王巍

发布时间:2022-02-22信息来源:材料科学与工程学院浏览次数:9518


王巍,教授,博士生导师,中国海洋大学青年英才工程

联系方式wwei020404@163.com


教育及工作经历

2018.11–至今  副教授,教授

中国海洋大学,材料科学与工程学院,无机材料系

2016.05-2018.11  副研究员

中国科学院海洋研究所,海洋环境腐蚀与生物污损重点实验室

2014.11-2016.05  高级工程师

中国船舶重工集团公司第七二五研究所,海洋腐蚀与防护重点实验室

2014.04-2014.10  工程师

中国船舶重工集团公司第七二五研究所,海洋腐蚀与防护重点实验室

2011.08-2014.03  博士后,材料科学与工程专业

中国船舶重工集团公司第七二五研究所/ 哈尔滨工程大学

2006.09-2011.07  博士,海洋腐蚀与防护专业

中国科学院,海洋研究所

2002.09-2006.07  本科,学士,化学工程与工艺专业

中南大学,化学化工学院

  

主要研究方向

1. 海洋智能防腐防污材料;

2. 海洋腐蚀防护技术及数值模拟;

3. 功能防护涂层;

4.海洋能源材料。


主持项目

1. 国家自然科学基金面上基金(42076039):芯鞘纳米结构离子响应自修复涂层的可控构筑及与阴极保护协同防腐蚀机制。

2. 国家自然科学基金青年基金(51401185):残存水影响下涂层自修复与低碳钢腐蚀过程的竞争机制研究。

3. 山东省自然科学基金面上项目(ZR2020ME016):基于海水中氯离子固化响应的水触发涂层可控构建及协同自修复机制。

4. 山东省优秀中青年科学家科研奖励基金(BS2014CL005):基于水触发微胶囊的防腐涂层阻断微孔渗水自修复机制研究。

5. 中国博士后科学基金(2013M531686):水触发纳米微球的制备及微孔自修复的微区电化学研究。

6. 中央高校专项(201965009):压载舱环境微胶囊基自修复防腐涂层研究

7. 中央高校专项(202165004):海洋吸波自修复防腐涂层关键技术研究

8. 应用研究项目(SF/JG-志字-2022-126):动车组多材料装配中的腐蚀风险识别技术与预防工艺研究

9. 应用研究项目(H12588):海水抽蓄发电机组防污损技术仿真模拟研究

10. 应用研究项目(H12589):海水抽蓄发电机组阴极保护方案仿真模拟研究

11. 应用研究项目(2021HT003):特种功能涂层评价研究

12. 应用研究项目(20190377):涂层腐蚀电化学测试及形貌分析

13. 中国科学院海洋环境腐蚀与生物污损重点实验室开放课题(MCKF201405):自修复水触发微球制备及渗水阻断腐蚀抑制研究。

14. 中国科学院海洋环境腐蚀与生物污损重点实验室开放课题(MCKF201604):电化学保护作用下海水管路冲刷腐蚀数值模拟研究。

15. 南海海洋资源利用国家重点实验室开放课题(2018005):海工钢筋水敏感应防腐涂层材料。

16. 青岛市源头创新计划应用基础研究(17-1-1-98-jch):海水中水敏感应自修复防腐涂层构建及自修复机理研究。

17. 南通市应用基础研究-工业创新(GY12016002):海洋腐蚀环境中水敏感应自修复防腐涂层制备研究

18. 中科院海洋新材料与应用技术重点实验室开放课题(2018K04):海工仿生自清洁自修复纳米涂层可控制备及防腐性能研究。

19. 兰州空间技术物理研究所委托项目(P20151221000695):DAG213石墨涂层表面功函数测试分析。


参与项目

1. 国家杰出青年科学基金(51525903):海工腐蚀与控制。

2. 国防基础科研项目(A0820110024):特种高性能防腐涂层材料工程化应用技术研究。

3. 高技术船舶科研项目:浮式结构物、防波设施在高温自然环境下防腐技术研究。

4. 高技术船舶科研项目:海洋工程腐蚀防护关键技术。

5. “鳌山人才”培养计划(2017ASTCP-OS09):海洋腐蚀与防护。

6. 国家军用标准(GJB 1720A2017):《异种金属的腐蚀与防护》。


代表性论文(PUBLICATIONS)

1. Du, C.; Wang, W.*; et.al. A robust anti-icing/de-icing and self-healing coating based on efficient photothermal Bi2S3/Ti3C2T nanofillers. Composites Part B: Engineering 2024, 274.

