The emergence of cryo-electron microscopy (cryo-EM; also called electron cryo-microscopy) as a tool for structure determination has been a major development in structural biology. The method is well ...

Like all noble gases, xenon is colourless, odourless and inflammable — but it is also more reactive, and much rarer, than its lighter relatives. Ivan Dmochowski ponders how xenon, though initially ...

Abstract: Multiple-channel GaN heterostructures have been used to improve the device performance of high electron mobility transistors (HEMTs). The object is to achieve highly linear transconductance, ...

A «universal» linear formula for π--nucleus scattering lengths is derivedà la Fubini and Furlan from current algebra and PCAC. From its fit to data from pionic-atom, 2p−1s X-ray energy shifts we ...