为提高电磁辐射环境影响评价的科学性和准确性,考虑大型辐射源附近建筑物群对电磁环境的影响编制了电磁环境预测软件。提出计算建筑物群对射线产生单纯性多次反射时反射点通用算法、单纯性多次绕射时绕射点通用算法,将混合型路径转换成...为提高电磁辐射环境影响评价的科学性和准确性,考虑大型辐射源附近建筑物群对电磁环境的影响编制了电磁环境预测软件。提出计算建筑物群对射线产生单纯性多次反射时反射点通用算法、单纯性多次绕射时绕射点通用算法,将混合型路径转换成单纯型绕射路径的算法。将这些算法运用于角度z缓存区改进算法中,并采用场强精确算法编制程序。用该程序分别对两个通信基站、一个电视发射塔周边环境进行预测,预测结果与实测结果之间误差小于4 d B。说明该程序可以用于电磁环境影响评价。展开更多
Photo-rechargeable batteries based on photocathodes that have the dual function of collecting and storing solar energy offer an efficient method for solar energy utilization.Herein,NiCo-layered double hydroxides(NiCo-...Photo-rechargeable batteries based on photocathodes that have the dual function of collecting and storing solar energy offer an efficient method for solar energy utilization.Herein,NiCo-layered double hydroxides(NiCo-LDH)/ZnIn_(2)S_(4)/carbon nanotubes(CNTs)(recorded as CZN),a heterostructure photocathode,has been synthesized by layer-by-layer growth for photo-driven rechargeable aqueous zinc batteries(AZBs).The proposed photocathode exhibits typical photoelectric properties and offers the following advantages:good photoresponse in the visible light range,energy level/potential matching between ZnIn_(2)S_(4) and NiCo-LDH,and the conductive network formed by CNTs to promote charge transfer.The photo-driven rechargeable AZBs can harvest solar energy and store charge simultaneously,showing enhanced energy storage capability under illumination.The discharge capacity reaches 274.8 mAh·g^(-1) with a high photo-conversion efficiency of 1.120% at 8.0 A·g^(-1)(100 mW·cm^(-2),white light).In particular,the photo-driven rechargeable AZBs can be charged by light solely,achieving a discharge capacity of 116.3 mAh·g^(-1).This study shows that the novel design and synthesis of the heterostructure photocathode is crucial and significant to enhancing the practicality of solar energy.展开更多
文摘为提高电磁辐射环境影响评价的科学性和准确性,考虑大型辐射源附近建筑物群对电磁环境的影响编制了电磁环境预测软件。提出计算建筑物群对射线产生单纯性多次反射时反射点通用算法、单纯性多次绕射时绕射点通用算法,将混合型路径转换成单纯型绕射路径的算法。将这些算法运用于角度z缓存区改进算法中,并采用场强精确算法编制程序。用该程序分别对两个通信基站、一个电视发射塔周边环境进行预测,预测结果与实测结果之间误差小于4 d B。说明该程序可以用于电磁环境影响评价。
基金the financial support from 973 Program(No.2014CB932101)the National Natural Science Foundation of China,111 Project(No.B07004)+1 种基金Program for Changjiang Scholars and Innovative Research Team in University(No.IRT1205)the Fundamental Research Funds for the Central Universities(No.buctrc201527).
文摘Photo-rechargeable batteries based on photocathodes that have the dual function of collecting and storing solar energy offer an efficient method for solar energy utilization.Herein,NiCo-layered double hydroxides(NiCo-LDH)/ZnIn_(2)S_(4)/carbon nanotubes(CNTs)(recorded as CZN),a heterostructure photocathode,has been synthesized by layer-by-layer growth for photo-driven rechargeable aqueous zinc batteries(AZBs).The proposed photocathode exhibits typical photoelectric properties and offers the following advantages:good photoresponse in the visible light range,energy level/potential matching between ZnIn_(2)S_(4) and NiCo-LDH,and the conductive network formed by CNTs to promote charge transfer.The photo-driven rechargeable AZBs can harvest solar energy and store charge simultaneously,showing enhanced energy storage capability under illumination.The discharge capacity reaches 274.8 mAh·g^(-1) with a high photo-conversion efficiency of 1.120% at 8.0 A·g^(-1)(100 mW·cm^(-2),white light).In particular,the photo-driven rechargeable AZBs can be charged by light solely,achieving a discharge capacity of 116.3 mAh·g^(-1).This study shows that the novel design and synthesis of the heterostructure photocathode is crucial and significant to enhancing the practicality of solar energy.
