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Science China Materials 2021年第4期64卷 999-1006页

作者： li-mei shang Jun Jiang Shu-Hong Yu Division of Nanomaterials&Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleCAS Center for Excellence in NanoscienceHefei Science Center of CASDepartment of ChemistryUniversity of Science and Technology of ChinaHefei 230026China

Magnesium calcite(Mg-calcite)mesocrystal is widespread in the biominerals with specific *** now,it remains challenging to obtain Mg-calcite mesocrystals without organic additives and the formation mechanism of Mg-calcite mesocrystals in the ocean is not clear *** report here the synthesis of corn-like Mg-calcite mesocrystals from pure amorphous calcium carbonate(ACC)via a facile method only by using Ca^(2+)and Mg^(2+).The obtained Mg-calcite is composed of many nanocubes with common crystallographic orientation,which shows very good single crystal *** the crystallizing procedure,the ACC nanospheres rapidly agglomerate into Mg-calcite corn-like mesocrystal by oriented attachment(OA)in a certain direction,which belongs to the non-classical *** this method,the molar ratio of Ca^(2+)and Mg^(2+)plays a vital role in the whole crystallization procedure,which may shed a new light on disclosing the mechanism behind for the effect of seawater in the formation of biological Mg-calcite in nature.

关键词： calcium ion magnesium calcite mesocrystal amorphous calcium carbonate seawater

Nanograded artificial nacre with efficient energy dissipation

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The Innovation 2023年第6期4卷 76-82页

作者： Yu-Feng Meng Cheng-Xin Yu li-Chuan Zhou li-mei shang Bo Yang Qing-Yue Wang Xiang-Sen Meng li-Bo Mao Shu-Hong Yu Department of Chemistr New Comerstone Science LaboratoryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei 230031China Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China School of Mechanical Engineering Hefei University of TechnologyHefei 230009China Institute of Innovative Materials Department of Materials Science and EngineeringDepatment of ChemistrySouthem University of Science and TechnologyShenzhen 518055China

The renowned mechanical performance of biological ceramics can beattributed to their hierarchical structures,wherein structural features atthe nanoscale play a crucial ***,nanoscale features,such asnanogradients,have rarely been incorporated in biomimetic ceramicsbecause of the challenges in simultaneously controlling the materialstructure at multiple length ***,we report the fabrication of artificial nacre with graphene oxide nanogradients in its aragonite plateletsthrough a matrix-directed mineralization *** gradients areformed via the spontaneous accumulation of graphene oxide nanosheetson the surface of the platelets during the mineralization process,whichthen induces a lateral residual stress field in the *** tests and mercury intrusion porosimetry demonstrate that the material's energy dissipation is enhanced both intrinsically and extrinsicallythrough the compressive stress near the platelet *** energydissipation density reaches 0.159±0.007 nJ/μm^(3),and the toughnessamplification is superior to that of the most advanced cer ***-ical simulations also agree with the finding that the stress field not ablycontributes to the overall energy *** work demonstratesthat the energy dissipation of biomimetic ceramics can be furtherincreased by integrating design principles spanning multiple *** strategy can be readily extended to the combinations of other struc-tural models for the design and fabrication of structural ceramics withcustomized and optimized performance.

关键词： ceramics artificial energy

Synthesis of PdS_(x)- Mediated Polydymite Heteronanorods and Their Long-Range Activation for Enhanced Water Electroreduction

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Research 2019年第1期2019卷 686-696页

作者： Qiang Gao Rui Wu Yang liu Ya-Rong Zheng Yi li li-mei shang Yi-Ming Ju Chao Gu Xu-Sheng Zheng Jian-Wei liu Jun-Fa Zhu Min-Rui Gao Shu-Hong Yu Division of Nanomaterials&Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleCAS Center for Excellence in NanoscienceHefei Science Center of CASCollaborative Innovation Center of Suzhou Nano Science and TechnologyDepartment of ChemistryUniversity of Science and Technology of ChinaHefei 230026China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China Dalian National Laboratory for Clean Energy Dalian 116023China

Material interfaces permit electron transfer that modulates the electronic structure and surface properties of catalysts,leading to radically enhanced rates for many important *** conventional thoughts,the nanoscale interfacial interactions have been recently envisioned to be able to afect the reactivity of catalysts far from the ***,demonstration of such unlocalized alterations in existing interfacial materials is rare,impeding the development of new *** report the observation of unprecedented long-range activation of polydymite Ni_(3)S_(4) nanorods through the interfacial interaction created by PdS_(x) nanodots(dot-on-rod structure)for high-performance water catalytic *** results show that this local interaction can activate Ni3S4 rods with length even up to 25 nanometers due to the tailored surface electronic *** anticipate that the long-range efect described here may be also applicable to other interfacial material systems,which will aid the development of newly advanced catalysts for modern energy devices.

