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Aggregate 2024年第1期5卷 292-298页

作者： Jiasen Zhang Qiang Wei Wei Li Hao Chen Xiangyu Zhu Yongqi Bai Nannan Fei Liang Cao Zujin Zhao Anjun Qin Ben Zhong Tang Ziyi Ge Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboP.R.China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingP.R.China Center for Aggregation-Induced Emission State Key Laboratory of Luminescent Materials and Devices South China University of Technology GuangzhouGuangzhouChina Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhenChina

The dual emission(DE)feature in materials holds great potential to revolutionize the development of one-component system white organic lightemitting diodes(WOLEDs).However,the reported DE materials remain scarce owing to the formidable challenge of breaking Kasha’s rule and managing the intricate energy/charge transfer ***,we have introduced a groundbreaking DE AIEgen,2CzAn-TPE,which possesses a simple structure and undergoes Z-to-E isomerization and exhibits yellow and red fluorescence powders for pre-and post-sublimation,*** relatively lower potential energy,Z-conformation((Z)-1,2-diphenyl-1,2-bis(4-(10-(9-phenyl-9H-carbazol-3-yl)anthracen-9-yl)phenyl)ethene)of 2CzAn-TPE can be readily transformed into E-conformation((E)-1,2-diphenyl-1,2-bis(4-(10-(9-phenyl-9Hcarbazol-3-yl)anthracen-9-yl)phenyl)ethene)via vacuum *** utilization of X-ray diffraction and grazing-incidence-wide-angle X-ray scattering techniques confirms the structural transformation,while the crystallographic analysis reveals the establishment of numerous intermolecular CH⋅⋅⋅πinteractions between the tetraphenylethene(TPE)moiety and both the anthracene and carbazole *** allows a densely packed molecular arrangement,thereby offering propitious conditions for excimer generation in the E-conformation aggregated *** utilizing the sublimated 2CzAn-TPE as an emitter,a nondoped one-component WOLED was prepared,exhibiting an exceptionally high external quantum efficiency(EQE)of 5.0%,which represents one of the highest performances among all *** research introduces a novel,simple,and efficient approach to realize highly efficient one-molecule WOLEDs.

关键词： aggregation-induced emission dual emission isomerization white OLED

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Ultralow detection limit and ultrafast response/recovery of the H_(2)gas sensor based on Pd-doped rGO/ZnO-SnO_(2)from hydrothermal synthesis

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Microsystems & Nanoengineering 2022年第3期8卷 105-116页

作者： Xinxiao Zhang Jianhai Sun Kangsong Tang Hairong Wang Tingting Chen Kaisheng Jiang Tianye Zhou Hao Quan Ruihua Guo State Key Laboratory of Transducer Technology Aerospace Information Research InstituteChinese Academy of Sciences100194 BeijingChina School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of Sciences100049 BeijingChina School of MechanicalEngineering Xi'an Jiaotong University710049 Xi'anShanxiChina Institute ofUrban Safety and Envionmental Science Beijing Academy of Science andTechnology100054 BeijingChina

Hydrogen(H_(2))sensors are of great significance in hydrogen energy development and hydrogen safety ***,achieving fast and effective detection of low concentrations of hydrogen is a key problem to be solved in hydrogen *** this work,we combined the excellent gas sensing properties of tin(IV)oxide(SnO_(2))and zinc oxide(ZnO)with the outstanding electrical properties of reduced graphene oxide(rGO)and prepared palladium(Pd)-doped rGO/ZnO-SnO_(2)nanocomposites by a hydrothermal *** crystal structure,structural morphology,and elemental composition of the material were characterized by FE-SEM,TEM,xRD,XPS,Raman spectroscopy,and N2 *** results showed that the Pd-doped ZnO-SnO_(2)composites were successfully synthesized and uniformly coated on the surface of the *** hydrogen gas sensing performance of the sensor prepared in this work was investigated,and the results showed that,compared with the pure Pd-doped ZnO-SnO_(2)sensor,the Pddoped rGO/ZnO-SnO_(2)sensor modified with 3 wt%rGO had better hydrogen(H_(2))-sensing response of 9.4-100 ppm H_(2)at 380℃.In addition,this sensor had extremely low time parameters(the response time and recovery time for 100 ppm H_(2)at 380℃were 4 s and 8 s,respectively)and an extremely low detection limit(50 ppb).Moreover,the sensor exhibited outstanding repeatability and *** to the analysis of the sensing mechanism of this nanocomposite,the enhanced sensing performance of the Pd-doped rGO/ZnO-SnO_(2)sensor is mainly due to the heterostructure of rGO,Zno,and SnO_(2),the excellent electrical and physical properties of rGO and the synergy between rGO and Pd.

