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Cu(OH)2 supported on Fe(OH)3 as a synergistic and highly efficient system for the dehydrogenation of ammonia-borane

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Science Bulletin 2018年第23期63卷 1583-1590页

作者： Cheng-Yun Peng Chun-Chao Hou Qian-Qian Chen Chuan-Jun Wang Xiao-Jun Lv Jun Zhong Wen-fu fu Chi-Ming Che Yong Chen Key Laboratory of Photochemical Conversion and Optoelectronic Materials & HKU-CAS Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijmg 100190China University of Chinese Academy of Sciences Beijing 100049China College of Chemistry and Material Science Shandong Agricultural UniversityTaian 271018China Institute of functional Nano and Soft Materials Laboratory (fuNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow University Suzhou 215123China State Key Laboratory of Synthetic Chemistry and Department of Chemistry The University of Hong KongHongKongChina

Herein,we first describe the physical mixture of Cu(OH)_2/Fe(OH)_3 as a composite catalyst precursor for the dehydrogenation of ammonia borane(AB)in *** the initial period of catalytic reaction,Cu nanoparticles were formed *** catalytic activity of Cu nanoparticles can be significantly enhanced with the assistance of Fe species and OH~à.A maximum turnover frequency(TOF)of 50.3 mol_(H2)mol^(à1)_(total metal)min^(à1)(135.6 mol_(H2)mol_(Cu)^(à1)min^(à1))was achieved at ambient temperature,which is superior to those of previously reported Fe or Cu based systems.

关键词： Ammonia borane Dehydrogenation Cu(OH)2 Fe(OH)3

Toward Earth system modeling with resolved clouds and ocean submesoscales on heterogeneous many-core HPCs

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National Science Review 2023年第6期10卷 153-167页

作者： Shaoqing Zhang Shiming Xu Haohuan fu Lixin Wu Zhao Liu Yang Gao Chun Zhao Wubing Wan Lingfeng Wan Haitian Lu Chenling Li Yanfei Liu Xiaojing Lv Jiayu Xie Yangyang Yu Jun Gu Xuantong Wang Yan Zhang Chenhui Ning Yunlong fei Xiuwen Guo Zhaoying Wang xue Wang Zhenming Wang Binglin Qu Mingkui Li Haoran Zhao Yingjing Jiang Guang Yang Lv Lu Hong Wang Hong An Xin Zhang Yu Zhang Wentao Ma fujiang Yu Jing Xu Xiaopei Lin xueshun Shen Key Laboratory of Physical Oceanography Ministry of Education/Institute for Advanced Ocean Study/Frontiers Science Center for Deep Ocean Multispheres and Earth System (DOMES) College of Oceanic and Atmospheric Sciences Ocean University of China Laoshan Laboratory Ministry of Education Key Lab for Earth System Modeling and Department of Earth System Science Tsinghua University National Supercomputing Center in Wuxi Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Marine Environment and Ecology Ministry of Education Ocean University of China Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China School of Computer Science and Technology University of Science and Technology of China CEAKJ ADPRHexa Inc. National Marine Environmental Forecasting Center State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography Ministry of Natural Resources Chinese Academy of Meteorological Sciences The Center of Earth System Modeling and Prediction China Meteorological Administration

With the aid of the newly developed ’Sunway’ heterogeneous-architecture supercomputer,which has world-leading HPC(high-performance computer) capability,a series of high-resolution coupled Earth system models(SW-HRESMs) with up to 5 km of atmosphere and 3 km of ocean have been *** models can meet the needs of multiscale interaction studies with different computational *** we describe the progress of SW-HRESMs development,with an overview of the major advancements made by the international Earth science community in *** also show the preliminary results of SW-HRESMs with regard to capturing major weather-climate extremes in the atmosphere and ocean,stressing the importance of permitted clouds and ocean submesoscale eddies in modeling tropical cyclones and eddy-mean flow interactions,and paving the way for further model development to resolve finer scales with even higher resolution and more realistic ***,in addition to increasing model resolution,the development procedure for a non-hydrostatic cloud and ocean submesoscale resolved ESM is discusse d,laying out the major scientific directions of such a huge modeling advancement.

关键词： high-resolution Earth system models heterogeneous supercomputer cloud and submesoscale resolving weather-climate extremes finer cross-scale interactions

Generalized Goldwasser and Micali’s Type Cryptosystem

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Journal of Computer Science & Technology 2022年第2期37卷 459-467页

作者： Ying Guo Zhen-fu Cao Xiao-Lei Dong Department of Computer Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Key Laboratory of Trustworthy Computing East China Normal UniversityShanghai 200062China Institute of Intelligent Science and Technology Tongji UniversityShanghai 200092China

In 1982,Goldwasser and Micali proposed the first probabilistic public key cryptosystem with indistinguishability under chosen plaintext attack security based on the quadratic residuosity *** expansion of Goldwasser's scheme is quite large,thereby the scheme is inefficient.A lot of schemes have been proposed to reduce the ciphertext *** schemes use the same encryption algorithm as Goldwasser's scheme with different parameters and keys,which we call them Goldwasser and Micali's type(GM-type)***-type schemes can be divided into two categories according to different parameters and decryption *** this paper,we propose the first generalized GM-type scheme combining these two *** GM-type schemes are special cases of our generalized GM-type *** ciphertext expansion of our scheme is smaller than that of any other GM-type schemes.

