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Glutamate oxidase-integrated biomimetic Fe_(3)O_(4) hybrids as cascade nanozymes for glutamate detection

Particuology 2024年第5期88卷 192-200页

作者： Peikun Li Yanchao Wang Xiuyan Luo Zixin Geng Jiahui Jia Ruirui Wang Jiandong Cui Hongjie Bian Shiru Jia State Key Laboratory of Food Nutrition and Safety Laboratory of Industrial Fermentation MicrobiologyMinistry of EducationTianjin University of Science and TechnologyTianjin300457China Sports Department Hebei University of Science and TechnologyShijiazhang050000China Research Center for Fermentation Engineering of Hebei College of Bioscience and BioengineeringHebei University of Science and TechnologyShijiazhang050000China

Herein,a new nanozyme/natural enzyme hybrid biosensor was established for ultrasensitive l-glutamic acid(L-Glu)*** Fe_(3)O_(4) nanoparticles with peroxidase-like activity and stability was used as a nanozyme and carrier for immobilizing l-Glutamate oxidase(GLOD)through Schiffff base reaction to construct a chem-enzyme cascade *** resultant Fe_(3)O_(4)-GOLD exhibited a wide linear range(10−500μM)and a low detection limit of 6.03μM for L-Glu ***,the Fe_(3)O_(4)-GOLD exhibited excellent pH stability,thermal stability,reusability and storage *** repeated nine cycles,Fe_(3)O_(4)-GOLD still retained 70%of its initial ***,Fe_(3)O_(4)-GOLD maintained 50%of its initial activity after storage for 20 days,while free GLOD only retained 20%of its initial *** strategy of integrating biomimetic Fe 3 O4 and natural enzymes for cascade catalysis makes it possible to design an efficient and stable chemo-enzyme composite catalysts,which are promising for applications in biosensing and biomimetic catalysis.

关键词： Fe_(3)O_(4) nanozyme GLOD Chemo-enzymes Glutamate detection

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Dual-branch deep learning architecture enabling miner behavior recognition

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Multimedia Tools and Applications 2024年第37期83卷 84523-84538页

作者： Wang, Zheng Liu, Yan Yang, Yi Duan, Siyuan Xi’an Key Laboratory of Electrical Equipment Condition Mornitoring and Power Supply Security Xi’an University of Science and Technology Xi’an710054 China College of Electrical and Control Engineering Xi’an University of Science and Technology Xi’an710054 China

Nonstandard miner behavior can have adverse effects on coal mine safety production. Therefore, accurately capturing miner behavior in complex environments is particularly important. In the intelligent mine monitoring system, using visual perception to detect miner behavior is a challenging task due to high behavioral similarity and difficult temporal relationships. In this paper, a new deep learning framework is proposed to construct a coal miner behavior recognition model with a spatio-temporal dual-branch structure and transposed attention representation mechanism. The spatio-temporal dual-branch structure extracts rich spatial semantic information from intrinsic safety video sensor input video sequences while ensuring effective capture of rapidly changing human behavior. Subsequently, considering the discrimination of miner behavior similarity, a merged transposed weighted representation mechanism (TWR) is introduced to guide the model in extracting feature information more strongly related to the classification target, thereby effectively improving the model’s ability to classify highly similar behaviors. Experiments were conducted on UCF101, HMDB51, and a self-built miner behavior dataset, achieving significant improvements compared to other state-of-the-art methods. This collaborative structure further creates a more discriminative behavior detection model, contributing to the reliability of miner behavior detection. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2024.

关键词： Deep learning

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A signature extracting method for inductive online oil debris sensors based noise-assisted local mean decomposition and kurtosis mode selection

A signature extracting method for inductive online oil debri...