2. Ma, C.; Wang, W.*; et.al. Full solar spectrum-driven Cu2O/PDINH heterostructure with enhanced photocatalytic antibacterial activity and mechanism insight. J Hazard Mater 2023, 448, 130851.

3. Kang, Q.; Wang, W.*; et.al. Self-healing protective coating with dual reversible bonds triggered by photothermal responsive Co9S8@Bi2S3 hollow core-shell nanofillers. Prog Org Coat 2023, 185.

4. L. Sun, W. Li, G. Lv, W. Wang*, S. Chen*, Strategy for reducing the carriers transfer antagonistic effect between heterojunction and plasmonic effect and weakening photo corrosion of Cu2O for excellent photocatalytic bacteriostasis, Journal of Colloid and Interface Science 2023, 630, 556-572.

5. H. Feng, W. Wang*, T. Wang, L. Zhang, W. Li, J. Hou, S. Chen*, Preparation of dynamic polyurethane networks with UV-triggered photothermal self-healing properties based on hydrogen and ion bonds for antibacterial applications, Journal of Materials Science & Technology 2023, 133, 89-101.

6. W. Wang *, C. Liu, M. Zhang, C. Zhang, L. Cao, C. Zhang, T. Liu, D. Kong, W. Li, S. Chen *, In situ synthesis of 2D/2D MXene-COF heterostructure anchored with Ag nanoparticles for enhancing Schottky photocatalytic antibacterial efficiency under visible light, Journal of Colloid and Interface Science 2022, 608, 735-748.

7. T. Wang, W. Wang *, H. Feng, T. Sun, C. Ma, L. Cao, X. Qin, Y. Lei, J. Piao, C. Feng *, Q. Cheng, S. Chen *, Photothermal nanofiller-based polydimethylsiloxane anticorrosion coating with multiple cyclic self-healing and long-term self-healing performance, Chemical Engineering Journal 2022, 446, 137077.

8. T. Wang, H. Feng, W. Wang *, L. Cao, C. Ma, X. Qin, J. Piao, Z. Mao, S. Chen *, Interfacial controllable heterojunctions nanosheets as photothermal catalyzer for cyclic photothermal self-healing of polydimethylsiloxane coating, Composites Part B: Engineering 2022, 240, 110002.

9. X. Sun, C. Ma, F. Ma, T. Wang, C. Feng *, W. Wang *, A novel coating with SiO2 anchored on MXene loading tannic acid for self-healing anticorrosive performance, Journal of Alloys and Compounds 2022, 928, 167202.

10. T. Sun, L. Zhang, W. Wang *, W. Li, S. Chen *, K. Jin, C. Ma, A Self-Healing Composite Material with Microwave Absorbing and Anticorrosion Properties Accelerated by Carboxylated Carbon Nanotubes, ACS Applied Polymer Materials 2022.

11. C. Ma, W. Wang *, D. Kong, S. Wei, W. Li, S. Chen *, A novel core/shell cuprous oxide-based structure with improved microwave absorbing and antibacterial performance, Journal of Cleaner Production 2022, 378, 134419.

12. C. Liu, W. Wang *, M. Zhang, C. Zhang, C. Ma, L. Cao, D. Kong, H. Feng, W. Li, S. Chen *, Synthesis of MXene/COF/Cu2O heterojunction for photocatalytic bactericidal activity and mechanism evaluation, Chemical Engineering Journal 2022, 430, 132663.

13. Q. Li, L. Cao, W. Wang *, X. Qin, S. Chen *, Photo-responsive rapid self-healing polyurethane elastomer with anticorrosion and antibacterial functions, Composites Part A: Applied Science and Manufacturing 2022, 163, 107213.

14. D. Kong, C. Ma, W. Wang *, C. Liu, Y. Tian, T. Wang, Z. Zhao, C. Zhang, H. Feng, S. Chen *, Two birds with one stone: Interfacial controls and pH response for long-term and high-efficiency Cu2O antibacterial materials, Chemical Engineering Journal 2022, 427, 131734.

