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| 1 | COVID-19 Outbreak Caused by Contaminated Packaging of Imported Cold-Chain Products—Liaoning Province,China,July 2020显示文摘Summary What is known about this topic?Few major outbreaks of coronavirus disease 2019(COVID-19)have occurred in China after major nonpharmaceutical interventions and vaccines have been deployed and implemented.However,sporadic outbreaks that had high possibility to be linked to cold chain products were reported in several cities of China..What is added by this report?In July 2020,a COVID-19 outbreak occurred in Dalian,China.The investigations of this outbreak strongly suggested that the infection source was from COVID-19 virus-contaminated packaging of frozen seafood during inbound unloading personnel contact.What are the implications for public health practice?Virus contaminated paper surfaces could maintain infectivity for at least 17–24 days at-25℃.Exposure to COVID-19 virus-contaminated surfaces is a potential route for introducing the virus to a susceptible population.Countries with no domestic transmission of COVID-19 should consider introducing prevention strategies for both inbound travellers and imported goods.Several measures to prevent the introduction of the virus via cold-chain goods can be implemented. | Huilai Ma1 Jianqun Zhang Ji Wang Ying Qin Cao Chen Yang Song Liang Wang Jun Meng Lingling Mao Fengqin Li Ning Li Jian Cai Yong Zhang Dayan Wang Yunting Xia Hong Wang Shaofeng Jiang Xiang Zhao Peihua Niu Wenjie Tan Tao Ma Yecheng Yao Naiying Mao Zhen Zhu Tianjiao Ji Qian Yang Baoying Huang Li Zhao Jianxing Yu Li Bai Shuangli Zhu Dongyan Wang Yan Zhang Yingwei Sun Mingchun Luan Yanhai Wang Haibo Sun Shihong Yang Zhijian Bo Xiang Ren Zhongjie Li George Fu Gao Wei Yao Wenqing Yao Zijian Feng Wenbo Xu | 2021 | China CDC weekly2021，3，21： | 16 |
| 2 | Microstructure, biodegradation, antibacterial and mechanical properties of ZK60-Cu alloys prepared by selective laser melting technique显示文摘Magnesium(Mg) alloys are receiving increasing attention for body implants owing to their good biocompatibility and biodegradability. However, they often suffer from bacterial infections on account of their insufficient antibacterial ability. In this study, ZK60-x Cu(x = 0, 0.2, 0.4, 0.6 and 0.8 wt%) alloys were prepared by selective laser melting(SLM) with alloying copper(Cu) to enhance their antibacterial ability.Results showed that ZK60-Cu alloys exhibited strong antibacterial ability due to combination of release of Cu ions and alkaline environment which could kill bacteria by destroying cellular membrane structure,denaturing enzymes and inhibiting deoxyribonucleic acid(DNA) replication. In addition, their compressive strength increased due to grain refinement and uniformly dispersing of short-bar shaped MgZnCu phases. Moreover, ZK60-Cu alloys also exhibited good cytocompatibility. In summary, ZK60-Cu alloys with antibacterial ability may be promising implants for biomedical applications. | Cijun Shuai Long Liu Mingchun Zhao Pei Feng Youwen Yang Wang Guo Chengde Gao Fulai Yuan | 2018 | Journal of Materials Science & Technology2018，34，10： | 12 |
| 3 | Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold显示文摘Zinc(Zn)possesses desirable degradability and favorable biocompatibility,thus being recognized as a promising bone implant material.Nevertheless,the insufficient mechanical performance limits its further clinical application.In this study,reduced graphene oxide(RGO)was used as reinforcement in Zn scaffold fabricated via laser additive manufacturing.Results showed that the homogeneously dispersed RGO simultaneously enhanced the strength and ductility of Zn scaffold.On one hand,the enhanced strength was ascribed to(i)the grain refinement caused by the pinning effect of RGO,(ii)the efficient load shift due to the huge specific surface area of RGO and the favorable interface bonding between RGO and Zn matrix,and(iii)the Orowan strengthening by the homogeneously distributed RGO.On the other hand,the improved ductility was owing to the RGO-induced random orientation of grain with texture index reducing from 20.5 to 7.3,which activated more slip systems and provided more space to accommodate dislocation.Furthermore,the cell test confirmed that RGO promoted cell growth and differentiation.This study demonstrated the great potential of RGO in tailoring the mechanical performance and cell behavior of Zn scaffold for bone repair. | Youwen Yang Yun Cheng Shuping Peng Liang Xu Chongxian He Fangwei Qi Mingchun Zhao Cijun Shuai | 2021 | Bioactive Materials2021，6，5： | 4 |
