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A core-satellite self-assembled SERS aptasensor containing a“biological-silent region”Raman tag for the accurate and ultrasensitive detection of histamine

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Food science and Human Wellness 2024年第2期13卷 1029-1039页

作者： Chen Chen Yingfang Zhang Ximo Wang Xuguang Qiao Geoffrey I.N.Waterhouse Zhixiang Xu Key Laboratory of Food Processing Technology and Quality Control in Shandong Province College of Food Science and EngineeringShandong Agricultural UniversityTai’an 271018China School of Chemical Sciences The University of AucklandAuckland 1142New Zealand

Herein,a novel interference-free surface-enhanced Raman spectroscopy(SERS)strategy based on magnetic nanoparticles(MNPs)and aptamer-driven assemblies was proposed for the ultrasensitive detection of histamine.A core-satellite SERS aptasensor was constructed by combining aptamer-decorated Fe_(3)O_(4)@Au MNPs(as the recognize probe for histamine)and complementary DNA-modified silver nanoparticles carrying 4-mercaptobenzonitrile(4-MBN)(Ag@4-MBN@Ag-c-DNA)as the SERS signal probe for the indirect detection of *** an applied magnetic field in the absence of histamine,the assembly gave an intense Raman signal at“Raman biological-silent”region due to *** the presence of histamine,the Ag@4-MBN@Ag-c-DNA SERS-tag was released from the Fe_(3)O_(4)@Au MNPs,thus decreasing the SERS *** optimal conditions,an ultra-low limit of detection of 0.65×10^(-3)ng/mL and a linear range 10^(-2)-10^5 ng/mL on the SERS aptasensor were *** histamine content in four food samples were analyzed using the SERS aptasensor,with the results consistent with those determined by high performance liquid *** present work highlights the merits of indirect strategies for the ultrasensitive and highly selective SERS detection of small biological molecules in complex matrices.

关键词： Surface-enhanced Raman spectroscopy Raman biological-silent region Aptamer Histamine detection Universal SERS-tag

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Deintercalation of Al from MoAlB by molten salt etching to achieve a Mo_(2)AlB_(2) compound and 2D MoB nanosheets

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Journal of Advanced Ceramics 2023年第5期12卷 943-953页

作者： Junji Mou Shibo Li Weiwei Zhang Weimin Xu Shukai Fan Guoping Bei Center of Materials Science and Engineering School of MechanicalElectronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China China Porcelain Fuchi(Suzhou)High Tech Nano Materials Co. Ltd.Suzhou 215100China

Two-dimensional(2D)MoB metal borides(MoB MBene)have attracted much attention due to their fascinating properties and functional *** far,work on the synthesis of 2D MoB nanosheets by acid or alkaline etching of MoAlB has not been very *** has been proposed that the 2D MoB MBene may be fabricated by chemical etching of a Mo_(2)AlB_(2) precursor,but further investigations were not performed possibly due to the difficult preparation of the metastable Mo_(2)AlB_(2) compound at high temperatures by solid-state ***,we report on the successful synthesis of the Mo_(2)AlB_(2) compound and 2D MoB nanosheets by the deintercalation of Al from MoAlB through a ZnCl_(2) molten salt etching approach at relatively low *** influence of etching temperature,etching time,and starting mixtures on the formation of desirable phases have been investigated.A pure Mo_(2)AlB_(2) compound was synthesized at temperatures below 600℃,while the 2D MoB MBene nanosheets were obtained at 700℃through the molten salt etching of *** addition,the present work further confirms that the MoB MBene can be prepared by etching the as-synthesized Mo_(2)AlB_(2) precursor in LiF–HCl *** work demonstrates that the molten salt etching is an effective method to prepare 2D MoB MBene.