15. X. Ji, W. Wang *, X. Zhao *, L. Wang, F. Ma, Y. Wang, J. Duan, B. Hou *, Poly(dimethyl siloxane) anti-corrosion coating with wide pH-responsive and self-healing performance based on core−shell nanofiber containers, Journal of Materials Science & Technology 2022, 101, 128-145.

16. W. Hao, W. Wang*, C. Liu, S. Li, Q. Wang, C. Ma, S. Chen*, Synthesis of Ag@CeO2@Ti3C2 heterojunction and its photocatalytic bacteriostatic properties, Materials Letters 2022, 308, 131202.

17. L. Cao, W. Wang *, Q. Li, C. Feng, T. Wang, X. Qin, J. Piao, S. Chen *, Three-dimensional nanofibers network multifunctional material for photothermal self-healing protective coating, Chemical Engineering Journal 2022, 440, 134943.

18. L. Cao, Q. Wang, W. Wang *, Q. Li, S. Chen *, Synthesis of Smart Nanofiber Coatings with Autonomous Self-Warning and Self-Healing Functions, ACS Applied Materials & Interfaces (2022).

19. S. Wang, W. Wang, L. Yue, S. Cui, H. Wang, C. Wang, S. Chen*, Hierarchical Cu2O nanowires covered by silver nanoparticles-doped carbon layer supported on Cu foam for rapid and efficient water disinfection with lower voltage, Chemical Engineering Journal 2022, 382, 122855.

20. Q. Wang, W. Wang*, X. Ji, X. Hao, C. Ma, W. Hao, X. Li, S. Chen*, Self-Healing Coatings Containing Core–Shell Nanofibers with pH-Responsive Performance, ACS Applied Materials & Interfaces 2021,13, 3139-3152.

21. C. Ma, W. Wang*, Q. Wang, N. Sun, S. Hu, S. Wei, H. Feng, X. Hao, W. li, D. Kong, S. Wang, S. Chen*, Facile synthesis of BTA@NiCo2O4 hollow structure for excellent microwave absorption and anticorrosion performance, Journal of Colloid and Interface Science 2021, 594, 604-620.

22. T. Liu, W. Li, C. Zhang, W. Wang*, W. Dou, S. Chen*, Preparation of highly efficient self-healing anticorrosion epoxy coating by integration of benzotriazole corrosion inhibitor loaded 2D-COF, Journal of Industrial and Engineering Chemistry 2021, 97, 560-573.

23. X. Ji, W. Wang*, X. Zhao, B. Zhang, S. Chen, Y. Sun, W. Li, B. Hou*, Preparation and properties of self-healing anticorrosive coating on methyl cellulose core-shell fibers, Materials Letters 2021, 290, 129504.

24. H. Feng, W. Wang, W. Wang*, M. Zhang, C. Wang, C. Ma, W. Li, S. Chen*, Charge transfer channels of silver @ cuprous oxide heterostructure core-shell nanoparticles strengthen high photocatalytic antibacterial activity, Journal of Colloid and Interface Science 2021, 601, 531-543.

25. W. Wang*, H. Feng, J. Liu, M. Zhang, S. Liu, C. Feng, S. Chen*, A photo catalyst of cuprous oxide anchored MXene nanosheet for dramatic enhancement of synergistic antibacterial ability, Chemical Engineering Journal 2020, 386, 124116.

26. H. Feng, W. Wang*, M. Zhang, S. Zhu, Q. Wang, J. Liu, S. Chen*, 2D titanium carbide-based nanocomposites for photocatalytic bacteriostatic applications, Applied Catalysis B: Environmental 2020, 266, 118609.

27. C. Ma, Z. Yang, W. Wang*, X. Hao, M. Zhang, S. Zhu, S. Chen*, Fabrication of Ag-Cu2O/PANI nanocomposites for visible-light photocatalysis triggering super antibacterial activity, Journal of Materials Chemistry C 2020.

28. W. Wang*, H. Wang, J. Zhao, X. Wang, C. Xiong, L. Song*, R. Ding, P. Han, W. Li*, Self-healing performance and corrosion resistance of graphene oxide–mesoporous silicon layer–nanosphere structure coating under marine alternating hydrostatic pressure, Chemical Engineering Journal 2019, 361, 792-804.

