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Dissipative par.icle Dynamics Simulations of the Self-assembly Mechanisms of Fluorinated Ordered Mesoporous Carbon in the Aqueous Phase

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Transactions of Tianjin University 2019年第5期25卷 559-566页

作者： Na sun Minhua Zhang Xiuqin dong Lingtao Wang R&D Center of Petrochemical Technology Tianjin UniversityTianjin 300072China Key Laboratory for Green Chemical Technology of Ministry of Education Tianjin UniversityTianjin 300072China

To clarify the prepar.tion mechanisms of uorinated ordered mesoporous carbon materials (FOMCs), the dissipative par. ticle dynamics method was used to simulate the self-assembly process of the amphiphilic triblock poly(ethylene oxide)- poly(propylene oxide)-poly(ethylene oxide) copolymer Pluronic F127 in the aqueous system. The self-assembly mechanisms in aqueous phase and the formation mechanisms of micropores and mesopores were investigated. It was found that the mesoporous structure of the FOMCs was formed by the hydrophobic segments of F127, while the pore wall was formed by both the hydrophilic segments and the carbon precursor in the system. The microporous structure on the pore wall was con- structed by the carbon source in the hydrophilic segments’ spaces after the template was removed. Our ndings could provide understanding and knowledge for the synthesis of mesoporous carbon by the self-assembly method on the mesoscopic scale.

关键词： Mesoporous carbon Dissipative par.icle dynamics Self-assembly Mesopore Micropore

Bacterial diacetyl suppresses abiotic stress-induced senescence in Arabidopsis

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Journal of Integrative Plant Biology 2022年第6期64卷 1135-1139页

作者： sunil K.Singh Yazhou sun Yu Yang Ziwei Zuo Xiaoxuan Wu Chuyang Shao Li Peng Paul W.par. Huiming Zhang Shanghai Center for Plant Stress Biology Center for Excellence in Molecular Plant Sciencesthe Chinese Academy of SciencesShanghai 201602China University of Chinese Academy of Sciences Beijing 100049China Depar.ment of Chemistry and Biochemistry Texas Tech UniversityLubbock 79409TexasUSA

Premature plant senescence induced by abiotic stresses is a major cause of agricultural losses worldwide. Tools for suppressing stress-induced plant senescence are limited. Here, we report that diacetyl, a natural compound emitted by the plantbeneficial bacterium Bacillus amyloliquefaciens,suppresses abscisic acid-mediated foliar senescence in Arabidopsis thaliana under various abiotic stress conditions. Our results establish diacetyl as an effective protector against stressinduced plant senescence and reveal a molecular mechanism for bacteria-enhanced plant stress resistance.

关键词： ABA diacetyl microbial volatile leaf senescence

行动者网络视角下中小企业参与产教融合的推进路径

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中国职业技术教育 2024年第13期 20-26页

作者：孙婧申玲三江学院土木工程学院

有效推进面广量大的中小企业积极参与产教融合行动,是深化产教融合的必然要求。针对现有中小企业参与产教融合目标决策与动力机制缺失、模式渠道匮乏、资源利用效率低下、信息沟通交流不畅、运行管理不规范、评价体系不健全等问题,提出... 详细信息

有效推进面广量大的中小企业积极参与产教融合行动,是深化产教融合的必然要求。针对现有中小企业参与产教融合目标决策与动力机制缺失、模式渠道匮乏、资源利用效率低下、信息沟通交流不畅、运行管理不规范、评价体系不健全等问题,提出基于中小企业参与下行动者网络的转译过程,系统构建共立目标协商机制、共建多元动力机制、共创组织平台载体、共商资源协同机制、共设信息协同机制、共定制度协同机制、共构发展评价体系的推进路径,为异质行动者协同推进中小企业参与产教融合行动提供参考。

关键词：产教融合中小企业行动者网络

A rationale for the development of thermally stable nanostructured CeO_2-ZrO_2-containing mixed oxides

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Journal of Rare Earths 2008年第2期26卷 136-140页

作者： Roberta Di Monte Jan Kapar.Heather Bradshaw Colin Norman Depar.ment of Chemistry Sciences Interuniversity Consortium INCA University of Trieste Via L.Giorgieri34127 Trieste Italy MEL Chemicals P.O. Box 6 Clifton Junction SwintonManchester M27 8LS England

