摘要：Three-dimensional(3D)bioprinting is a powerful approach that enables the fabrication of 3D tissue constructs that retain complex biological ***,the dense hydrogel networks that form after the gelation of bioinks often restrict the migration and proliferation of encapsulated ***,a sacrificial microgel-laden bioink strategy was designed for directly bioprinting constructs with mesoscale pore networks(MPNs)for enhancing nutrient delivery and cell *** sacrificial microgel-laden bioink,which contains cell/gelatin methacryloyl(GelMA)mixture and gelled gelatin microgel,is first thermo-crosslinked to fabricate temporary predesigned cell-laden constructs by extrusion bioprinting onto a cold ***,the construct is permanently stabilized through photo-crosslinking of *** MPNs inside the printed constructs are formed after subsequent dissolution of the gelatin *** MPNs allowed for effective oxygen/nutrient diffusion,facilitating the generation of bioactive ***,osteoblast and human umbilical vein endothelial cells encapsulated in the bioprinted large-scale constructs(≥1 cm)with MPNs showed enhanced bioactivity during *** 3D bioprinting strategy based on the sacrificial microgel-laden bioink provided a facile method to facilitate formation of complex tissue constructs with MPNs and set a foundation for future optimization of MPN-based tissue constructs with applications in diverse areas of tissue engineering.

摘要：智慧家庭等各类新型业务有对网络提速升级的需求,分析目前家庭内部组网的现状与瓶颈,研究各类场景下的FTTR(光纤到房间)解决方案。综合对比FTTR与传统组网方案的优缺点,得出结论:FTTR千兆全光纤化家庭组网方案具备超高带宽、超低时延、智能连接、绿色环保四大特点,能够提供超千兆带宽到每个房间,打造以人和终端为中心的超高速信息服务,提供高品质的宽带体验,构筑智慧家庭的全光底座。

摘要：工业互联网是提升国家工业竞争力的关键,传统工厂网络在性能、稳定性、业务升级等方面已经逐渐无法跟上制造业的发展步伐。基于此,对面向制造业的千兆光网接入方案进行研究,分析传统工厂网络现状及瓶颈,阐述工业PON(无源光网络)技术与优势,针对离散制造行业、创新园区、特殊流程行业三个典型场景,提出创新的工业PON解决方案,实现一张光网全场景覆盖、全业务承载,助力制造业智能化转型。

摘要：50G-PON(50 Gbit/s无源光网络)是实现万兆光接入网络底座的关键技术,50G-PON面临与1G-PON、10G-PON两代兼容甚至三代兼容的情况。文章列举万兆宽带网络应用场景,简介50G-PON技术。综合考虑与现有PON网络共存、技术与产业链发展、建设投资等因素,制定面向GPON体系和EPON体系的50G-PON升级演进方案,为运营商PON网络升级指明方向,助力光接入网迈向“万兆时代”。

摘要：前传在5G(第五代通信技术)承载网性能与网络优势发挥上起到越来越重要的支撑作用。文章通过各类技术在5G前传承载中的应用研究,充分对比差异及优缺点,得出C-RAN(集中化无线接入网)方式下高速WDM-PON(波分复用无源光网络)作为前传技术具备建网快捷、建设成本低、运营维护简便等多种优势,为WDM-PON技术在5G前传网络中的规模部署提供有力支撑,也能更快推动WDM-PON产业链的成熟和发展。

摘要：针对超高带宽业务需求及现网EPON接入方式进行提速需求分析,提出10G EPON整体升级替换、10G EPON分纤叠加,降分光比三种提速方案,从综合造价、网络能力及演进、工程实施难度、割接风险等方面,运用综合效益评估、定量分析与定性分析等多种研究方法,得出不同场景下的最优提速方案.