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Molecularly imprinted polymer/graphene oxide modified glassy carbon electrode for selective detection of sulfanilamide

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Progress in Natural Science:Materials International 2017年第3期27卷 374-379页

作者： Xiaobing Wei Xinhua Xu Wen Qi Ying Wu Lihong Wang School of Materials Science and engineering Tianjin University Analysis and testing Center Shandong University of Technology Beijing Key Laboratory of Energy Nanomaterials Advance Technology & Materials CoLtdChina Iron & steel Research Institute Group School of Agricultural and Food engineering Shandong University of Technology

A novel sensitive electrochemical sensor based on a glassy carbon electrode（GCE） modified with molecularly imprinted polymer（MIP） and grapheme oxide（GO） was *** MIP/GO material was prepared by precipitation polymerization in the presence of sulfanilamide as template *** MIP/GO based electrochemical sensor was characterized using scanning electron microscopy（SEM）,cyclic voltammetry（CV）,electrochemical impedance spectroscopy（EIS） and square wave voltammetry（SWV）.The results indicated that the sensor exhibited good affinity and excellent electrochemical response for *** optimized conditions,the oxidation peak current intensity of sulfanilamide showed two linear dynamic ranges from 10 to 1000 ng mL;,and the standard deviation was less than 5% using SWV *** sensor displays good stability,reproducibility,and high *** can be further applied to quantify sulfanilamide in milk.

关键词： Graphene oxide Sulfanilamide Molecularly imprinted polymer Electrochemical detection

The Pairing Analysis Improvement of Magnetized Structure in Electromagnetic Bulging Process in Case of Tube with Field Shaper

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Journal of Electromagnetic Analysis and Applications 2024年第4期16卷 43-67页

作者： Blaise Kevine Lenz Soronga Zhanqian Zhan Jing Liu Jonas Asamoah Mohamed Bangali Bangura Matala Makiese N’kodia Kambani Chrionie Md Jobayer Hossain Yongdong Chen Program Debugging and Design Department Guangdong Lyric Robot Automation Co. Ltd Huizhou China Electrical and Automation Department China Three Gorges University Yichang China Electronic Department Power Electronic Research Center University of Kent Giles Ln Canterbury UK Program Debugging Department Guangdong Lyric Robot Automation Co. Ltd. Huizhou China Electrical and Computer engineering Department South China University of Technology Guangzhou China World Standardization Certification and Testing Group (Shenzhen) Co. Ltd. Shenzhen China Electrical engineering-Power System Mapon University Kindu Democratic Republic of Congo Department of Economy Managment School of Management Computer and Telecomunication Rabbat Marocco Materials Visual Calibration Department Guangdong Lyric Robot Automation Co. Ltd. Huizhou China Program Design Department Guangdong Lyric Robot Automation Co. Ltd. Huizhou China

In the current practical science, the accuracy in the formability of metal alloys being the goal when using electromagnetic forming (EMF) technology, which is a high-speed processing technology that uses Lorentz forces to achieve plastic deformation of sheet metal;according to the previous analysis, the results have shown that in most cases, the Lorentz force acting on the workpiece (metal) is not uniform, there are uneven axial deformations of the metal plates which prevent the rapid advancement of today’s technology. In this article, we presented some advanced analyzes which will lead us to improve the technical solution for the problems of non-uniform axial deformations of the metals in the traditional tube electromagnetic forming technology (EMF). A field shaper is used as a practical forming tool to influence the magnetic field and magnetic pressure distribution, thereby improving the forming ability and result during the electromagnetic forming (EMF) process and we see that induced eddy current control is realized by changing the structural parameters of the magnetic field shaper;which improves the strength and controllability of the magnetic force that acts on the workpiece;thereby a greater radial magnetic pressure can be achieved with field shaper than the case without it;the field shaper regulates the electromagnetic force, the distribution of the magnetic pressure decreases, and the uniform force area of the tube increases which effectively enhances the uniform range of the pipe electromagnetic bulging and the electromagnetic induction coupling between the coil and the metallic workpiece is generally required to produce the Lorentz forces. Using COMSOL Multiphysics® simulation software helped us to accurately represent the real world, simulating multiple physical effects that happened in this model during the process.