| 4 | Designing a high Si reduced activation ferritic/martensitic steel for nuclear power generation by using Calphad method显示文摘A high Si reduced activation ferritic/martensitic(RAFM) steel for nuclear structure application is successfully designed by using Calphad method. The main designed chemical composition is C 0.18–0.22%, Cr10.0–10.5%, W 1.0–1.5%, Si 1.0–1.3%, V+Ta 0.30–0.45%, and Fe in balance. High Si design brings excellent corrosion resistance, while low activation is advantageous in the nuclear waste processing. The experimental results indicate that the newly designed high Si RAFM steel had full martensitic structure and uniformly distributed fine second phase particles, and exhibited excellent mechanical properties and corrosion resistance. Compared to the P91 steel, this new RAFM steel designed by Calphad method is expected to be a promising candidate used in nuclear power generation, which also provides a new and effective approach to the development of RAFM steel for nuclear application. | Chao Liu Quanqiang Shi Wei Yan Chunguang Shen Ke Yang Yiyin Shan Mingchun Zhao | 2019 | Journal of Materials Science & Technology2019，35，3： | 3 |
| 5 | Influence of the β-phase morphology on the corrosion of the Mg alloy AZ91显示文摘 | Zhao Mingchun Liu Ming Song Guangling | 2006 | Corrosion Science2006，48，5： | 1 |
| 6 | The effects of thermo-mechanical control process on microstructures and mechanical properties of a commercial pipeline steel显示文摘 | MingChun Zhao Ke Yang YiYing Shan | 2002 | Materials Science and Engineering2002，355，： | 1 |
| 7 | Comparison on strength and toughness behaviors of microalloyed pipeline steels with acicular ferrite and uhrafine ferrite显示文摘 | ZHAO Mingchun YANG Ke SHAN Yiyin | 2003 | Materials Letters2003，57，910： | 1 |
| 8 | Continuous cooling transformation of undeformed and deformed low carbon pipeline steels显示文摘 | Zhao Mingchun Yang Ke Xiao Furen Shan Yiyin | 2003 | Materials Science and Engineering A3552003，，： | 1 |
| 9 | Summarization on hydrolysis technology route of lipin显示文摘 | Shen Mingchun Zhao Lizhu | 1994 | Surfactant Industry1994，94，2： | 1 |
| 10 | Continuous cooling transformation of undeformed and deformed low carbon pipeline steels显示文摘 | Zhao Mingchun Yang Ke Xiao Furen | 2003 | Materials Science and Engineering A2003，355，12： | 1 |
| 11 | Continuous cooling transformation of undeformed and deformed low carbon pipeline steels显示文摘 | Zhao Mingchun Yang Ke Xiao Furen | 2003 | Mater Sci Eng2003，，1： | 1 |
| 12 | Effects of thermomechanical control process on microstructures and mechanical properties of X60 pipeline steel显示文摘 | Zhao Mingchun Yang Ke Shan Yiying | 2002 | Mater Sci Eng2002，，3： | 1 |
| 13 | Influence of microstructure on corrosion of as-cast ZE41显示文摘 | ZHAO Mingchun LIU Ming SONG Guangling | 2008 | Advanced Engineering Materials2008，10，112： | 1 |
| 14 | Investigation on the H2S-resistant behaviors of acicular ferrite and ultrafine ferrite显示文摘 | ZHAO Mingchun SHAN Yiying XIAO Fu Ren | 2002 | Materials Letters2002，，57： | 1 |
| 15 | Comparison on strength and toughness behaviors of microalloyed pipeline steels with acicular ferrite and ultrafine ferrite显示文摘 | Zhao Mingchun Yang Ke Shan Yiyin | 2003 | Materials Letters2003，57，910： | 1 |
| 16 | Investigation on the H2S-resistant behaviors of acicular ferrite and ultrafine ferrite 显示文摘 | ZHAO Mingchun SHAN Yiying XIAO Furen | 2002 | Materials Letters2002，57，： | 1 |
| 17 | Continuous Cooling Transformation of Undeformed and Deformed Low Carbon Pipeline Steels显示文摘 | Mingchun Zhao Ke Yang Furen Xiao | 2003 | Materials Science and Engineering A2003，355，： | 1 |
| 18 | Difference in the role non-quench aging on mechanical properties between acicular ferrite and ferite-pearlite pipeline steels显示文摘 | ZHAO Mingchun Toshihiro HANAMURA QIU Hai | 2005 | ISIJ International2005，45，1： | 1 |
| 19 | Continuous cooling transformation of undeformed and deformed low carbon pipeline steels 显示文摘 | Zhao Mingchun Yang Ke Xiao Furen | 2003 | Materials Science and Engineering2003，355，： | 1 |
| 20 | Influence of pH and chloride ion oncentration on the corrosion of Mg alloy ZE41 显示文摘 | Zhao Mingchun Liu Ming Song Guanling | 2009 | Corrosion Science2009，50，11： | 1 |
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