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The successive approximation register analog to digital converter (SAR ADC) technique is not yet mature in China mainly because of the imperfect analog module of the SAR ADC. The purpose of this design was to optimize the analog module by designing and making a 8-bit 1MHz SAR ADC and testing a 12-bit SAR ADC theoretically and by simulation. The design of(More)
Inkjet printing is widely used in functional product manufacturing. Performing a printing task requires communication and synchronization among multiple subsystems (e.g. motion and drop ejection), which introduces complexity in the overall printing system. A user interface has been developed, which enables users to input printing parameters and patterns for(More)
Here, we describe a concise, enantioselective, and scalable synthesis of (-)-colchicine (9.2% overall yield, >99% ee). Moreover, we have also achieved the first syntheses of (+)-demecolcinone and metacolchicine, and determined their absolute configurations. The challenging tricyclic 6-7-7 core of colchicinoids was efficiently introduced using an(More)
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