关键词： structure interfacial interaction

Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： mei Zhang Wenhao li Yangfei Chen Yang Jiang Xiaofei Guo Han Dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

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图式理论与英语听力教学

襄樊职业技术学院学报 2007年第1期6卷 60-62页

作者：李尚梅襄樊职业技术学院外语系湖北襄樊441021

本文以图式理论为依据,认为英语听力理解过程中信息的处理模式有两种:即“自上而下”和“自下而上;”听者的背景知识即图式知识在听力理解过程中起着重要作用。本文重点探讨了图式理论在听力教学中的运用。

关键词：图式理论听力理解自下而上自上而下背景知识

浅谈《高职综合英语》课程实践教学体系构建——湖北省高校省级教学改革研究项目《高职综合英语》课程实践教学体系成果介绍

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襄阳职业技术学院学报 2019年第3期18卷 133-136页

作者：李尚梅襄阳职业技术学院旅游与艺术学院

《高职综合英语》课程是英语类专业(商务英语专业、英语教育专业、应用英语专业)的核心基础课,主要培养学生的英语语言能力。本项目主要研究英语类专业的人才培养目标和《高职综合英语》的课程目标、该课程实践教学内容,构建了《高职综... 详细信息

《高职综合英语》课程是英语类专业(商务英语专业、英语教育专业、应用英语专业)的核心基础课,主要培养学生的英语语言能力。本项目主要研究英语类专业的人才培养目标和《高职综合英语》的课程目标、该课程实践教学内容,构建了《高职综合英语》课程的实践教学体系,并运用于实践教学中,从而提高该课程的教学质量,提高学生的英语语言能力以及课程教师团队的教学水平和实践能力。

关键词：高职综合英语英语语言能力实践教学体系实践能力

Study of oxymatrine on myocardial ischemic signaling mediated by P2X3 receptors in rat superior cervical ganglia

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Study of oxymatrine on myocardial ischemic signaling mediate...

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Gui-lin li,Shuang-mei liU,shang-Dong liANG~* Department of Physiology,Medical College of Nanchang University,Nanchang,Jiangxi 330006,China

Objective Blood pressure and sympathetic nerve activity are enhanced by signaling of myocardial ischemic(M1)injury mediated by P2X receptors in rat superior cervical ganglia(SCG).Oxymatrine is a major alkaloid component obtained from sophora roots and has pharmacological effects,e.g.,antiulcer,anti-inflammatory, antiarrhythmic and antitumor *** present study is aimed to explore the effects of oxymatrine(Oxy)on the transmission of myocardial ischemic signalling mediated by P2X receptors in rat *** Systolic blood pressure and heart rate were measured by the non-invasive blood pressure *** expression levels of P2X mRNA and protein were analyzed by immunohistochemistry,in situ hybridization and western blotting in SCG ***(1)The systolic blood pressure and heart rate increased and the expression of P2X receptors upregulated in SCG neurons after myocardial ischemic injury.(2)Oxymatrine reduced the systolic blood pressure and heart rate in myocardial ischemic *** myocardial ischemic rats treated with oxymatrine,the expression levels of P2X mRNA and protein were lower than those in myocardial ischemic *** The myocardial ischemic injury induced an increase in the expression of P2X receptors in SCG *** expression of P2X receptors in SCG neurons subsequently leaded to the aggravated myocardial injury by enhancing blood pressure and sympathetic nerve *** may decrease the expression of P2X receptor and depress the aggravated myocardial injury.

关键词： superior cervical ganglia P2X3 receptor oxymatrine

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长沙市某酒店建筑能耗调查及分析

建筑节能 2010年第1期38卷 65-67页

作者：李尚梅傅俊萍长沙理工大学能源与动力工程学院长沙410114

对长沙市某酒店的建筑能耗进行了调查,分析了该酒店的用电情况及空调系统能耗。通过分析和测试表明:在整个建筑能耗中,空调能耗占到总能耗的50%左右;整个建筑的用电高峰和空调的用电高峰主要集中在6～8月;制冷系统实际运行和设计值偏差... 详细信息

对长沙市某酒店的建筑能耗进行了调查,分析了该酒店的用电情况及空调系统能耗。通过分析和测试表明:在整个建筑能耗中,空调能耗占到总能耗的50%左右;整个建筑的用电高峰和空调的用电高峰主要集中在6～8月;制冷系统实际运行和设计值偏差太大,实际制冷能力远低于额定值;水系统设计不合理,存在大流量小温差现象。指出了空调系统在设计、运行和管理方面存在的问题。在酒店的整个运行过程中节能潜力最大的是空调系统,空调电耗中又以制冷机和水泵影响最大。

