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Carbon layer-coated ordered mesoporous silica supported Co-based catalysts for higher alcohol synthesis:The role of carbon source

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Chinese Chemical Letters 2020年第2期31卷 525-529页

作者： Siqi Fan Yue Wang Zhuoshi Li Zhuang Zeng Shaoxia Guo Shouying Huang Xinbin Ma Key Laboratory for Green Chemical Technology of Ministry of Education Collaborative Innovation Centre of Chemical Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

Surface chemical properties of supports have an important influence on active sites and their catalytic behavio r.Here,we fabricated a series of cobalt-based catalysts supported by carbon layer-coated ordered mesoporous silica(OMS) composites for higher alcohol synthesis(HAS).The carbon layers were derived from different sources and uniformly coated on the porous surface of OMS.Combined with the characterization results of carbonized catalysts,it is demonstrated that the carbon layer-coated supports significantly enhanced the metal dispersion and increased the ratio of Co2+ to Co0 sites,which further increased the CO conversion and alcohols selectivity.Moreover,it is found that the catalytic activity changed in line with the amount of defects and surface oxygenic groups of carbon layers,which re sulted from the different carbon sources.The highest space time yield of C2+OH was 27.5 mmol gcat-1h-1)obtained by the catalyst coated with glucose-derived carbon layer.But the carbon source is not the key factor influencing the distribution of Co-Co2+ dual sites and shows little effect on selectivity in HAS.These results may guide for further design of carbon supported catalysts.

关键词： Syngas higher alcohols Cobalt-based catalysts Carbon layer-coated support Carbon source

Are “higher-Order” and “Layer-wise Zig-Zag” Plate & Shell Theories Necessary for Functionally Graded Materials and Structures?

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Computer Modeling in Engineering & Sciences 2016年第7期112卷 1-32页

作者： Yaping Zhang Qifeng Fan Leiting Dong Satya NAtluri Taizhou Polytechnic College China School of Aeronautic Science and Engineering Beihang UniversityChina Department of Mechanical Engineering Texas Tech UniversityUSA

Similar to the very vast prior literature on analyzing laminated composite structures,“higher-order”and“layer-wise higher-order”plate and shell theories for functionally-graded(FG)materials and structures are also widely popularized in the literature of the past two decades.However,such higher-order theories involve(1)postulating very complex assumptions for plate/shell kinematics in the thickness direction,(2)defining generalized variables of displacements,strains,and stresses,and(3)developing very complex governing equilibrium,compatibility,and constitutive equations in terms of newly-defined generalized kinematic and generalized kinetic variables.Their industrial applications are thus hindered by their inherent complexity,and the fact that it is difficult for end-users(front-line structural engineers)to completely understand all the newly-defined generalized DOFs for FEM in the higher-order and layer-wise theories.In an entirely different way,very simple 20-node and 27-node 3-D continuum solid-shell elements are developed in this paper,based on the simple theory of 3D solid mechanics,for static and dynamic analyses of functionally-graded plates and shells.A simple Over-Integration(a 4-point Gauss integration in the thickness direction)is used to evaluate the stiffness matrices of each element,while only a single element is used in the thickness direction without increasing the number of degrees of freedom.A stress-recovery approach is used to compute the distribution of transverse stresses by considering the equations of 3D elasticity in Cartesian as well as cylindrical polar coordinates.Comprehensive numerical results are presented for static and dynamic analyses of FG plates and shells,which agree well,either with the existing solutions in the published literature,or with the computationally very expensive solutions obtained by using simple 3D isoparametric elements(with standard Gauss Quadrature)available in NASTRAN(wherein many 3D elements are used in the thickness direction to capture the varying material

关键词： functionally graded plates and shells 20-node hexahedral element 27-node over-integration higher order theory layer-wise

英语学习活动观视角下英文原版教材的评价与应用——以Reach higher 3为例

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中国科技经济新闻数据库教育 2023年第3期 0133-0136页

作者：赵王盼杭州师范大学浙江杭州311121

教材是课程实施的主要载体,对教材进行深入地分析是教师有效教学的前提。在英语学习活动观理念下,教师需要学会整合教材内容,灵活使用教材,创设多种形式的活动,在活动中促进学生语英语学科核心素养的发展。本文旨在英语学习活动观理念... 详细信息

教材是课程实施的主要载体,对教材进行深入地分析是教师有效教学的前提。在英语学习活动观理念下,教师需要学会整合教材内容,灵活使用教材,创设多种形式的活动,在活动中促进学生语英语学科核心素养的发展。本文旨在英语学习活动观理念的指导下分析评价Reach higher 3英语教材,并结合实例给出其作为拓展教材的使用建议,为中小学英语教师设计教学活动,实践英语学习活动观提供参考。

关键词：英语学习活动观 Reach higher 3教材教材评价

higher Vocational and Professional higher Education Qualifications in the European Level 5 Area——A basis for more international cooperation

