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With increasing understanding and availability of nuclear technologies, and increasing persuasion of nuclear technologies by several new countries, it is increasingly becoming important to monitor the nuclear proliferation activities. There is a great need for developing technologies to automatically or semi-automatically detect nuclear proliferation activities using remote sensing. Images acquired...
Iterative x-ray CT algorithms produce high-quality images but potentially do so at a prohibitive computational cost when applied to large problems. We describe how to implement SIRT, a well-known weighted least squares algorithm, for parallel execution using a commodity cluster of networked multi-core PCs. Algorithmic strategies include near-optimal relaxation which eliminates half of the iterations...
The synthesis of 3-substituted-3-(trimethylsilyl)cyclopropenes (X = CO 2 Et, CHO, CN) is described. Their acid sensitivity and thermal stability was probed and the reaction products were identified. In one case, a novel rearrangement to a Dewar furan maybe involved and this pathway was explored via kinetics and computations.
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