Objective To study the feasibility and clinical value of 13th lymph nodes in predicting general lymph nodes metastases for periampullary carcinoma.Methods A tot
The Ming Dynasty city wall in Nanjing,a famous ancient cultural city located in the East China,was built of earth coated with bricks.It stands 14 meters or
Urban landscapes soils technogenic pollution research has been carried out in the areas affected by petrol stations.The soils were under study in regard of