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Overview of the key technologies for high-resolution satellite mapping

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International Journal of Digital Earth 2012年第3期5卷 228-240页

作者： Xinming Tang junfeng xie Satellite Surveying and Mapping Application Center State Bureau of Surveying and MappingBeijingPR China

As the important infrastructures for land mapping and resource monitoring,highresolution remote sensing satellites(HRSS)are urgently demanded for the development of *** this article,the key technologies of the main HRSS are summarized,and these technologies include sensor design,attitude and orbit determination,geometric calibration,imaging model construction,and block adjustment,etc.,which involve the mapping accuracy of ***,the system design of the ZY-3 Satellite(China’s first civil stereoscopic surveying and mapping satellite,to be launched in 2012)is introduced,which mainly include satellite technical specifications and strategies design based on these key technologies research.

关键词： high-resolution remote sensing satellite satellite technical specifications satellite surveying and mapping ZY-3 Satellite

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智能传输系统在渡槽连续刚构张拉中的应用

四川水力发电 2024年第2期43卷 72-75页

作者：谢军锋文能中国电建集团成都勘测设计研究院有限公司四川成都610072 四川省亭子口灌区建设开发有限公司四川南充637000

探讨了智能传输系统在亭子口水利工程渡槽连续刚构张拉应用中具有的潜力和优势。阐述了渡槽连续刚构的背景以及传统渡槽连续刚构张拉方法存在的操作效率低、安全风险高以及监测数据不稳定的缺陷,详细介绍了智能传输系统的概念、工作原... 详细信息

探讨了智能传输系统在亭子口水利工程渡槽连续刚构张拉应用中具有的潜力和优势。阐述了渡槽连续刚构的背景以及传统渡槽连续刚构张拉方法存在的操作效率低、安全风险高以及监测数据不稳定的缺陷,详细介绍了智能传输系统的概念、工作原理和特点,强调了其在渡槽连续刚构中的应用;探讨了智能传输系统中采用的关键技术,包括传感器技术、控制算法和通信技术以及如何优化其系统性能,分析了其与传统方法相比具有的优势,包括实时监测、远程控制和自动化操作;最后进行了性能评估,强调了智能传输系统在提高工程效率、减少人力成本和提高施工安全性方面具有的潜力;总结了所取得的主要研究成果以及智能传输系统在渡槽连续刚构领域应用的前景。

关键词：智能传输系统渡槽连续刚构张拉传感技术

不同剂量糖皮质激素联合阿奇霉素治疗小儿重症肺炎支原体肺炎的效果

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中国医药指南 2024年第23期22卷 10-13页

作者：谢俊锋卢成瑜中山大学附属第七医院儿科深圳518000 广州医科大学附属第一医院儿科广州510120

目的探讨不同剂量糖皮质激素联合阿奇霉素治疗小儿重症肺炎支原体肺炎(SMPP)的效果。方法回顾性分析2021年1月至2023年12月在我院儿科治疗的SMPP病例,这些患儿均使用糖皮质激素联合阿奇霉素治疗。根据糖皮质激素使用剂量不同分为3组,每... 详细信息

目的探讨不同剂量糖皮质激素联合阿奇霉素治疗小儿重症肺炎支原体肺炎(SMPP)的效果。方法回顾性分析2021年1月至2023年12月在我院儿科治疗的SMPP病例,这些患儿均使用糖皮质激素联合阿奇霉素治疗。根据糖皮质激素使用剂量不同分为3组,每组22例患儿(共66例):A组使用低剂量1 mg/(kg·d)糖皮质激素治疗,B组使用中剂量2 mg/(kg·d)糖皮质激素治疗,C组使用高剂量≥3 mg/(kg·d)糖皮质激素治疗,疗程为5~7 d。对比3组的临床疗效、症状消失时间、住院时间、炎性因子变化的差异。结果C组治疗有效率为95.45%,高于A组的68.18%及B组的72.73%(P0.05)。结论高剂量≥3 mg/(kg·d)糖皮质激素联合阿奇霉素治疗小儿SMPP的效果更好,能加快症状缓解速度,减轻炎性反应。