关键词： rGO composites limit

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Integration of transcriptome and metabolome reveals regulatory mechanisms of volatile flavor formation during tomato fruit ripening

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Horticultural Plant Journal 2025年第2期11卷 680-692页

作者： Zhiqiang Liu Jianxin Wu Licai Wang Xiaonan Lu Golam Jalal Ahammed Xiaolan Zhang Xia Cui Haijing Wang State Key Laboratory of Vegetable Biobreeding Sino-Dutch Joint Laboratory of Horticultural GenomicsInstitute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable Ministry of Agriculture and Rural AffairsCollaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang ProvinceCollege of Horticulture ScienceZhejiang A&F UniversityHangzhouZhejiang 311300China Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops Department of Vegetable SciencesChina Agricultural UniversityBeijing 100193China College of Horticulture and Plant Protection Henan University of Science and TechnologyLuoyangHenan 471023China

Tomato is an important economic crop all over the *** flavors in tomato fruit are key factors influencing consumer liking and commercial ***,the regulatory mechanism controlling the volatile flavors of tomatoes is still not ***,we integrated the metabolome and transcriptome of the volatile flavors in tomato fruit to explore the regulatory mechanism of volatile flavor formation,using wild and cultivated tomatoes with significant differences in flavors.A total of 35 volatile flavor compounds were identified,based on the solid phase microextraction-gas chromatography-mass spectrometry(SPME-GC-MS).The content of the volatiles,affecting fruit flavor,significantly increased in the transition from breaker to red ripe fruit ***,the total content of the volatiles in wild tomatoes was much higher than that in the cultivated *** content variations of all volatile flavors were clustered into 10 groups by hierarchical cluster and Pearson coefficient correlation(PCC)*** fruit transcriptome was also patterned into 10 groups,with significant variations both from the mature green to breaker fruit stage and from the breaker to red ripe fruit *** the metabolome and the transcriptome of the same developmental stage of fruits by co-expression analysis,we found that the expression level of 1182 genes was highly correlated with the content of volatile flavor compounds,thereby constructing two regulatory pathways of important volatile *** pathway is tetrahydrothiazolidine N-hydroxylase(SlTNH1)-dependent,which is regulated by two transcription factors(TFs)from the bHLH and AP2/ERF families,controlling the synthesis of 2-isobutylthiazole in amino acid *** other is lipoxygenase(Sl LOX)-dependent,which is regulated by one TF from the HD-Zip family,controlling the synthesis of hexanal and(Z)-2-heptenal in fatty acid ***-luciferase assay confirmed the binding of b HLH and AP2/ERF to their struct

关键词： Tomato Volatile flavor Transcriptome Transcription factor Co-expression

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[Cs_(14)Cl][Tm_(71)Se_(110)]:An unusual salt-inclusion chalcogenide containing different valent Tm centers and ultralow thermal conductivity

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Chinese Journal of Structural Chemistry 2024年第10期43卷 42-48页

作者： Hong Chen Mao-Yin Ran Long-Hua Li Xin-Tao Wu Hua Lin State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350002China University of Chinese Academy of Sciences Beijing100049China School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang212013China

