The earliest known fired ceramic objects are clay figurines dating to roughly 24,000 BCE found in large numbers in Central Europe. In the Americas, ceramic production can be dated to 2500 BCE. The ...

A cost- and time-effective solution for well intervention operations employs coiled tubing. Instead of removing the tubing from the well, which is how workover rigs fix the problem, coiled tubing ...

Figure 1: Physical map of the critical MUL region. We isolated total RNA from lymphoblastoid cells of four MUL patients, one MUL carrier and one control individual using the RNeasy RNA extraction ...

Coiled tertiary structure that forms when strain is placed on a DNA helix by overwinding or underwinding of the helix. An overwound DNA exhibits positive supercoiling; an underwound DNA exhibits ...