The pressuremeter is a versatile piece of ground investigation equipment that can be used to test any type of soil or rock in situ. It quantifies in-situ stress, stiffness, strength and permeability……続きを見る
The author compares five primitive life forms from the Burgess Shale of over 500,000,000 years ago to five new technologies invented or developed in the first decade of the twentieth century in term……続きを見る