29. X. Ji, W. Wang*, W. Li*, X. Zhao, A. Liu, X. Wang, X. Zhang, W. Fan, Y. Wang, Z. Lu, S. Liu, H. Shi, pH-responsible self-healing performance of coating with dual-action core-shell electrospun fibers, Journal of the Taiwan Institute of Chemical Engineers 2019, 104, 227-239.

30. W. Fan, Y. Zhang, W. Li*, W. Wang*, X. Zhao, L. Song, Multi-level self-healing ability of shape memory polyurethane coating with microcapsules by induction heating, Chemical Engineering Journal 2019, 368, 1033-1044.

31. Z. Yang, C. Ma, W. Wang*, M. Zhang, X. Hao, S. Chen*, Fabrication of Cu2O-Ag nanocomposites with enhanced durability and bactericidal activity, Journal of Colloid and Interface Science 2019, 557, 156-167.

32. Wei Wang*, Likun Xu, Huyuan Sun, Xiangbo Li, Shouhuan Zhao, Weining Zhang. Spatial resolution comparison of AC-SECM with SECM and their characterization of self-healing performance of hexamethylene diisocyanate trimer microcapsule coatings. Journal of Materials Chemistry A 2015, 3(10), 5599–5607.

33. Wei Wang*, Likun Xu, Xiangbo Li, Zhifeng Lin, Yi Yang, Enpeng An. Self-healing mechanisms of water triggered smart coating in seawater. Journal of Materials Chemistry A 2014, 2(6), 1914–1921.

34. Wei Wang*, Likun Xu, Feng Liu, Xiangbo Li, Lukuo Xing. Synthesis of isocyanate microcapsules and micromechanical behavior improvement of microcapsule shells by oxygen plasma treated carbon nanotubes. Journal of Materials Chemistry A 2013, 1(3), 776-782.

35. W. Wang, W. Li, W. Fan, X. Zhang, L. Song, C. Xiong, X. Gao, X. Liu, Accelerated self healing performance of magnetic gradient coating, Chemical Engineering Journal 2018, 332,658670.

36. Wei Wang*, Likun Xu, Xiangbo Li, Yi Yang, Enpeng An. Self-healing properties of protective coatings containing isophorone diisocyanate microcapsules on carbon steel surfaces. Corrosion Science 2014, 80, 528–535.

37. Wei Wang, Weihua Li, Liying Song, Weijie Fan, Chuansheng Xiong, Xiang Gao, Xiaoying Zhang, and Xiaojie Liu. Self-Healing Performance of Coatings Containing Synthetic Hexamethylene Diisocyanate Biuret Microcapsules. Journal of The Electrochemical Society 2017, 164(12), C635-C640.     

38. Wang W, Li W-H, Song L-Y, Fan W-J, Liu X-J, Zheng H-B. Numerical simulation and re-design optimization of impressed current cathodic protection for an offshore platform with biofouling in seawater. Materials and Corrosion 2018, 69(2), 239–250.

39. X. Wang, W. Wang*, A. Liu, W.-j. Fan, R. Ding, H. Tian, P. Han, W.-h. Li*, Self-healing and anti-corrosion performances of 1, 2, 4 - Triazole modified nano-silica hydrogels, Colloid and Interface Science Communications 2018, 27, 11-17.

40. Xin Ma, Likun Xu*, Wei Wang, Zhifeng Lin, Xiangbo Li. Synthesis and characterisation of composite nanoparticles of mesoporous silica loaded with inhibitor for corrosion protection of Cu-Zn alloy. Corrosion Science 2017, 120(15), 139-147. 



