeosol strongly affects groundwater flow and controls the location of arsenic pollution in the shallow aquifers of our(More)
We report time-series data collected over two years for delta18O, delta2H, and Ca, Mg, K, and Cl, concentrations for 10 ponds in, and upflow of, an As-polluted region of southern West Bengal. We compare the compositions of As-polluted groundwaters from wells with the compositions of waters in ponds upflow, and within the range of influence, of the wells.(More)
Highly lattice-mismatched InP/Si nanowire heterostructures were synthesized using the metal-organic chemical vapor deposition (MOCVD) process at 450 ºC. The InP nanowire diameter as high as 500 nm is much thicker than the critical diameter (~24 nm for InP/Si) predicted by a recent theoretical work on the coherent growth of nanowire heterostructures. We(More)
The spontaneous leakage of artifacts into the interstellar medium and the associated orbital characteristics of different planets have been considered for estimating the frequency of the artifacts likely to fall down to the Earth and the other planets. Information about the astrodynamical aspect of paleovisitology, particularly regarding the formation and(More)
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