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High-precision temperature retrieval algorithm and verification for mesospheric airglow spectrum photometer

science China Earth sciences 2024年第5期67卷 1639-1651页

作者： Shuqi NIU Haiyang GAO Zhaoai YAN Ke REN Leilei KOU Baichuan JIANG Lingbin BU Key Open Laboratory of Aerosol and Cloud Precipitation of China Meteorological Administration Nanjing 210044China School of Atmospheric Physics Nanjing University of Information Science and TechnologyNanjing 210044China National Space Science Center Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China

Photometric technology,characterized by its compact structure and relatively high stability,finds wide application in measuring airglow *** instrumentation is anticipated to assume a pivotal role as the primary equipment for extensive network observations of middle and upper atmospheric temperatures in China,thereby providing crucial support for space environmental monitoring and atmospheric dynamic ***,susceptibility to various factors such as instrument inconsistency,variability in observation conditions,and alterations in the background atmospheric environment across different stations poses a challenge,potentially resulting in data inconsistencies in network *** response to these challenges,we propose a multiple-parameter iterative inversion(MPII)algorithm for temperature retrieval based on a mesospheric airglow spectrum photometer(MASP)developed by our research *** algorithm accurately identifies the center of the image circle,corrects image distortion,and thereby obtains an accurate synthetic spectrum reflective of actual *** encompasses five adjustable parameters:sky background light,atmospheric temperature,filter temperature,optical system focal length,and degree of synthetic spectrum *** to traditional methods,significant enhancements in the accuracy of the inverted temperature are *** validate the effectiveness of the MPII algorithm,we conducted combined active and passive remote sensing synchronous measurements using MASP in conjunction with a sodium fluorescence Doppler lidar developed by the National Space science *** utilizing the lidar temperature as a reference,atmospheric background radiation is mitigated from the MASP data,and the temperature is inverted using the MPII *** analysis with the traditional method reveals that temperatures calculated by the MPII algorithm exhibit better consistency than those observed by the lidar.

关键词： Temperature inversion Airglow spectrum photometer Rotational spectral lines Sodium fluorescence Doppler lidar Comparative observations

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Molecular beam epitaxy growth of topological insulator Bi₄Br₄ on silicon for the infrared applications

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Quantum Frontiers 2024年第1期3卷 1-11页

作者： Xu, Shiqi Meng, Xiangkai Zhang, Xu Zhang, Chunpan Bai, Jiangyue Jiang, Yujiu Li, Xiuxia Wang, Chong Mao, Pengcheng Han, Junfeng Yao, Yugui Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 China International Center for Quantum Materials Beijing Institute of Technology Zhuhai 519000 China Analysis & amp Testing Center Beijing Institute of Technology Beijing 100081 China

Bi4Br4 is a material rich in intriguing topological properties. Monolayer Bi4Br4 film exhibits helical edge states characteristic of a quantum spin Hall insulator, while bulk Bi4Br4 represents a higher-order topologic... 详细信息

Bi₄Br₄ is a material rich in intriguing topological properties. Monolayer Bi₄Br₄ film exhibits helical edge states characteristic of a quantum spin Hall insulator, while bulk Bi₄Br₄ represents a higher-order topological insulator with hinge states. However, direct exfoliation from single crystal can only obtain thin nanowires due to the weak van der Waals forces between Bi₄Br₄ chains, which limits its optical analysis and application, while the growth of Bi₄Br₄ thin films is also full of challenges due to the extremely narrow growth temperature range and the accurate control of the BiBr₃ flux. Here, we reported the controlled growth of α-Bi₄Br₄ thin films on intrinsic silicon substrates using molecular beam epitaxy. The growth temperature, BiBr₃ flux, and the flux ratio of Bi and BiBr₃ were accurately controlled. Then, the morphology, composition, and bonding of the prepared films were investigated using atomic force microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy. The growth of large, uniform thin films provides an ideal material platform for studying the physical properties of Bi₄Br₄. Additionally, we utilized Fourier-transform infrared spectroscopy to explore the film’s infrared characteristics, revealing strong absorption in the low frequency range due to the high proportion of one-dimensional topological edge states and laying the groundwork for further exploration of its potential applications in the optoelectronic field. © The Author(s) 2024.

