Learn More
A comparison of field and laboratory measurements of arsenic in groundwater of Araihazar, Bangladesh, indicates that the most widely used field kit correctly determined the status of 88% of 799 wells relative to the local standard of 50 microg/L As. Additional tests showthatthe inconsistencies, mainly underestimates in the 50-100 microg/L As range, can be(More)
The elevated arsenic (As) content of groundwater from wells across Bangladesh and several other South Asian countries is estimated to slowly poison at least one hundred million people. The heterogeneous distribution of dissolved arsenic in the subsurface complicates understanding of its release from the sediment matrix into the groundwater, as well as the(More)
Whereas serious health consequences of widespread consumption of groundwater elevated in As have been documented in several South Asian countries, the mechanisms responsible for As mobilization in reducing aquifers remain poorly understood. We document here a previously unrecognized and consistent relationship between dissolved As concentrations in reducing(More)
This paper deals with the development of an optimal policy for the single-vendor single-buyer integrated produc-tion}inventory system. The successive batches of a lot are transferred to the buyer in a "nite number of unequal and equal sizes. The successive unequal batch sizes increase by a "xed factor. The capacity of the transport equipment used to(More)
⎯Recently an algebraically derived optimal cost solution policy of the integrated vendor-buyer problem with equal sized batch transfer was presented. The solution technique was illustrated with a numerical example and in comparison with two available methods in the literature a significant cost reduction was shown. This paper highlights that the optimal(More)
Irrigation management is a key to efficient and timely water distribution in canal command areas keeping in view the crop factors, and for irrigation management adequate and always updated information regarding the irrigation system is needed. This paper illustrates a GIS Tool for Irrigation Management which provides information interactively for decision(More)
Drinking water in much of Asia, particularly in coastal and rural settings, is provided by a variety of sources, which are widely distributed and frequently managed at an individual or local community level. Coastal and near-inland drinking water sources in South and South East (SSE) Asia are vulnerable to contamination by seawater, most dramatically from(More)