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Journal of Environmental Sciences 2021年第6期33卷 351-364页

作者： Yuenan Zhang Yujie Zhang Ozioma Udochukwu Akakuru Xiawei Xu Aiguo Wu Cixi Institute of Biomedical Engineering Chinese Academy of Science(CAS)Key Laboratory of Magnetic Materials and Devices&Zhejiang Engineering Research Center for Biomedical MaterialsNingbo Institute of Materials Technology and EngineeringCAS NingboNingbo 315201China University of Chinese Academy of Sciences Beijing 100049China

Cadmium contamination of soil is a global issue and in-situ remediation technology as a promising mitigation strategy has attracted more and more *** nanomaterials have been applied for the in-situ remediation of cadmium-contaminated soil due to their excellent properties of the nano-scale size *** this work,recent research progress of various nanomaterials,including carbon nanomaterials,metal-based nanomaterials and nano mineral materials,in the removal of cadmium and in-situ remediation of cadmiumcontaminated soil were systematically *** emphases were particularly laid on both laboratory and field restoration ***,the factors which can affect the stability of cadmium,main interaction mechanisms between nanomaterials and cadmium in the soil,and potential future research direction were also ***,it is believed that this work will ultimately contribute to the myriad of environmental cleanup advances,and further improve human health and sustainable development.

关键词： Cadmium pollution Contaminated soil In-situ remediation Mechanism Nanomaterials

Bifurcation analysis of visual angle model with anticipated time and stabilizing driving behavior

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Chinese Physics B 2022年第7期31卷 214-228页

作者： Xueyi Guan Rongjun Cheng Hongxia Ge Faculty of Maritime and Transportation Ningbo UniversityNingbo 315211China

In the light of the visual angle model(VAM),an improved car-following model considering driver's visual angle,anticipated time and stabilizing driving behavior is proposed so as to investigate how the driver's behavior factors affect the stability of the traffic *** on the model,linear stability analysis is performed together with bifurcation analysis,whose corresponding stability condition is highly fit to the results of the linear ***,the time-dependent Ginzburg–Landau(TDGL)equation and the modified Korteweg–de Vries(m Kd V)equation are derived by nonlinear analysis,and we obtain the relationship of the two equations through the ***,parameter calibration and numerical simulation are conducted to verify the validity of the theoretical analysis,whose results are highly consistent with the theoretical analysis.

关键词： visual angle bifurcation analysis anticipated time stabilizing driving behavior TDGL and mKdV equations

High-speed underwater wireless optical communications: from a perspective of advanced modulation formats [Invited]

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Chinese Optics Letters 2019年第10期17卷 72-79页

作者： Chao Fei Xiaojian Hong Ji Du Guowu Zhang Yuan Wang Xiaoman Shen Yuefeng Lu Yang Guo Sailing He Centre for Optical and Electromagnetic research National Engineering Research Center for Optical InstrumentsZhejiang UniversityHangzhou 310058China ningbo research Institute Zhejiang UniversityNingbo 315100China

In this paper,recent advances in underwater wireless optical communication(UWOC)are reviewed for both LED-and LD-based systems,mainly from a perspective of advanced modulation *** series-based nonlinear equalizers,which can effectively counteract the nonlinear impairments induced by the UWOC system components,are discussed and experimentally *** the effectiveness and robustness of the proposed Volterra nonlinear equalizer in UWOC systems under different water turbidities are *** further approach the Shannon capacity limit of the UWOC system,the probabilistic constellation shaping technique is introduced,which can overcome the inherent gap between a conventional regular quadrature amplitude modulation(QAM)format and the Shannon capacity of the *** experimental results have shown a significant system capacity improvement compared to the cases using a regular QAM.

