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The role of strain in oxygen evolution reaction

Journal of Energy Chemistry 2024年第6期93卷 322-344,I0009页

作者： Zihang Feng Chuanlin Dai Zhe Zhang Xuefei Lei wenning Mu Rui Guo Xuanwen liu Junhua You School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina School of Materials Science and Technology Shenyang University of TechnologyShenyang 110870LiaoningChina

The oxygen evolution reaction(OER)is a crucial step in metal-air batteries and water splitting technologies,playing a significant role in the efficiency and achievable heights of these two technologies.However,the OER is a four-step,four-electron reaction,and its slow kinetics result in high overpotentials,posing a challenge.To address this issue,numerous strategies involving modified catalysts have been proposed and proven to be highly efficient.In these strategies,the introduction of strain has been widely reported because it is generally believed to effectively regulate the electronic structure of metal sites and alter the adsorption energy of catalyst surfaces with reaction intermediates.However,strain has many other effects that are not well known,making it an important yet unexplored area.Based on this,this review provides a detailed introduction to the various roles of strain in OER.To better explain these roles,the review also presents the definition of strain and elucidates the potential mechanisms of strain in OER based on the d-band center theory and adsorption volcano plot.Additionally,the review showcases various ways of introducing strain in OER through examples reported in the latest literature,aiming to provide a comprehensive perspective for the development of strain engineering.Finally,the review analyzes the appropriate proportion of strain introduction,compares compressive and tensile strain,and examines the impact of strain on stability.And the review offers prospects for future research directions in this emerging field.

关键词： Oxygen evolution reaction Strain generation Tensile strain Compressive strain Strain mechanism Strain effects

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Construction of a bivalent vaccine candidate against HAdV4/HAdV7 based on capsid-display strategy via Red-homologous recombination and counter-selection methodology

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Biosafety and Health 2024年第2期6卷 70-79页

作者： Peng Wang Yunting Shao Xichun Yang wenning Zhang Jianguang Zhou Fang Huang Shuang liu Jiping Zheng Chengjun Wu Shanhu Li Department of Cell Engineering Bejing Institute of BiotechnologyBejing 100850China School of Basic Medical Sciences Faculty of MedicineDalian University of TechnologyDalian 116024China Lab of Microbiological Engineering School of Life and Health SciencesHainan UniversityHaikou 570228China

Human adenoviruses(HAdvs)are major respiratory pathogens.Specifically,human adenovirus type 4(HAdV4)and human adenovirus type 7(HAdV7)are known for causing fever and pneumonia,with docu-mented cases of fatalities among the population.In recent years,HAdV4/HAdv7 has been implicated in caus-ing substantial outbreaks,leading to increased morbidity in multiple countries.Most HAdV4 and HAdV7 infections have been reported in North America,Asia,Europe,Africa,South America,Oceania,and the Middle East.Most fatalities occurred in North America(the United States)and Asia(China and Singapore).Engineered recombinant adenoviruses have played a crucial role as vaccine vectors.In this study,we con-structed a recombinant adenovirus,Ad4ITRmut-Ad7E3,and evaluated it in vitro and in vivo.We observed that the replication rate of Ad4ITRmut-Ad7E3 was lower than that of the RI-67 strain,indicating that the mutation of inverted terminal repeats(ITRs)weakened the replication ability of HAdV4.Immunization of BALB/c mice with the bivalent Ad4ITRmut-Ad7E3 vaccine strain,administered by intraperitoneal injection and oral gavage,resulted in the elicitation of neutralizing antibodies targeting HAdV4 and HAdv7.This finding not only pro-vides a novel method and technique for the efficient construction of a polyvalent recombinant adenovirus vac-cine candidate against HAdV4 and HAdv7 but also against other prevalent adenovirus serotypes such as HAdV3,HAdV11,HAdV14,and HAdv55,from various regions.

关键词： Bivalent adenovirusvaccine Capsid-displaystrategy ITRs modification Hexonepitopereplacement

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The critical factors of photocatalytic H2 production from seawater by using TiO_(2)as photocatalyst

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Nano Research 2023年第4期16卷 4620-4624页

作者： Yaqian He Pengfei Li wenning liu Li An Dan Qu Xiayan Wang Zaicheng Sun Beijing Key Laboratory for Green Catalysis and Separation Center of Excellence for Environmental Safety and Biological EffectsFaculty of Environment and LifeBeijing University of TechnologyBeijing 100124China

