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2024 International Conference on Image Processing and Artificial Intelligence, ICIPAl 2024

作者： Ding, Chenyu Wang, Zhizhe Luo, Jun Zhao, Shenglei Zhao, Yue Xidian University Xi’an China China Electronic Product Reliability and Environmental Testing Research Institute Guangzhou China Science and Technology on Reliability Physics and Application of Electronic Component Laboratory China

ISBN: (纸本)9781510681514

The surface identification of integrated circuit (IC) has not been standardized yet, and the task of detecting IC logos is often carried out manually, which is prone to high subjectivity and low efficiency. Traditional machine learning methods still rely on prior knowledge and handcrafted features, which yield unsatisfactory performance. In order to improve the efficiency of logo detection tasks, this paper constructs a dataset for IC appearance and proposes a deep learning algorithm based on the latest single-stage object detection neural network YOLOv8. By introducing Global Attention Mechanism(GAM) into YOLOv8, the information diffusion is effectively reduced, and the deep information is extracted, allowing the neural network to learn more representative features and further improve the average precision. © 2024 SPIE.

关键词： Object detection

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Dendrimer-induced synthesis of porous organosilica capsules for enzyme encapsulation

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Frontiers of Chemical science and engineering 2024年第4期18卷 41-48页

作者： Ziyi Chu Boyu Zhang Zhenhua Wu Jiaxu Zhang Yiran Cheng Xueying Wang Jiafu Shi Zhongyi Jiang School of Environmental Science&Engineering Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Organic matter-induced mineralization is a green and versatile method for synthesizing hybrid nanostructured materials,where the material properties are mainly influenced by the species of natural biomolecules,linear synthetic polymer,or small molecules,limiting their ***,we adopted dendrimer poly(amidoamine)(PAMAM)as the inducer to synthesize organosilica-PAMAM network(OSPN)capsules for mannose isomerase(MIase)encapsulation based on a hard-templating *** structure of OSPN capsules can be precisely regulated by adjusting the molecular weight and concentration of PAMAM,thereby demonstrating a substantial impact on the kinetic behavior of the MIase@OSPN *** MIase@OSPN system was used for catalytic production of mannose from Dfructose.A mannose yield of 22.24% was obtained,which is higher than that of MIase in organosilica network capsules and similar to that of the free *** overall catalytic efficiency(kcat/Km)of the MIase@OSPN system for the substrate D-fructose was up to 0.556 s^(-1)·mmol^(-1)·***,the MIase@OSPN system showed excellent stability and recyclability,maintaining more than 50% of the yield even after 12 cycles.

关键词： enzyme immobilization enzyme catalysis organosilica networks capsules sugar biosynthesis

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Source apportionment and specific-source-site risk of quinolone antibiotics for effluent-receiving urban rivers and groundwater in a city, China

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Journal of environmental sciences 2024年第10期144卷 185-198页

作者： Yu Zhao Yuanmeng Song Lulu Zhang Bo Zhao Mengqi Lu Jiansheng Cui Wenzhong Tang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of ScienceBeijing 100085China College of Environment Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050000China University of Chinese Academy of Sciences Beijing 100049China

There is a large surface-groundwater exchange downstream ofwastewater treatment plants(WWTPs),and antibiotics upstream may influence sites downstream of ***,samples from 9 effluent-receiving urban rivers(ERURs)and 12 groundwater sites were collected in Shijiazhuang City in December 2020 and April *** ERURs,8 out of 13 target quinolone antibiotics(QNs)were detected,and the total concentration of QNs in December and April were 100.6-4,398 ng/L and 8.02–2,476 ng/L,*** groundwater,all target QNs were detected,and the total QNs concentration was 1.09–23.03 ng/L for December and 4.54–170.3 ng/L for *** distribution of QNs was dissimilar between ERURs and *** QN concentrations were weakly correlated with land use types in the *** results of a positive matrix factorization model(PMF)indicated four potential sources of QNs in both ERURs and groundwater,and WWTP effluents were the main source of *** December to April,the contribution of WWTP effluents and agricultural emissions increased,while livestock activities *** value decomposition(SVD)results showed that the spatial variation of most QNs was mainly contributed by sites downstream(7.09%-88.86%)of ***,a new method that combined the results of SVD and PMF was developed for a specific-source-site risk quotient(SRQ),and the SRQ for QNs was at high level,especially for the sites downstream of *** temporal variation,the SRQ for WWTP effluents,aquaculture,and agricultural emissions ***,in order to control the antibiotic pollution,more attention should be paid to WWTP effluents,aquaculture,and agricultural emission sources for the benefit of sites downstream of WWTPs.