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第35届中国过程控制会议

作者： Ning Wang Minglv Jin Jinglun Xu Ye Zheng Baiyu Zhu Yunqi Cao Pingjie Huang State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang University

The inductive wear debris sensor is extensively utilized for online measurement of metal particles in lubricating oil, enabling the assessment of the operational state of rotating machinery. Given the harsh working environment of the debris sensor, particularly the susceptibility of small-sized debris signals to be overwhelmed by background noise, the challenge lies in effectively processing the signal to eliminate noise and extract debris signatures. A noise-assisted local mean decomposition(LMD) method that combining kurtosis mode selection and mode cell thresholding denoising is investigated. This approach selects modal components containing characteristic debris signals based on kurtosis, mitigates mode mixing by incorporating complementary noise, and ultimately performs noise reduction and signal reconstruction through mode cell thresholding. Through experimental analysis of both simulated signals and actual signals, the proposed method demonstrates its effectiveness in detecting weak debris signals amidst strong background noise, providing critical support for subsequent feature processing.

关键词： oil debris sensor Local mean decomposition kurtosis noise assistance signal reconstruction

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Lanthanum hydroxide showed best application potential in La-based materials based on its stable phosphate adsorption properties in complex water environments

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Journal of Environmental sciences 2025年第6期152卷 465-476页

作者： Linjuan Zhu Yao Zhang Shuo Xu Baoyou Shi Haotian Hao Yili Wang College of Environmental Science and Engineering Beijing Key Lab for Source Control Technology of Water PollutionBeijing Forestry UniversityBeijing 100083China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Three lanthanum morphology materials encompassing all lanthanum composites were synthesized by the direct precipitation method,and their phosphate adsorption order was determined as La_(2)(CO_(3))_(3)>La(OH)_(3)>La_(2)O_(3).Further comparison of the adsorption performance between La_(2)(CO_(3))_(3) and La(OH)_(3) revealed that the former exhibited a twofold higher rate of adsorption compared to the *** presence of SO_(4)^(2−),HCO_(3)−,Mg^(2+),and HA in the water led to a decrease in the phosphate adsorption of La_(2)(CO_(3))_(3) and La(OH)_(3),while Ca^(2+)enhances the adsorption of phosphoric acid by both *** to La_(2)(CO_(3))_(3),La(OH)_(3) exhibited stronger resistance against coexisting *** pH was the limiting factor for phosphate adsorption in both cases,and their adsorption capacity decreased significantly as the pH *** phosphate adsorption mechanism of La_(2)(CO_(3))_(3) was ligand exchange to form inner-sphere complexes,while the phosphate adsorption mechanism of La(OH)_(3) involved ligand exchange,inner-sphere complexation,and electrostatic *** stability of La(OH)_(3) exhibited superior performance compared to that of La_(2)(CO_(3))_(3) over 5 adsorption-desorption *** La_(2)(CO_(3))_(3) had a higher initial phosphate adsorption capacity than La(OH)_(3),its phosphate adsorption capacity decreased by 40%after five adsorption-desorption cycles,while that of La(OH)_(3) decreased by 2.3%.Additionally,the amount of La(OH)_(3) adsorbed after five cycles was 25.6%higher than that of La_(2)(CO_(3))_(3).Therefore,La(OH)_(3) performs better regeneration adsorption than La_(2)(CO_(3))_(3).Furthermore,a smaller dosage of La(OH)_(3) was required compared to La_(2)(CO_(3))_(3) in a test aimed at lowering the actual phosphate concentration in water to 0.5 mg/*** summary,La(OH)_(3) is a more suitable substrate for cyclic adsorption for phosphorus removal than La_(2)(CO_(3))_(3) and has better potential for practi

关键词： Phosphate removal Adsorption La(OH)3 La2(CO_(3))3 Regeneration

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Ozone oxidation of 4H-SiC and flat-band voltage stability of SiC MOS capacitors

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Chinese Physics B 2022年第11期31卷 500-509页

作者： Zhi-Peng Yin Sheng-Sheng Wei Jiao Bai Wei-Wei Xie Zhao-Hui Liu Fu-Wen Qin De-Jun Wang Key Laboratory of Intelligent Control and Optimization for Industrial Equipment Ministry of Education School of Control Science and Engineering Faculty of Electronic Information and Electrical EngineeringDalian University of TechnologyDalian 116024China State Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)Dalian University of TechnologyDalian 116024China

