Background There are no clear guidelines on implant removal. Few have assessed the long-term outcomes of patients with implants left in-situ, or removed. Theref
With the increase in mining depth many mining areas in China have entered a period necessitating mining above aquifers.Production safety in coal mines in northe
Sediment samples with high spatial resolution (432 samples in total) and flow data were collected on the tidal flats in the mouth-bar region of the Yangtze Estu