Objectives To assess the prognostic value of B-type natriuretic peptide (BNP) in severe AMI patients treated with intra-......

The relationship between the amount of tea cream and the chemical components contents in the original green tea infusion......

以Al-20Si-5Mg为原料,采用离心铸造技术制备含有高体积分数的Mg2Si和Si混杂增强铝基自生复合材料.观察复合材料的微观组织及断口形......