CeO2-ZeO2 solid solutions are extensively used as oxygen storage promoters in the current automotive three-way catalysts. High thermal stability of the textural properties is one of the most important requirements for practical application since temperatures up to 1273 K are easily experienced by these materials under real working conditions. In the present paper, we investigated how hydrothermal treatments applied to cakes of doped and undoped ZrO2-rich CeO2-ZrO2 precursors might improve the thermal stability of the final CeO2-ZrO2 solid solution. A rationale was developed that allowed to correlate the morphology of the hydrothermaUy treated cake with the thermal stability at 1273 K of the final product, which did not depend on the composition of the mixed oxides.

关键词： CeO2-ZrO2 mixed oxides CeO2-ZrO2 solid solution CeO2-ZrO2 mixed oxides, thermal stability of three-way catalysts oxygen storage capacity rare earths

La liberte chez Andre Breton Reflexions sur Nadja

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外语教学 1994年第1期15卷 82-90,9页

作者： $$$$Presente par.madame Zhang Ping

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ＬａｌｉｂｅｒｔｅｃｈｅｚＡｎｄｒｅＢｒｅｔｏｎＲｅｆｌｅｘｉｏｎｓｓｕｒＮａｄｊａＬａ　ｌｉｂｅｒｔｅ　ｃｈｅｚ　Ａｎｄｒｅ　Ｂｒｅｔｏｎ　Ｒｅｆｌｅｘｉｏｎｓ　ｓｕｒ　ＮａｄｊａＰｒｅｓｅｎｔｅｐａｒｍａｄａｍｅＺｈａｎｇＰｉｎｇ＇＇Ｌｅｓｅｕｌ...

关键词： La liberte chez Andre Breton Reflexionssur Nadja

SeVe： automatic tool for verification of security protocols

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Frontiers of Computer Science 2012年第1期6卷 57-75页

作者： Anh Tuan LUU Jun sun Yang LIU Jin Song dong Xiaohong LI Thanh Tho QUAN School of Computing National University of Singapore Singapore 119077 Singapore School of Computing Singapore University of Technology and Design Singapore 138682 Singapore Depar.ment of Computer Science Tianjin University Tianjin 300222 China Depar.ment of Computer Science HoChiMinhCity University of Technology HoChiMinh City 162903 Vietnam

Security protocols play more and more important roles with wide use in many applications nowadays. Cur- rently, there are many tools for specifying and verifying secu- rity protocols such as Casper/FDR, ProVerif, or AVISPA. In these tools, the intruder＇s ability, which either needs to be specified explicitly or set by default, is not flexible in some circumstances. Moreover, whereas most of the existing tools focus on secrecy and authentication properties, few supports privacy properties like anonymity, receipt freeness, and coer- cion resistance, which are crucial in many applications such as in electronic voting systems or anonymous online transac- tions. In this paper, we introduce a framework for specifying security protocols in the labeled transition system （LTS） se- mantics model, which embeds the knowledge of the par. ticipants and par.meterizes the ability of an attacker. Us- ing this model, we give the formal definitions for three types of privacy properties based on trace equivalence and knowledge reasoning. The formal definitions for some other security properties, such as secrecy and authentica- tion, are introduced under this framework, and the veri- fication algorithms are also given. The results of this pa- per are embodied in the implementation of a SeVe mod- ule in a process analysis toolkit （PAT） model checker, which supports specifying, simulating, and verifying se- curity protocols. The experimental results show that a SeVe module is capable of verifying many types of secu- rity protocols and complements the state-of-the-art securityverifiers in several aspects. Moreover, it also proves the abil- ity in building an automatic verifier for security protocols re- lated to privacy type, which are mostly verified by hand now.

