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Computer Modeling in Engineering & sciences 2024年第6期139卷 2361-2398页

作者： Xiaofang Kang Qiwen Huang Zongqin Wu Jianjun Tang Xueqin Jiang Shancheng Lei School of Civil Engineering Anhui Jianzhu UniversityHefei230601China key laboratory of Intelligent Underground detection technology Anhui Jianzhu UniversityHefei230601China Chengnan College Changsha University of Science and TechnologyChangsha410015China

Tuned mass damper inerter(TMDI)is a device that couples traditional tuned mass dampers(TMD)with an inertial *** inertial device produces resistance proportional to the relative acceleration at its two ends through its“inertial”*** to its unique mechanical properties,TMDI has received widespread attention and application in the past twenty *** different configurations are required in different practical situations,TMDI is still active in the research on vibration control and energy harvesting in *** paper provides a comprehensive review of the research status of *** work first examines the generation and important vibration control characteristics of ***,the energy harvesting performance of electromagnetic tuned mass damper inerter(EM-TMDI)is *** work emphasizes the formation of a passive dynamic vibration absorber by coupling traditional TMD with inertial *** paper also summarizes the design and implementation of optimal vibration control and energy harvesting for ***,this paper details the applications of TMDI in the fields of bridges and building ***,this paper summarizes the necessity of research on tuned mass-damper-inertia,the challenges faced currently,and future research directions,such as control of parameters in electromagnetic energy harvesting TMDI systems and low-cost TMDI.

关键词： TMDI EM-TMDI energy harvesting vibration control inertial device

Enzyme-conjugated hybridization chain reaction for magneto-controlled immunoassay of squamous cell carcinoma antigen with pH meter

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Chinese Chemical Letters 2019年第9期30卷 1631-1634页

作者： Jiancui Chen Huifeng Xue Qiaoyun Chen Yao Lin Dianping Tang Jinwen Zheng Cervical Disease Diagnosis and Treatment Health Center Fujian Provincial Maternity and Children's Hospital Affiliated Hospital of Fujian Medical University Fuzhou 350001 China College of Life sciences Fujian Normal University Fuzhou 350117 China key laboratory for Analytical science of Food Safety and Biology (MOE & fujian Province) Department of Chemistry Fuzhou University Fuzhou 350116 China

A nanoparticle-based potentiometric immunoassay was designed for the sensitive detection of squamous cell carcinoma antigen(SCCA;cervical carcinoma marker) on a portable pH meter coupling enzyme-labeled hybridization chain reaction(HCR) with two alternating hairpin DNA probes for the signal amplification. Initially, a sandwich-type immunoreaction was carried out between anti-SCCA capture antibody-conjugated magnetic bead and detection antibody/initiator strand-coated gold nanoparticle(AuNP). Then, the HCR reaction was readily executed between two glucose oxidase(GOx)-labeled hairpins through the initiator strand to form numerous GOx concatamers on the AuNP via the long nicked double-helix. The concatenated GOx oxidized glucose into gluconic acid and hydrogen peroxide, thus resulting in the pH change of the detection solution on a handheld pH meter. Several labeling protocols including GOx-antibody, GOx-AuNP-antibody and GOx-HCR-AuNP-antibody were investigated for detection of target SCCA, and improved analytical features were obtained with the immune-HCR assay. Under optimum conditions, the immune-HCR assay exhibited good pH responses for the determination of SCCA at a concentration as low as 5.7 pg/mL. Additionally, the immune-HCR assay had good precision and reproducibility, high specificity, and acceptable accuracy for analyzing human serum specimens.

关键词： Immune-HCR assay pH Meter Molecular biological amplification Nano label Enzyme label

Preparation of Nitrogen-doped Carbon Dots from Coke Powder as a Fluorescent Chemosensor for Selective and Sensitive detection of Cr (Ⅵ)

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Journal of Wuhan University of technology(Materials science) 2022年第6期37卷 1096-1104页

作者： MENG Juan LI Shiqian DING Ling ZHOU Chuang JIANG Rui ZHANG Qingtian CHENG Zhengzai GAUTHIER Mario HU Ya WU Lin School of Chemistry and Chemical Engineering Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steel makingWuhan University of Science and TechnologyWuhan 430081China fujian Universities and Colleges Engineering Research Center of Modern Facility Agriculture of fujian University Fujian Polytechnic Normal UniversityFuqing 350300China Chemistry Department University of WaterlooWaterlooOntarioN2L 3G1Canada