关键词： Electromagnetic Forming Field Shaper Lorentz Force Magnetic Pressure Distribution

Nickel-free sealing technology for anodic oxidation film of aluminum alloy at room temperature

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Rare Metals 2021年第4期40卷 968-974页

作者： Xue-Long Hao Ning Zhao Hong-Hai Jin Wen Ma Dong-Hui Zhang National Center of Analysis and testing for Nonferrous Metals and Electronic Materials General Research Institute for Nonferrous MetalsBeijing 100088China Guobiao(Beijing)testing&Certification Co. Ltd.Beijing101407China China United testing&Certification Co. Ltd.Beijing101407China School of Materials Science and engineering UNSWSydney 2052Australia Fine Chemicals group Co.Ltd. Taizhou 318020China GRINM Bohan(Beijing)Publisher Co.Ltd. GRINM Group Co.Ltd.Beijing 100088China

Different additives were added into the potassium fluorozirconate solution to prepare different nickelfree sealing reagents,with which the anodic oxidation film of aluminum alloy was sealed at room *** phosphor chromic acid weight loss method was used to evaluate the sealing *** electron scanning microscopy(SEM),the surface and cross-sectional micromorphologies of the anodic oxidation films sealed by different fluorozirconate sealants were *** position and state of zirconium element distribution in the film hole were investigated by the further quantitative and distribution analysis of Zr *** study provides an experimental evidence for the theoretical studies of fluorozirconate-sealed anodic oxidation *** is shown that the fluorozirconate has good sealing effects and has a wide prospect for sealing the aluminum alloy *** products were highly corrosion resistant,and were filled in the openings of the micropores in the oxide film.

关键词： Aluminum alloy Anodic oxidation film Nickel-free sealing Fluorozirconate

3D-printed auxetic-structured intervertebral disc implant for potential treatment of lumbar herniated disc

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生物活性材料(英文) 2023年第2期20卷 528-538页

作者： Yulin Jiang Kun Shi Luonan Zhou Miaomiao He Ce Zhu Jingcheng Wang Jianhua Li Yubao Li Limin Liu Dan Sun Ganjun Feng Yong Yi Li Zhang Analytical and testing Center Department of Orthopedic Surgery and Orthopedic Research InstituteSichuan UniversityChengdu610065China School of Materials Science and engineering Southwest University of Science and TechnologyMianyang621010China Advanced Composite research group(ACRG) School of Mechanical and Aerospace EngineeringQueen’s University BelfastBT95AHUK

In this study,a novel artificial intervertebral disc implant with modified“Bucklicrystal”structure was designed and 3D printed using thermoplastic *** new implant has a unique auxetic structure with building blocks joined“face-to-face”.The accompanied negative Poisson’s ratio enables its excellent energy absorption and stability under *** deformation and load distribution behavior of the implant under various loading conditions(bending,torsion,extension and flexion)has been thoroughly evaluated through finite element *** show that,compared to natural intervertebral disc and conventional 3D implant,our new implant exhibits more effective stress transfer and attenuation under practical loading *** implant’s ability to contract laterally under compression can be potentially used to alleviate the symptoms of lumbar disc ***,the biocompatibility of the implant was assessed in vitro and its ability to restore the physiological function of the disc segment was validated in vivo using an animal model.

