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An orthogonal dual-regulation strategy for sensitive biosensing applications

National Science Review 2022年第9期9卷 246-259页

作者： Xian Yang Jinhua Wang Zhongfeng Gao Weiqi Zhang Hai Zhu Yongjun Song Quan Wang Mingjie Liu Lei Jiang Yu Huang Fan Xia State Key Laboratory of Biogeology and Environmental Geology Engineering Research Center of Nano-Geomaterials of Ministry of EducationFaculty of Material Science and ChemistryChina University of Geosciences State Grid Integrated Energy Service Group CO.LTD. State Key Laboratory of Proteomics Beijing Proteome Research Center National Center for Protein Sciences(Beijing)Beijing Institute of Lifeomics Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers College of Chemistry and Chemical Engineering Linyi University Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of the Ministry of Education School of Chemistry and EnvironmentBeihang University Zhejiang Institute China University of Geosciences

Biosensing systems based on controllable motion behaviors of droplets have attracted extensive attention,but still face challenges of insufficient sensitivity and uncontrollable dynamic range due to imprecise manipulation of droplet motion on the ***,we report an orthogonal dual-regulation strategy for precise motion control of droplets and we demonstrate its utility as a sensitive sensing system with controllable dynamic ranges of sensing for adenosine triphosphate,miRNA,thrombin and kanamycin,as well as discrimination of five kinds of D *** endowed a DNA-contained bio-droplet sliding on a lubricant-infused structural surface with micro-grooves to separately adjust the resistance from liquid phase and solid *** resistance from liquid phase mainly depended on hydrophobic interaction between DNA and lubricant,which can be finely tuned by different DNA's average chain ***,the resistance from solid surface was determined by the energy barrier from the periodic micro-grooves,which can be adjusted by varying the droplet's sliding direction on the *** hydrophobic interaction is conformed to be orthogonal to the micro-grooves' anisotropic resistance by three different *** orthogonal dual-regulation strategy thus demonstrated its ability to precisely control bio-droplets' motion behaviors and sensitive detection with adjustable dynamic ranges for various *** dual-regulation strategy will provide significant insights for super-wettable biosensors,visual inspection and beyond.

关键词： motion behavior sensitive detection dynamic range hydrophobic interaction anisotropic resistance

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Recovery and Reuse of Spent Lithium-Ion Batteries as Catalysts for Low-Temperature Nh3-Scr

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SSRN 2023年

作者： Wu, Na Li, Mengtao Zhang, Qiao Xue, Gang Wang, Yaping Gong, Cairong Key Laboratory of Special Functional Materials for Ecological Environment and Information Hebei University of Technology Ministry of Education Tianjin300130 China School of Materials Science and Engineering Hebei University of Technology Tianjin300130 China School of Materials Science and Engineering Tianjin University Tianjin300072 China

The wide application of lithium-ion batteries (LIBs) for electric vehicles forebodes the decommissioning tide of spent LIBs. Therefore, recycling valuable element from spent LIBs are becoming urgent to minimize the impact on the environment and supply chain of battery manufacturers. In this work, we propose a new and high-efficiency strategy to extract valuable elements from ternary cathode materials and synthesize a porous NiCoMnOx catalyst for the low-temperature NH3-selective catalyst reduction (NH3-SCR) reaction through acid leaching, hydrothermal process, and heat treatment. The as-prepared NiCoMnOx catalyst presents a porous fluffy foam structure with abundant oxygen defects, ensuring sufficient catalytic active sites. As a result, the NiCoMnOx catalyst exhibits optimal catalytic activity with over 90% NOx conversion in the temperature range of 110~230 °C, which is wider than the temperature range of 155~210 °C for the catalysts prepared from metal salts. Meanwhile, NiCoMnOx catalyst also shows the better catalytic stability. This work provides a promising strategy to recycle spent LIBs to low-temperature NH3-SCR catalysts. © 2023, The Authors. All rights reserved.