关键词： Source apportionment Singular value decomposition Positive matrix factorization model Quinolone antibiotics(QNs) Specific-source-site risk quotient(SRQ) WWTP effluents

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Research on Internal Defect Detection Algorithm of Ultrasonic Image Based on Attention Mechanism 5

Research on Internal Defect Detection Algorithm of Ultrasoni...

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2023 5th International Conference on Artificial Intelligence and Computer Applications, ICAICA 2023

作者： Zhao, Yue Zhang, Qiuzhen Luo, Jun China Electronic Product Reliability and Environmental Testing Research Institute Science and Technology on Reliability Physics and Application of Electronic Component Laboratory Guangzhou China

ISBN: (纸本)9798350323313

Scanning Acoustic Microscope is a nondestructive and effective technology to detect the internal defects of chips, which is widely used in IC screening. However, at present, the ultrasonic defect detection mainly focuses on traditional visual inspection, which has the disadvantages of low efficiency and high false detection rate. To solve these problems, this paper proposes an ultrasonic defect YOLO detection algorithm by introducing and comparing three common attention modules (SENet, CBAM and ECANet). On the basis of YOLO-v4-tiny model, the attention module is embedded in the feature extraction backbone network to distinguish the importance of different channels in the feature map, strengthen the key features of the target area, and improve the detection accuracy of the network. The experimental results show that the algorithm based on CBAM attention module has better detection accuracy and efficiency. © 2023 IEEE.

关键词： Efficiency

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A NOVEL PROBABILISTIC RISK ANALYSIS APPROACH FOR ENGINE BIRD STRIKE ISSUE APPLIED ON THE AIRWORTHINESS REGULATIONS 14

A NOVEL PROBABILISTIC RISK ANALYSIS APPROACH FOR ENGINE BIRD...

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14th International Conference on Quality, reliability, Risk, Maintenance, and Safety engineering, QR2MSE 2024

作者： Chen, Kenlun Yang, Xuehe Zhu, Jiawei China Electronic Product Reliability and Environmental Testing Research Institute China CEPREI Laboratory Guangzhou China The Ministry of Industry and Information Technology Key Laboratory of Quality and Reliability Engineering Technology of Civil Aircraft and Aero-Engine Guangzhou China Guangdong Provincial Key Laboratory of Electronic Information Products Reliability Technology Guangzhou China

ISBN: (纸本)9781837242672

Bird strikes on aero-engines are a significant factor contributing to aircraft accidents. Airworthiness regulations in various countries impose specific requirements on engine resistance to bird strikes. Currently, the International Civil Aviation Organization (ICAO), the Federal Aviation Administration (FAA) of the United States, and the Civil Aviation Administration of China (CAAC) categorize the severity levels of bird species that pose threats to flight safety based on their weight within the relevant regions. Consequently, this thesis introduces a probabilistic risk assessment method based on bird strike severity levels. Utilizing bird strike data from U.S. civil aviation engines as an example, this study assesses the risk posed by birds of different severity levels in U.S. civil aviation. Through this method, the bird strike risk associated with each weight range specified in FAR 33.76 was quantitatively evaluated. This evaluation confirmed that the risk predictions for large birds in current airworthiness regulations align with the intended safety objectives. © The Institution of engineering & technology 2024.