关键词： Fourier-transform infrared spectroscopy Intrinsic silicon Molecular beam epitaxy Topological insulator α-Bi4Br4 film

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Allotetraploidization event of Coptis chinensis shared by all Ranunculales

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Horticultural Plant Journal 2024年第1期10卷 288-303页

作者： Yan Zhang Weina Ge Jia Teng Yanmei Yang Jianyu Wang Zijian Yu Jiaqi Wang Qimeng Xiao Junxin Zhao Shaoqi Shen Yishan Feng Shoutong Bao Yu Li Yuxian Li Tianyu Lei Yuxin Pan Lan Zhang Jinpeng Wang Department of Bioinformatics School of Life SciencesNorth China University of Science and TechnologyTangshanHebei 063000China School of Life Sciences North China University of Science and TechnologyTangshanHebei 063000China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Coptis chinensis Franch.,also named Chinese goldthread is a member of Ranunculaceae in the order Ranunculales and represents an important lineage of early eudicots with traditional medicinal *** our study,by using syntenic analysis combined with phylogenomic analysis of *** and four other representative genomes from basal and core eudicots,we confirmed that the WGD event in *** was shared by Aquilegia coerulea and Papaver somniferum *** quickly occurred after Ranunculales diverged from other eudicots,likely a Ranunculales common tetraploidization(RCT).The synonymous nucleotide substitutions at synonymous sites distribution of syntenic blocks across these genomes showed that the evolutionary rate of the *** genome is faster than that of the *** genome by approximately 13.7%,possibly due to Papaveraceaes having an additional special tetraploidization event(PST).After Ks correction,the RCT dated to 115—130 million years ago(MYA),which was close to the divergence of Ranunculaceaes and Papaveraceaes approximately115.45—130.51 ***,we identified homologous genes related to polyploidization and speciation and constructed multiple sequence alignments with different reference ***,the event-related subgenomes in the basal genomes all showed genomic fractionation bias,suggesting a likely allopolyploid nature of the RCT,PST and T-Alpha and T-Beta events in Tetracentron *** addition,we detected that the sixteen P450 subfamilies were markedly expanded in the genomes of Ranunculales,and most of them were related to the RCT and PST *** constructed a new platform for Early Eudicot Comparative Genomic Research(http://***/***)to store more *** summary,our findings support the WGD of *** shared by Ranunculales,which is likely an allotetraploidization *** present effort offered new insights into the evolution of key polyploidization events and the genes related to second

关键词： Coptis chinensis Ranunculales Polyploidization Genomic fractionation P450 genes

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Distance-basedα-amylase biosensor fabricated with amylopectin-coated mesoporous membrane

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Chinese Chemical Letters 2024年第1期35卷 446-450页

作者： Binglu Zhao Mashooq Khan Yulin Liu Wenjun Tai Chongyang Mu Wenli Wu Mei Zhao Yaohong Ma Li Yu Jin-Ming Lin Qiongzheng Hu Qilu University of Technology(Shandong Academy of Sciences) Shandong Analysis and Test CenterJi’nan 250014China School of Pharmaceutical Sciences Qilu University of Technology(Shandong Academy of Sciences)Ji’nan 250014China Key Laboratory of Colloid and Interface Chemistry Shandong UniversityMinistry of EducationJi’nan 250100China Key Laboratory for Biosensors of Shandong Province Biology InstituteQilu University of Technology(Shandong Academy of Sciences)Ji’nan 250353China Beijing Key Laboratory of Microanalytical Methods and Instrumentation MOE Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical BiologyDepartment of ChemistryTsinghua UniversityBeijing 100084China