As an emerging class of inorganic hybrid materials,salt-inclusion chalcogenides(SICs)have garnered significant attention in the past decade owing to their distinct host-guest structural characteristics and outstanding perfor-mance in the field of *** this study,a novel quaternary SIC[Cs_(14)Cl][Tm_(71)Se_(110)]has been discovered using an appropriate flux *** structure comprises two distinct parts within the lattice:the host[Tm_(71)Se_(110)]^(13-)framework and the guest[Cs_(14)Cl]^(13+)***,this structure reveals the presence of mixed-valent Tm^(2+)/Tm^(3+)and different types of closed cavities for the first ***,thermal transport performance testing shows that it has ultralow thermal conductivity,ranging from 0.29 to 0.24 W/m·K within the temperature range of 323-673 K,which is one of the lowest reported values among polycrystalline *** research not only advances the coordination chemistry of rare-earth-based compounds but also reaffirms that SIC semiconductors are promising systems for achieving ultralow thermal conductivity.

关键词： Salt-inclusion chalcogenide Rare-earth element Mixed valence state Ultralow thermal conductivity Thermoelectric material

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In situ analysis of surface composition and meteorology at the Zhurong landing site on Mars

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国家科学评论（英文版） 2023年第6期10卷 125-136页

作者： Yu-Yan Sara Zhao Jin Yu Guangfei Wei Lu Pan Xiangfeng Liu Yangting Lin Yang Liu Chen Sun Xiyu Wang Juntao Wang Weijie Xu Yunfei Rao Weiming Xu Tianyang Sun Fengye Chen Beiyi Zhang Honglei Lin Zhenqiang Zhang Sen Hu Xiang-Yu Li Xiao-Wen Yu Shuai-Yi Qu Di-Sheng Zhou Xing Wu Xiaojia Zeng Xiongyao Li Hong Tang Jianzhong Liu Research Center for Planetary Science College of Earth ScienceChengdu University of TechnologyChengdu 610059China Centeer for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China CAS Center for Excellence in Comparative Planetology Hefei 230026China School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Deep Space Exploration Laboratory Hefei 230026China Deep Space Exploration Laboratory Hefei 230026China Laboratory of Seismology and Physics of Earth's Interior School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Space Active Opto-electronics Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Centeer for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China University of Chinese Academy of Sciences Beijing 100049China Research Center for Planetary Science College of Earth ScienceChengdu University of TechnologyChengdu 610059China Centeer for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Centeer for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China CAS Center for Excellence in Comparative Planetology Hefei 230026China

The Zhurong rover of the Tianwen-1 mission landed in southern Utopia Planitia,providing a unique window into the evolutionary history of the Martian *** its first 110 sols,Zhurong investigated and categorized surface targets into igneous rocks,lithified duricrusts,cemented duricrusts,soils and *** lithified duricrusts,analysed by using laser-induced breakdown spectroscopy onboard Zhurong,show elevated water contents and distinct compositions from those of igneous *** cemented duricrusts are likely formed via water vapor-frost cycling at the atmosphere-soil interface,as supported by the local meteorological *** and sands contain elevated magnesium and water,attributed to both hydrated magnesium salts and adsorbed *** compositional and meteorological evidence indicates potential Amazonian brine activities and present-day water vapor cycling at the soil-atmosphere *** for further clues to water-related activities and determining the water source by Zhurong are critical to constrain the volatile evolution history at the landing site.

关键词： Zhurong rover Tianwen-1 mission Utopia Planitia LIBS volatile

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Research on the natural circulation characteristic of deep borehole heat exchanger and the influences on the water circulation resistance

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Building Simulation 2024年第12期17卷 2213-2232页

作者： Jiewen Deng Yanhui Wang Yangyang Su Yuanguo Wang Yin Chen Minghui Ma Chenwei Peng Wanlong Cai Ji Li Qingpeng Wei Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin School of Environmental Science&EngineeringHuazhong University of Science and TechnologyWuhanHubei 430074China Department of Building Science Tsinghua UniversityBeijing 100084China School of Human Settlements and Civil engineering Xi'an Jiaotong UniversityXi'anShaanxi 710049China China Academy of Building Research Bejing 100101China

