The variation of stable isotope ratios in natural waters provides valuable information that can be used to trace water movement. Evaporation plays a crucial rol
A novel vortex identification method for the visualization of the flow field is used for the study of the stall process of a transonic compressor. The parameter
In the presence of diethyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate (DHP) and a catalytic amount of potassium iodide,several α-halo ketones were easi