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Constructed Mott-Schottky Heterostructure Catalyst to Trigger Interface Disturbance and Manipulate Redox Kinetics in Li-O2 Battery

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nAnO-MICRO LETTERS 2024年第1期16卷 1-17页

作者： Xia, Yongji Wang, Le Gao, Guiyang Mao, Tianle Wang, Zhenjia j.n, xuefeng Hong, Zheyu Han, jiajia Peng, Dong-Liang Yue, Guanghui Xiamen Univ Coll Mat Fujian Key Lab Surface & Interface Engn High Perfo State Key Lab Phys Chem Solid Surface Xiamen 361005 Peoples R China

Lithium-oxygen batteries (LOBs) with high energy density are a promising advanced energy storage technology. However, the slow cathodic redox kinetics during cycling causes the discharge products to fail to decompose in time, resulting in large polarization and battery failure in a short time. Therefore, a self-supporting interconnected nanosheet array network niCo2O4/MnO2 with a Mott-Schottky heterostructure on titanium paper (TP-nCO/MO) is ingeniously designed as an efficient cathode catalyst material for LOBs. This heterostructure can accelerate electron transfer and influence the charge transfer process during adsorption of intermediate by triggering the interface disturbance at the heterogeneous interface, thus accelerating oxygen reduction and oxygen evolution kinetics and regulating product decomposition, which is expected to solve the above problems. The meticulously designed unique structural advantages enable the TP-nCO/MO cathode catalyst to exhibit an astounding ultra-long cycle life of 800 cycles and an extraordinarily low overpotential of 0.73 V. This study utilizes a simple method to cleverly regulate the morphology of the discharge products by constructing a Mott-Schottky heterostructure, providing important reference for the design of efficient catalysts aimed at optimizing the adsorption of reaction intermediates.

关键词： Mott-Schottky heterostructure Lithium-oxygen batteries Electrocatalysts Electrodeposition AIR BATTERIES OXIDE

Constructed Mott-Schottky Heterostructure Catalyst to Trigger Interface Disturbance and Manipulate Redox Kinetics in Li-O2 Battery

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nano-Micro Letters 2024年第12期 50-66页

作者： Yongji Xia Le Wang Guiyang Gao Tianle Mao Zhenjia Wang xuefeng j.n Zheyu Hong jiajia Han Dong-Liang Peng Guanghui Yue State Key Lab of Physical Chemistry of Solid Surface Fujian Key Laboratory of Surface and Interface Engineering for High Performance MaterialsCollege of Materials Xiamen University

Lithium-oxygen batteries（LOBs） with high energy density are a promising advanced energy storage technology. However, the slow cathodic redox kinetics during cycling causes the discharge products to fail to decompose in time, resulting in large polarization and battery failure in a short time. Therefore, a self-supporting interconnected nanosheet array network niCo2O4/MnO2with a Mott-Schottky heterostructure on titanium paper（TP-nCO/MO） is ingeniously designed as an efficient cathode catalyst material for LOBs. This heterostructure can accelerate electron transfer and influence the charge transfer process during adsorption of intermediate by triggering the interface disturbance at the heterogeneous interface, thus accelerating oxygen reduction and oxygen evolution kinetics and regulating product decomposition, which is expected to solve the above problems. The meticulously designed unique structural advantages enable the TP-nCO/MO cathode catalyst to exhibit an astounding ultra-long cycle life of 800 cycles and an extraordinarily low overpotential of 0.73 V. This study utilizes a simple method to cleverly regulate the morphology of the discharge products by constructing a Mott-Schottky heterostructure, providing important reference for the design of efficient catalysts aimed at optimizing the adsorption of reaction intermediates.

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基于过滤算法的网站针对性推荐模型

软件 2024年第1期45卷 56-59页

作者：胡学锋晋中信息学院山西晋中030800

随着互联网技术的快速发展,个性化推荐系统在网站的用户粘性和用户体验方面发挥着重要作用。为提高网站针对性推荐的准确度与效率,提出结合过滤算法的网站针对性推荐模型。通过对用户行为数据进行深入分析,结合协同过滤算法对网站数据... 详细信息

