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Journal of Materials Science & Technology 2021年第33期92卷 109-119页

作者： meiying lv Xuchao Chen Zhenxin Li Min Du Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China

980 high-strength steel has been widely used in marine engineering structures due to its high strength and ***,it is easily affected by the harsh environmental conditions(such as the presence of sulfate-reducing bacteria,SRB),leading to the risk of stress corrosion cracking(SCC).In this paper,the effects of SRB and its metabolites on hydrogen permeation and SCC mechanism of 980 steel in seawater solution were investigated by slow strain rate tensile test,scanning electron microscope,Xray energy spectroscopy,Raman spectroscopy and Devanathan-Stachurski double electrolytic *** demonstrated that the SCC susceptibility of 980 steel was promoted in the presence of SRB,which was related to the cultivation time of the *** SRB were cultivated for 3 d and 6 d,the SCC mechanism was controlled by hydrogen-induced cracking(HIC);while the cultivation time extended to 11 d,the SCC of 980 steel was under the combined effect of the anodic dissolution(AD) and HIC *** cultivated for 16 d,the SCC of 980 steel was caused by the dominant *** the SRB accelerated hydrogen permeation under cathodic depolarization process and SRB assisted AD(pitting corrosion)played an enhancing role in promoting SCC susceptibility of 980 steel.

关键词： Stress corrosion cracking Sulfate-reducing bacteria Microbiologically influenced corrosion 980 High-strength steel Seawater

Corrosion of X65 steel by Pseudomonas sp. in planktonic and sessile states and inhibition effect of cathodic polarization

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Corrosion Communications 2022年第4期8卷 58-69页

作者： meiying lv Zhenxin Li Min Du Guannan Li Jian Wang Ting Xu Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education College of Chemistry and Chemical Engineering Ocean University of China

In harsh marine environment, corrosion is a serious problem, among which microbiologically influenced corrosion is particularly common and complex. This work studied corrosion of X65 steel by planktonic and sessile iron oxidizing bacteria(IOB), i.e. Pseudomonas sp. isolated from coastal water of Qingdao, and inhibition effect of cathodic polarization. Results demonstrate that both the planktonic and sessile IOB caused the corrosion of X65 steel by promoting the oxidation of ferrous ions, but the contribution of sessile cells was far greater than that of planktonic cells. Cathodic polarization kills sessile cells on the metal surface and prevent attachment of IOB. With a negative shift of the cathodic potential, the inhibition effect was enhanced. Cathodic polarization altered interface properties of X65 steel, affecting adhesion and corrosion process of IOB cells. However, when X65 steel was sufficiently polarized to-1050 mV vs. SCE, IOB produced more extracellular polymeric substances to resist stimulation by an external electric field. Therefore, cathodic polarization could not completely remove sessile IOB cells, and pitting corrosion existed on the metal surface.

关键词： Cathodic polarization Microbiologically influenced corrosion Iron oxidizing bacteria Seawater X65 steel

Sequential activation of uterine epithelial IGF1R by stromal IGF1 and embryonic IGF2 directs normal uterine preparation for embryo implantation

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Journal of Molecular Cell Biology 2021年第9期13卷 646-661页

作者： Chan Zhou meiying lv Peike Wang Chuanhui Guo Zhangli Ni Haili Bao Yedong Tang Han Cai Jinhua Lu Wenbo Deng Xiaoyu Yang Guoliang Xia Haibin Wang Chao Wang Shuangbo Kong State Key Laboratory of Agrobiotechnology College of Biological SciencesChina Agricultural UniversityBeijingChina'2 Fujian Provincial Key Laboratory of Reproductive Health ResearchSchool of MedicineXiamen UniversityXiamenChina'3 Fuzhou Hospital of Traditional Chinese Medicine Affiliated to Fujian University of Traditional Chinese MedicineFuzhouChina'4 Department of Obstetrics and GynecologyThe First Affiliated Hospital of Xiamen UniversityXiamenChina'5 Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western ChinaCollege of Life ScienceNingXia UniversityYinchuanChina

