Ion-beam technology provides a unique and exciting way of modifying the near-surface region of a solid; controlling its surface properties, adding beneficial impurities in the near-surface region, modifying the crystallinity, and providing a control and specificity that exceeds almost all other methods of surface modification.
文/Sobereva@北京科音 2019-Mar-23
由于经常有人问Packmol怎么安装、怎么用，这里就写一篇文章，做一个完整的介绍，初学者应该都能读懂，之前用过的人看了可能还能了解一些之前没注意到的细节和技巧。笔者在北京科音的分子动力学与GROMACS培训班里会对Packmol讲得更具体、给更多例子。
2015 marks 50 years of successful NASA missions to Mars starting with Mariner 4 in 1965. Since then, a total of 15 robotic missions led by various NASA centers have laid the groundwork for future human missions to the Red Planet. The journey to Mars continues with additional robotic missions planned for 2016 and 2020, and human missions in the 2030s.
We’ve taken giant leaps and left our mark in the heavens. Now we’re building the next chapter, returning to the Moon to stay, and preparing to go beyond. We are NASA – and after 60 years, we’re just getting started.
We Are NASA, Youtube.
Lava Sound Studios sound, SoundCloud.
“绝大多数科学技术人员热爱党、热爱社会主义，努力同工农兵相结合，满腔热情地对待自己从事的科学技术工作，作出了成绩……就整个说来，不愧是我们工人阶级自己的又红又专的科学技术队伍。”
——1978年，邓小平《在全国科学大会开幕式上的讲话》
