An Illinois man is lucky to be alive after accidentally shooting himself in the head with a nail gun.Jan. 21, 2012 © 2025 NBCUniversal Media, LLC ...
通过第一性原理计算研究Si、Ge、Sn掺杂对MgH?(110)表面脱氢性能的影响,发现Si和Ge占据间隙位,Sn替代Mg位,导致Mg-H键弱化、带隙减小和结构不稳定。计算表明Ge最优,其次是Si和Sn。 氢能存储材料MgH?的掺杂优化机制研究 一、研究背景与意义 当前全球能源结构转型 ...
A Supervised Explainable Machine Learning Model for Perioperative Neurocognitive Disorder in Liver-Transplantation Patients and External Validation on the Medical Information Mart for Intensive Care ...