关键词：小儿重症肺炎支原体肺炎不同剂量糖皮质激素阿奇霉素炎症

Rapid and Scalable Synthesis of Prussian Blue Analogue Nanocubes for Electrocatalytic Water Oxidation

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Chinese Journal of Chemistry 2021年第9期39卷 2347-2353页

作者： Wenbin Sun Zimeng Wei Jindi Qi Luyao Kang Jiechen Li junfeng xie Bo Tang Yi xie College of Chemistry Chemical Engineering and Materials ScienceCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongKey Laboratory of Molecular and Nano ProbesMinistry of EducationInstitute of Molecular and Nano ScienceShandong Normal UniversityJinanShandong 250014China Hefei National Laboratory for Physical Sciences at the Microscale CAS Center for Excellent in Nanoscale University of Science and Technology of China.HefeiAnhui 230026China

Design and fabrication of earth-abundant electrocatalysts for oxygen evolution reaction(OER)is essential in improving the overall ef-ficiency of water *** this work,we proposed a rapid and scalable synthesis route for fabricating Prussian blue analogue(PBA)nano cubes with tun able compositi ons and uniform particle *** the structural ben efits of abu ndant surface sites,facile charge transfer behavior and favorable Co^(2+)-to-Co^(3+)pre-oxidation reaction,fast generation and accumulation of the catalytically active Co3+sites can be achieved for the CoCo PBA nano cubes,leadi ng to remarkable OER activity with simulta neously achieved low overpotential,large anodic current density,small Tafel slope as well as outstanding intrinsic *** note,by performing Iong-term OER operati on,the CoCo PBA nano cubes exhibit a remarkable 5.5-folds performs nee enhan ceme nt,and obvious surface rec on struc-tion and the accumulation of high-valence Co species can be identified,proving the crucial role of pre-oxidation process in boosting the OER *** work proposed a un iversal approach for the rapid,scalable and con trollable fabricati on of the PBA-based materials,and the elucidation of the pre-oxidation process in facilitating the OER catalysis may provide useful guidanee for designing and optimizing advanced catalysts for energy-related electro-oxidation reactions in the future.

关键词： Electrochemistry Energy conversion Water splitting Prussian blue analogue Synthesis design

Defect-rich MoS2 nanowall catalyst for efficient hydrogen evolution reaction

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Nano Research 2017年第4期10卷 1178-1188页

作者： junfeng xie Haichao Qu Jianping Xin Xinxia Zhang Guanwei Cui Xiaodong Zhang Jian Bao Bo Tang Yi xie College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong Key Laboratory of Molecular and Nano Probes Ministry of Education Institute of Molecular and Nano Science Shandong Normal University Jinan 250014 China Hefei National Laboratory for Physical Sciences at the Microscale Department of Chemistry University of Science and Technology ot China Hefei 230026 China

Designing efficient electrocatalysts for the hydrogen evolution reaction （HER） has attracted substantial attention owing to the urgent demand for clean energy to face the energy crisis and subsequent environmental issues in the near future. Among the large variety of HER catalysts, molybdenum disulfide （MoS2） has been regarded as the most famous catalyst owing to its abundance, low price, high efficiency, and definite catalytic mechanism. In this study, defect-engineered MoS2 nanowall （NW） catalysts with controllable thickness were fabricated and exhibited a significantly enhanced HER performance. Benefiting from the highly exposed active edge sites and the rough surface accompanied by the robust NW structure, the defect-rich MoS2 NW catalyst with an optimized thickness showed an ultralow onset overpotential of 85 mV, a high current density of 310.6 mA·cm^-2 at η = 300 mV, and a low potential of 95 mV to drive a 10 mA·cm^-2 cathodic current. Additionally, excellent electrochemical stability was realized, making this freestanding NW catalyst a promising candidate for practical water splitting and hydrogen production.