As deep borehole heat exchangers(DBHEs)extract heat from geothermal energy with depth of 2–3 kilometers,the circulation water pressure drop is larger than that of shallow-depth borehole heat exchangers,influenced by the water flow *** paper conducted field tests and simulation analysis to study the heat transfer performance and water circulation resistance of DBHE in coupled,where the natural circulation characteristic has been discovered and analyzed *** show that the water temperature and density variation along DBHE forms the driving force of natural *** mechanical flow rate of 6.0 kg/s and inlet water temperature of 20.0℃,the natural circulation flow rate reaches about 2.2 kg/s with transient heat extraction power of 78.5 kW,without energy consumption of water *** the larger inlet water temperature,smaller mechanical water flow rate,higher inner tube thermal conductivity coefficient and larger depth of DBHE all contribute to the larger natural circulation water flow *** addition,the natural circulation could effectively decrease the comprehensive water pressure drops of DBHE,which is about 47.3%smaller than the calculated value of traditional *** the natural circulation characteristic has significant influence on the heat transfer performance of DBHE,and also on the energy performance of whole heat pump systems.

关键词： deep borehole heat exchangers water circulation resistance natural circulation field tests simulation analysis

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Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter

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Journal of Oceanology and Limnology 2022年第5期40卷 1881-1888页

作者： Le GAO Hanwei SUN Jifeng QI Qiufu JIANG CAS Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of Sciences and Center for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Beijing Radio Measurement Institute Beijing 100854China Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266237China

To achieve better observation for sea surface,a new generation of wide-swath interferometric altimeter satellites is *** satellite launch,it is particularly important to study the data processing methods and carry out the detailed error analysis of ocean satellites,because it is directly related to the ultimate ability of satellites to capture ocean *** this purpose,ocean eddies are considered a specific case of ocean signals,and it can cause significant changes in sea surface *** is suitable for theoretical simulation of the sea surface and systematic simulation of the *** analyzed the impacts of random error and baseline error on the sea surface and ocean signals and proposed a combined strategy of low-pass filtering,empirical orthogonal function(EOF)decomposition,and linear fitting to remove the *** this strategy,sea surface anomalies caused by errors were considerably improved,and the capability of satellite for capturing ocean information was ***,we found that the baseline error in sea surface height data was likely to cause inaccuracy in eddy boundary detection,as well as false eddy *** abnormalities could be prevented for"clean"sea surface height after the errors removal.

关键词： interferometric altimetry baseline error random error ocean eddy theoretical and systematic simulation error removal strategy

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Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

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Frontiers of Environmental science & Engineering 2022年第4期16卷 15-25页

作者： Liang Cui Ji Li Xiangyun Gao Biao Tian Jiawen Zhang Xiaonan Wang Zhengtao Liu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China Faculty of Land and Resources Engineering Kunming University of Science and TechnologyKunming 650093China

Heavy metals are widely concerning because of their toxicity,persistence,non-degradation and bioaccumulation *** health ambient water quality criteria(AWQC)are specific levels of chemicals that can occur in water without harming human *** present,most countries do not consider the effects of aquatic vegetables in deriving human health ***,the intake of aquatic vegetables(Brasenia schreberi)was added to the derivation of human health AWQC and a health risk assessment for 13 heavy metals in Taihu *** human health AWQC(consumption of water,fish and aquatic vegetables)values of 13 heavy metals ranged from 0.04(Cd)to 710.87μg/L(Sn),and the intake of *** had a very significant effect on the human health AWQC for Cu,with a more than 62-fold *** hazard quotients of As(2.8),Cd(1.6),Cr(1.4)and Cu(4.86)were higher than the safe level(HQ=1),indicating that As,Cd,Cr and Cu in Taihu Lake posed a significant health *** analysis showed that the contribution rate of *** intake to the human health risk from Cu was 91.6%,and all results indicated that the risk of Cu in *** to human health should be of particular *** study adds the consideration of aquatic vegetable consumption to the traditional method of human health AWQC derivation and risk assessments for the first time,and this approach can promote the development of risk assessments and water quality criteria.

