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Enhancing oxidative desulfurization of polyoxometalate by integrating with a self-reductive framework

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Science china Materials 2024年第9期67卷 2925-2933页

作者： Yonghui Lin Xiaojun Zhao shenzhen Chang Yixin Zhang Letian Gan Yuyang Tian Qinhe pan Guangshan Zhu Key Laboratory of Advanced Materials of Tropical Island resources Ministry of EducationSchool of Chemistry and Chemical EngineeringHainan UniversityHaikou570228China Faculty of Chemistry Northeast Normal UniversityChangchun130024China

With the strict control of sulfur content in fuels,oxidative desulfurization(ODS),a promising desulphurization technology,needs to be continuously *** this study,we integrated multiple ap.r.aches(fabricating a p.r.us structure,increasing phosphomolybdic acid(pMo)loading,improving amphiphilicity,and enhancing the intrinsic activity of pMo using a reductive framework)into pAF-54.carriers to improve ODS catalytic *** catalytic p.r.ormance suggested that pAF-54.was not simply used as a carrier for pMo by physical *** the binding process,electron transfer between pAF-54.and pMo formed Mo^(5+)with sup.r.or catalytic *** to the presence of pAF-54.the catalytic activity of pMo as the active component qualitatively improved to achieve rapid and efficient *** imp.r.antly,we found that other nitrogen-rich p.r.us organic polymers can also reduce some of Mo^(6+)in pMo during loading,and its formation mechanism was *** work provides a feasible strategy for designing highly efficient DOS catalysts.

关键词： pAF-54 self-reduction oxidative desulfurization Mo^(5+)

Stability of discrete Hopfield neural networks with delay

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Journal of Systems Engineering and Electronics 2005年第4期16卷 937-940页

作者： Ma runnian 1,2 , Lei Sheping3 & Liu Naigong4.. Telecommunication Engineering inst., Air Force Engineering univ., Xi’an 710071, p. r. china 2. Key Lab of Information Sciences and Engineering, Dalian univ., Dalian 111662, p. r. china 3. School of Humanity Law and Economics, Northwestern polytechnical univ., Xi’an 710072, p. r. china 4. Science inst., Air Force Engineering univ., Xi’an 710051, p. r. china Telecommunication Engineering inst. Air Force Engineering Univ. XT an 710071 P. R. China Key Lab of Information Sciences and Engineering Dalian Univ. Dalian 111662 P. R. China School of Humanity Law and Economics Northwestern Polytechnical Univ. XT an 710072 P. R. China Science inst. Air Force Engineering Univ. XT an 710051 P. R. China

Discrete Hopfield neural network with delay is an extension of discrete Hopfield neural network. As it is well known, the stability of neural networks is not only the most basic and imp.r.ant problem but also foundation of the network＇s applications. The stability of discrete HJopfield neural networks with delay is mainly investigated by using Lyapunov function. The sufficient conditions for the networks with delay converging towards a limit cycle of length 4.are obtained. Also, some sufficient criteria are given to ensure the networks having neither a stable state nor a limit cycle with length 2. The obtained results here generalize the previous results on stability of discrete Hopfield neural network with delay and without delay.

关键词： discrete Hopfield neural network with delay stability limit cycle.

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氢气分离有机膜

化工学报 2024年第1期75卷 138-158页

作者：朱娇栾丽萍从深震刘新磊天津大学化工学院化学工程研究所天津300072 天津市膜科学与海水淡化技术重点实验室化学工程联合国家重点实验室(天津大学)天津300072 物质绿色创造与制造海河实验室天津300192

氢气是重要的化工原料和燃料,其分离纯化的效果将直接影响使用成本。有机聚合物膜具有成本低、可加工性强、结构多样、性能稳定等优点,已成为H2分离领域应用最多的膜材料。介绍了H2分离有机膜的分离机理,讨论了H2分离有机膜的种类、制... 详细信息

氢气是重要的化工原料和燃料,其分离纯化的效果将直接影响使用成本。有机聚合物膜具有成本低、可加工性强、结构多样、性能稳定等优点,已成为H2分离领域应用最多的膜材料。介绍了H2分离有机膜的分离机理,讨论了H2分离有机膜的种类、制备方法和性能,综述了其应用现状,并对未来的发展前景进行了展望。

关键词：氢气聚合物膜分离

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reflections on china's inst.tutional reform on Urban planning Decision-making:A Case Study on shenzhen Urban planning Committee

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china City planning review 2009年第3期18卷 8-16页

作者： GUO Sujun LI Caige postgraduate student,Urban planning Dep.r.ment,Nanjing univ.rsity Deputy Director,No.1 planning inst.tute,shenzhen Branch,Guangdong Urban-rural planning and Design inst.tute,shenzhen,p.r.china.