The solar H_(2)generation directly from natural seawater is a sustainable way of green energy.However,it is limited by a low H_(2)generation rate even compared to fresh water.In this report,TiO_(2)is chosen as a model photocatalyst to disclose the critical factor to deteriorate the H_(2)generation rate from seawater.The simulated seawater(SSW),which is composed of eight ions(Na^(+),K^(+),Ca^(2+),Mg^(2+),Cl^(−),Br^(−),SO_(4)^(2−),and CO_(3)^(2−)),is investigated the effect of each ion on the H_(2)production.The results indicate that all ions have a negative effect at the same concentration as in the seawater except Br−.The CO_(3)^(2−)has the most serious deterioration,and the H_(2)production rate lowers near 40%even at[CO_(3)^(2−)]of 1.5 mmol·L^(−1).The H_(2)production rate can be recovered to 85%if the CO_(3)^(2−)is excluded from the SSW.To understand the reason,the zeta potential of the TiO_(2)treated with different ions aqueous solution reveals that the zeta potential decreases when it is treated with CO_(3)^(2−)and SO_(4)^(2−)due to they can adsorb on the surface of TiO_(2)nanoparticles.Fourier transform infrared(FTIR)and thermogravimetric analysis-mass spectroscopy(TGA-MS)further confirm that the adsorbed ion is mainly from CO_(3)^(2−).Since the pH of seawater is about 8.9 between pKa1(6.37)and pKa2(10.3)of H_(2)CO3,the CO_(3)^(2−)should exist in the form of HCO3−in the seawater.We proposed a simple method to remove the adsorbed HCO3−from the TiO_(2)surface by adjusting the pH below the pKa1.The results indicate that if a trace amount of HCl(adjusting pH~6.0)is added to the SSW,the H_(2)production rate can be recovered to 85%of that in pure water.

关键词： seawater H_(2)production rate adsorb ions pH

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三元软包锂离子电池放电过程扩散诱导应力与热应力对比研究

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储能科学与技术 2024年第4期13卷 1128-1141页

作者：王瑞梓刘训良豆瑞锋周文宁方娟北京科技大学能源与环境工程学院北京科技大学多模式工业储能技术研发中心北京100083

为了明晰锂离子电池在放电过程中产生的扩散诱导应力和热应力对电池的影响,使用Comsol Multiphysics 6.0建立了18.5 Ah软包NCM111锂离子电池的电化学-力-热耦合模型,基于该模型对不同放电倍率下电池的负极颗粒中心表面锂浓度差、扩散诱... 详细信息

为了明晰锂离子电池在放电过程中产生的扩散诱导应力和热应力对电池的影响,使用Comsol Multiphysics 6.0建立了18.5 Ah软包NCM111锂离子电池的电化学-力-热耦合模型,基于该模型对不同放电倍率下电池的负极颗粒中心表面锂浓度差、扩散诱导应力、热应力及膨胀行为进行了仿真分析。扩散诱导应力可通过一维电化学模型及其衍生的颗粒维度进行仿真分析,而热应力则需要通过三维固体力学和传热模型进行仿真。研究结果表明,随着放电倍率的增加,电池产生的扩散诱导应力和热应力都会增大,因此,低放电倍率有助于降低电池产生的应力。负极颗粒产生的扩散诱导应力与颗粒中心表面锂浓度差相关,颗粒中心与表面的锂浓度差随着放电过程的进行逐渐增大。将一维模型中的负极视为由无数负极颗粒组成的线段,放电前期,靠近隔膜端的颗粒中心与表面锂浓度差高于集流体端,放电后期则相反,这个变化发生的转折点在放电深度为60%~70%之间。这也意味着放电前期隔膜端的负极颗粒产生的扩散诱导应力大于集流体端的负极颗粒,也更容易破裂,而放电后期则相反。负极颗粒产生的扩散诱导应力大小为兆帕级,远高于电芯产生的大小为千帕级的热应力。同时,电芯产生的热应力和最大位移与电池温差呈线性关系,随着放电倍率的增加而增大。值得注意的是,与圆柱形电池不同,软包电池的极耳与电芯连接处会产生较大的热应力。本研究对比分析了软包NCM111锂离子电池放电过程产生的扩散诱导应力与热应力,为电极和电芯的制造及应力监测提供理论支撑。

关键词：三元软包锂电池多物理场耦合模型扩散诱导应力热应力

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激光熔覆CoCrFeNiTi高熵合金工艺优化及预测模型研究

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表面技术 2024年第11期53卷 205-216页

作者：吴文宁孙文磊刘志远于江通杨玉林黄勇新疆大学机械工程学院乌鲁木齐830017 新疆工程学院机电工程学院乌鲁木齐830091

目的探究激光熔覆工艺参数对CoCrFeNiTi高熵合金涂层质量及形貌的影响,实现激光熔覆CoCrFeNiTi高熵合金涂层形貌的精确控制。方法基于田口正交法,设计不同激光工艺参数下30CrMnSiA表面激光熔覆CoCrFeNiTi高熵合金实验,以激光功率、扫描... 详细信息