Paper-based biosensors are widely employed in point-of-care testing(POCT)due to their convenience,portability,low cost,and ease of *** study reports an integrated distance-based paper biosensor fabricated with a mesoporous membrane coated with stimuli-responsive *** detection ofα-amylase(AMY)using amylopectin-coated mesoporous membrane is demonstrated as an *** introducing the AMY solution,it is observed that the aqueous solution flows along the paper strip due to AMY-catalyzed hydrolysis of *** flow distance is proportional to the concentration of AMY with a detection limit as low as 4 mU/*** addition,the detection of AMY is demonstrated in human ***,the inhibitory effect of acarbose on AMY is *** reagent-free and disposable biosensor allows single-step rapid detection of the *** approach is very promising for the development of user-friendly,equipment-free,and cost-effective biosensors with remarkable sensitivity and excellent selectivity for disease diagnosis and hypoglycemic drug screening.

关键词： Paper biosensor α-Amylase Stimuli-responsive polymer Mesoporous membrane Distance Point-of-care testing

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Can Digital Intelligence and Cyber-Physical-Social Systems Achieve Global Food Security and Sustainability?

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IEEE/CAA Journal of Automatica Sinica 2023年第11期10卷 2070-2080页

作者： Yanfen Wang Mengzhen Kang Yali Liu Juanjuan Li Kai Xue Xiujuan Wang Jianqing Du Yonglin Tian Qinghua Ni Fei-Yue Wang College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049 Beijing Yanshan Earth Critical Zone National Research Station University of Chinese Academy of SciencesBeijing 101408 State Key Laboratory of Tibetan Plateau Earth System Environment and ResourcesInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of Sciences(CASIA)Beijing 100190 School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China School of Grassland Science Beijing Forestry UniversityBeijing 100083China State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China State Key Laboratory of Plateau Ecology and Agriculture Qinghai UniversityXining 810016 Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau BiologyChinese Academy of SciencesXining 810001 Binzhou Institute of Technology Weiqiao-UCAS Science and Technology ParkBinzhou 256606China Beijing Yanshan Earth Critical Zone National Research Station University of Chinese Academy of SciencesBeijing 101408China Department of Engineering Science Faculty of Innovation EngineeringMacao University of Science and TechnologyMacao 999078 State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of Sciences(CASIA)Beijing 100190China Faculty of Innovation Engineering Macao University of Science and TechnologyMacao 999078 Beijing Engineering Research Center of Intelligent Systems and Technology Chinese Academy of SciencesBeijing 100098 State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190China IEEE

Plants sequester carbon through photosynthesis and provide primary productivity for the ecosystem. However, they also simultaneously consume water through transpiration, leading to a carbon-water balance relationship. Agricultural production can be regarded as a form of carbon sequestration *** the perspective of the natural-social-economic complex ecosystem, excessive water usage in food production will aggravate regional water pressure for both domestic and industrial purposes. Hence, achieving a harmonious equilibrium between carbon and water resources during the food production process is a key scientific challenge for ensuring food security and sustainability. Digital intelligence(DI) and cyber-physical-social systems(CPSS) are emerging as the new research paradigms that are causing a substantial shift in the conventional thinking and methodologies across various scientific fields, including ecological science and sustainability studies. This paper outlines our recent efforts in using advanced technologies such as big data, artificial intelligence(AI), digital twins, metaverses, and parallel intelligence to model, analyze, and manage the intricate dynamics and equilibrium among plants, carbon, and water in arid and semiarid ecosystems. It introduces the concept of the carbon-water balance and explores its management at three levels: the individual plant level, the community level, and the natural-social-economic complex ecosystem level. Additionally, we elucidate the significance of agricultural foundation models as fundamental technologies within this context. A case analysis of water usage shows that, given the limited availability of water resources in the context of the carbon-water balance, regional collaboration and optimized allocation have the potential to enhance the utilization efficiency of water resources in the river basin. A suggested approach is to consider the river basin as a unified entity and coordinate the relationship between the

