Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Abstract: Provided are a drug for treating artery-related diseases and the use thereof. Specifically, provided are the use of a class of compounds of formula I in the treatment of artery-related diseases. Experiments show that the compounds of formula I have a significant effect on aneurysm, intramural hematoma and/or atrerial dissection.