In this video, I test the Atomstack M4 laser engraver on .999 pure silver bullion, specifically a 1 troy ounce piece. Watch ...
Abstract: Synthesis of nanoparticles (NPs) by pulsed laser ablation in liquids (PLAL) is a well-established environment-friendly “green” technique capable of producing large quantities of NPs at a ...
As the general database for bibliology resources and for seed gene bank Chinese culture, the National Archives of Publications and Culture has fulfilled its responsibilities of plan coordination, ...