关键词： optical underwater overcome

Evaluation of probiotic yoghurt by the mixed culture with Lactobacillus plantarum A3

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Food Science and Human Wellness 2022年第2期11卷 323-331页

作者： Fengxuan Lang Jianzhu Wen Zhen Wu Daodong Pan Linjun Wang key Laboratory of Animal Protein Deep Processing Technology of Zhejiang School of Food and Pharmaceutical SciencesNingbo UniversityNingbo 315211China School of Food Science&Pharmaceutical Engineering Nanjing Normal UniversityNanjing 210097China Qingyunshan Pharmaceutical GuangdongGuangzhou 512000China

Lactic acid bacteria(LAB)fermentation is the simplest and safest way of food preservation,and the use of probiotics in yoghurt could provide dairy products with unique flavors,textures and health *** this study,Lactobacillus bulgaricus,Streptococcus thermophilus,*** DSMZ 8533 and the potential probiotic strain *** A3 were used for the milk *** found the texture properties such as hardness,consistency,and viscosity of the yoghurt were enhanced in the mixed culture ***,components like amino acid(leucine),vanilla(vanillin),C;(unsaturated fatty acids)were also accumulated in *** A3 fermented yoghut,which leads to the significant sensory profiling difference compared with the former plain *** these results proved *** A3 is a potential probiotic stom winch could enhance the sensory and nutrition profiling of the fermented *** work still needs to be done on the synergistic interaction between the traditional strains and the probiotics during the fermentation process.

关键词： Lactobacillus plantarum Flavor profiles Volatile organic compounds Sensory profiles Fatty acid

多级形变热处理Cu-Ni-Co-Si-Cr-Mg合金的组织与性能

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Transactions of Nonferrous Metals Society of China 2023年第12期33卷 3739-3755页

作者：秦柳馨周涛姜晓羽王檬胡锦辉吴子潇孟祥鹏姜雁斌李周中南大学材料科学与工程学院长沙410083 中南大学粉末冶金国家重点实验室长沙410083

设计并制备一种高强度、中等导电性的Cu-1.3Ni-1.2Co-0.7Si-0.3Cr-0.1 Mg合金。研究多级形变热处理对合金组织和性能的影响及其强化机制。结果表明,在时效过程中,高密度位错区和亚晶界处析出大量纳米级的β-Ni_(3)Si、δ-(Ni,Co)_(2)Si... 详细信息

设计并制备一种高强度、中等导电性的Cu-1.3Ni-1.2Co-0.7Si-0.3Cr-0.1 Mg合金。研究多级形变热处理对合金组织和性能的影响及其强化机制。结果表明,在时效过程中,高密度位错区和亚晶界处析出大量纳米级的β-Ni_(3)Si、δ-(Ni,Co)_(2)Si和Cr相颗粒,凝固过程中形成亚微米级Cr_(3)Si相。该合金的抗拉强度、屈服强度和电导率分别为882 MPa、857 MPa和46.7%(IACS)。通过强化模型的计算和强度测试,该合金的主要强化机制为析出强化、应变强化和亚结构强化。

关键词：多元合金化显微组织演变析出相性能强化机制

Pulsed electrolysis of carbon dioxide by large-scale solid oxide electrolytic cells for intermittent renewable energy storage

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Carbon Energy 2023年第4期5卷 2-12页

作者： Anqi Wu Chaolei Li Beibei Han Wu Liu Yang Zhang Svenja Hanson Wanbing Guan Subhash C.Singhal key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiangChina Faculty of Science and Engineering University of Nottingham Ningbo ChinaNingboZhejiangChina

CO_(2) electrolysis with solid oxide electrolytic cells(SOECs)using intermittently available renewable energy has potential applications for carbon neutrality and energy *** this study,a pulsed current strategy is used to replicate intermittent energy availability,and the stability and conversion rate of the cyclic operation by a large-scale flat-tube SOEC are *** hundred cycles under pulsed current ranging from -100 to -300 mA/cm^(2) with a total operating time of about 800 h were carried *** results show that after 100 cycles,the cell voltage attenuates by 0.041%/cycle in the high current stage of−300 mA/cm^(2),indicating that the lifetime of the cell can reach up to about 500 *** total CO_(2) conversion rate reached 52%,which is close to the theoretical value of 54.3% at -300 mA/cm^(2),and the calculated efficiency approached 98.2%,assuming heat *** study illustrates the significant advantages of SOEC in efficient electrochemical energy conversion,carbon emission mitigation,and seasonal energy storage.

