检索范围:
排序: 展示方式:
Baoyan Duan, Yiqun Zhang, Guangda Chen, Ze Zhao, Jianwei Mi, Xun Li, Lin Yang, Xi Li
《工程(英文)》 doi: 10.1016/j.eng.2023.11.007
This study systematically introduces the development of the world's first full-link and full-system ground demonstration and verification system for the OMEGA space solar power satellite (SSPS). First, the OMEGA 2.0 innovation design was proposed. Second, field-coupling theoretical models of sunlight concentration, photoelectric conversion, and transmitting antennas were established, and a systematic optimization design method was proposed. Third, a beam waveform optimization methodology considering both a high beam collection efficiency and a circular stepped beam shape was proposed. Fourth, a control strategy was developed to control the condenser pointing toward the sun while maintaining the transmitting antenna toward the rectenna. Fifth, a high-efficiency heat radiator design method based on bionics and topology optimization was proposed. Sixth, a method for improving the rectenna array’s reception, rectification, and direct current (DC) power synthesis efficiencies is presented. Seventh, high-precision measurement technology for high-accuracy beam-pointing control was developed. Eighth, a smart mechanical structure was designed and developed. Finally, the developed SSPS ground demonstration and verification system has the capacity for sun tracking, a high concentration ratio, photoelectric conversion, microwave conversion and emission, microwave reception, and rectification, and thus satisfactory results were obtained.
关键词: OMEGA-SSPS Full-link and full-system Beam collection efficiency Circular stepped beam shape Smart structure Field coupling theoretical model Beam pointing control
Investigating the raveling test for full-depth reclamation
Robert HILL, Andrew BRAHAM
《结构与土木工程前沿(英文)》 2018年 第12卷 第2期 页码 222-226 doi: 10.1007/s11709-017-0423-9
Exergy-energy analysis of full repowering of a steam power plant
S. NIKBAKHT NASERABAD,K. MOBINI,A. MEHRPANAHI,M. R. ALIGOODARZ
《能源前沿(英文)》 2015年 第9卷 第1期 页码 54-67 doi: 10.1007/s11708-014-0342-6
关键词: full repowering exergy analysis V94.2 and V94.3A gas turbines double-pressure HRSG duct burner Bandarabbas steam power plant efficiency
具有环形接收区域的微波无线能量传输发射天线口径场分布设计方法 Article
李勋, 段宝岩, 张逸群, 郭永新
《工程(英文)》 2023年 第30卷 第11期 页码 63-74 doi: 10.1016/j.eng.2023.07.016
本文提出了一种具有环形接收区域的微波无线能量传输发射天线口径场分布设计方法。该设计的目标是最大化辐射到环形接收区域上的微波功率与总传输功率的比值。通过将口径场幅度分布表示为一组特殊级数的求和,可将该最优设计问题简化为寻找两个实二次型的最大比值。基于矩阵论,可通过确定最大特征值及其对应的特征向量来解决该优化问题。为满足安全要求,将接收区域外的峰值辐射电平视为额外约束。为解决该约束优化问题,提出了将灰狼优化算法和Nelder-Mead单纯形法结合的混合优化方法。为证明所提方法的有效性,首先,对连续口径场分布进行数值仿真实验。然后,使用离散阵列天线来验证优化结果的正确性,其中单元假设为各向同性的点源。最后,采用微带贴片阵列来进一步验证所提出方法的有效性。
Ultrathin microcrystalline hydrogenated Si/Ge alloyed tandem solar cells towards full solar spectrum
Yu Cao, Xinyun Zhu, Xingyu Tong, Jing Zhou, Jian Ni, Jianjun Zhang, Jinbo Pang
《化学科学与工程前沿(英文)》 2020年 第14卷 第6期 页码 997-1005 doi: 10.1007/s11705-019-1906-0
关键词: thin films solar cells quadruple junction solar cell amorphous silicon silicon germanium alloy quantum efficiency
Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment
《环境科学与工程前沿(英文)》 2022年 第16卷 第3期 doi: 10.1007/s11783-021-1467-6
• A full scale biofilm process was developed for typical domestic wastewater treatment.