关键词： Cathodes

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An Innovative Hybrid Air-Cooled and Liquid-Cooled System for Condensation Prevention

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SSRN 2024年

作者： Zhang, Bixiao Yuan, Nenglin Kong, Benben Zou, Yitao Shi, Hong College of Energy & Power Engineering Jiangsu University of Science and Technology 2 Mengxi Jingkou Zhenjiang212003 China Key Laboratory of Aircraft Environment Control and Life Support MIIT Nanjing University of Aeronautics & Astronautics 29 Yudao Street Nanjing210016 China

Addressing the issue of condensation susceptibility in lithium battery thermal management systems operating in high-humidity environments, this paper proposes an innovative hybrid air and liquid cooling system. This system incorporates a specially designed return air structure to enhance the thermal stability and safety of the batteries. Computational fluid dynamics (CFD) simulations were utilized to analyze the thermal management performance under varying airflow velocities and temperature conditions, leading to the optimization of the return air structure to mitigate condensation. The research findings reveal that the proposed hybrid system reduces the condensation area by approximately 39.68% at an airflow velocity of 0.5 m/s compared to traditional liquid cooling systems. Furthermore, the introduction of flow deflectors significantly improves the anti-condensation effect in high-humidity environments, achieving the objective of dew-free operation throughout the entire area. Lastly, employing the entropy weight-TOPSIS method and nonlinear surface fitting, a comprehensive evaluation of multiple schemes was conducted regarding heat dissipation, anti-condensation measures, and energy consumption. It was determined that when Vair = 1.29 m/s and Vwater = 0.22 m/s, the thermal management system of the battery module exhibits optimal comprehensive performance, with corresponding values of T, Tmax, Enair, and Enwater being 3.98 K, 302.36 K, 0.15806 J, and 0.19203 J. The outcomes of this paper not only enhance the thermal management efficiency of lithium-ion batteries in high-humidity environments but also offer practical solutions for electric vehicles and other fields requiring efficient thermal management, demonstrating significant engineering application value. © 2024, The Authors. All rights reserved.

关键词： Condensation

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Assessment of occurrence, partitioning and ecological risk for 144 steroid hormones in Taihu Lake using UPLC-MS/MS with machine learning model

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Chemosphere 2024年 354卷 141598页

作者： Zhao, Li Wang, Chao Sun, Fuhong Liao, Haiqing Chang, Hong Jia, Xudong Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Sciences & Engineering Beijing Forestry University Beijing100083 China China CDC Key Laboratory of Environment and Human Health National Institute of Environmental Health Chinese Center for Disease Control and Prevention Beijing100021 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China NHC Key Laboratory of Food Safety Risk Assessment China National Center for Food Safety Risk Assessment Beijing100021 China

Steroid hormones (SHs) have attracted mounting attention due to their endocrine-disrupting effects on humans and aquatic organisms. However, the lack of analytical methods and toxicity data for a large number of SHs has limited the effective management of SH contamination in the water-sediment systems. In this study, we developed a highly sensitive analytical method for the simultaneous quantification of 144 SHs to investigate their occurrence, spatial distribution and partitioning in the water and sediment in Taihu Lake. The results showed that the total concentrations of SHs in water and sediment were 366.88–998.23 ng/L (mean: 612.84 ng/L) and 17.46–150.20 ng/g (mean: 63.41 ng/g), respectively. The spatial distribution of SHs in Taihu Lake might be simultaneously influenced by the pollution sources, lake hydrodynamics, and sediment properties. The sediment-water partitioning result implied that 28 SHs were in dynamic equilibrium at the water-water interface. In addition, 22 and 12 SHs tended to spread to water and settle into sediment, respectively. To assess the ecological risk of all SHs, a robust random forest model (R2 = 0.801) was developed to predict the acute toxicity of SHs for which toxicity data were not available from publications. Risk assessment showed that SHs posed a high ecological risk throughout Taihu Lake, with the highest risk in the northwestern areas. Estrone, 17β-estradiol and 17α-ethynylestradiol were the dominant risk contributors and were therefore recommended as the priority SHs in Taihu Lake. This work provided a valuable dataset for Taihu Lake, which would help to provide guidance and suggestions for future studies and be useful for the government to develop the mitigation and management measures. © 2024 Elsevier Ltd