关键词： carbon dioxide cyclic electrolysis pulse current solid oxide electrolytic cells

Enhanced antibacterial behavior of a novel Cu-bearing high-entropy alloy

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Journal of Materials Science & Technology 2022年第22期117卷 158-166页

作者： Guangyu Ren Lili Huang Kunling Hu Tianxin Li Yiping Lu Dongxu Qiao Haitao Zhang Dake Xu Tongmin Wang Tingju Li Peter K.Liaw Engineering research Center of High Entropy Alloy Materials(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China College of Food Science and Engineering Ocean University of ChinaQingdao 266100China Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang 110819China Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN 37996United States

Contact infection of bacteria and viruses has been a critical threat to human health. The worldwideoutbreak of COVID-19 put forward urgent requirements for the research and development of the selfantibacterial materials, especially the antibacterial alloys. Based on the concept of high-entropy alloys, thepresent work designed and prepared a novel Co_(0.4)FeCr_(0.9)Cu_(0.3) antibacterial high-entropy alloy with superior antibacterial properties without intricate or rigorous annealing processes, which outperform the antibacterial stainless steels. The antibacterial tests presented a 99.97% antibacterial rate against Escherichiacoli and a 99.96% antibacterial rate against Staphylococcus aureus after 24 h. In contrast, the classic antibacterial copper-bearing stainless steel only performed the 71.50% and 80.84% antibacterial rate, respectively. The results of the reactive oxygen species analysis indicated that the copper ion release and theimmediate contact with copper-rich phase had a synergistic effect in enhancing antibacterial ***, this alloy exhibited excellent corrosion resistance when compared with the classic antibacterialstainless steels, and the compression test indicated the yield strength of the alloy was 1015 MPa. Thesefindings generate fresh insights into guiding the designs of structure-function-integrated antibacterial alloys.

关键词： High-entropy alloy Antibacterial property Corrosion resistance Mechanical property

Prevalent false positives of azoospermia factor a （AZFa） microdeletions caused by single-nucleotide polymorphism rs72609647 in the sY84 screening of male infertility

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Asian Journal of Andrology 2011年第6期13卷 877-880页

作者： Qing Wu Guo-Wu Chen Tao-Fei Yan Hui Wang Yu-Ling Liu Zheng Li Shi-Wei Duan Fei Sun Yun Feng Hui-Juan Shi Reproductive Medical Center Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China Shanghai Jiai Genetics and IVF Institute Center of China-USA Shanghai 200011 China Department of Obstetrics and Gynecology Second Military Medical University Shanghai 200433 China China National Population and Family Planning key Laboratory of Contraceptive Drugs and Devices Shanghai Institute of Planned Parenthood Research Shanghai 200032 China Shanghai Human Sperm Bank Shanghai Institute of Andrology Renji Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200001 China School of Medicine Ningbo University Ningbo 315033 China Laboratory for Reproductive Biology School of Life Science University of Science and Technology of China Hefei 230026 China

Multiplex polymerase chain reaction （PCR） has been widely used to detect Y-chromosome micredeletions, which is one of the major causes of male infertility. Both the European Academy of Andrology （EAA） and the European Molecular Genetics Quality Network （EMQN） have recommended the use of sY84 and sY86 markers for the detection of azoospermia factor a （AZFa） microdeletion during DNA testing for male infertility. In this study, a large-scale analysis of AZF microdeletion in a total of 630 Chinese males, including healthy semen donors （n=200）, infertile males with normal sperm count （n=226） and patients with either nonobstructive azoospermia or severe oligozoospermia （n=204）, was performed. A series of nine sequence-tagged site （STS） markers from the AZF region of the Y chromosome was used to detect microdeletions. All primers were designed based on the recommendations of the National Center for Biotechnology Information. An unusually high incidence （73/630, 11.6%） of sY84-absent but sY86-present genotypes was observed in the AZFa microdeletion screening. Sequencing the sY84-flanking region revealed a total of 73 patients with sY84-absent but sY86-present genotypes have a T-to-G transversion at the fifth base from the 5＇ end of the reverse sY84 primer. These prevalent false positives, which were not only observed in infertile men, but also observed in donors, resulted from a single-nucleotide polymorphism （SNP） named rs72609647 in the targeting sequence of the reverse sY84 primer. Our study suggests that a pre-screening of existence of rs72609647 polymorphism can prevent the frequent false positive results of AZFa microdeletions detection in the infertile Chinese males. Given the SNP rs72609647 was recently found in a deep sequencing of a Chinese individual, the current EAA and EMQN standards may need to be scrutinized among different populations to avoid the potential genetic variations in the primer binding sequences.

