为了满足宽带光通信发展对高性能器件的要求，研究高效有源材料，以实现覆盖整个光通信波段的宽带光纤放大器，成为本领域的热点。掺铋光纤的近红外发光光谱覆盖了1100-1600nm的范围，成为宽带光通信领域的关键材料。根据上述应用需求和关键问题，本项目坚持理论与实验研究紧密结合的方式，提出了四个主要研究内容:(1)铋基团在掺铋光纤中扩散的动力学机制;(2)掺铋光纤发光中心标定及发光光谱研究;(3)铋-X共掺光纤的发光机理研究;(4)掺铋光纤超宽带发光特性的实验研究。本项目将解决掺铋光纤中多价态铋转换与光谱关联性问

本项目将以气体多分散粗糙颗粒两相流动为研究对象，采用快速切断气源测量技术测量气体双颗粒组分流化床内两种组分颗粒质量分数分布。以稠密气体分子运动论为基础，采用碰撞间隔理论，建立混合粗糙颗粒动理学，研究粗糙颗粒碰撞和摩擦对多分散颗粒的颗粒组分与颗粒组分之间动量和能量的传递和耗散规律，揭示粗糙颗粒组分之间的相间作用机理。构建气体多分散颗粒流动的非均匀流动结构的相间作用模型，研究多分散颗粒非均匀流动结构对气固相间作用的影响。建立考虑高浓度颗粒脉动流动影响的气相大涡模拟方法，研究气相湍流对多分散颗粒脉动特性的影响。

The Cellular and Molecular Biology(CMB)Training Program has contributed to the success of over 1,700 graduate student trainees for nearly 50 years.The ongoing need for this program is driven by the essential role that research plays in advancing our under

? DESCRIPTION: The 3D structural organization of the genome plays a key role in nuclear functions such as gene expression and DNA replication. One of the next grand challenges of biology is to determine the detailed 3D genome architecture and elucida

Аннотация к заявке: Планируется проведение широкого круга экспериментальных исследований динамических процессов на поверхности слоисто-неоднородных сред с целью выявления признаков, идентифицирующих образование дефектов, отслоений между покрытием и сотов

nnotation:The project is aimed at solving the actual problem of cutting materials at previously inaccessible speeds by expanding the technological capabilities of the advanced production technology of waterjet cutting.Waterjet cutting is one of the most