The nitrogen-doped carbon dots(N-CDs)were prepared by using coke powder as carbon source and one-step hydrothermal *** N-CDs were studied as a fluorescent chemosensor for determining Cr(Ⅵ)in *** selective,sensitive,reproducibility and stability of as-prepared N-CDs were *** morphology,composition and properties of N-CDs were characterized by a series of *** fluorescence quenching of N-CDs by Cr(Ⅵ)was *** experimental results reveal that the obtained N-CDs have great hydrophilicity and strong luminescence properties,which demonstrates the successful doping of nitrogen into the *** surface-active groups and emission wavelength range of CDs increase due to the electronegativity and electron donor effect of doping N ***,the N-CDs exhibit good photochemical properties for the detection of Cr(Ⅵ),including a wide linear range from 0.3 to 200μM(R^(2)=0.9935)and a low detection limit of 0.10μM at the signal-to-noise ratio of 3(S/N=3).Moreover,the N-CDs as a sensor was used successfully for Cr(Ⅵ)detection in real water samples with recovery rates of 99.9%-110.6%.This sensor also shows highly reproducibility and *** N-CDs fluorescent chemical sensor may be a potential candidate for applying in the field of other fluorescent chemical sensing,catalysis,photoelectric devices and other fields.

关键词： carbon dots nitrogen doping preparation fluorescence detection Cr(Ⅵ)

Reduced graphene oxide aerogel decorated with Mo_(2)C nanoparticles toward multifunctional properties of hydrophobicity,thermal insulation and microwave absorption

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International Journal of Minerals,Metallurgy and Materials 2023年第3期30卷 536-547页

作者： Yahui Wang Minghui Zhang Xuesong Deng Zhigang Li Zongsheng Chen Jiaming Shi Xijiang Han Yunchen Du key laboratory of Infrared and Low Temperature Plasma of Anhui Province National University of Defense TechnologyHefei 230037China MIIT key laboratory of Critical Materials technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China State key laboratory of Pulsed Power Laser technology National University of Defense TechnologyHefei 230037China Anhui provincial laboratory of Advanced Laser technology National University of Defense TechnologyHefei 230037China

Reduced graphene oxide(rGO)aerogels are emerging as very attractive scaffolds for high-performance electromagnetic wave absorption materials(EWAMs)due to their intrinsic conductive networks and intricate interior microstructure,as well as good compatibility with other electromagnetic(EM)***,we realized the decoration of rGO aerogel with Mo_(2)C nanoparticles by sequential hydrothermal assembly,freeze-drying,and high-temperature *** show that Mo_(2)C nanoparticle loading can be easily controlled by the ammonium molybdate to glucose molar *** hydrophobicity and thermal insulation of the rGO aerogel are effectively improved upon the introduction of Mo_(2)C nanoparticles,and more importantly,these nanoparticles regulate the EM properties of the rGO aerogel to a large *** more Mo_(2)C nanoparticles may decrease the overall attenuation ability of the rGO aerogel,they bring much better impedance *** a molar ratio of 1:1,a desirable balance between attenuation ability and impedance matching is *** this context,the Mo_(2)C/r GO aerogel displays strong reflection loss and broad response bandwidth,even with a small applied thickness(1.7 mm)and low filler loading(9.0wt%).The positive effects of Mo_(2)C nanoparticles on multifunctional properties may render Mo_(2)C/r GO aerogels promising candidates for high-performance EWAMs under harsh conditions.

关键词： Mo_(2)C/reduced graphene oxide aerogel microwave absorption dielectric loss hydrophobicity thermal insulation

Determination of Melamine in Dairy Products and Melamine Tableware by Inhibition Electrochemiluminescent Method

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Chinese Journal of Chemistry 2011年第8期29卷 1601-1605页

作者：井伟吕水源李小晶江晓芬陈旻实梁鸣唐熙许才明陈锦权 Food science College of fujian Agriculture and Forestry University Fuzhou Fujian 350007 China fujian Entry-Exit Inspection and Quarantine Bureau Key Laboratory of Consumer Products Safety Hu Dong Road 312 Fuzhou Fujian 350001 China