Embryo implantation in both humans and rodents is initiated by the attachment of a blastocyst to the uterine *** blastocyst attachment,the uterine epithelium needs to transform at both the structural and molecular levels first,and then initiate the interaction with *** perturbation during this process will result in implantation failure or long-term adverse pregnancy *** steroid hormones,which function through nuclear receptors,combine with the local molecules produced by the uteri or embryo to facilitate *** insulin-like growth factor(IGF)signaling has been reported to play a vital role during ***,its physiological function during implantation remains *** study revealed that mice with conditional deletion of Igflr gene in uteri suffered from subfertility,mainly due to the disturbed uterine receptivity and abnormal embryo ***,we uncovered that in response to the nidatory estrogen on D4 of pregnancy,the epithelial IGF1R,stimulated by the stromal cell-produced IGF1,facilitated epithelial STAT3 activation to modulate the epithelial ***,embryonic derived IGF2 could activate both the epithelial ERK1/2 and STAT3 signaling through IGF1R,which was critical for the transcription of Cox2 and normal attachment *** brief,our data revealed that epithelial IGF1R was sequentially activated by the uterine stromal IGF1 and embryonic IGF2 to guarantee normal epithelium differentiation during the implantation process.

关键词： IGF1R IGF1 IGF2 uterine epithelium implantation blastocyst

Enhancement of the formic acid electrooxidation activity of palladium using graphene/carbon black binary carbon supports

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Chinese Journal of Catalysis 2017年第5期38卷 939-947页

作者： meiying lv Wenpeng Li Huiling Liu Wenjuan Wen Guang Dong Jinghua Liu Kaichen Peng Institute of Advanced Energy Materials and Chemistry Key Lab of Fine Chemicals in Universities of Shandong School of Chemistry and Pharmaceutical Engineering Qilu University of Technology Jinan 250353 Shandong China

Combinations of graphene(Gr)and carbon black(C)were employed as binary carbon supports to fabricate Pd‐based electrocatalysts via one‐pot co‐reduction with Pd2+.The electrocatalytic performance of the resulting Pd/Gr‐C catalysts during the electrooxidation of formic acid was assessed.A Pd/Gr0.3C0.7(Gr oxide:C=3:7,based on the precursor mass ratio)electrocatalyst exhibited better catalytic performance than both Pd/C and Pd/Gr *** current density generated by the Pd/Gr0.3C0.7catalyst was as high as102.14mA mgPd?1,a value that is approximately3times that obtained from the Pd/C(34.40mA mgPd?1)and2.6times that of the Pd/Gr material(38.50mA mgPd?1).The anodic peak potential of the Pd/Gr0.3C0.7was120mV more negative than that of the Pd/C and70mV more negative than that of the Pd/*** electron microscopy images indicated that the spherical C particles accumulated on the wrinkled graphene surfaces to form C cluster/Gr hybrids having three‐dimensional nanostructures.X‐ray photoelectron spectroscopy data confirmed the interaction between the Pd metal and the binary Gr‐C *** Pd/Gr0.3C0.7also exhibited high stability,and so is a promising candidate for the fabrication of anodes for direct formic acid fuel *** work demonstrates a simple and cost‐effective method for improving the performance of Pd‐based electrocatalysts,which should have potential industrial applications.

关键词： Binary carbon support Palladium Graphene Carbon black Formic acid oxidation Fuel cell

海水环境中组合电位极化对铁氧化菌腐蚀的影响

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中国腐蚀与防护学报 2022年第2期42卷 211-217页

作者：李振欣吕美英杜敏中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室青岛266100

采用电化学测试、扫描电镜、激光共聚焦显微镜、Raman光谱等手段研究了-850 mV (vs. SCE,下同)转-1050 mV和-1050 mV转-850 m V组合电位阴极极化对X65钢在含铁氧化菌(IOB)的海水中腐蚀的影响。结果表明:两种组合电位极化都对IOB腐蚀有... 详细信息

