采用鸭蛋壳为原料,利用超声波强化鸭蛋壳生产乳酸钙的过程,以乳酸钙的纯度和产率为指标,通过单因素试验与正交试验设计,得到制备乳......

通过对白鹳和黑鹳的卵壳成分测定及电镜扫描发现：白鹳卵壳中N、Fe、P、Hg的含量明显高于黑鹳，而黑鹳中的Na则高于白鹳；白鹳和黑鹳的卵......

Isotopic data obtained from the dinosaur eggshells and pedogenic nodules(pedonodules)are interpreted in terms of palaeoc......

The use of waste materials as low-cost adsorbents is attractive due to their contribution in the reduction of costs for ......