摘要：本文阐述将一种自适应多相变换器(AMPC)用作适配级来提高光伏系统的功率转换链的效率和可靠性。为了说明AMPC的优点,文中首先介绍了单相和多相变换器效率的概念。针对光伏系统连续变化工作点的主要特性,提出了控制法则也要保证高的转换效率,而且设计了实验性样机来评估该适配级的性能。

摘要：Fe（3–x）O4 raspberry shaped nanostructures/graphene nanocomposites were synthesized by a one-step polyol-solvothermal method to be tested as electrode materials for Li-ion battery（LIB）. Indeed, Fe（3–x）O4 raspberry shaped nanostructures consist of original oriented aggregates of Fe（3–x）O4 magnetite nanocrystals, ensuring a low oxidation state of magnetite and a hollow and porous structure, which has been easily combined with graphene sheets. The resulting nanocomposite powder displays a very homogeneous spatial distribution of Fe（3–x）O4 nanostructures at the surface of the graphene sheets. These original nanostructures and their strong interaction with the graphene sheets resulted in very small capacity fading upon Li＋ion intercalation. Reversible capacity, as high as 660 m Ah/g, makes this material promising for anode in Li-ion batteries application.

摘要：在经由云存取数据的社会的移动设备的增长在在在服务器使用的硬盘驱动器 HDD 上要存储的信息的数量正在强加戏剧的增加。预报是密度将需要由差不多 35% 复合每年并且由 2,020 云存储能力增加的那 areal 将在相应于 2 Tb/in 的 areal 密度的 7 zettabytes 附近 2 。这在 HDD 在读 / 写的头从电磁的作家的磁性的杆要求增加的性能。写的当前的 state-of-art 被潜水艇 100 nm 尺寸的词法上复杂的磁性的杆承担，在设计的磁性的盾的环境，它需要在 50 nm 附近在记录媒介上把强壮的方向性的磁场送到区域吗？？