关键词： male infertility multiplex polymerase chain reaction rs72609647 single-nucleotide polymorphism sY84 Y-chromosomemicrodeletion

Light-responsive organic artificial enzymes:Material designs and bio-applications

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Nano research 2023年第1期16卷 117-126页

作者： Weili Wang Qing Shen Hao Cai Leichen Wang Jinjun Shao Wenjun Wang Xiaochen Dong key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816China School of Physical Science and Information Technology Liaocheng UniversityLiaocheng 252059China

As significant biocatalysts,natural enzymes have exhibited a vast range of applications in biocatalytic ***,the“always-on”natural enzyme activity is not beneficial for the regulation of catalytic processes,which limits their ***,it has been extensively reported that various organic artificial enzymes exhibit prominent absorption and controlled activity under illumination,which not only creates a series of light-responsive catalytic platforms but also plays a key role in biosensing and biomedical *** provide novel ideas for the design of artificial enzymes,we conduct this review to highlight the recent progress of light-responsive organic artificial enzymes(LOA-Enz).The specific photoresponse mechanism and various bio-applications of LOA-Enz are also presented in ***,the remaining challenges and future perspectives in this field are discussed.

关键词： light-response organic artificial enzymes catalytic activity bio-applications

High-entropy(Sm_(0.2)Eu_(0.2)Gd_(0.2)Dy_(0.2)Er_(0.2))_(2)Hf_(2)O_(7) ceramic with superb resistance to radiation-induced amorphization

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Journal of Materials Science & Technology 2023年第24期155卷 1-9页

作者： Jingxin Wu Meng Zhang Zhanqiang Li Minzhong Huang Huiming Xiang Liyan Xue Zhengming Jiang Zhigang Zhao Lianfeng Wei Yong Zheng Fan Yang Guang Ran Yanchun Zhou Heng Chen School of Rare Earths University of Science and Technology of China Hefei 230026 China Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou 341000 China Xiamen Institute of Rare Earth Materials Haixi Institute Chinese Academy of Sciences Xiamen 361021 China Fujian Province Joint Innovation key Laboratory of Fuel and Materials in Clean Nuclear Energy System Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108 China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials & Processing Technology Beijing 100076 China The key Nuclear Fuel and Nuclear Materials Laboratory of China Nuclear Power Institute of China Chengdu 610213 China China Rare Earth Group Co. Ltd. Chengdu 610213 China College of Energy Xiamen University Xiamen 361102 China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China

Nuclear engineering materials are required to possess outstanding extreme environmental tolerance and irradiation resistance.A promising novel pyrochlore-type of(Sm_(0.2)Eu_(0.2)Gd_(0.2)Dy_(0.2)Er_(0.2))2 Hf_(2)O_(7)high-entropy ceramic(HE-RE2 Hf_(2)O_(7))for control rod was prepared by solid-state reaction *** ion irradiation of HE-RE_(2) Hf_(2)O_(7)with 400 keV Kr+at 400℃was investigated using a 400 kV ion implanter and compared with single-component pyrochlore Gd2 Hf_(2)O_(7)to evaluate the irradiation *** HE-RE2 Hf_(2)O_(7),the phase transition from pyrochlore to defective fluorite is revealed after irradiation at 60 *** irradiation at 120 dpa,it maintained crystalline,which is comparable to Gd2 Hf_(2)O_(7)but superior to the titanate pyrochlores previously ***,the lattice expansion of HE-RE2 Hf_(2)O_(7)(_(0.2)2%)is much lower than that of Gd2 Hf_(2)O_(7)(0.62%),indicating excellent irradiation damage *** tests displayed an irradiation-induced increase in hardness and a decrease in elastic modulus by about 2.6%.Irradiation-induced segregation of elements is observed on the surface of irradiated *** addition,HE-RE2 Hf_(2)O_(7)demonstrates a more sluggish grain growth rate than Gd2 Hf_(2)O_(7)at 1200℃,suggesting better high-temperature *** linear thermal expansion coefficient of HE-RE2 Hf_(2)O_(7)is 10.7×10-6 K-1 at 298–1273 *** general,it provides a new strategy for the design of the next advanced nuclear engineering materials.

关键词： High-entropy ceramic Rare earth hafnate Ion irradiation Amorphization resistance High temperature stability Nuclear safety