关键词： Negative Poisson’s ratio Lumbar disc herniation Finite element simulation

Phase constitutions,growth pattern and mechanical properties of Mg-1.4Gd-1.2Y-xZn-0.15Zr(at%) alloys

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Journal of Rare Earths 2020年第3期38卷 315-323页

作者： Dongjie Chen Yongjun Li Kui Zhang Xinggang Li Minglong Ma Guoliang Shi Jiawei Yuan Ting Li State Key Laboratory of Nonferrous Metals and Process GRINM Group Co.Ltd. Beijing 100088 China GRIMAT engineering Institute Co. Ltd. Beijing 101407 China General research Institute for Nonferrous Metals Beijing 100088 China National Center of Analysis and testing for Nonferrous Metals and Electronic Materials GRINM Group Co.Ltd. Beijing 100088 China Guobiao(Beijing)testing&Certification Co. Ltd. Beijing 100088 China

The effects of minor Zn(0.2 at%,0.4 at%,0.6 at%) on the microstructures and mechanical properties of Mg-1.4 Gd-1.2 Y-0.15 Zr(at%) alloys were systematically *** reveal that increasing Zn content leads to the increase of the intergranular phases and the change of their composition from Mg24(Gd,Y)5 phase and(Mg,Zn)3(Gd,Y) phase to 18 R-LPSO phase and(Mg,Zn)3(Gd,Y) ***24(Gd,Y)5 phase is body-centered cubic structure and shares the same lattice constant with Mg24Y5 while(Mg,Zn)3(Gd,Y)phase is face-centered cubic structure with lattice constant of 0.72 nm,slightly lower than Mg3Gd.18RLPSO structure is identified to be monoclinic with c-axis not strictly vertical to the bottom surface but93.5°.The growth patterns of intergranular phases change from the divorced growth to coupled growth as compositions ***,the mechanical performance improves with Zn rising,ascribed to the decrease of brittle phases at grain boundaries and the increase of LPSO structure phases.

关键词： Mg-Gd-Y-Zn alloy Long period stacking ordered(LPSO) Phase growth Mechanical properties Rare earths

Towards a Service-Oriented Architecture for a Mobile Assistive System with Real-time Environmental Sensing

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Tsinghua Science and Technology 2016年第6期21卷 581-597页

作者： Darpan Triboan Liming Chen Feng Chen Zumin Wang the Context Intelligence and Interaction Research Group (CIIRG) De Montfort University the Department of Information engineering Dalian University

With the growing aging population, age-related diseases have increased considerably over the *** response to these, Ambient Assistive Living（AAL） systems are being developed and are continually evolving to enrich and support independent living. While most researchers investigate robust Activity Recognition（AR）techniques, this paper focuses on some of the architectural challenges of the AAL systems. This work proposes a system architecture that fuses varying software design patterns and integrates readily available hardware devices to create Wireless Sensor Networks（WSNs） for real-time applications. The system architecture brings together the Service-Oriented Architecture（SOA）, semantic web technologies, and other methods to address some of the shortcomings of the preceding system implementations using off-the-shelf and open source components. In order to validate the proposed architecture, a prototype is developed and tested positively to recognize basic user activities in real time. The system provides a base that can be further extended in many areas of AAL systems,including composite AR.

关键词： Activities of Daily Living (ADL) Service-Oriented Architecture (SOA) semantic web ontology modeling web Ontology Language (OWL) Activity Recognition (AR) Smart Homes (SH) Wireless Sensor Networks (WSNs)

Robustness Assessment and Adaptive FDI for Car Engine

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International Journal of Automation and computing 2008年第2期5卷 109-118页

作者： Mahavir Singh Sangha J.Barry Gomm Control Systems research group School of EngineeringLiverpool John Moores University

A new on-line fault detection and isolation （FDI） scheme proposed for engines using an adaptive neural network classifier is evaluated for a wide range of operational modes to check the robustness of the scheme in this paper. The neural classifier is adaptive to cope with the significant parameter uncertainty, disturbances, and environment changes. The developed scheme is capable of diagnosing faults in on-line mode and the FDI for the closed-loop system with can be directly implemented in an on-board crankshaft speed feedback is investigated by diagnosis system （hardware）. The robustness of testing it for a wide range of operational modes including robustness against fixed and sinusoidal throttle angle inputs, change in load, change in an engine parameter, and all these changes occurring at the same time. The evaluations are performed using a mean value engine model （MVEM）, which is a widely used benchmark model for engine control system and FDI system design. The simulation results confirm the robustness of the proposed method for various uncertainties and disturbances.