关键词： Aircraft accidents

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Unintentional emissions of polychlorinated naphthalenes in China:Sources,composition,and historical trends

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Journal of environmental sciences 2025年第2期148卷 221-229页

作者： Ye Huang Lin Huang Ying Li Nazupar Sidikjan Yunshan Zhang Yan Chen Yangmin Chen Ye Li Wei Du Long Chen YanWu Shanshan Zhang Jing Yang Wenjun Meng Guofeng Shen Min Liu Shu Tao Key Laboratory of Geographic Information Science of the Ministry of Education School of Geographic SciencesEast China Normal UniversityShanghai 200241China Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science&EngineeringKunming University of Science&TechnologyKunming 650500China Laboratory of Earth Surface Processes College of Urban and Environmental SciencePeking UniversityBeijing 100871China

Polychlorinated naphthalenes(PCNs)are detrimental to human health and the *** the commercial production of PCNs banned,unintentional releases have emerged as a significant environmental ***,relevant information is still *** this study,provincial emissions for eight PCNs homologues from 37 sources in the Chinese mainland during the period of 1960-2019 were estimated based on a source-specific and time-varying emission factor *** results showed that the total PCNs emissions in 2019 reached 757.0 kg with Hebei ranked at the top among all the provinces and iron&steel industry as the biggest ***-chlorinated PCNs comprised 90%of emissions by mass,while highly chlorinated PCNs dominated in terms of toxicity,highlighting divergent priorities for mitigating emissions and safeguarding human *** emissions showed an overall upward trend from 1960 to 2019 driven by emission increase from iron&steel industry in terms of source,and from North China and East China in terms of geographic ***-capita emissions followed an inverted U-shaped environmental Kuznets curvewhile emission intensities decreased with increasing per-capita Gross Domestic Product(GDP)following a nearly linear pattern when log-transformed.

关键词： PCNs Emission inventory Emission factor Composition profile Emission intensity Chinese mainland

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Adsorption of typical gasoline vapor emitted from service stations by commercial activated carbon:static/dynamic adsorption and kinetics simulation

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Frontiers of environmental science & engineering 2025年第3期19卷 87-98页

作者： Wei Hu Quanming Liang Dan Lu Beibei Li Biqi Ren Qingye Luan Jia Liu Wenjun Liang Yuhu Huang National Engineering Research Center of Urban Environmental Pollution Control Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Control Technology and ApplicationsBeijing Municipal Research Institute of Eco-Environmental ProtectionBeijing 100037China Key Laboratory of Beijing on Regional Air Pollution Control Faculty of Environment and LifeBeijing University of TechnologyBeijing 100124China Institute of Urban Safety and Environmental Science Beijing Academy of Science and TechnologyBeijing 100054China

Gasoline vapor emissions from service stations significantly affect urban *** the research on the mechanisms and effectiveness of gasoline vapor removal is limited,this study innovatively investigates the static and dynamic adsorption of xylene—a typical gasoline vapor and one of the most active secondary organic aerosol(SOA)species—by commercial activated carbon(AC).The results showed that the saturation static adsorption capacity(Q_(e))of 12 ACs varied from 0.9 to 870.7 mg/g,which correlated with the specific surface area(SSA)and pore *** them,11#and 12#ACs were identified as the most effective adsorbents for typical gasoline vapor *** maximum dynamic Q_(e) increased from 301.5 to 414.3 mg/g when the initial xylene concentration rose from 918 to 2008 mg/m^(3) for 11#AC,and from 201.4 to 406.2 mg/g when the initial xylene concentration increased from 589 to 2120 mg/m^(3) for 12#*** findings implied a direct correlation between higher initial xylene concentrations and greater dynamic Q_(e) values,with static Q_(e) values surpassing dynamic *** adsorption kinetics simulation were analyzed by the pseudo-first-order(PFO)and pseudo-second-order(PSO)*** kinetics results demonstrated that the PFO was more effective in characterizing the adsorption of xylene onto ACs(R2>0.989),indicating that the adsorption of typical gasoline vapor by ACs primarily involves physical *** findings of static/dynamic adsorption and kinetics provide valuable guidance for practical applications of gasoline vapor removal in service stations.