关键词： Risk assessment

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Quantifying Electric Vehicle Energy Consumption Benefits Across Cities: A Transferable Vehicle Energy Consumption Evaluation Framework

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SSRN 2024年

作者： Jia, Zhenyu Cao, Zeping Yin, Jiawei Wu, Lin Wei, Ning Zhang, Yanjie Jiang, Zhiwen Zhang, Qijun Mao, Hongjun Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control College of Environmental Science and Engineering Nankai University Tianjin300071 China Jinchuan Group Information and Automation Engineering Co. Ltd. Jinchang737100 China Tianjin Youmei Environment Technology Ltd. Tianjin300380 China

Vehicle electrification is an important approach worldwide for energy saving and emission reduction. However, the absence of a unified assessment method complicates the accurate quantification of energy consumption benefits from Electric Vehicles (EVs), including Plug-in Hybrid Electric Vehicles (PHEVs) and Battery Electric Vehicles (BEVs). To address this issue, the study introduces a framework for evaluating these benefits across regions based on driving cycle (DC) database and machine learning method. Tianjin and Xining, two typical cities, were used as case studies. The DC databases were iteratively generated using a 3-D Markov chain method, capturing the main driving characteristics of two cities. Energy consumption models for Internal Combustion Engine Vehicles (ICEVs), BEVs, and PHEVs achieved R2 of 0.92, 0.83, and 0.74 on the test set, respectively. The results show that EVs can achieve energy consumption benefits ranging from 16.4 % to 77.8 %. Promoting EVs in both cities yields significant energy efficiency benefits, with BEVs offering more in Tianjin, while PHEVs offer greater benefits in Xining. The model interpretation indicates that the difference stems from Tianjin's more frequent and intense deceleration and Xining's more varied terrain. The framework standardizes energy consumption assessment across vehicle types, aiding policymakers in crafting regional EVs promotion plans. © 2024, The Authors. All rights reserved.

关键词： Plug-in hybrid vehicles

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An object tracking method to track maintenance objects by object detection based on deep learning in induced maintenance environment 30th

An object tracking method to track maintenance objects by ob...

引用

30th European Safety and reliability Conference, ESREL 2020 and 15th Probabilistic Safety Assessment and Management Conference, PSAM15 2020

作者： Liang, Chuansheng Lv, Chuan State Key Laboratory of Virtual Reality Technology and Systems 37 Xueyuan Road Beijing China School of Reliability and Systems Engineering Beihang University 37 Xueyuan Road Beijing China State Key Science and Technology Laboratory on Reliability and Environmental Engineering 37 Xueyuan Road Beijing China

ISBN: (纸本)9789811485930

Induced maintenance means that the surrounding scene and the maintenance object state change are perceived through natural interaction means, and the digital maintenance instruction information is superimposed on the physical object and the process in real time so that the person can obtain the operation guidance. However, in the augmented reality environment, there are few researches on application object detection technology in the field of induced maintenance. Therefore, this paper proposes a process for object detection and localization of induced maintenance based on the yolov3(you only look once)-slim model. For the problem that the deep convolutional neural network is deployed on the mobile side and the cost is too high, a pruning method for the batch normalization layer is adopted(Zoph et al. 2019). After the object is recognized, it can only obtain the two-dimensional coordinate information in the image. The coordinates obtained in the two-dimensional pixel coordinate system are then converted into three-dimensional coordinates in the camera coordinate system through the method of solving the PNP(Perspective N Points) problem(Moreno-Noguer, Lepetit, and Fua 2007). The experimental results show that the recognition rate of the repair parts based on the deep neural network can reach 90% of the mean average precision. The average recognition speed is less than 300 millisecond per frame, meeting the accuracy and interactivity requirements of the AR-induced maintenance system. © ESREL2020-PSAM15 *** by Research Publishing, Singapore.

