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The impact scenarios, impact velocity were investigated based on 224 car-electric bicycle collision cases in IVAC (In-depth Investigation of Car Accident in Changsha) database. Cars were classified into three types: sedan, SUV and one box. According to analysis of traffic accident data, car-electric bicycle collision models were built up by using MADYMO. In order to analyze the kinematics of electric-bicycle-riders,...
Firstly, the different factors in the hydrological process and information treatment were analyzed. Secondly, application of the neural networks model with the basis of genetic Algorithms were studied. Thirdly, based on GIS map, the basin rainfall runoff forecast method was put forward. Through GIS rainfall information treatment, the precision of input datum to the rainfall runoff model was improved...
Demethyl salvicanol, a novel rearranged 9(10→20)-abeo-8, 11, 13-triene diterpene, has been synthesize for the first time. The zinc-promoted coupling reaction of benzyl bromide with ketone and the alkylation of ketone with iodide are the key steps.
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