With the establishment of a market economy, the deepening of market-oriented reforms, and an increased awareness of rights protection, the role of government as sole investor and manager of urban construction

关键词： deepening awareness governmental legal committee a

锂金属负极固态电解质界面膜形成和生长机理的理论研究进展

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储能科学与技术 2024年第9期13卷 3150-3160页

作者：周国兵许审镇北京大学材料科学与工程学院北京100871 江西师范大学化学工程学院江西南昌330022

锂金属负极因其极高的理论比容量在锂离子电池领域引起了极大的关注,但其高反应活性会引发电解液组分发生一系列复杂的降解反应,并在电极表面生成固态电解质界面膜(SEI)。SEI钝化层一方面能抑制电解液持续损耗,另一方面也会显著影响电... 详细信息

锂金属负极因其极高的理论比容量在锂离子电池领域引起了极大的关注,但其高反应活性会引发电解液组分发生一系列复杂的降解反应,并在电极表面生成固态电解质界面膜(SEI)。SEI钝化层一方面能抑制电解液持续损耗,另一方面也会显著影响电池的循环性能。因此,从原子/分子层面阐明SEI形成和生长机理成为了近些年的研究重点和热点。本文综述了不同理论模拟方法在SEI结构、组分和生长过程的最新研究进展,介绍了经典分子动力学、反应力场分子动力学、第一性原理分子动力学、机器学习力场分子动力学以及动力学蒙特卡罗等模拟方法在SEI研究中的成功案例。讨论了现有理论计算方法在模拟SEI形成和生长机理方面的局限性,提出可结合机器学习和动力学蒙特卡罗方法来实现长时域SEI形成和生长过程模拟的技术方案展望。

关键词：固态电解质界面膜形成和生长机理分子动力学动力学蒙特卡罗机器学习

ON THE GENErALIZED INVErSE NEVILLE-TYpE MATrIX-VALUED rATIONAL INTErpOLANTS

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Journal of Computational Mathematics 2003年第2期21卷 157-166页

作者： Zhibing Chen9+(Dep.r.ment of Mathematics, Normal College, shenzhen univ.rsity, shenzhen 5.8060, china) Dep.r.ment of Mathematics Normal College Shenzhen University Shenzhen 518060

A new kind of matrix-valued rational interpolants is recursively established by means of generalized Samelson inverse for matrices, with scalar numerator and matrix-valued denominator. In this respect, it is essentially different from that of the previous works [7, 9], where the matrix-valued rational interpolants is in Thiele-type continued fraction form with matrix-valued numerator and scalar denominator. For both univ.riate and bivariate cases, sufficient conditions for existence, characterisation and uniqueness in some sense are proved respectively, and an error formula for the univ.riate interpolating function is also given. The results obtained in this pap.r.are illustrated with some numerical examples.

关键词： Generalized inverse for matrices Neville-type rational interpolants.

广东深圳长圳公共租赁住房新型建造技术集成项目

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建筑实践 2024年第3期 104-111页

作者： china Construction Science Technology Group Co., Ltd. shenzhen General inst.tute of Architectural Design and research Co., Ltd. 中建科技集团有限公司深圳市建筑设计研究总院有限公司

长圳公共住房及其附属工程项目（以下简称长圳项目）位于深圳市光明区,是深圳市规模最大的装配式公共住房项目和深圳市建设管理模式改革创新的试点项目。项目总投资58亿元,地上建筑24.,总建筑面积约115万m2,其中:住宅建筑面积81万m2,...

长圳公共住房及其附属工程项目（以下简称长圳项目）位于深圳市光明区,是深圳市规模最大的装配式公共住房项目和深圳市建设管理模式改革创新的试点项目。项目总投资58亿元,地上建筑24.,总建筑面积约115万m2,其中:住宅建筑面积81万m2,商业建筑6.5万m2,公共配套设施3.2万m2,多层建筑高度10—24.,高层建筑高度100—150m,提供近万套人才安居住房。

关键词：

Sequencing and analysis of the giant panda genome

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Science china(Life Sciences) 2010年第8期53卷 1047-1048页

作者： YANG HuanMing BGI-shenzhen (Beijing Genomics inst.tute shenzhen), shenzhen 518083, {4. 1. BGI-shenzhen (Beijing Genomics inst.tute shenzhen) Shenzhen 518083 China

The giant panda (Ailuropoda melanoleuca) is loved all over the world and is considered a symbol of china, as illustrated by its being one of the

关键词： Sequencing and analysis of the giant panda genome

Stability analysis of cellular neural networks with time-varying delay

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Journal of Systems Engineering and Electronics 2009年第2期20卷 266-273页

作者： Wang Xingang1,4. Zhang Dongmei2 & Liu Jun3 1. Coll. of Information Engineering, Zhejiang univ. of Technology, Hangzhou 310032, p. r. china 2. Coll. of Science, Zhejiang univ. of Technology, Hangzhou 310032, p. r. china 3. Coll. of Science, Beihua univ., Jilin 132000, p. r. china 4. School of Computer Engineering and Science, Shanghai univ., Shanghai 200072, p. r. china Coll. of Information Engineering Zhejiang Univ. of Technology Hangzhou 310032 P. R. China School of Computer Engineering and Science Shanghai Univ. Shanghai 200072 P. R. China Coll. of Science Zhejiang Univ. of Technology Hangzhou 310032 P. R. China Coll. of Science Beihua Univ. Jilin 132000 P. R. China

The global asymptotic stability of cellular neural networks with delays is investigated. Three kinds of time delays have been considered. New delay-dependent stability criteria are proposed and are formulated as the feasibility of some linear matrix inequalities, which can be checked easily by resorting to the recently developed interior-point algorithms. Based on the Finsler Lemma, it is theoretically proved that the proposed stability criteria are less conservative than some existing results.

关键词： cellular neural networks time-varying delay integral inequality