拜读某高等数学教材中发现了答非所问的速度改变问题，该教材某例题把速率改变的结果当成了速度改变的结果，因此有必要澄清加速与减速......

There are numerous published theories that cover the different biological processes relating to ageing. No one seems to ......

The investigation is generalized to clusters with sizes up to 3000 atoms, covering this way the range of sizes experimen......