随着互联网技术的快速发展,个性化推荐系统在网站的用户粘性和用户体验方面发挥着重要作用。为提高网站针对性推荐的准确度与效率,提出结合过滤算法的网站针对性推荐模型。通过对用户行为数据进行深入分析,结合协同过滤算法对网站数据进行整合及深度挖掘。同时,通过相似度匹配更加准确地确定用户偏好,进行网站信息的针对性推荐。经过实验对比,基于过滤算法的网站针对性推荐模型比其他算法模型所需推荐时间更短,针对性推荐准确度更高,利于网站提升用户粘性与用户满意度。

关键词：用户粘性协同过滤算法相似度匹配数据挖掘针对性推荐

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数据挖掘技术在软件工程中的应用

电子技术（上海） 2024年第1期53卷 354-356页

作者：胡学锋晋中信息学院信息工程学院大数据学院山西030800

阐述数据挖掘技术在软件工程中应用的特点,有助于增强信息数据理解、正确录入数据信息、提高数据处理效率。探讨数据挖掘技术在软件工程中的遗传算法、神经网络算法、聚类法、分类法、关联法的应用。分析数据挖掘技术在软件工程中的应... 详细信息

阐述数据挖掘技术在软件工程中应用的特点,有助于增强信息数据理解、正确录入数据信息、提高数据处理效率。探讨数据挖掘技术在软件工程中的遗传算法、神经网络算法、聚类法、分类法、关联法的应用。分析数据挖掘技术在软件工程中的应用策略,包括软件执行记录分析、软件故障检测、软件漏洞扫描、软件版本信息管理、软件代码克隆检测。

关键词：数据挖掘技术软件工程遗传算法软件漏洞扫描

MCM-41负载纳米钯催化剂制备及其催化脱氢性能的研究

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化学与粘合 2024年第5期46卷 427-431,442页

作者：刘紫婷白雪峰黑龙江省科学院石油化学研究院黑龙江哈尔滨150040

采用湿法浸渍-辉光放电等离子还原法,制备了MCM-41负载纳米钯催化剂(Pd-WP/M41),并通过XRD、TEM、XPS、H2-TPR和H2-TPD等手段对Pd-WP/M41进行了表征。结果表明:钯纳米粒子(PdnPs)均匀分散在载体MCM-41表面,平均粒径为2.52 nm。与化学还... 详细信息

采用湿法浸渍-辉光放电等离子还原法,制备了MCM-41负载纳米钯催化剂(Pd-WP/M41),并通过XRD、TEM、XPS、H2-TPR和H2-TPD等手段对Pd-WP/M41进行了表征。结果表明:钯纳米粒子(PdnPs)均匀分散在载体MCM-41表面,平均粒径为2.52 nm。与化学还原法制备的催化剂(Pd-WC/M41)相比,Pd-WP/M41上钯的分散度更高,且具有更多的催化活性位点。Pd-WP/M41催化十二氢-n-乙基咔唑(12H-nEC)的脱氢反应实验结果表明,在180℃下反应6 h时,12H-nEC脱氢效率为98.79%,脱氢反应活化能为85.2 k j/mol。Pd-WP/M41循环4次时,12H-nEC脱氢效率仍达到91.23%。

关键词： MCM-41分子筛负载型纳米钯催化剂催化脱氢辉光放电等离子还原

DG algebra structures on AS-regular algebras of dimension 2

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Science China Mathematics 2011年第10期54卷 2235-2248页

作者： MAO xuefeng Department of Mathematics Shanghai University Shanghai 200444 China

Let A be a connected cochain DG algebra, whose underlying graded algebra is an Artin-Schelter regular algebra of global dimension 2 generated in degree 1. We give a description of all possible differential of A and compute H（A）. Such kind of DG algebras are proved to be strongly Gorenstein. Some of them serve as examples to indicate that a connected DG algebra with Koszul underlying graded algebra may not be a Koszul DG algebra defined in He and We （j Algebra, 2008, 320： 2934-2962）. Unlike positively graded chain DG algebras, we give counterexamples to show that a bounded below DC A-module with a free underlying graded A^#-module may not be semi-projective.