采用电化学测试、扫描电镜、激光共聚焦显微镜、Raman光谱等手段研究了-850 mV (vs. SCE,下同)转-1050 mV和-1050 mV转-850 m V组合电位阴极极化对X65钢在含铁氧化菌(IOB)的海水中腐蚀的影响。结果表明:两种组合电位极化都对IOB腐蚀有一定抑制作用;极化与开路电位下X65钢腐蚀产物种类差别不大,含量有区别。-1050 mV极化可以抑制IOB附着但不能完全去除已形成的生物膜,这是-1050 mV转-850 m V极化保护效果优于-850 mV转-1050 m V极化的原因。

关键词：微生物腐蚀铁氧化菌组合电位阴极极化海水环境附着

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一种多站标靶点云整体配准算法

武汉大学学报（信息科学版） 2014年第10期39卷 1189-1193页

作者：杨荣华吕美英花向红重庆大学土木工程学院四川重庆400030 重庆师范大学数学学院四川重庆400047 武汉大学测绘学院湖北武汉430079

针对普通多站标靶点云配准方法需进行基于传统测量设备的控制测量问题,提出了一种新的多站标靶点云配准方法。该方法使用三维激光扫描仪和卷尺同时完成点云数据的采集和控制测量外业工作,并将经典测边网平差理论引入到多站标靶点云配准... 详细信息

针对普通多站标靶点云配准方法需进行基于传统测量设备的控制测量问题,提出了一种新的多站标靶点云配准方法。该方法使用三维激光扫描仪和卷尺同时完成点云数据的采集和控制测量外业工作,并将经典测边网平差理论引入到多站标靶点云配准领域,给出了相应误差方程的构建方法。实验结果不仅表明了该方法的有效性,而且证明了三维激光扫描技术应用于控制测量的可行性。

关键词：地面三维激光扫描多站点云配准测边网标靶

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Sylvester级数展式中例外集的维数

应用数学 2024年第2期37卷 373-376页

作者：吕美英薛文重庆师范大学数学科学学院重庆401331

在2018年,本文第一作者研究了实数的Sylvester级数展式中部分商的相对增长速度问题,并给出以一般函数速度增长的例外集的Hausdorff维数的下界.本文我们将进一步研究该集合,并精确刻画它的Hausdorff维数.同时作为应用,我们给出以多项式... 详细信息

在2018年,本文第一作者研究了实数的Sylvester级数展式中部分商的相对增长速度问题,并给出以一般函数速度增长的例外集的Hausdorff维数的下界.本文我们将进一步研究该集合,并精确刻画它的Hausdorff维数.同时作为应用,我们给出以多项式和指数速度增长时,相关例外集的维数结果.

关键词： Sylvester级数展式例外集 Hausdorff维数

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培养基对微生物腐蚀的影响

中国腐蚀与防护学报 2021年第6期41卷 757-764页

作者：吕美英李振欣杜敏万紫轩中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室青岛266100

针对培养基对微生物及其腐蚀行为的影响进行了详细论述。首先,对不同的培养基类型进行了分类,并归纳了主要营养元素的常见来源及其生理功能。同时,对常见腐蚀菌的培养基种类进行了简单概述。然后,着重探讨了培养基中不同营养组分(如碳... 详细信息

针对培养基对微生物及其腐蚀行为的影响进行了详细论述。首先,对不同的培养基类型进行了分类,并归纳了主要营养元素的常见来源及其生理功能。同时,对常见腐蚀菌的培养基种类进行了简单概述。然后,着重探讨了培养基中不同营养组分(如碳源、氮源以及无机盐组分PO_(4)^(3-)、SO_(4)^(2-)、Cl^(-)、Na^(+)、K^(+)、Ca^(2+)和Fe^(2+))对细菌生长特性以及腐蚀过程的影响。最后,展望了优化培养基组成对探究微生物腐蚀机理的重要性。

关键词：微生物腐蚀培养基碳源氮源无机盐生长特性

One-step preparation of branched PEG functionalized AIE-active luminescent polymeric nanoprobes

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Science China Chemistry 2016年第8期59卷 1003-1009页

作者： Jun Chu Qiulan lv Chunliang Guo Dazhuang Xu Ke Wang meiying Liu Hongye Huang Xiaoyong Zhang Yen Wei Department of Hepatobiliary Surgery Affiliated Hospital of Logistics University of PAPF Tianjin 300162 China Jiangxi Provincial Key Laboratory of New Energy Chemistry Department of Chemistry Nanchang University Nanchang 330031 China Tsinghua Center for Frontier Polymer Research Department of Chemistry Tsinghua University Beijing 100084 China