关键词： Object detection

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FORMALIZATION OF ROBOT COLLISION DETECTION METHOD BASED ON CONFORMAL GEOMETRIC ALGEBRA

arXiv

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arXiv 2023年

作者： Wu, Yingjie Wang, Guohui Chen, Shanyan Shi, Zhiping Guan, Yong Li, Ximeng Beijing Engineering Research Center of High Reliable Embedded System Capital Normal University Beijing China Beijing Key Laboratory of Electronic System Reliability and Prognostics College of Information Engineering Capital Normal University Beijing China International Science and Technology Cooperation Base of Electronic System Reliability and Mathematical Interdisciplinary Capital Normal University Beijing China Beijing Advanced Innovation Center for Imaging Theory and Technology Capital Normal University Beijing China

Cooperative robots can significantly assist people in their productive activities, improving the quality of their works. Collision detection is vital to ensure the safe and stable operation of cooperative robots in productive activities. As an advanced geometric language, conformal geometric algebra can simplify the construction of the robot collision model and the calculation of collision distance. Compared with the formal method based on conformal geometric algebra, the traditional method may have some defects which are difficult to find in the modelling and calculation. We use the formal method based on conformal geometric algebra to study the collision detection problem of cooperative robots. This paper builds formal models of geometric primitives and the robot body based on the conformal geometric algebra library in HOL Light. We analyse the shortest distance between geometric primitives and prove their collision determination conditions. Based on the above contents, we construct a formal verification framework for the robot collision detection method. By the end of this paper, we apply the proposed framework to collision detection between two single-arm industrial cooperative robots. The flexibility and reliability of the proposed framework are verified by constructing a general collision model and a special collision model for two single-arm industrial cooperative robots. Copyright © 2023, The Authors. All rights reserved.

关键词： Geometry

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Metal–Organic Frameworks-Derived Porous Yolk–Shell MoP/Cu_(3)P@carbon Microcages as High-Performance Anodes for Sodium-Ion Batteries

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Energy & environmental Materials 2020年第4期3卷 529-534页

作者： Yanyou Yin Yu Zhang Nannan Liu Lishuang Fan Naiqing Zhang State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of TechnologyHarbin 150001China

Transitional metal phosphides(TMPs)anode materials usually have large volume change and weak diffusion kinetics,leading to poor cycle *** TMPs with conductive carbon matrix has been widely used to boost sodium ***,it still needs to make efforts in the rational and facile design of nano/micro-structural TMPs/carbon hybrid anode ***,a MOFs-derived strategy is developed to synthesize porous yolk–shell Mo P/Cu_(3)P@carbon microcages(Mo P/Cu_(3)P@C)through in situ and confined phosphidation reaction as a high-performance sodium-ion batteries *** yolk–shell structure can offer adequate internal space to buffer the large volume expansion,shorten diffusion distance,and create more active sites of Na+.Especially,the Cu nanoparticles generated from Cu_(3)P have remarkable electronic conductivity of 5.73107S m-1(the second most conductive metal)to benefit transporting *** the introduction of Mo(Mo P has high theoretical capacity of 633 mA h g^(-1))can enhance the reversible capacity of the whole anode ***,these porous yolk–shell Mo P/Cu_(3)P@carbon microcages possess excellent reversible capacity of 307.8 mA h g^(-1)at 1.0 A g^(-1)and extraordinary cycle stability of 132.1 m A h g^(-1)at 5.0 A g^(-1)even after 6000 cycles.