关键词： two-dimensional(2D)materials Mo_(2)AlB_(2) MoB metal borides(MoB MBene) molten salt etching microstructure

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Stability and performance analysis of the compressed Kalman filter algorithm for sparse stochastic systems

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science China(Technological sciences) 2024年第2期67卷 380-394页

作者： LI RongJiang GAN Die XIE SiYu LüJinHu Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China Zhongguancun Laboratory Beijing 100049China School of Aeronautics and Astronautics University of Electronic Science and Technology of ChinaChengdu 611731China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China

This paper considers the problem of estimating unknown sparse time-varying signals for stochastic dynamic *** deal with the challenges of extensive sparsity,we resort to the compressed sensing method and propose a compressed Kalman filter(KF)*** algorithm first compresses the original high-dimensional sparse regression vector via the sensing matrix and then obtains a KF estimate in the compressed low-dimensional ***,the original high-dimensional sparse signals can be well recovered by a reconstruction *** ensure stability and establish upper bounds on the estimation errors,we introduce a compressed excitation condition without imposing independence or stationarity on the system signal,and therefore suitable for feedback *** further present the performance of the compressed KF ***,we show that the mean square compressed tracking error matrix can be approximately calculated by a linear deterministic difference matrix equation,which can be readily evaluated,analyzed,and ***,a numerical example demonstrates that our algorithm outperforms the standard uncompressed KF algorithm and other compressed algorithms for estimating high-dimensional sparse signals.

关键词： sparse signal compressed sensing Kalman filter algorithm compressed excitation condition stochastic stability tracking performance

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SimHOEPI:A resampling simulator for generating single nucleotide polymorphism data with a high-order epistasis model

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Quantitative Biology 2024年第2期12卷 197-204页

作者： Yahan Li Xinrui Cai Junliang Shang Yuanyuan Zhang Jin-Xing Liu School of Computer Science Qufu Normal UniversityRizhaoChina School of Information and Control Engineering Qingdao University of TechnologyQingdaoChina School of Health and Life Sciences University of Health and Rehabilitation SciencesQingdaoChina

Epistasis is a ubiquitous phenomenon in genetics,and is considered to be one of main factors in current efforts to unveil missing heritability of complex *** data is crucial for evaluating epistasis detection tools in genome-wide association studies(GWAS).Existing simulators normally suffer from two limitations:absence of support for high-order epistasis models containing multiple single nucleotide polymorphisms(SNPs),and inability to generate simulation SNP data *** this study,we proposed a simulator SimHOEPI,which is capable of calculating penetrance tables of high-order epistasis models depending on either prevalence or heritability,and uses a resampling strategy to generate simulation data *** of SimHOEPI are the preservation of realistic minor allele frequencies in sampling data,the accurate calculation and embedding of high-order epistasis models,and acceptable simulation time.A series of experiments were carried out to verify these properties from different *** results show that SimHOEPI can generate simulation SNP data independently with high-order epistasis models,implying that it might be an alternative simulator for GWAS.

关键词： high-order epistasis model penetrance table resampling strategy simulation single nucleotide polymorphisms

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Trifunctional Cu-Mesh/Cu_(2)O@FeO Nanoarrays for Highly Efficient Degradation of Antibiotic, Inactivation of Antibiotic-Resistant Bacteria, and Damage of Antibiotics Resistance Genes

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Energy & Environmental Materials 2023年第1期6卷 349-359页

作者： Long Zhao Wei Zhou Ming Wen Qingsheng Wu Weiying Li Yongqing Fu Quanjing Zhu Sheng Chen and Jiaqi Ran Shanghai Key Laboratory of Chemical Assessment and Sustainability State Key Laboratory of Pollution Control and Resource ReuseSchool of Chemical Science and EngineeringCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE99UK

