Proceedings of the National Academy of Sciences of the United States of America, Vol. 87, No. 17 (Sep., 1990), pp. 6772-6776 (5 pages) We developed vector plasmids for the transformation of ...

For nearly a century, scientists have understood how crystalline materials—such as metals and semiconductors—bend without ...

No audio available for this content. February’s column focused on potential errors in orthometric heights using a digital barcode leveling system with multi-piece leveling rods. As stated in the ...

This is a subject I struggled with the first time I took it. Ironically, this was the engineering version of it. It wasn't until I took the rigorous, axiomatic version that everything clicked.