关键词： sodium-ion batteries metal–organic frameworks MoP Cu_(3)P yolk–shell

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Cr(Vi) Removal by Sodium Borohydride in the Presence of Small Molecular Organic Ligand: Involvement of Citrate and Edta Chemical Transformation

SSRN

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SSRN 2023年

作者： Njoya, Ousmanou Wang, Zhehao Shen, Jimin Zhao, Shengxin Tan, Qiang Qu, Yanfeng Chen, Zhonglin State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China Institute of Agricultural Research for Development P.O. Box 415 Garoua Cameroon School of Food Engineering Harbin University Harbin150086 China

The use of chemical reduction to convert highly toxic Cr(VI) in water into low toxic and weakly mobile Cr(III) is considered the most feasible. Carboxylic acids (CAs) as clean regent widely coexists in multiples types of wastewater with Cr(VI). The influence of coexisting CAs during Cr(VI) reduction process should be widely studied. In this investigation, the role of coexisting CAs including Citrate and EDTA in Cr(VI) reduction was clarified. The results indicated that Citrate and EDTA could significantly promote Cr(VI) reduction by NaBH4. EDTA had a better promoting effect, exhibiting that 10 mM EDTA obtained similar 90.31% and 87.67% of Cr(VI) reduction at initial pH 4 and 5, respectively, reducing the requirement for low initial pH for Cr(VI) reduction. Regarding the improvement mechanism of Cr(VI) by NaBH4, Citrate and EDTA did not directly transfer their electrons to Cr(VI), while the addition of BH4- resulted in their degradation or transformation. Citrate and EDTA had two effects on Cr(VI) reduction by NaBH4. On the one hand, they provided a strong buffering effect, providing H+ to the reaction system for resisting OH- from NaBH4 self-hydrolysis and alleviate H+ requirement for Cr(VI) reduction;On the other hand, it might be attributed to the fact that Citrate or EDTA could eliminate some of hydrogen radical (•H) producing from homolysis of B–H bonds induced by Cr(VI), which exhibited a slight inhibitory of Cr(VI) reduction due to the competition with Cr(VI) for •H. However, the promoting effect was greater than the inhibitory effect. The findings provided new insights into Cr(VI) reduction by NaBH4 mediated by CAs, which is of interest for systems engineered for Cr(VI) remediation. © 2023, The Authors. All rights reserved.

关键词： Hydrogen bonds

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Exploring Defect Behavior in Helium-Irradiated Single-Crystal and Nano-Engineered 3C-SiC at 800°C: A Synergy of Experimental and Simulation Techniques

SSRN

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SSRN 2024年

作者： Wang, Zhiqiang Zhang, Limin AlMotasem, Ahmed Tamer Li, Bingsheng Polcar, Tomas Daghbouj, Nabil School of Nuclear Science and Technology Lanzhou University Gansu Lanzhou China Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Technicka ´ 2 Prague 6160 00 Czech Republic State Key Laboratory for Environment-friendly Energy Materials Southwest University and Technology Sichuan Mianyang621010 China

In this study, sc-and nc-3C-SiC samples were subjected to 30 keV He ion irradiation across various doses while maintaining a temperature 800°C. Employing techniques including Raman spectroscopy, TEM and nanoindentation, the alterations in microstructure and hardness resulting from He irradiation with various fluences were *** sc-SiC, irradiation prompted the formation of He platelets, resulting in a hardness increase of 6 GPa. In contrast, nc-SiC, characterized by a higher stacking fault density, exhibited the formation of bubbles, primarily at GBs, with fewer occurrences within the grain interior, leading to a hardness increase of 1 GPa. Notably, in both sc- and nc-SiC, hardness reached saturation and subsequently stabilized or declined with increasing *** MD cascade simulations, we discerned that various planar defects do not uniformly contribute to enhancing radiation resistance. For example, ISF and twins in SiC played a substantial role in altering defect density and configurations, thereby facilitating point defect annihilation. Conversely, ESF and Σ3 grain boundaries had a limited impact on defect production during a *** of cluster diffusivity revealed an accelerated movement of He-vacancy towards Gbs compared to other planar defects. Moreover, the scarcity of point defects and constrained mobility of He towards stacking faults in nc-SiC elucidated the marked tendency of He to form platelets in ***, our findings established a correlation between the calculated indentation hardness and the geometry of He defects, consistent with experimental results from nanoindentation. These results significantly contribute to ongoing efforts to design SiC materials with heightened radiation tolerance. © 2024, The Authors. All rights reserved.

关键词： Silicon carbide

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