Trifunctional Cu-mesh/Cu_(2)O@FeO nanoarrays heterostructure is designed and fabricated by integrating CuCu_(2)O@FeO nanoarrays onto Cu-mesh(CM)via an in situ growth and phase transformation *** is successfully applied to efficiently mitigate the antibiotic pollution,including degradation of antibiotics,inactivation of antibiotic-resistant bacteria(ARB),and damage of antibiotics resistance genes(ARGs).Under visible-light irradiation,CM/CuCu_(2)O@FeO nanoarrays exhibit a superior degradation efficiency on antibiotics(e.g.,up to 99%in 25 min for tetracycline hydrochloride,TC),due to the generated reactive oxygen species(ROS),especially the dominant·O^(2−).It can fully inactivate ***(HB101)with initial number of~108 CFU mL^(−1) in 10 min,which is mainly attributed to the synergistic effects of 1D nanostructure,dissolved metal ions,and generated ***,it is able to damage ARGs after 180 min of photodegradation,including tetA(vs TC)of 3.3 log 10,aphA(vs kanamycin sulfate,KAN)of 3.4 log 10,and tnpA(vs ampicillin,AMP)of 4.4 log 10,*** work explores a green way for treating antibiotic pollution under visible light.

关键词： antibiotic antibiotic resistance genes antibiotic-resistant bacteria Cu-Mesh/Cu_(2)O@FeO nanoarrays photocatalytic degradation

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U-net Model with Particle Swarm Optimization for Floating Raft Information Extraction 13

U-net Model with Particle Swarm Optimization for Floating Ra...

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13th International Conference on Information science and Technology, ICIST 2023

作者： Liu, Yuanyue Fan, Jianchao Zhao, Jin Wang, Jun School of Computer Science and Engineering Chongqing Three Gorges University Chongqing China School of Control Science and Engineering Dalian University of Technology Dalian China

ISBN: (纸本)9798350313925

Extracting the sea area of Marine floating raft culture is contributed to the rational use of aquaculture resources. The availability of remote sensing technology can dynamically detect aquaculture rafts. As a classical semantic segmentation model, U-net can also be beneficial to extract the synthetic aperture radar images of marine cultivation. However, the parameters of U-net are customarily set by experts based on experience and cannot be changed dynamically. In this paper, a method for flexibly designing U-net model parameters by particle swarm optimization is presented. Treat individuals with diverse parameters as a swarm and randomly initialize the encoded information, allowing each individual to apply appraisal indicators for fitness evaluation. Implementing particle updates and iteratively improving model parameters in interactive learning between individuals and populations. The experimental results demonstrate that the model can obtain competitive outcomes on multiple evaluation indicators after parameter optimization. © 2023 IEEE.

关键词： Iterative methods

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Meshing Theory and Modeling Simulation of Miniature Archimedean Cone Worm Gear Pair 4th

Meshing Theory and Modeling Simulation of Miniature Archimed...

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4th International Conference on Mechanical Design and Simulation, MDS 2024

作者： Zhang, Wang Fan, Yuanxun Ma, Haocong Xu, Zhiwei School of Mechanical Engineering Nanjing University of Science and Technology Nanjing China Shanghai Institute of Aerospace Control Technology Shanghai201109 China

ISBN: (纸本)9789819778867

Conical worm gearing is a new type of worm gearing composed of a conical worm and a conical worm wheel, which differs from ordinary cylindrical worm gearing in that the working helical surface of the worm in the conical worm gearing pair is offset on the side of the worm wheel, and the shape of the worm and the worm wheel are conical. Taking the Archimedean cone-worm transmission as the research object, using the principle of gear meshing, the tooth equations of the cone worm and cone worm gear are deduced, combining with MATLAB, Solidworks and other computer-aided software for solid modeling of the cone-worm transmission, to obtain the three-dimensional model and the model is assembled and then analyzed by the finite element software to find out that the contact and force conditions of the cone-worm transmission meet the actual requirements, which is a good idea for the design and reliability of miniature transmission mechanism. It provides theoretical support for the design and reliability of micro transmission mechanism. © The Author(s) 2025.