关键词： On-board fault diagnosis automotive engines adaptive neural networks (ANNs) fault classification robustness assessment

Animal Safety Test of Bacillus thuringiensis BT Protein

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Asian Agricultural research 2024年第2期16卷 31-32,35页

作者： Weimeng NING Dingkuo LIU Fang LIU Yuan LI Xiaowei YANG Zhenguo GUAN Guijun YANG Bo ZHANG Pengcheng HU Dingzheng Xinxing Biotechnology(Tianjin)Co. Ltd.Tianjin 300383China Tianjin Agricultural College Tianjin 300393China Tianjin Key Laboratory of Biological Feed Additives Tianjin 300383China Tianjin Feed Small Molecule Protein engineering Center Tianjin 300383China Tianjin Agricultural Ecological Environment Monitoring and Agricultural Product Quality testing Center Tianjin 300193China

[Objectives]To determine the biological safety of BT protein from Bacillus thuringiensis(Bt)fermentation broth to mammals at high doses.[Methods]Healthy mice were randomly divided into 4 groups with 10 mice in each *** experimental groups were fed with Bt fermentation supernatant at 0.2,0.6 and 1.0 mL/kg,respectively,once a day for 7 consecutive *** blank control group was fed normally without intragastric administration.[Results]There was no significant difference in blood routine and blood biochemical analysis between the experimental group and the control *** intragastric administration,the mice were dissected,and no obvious pathological changes were found;the heart,liver,spleen,lung and kidney were taken to make tissue sections,and no pathological changes were found by microscopic observation.[Conclusions]Mice can tolerate high doses of BT protein from *** fermentation broth.

关键词： Bacillus thuringiensis(Bt) BT protein Biological safety

Development and Integration of a Data Acquisition System for SST-1 Phase-1 Plasma Diagnostics

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Plasma Science and Technology 2012年第11期14卷 1002-1007页

作者： Amit K SRIVASTAVA Manika SHARMA Imran MANSURI Atish SHARMA Tushar RAVAL Subrata PRADHAN SST-1 group Institute for Plasma Research

Long pulse （of the order of 1000 s or more） SST-1 tokamak experiments demand a data acquisition system that is capable of acquiring data from various diagnostics channels without losing useful data （and hence physics information） while avoiding unnecessary generation of a large volume data. SST-1 Phase-1 tokamak operation has been envisaged with data acquisition of several essential diagnostics channels. These channels demand data acquisition at a sampling rate ranging from 1 kilo samples per second （KSPS） to 1 mega samples per second （MSPS）. Considering the technical characteristics and requirements of the diagnostics, a data acquisition system based on PXI and CAMAC has been developed for SST-1 plasma diagnostics. Both these data acquisition systems are scalable. Present data acquisition needs involving slow plasma diagnostics are catered by the PXI based data acquisition system. On the other hand, CAMAC data acquisition hardware meets all requirements of the SST-1 Phase-1 fast plasma diagnostics channels. A graphical user interface for both data acquisition systems （PXI and CAMAC） has been developed using LabVIEW application development software. The collected data on the local hard disk are directly streaming to the central server through a dedicated network for post-shot data analysis. This paper describes the development and integration of the data acquisition system for SST-1 Phase-1 plasma diagnostics. The integrated testing of the developed data acquisition system has been performed using SST-1 central control and diagnostics signal conditioning units. In the absence of plasma shots, the integrated testing of the data acquisition system for the initial diagnostics of SST-1 Phase-1 operation has been performed with simulated physical signals. The primary engineering objective of this integrated testing is to validate the performance of the developed data acquisition system under simulated conditions close to that of actual tokamak operation. The data acquisi

关键词： SST-1 data acquisition CAMAC PXI plasma diagnostics