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Accurate estimation of distortion-free spectrum is important but difficult in various applications including spectral CT systems. To reconstruct the incident spectrum, there are two key problems to solve. One is the acquisition of detector response function. Different from many existing methods that either require detailed Mont-Carlo modeling of the detector system, or require monochromatic light...
A lab scale biological aerated fiter(BAF) reactor with an effective volume of 12.1 L and zeolite as media is operated at 7??C treating synthetic sewage continuously. The nitrification properties and the impacts of different operation parameters such as HRT, effluent recirculation and COD/NH3N(C/N) on this process are studied respectively. The results suggest that the HRT has a great influence on the...
Hard X-ray phase-contrast imaging can provide high sensitivity of weakly absorbing low-Z objects in medical and biological fields. Grating-based differential phase-contrast (DPC) method which relies on Talbot self-imaging effect have been paid more attention because it can work with conventional X-ray tube and show great potential for clinic use. Meanwhile tomosynthesis as a 3D reconstruction method...
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