授权专利

1. 一种潜伏型自修复微胶囊及其制备方法. 专利号:ZL201210031060.0

2. 微裂纹自修复微胶囊及其制备方法. 专利号:ZL201210218226.X

3. 增强自修复微胶囊囊壁韧性的方法和制备的自修复微胶囊. 专利号:ZL201210215007.6

4. 局部区域形貌扫描的电化学检测装置. 专利号:ZL201410276983.1

5. 一种磁性自修复微胶囊的制备方法。专利号:ZL201510764869.8

6. 一种海洋生物基自修复防腐涂料及其制备方法。专利号:ZL201611015043.2

7. 一种包覆缓蚀剂的多孔壳聚糖微球及其制备和应用。专利号ZL201611216514.6

8. 一种环境友好型自修复可拉伸的聚硅氧烷基材料及其合成方法与应用。专利号ZL202010222393.6

9. 一种嵌段共聚自修复聚氨酯防腐蚀涂料及其合成方法和应用。专利号:ZL202010222381.3

10. 一种海洋压力交变敏感的超分子微球及其合成方法。专利号:ZL201711277157.9

11. 一种聚苯胺-MOF复合涂层涂层电极材料及制备方法和应用。专利号:ZL202010497124.0

12. 一种基于pH响应的核壳自修复纤维串珠型静电纺丝材料及其合成方法与应用。申请号:ZL201910279680.8


软件著作权

1. 扫描电化学局部交流阻抗数据拟合软件. 2013SR137005


参编标准

1. 参与中国工程建设标准化协会标准《混凝土结构耐久性电化学修复技术规程》2019.5

2. 参与标准GJB 1720-2018异种金属的腐蚀与防护》(2018


参编著作

1.《海洋防污抗菌功能材料》,科学出版社,2021-10-01

2.《海洋腐蚀与防护辞典》(修订版)中英文词条校对编辑

3. 海洋学科知识分类体系建设——负责“海洋工程”学科中“海洋腐蚀”专业主题词收录


科研奖励

1. 2017年中国腐蚀与防护学会科学技术奖, 中国腐蚀与防护学会。

2. 2015年中国腐蚀与防护学会科学技术奖, 中国腐蚀与防护学会。

  

招生信息:

研究组从事海洋材料基础研究和工程转化应用技术开发,真诚欢迎具有化学化工、材料学、生物学、高分子材料、数学等专业背景的同学报考我们的研究生。鼓励学生按照自己的兴趣自主选题。

课题组合影

  

Resume in English

Wei Wang

Title: Professor

Address: School of Materials Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao 266100, China.

E-mail: wwei020404@163.com

  

RESEARCH FIELD

(1) Marine self-healing coating

(2) Corrosion protection

(3) Numerical simulation

(4) Marine energy materials

  

EDUCATION

Ph.D.2006.09-2011.07 The Institute of Oceanology, Chinese Academy of Sciences.

B.Sc.2002.09-2006.07 College of Chemistry and Chemical Engineering, Central South University.


EMPLOYMENT

2018.11- presentAssociated Professor, School of Materials Science and Engineering, Ocean University of China

2016.05-2018.11 Associated Professor, Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences

2014.11-2016.05 Senior engineer, Key Laboratory of Marine Corrosion and Protection of China Shipbuilding Industry Group Corporation 725th Institute

2014.04-2014.10Engineer, Key Laboratory of Marine Corrosion and Protection of China Shipbuilding Industry Group Corporation 725th Institute

2011.08-2014.03 Postdoctor, China Shipbuilding Industry Group Corporation 725th InstituteHarbin Engineering University


Authorized Patents

1. One latent self-repair microcapsule and preparation method. (ZL201210031060.0)

2. Micro-crack self-repairing microcapsule and preparation method. (ZL201210218226.X)

3. One method for enhancing capsule wall toughness of self-repairing microcapsules, and self-repairing microcapsules. (ZL201210215007.6)

4. Electrochemical detection device for scanning the appearance of localarea. (ZL201410276983.1)

5. One method of magnetic self-repairing microcapsules. (ZL201510764869.8)

6. Marine bio-based self-repairing anti-corrosion coating and preparation method. (ZL201611015043.2)

7. Corrosion inhibitor-coated porous chitosan microspheres and its preparation and application. (ZL 201611216514.6)


Application for Patents

1. An environmentally friendly anti-fouling self-healing gel coating and its synthesis method and application.(201910279869.7)

2. A core-shell self-repairing fiber beaded electrospinning material based on pH response and its synthesis method and application.(201910279680.8)

3. One electrochemical detection method for local morphology scanning. (201410277284.9)

4. Graphene-based self-repairing nanosheet sphere resisting deep sea alternating pressure and synthesis method of nanosheet-sphere.(201711277150.7)

5. One synthesis method of ocean pressure alternating sensitive supramolecular microsphere. (201711277157.9)

6. P-phenylphenol-based polyether ether ketone resin for wear-resistant composite coatings used in marine corrosive environment, and preparation method of p-phenylphenol-based polyether ether ketone resin. (201611015149.2)