关键词： security protocols model checking processanalysis toolkit (PAT) authentication secrecy privacy

Using transient plane source sensor for determination of thermal properties of vacuum insulation panels

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Frontiers of Architectural Research 2012年第4期1卷 334-340页

作者： par.Johansson Bijan Adl-Zarrabi Carl-Eric Hagentoft Depar.ment of Civil ond Environmentol Engineering Cholmers University of Technology Gothenburg SE-412 96 Sweden

The energy use in buildings has to be decreased to reach the targets and regulations in the European Union. One way of reducing the energy demand is to use vacuum insulation panels （VIP） in the buitding envelope. To make sure the declared thermal properties of the VlP are valid for the mounted panels, in situ measurements are needed. The transient plane source （TPS） method allows fast measurement of the thermal properties of a variety of materials. However, the large anisotropy of the VIP makes it hard to interpret the temperature increase in the TPS sensor. This paper presents a compar.son between an analytical solution, numerical simulations and TPS measurements of polystyrene and polystyrene with aluminum film. Polystyrene and aluminum were used instead of VIP to increase the number of setups. The numerical simulation model was validated by compar.ng the simulated temperature increase with an analytical solution for the polystyrene sample. The simulated temperature increase in the polystyrene sample after 40 s was 7.8% higher than the TPS measurements. For the case with polystyrene with aluminum film, the deviation was 5.7%. Losses in the wires of the TPS sensor, uncertainties regarding the material par.meters and surface resistances could explain the deviations.

关键词： Thermal properties Transient planesource Vacuum insulationpanel AnaLytical solution Numerical simulation Measurement

高光谱影像三分支分组空谱注意力深度分类网络

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遥感学报 2024年第1期28卷 247-265页

作者：苏涵陈娜彭江涛孙伟伟湖北大学数学与统计学学院应用数学湖北省重点实验室武汉430062 宁波大学地理与空间信息技术系宁波315211 宁波大学遥感遥测产业技术研究院宁波拾烨智能科技有限公司宁波315211

高光谱影像具有丰富的空间和光谱信息,充分提取和利用这两个维度的信息是高光谱分类算法重点关注的问题。目前深度特征提取网络通常利用单分支串行网络连续提取空谱特征或双分支并行网络分别提取空谱特征。由于空间和光谱维内在差异,单... 详细信息

高光谱影像具有丰富的空间和光谱信息,充分提取和利用这两个维度的信息是高光谱分类算法重点关注的问题。目前深度特征提取网络通常利用单分支串行网络连续提取空谱特征或双分支并行网络分别提取空谱特征。由于空间和光谱维内在差异,单分支串行网络连续提取的两类特征之间会互相干扰。并行双分支网络虽然可以减少两类特征之间的干扰,但同时会忽略空间和光谱特征间的潜在相关性。为解决上述问题,本文提出了一种三分支分组空谱注意力深度网络结构。该网络具有3个分支,分别用于提取空间、光谱和空谱联合特征。针对3个分支的不同特性,设计了不同的注意力机制以加强特征的判别性。该网络既可以提取独立的空间和光谱特征,又保留了空间和光谱之间的相关性。在5个数据集上的实验表明,本文所提出的方法要优于现有的一些先进算法。

关键词：高光谱影像分类注意力机制三分支结构深度网络

基于四方演化博弈视角的碳市场核查体系运行机制分析

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数学的实践与认识 2024年第3期54卷 1-17页

作者：董雨刘佳旭中国科学技术大学管理学院安徽合肥230026

为保证碳交易市场中数据的真实可靠我国政府引入一套MRV(监测Monitoring、报告Reporting、核查Verification)体系.其核心是引入独立的第三方机构对控排企业的碳排放报告进行核查.在运行过程中,控排企业与第三方机构合谋的问题经常发生.... 详细信息

为保证碳交易市场中数据的真实可靠我国政府引入一套MRV(监测Monitoring、报告Reporting、核查Verification)体系.其核心是引入独立的第三方机构对控排企业的碳排放报告进行核查.在运行过程中,控排企业与第三方机构合谋的问题经常发生.从地方政府、控排企业、第三方核查机构、公众在碳交易市场中相互影响的角度,构建四方演化博弈模型.研究发现:政府监管成本的降低可以促进整个系统实现理想情形;政府监督和公众参与是相互促进的关系;在公众参与监督时,政府对公众的补贴额度要控制在一定范围内;第三方机构比控排企业更加难以监管;核查成本是阻碍第三方机构正常运行的关键因素.政府惩罚效果优于政府奖励.

关键词： MRV体系碳交易第三方核查机构公众参与四方演化博弈