关键词： AS-regular algebra differential graded algebra Koszul algebra semi-projective module

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指尖密封各向异性流动传热及热变形研究

兵器装备工程学报 2024年第8期45卷 248-258页

作者：胡雪峰王娟刘美红宋晓磊昆明理工大学机电工程学院昆明650500

航空发动机中指尖密封通常工作在高压差、高温及高转速的环境中,为研究其内部复杂的流动传热及热变形问题,建立指尖密封各向异性流动与传热的三维流场模型和用于热变形分析的固体模型,基于流场模型,得到不同工况下指尖密封的压力场和温... 详细信息

航空发动机中指尖密封通常工作在高压差、高温及高转速的环境中,为研究其内部复杂的流动传热及热变形问题,建立指尖密封各向异性流动与传热的三维流场模型和用于热变形分析的固体模型,基于流场模型,得到不同工况下指尖密封的压力场和温度场,并将其作为边界条件加载到固体模型进行热变形分析。结果表明:在流动与传热方面,泄漏率随压差的增大而增大,随转速的增大而略有下降,随过盈量的增大而减小;各向异性与各向同性传热相比,由于考虑了轴向接触热阻,所以其轴向温度梯度变化量更大;最高温度随转速的增大而增大,且随压差的增大而减小。在热变形方面,径向最大变形量随转速及过盈量的增大而增大,转速与压差对轴向变形量影响较小;相同过盈量下,径向最大变形量约为安装过盈量的21.6%,轴向最大变形量约为安装过盈量的4.68%;在相同压差下,过盈量每增加0.1 mm,径向最大变形量约增加89.89%,而泄漏率相应减小4.86%。研究可为接触式指尖密封结构参数优化及密封失效分析提供一定参考。

关键词：指尖密封各向异性泄漏率温度场热变形

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厚及特厚煤层群采动影响下覆岩运动特征探究

矿业研究与开发 2024年第7期44卷 64-71页

作者：张强勇冯雪峰陈长鹏张修峰山东大学岩土与地下工程研究院山东济南250061 山东能源集团有限公司山东济南250014

以新疆硫磺沟煤矿(4-5)02工作面、(9-15)06工作面、(9-15)08工作面为研究对象,借助UDEC数值模拟软件及现场监测数据,探究厚及特厚煤层群开采过程中,煤层上覆岩层的运动特征及覆岩运动对下位煤层开采的影响。研究结果表明:覆岩运动在多... 详细信息

以新疆硫磺沟煤矿(4-5)02工作面、(9-15)06工作面、(9-15)08工作面为研究对象,借助UDEC数值模拟软件及现场监测数据,探究厚及特厚煤层群开采过程中,煤层上覆岩层的运动特征及覆岩运动对下位煤层开采的影响。研究结果表明:覆岩运动在多层关键层控制作用的影响下呈现明显的“上弱下强”特点;关键层控制作用使得覆岩运动自下而上呈现明显的“低-中-高”渐次发展特征;上位煤层开采过程中上方坚硬砂岩不易发生断裂破坏,覆岩运动不完全,致使下位煤层开采过程中高、中位岩层将发生较大的断裂破坏,有较大的弹性能释放,对此应在上位煤层开采过程中,开展合理有效的顶板预裂等控制手段,避免下位煤层开采过程中有较大的能量释放。

关键词：厚及特厚煤层煤层群开采覆岩运动关键层控制数值模拟

Regulation of antiviral innate immunity by deubiquitinase CYLD

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Cellular & Molecular Immunology 2011年第6期8卷 502-504页

作者： Minying Zhang Andrew j Lee xuefeng Wu Shao-Cong Sun Department of Immunology The University of Texas MD Anderson Cancer CenterHoustonTXUSA Department of Melanoma Medical Oncology The University of Texas MD Anderson Cancer CenterHoustonTXUSA Laboratory of Gene Regulation and Signal Transduction Department of PharmacologySchool of MedicineUniversity of California at San DiegoLa JollaCAUSA

An antiviral innate immune response involves induction of type I interferons(IFns)and their subsequent autocrine and paracrine actions,but the underlying regulatory mechanisms are incompletely *** we report that CYLD,a deubiquitinase that specifically digests lysine 63-linked ubiquitin chains,is required for antiviral host *** of CYLD renders mice considerably more susceptible to infection by vesicular stomatitis virus(VSV).Consistently,CYLD-deficient dendritic cells are more sensitive to VSV *** functional defect was not due to lack of type I IFn production but rather because of attenuated IFn receptor *** the absence of CYLD,IFn-b is ineffective in the induction of antiviral genes and protection of cells from viral *** findings establish CYLD as a novel regulator of antiviral innate immunity and suggest a role for CYLD in regulating IFn receptor signaling.

关键词： antiviral innate immunity CYLD deubiquitinase interferon VSV