7. Marine organism-based efficient anticorrosive coating and preparation method. (201611015023.5)

8. Sodium alginate microsphere with corrosion inhibitor being coated inside, and preparation method and applications. (201710695345.7)

9. One synthesis method of environmentally-friendly self-repairing hydrogel anticorrosion. (201810762969.0)

10. One synthesis method of self-repairing chitosan hydrogel corrosion-resistant coating. (201810762982.6)

11. One synthesis method of environmentally friendly efficient anti-corrosion water-based coating. (201810767976.X)


Software Copyright

1. Scanning Electrochemical Local AC Impedance Data Fitting Software. 2013SR137005.


Standards

1. Participated in the standard GJB 1720-1993 Corrosion and Protection of Dissimilar Metals 2017 Edition (Development, Review).

2. Participated in the Standard of China Engineering Construction Standardization Association Technical Regulations for Electrochemical Repair of Concrete Structure Durability (2019).


Writings

1. Proofreading of Chinese and English Terms in the Dictionary of Marine Corrosion and Protection (Revised Edition).

2. Construction of Marine Discipline Knowledge Classification System - Responsible for the Marine Corrosion professional keywords in the Ocean Engineering discipline.

  

RESEARCH AND DEVELOPMENT PROJECTS

PI

1. National Natural Science Foundation of China (51401185): The competitive mechanism between self-healing process of coating and corrosion process of low carbon steel influenced by residual water.

2. China Postdoctoral Science Foundation (2013M531686): Preparation of water-triggered nanospheres and microporous self-healing performance by local-electrochemical methods.

3. Excellent Middle-Aged and Youth Scientist Award Foundation of Shandong Province (BS2014CL005): Self-repairing Mechanism of Microporous Water Seepage by Anti-corrosion Coating Based on Water-triggered Microcapsules.

4. Open Project of Key Laboratory of Marine Environmental Corrosion and Biofouling, Chinese Academy of Sciences (MCKF201405): Self-healing water-triggered microsphere preparation and water-blocking corrosion inhibition.

5. Open Project of Key Laboratory of Marine Environmental Corrosion and Biofouling of Chinese Academy of Sciences (MCKF201604): Numerical simulation of erosion corrosion of seawater pipeline under electrochemical protection.

6. Opening Foundation of State Key Laboratory of Marine Resource Utilization in South China Sea (2018005): Research on anti-corrosion coating materials and self-repairing mechanism of water-sensitive marine rebar.

7. 2017 Basic Research on Applied Basic Research Programs of Qingdao (17-1-1-98-jch): Construction of self-repairing anti-corrosion coating and self-repair mechanism for its water sensitive in seawater.

8. Nantong City 2016_G-Application Basic Research-Industrial Innovation (GY12016002): Preparation and self-repair mechanism of water sensitive self-repairing coating in marine corrosive environment.

9. Open Project of Key Laboratory of Marine New Materials and Applied Technology of Chinese Academy of Sciences (2018K04): Controllable preparation and anticorrosion performance of marine bionic self-cleaning nano-coating.

10. Lanzhou Institute of Space Technology and Physics commissioned project (P20151221000695): Analysis of surface work function of DAG213 graphite coating.

CO-PI

1. National Science Fund for Distinguished Young Scholars(51525903): Marine Engineering Corrosion and Control.

2. National Defense Basic Research Project (A0820110024): Special high-performance anticorrosive coating materials and their engineering applications.

3. High-tech ship scientific research project: Corrosion protective technology of floating structure and anti-wave facilities in high temperature and natural environment.

4. High-tech ship scientific research project: Key technology for marine engineering corrosion protection.

5. AoShan Talents Cultivation Program (2017ASTCP-OS09): Marine Corrosion and Protection.

6. National Military Standard (GJB 1720A-2017): Corrosion and Protection of Dissimilar Metals.


AWARDED

1. 2017 China Society of Corrosion and Protection Science and Technology Award, China Society for Corrosion and Protection, 2017.06.20, ranked first.

2. 2015 China Society of Corrosion and Protection Science and Technology Award, China Society for Corrosion and Protection, 2015.10.08, ranked first.

  

  


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