关键词： molybdenum disulfide (MoS2) nanowall water splitting electrocatalysis hydrogen evolution reaction

Lanthanum-dopedα-Ni(OH)_(2)1D-2D-3D hierarchical nanostructures for robust bifunctional electro-oxidation

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Particuology 2021年第4期19卷 104-111页

作者： Zimeng Wei Wenbin Sun Shanshan Liu Jindi Qi Luyao Kang jiechen Li Shanshan Lou junfeng xie Bo Tanga Yi xie College of Chemistry Chemical Engineeringand Materials ScienceKey Laboratory of Molecular and Nano Probes(Ministry of Education)Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongInstitute of Molecular and Nano ScienceShandong Normal UniversityJinan 250014PR China College of Chemical Engineering and Safety Binzhou UniversityBinzhou 256603PR China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026PR China

The development of advanced electrocatalysts for electro-oxidation reactions has attracted much attention because of the critical role of such electrocatalysts in improving the overall efficiency of coupled hydrogen *** have developed an efficient lanthanum-dopedα-Ni(OH)_(2) bifunctional catalyst with a 1D-2D-3D hierarchical *** shows superior activity and stability in the anodic oxygen evolution reaction(OER)and urea oxidation reaction(UOR).Enrichment of the edge sites and conducting La doping inα-Ni(OH)_(2) phase enable formation and stabilization of abundant local Ni^(3+)*** guarantees ultralow onset potentials in electro-oxidation *** 1D-2D-3D hierarchical nanostructure significantly boosts the in situ generation of high-valence active species,which results in efficient and stable OER and UOR performances,and the synergistic merit of doping-induced facile reaction *** of the structural benefits of a large surface area,charge-transfer promotion,good structural stability,and bifunctionality,a 1%La-dopedα-Ni(OH)_(2) hierarchical nanostructure gives superior OER and UOR performances with low overpotentials,large catalytic current densities,and excellent operational *** is therefore a promising catalyst for use in simultaneous alkaline wastewater treatment and hydrogen production.

关键词： Electro-oxidation Urea oxidation reaction(UOR) Oxygen evolution reaction(OER) Doping Hierarchical nanostructure

On-orbit geometric calibration of satellite laser altimeters using infrared detectors and corner-cube retroreflectors

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International Journal of Digital Earth 2023年第1期16卷 2067-2088页

作者： junfeng xie Ren Liu Xiaomeng Yanga Fan Mo Fangxu Zhang Lirong Liu Land Satellite Remote Sensing Application Center Ministry of Natural ResourcesBeijingPeople’s Republic of China School of Earth Sciences and Engineering Hohai UniversityNanjingPeople’s Republic of China Faculty of Geography Yunnan Normal UniversityKunmingPeople’s Republic of China

After being launched into orbit,the geometric calibration of a satellite laser altimeter will reduce errors in laser pointing and ranging caused by satellite vibrations during launch,environmental changes,and thermal effects during long-term operation,which guarantees the accuracy of measurement *** this study,a satellite laser geometric calibration method combining infrared detectors and corner-cube retroreflectors(CCRs)is ***,a CCR-based laser ranging error calibration method was established,and then a laser pointing error calibration model was derived based on a single infrared detector *** GaoFen-7(GF-7)satellite laser beam 2 as the experimental object,laser geometric calibration was realized using an infrared detector and CCR-measured ***,the accuracy of the proposed method was compared with that of other calibration methods,the CMLID and the *** results show that the accuracy of the proposed calibration method is equivalent to that of the CMLID and higher than that of the *** them,the accuracy of the laser pointing after calibration using the proposed method is better than 0.8 arcsec,and the elevation accuracy of the laser on flat,sloping,and mountainous terrains is better than 0.11 m,0.30 m,and 1.80 m,respectively.