We investigate the effect of ozone(O_(3))oxidation of silicon carbide(SiC)on the flat-band voltage(Vfb)stability of SiC metal–oxide–semiconductor(MOS)*** SiC MOS capacitors are produced by O_(3)oxidation,and their Vfbstability under frequency variation,temperature variation,and bias temperature stress are *** ion mass spectroscopy(SIMS),atomic force microscopy(AFM),and x-ray photoelectron spectroscopy(XPS)indicate that O_(3)oxidation can adjust the element distribution near SiC/SiO_(2)interface,improve SiC/SiO_(2)interface morphology,and inhibit the formation of near-interface defects,*** addition,we elaborate the underlying mechanism through which O_(3)oxidation improves the Vfbstability of SiC MOS capacitors by using the measurement results and O_(3)oxidation kinetics.

关键词： SiC MOS capacitors ozone oxidation bias temperature instability Deal-Grove model

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High-gain signal-on PEDOT:PSS organic photoelectrochemical transistor biosensing modulated by a MXene/MOFs/NiO Schottky heterojunction

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science China Chemistry 2023年第2期66卷 578-585页

作者： Zheng Li Yi-Tong Xu Jin Hu Ting Wang Fang-Qing Liu Hong Zhou Guang-Xu Chen Peng Lin Wei-Wei Zhao Jing-Juan Xu Hong-Yuan Chen State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Shenzhen Key Laboratory of Special Functional Materials&Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China Shandong Key Laboratory of Biochemical Analysis College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042China School of Environment and Energy State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSouth China University of TechnologyGuangzhou510006China

Herein we report a high-gain signal-on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)organic electrochemical transistor(OECT)biosensing using an accumulation-mode PEDOT:PSS OECT modulated by a light-fueled MXene/MOFs/Ni O Schottky *** such a system,the MXene/MOFs/Ni O Schottky heterojunction exhibited superior gating effect,as it not only enabled the fast-directional charge transfer but also guaranteed the maximal accessibility of the electrolyte to topped 2D MXene with large surface *** linkage with a bi-enzyme cascade system,the quinone derivatives produced by the cascade reaction of alkaline phosphatase(ALP)and tyrosinase(TYR)could serve as effective electron acceptors for the representative Ti_(3)C_(2)/PCN-224/Ni O heterojunction,underpinning an innovative method for sensitive detection of ALP activity with a low detection limit of 0.001 U L^(-1).Remarkably,the as-developed system demonstrated a remarkable current gain as high as near 10^(4),which to our knowledge is the highest one among existing OECT biosensory *** work represents a generic protocol to develop the novel signal-on PEDOT:PSS OECT platform towards biochemical detection and beyond.

关键词： signal-on PEDOT:PSS organic electrochemical transistor biosensing Schottky heterojunction

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A novel electro-Fenton hybrid system for enhancing the interception of volatile organic compounds in membrane distillation desalination

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Journal of Environmental sciences 2024年第4期138卷 189-199页

作者： Hongxin Liu Kuiling Li Kunpeng Wang Zhiyong Wang Zimou Liu Sichao Zhu Dan Qu Yu Zhang Jun Wang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua UniversityBeijing 100084China School of Chemical and Environmental Engineering Beijing CampusChina University of Mining and TechnologyBeijing 100083China Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China

Membrane distillation(MD)is a promising alternative desalination technology,but the hydrophobic membrane cannot intercept volatile organic compounds(VOCs),resulting in aggravation in the quality of *** term of this,electro-Fenton(EF)was coupled with sweeping gas membrane distillation(SGMD)in a more efficient way to construct an advanced oxidation barrier at the gas-liquid interface,so that the VOCs could be trapped in this layer to guarantee the water quality of the *** the so-called EF-MD process,an interfacial interception barrier containing hydroxyl radical formed on the hydrophobic membrane *** contributed to the high phenol rejection of 90.2% with the permeate phenol concentration lower than 1.50 mg/*** interceptions can be achieved in a wide temperature range,even though the permeate flux of phenol was also *** EF-MD system was robust to high salinity and could electrochemically regenerate ferrous ions,which endowed the long-term stability of the *** novel EF-MD configuration proposed a valuable strategy to intercept VOCs in MD and will broaden the application of MD in hypersaline wastewater treatment.