目的探究激光熔覆工艺参数对CoCrFeNiTi高熵合金涂层质量及形貌的影响,实现激光熔覆CoCrFeNiTi高熵合金涂层形貌的精确控制。方法基于田口正交法,设计不同激光工艺参数下30CrMnSiA表面激光熔覆CoCrFeNiTi高熵合金实验,以激光功率、扫描速度、送粉速率为影响因素,以涂层稀释率、高度、宽度、裂纹密度、宽高比为响应目标,通过方差和信噪比分析影响因素与响应目标的关系,并确定最优工艺参数,建立工艺参数与CoCrFeNiTi高熵合金涂层性能和形貌的支持向量回归预测模型。结果激光功率对熔覆层稀释率、宽度和裂纹密度的影响较大,且与熔覆层稀释率、高度、宽度、裂纹密度、宽高比呈正相关。扫描速度对涂层高度、裂纹密度和宽高比的影响较大,与涂层高度呈负相关,与涂层裂纹密度和宽高比呈正相关。送粉速率对熔覆层稀释率、高度和宽高比的影响较大,与熔覆层稀释率和高度呈负相关,与熔覆层宽高比呈正相关。得到了最优工艺参数,激光功率为600 W,扫描速度为18 mm/s,送粉速率为1.6 r/min。通过预测模型测试可知,熔覆层稀释率、高度、宽度、裂纹密度和宽高比预测模型的决定系数均大于0.93。结论基于支持向量回归的CoCrFeNiTi高熵合金涂层形貌预测模型的精度较高,能够实现CoCrFeNiTi高熵合金熔覆层形貌的精确预测,为熔覆层形貌的控制提供了新的思路。

关键词：激光熔覆 CoCrFeNiTi 工艺参数方差分析信噪比支持向量回归预测模型

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Model Interpretation Development: Analysis Design of Automatic Control System

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Journal of Software Engineering and Applications 2009年第2期2卷 116-121页

作者： Guohua Wu wenning liu Qiuhua Zheng Zhen Zhang 不详

Currently the development of automatic control system is mainly based on manual design. This has made the develop-ment process complicated and has made it difficult to guarantee system requirement. This paper presents a Model in-terpretation development architecture built on meta-models and model interpretation. In this modeling and developing process, different meta-models or domain models may be constructed in terms of various system requirements. Inter-preters are used to transform the meta-model into relevant domain model and generate some other formats from do-main models, typically with different semantic domains. An interpretation extension interface is introduced, which can be accelerated to develop the model interpreter. This development architecture can improve system reusability and en-hance development efficiency. Finally, an example is introduced to explain the advantage of method.

关键词： Meta-Model Model Interpretation Model-Based Design

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扬州面点翡翠烧麦制作工艺探析

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食品安全导刊 2024年第19期 156-158页

作者：兰锦赵莹莹刘文宁江苏旅游职业学院江苏扬州225100

翡翠烧麦是扬州面点代表品种之一,其制作工艺讲究,风味独特,深受当地食客和游客的喜爱。本文从扬州面点翡翠烧麦的面皮、馅心、造型、装饰、熟制和创新点方面进行探讨,结合行业要求,通过工艺分析以提升翡翠烧麦的风味和品质。

关键词：扬州面点翡翠烧麦工艺分析

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消化道出血ICD-10与ICD-11的对比研究

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现代医院 2024年第4期24卷 546-548,552页

作者：刘莉林佩珊李良景任文宁深圳市坪山区人民医院广东深圳518118 深圳市人民医院广东深圳518001 广西医科大学信息与管理学院广西南宁530000

从章节变化、编码结构、疾病名和重点分类等多维度对比分析消化道出血在ICD-10与ICD-11的差异,为ICD-11的推广使用和分类发展提供参考。消化道出血在ICD-10中主要分类于第十一章消化系统疾病章,在ICD-11主要分类于第十三章消化系统疾病... 详细信息

从章节变化、编码结构、疾病名和重点分类等多维度对比分析消化道出血在ICD-10与ICD-11的差异,为ICD-11的推广使用和分类发展提供参考。消化道出血在ICD-10中主要分类于第十一章消化系统疾病章,在ICD-11主要分类于第十三章消化系统疾病,对于消化道出血的症状分类于第二十一章:症状、体征或临床所见,不可归类在他处者。ICD-10使用共用亚目表示疾病性质与临床表现,ICD-11以簇编码的形式表达,并结合后组配表达疾病的病因和疾病性质,结合扩展码表达精细的解剖部位。消化道出血在ICD-11中分类更科学、编码更精确且扩展更弹性,更适应现代医学的发展和医院管理需求,因此加大ICD-11推广力度,对我国卫生事业发展和国际接轨具有重大意义。