关键词： Satellite laser calibration infrared detector corner-cube retroreflector(CCR) GaoFen-7(GF-7)satellite accuracy verification

Novel(Ni, Fe)S2/(Ni, Fe)3S4 solid solution hybrid: an efficient electrocatalyst with robust oxygen-evolving performance

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Science China Chemistry 2020年第8期63卷 1030-1039页

作者： Pin Hao Ying Xin Jian Tian Liyi Li junfeng xie Fengcai Lei Lili Tong Hong Liu Bo Tang College of Chemistry Chemical Engineering and Materials ScienceInstitute of Materials and Clean EnergyCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongKey Laboratory of Molecular and Nano ProbesMinistry of EducationShandong Provincial Key Laboratory of Clean Production of Fine ChemicalsShandong Normal UniversityJinan 250014China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China Intel Corporation HillsboroOR 97124USA

Fabrication of high-activity electrocatalysts with operational stability is desperately needed to achieve efficient energy ***,for the first time,we highlight a novel electrocatalyst based on binary nickel iron sulfide solid solution hybrids on carbon cloth for oxygen evolution *** from the synergistic effect of varied phases and the interfacial connection between(Ni,Fe)S2 and(Ni,Fe)3S4 to accelerate the charge transport,the Ni incorporation to optimize the electronic structure of the hybrids and the downshift of the d-band center to facilitate the desorption of oxygen intermediates,the partial charge-transfer between Fe and Ni to boost the generation of catalytically active Ni3+as well as the unique nanosphere structure to offer enough buffer area for the volume changes during constant redox reactions,the obtained binary nickel iron sulfide hybrids((Ni,Fe)S2/(Ni,Fe)3S4)display high catalytic reactivity with a low overpotential of 210 mV to reach the current density of 10 mA cm-2,and excellent stability with negligible activity deterioration,making the hybrid a promising candidate for electrocatalytic alkaline water oxidation.

关键词： binary nickel iron sulfide hybrids solid solution electrocatalysis oxygen evolution reaction

Removal of toxic metal ions using chitosan coated carbon nanotube composites for supercapacitors

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Science China Chemistry 2018年第7期61卷 797-805页

作者： Pin Hao Xiaoye Ma junfeng xie Fengcai Lei Liyi Li Wenqian Zhu Xin Cheng Guanwei Cui Bo Tang College of Chemistry Chemical Engineering and Materials ScienceInstitute of Materials and Clean EnergyCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongKey Laboratory of Molecular and Nano ProbesMinistry of EducationShandong Provincial Key Laboratory of Clean Production of Fine ChemicalsShandong Normal UniversityJinan 250014China Intel Corporation Hillsboro OR 97124USA

Environmental pollution and energy crisis are two major global challenges to human *** energy from wastewater is considered to be one of the effective approaches to address these two issues *** the main pollutants in wastewater,toxic heavy metal ions are the potential candidates for energy storage devices with pseudocapacitive *** this study,toxic metal ions of Cr(VI)and Cu(II)are removed efficiently by chitosan coated oxygen-containing functional carbon nanotubes,and the corresponding equilibrium adsorption capacity is 142.1 and 123.7 mg g^(-1).Followed by carbonization of metal ions-adsorbed adsorbents,Cu-and Cr N-loaded carbon composites can be *** measurements show that the supercapacitor electrodes based on Cu-and Cr N-loaded carbon composites have specific capacitance of 144.9 and 114.9 F g^(-1)at2 m V s^(-1),with superior electrochemical properties to pure chitosan coated carbon nanotubes after *** work demonstrates a new strategy for the resource-utilization of other heavy metal ions for energy devices,and also provides a new way to turn environmental pollutants into clean energy.

关键词： heavy metal ions adsorption chitosan coated carbon nanotube supercapacitor