关键词： Carbon-water balance decision-support digital intelligence(DI) foundation models planning

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High biomass yields of Chlorella protinosa with efficient nitrogen removal from secondary effluent in a membrane photobioreactor

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Journal of Environmental sciences 2024年第12期146卷 272-282页

作者： Min Yang Zhen Liu Aijie Wang Ingmar Nopens Hairong Hu Hong Chen School of Civil and Environmental Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province Changsha 410114China BIOMATH Department of Data Analysis and Mathematical ModellingGhent UniversityGent B 9000Belgium Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Materials Science and Engineering Hunan University of Science and TechnologyXiangtan 411201China

Further treatment of secondary effluents before their discharge into the receiving water bodies could alleviate water *** this study,the Chlorella proteinosa was cultured in a membrane photobioreactor to further remove nitrogen from the secondary *** effect of hydraulic retention time(HRT)on microalgae biomass yields and nutrient removal was *** results showed that soluble algal products concentration reduced in the suspension at low HRT,thereby alleviating microalgal growth *** addition,the lower HRT reduced the nitrogen limitation for Chlorella proteinosa’s growth through the phase-out of nitrogen-related functional *** a result,the productivity for Chlorella proteinosa increased from 6.12 mg/L/day at an HRT of 24 hr to 20.18 mg/L/day at an HRT of 8 *** highest removal rates of 19.7 mg/L/day,23.8 mg/L/day,and 105.4 mg/L/day were achieved at an HRT of 8 hr for total nitrogen(TN),ammonia,and chemical oxygen demand(COD),***,in terms of removal rate,TN and COD were the largest when HRT is 24 hr,which were 74.5%and 82.6%*** maximum removal rate of ammonia nitrogen was 99.2%when HRT was 8 hr.

关键词： Chlorella MPBR Fouling HRT SAP Nutrient

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Comprehensive metabolic profiling of dioxin-like compounds exposure in laying hens:Implications for toxicity assessment

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Journal of Environmental sciences 2025年第2期148卷 107-115页

作者： Xiaoxu Hu Tong Xu Yangsheng Chen Qian Zhang Lijuan Tang Liping Zheng Chu Wang Pu Wang Shujun Dong Ruiguo Wang Su Zhang Qinghua Zhang Heidi Qunhui Xie Li Xu Bin Zhao State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Department of Cardiology Beijing HospitalNational Center of GerontologyBeijing 100730China School of Environment Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Hubei Key Laboratory of Industrial Fume and Dust Pollution Control School of Environment and HealthJianghan UniversityWuhan 430056China Institute of Quality Standards and Testing Technology for Agro-Products Chinese Academy of Agricultural SciencesBeijing 100081China

The evaluation of toxicity related to polychlorinated dibenzo-p-dioxins and furans(PCDD/Fs)and dioxin-like polychlorinated biphenyls(DL-PCBs)is crucial for a comprehensive risk assessment in real-world exposure *** study employed a controlled feeding experiment to investigate the metabolic effects of dioxin-like compounds(DLCs)on laying hens via feed *** enriched with two concentrations(1.17 and 5.13 pg toxic equivalents(TEQ)/g dry weight(dw))were administered over 14 days,followed by 28 days of clean *** analyses of blood samples revealed significant metabolic variations between PCDD/Fs and DL-PCBs exposed groups and controls,reflecting the induced metabolic *** changes were observed in sphingosine,palmitoleic acid,linoleate,linolenic acid,taurocholic acid,indole acrylic acid,and dibutyl phthalate levels,implying possible connections between PCDD/Fs and DL-PCBs toxic effects and energy-neuronal imbalances,along with lipid accumulation and anomalous amino acid metabolism,impacting taurine ***,we identified three differential endogenous metabolites—L-tryptophan,indole-3-acetaldehyde,and indole acrylic acid—as potential ligands for the aryl hydrocarbon receptor(AhR),suggesting their role inmediating PCDD/Fs and DL-PCBs *** comprehensive investigation provides novel insights into the metabolic alterations induced by PCDD/Fs and DL-PCBs in laying hens,thereby enhancing our ability to assess risks associated with their exposure in human populations.