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中国高等教育评论 2017年第2期 15-25页

作者： Hans Daale CHAIN5

The'European Level 5 Area'(EL5A)is a relatively new concept for Europe,giving an excellent opportunity to link the sectors for Vocational Education and Training(VET)and higher Education(HE)to each other.Then it is about looking at qualifications at level 5 of the European Qualifications Framework(EQF)for Lifelong Learning and using them

关键词： higher Vocational and Professional higher Education Qualifications in the European Level 5 Area VET

Domestic Cosmetic Products Take higher Position

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中国对外贸易：英文版 2023年第2期 34-35页

作者： Ada Wang 不详

The recent years have witnessed the exit of many foreign cosmetic brands from the Chinese market,such as Revlon and e.l.f.Since 2021,about 20 foreign cosmetic brands have withdrawn from the Chinese market,where they c... 详细信息

关键词： market witnessed higher

A Note on Weak Type(1,1) Estimate for the higher Order Commutators of Christ-Journé Type

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Analysis in Theory and Applications 2019年第3期35卷 268-287页

作者： Yong Ding Xudong Lai School of Mathematical Sciences Beijing Normal UniversityBeijing 100875China Institute for Advanced Study in Mathematics Harbin Institute of TechnologyHarbin 150001China

In this paper,a weak type(1,1)estimate is established for the higher order commutator introduced by Christ and Joume which is defined byT[a1,…,a1]f(x)=p.v∫R^dK(x-y)(lПi=1 mx,yai)·f(y)dy,where K is the standard Cal... 详细信息

关键词： Weak type(1,1) higher order commutator

Total Quality Management at Algerian higher Education Institutions to Promote Our Roles in Comprehensive Development

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Journal of Business Administration Research 2020年第1期3卷 8-13页

作者： Hocine Bachioua Khaoula Kachaou Salim Keffane Faculty of Humanities and Social Sciences University Setif 2SetifAlgeria Department of Psychology University Setif 2SetifAlgeria

The aims this study to know the reality of the role for Total Quality Management(TQM)to need of Algerian higher Education Institutions(AHEI)in apply the Total Quality Management(TQM)to promote the Comprehensive Development(CD),and this approach to enhance their roles in the comprehensive development,the efficiency of the training process,global changes and their needs to adopt a new educational policy in line with the global transformation competition,and the requirements of sustainable development,in this study was used a questionnaire composed of(75)items distributed on(08)areas,This is for confirmation the need to adopt philosophy of Total Quality Management(TQM)as a strategy imposed by the nature and the stage experienced for Algerian higher Education Institutions(AHEI),And deal with the nature of the changes and challenges imposed by certain factors such as Globalization and the knowledge revolution,through all this inevitably to apply the Total Quality Management(TQM)in our Algerian higher Education Institutions(AHEI).

关键词： Total Quality Management(TQM) Algerian higher Education Institutions (AHEI) Comprehensive Development(CD)

高教改革亟需政治学观点与视角——兼论高等教育政治学的动力、命题与品质定位

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现代大学教育 2010年第6期26卷 19-23页

作者：鲍嵘浙江师范大学田家炳教育研究院台湾高等教育研究所

中国高等教育改革的进一步深化涉及到认识与理念的多方面问题。政治学的视角与观点无疑为人们厘清现实纠葛、深入问题本质提供助益。高等教育实践是推动高等教育政治学发展的原初动力,而回应与丰富已有的知识政治学知识则是高等教育政... 详细信息

中国高等教育改革的进一步深化涉及到认识与理念的多方面问题。政治学的视角与观点无疑为人们厘清现实纠葛、深入问题本质提供助益。高等教育实践是推动高等教育政治学发展的原初动力,而回应与丰富已有的知识政治学知识则是高等教育政治论应自觉承担的责任。高等教育政治论的核心命题与内容涵盖诸如高等教育国家治权合法性等宏观、中观与微观的多个层面。理想的高等教育政治论应该具有透彻、清明与开放的品质。

关键词：高教改革教育政治学观点视角动力核心命题品质定位 Reform higher Education Perspective Application Function 中国高等教育改革政治论知识政治学政治学发展问题本质教育实践合法性治权

Strategies for Module Teaching in Public English Teaching in higher Vocational Colleges

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Journal of Contemporary Educational Research 2020年第3期4卷 39-43页

作者： Qiulan Hu Jilin Engineering Normal University Changchun 130052Jilin ProvinceChina

The pace of vocational education reform is constantly accelerating.In addition,effective reforms at the level of curriculum setting and teaching management,innovation,adjustment and optimization in the teaching of specific disciplines are also an inevitable requirement for reform.There are many innovative choices in public English teaching in higher vocational colleges relatively and modular teaching can also become a basic innovative teaching choice.However,it must also be seen that whether the module teaching is carried out or the active role of the module teaching is not simple with resulted in the impact of relevant difficult factors cannot be underestimated.This article will specifically analyze on module teaching in public English teaching in higher vocational colleges and make reasonable suggestions on how to better implement the module teaching.

关键词： higher Vocational Education Public English Module Teaching