关键词: Full scale Anammox Domestic wastewater Biofilm Candidatus Brocadia
Novel sensing techniques for full-scale testing of civil structures
Kaoshan DAI, Zhenhua HUANG
《结构与土木工程前沿(英文)》 2012年 第6卷 第3期 页码 240-256 doi: 10.1007/s11709-012-0172-8
关键词: sensing technique full-scale testing wireless sensor remote sensing LiDAR laser vibrometer
FULL TIME-SPACE GOVERNANCE STRATEGY AND TECHNOLOGY FOR CROPLAND NON-POINT POLLUTION CONTROL IN CHINA
《农业科学与工程前沿(英文)》 2023年 第10卷 第4期 页码 593-606 doi: 10.15302/J-FASE-2023522
Ensuring food safety while reducing agricultural non-point source pollution is quite challenging, especially in developing and underdeveloped countries. Effective systematic strategies and comprehensive technologies need to be developed for agricultural non-point source pollution control at the watershed scale to improve surface water quality. In this review, a proposal is made for a full time-space governance strategy that prioritizes source management followed by endpoint water pollution control. The 4R chain technology system is specifically reviewed, including source reduction, process retention, nutrient reuse and water restoration. The 4R chain technology system with the full time-space governance strategy was applied at the scale of an administrative village and proved to be a feasible solution for reducing agricultural non-point source pollution in China. In the future, a monitoring system needs to be established to trace N and P transport. Additionally, new smart fertilizer and intelligent equipment need to be developed, and relevant governance standards and supportive policies need to be set to enhance the efficacy of agricultural non-point source pollution control.
关键词: 4R chain technology system agricultural non-point source pollution case study full time-space governance strategy
Xiaohui WANG, Xianghua WEN, Hengjing YAN, Kun DING, Man HU
《环境科学与工程前沿(英文)》 2011年 第5卷 第1期 页码 92-98 doi: 10.1007/s11783-010-0254-6
关键词: ammonia-oxidizing bacteria (AOB) community dynamics terminal restriction fragment length polymorphism (T-RFLP) nitrification performance
《环境科学与工程前沿(英文)》 2023年 第17卷 第1期 doi: 10.1007/s11783-023-1602-7
● Four Ca. Brocadia species were observed during the spontaneously enrichment.
关键词: Anammox Candidatus Brocadia Functional potential Cooccurring mechanisms Swine wastewater treatment facilities
Optimizing the configuration of a clearwell by integrating pilot and full-scale tracer testing
LIU Wenjun, DU Zhipeng, JIN Junwei
《环境科学与工程前沿(英文)》 2007年 第1卷 第3期 页码 270-275 doi: 10.1007/s11783-007-0045-x
《结构与土木工程前沿(英文)》 页码 1033-1046 doi: 10.1007/s11709-023-0973-y
关键词: shield tunnel bearing capacity failure mechanism segment reinforcement
《能源前沿(英文)》 2021年 第15卷 第4期 页码 959-973 doi: 10.1007/s11708-021-0753-0
关键词: molten metal spreading solidification particle method severe accident fuel debris decommissioning
Interference coordination in full-duplex HetNet with large-scale antenna arrays Article
Zhao-yang ZHANG, Wei LYU
《信息与电子工程前沿(英文)》 2017年 第18卷 第6期 页码 830-840 doi: 10.1631/FITEE.1700047
Kang-li ZHANG, Cong ZHANG, Fang-lin GU, Jian WANG
《信息与电子工程前沿(英文)》 2017年 第18卷 第6期 页码 788-795 doi: 10.1631/FITEE.1700018
标题 作者 时间 类型 操作
On the Innovation, Design, Construction, and Experiments of OMEGA-Based SSPS Prototype: The Sun Chasing Project
Baoyan Duan, Yiqun Zhang, Guangda Chen, Ze Zhao, Jianwei Mi, Xun Li, Lin Yang, Xi Li
期刊论文
Exergy-energy analysis of full repowering of a steam power plant
S. NIKBAKHT NASERABAD,K. MOBINI,A. MEHRPANAHI,M. R. ALIGOODARZ
期刊论文
Ultrathin microcrystalline hydrogenated Si/Ge alloyed tandem solar cells towards full solar spectrum
Yu Cao, Xinyun Zhu, Xingyu Tong, Jing Zhou, Jian Ni, Jianjun Zhang, Jinbo Pang
期刊论文
Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment
期刊论文
FULL TIME-SPACE GOVERNANCE STRATEGY AND TECHNOLOGY FOR CROPLAND NON-POINT POLLUTION CONTROL IN CHINA
期刊论文
Community dynamics of ammonia oxidizing bacteria in a full-scale wastewater treatment system with nitrification
Xiaohui WANG, Xianghua WEN, Hengjing YAN, Kun DING, Man HU
期刊论文
Genome-resolved metagenomic analysis reveals different functional potentials of multiple Brocadia species in a full-scaleswine wastewater treatment system
期刊论文
Optimizing the configuration of a clearwell by integrating pilot and full-scale tracer testing
LIU Wenjun, DU Zhipeng, JIN Junwei
期刊论文
Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis
期刊论文
Analysis of molten metal spreading and solidification behaviors utilizing moving particle full-implicit
期刊论文
Interference coordination in full-duplex HetNet with large-scale antenna arrays
Zhao-yang ZHANG, Wei LYU
期刊论文