关键词：消化道出血 ICD-10 ICD-11

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基于TG-FTIR-MS技术的烟叶角质层热解行为研究

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河南农业科学 2024年第2期53卷 171-180页

作者：李亚玲马戎丁为冯文宁徐波梁淼刘玉斌刘伟王兵乔学义中国烟草总公司郑州烟草研究院河南郑州450000 河北中烟工业有限责任公司河北石家庄050000 四川中烟工业有限责任公司四川成都610000 郑州轻工业大学食品与生物工程学院河南郑州450000

为探究烟叶角质层热解行为及其在热解过程中气相产物释放规律,采用酶法、化学方法分离烟叶角质层,通过扫描电子显微镜和傅里叶红外光谱仪对其进行表征分析,利用热重-傅里叶红外光谱-质谱(TG-FTIR-MS)联用技术检测角质层的热释放行为和... 详细信息

为探究烟叶角质层热解行为及其在热解过程中气相产物释放规律,采用酶法、化学方法分离烟叶角质层,通过扫描电子显微镜和傅里叶红外光谱仪对其进行表征分析,利用热重-傅里叶红外光谱-质谱(TG-FTIR-MS)联用技术检测角质层的热释放行为和热解产物。结果表明,采用酶法和化学方法均可分离烟叶角质层,烟叶角质层的热解可分为失水(50~135℃)、快速脱挥发分(135~595℃)和碳化(595~900℃)3个阶段,其热解产生的气体成分主要包括CH_(4)和CO_(2),气态产物多集中在300~600℃温度区间,其中以羧酸类化合物和甲苯居多。苯系物在250℃左右开始产生,在500~540℃温度区间内达到峰值,而尼古丁的生成量则相对较少。

关键词：烟叶角质层分离 TG-FTIR-MS联用热解气态产物

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Effects of a closed-loop system against SARS-CoV-2 at the Beijing 2022 Olympic Winter Games:a descriptive and modeling study

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World Journal of Emergency Medicine 2023年第6期14卷 471-476页

作者： Rong Xiong Jieping Zhou wenning Li Jie liu Jing Lou Sijia Tian Huixin Lian Shengmei Niu Luxi Zhang Wenhang Li Jinjun Zhang Emergence Medical Service Group for Beijing 2022 Winter Olympic Games Beijing Emergency Medical CenterBeijing 100031China Department of Neurology Beijing Fuxing HospitalCapital Medical UniversityBeijing 100038China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China Department of General Surgery Beijing Tongren HospitalCapital Medical UniversityBeijing 100730China Games Services Department Beijing Organizing Committeefor the 2022 Olympic and Paralympic Winter Games

BACKGROUND:To assess the efficacy of the epidemic prevention measures of the“closed-loop”system adopted by the Beijing 2022 Olympic Winter Games(BOWG).METHODS:We retrospectively collected and analyzed information,including age,sex,nationality,vaccination status,date of diagnosis,and date of entry,from 280 SARS-CoV-2-positive individuals identified during the BOWG.A susceptibility-exposed-infectious-remove model was employed to evaluate the effectiveness of epidemic prevention strategies on controlling the spread of SARS-CoV-2 under different scenarios during the BOWG.RESULTS:Regarding SARS-CoV-2-positive cases,97.9%were imported,and 96.4%were asymptomatic.The median age was 37 years(range:29–47 years),and 73.9%were male,with the majority of cases being broadcasters and European attendees.Regarding vaccination status,93.5%were fully vaccinated,and six cases were considered to have been infected in the closed-loop system during the BOWG.Assuming that the BOWG adopted a semi-closed-loop management system,the cumulative number of confirmed cases would be 1,137 for quick quarantine measures(3 d later)implemented and 5,530 for delayed quarantine measures(9 d later)implemented.This modeling revealed that stringent pandemic prevention measures and closed-loop management effectively controlled the spread of SARS-CoV-2 during the BOWG.CONCLUSION:Imported cases are considered the main risk factor for SARS-CoV-2 transmission during mass gatherings,but a comprehensive closed-loop system could minimize transmission among attendees and general personnel.

关键词： Olympic Winter Games Emergency medical service SARS-CoV-2 COVID-19 Infectious disease Transmission

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