摘要：As the kinetically sluggish oxygen evolution reaction(OER)is considered to be a bottleneck in overall water splitting,it is necessary to develop a highly active and stable electrocatalyst to overcome this ***,we successfully fabricated a three-dimensional iron-dysprosium oxide co-regulated in-situ formed MOF-Ni arrays on carbon cloth(FeDy@MOF-Ni/CC)through a facile two-step hydrothermal *** studies demonstrate that the designed FeDy@MOF-Ni/CC catalyst requires an overpotential of only 251 mV to reach 10 mA cm-2 with a small Tafel slope of 52.1 mV ***,the stability declined by only 5.5%after 80 h of continuous testing in 1.0 M ***,a cell voltage of only 1.57 V in the overall water splitting system is sufficient to achieve 10 mA cm-2;this value is far better than that of most previously reported *** excellent catalytic performance originates from the unique 3D rhombus-like structure,as well as coupling synergies of Fe-Dy-Ni *** combination of lanthanide and transition metal species in the synthesis strategy may open entirely new possibilities with promising potential in the design of highly active OER electrocatalysts.

摘要：为广泛宣传广东省红色印迹,推动党史学习教育走深走实,在研究数字多媒体地图系统的基础上,提出利用“互联网+”新业态,将广东省红色印迹的地理信息、历史知识与虚拟现实等技术结合起来开展党史宣传,设计并建设了“广东红色印迹线上展馆”,为每个地级市定制专属二维码,提供红色印迹线上展示查询、导航定位、语音介绍、全景浏览等服务,实现足不出户便能沉浸式参观广东省红色印迹。

摘要：研究了在TeleAtlas环境下广州多媒体电子地图集的设计,特别是对多媒体电子地图集功能设计原则、数据流程设计、质量控制、数据的选择原则和处理、数据的分类和组织做了重点研究,这些研究都是基于以往多媒体电子地图集制作的总结。