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A method has been developed to obtain uniform thin layers of the supramolecule cryptophane A (CrypA) on quartz crystals to produce high-sensitivity gravimetric methane gas sensors. Molecular mechanics and ab initio simulations were used for the first time to calculate the binding energy of methane to CrypA. The results justify the use of CrypA to selectively sense methane amongst a mixture of gases...
In this paper we compared both the timing resolution and the 2-dimension (2D) decoding map of two different reflector patterns of PMT-Quadrant-Sharing (PQS) block to obtain an optimized detector design for Time-of-Flight (TOF) PET application. Light reflectors (ESR mirror film from 3M Co.) in a PQS scintillation crystal block control the light-sharing ratio and light spread angle to the PMTs that...
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