Gopal C. Das

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Today's query processing engines do not take advantage of the multiple occurrences of a relation in a query to improve performance. Instead, each instance is treated as a distinct relation and has its own independent table access method. In this paper, we present <i>MAPLE</i>, a <i>M</i>ulti-instance-<i>A</i>ware <i>PL</i>an <i>E</i>valuation engine that(More)
We report the selective recognition of sulfate anion in aqueous medium at biological pH 7.2 over the other interfering anions based on naphthoic acid bearing tripodal ligand by applying fluorescence turn off-on mechanism. The carboxylic acid groups in the ligand enhance the solubility in water and enable it to form complex with copper salt. Thus formed(More)
The reversible blockage of synthetic pores formed by rigid-rod beta barrels, either by substrates or products, was used to sense a variety of enzymatic reactions in high-throughput format with "naked-eye" fluorescent detection. Improvement of sensor sensitivity beyond three orders of magnitude by straightforward internal mutations underscores the functional(More)
Bivoltine rearing in tropical regions is highly unpredictable due to fluctuating temperature and humidity conditions. It is therefore extremely imperative to develop a stable bivoltine cocoon crop under adverse environment of the tropices. Improvement of the existing bivoltine lines through introgression of true multivoltine tolerant factors by conventional(More)
The cis-acting elements for the early and late promoters, as well as the enhancer in the prototype strains of human polyomavirus BK (BKV) are located within a 500 bp intergenic region. We previously studied the specificity of protein binding in this region in vitro and showed that the interaction of proteins of the nuclear factor-1 (NF-1) family is crucial(More)
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