关键词： Heavy metals Human health ambient water quality criteria Taihu Lake Health risk assessment Contribution rate

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Outlier-resistant distributed fusion filtering for nonlinear discrete-time singular systems under a dynamic event-triggered scheme

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Frontiers of Information technology & Electronic Engineering 2024年第2期25卷 237-249页

作者： Zhibin HU Jun HU Cai CHEN Hongjian LIU Xiaojian YI Department of Applied Mathematics Harbin University of Science and TechnologyHarbin150080China Heilongjiang Provincial Key Laboratory of Optimization Control and Intelligent Analysis for Complex Systems Harbin University of Science and TechnologyHarbin150080China School of Automation Harbin University of Science and TechnologyHarbin150080China School of Mathematics and Physics Anhui Polytechnic UniversityWuhu241000China School of Mechatronical Engineering Beijing Institute of TechnologyBeijing100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing314003China Tangshan Research Institute Beijing Institute of TechnologyTangshan063099China

This paper investigates the problem of outlier-resistant distributed fusion filtering(DFF)for a class of multi-sensor nonlinear singular systems(MSNSSs)under a dynamic event-triggered scheme(DETS).To relieve the effect of measurement outliers in data transmission,a self-adaptive saturation function is ***,to further reduce the energy consumption of each sensor node and improve the efficiency of resource utilization,a DETS is adopted to regulate the frequency of data *** the addressed MSNSSs,our purpose is to construct the local outlier-resistant filter under the effects of the measurement outliers and the DETS;the local upper bound(UB)on the filtering error covariance(FEC)is derived by solving the difference equations and minimized by designing proper filter ***,according to the local filters and their UBs,a DFF algorithm is presented in terms of the inverse covariance intersection fusion *** such,the proposed DFF algorithm has the advantages of reducing the frequency of data transmission and the impact of measurement outliers,thereby improving the estimation ***,the uniform boundedness of the filtering error is discussed and a corresponding sufficient condition is ***,the validity of the developed algorithm is checked using a simulation example.

关键词： Distributed fusion filtering Multi-sensor nonlinear singular systems Dynamic event-triggered scheme Outlier-resistant filter Uniform boundedness

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Perfluoroalkyl acids(PFAAs) in urban surface water of Shijiazhuang, China: Occurrence, distribution,sources and ecological risks

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Journal of Environmental sciences 2023年第3期125卷 185-193页

作者： Xiaotong Li Yuan Wang Chengjing Qian Zhixin Zheng Yali Shi Jiansheng Cui Yaqi Cai College of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental ScienceUniversity of Chinese Academy of SciencesBeijing 100085China Nutrition&Health Research Institute COFCO CorporationBeijing 102209China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310024China

It is extremely important to analyze the contaminative behaviors of Perfluoroalkyl acids(PFAAs) due to their serious threats to urban environments which are closely related to humans. Current study aimed to explore the distribution, source apportionment and ecological risk assessment of PFAAs in surface water from Shijiazhuang, China. The concentrations of ΣPFAAs ranged from 19.5 to 125.9 ng/L in the investigation area. Perfluorobutanesulfonic acid(PFBS) and perfluoropentanoic acid(PFPeA) were the predominant contaminants(mean value: 14.3 ng/L and 16.6 ng/L, respectively). The distribution of PFAAs according to geospatial analysis and hierarchical clustering analysis(HCA) showed that higher levels of ΣPFAAs were detected in the southern surface water of Shijiazhuang and there was a stepwise decrease from the wet season to the dry season. Furthermore, based on source apportionment,the dominant potential sources were found to be wastewater treatment plant(WWTP) effluents and industrial discharge. The risk quotients(RQs) revealed low ecological risks of all PFAAs for aquatic organisms in Shijiazhuang surface water. Collectively, this study provided basic data for regulatory strategies for controlling PFAA pollutions in urban surface water.

关键词： Perfluoroalkyl acids Distribution Source apportionment Risk assessment Urban surface water

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