关键词：建筑能耗空调能耗节能

罗格列酮对阿霉素致肾小球硬化症大鼠的尿蛋白排泌量及肾小球蛋白(synaptopodin)表达的影响

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中国临床药理学杂志 2010年第4期26卷 292-295页

作者：郭丽琴陶静莉李尚妹梁东唐德燊陈孝文刘华锋广东医学院附属医院肾病研究所广东湛江524001 山西省长治医学院附属医院肾内科长治046000

目的观察罗格列酮(胰岛素增敏药)对阿霉素致肾病大鼠的尿蛋白排泌量及肾小球蛋白表达的影响。方法用罗格列酮治疗阿霉素诱导的局灶节段性肾小球硬化(FSGS)大鼠模型;用双缩脲法动态检测大鼠24h尿蛋白量;分别用荧光实时定量PCR和免疫组织... 详细信息

目的观察罗格列酮(胰岛素增敏药)对阿霉素致肾病大鼠的尿蛋白排泌量及肾小球蛋白表达的影响。方法用罗格列酮治疗阿霉素诱导的局灶节段性肾小球硬化(FSGS)大鼠模型;用双缩脲法动态检测大鼠24h尿蛋白量;分别用荧光实时定量PCR和免疫组织化学法检测大鼠肾组织synaptopodin mRNA和蛋白表达量。结果罗格列酮能显著减缓FSGS大鼠尿蛋白排泄量的增加(P0.05);FSGS大鼠肾组织蛋白表达量与尿蛋白排泄量呈负相关(P<0.01)。结论罗格列酮能减轻FSGS模型尿蛋白排泌量,其机制可能部分与维持足细胞足突肌动蛋白微丝骨架系统的稳定有关。

关键词：罗格列酮局灶节段性肾小球硬化症大鼠模型尿蛋白排泌量肾小球硬化

狼疮性肾炎患者肾组织Epstein—Barr病毒感染状况及其致病作用初探

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中华微生物学和免疫学杂志 2009年第8期29卷 737-741页

作者：余晓霞刘华锋陶静莉杨陈李尚妹陈孝文梁东唐德燊广东医学院附属医院肾病研究所湛江524001

目的检测狼疮性肾炎（LN）患者肾组织Epstein—Barr病毒（EBV）基因及蛋白的表达，探讨EBV感染与LN发病的关系。方法收集2007年4月至2008年4月经临床及肾活检确诊为LN的患者肾组织58例作为观察组，同期7例非肾性血尿患者肾组织及37例微... 详细信息

目的检测狼疮性肾炎（LN）患者肾组织Epstein—Barr病毒（EBV）基因及蛋白的表达，探讨EBV感染与LN发病的关系。方法收集2007年4月至2008年4月经临床及肾活检确诊为LN的患者肾组织58例作为观察组，同期7例非肾性血尿患者肾组织及37例微小病变肾病患者肾组织作为对照组，免疫组化法检测EBV潜伏期膜蛋白1（EBVLMP1），原位杂交法检测EBV编码的RNA（EBER）在。肾组织中的表达情况。结果应用免疫组化法检测EBVLMPl与应用原位杂交法检测EBER的结果高度吻合（等效检验P=1．00，差异无统计学意义；K系数=0．817，K系数检验P=0．00）。LN组肾组织EBER和EBVLMPl表达阳性率分别为60．3％（35／58）和58．6％（34／58），而正常组分别为0．0％（0／7）和14．3％（1／7），微小病变组分别为16．2％（6／37）和18．9％（7／37），LN组阳性率显著高于正常组及微小病变型肾病组（P=0．00），而微小病变型肾病组与正常组比较差异无统计学意义（P〉0．05）。LN组肾组织EBER和EBVLMPl表达阳性率在不同性别之间、初发和复发之间、有无合并感染之间以及不同病理类型之间差异均无统计学意义（P〉0．05）。肾组织EBER和EBVLMP1表达阳性的LN患者的血清中anti—Sm—Ab阳性率显著高于两标记物表达阴性的LN患者（EBER：34．3％VS8．7％，EBVLMP1：35．3％VS9．1％，P均〈0．05）。结论肾组织EBV感染可能参与了LN的发病，其机制可能部分与诱导机体产生自身抗体anti—Sm—Ab有关。

关键词：狼疮性肾炎 Epstein—Barr病毒自身抗体