关键词： Polychlorinated dibenzo-p-dioxins and furans Dioxin-like polychlorinated biphenyls Laying hens Metabolomic

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Risk assessment of Bacillus cereus in lettuce grown in open-feld and greenhouse farming systems in China:A comparative study

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Food Quality and Safety 2024年第2期8卷 268-277页

作者： Yang Qu ShenghaoYu Haotian Gu WenWang WenboWang Zhaoying He Hong Shan Min Gao Xin Zhao ChaoWei TingtingTao Guanghua Zhao Changyan Zhou Yujuan Suo Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs Institute for Agro-Food Standards and Testing TechnologyShanghai Academy of Agricultural SciencesShanghaiChina Information Application Research Center of Shanghai Municipal Administration for Market Regulation ShanghaiChina Eco-environmental Protection Research Institute Shanghai Academy of Agricultural SciencesShanghaiChina MOA Laboratory of Quality&Safety Risk Assessment for Agro-products(Hangzhou) Institute of Agro-Product Safety and NutritionZhejiang Academy of Agricultural SciencesHangzhouChina Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs Institute of Agricultural Standards and Testing Technology for Agri-ProductsShandong Academy of Agricultural SciencesJinanChina Institute of Quality Standard and Testing Technology Beijing Academy of Agriculture and Forestry SciencesBeijingChina Quality and Safety Institute of Agricultural Products Heilongjiang Academy of Agricultural SciencesHarbinChina Institute of Food Science and Technology Chinese Academy of Agricultural SciencesBeijingChina Institute of Germplasm Resources and Biotechnology Tianjin Academy of Agricultural SciencesTianjinChina Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs Institute of Quality Standard and Testing Technology for Agro-Products of Sichuan Academy of Agricultural SciencesChengduChina Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality Institute of Food Safety and NutritionJiangsu Academy of Agricultural SciencesNanjingChina Research Institute of Agricultural Quality Standards and Testing Techniques Henan Academy and Agricultural SciencesZhengzhouChina

Objectives:Bacillus cereus isolates from vegetables can cause diarrheal syndrome food ***,the most highly consumed readyto-eat vegetable,poses a signifcant risk of *** ***,*** monitoring and evaluation during cultivation are essential for preventing foodborne illnesses caused by this food-pathogen ***,the impact of different cultivation practices on *** contamination in lettuce currently remains ***,a validity indicator for the experimental models cannot be effectively validated under feld *** and Methods:Herein,we assessed the risk of *** exposure using lettuce grown under two different cultivation farming systems in China(open-feld versus greenhouse)using a quantitative microbial risk assessment ***’s mean comparison method and kernel density estimation frequency distribution statistics were used for model validation using environmental samples and ***:The mean concentration of *** in open-feld-grown lettuce was signifcantly higher than that in greenhouse-grown lettuce(P<0.05).No signifcant differences were observed between measured,formula-calculated,and risk assessment values in environmental samples or lettuce(P>0.05),verifying the accuracy of the risk ***:Soil solarization,complete manure treatment,usage of mulch flms,and irrigation water quality should be considered in agricultural practices to control *** concentrations in ***,we found that *** was more abundant in open-feld-grown lettuce,and we provide a risk evaluation framework that can guide farmers and policy-makers to control *** contamination in farm-to-fork lettuce chains in China.