The synthesis of amphiphilic aggregation-induced emission （ALE） dyes based organic nanoparticles has recently attracted in- creasing attention in the biomedical fields. These AlE dyes based nanoparticles could effectively overcome the aggregation caused quenching effect of conventional organic dyes, making them promising candidates for fabrication of ultrabright organic luminescent nanomaterials. In this work, AIE-active luminescent polymeric nanoparticles （4-NH2-PEG-TPE-E LPNs） were facilely fabricated through Michael addition reaction between tetraphenylethene acrylate （TPE-E） and 4-arm-poly（ethylene glycol）-amine （4-NH2-PEG） in rather mild ambient. The 4-NH2-PEG can not only endow these AlE-active LPNs good water dispersibility, but also provide functional groups for further conjugation reaction. The size, morphology and luminescent prop- erties of 4-NH2-PEG-TPE-E LPNs were characterized by a series of techniques in detail. Results suggested that these AlE-active LPNs showed spherical morphology with diameter about 100-200 nm. The obtained 4-NH2-PEG-TPE-E LPNs display high water dispersibility and strong fluorescence intensity because of their self assembly and AlE properties of TPE-E. Biological evaluation results demonstrated that 4-NH2-PEG-TPE-E LPNs showed negative toxicity toward cancer cells and good fluorescent imaging performance. All of these features make 4-NHz-PEG-TPE-E LPNs promising candidates for biolog- ical imaging and therapeutic applications.

关键词： aggregation-induced emission branched PEG Michael addition reaction biological imaging

Biodegradable calcium sulfide-based nanomodulators for H_(2)S-boosted Ca^(2+)-involved synergistic cascade cancer therapy

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Acta Pharmaceutica Sinica B 2022年第12期12卷 4472-4485页

作者： Chuchu Lin Chenyi Huang Zhaoqing Shi Meitong Ou Shengjie Sun Mian Yu Ting Chen Yunfei Yi Xiaoyuan Ji Feng lv meiying Wu Lin Mei School of Pharmaceutical Sciences(Shenzhen) Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China Tianjin Key Laboratory of Biomedical Materials Key Laboratory of Biomaterials and Nanotechnology for Cancer ImmunotherapyInstitute of Biomedical EngineeringChinese Academy of Medical Sciences and Peking Union Medical CollegeTianjin 300192China Academy of Medical Engineering and Translational Medicine Medical CollegeTianjin UniversityTianjin 300072China

Hydrogen sulfide(H_(2)S)is the most recently discovered gasotransmitter molecule that activates multiple intracellular signaling pathways and exerts concentration-dependent antitumor effect by interfering with mitochondrial respiration and inhibiting cellular ATP *** by the fact that H_(2)S can also serve as a promoter for intracellular Ca^(2+)influx,tumor-specific nanomodulators(I-CaS@PP)have been constructed by encapsulating calcium sulfide(CaS)and indocyanine green(ICG)into methoxy poly(ethylene glycol)-b-poly(lactide-co-glycolide)(PLGA-PEG).I-CaS@PP can achieve tumor-specific biodegradability with high biocompatibility and pH-responsive H_(2)S *** released H_(2)S can effectively suppress the catalase(CAT)activity and synergize with released Ca^(2+)to facilitate abnormal Ca^(2+)retention in cells,thus leading to mitochondria destruction and amplification of oxidative *** dysfunction further contributes to blocking ATP synthesis and downregulating heat shock proteins(HSPs)expression,which is beneficial to overcome the heat endurance of tumor cells and strengthen ICG-induced photothermal *** a H_(2)S-boosted Ca^(2+)-involved tumor-specific therapy exhibits highly effective tumor inhibition effect with almost complete elimination within 14-day treatment,indicating the great prospect of CaS-based nanomodulators as antitumor therapeutics.

关键词： Calcium sulfide Hydrogen sulfide Calcium overload Oxidative stress Photothermal therapy Biodegradability Controllable release Nanomodulators