摘要：A native organ has heterogeneous structures, sirength, and cell components. It is a big challenge to fabricate organ prototypes with controllable shapes, strength, and cells. Herein, a hybrid method is developed to fabricate organ prototypes with controlled cell deposition by integrating extrusion-based 3D printing, electrospinning, and 3D bioprinting. Multi-scale sheets were first fabricated by 3D printing and electrospinning;then, all the sheets were assembled into organ prototypes by sol-gel react io n duri ng bioprinting. With this method, macroscale structures fabricated by 3D printing ensure the customized structures and provide mechanical support, nanoscale structures fabricated by electrospinning offer a favorable environment for cell growth, and different types of cells with controllable densities are deposited in accurate locations by bioprinting. The results show that L929 mouse fibroblasts encapsulated in the structures exhibited over 90% survival within 10 days and maintai ned a high proliferation rate. Furthermore, the cells grew in spherical shapes first and then migrated to the nano scale fibers showing stretched morphology. Additionally, a branched vascular structure was successfully fabricated using the presented method. Compared with other methods, this strategy offers an easy way to simultancously realize the shape control, nanolibrous structures, and cell accurate deposition, which will have potemidi applications in tissue cngineering.

摘要：本文介绍了智能光伏汇流箱的组成,给出了数据采集板的硬件构成和软件控制流程,并说明了具体应用。

摘要：为探讨黑鲷(Acanthopagrus schlegelii)♀×真鲷(Pagrus major)♂杂交子二代(杂交鲷)与黑鲷幼鱼适宜的投饵率,实验设计了2.5%、4.0%、5.5%及7.0%等4个投饵率,并比较了两种实验鱼在不同投饵率下的生长性能、生长相关基因表达及消化酶活性等方面的差异表现。结果显示:随着投饵率升高,杂交鲷及黑鲷的末体质量(FBW)、增重率(WGR)、特定生长率(SGR)及类胰岛素生长因子(igf1基因)表达量均先升高后降低,且4.0%组显著高于其他3组(P0.05);当投饵率升至4.0%时,脂肪酶活性显著降低(P0.05);当投饵率为4.0%和5.5%时,杂交鲷的FBW、WGR、SGR、胃蛋白酶活性及igf1基因表达量均显著高于黑鲷(P<0.05)。研究结果表明,杂交鲷及黑鲷的幼鱼适宜投饵率为4.0%,且杂交鲷的生长性能及消化能力均优于黑鲷。

摘要：为提高复合补偿型感应耦合电能传输系统的输出功率,丰富系统分析方法,运用3种不同的方法分析了LCL补偿结构的感应耦合电能传输系统。首先根据二端口理论,对LCL-S补偿结构进行了详细建模和分析,给出了固定原边线圈电流大小的参数配置方法;再根据交流阻抗分析法给出了LCL-P补偿结构的参数设计方法;然后通过能量守恒定律分析了LCL网络对电流的放大作用,给出了LCL-LCL补偿结构的参数配置方法。最后通过实验验证了上述3种补偿结构和参数配置方法的有效性。