We theoretically study the spin dynamics in antiferromagnets (AFs) under influence of an electric current. identify two different sources spin-transfer torques that stem from uniform (\(\boldsymbol{v}_{n}\)) and staggered (\(\boldsymbol{v}_{\ell }\)) electron densities. While former is well recognized, latter often overlooked. show both \(\boldsymbol{v}_{n}\) \(\boldsymbol{v}_{\ell }\) contribu...

DNA polymerase gene from Thermus aquaticus strain YT1 was amplified using VENTTM DNA po-lymerase and cloned under the control of X.PR promoter and expression was induced by a shift in tern perature. The culture was then sonicated, and after centrifugation the lysate was treated with poly‌ethyleneimine followed by a salting-out step. Finally the protein was precipitated with ammonium sulfate and...

Although changes to visual acuity in spaceflight have been observed in some astronauts since the early days of the space program, the impact to the crew was considered minor. Since that time, missions to the International Space Station have extended the typical duration of time spent in microgravity from a few days or weeks to many months. This has been accompanied by the emergence of a variety...

A light induced frequency shift of the 0-0 line was measured in two-photon excitation spectra of single diphenyloctatetraene molecules doped in a crystal matrix. The shifts were proportional to the laser power with a slope of about 600 MHzyW when the laser beam of about 300 mW power was focused to a diameter of 2 mm. Significantly, the observed line broadenings were an order of magnitude smalle...