An electrochemiluminescent （ECL） method has been developed for the determination of melamine based on the inhibition of luminol ECL. A significant luminol ECL can be found at 1.47 V in the phosphate buffer solution at high pHs and low potential scan rates, this ECL signal can be inhibited obviously by melamine. The decrease of ECL intensity was linearly proportional to the logarithm of melamine concentration in the range of 1--100 ng/mL （R2~0.9911） and with the detection limit of 0.1 ng/mL. The method has been applied successfully to determine melamine in dairy products and melamine tableware, the recoveries were in the range of 98.5%--103.7% and 95.5%--106.0%, respectively. The mechanism of the inhibition effect was also proposed, the active oxygen （O2- ） generated from the electrooxidation of OH- reacted with luminol anion （L^-） to generate light emission, and the present of melamine can eliminate the active oxygen, which cause the decrease of the ECL intensity.

关键词： melamine luminol electrochemiluminescent inhibitor analytical method

A bioactive glass functional hydrogel enhances bone augmentation via synergistic angiogenesis,self-swelling and osteogenesis

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Bioactive Materials 2023年第4期22卷 201-210页

作者： fujian Zhao Zhen Yang Huacui Xiong Yang Yan Xiaofeng Chen Longquan Shao Stomatological Hospital Southern Medical UniversityGuangzhou510280China Department of Biomedical Engineering School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510641China National Engineering Research Center for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou510006China Guangdong provincial key laboratory of Construction and detection in Tissue Engineering Guangzhou510515China

Bone augmentation materials usually cannot provide enough new bone for dental implants due to the material degradation and mucosal *** use of hydrogels with self-swelling properties may provide a higher bone augmentation,although swelling is generally considered to be a disadvantage in tissue ***,a double-crosslinked gelatin-hyaluronic acid hydrogels(GH)with self-swelling properties were ***,niobium doped bioactive glasses(NbBG)was dispersed in the hydrogel network to prepare the GH-NbBG *** composite hydrogel exhibited excellent biocompatibility and the addition of NbBG significantly improved the mechanical properties of the *** vivo results found that GH-NbBG synergistically promoted angiogenesis and increased bone augmentation by self-swelling at the early stage of *** addition,at the late stage after implantation,GH-NbBG significantly promoted new bone formation by activating RUNX2/Bglap signaling ***,this study reverses the self-swelling disadvantage of hydrogels into advantage and provides novel ideas for the application of hydrogels in bone augmentation.

关键词： Bioactive glass Bone formation Osteogenesis Angiogenesis

Combining urine surface-enhanced Raman spectroscopy with PCA-SVM algorithm for improving the identification of colorectal cancer at different stages

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Optoelectronics Letters 2023年第2期19卷 101-104页

作者： LIN Jinyong FENG Shangyuan ZHANG Xianzeng key laboratory of OptoElectronic science and technology for Medicine Ministry of EducationFujian Provincial Key Laboratory for Photonics TechnologyFujian Normal UniversityFuzhou 350007China Clinical Oncology School of fujian Medical University Fujian Cancer HospitalFuzhou 350014China

Cancer staging detection is important for clinician to assess the patients' status and make optimal therapy decision. In this study, the machine learning algorithm based on principal component analysis(PCA) and support vector machine(SVM) was combined with urine surface-enhanced Raman scattering(SERS) spectroscopy for improving the identification of colorectal cancer(CRC) at early and advanced stages. Two discriminant methods, linear discriminant analysis(LDA) and SVM were compared, and the results indicated that the diagnostic accuracy of SVM(93.65%) was superior to that of LDA(80.95%). This exploratory study demonstrated the great promise of urine SERS spectra along with PCA-SVM for facilitating more accurate detection of CRC at different stages.

关键词： Combining urine surface-enhanced Raman spectroscopy PCA-SVM algorithm for improving colorectal cancer at different stages Raman

On detecting primary user emulation attack using channel impulse response in the cognitive radio network

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Frontiers of Information technology & Electronic Engineering 2017年第10期18卷 1665-1676页

作者： Qiao-mu JIANG Hui-fang CHEN Lei XIE Kuang WANG College of Information science and Electronic Engineering Zhejiang University Hangzhou 310027 China Zhejiang provincial key laboratory of Information Processing Communication and Networking Hangzhou 310027 China