关键词： Membrane distillation VOC interception Interfacial oxidation Electro-Fenton Hypersaline wastewater

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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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Identification of important factors influencing nonlinear counting systems

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Frontiers of Information technology & Electronic engineering 2022年第1期23卷 123-133页

作者： Xinmin ZHANG Jingbo WANG Chihang WEI Zhihuan SONG State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang UniversityHangzhou310027China

Identifying factors that exert more influence on system output from data is one of the most challenging tasks in science and *** this work,a sensitivity analysis of the generalized Gaussian process regression(SA-GGPR)model is proposed to identify important factors of the nonlinear counting *** SA-GGPR,the GGPR model with Poisson likelihood is adopted to describe the nonlinear counting *** GGPR model with Poisson likelihood inherits the merits of nonparametric kernel learning and Poisson distribution,and can handle complex nonlinear counting ***,understanding the relationships between model inputs and output in the GGPR model with Poisson likelihood is not readily accessible due to its nonparametric and kernel ***-GGPR addresses this issue by providing a quantitative assessment of how different inputs affect the system *** application results on a simulated nonlinear counting system and a real steel casting-rolling process have demonstrated that the proposed SA-GGPR method outperforms several state-of-the-art methods in identification accuracy.

关键词： Important factors Nonlinear counting system Generalized Gaussian process regression Sensitivity analysis Steel casting-rolling process

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Enhanced removal of high-As(Ⅲ)from Cl(-Ⅰ)-diluted SO_(4)(-Ⅱ)-rich wastewater at pH 2.3 via mixed tooeleite and(Cl(-Ⅰ)-free)ferric arsenite hydroxychloride formation

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Journal of Environmental sciences 2023年第2期124卷 31-41页

作者： Zidan Yuan Guoqing Zhang Xing Wu Xu Ma Jinru Lin Shaofeng Wang Yongfeng Jia Key Laboratory of Pollution Ecology and Environmental Engineering Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control Ministry of EducationHenan Key Laboratory for Environmental Pollution ControlSchool of EnvironmentHenan Normal UniversityHenan 453007China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education China)School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

An advanced cost-saving method of removal of high-As(Ⅲ)from SO_(4)(-Ⅱ)-rich metallurgical wastewater has been developed by diluting the SO_(4)(-Ⅱ)content with As(Ⅲ)-Cl(-Ⅰ)-rich metallurgical wastewater and then by the direct precipitation of As(Ⅲ)with Fe(Ⅲ)at pH ***(Ⅲ)removal at various SO_(4)(-Ⅱ)/Cl(-Ⅰ)molar ratios and temperatures was *** results showed that 65.2–98.2%of As(Ⅲ)immobilization into solids occurred at the SO_(4)(-Ⅱ)/Cl(-I)molar ratios of 1:1–32 and 15–60℃in 3 days,which were far higher than those in aqueous sole SO4(-Ⅱ)or Cl(-Ⅰ)media at the equimolar SO_(4)(-Ⅱ)or Cl(-Ⅰ)and the same ***_(4)(-Ⅱ)/Cl(-Ⅰ)molar ratio of 1:4 and 25℃were optimal conditions to reach the As removal *** aqueous SO4(-Ⅱ)and Cl(-Ⅰ)played a synergetic role in the main tooeleite formation together with(Cl(-Ⅰ)-free)ferric arsenite hydroxychloride(FAHC)involving the substitution of AsO_(3)^(3−)for Cl(-Ⅰ)for enhanced As *** competitive complexation among FeH_(2)AsO_(3)^(2+),FeSO_(4)^(+)and FeCl^(2+)complexes was the main mechanism for the maximum As(Ⅲ)precipitation at the SO4(-Ⅱ)/Cl(-I)molar ratio of 1:*** As(Ⅲ)immobilization at high temperature with increased Fe(Ⅲ)hydrolysis was due to the formation of As(Ⅲ)-bearing ferrihydrite with the relatively high Fe/As molar ratio at acidic pH.

关键词： High-As(III) Sulfate Chlorine ion Removal Complex

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