关键词： MATLAB

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Aperiodically Intermittent control Approach to Finite-Time Synchronization of Delayed Inertial Memristive Neural Networks

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2025年第4期6卷 1014-1023页

作者： Jiang, Yuxin Zhu, Song Shen, Mouquan Wen, Shiping Mu, Chaoxu School of Mathematics Xuzhou221116 China Nanjing Technology University College of Electrical Engineering and Control Science Nanjing211816 China University of Technology Sydney Centre for Artificial Intelligence UltimoNSW2007 Australia Tianjin University School of Electrical and Automation Engineering Tianjin300072 China

This article investigates the finite-time synchronization (FTS) for inertial memristive neural networks (IMNNs) with time-delays by the aperiodically intermittent control approach. Compared with the reduced-order method utilized in the existing literature, this article considers the FTS of delayed IMNNs directly without order reduction. First, the error IMNNs with time-delays is designed through the theories of set-valued mappings and differential inclusions, and its finite-time stability problem is discussed by applying the finite-time stability theorem. Furthermore, by constructing nonperiodic intermittent state-feedback controller and nonperiodic intermittent adaptive control strategy, the sufficient criteria to ensure the FTS of the master-slave delayed IMNNs are derived, and the settling times are explicitly estimated. Finally, a simulation to confirm the availability of results is provided. © 2020 IEEE.

关键词： Time delay

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Confinement properties of circular concrete columns wrapped with prefabricated textile-reinforced fine concrete shells

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Frontiers of Structural and Civil engineering 2023年第10期17卷 1554-1570页

作者： Qin ZHANG Qiao-Chu YANG Xiang-Lin GU Yong JIANG Hai-Yang ZHU College of Civil and Transportation Engineering Hohai UniversityNanjing 210024China Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education Tongji UniversityShanghai 200092China School of Civil Engineering Suzhou University of Science and TechnologySuzhou 215009China

This paper proposes an innovative column composed of a core column(including both reinforced concrete(RC)and plain concrete(PC)columns)and a prefabricated textile-reinforced fine concrete(TRC)*** study the confinement properties of TRC shells on this novel type of concrete column,20 circular specimens,including 12 PC columns and 8 RC columns,were prepared for axial compressive *** key parameters,including the column size,reinforcing ratio of the carbon textile,concrete strength,and stirrup spacing,were *** results indicated that the compressive properties of the columns were improved by increasing the reinforcing ratio of the textile *** the case of TRC-confined PC columns,the maximum improvement in the peak load was 56.3%,and for TRC-confined RC columns,the maximum improvement was 60.2%.Based on the test results,an analytical model that can be used to calculate the stress–strain curves of prefabricated TRC shell-confined concrete columns has been *** calculated curves predicted by the proposed model agreed well with the test results.

关键词： textile-reinforced fine concrete prefabricated shell confined concrete column confinement properties stress–strain relationship

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Optimal Tracking control for Leader-Following Consensus of Nonlinear Multiagent Systems

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IEEE Transactions on Systems, Man, and Cybernetics: Systems 2025年第5期55卷 3098-3107页

作者： Su, Wei Mu, Chaoxu Yang, Xiong Bian, Jinshan Sun, Changyin Tianjin University School of Control Science and Engineering Tianjin300072 China Anhui University Engineering Research Center of Autonomous Unmanned System Technology Ministry of Education Hefei230601 China Anhui University School of Artificial Intelligence Hefei230000 China Southeast University School of Automation Nanjing210096 China

This article investigates distributed adaptive leader-following consensus tracking optimal control problem for nonlinear multiagent systems (MASs) subject to unknown nonlinearities and uncertain external disturbances. In contrast to traditional centralized control, the primary challenge is that only partial subsystems can access the desired reference trajectory. To address this, positive time-varying smooth function compensating terms are introduced to counteract the effects of uncertain external disturbances and unknown desired trajectories. Then, by fusing consensus errors into the backstepping technique, feedforward controllers are given. On this basis, the controlled nonlinear systems are transformed into an equivalent affine form, and feedback optimal controllers are designed using actor and critic neural networks (NNs) to execute control behavior and evaluate control performance. The whole control laws comprise both feedforward and feedback controllers. The proposed distributed adaptive consensus control protocol can simultaneously achieve desired optimal control performance and minimize the cost function, as demonstrated through theoretical analysis and simulation results. © 2025 IEEE.

关键词： Cost functions

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