Cognitive radio is an effective technology to alleviate the spectrum resource scarcity problem by opportunistically allocating the spare spectrum to unauthorized users. However, a serious denial-of-service(DoS) attack,named the ‘primary user emulation attack(PUEA)', exists in the network to deteriorate the system performance. In this paper, we propose a PUEA detection method that exploits the radio channel information to detect the PUEA in the cognitive radio network. In the proposed method, the uniqueness of the channel impulse response(CIR) between the secondary user(SU) and the signal source is used to determine whether the received signal is transmitted by the primary user(PU) or the primary user emulator(PUE). The closed-form expressions for the false-alarm probability and the detection probability of the proposed PUEA detection method are derived. In addition, a modified subspace-based blind channel estimation method is presented to estimate the CIR, in order for the proposed PUEA detection method to work in the scenario where the SU has no prior knowledge about the structure and content of the PU signal. Numerical results show that the proposed PUEA detection method performs well although the difference in channel characteristics between the PU and PUE is small.

关键词： Cognitive radio network Primary user emulation attack Subspace-based blind channel estimation Channel impulse response

Gold nanoparticle-decorated MoSe_(2) nanosheets as highly effective peroxidase-like nanozymes for total antioxidant capacity assay

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Nano Research 2023年第5期16卷 7180-7186页

作者： Chengyi Hong Lingling Chen Jiayi Huang Yunling Shen Hongfen Yang Zhiyong Huang Ren Cai Weihong Tan College of Ocean Food and Biological Engineering Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringJimei UniversityXiamen 361021China Molecular science and Biomedicine laboratory State Key Laboratory for Chemo/Bio-Sensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of Biology College of Material Science and EngineeringCollaborative Research Center of Molecular Engineering for TheranosticsHunan UniversityChangsha 410082China University of Texas at Austin AustinTX 78712USA

A visual colorimetric detection strategy is reported for total antioxidant capacity(TAC)assay by using 3,3',5,5'-tetramethylbenzidine(TMB)oxidation as chromogenic substrate based on gold nanoparticle-decorated MoSe_(2) nanosheets(Au@MoSe_(2)).Au@MoSe_(2) nanostructures exhibit high peroxidase-like activity and can catalyze H_(2)O_(2)to oxidize *** on inhibition effect of ascorbic acid(AA)on TMB oxidation,a facile and sensitive colorimetric method was developed for AA *** optimal conditions,the proposed method showed a sensitivity for AA in a concentration range from 2 to 120μM and limit of detection was 0.41μ***,the method was employed for TAC assay in actual samples,including commercial beverages and vitamin C *** work represents a model in nanostructure design and will lead to further development of TAC assay in evaluation of antioxidant food quality.

关键词： nanozymes peroxidase mimics Au@MoSe_(2)nanostructures total antioxidant capacity assay

Super-resolution microscopy based on parallel detection

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Journal of Innovative Optical Health sciences 2019年第6期12卷 210-216页

作者： Zhimin Zhang Shaocong Liu Liang Xu Yubing Han Cuifang Kuang Yong Liu Xiang Hao Hongqin Yang Xu Liu State key laboratory of Modern Optical Instrumentation College of Optical science and Engineering Zhejiang University HangzhouZhejiang 310027P.R.China Ningbo Research Institute Zhejiang University Ningbo 315100P.R.China Collaborative Innovation Center of Extreme Optics Shanxi University TaiyuanShanxi 030006P.R.China College of Electronics and Information Engineering Shanghai University of Electric Power Shanghai 200090P.R.China key laboratory of Optoelectronic science and technology for Medicine Ministry of Education and fujian provincial key laboratory for Photonics technology fujian Normal University Fuzhou 350007P.R.China

Image scanning microscopy based on pixel reassignment can improve the confocal resolution limit without losing the image signal-to-noise ratio(SNR)greatly[***,"Super resolution in confocal imaging,"Optik 80(2)53-54(1988).***,***,"Image scanning microscopy,"***.104(19)198101(2010).***,***,R Heintzmann,"Superresolution by image scanning microscopy using pixel reassignment,"***.38(15)28892892(2013)].Here,we use a tailor-made optical fiber and 19 avalanche pho-todiodes(APDs)as parallel detectors to upgrade our existing confocal microscopy,termed as parallel-detection super resolution(PDSR)*** order to obtain the correct shift value,we use the normalized 2D cross correlation to calculate the shifting value of each *** characterized our system performance by imaging fuorescence beads and applied this system to observing the 3D structure of biological specimen.

关键词： Pixel reassignment SIM parallel-detection super-resolution(PDSR)microscopy normalized Cros correlation algorithm