Recently reported plasmon-induced transparency(PIT)in metamaterials endows the optical structures in classical systems with quantum optical e什ects.In particula
以国内某船厂承接并批量化建造的通用型海上浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)为研究对象,重点阐述在项目设计-采购-施工(Engineering Procurement Construction,EPC)模式下的进度计划管理系统的实践和完善。基于管控模式的优化,借助项目进度软件Oracle Primavera 6建立并完善海工项目在EPC模式下的进度管理体系和运行流程,从而达到规范化、标准化、国际化的项目管理要求,有效提高项目进
A phase-shifted fiber Bragg grating[PS-FBG]based on a microchannel was proposed and realized by combining the pointby-point scanning method with chemical etchin
In this work,inspired by advances in twisted two-dimensional materials,we design and study a new type of optical hi-layer metasurface system,which is based on s
With the increasing demand of sustainable and eco-friendly resources,it is very attractive to use waste leaves for activated carbon (AC) preparation that can be
Up-convertion[UC]perovskite Er3+-doped PbTiO3[Er-PTO]nanoparticles with green and red emissions were synthesized via the hydrothermal method.The UC properties w