关键词： Diarrheal syndrome food poisoning ready-to-eat vegetable greenhouse microbial risk assessment

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RGB-guided hyperspectral image super-resolution with deep progressive learning

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CAAI Transactions on Intelligence technology 2024年第3期9卷 679-694页

作者： Tao Zhang Ying Fu Liwei Huang Siyuan Li Shaodi You Chenggang Yan School of Computer Science and Technology Beijing Institute of TechnologyBeijingChina Satellite Information Intelligent Processing and Application Research Laboratory Beijing Institute of Remote SensingBeijingChina Key Laboratory of Spectral Imaging Technology Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of SciencesXi'anChina Institute of Informatics University of AmsterdamAmsterdamNetherlands School of Communication Engineering Hangzhou Dianzi UniversityHangzhouChina

Due to hardware limitations,existing hyperspectral(HS)camera often suffer from low spatial/temporal ***,it has been prevalent to super-resolve a low reso-lution(LR)HS image into a high resolution(HR)HS image with a HR RGB(or mul-tispectral)image *** approaches for this guided super-resolution task often model the intrinsic characteristic of the desired HR HS image using hand-crafted ***,researchers pay more attention to deep learning methods with direct supervised or unsupervised learning,which exploit deep prior only from training dataset or testing *** this article,an efficient convolutional neural network-based method is presented to progressively super-resolve HS image with RGB image ***-ically,a progressive HS image super-resolution network is proposed,which progressively super-resolve the LR HS image with pixel shuffled HR RGB image ***,the super-resolution network is progressively trained with supervised pre-training and un-supervised adaption,where supervised pre-training learns the general prior on training data and unsupervised adaptation generalises the general prior to specific prior for variant testing *** proposed method can effectively exploit prior from training dataset and testing HS and RGB images with spectral-spatial *** has a good general-isation capability,especially for blind HS image *** experimental results show that the proposed deep progressive learning method out-performs the existing state-of-the-art methods for HS image super-resolution in non-blind and blind cases.

关键词： computer vision deep neural networks image processing image resolution unsupervised learning

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Solid-phase sintering and vapor-liquid-solid growth of BP@MgO quantum dot crystals with a high piezoelectric response

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Journal of Advanced Ceramics 2022年第11期11卷 1725-1734页

作者： Qingwei LIAO Wei HOU Kexuan LIAO Liyin CHEN Yujun SONG Guowei GAO Lei QIN Key Laboratory of Sensors Beijing Information Science&Technology UniversityBeijing 100192China Key Laboratory of Modern Measurement&Control Technology Ministry of EducationBeijing Information Science&Technology UniversityBeijing 100192China Key Laboratory of Photoelectric Testing Technology Beijing Information Science&Technology UniversityBeijing 100192China School of Chemical Science and Engineering Tongji UniversityShanghai 200092China Harvard John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridge 02138USA Center of Modern Physics Technology School of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China

Low-dimensional piezoelectric and quantum piezotronics are two important branches of low-dimensional materials,playing a significant role in the advancement of low-dimensional devices,circuits,and ***,we firstly propose a solid-phase sintering and vapor–liquid–solid growth(SS–VLS-like)method of preparing a quantum-sized oxide material,i.e.,black phosphorus(BP)@MgO quantum dot(QD)crystal with a strong piezoelectric ***-sized MgO was obtained by Mg slowly released from MgB_(2) within the confinement of a nanoflake BP *** the slow release of Mg only grows nanometer-sized MgO to hinder the further growth of MgO,we added a heterostructure matrix constraint:nanoflake *** the BP as the matrix confinement,MgO QDs embedded in the BP@MgO QD crystals were *** crystals have a layered two-dimensional(2D)structure with a thickness of 11 nm and are stable in the *** addition,piezoresponse force microscopy(PFM)images show that they have extremely strong *** strong polarity can also be proved by polarization reversal and a simple pressure sensor.

关键词： quantum dots(QDs) piezoelectric black phosphorus(BP) MgO

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