关键词： Activated carbon Gasoline vapor Xylene Dynamic adsorption Breakthrough curve

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Preparation and Thermal Properties of a Novel Modified Ammonium Alum/Expanded Graphite Composite Phase Change Material

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Journal of Thermal science 2023年第6期32卷 2093-2103页

作者： YIN Shaowu HAN Jiawei ZHANG Chao KANG Peng TONG Lige WANG Li School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of Energy Saving and Emission Reduction University of Science and Technology BeijingBeijing100083China

Thermal energy storage(TES)using phase change materials(PCMs)is a powerful solution to the improvement of energy *** application of Ammonium alum(A-alum,NH4Al(SO_(4))_(2)·12H_(2)O)in the latent thermal energy storage(LTES)systems is hampered due to its high supercooling and low thermal *** this work,modified A-alum(M-PCM)containing different nucleating agents was prepared and further adsorbed in expanded graphite(EG)to obtain composite phase change material(CPCM)to overcome the disadvantages of *** properties,thermal cycle stability,microstructure and chemical compatibility of CPCM were characterized by differential scanning calorimetry,thermal constant analysis,scanning electron microscopy,X-ray diffraction and Fourier transform infrared *** cold rewarming phenomenon of CPCM was established and *** showed that the latent heat and melting point of CPCM were 187.22 J/g and 91.54℃,*** supercooling of CPCM decreased by 9.61℃,and thermal conductivity increased by 27 times compared with pure *** storage and release tests indicated that 2 wt%calcium chloride dihydrate(CCD,CaCl_(2)·2H_(2)O)was the optimum nucleating agent for *** result of TG and 30 thermal cycles revealed that CPCM exhibited favorable thermal stability and reliability during the operating *** prepared modified A-alum/EG CPCM has a promising application prospect for LTES.

关键词： composite phase change material thermal property ammonium alum expanded graphite supercooling thermal conductivity

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Comprehensive study on the spatial distribution of heavy metals and their environmental risks in high-sulfur coal gangue dumps in China

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Journal of environmental sciences 2024年第2期136卷 486-497页

作者： Yingbo Dong Huan Lu Hai Lin School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants Beijing 100083China

The accumulation of coal gangue(CG)from coal mining is an important source of heavy metals(HMs)in *** spatial distribution and environment risk assessment are extremely important for the management and remediation of *** soil samples were collected from the high-sulfur CG site in northern China and analyzed for six *** results showed that the soil was heavily contaminated by Mn,Cr and Ni based on the Nemerow index,and posed seriously ecological risk depended on the geo-accumulation index,potential ecological risk index and risk assessment *** semi-variogram model and ordinary kriging interpolation accurately portrayed the spatial distribution of ***,Mn,and Cr were distributed by band diffusion,Ni was distributed by core,the distribution of Cu had obvious patchiness and Zn was more *** spatial autocorrelation indicated that all HMs had strong spatial *** BCR sequential extraction was employed to qualify the geochemical fractions of *** data indicated that Fe and Cr were dominated by residual fraction;Cu,Ni and Zn were dominated by reducible and oxidizable fractions;Mn was dominated by reducible and acid-extractable(25.38%-44.67%)*** correlation analysis showed that pH was the main control factor affecting the non-residue fractions of ***,acid production from high sulfur CG reduced soil pH by 2-3,which indirectly promoted the activity of ***,the conceptual model of HMs contamination at the CG site was proposed,which can be useful for the development of ecological remediation strategies.

关键词： High-sulfur coal gangue Soil contamination Heavy metals Spatial distribution Geochemical fractions Risk assessment

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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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