《自然》（20220120出版）一周论文导读
For decades we have known that the Sun lies within the Local Bubble， a cavity of low-density， high-temperature plasma surrounded by a shell of cold， neutral gas and dust. However， the precise shape and extent of this shell， the impetus and timescale for its formation， and its relationship to nearby star formation have remained uncertain， largely due to low-resolution models of the local interstellar medium. Here we report an analysis of the three-dimensional positions， shapes and motions of dense gas and young stars within 200 pc of the Sun， using new spatial and dynamical constraints. We find that nearly all of the star-forming complexes in the solar vicinity lie on the surface of the Local Bubble and that their young stars show outward expansion mainly perpendicular to the bubble’s surface. Tracebacks of these young stars’ motions support a picture in which the origin of the Local Bubble was a burst of stellar birth and then death taking place near the bubble’s centre beginning approximately 14 Myr ago. The expansion of the Local Bubble created by the supernovae swept up the ambient interstellar medium into an extended shell that has now fragmented and collapsed into the most prominent nearby molecular clouds， in turn providing robust observational support for the theory of supernova-driven star formation.
电脑BIOS设置（07）--DELL T340服务器
服务器主板的BIOS设置与普通台式机电脑确实有差别，但是大部分功能设置还都是一样的 ，毕竟服务也是电脑，只是比普通家用电脑更稳定一些。服务器主板上自带显卡（不是核显也不是独显，即使不插内存条，也能显示，这一点与普通台式机是有区别的。），硬盘接口板载支持SATA模式。