关键词： Goldwasser and Micali's type(GM-type)scheme k-th power residuosity discrete logarithm problem

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波普艺术和建筑

世界建筑 2001年第9期 83-85页

作者：费菁傅刚美国注册建筑师

文章回顾波普艺术在20世纪中期的缘起和兴盛从大众传媒和通俗文化的角度观察波普化现象指出随着技术手段的变化艺术和建筑中的波普是创作者与现实生活的互动

关键词：波普艺术波普建筑通俗文化建筑艺术

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基于生态廊道原理的城市河流景观空间分析

中国园林 2012年第9期28卷 57-61页

作者：付飞董靓西南交通大学建筑学院西南交通大学绿色建筑研究中心立昂低碳设计实验室

当今城市河流面临生态环境恶化、干扰影响加剧、河流景观匀质化等情况,呈不可持续发展的态势。国内外众多学者对城市河流景观的生态廊道功能和结构的研究已取得一定进展,而对于廊道的三维空间特征综合性研究还未涉及。笔者尝试运用景观... 详细信息

当今城市河流面临生态环境恶化、干扰影响加剧、河流景观匀质化等情况,呈不可持续发展的态势。国内外众多学者对城市河流景观的生态廊道功能和结构的研究已取得一定进展,而对于廊道的三维空间特征综合性研究还未涉及。笔者尝试运用景观生态学理论对河岸景观廊道二维断面空间表征进行模式化归纳,并提出不同模式下的河岸线状绿地匀质空间的优化设计策略,策略考虑了模式的空间、时间特征以及实践指导性;同时,在廊道纵深方向,利用廊道网络特征指数,进行河岸线状绿地匀质空间的网络空间结构定量分析;实现了城市河流景观的生态廊道三维特征辨识与优化,也为多尺度综合研究城市河流景观生态功能提供新视角、新途径。

关键词：风景园林生态廊道城市河流景观河岸空间模式河流廊道网络特征

The flexural property and its synergistic mechanism of multibody molded beetle elytron plates

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Science China(Technological Sciences) 2020年第5期63卷 768-776页

作者： YU XinDi ZHANG XiaoMing CHEN JinXiang ZHAO CaiQi ZHAO TiDong fu YaQin School of Civil Engineering Southeast UniversityNanjing 211189China College of Materials and Textiles Zhejiang Sci-Tech UniversityHangzhou 310018China

To improve the applications of beetle elytron plates(BEPs,which are biomimetic sandwich plates inspired by beetle elytra),the flexural performance and its synergistic mechanism of multibody molded BEPs were investigated via cantilever testing and finite element method(FEM).The results are summarized as follows.(1)Although debonding damage causes failure of the multibody molded BEPs and honeycomb plate and the reasonable range of trabecular size for BEPs is narrow,both the optimal loading capacity per mass and failure deformation of the BEPs are over two times those of the honeycomb plate.(2)A flexural synergistic mechanism is revealed in the trabecular-honeycomb core structure of BEPs;this mechanism causes the maximum deformation of core structure to gradually transfer from the honeycomb wall to the trabeculae with the increase inη(the ratio of the trabecular radius to the distance between the center points of two trabeculae),which means the different stretching behaviors in these core structures.(3)Unlike the compressive mechanism of BEPs,by controlling and balancing the deformation degrees of the trabeculae and honeycomb walls,the flexural mechanism achieves a minimum core deformation and an optimal flexural *** results suggest a qualitative relationship between the deformation behavior of trabecular-honeycomb core structure and bending performance of the whole BEP,and provide a solid foundation for subsequent research and the considerable application potential of this biomimetic sandwich structure in many fields.

关键词： beetle elytra BEP biomimetic structure sandwich structure honeycomb plate flexural property

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微重力气液两相环状流界面波特性分析

工程热物理学报 2006年第Z1期27卷 237-239页

作者：赵建福陈文学中国科学院力学研究所国家微重力实验室北京100080 中国水利水电科学研究院水力学研究所北京100038

本文利用双重小波包分解算法,对微重力气液两相环状流界面波特性进行了分析,将实验测量到的环状液膜厚度信号分解成相干分量和非相干分量,并对相干信号与非相干信号的特征进行了分析,提出了一个新的描述微重力气液两相环状流界面波特性... 详细信息

本文利用双重小波包分解算法,对微重力气液两相环状流界面波特性进行了分析,将实验测量到的环状液膜厚度信号分解成相干分量和非相干分量,并对相干信号与非相干信号的特征进行了分析,提出了一个新的描述微重力气液两相环状流界面波特性参数。

关键词：微重力气液两相流小波包界面波环状流

Enhanced removal of organic pollutant by separable and recyclable rGH-PANI/BiOI photocatalyst via the synergism of adsorption and photocatalytic degradation under visible light

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Journal of Materials Science & Technology 2021年第18期77卷 19-27页

作者： Xin Wang Jiaqian Zhu Xiang Yu Xionghui fu Yi Zhu Yuanming Zhang Department of Chemistry Jinan UniversityGuangzhou510632China Analytical&Testing Center Jinan UniversityGuangzhou510632China

A novel three-dimension separable and recyclable r GH-PANI/BiOI photocatalyst with the synergism of adsorption-enrichment and photocatalytic-degradation was successfully prepared via a facile three-step hydrothermal *** three-dimension reduced graphene oxide hydrogel(rGH)in with flower-like BiOI photocatalyst uniformly distributed not only possesses excellent adsorption and electron transport properties,but also is easy to be separated from water for *** addition,polyphenylamine(PANI)provides superior hole transport ability due to its delocalizedл-лconjugate *** cooperation of rGH and PANI greatly enhances the separation efficiency of photogenerated carriers,and finally improves the photocatalytic degradation *** removal rates of Rhodamine B(RhB)by rGH-PANI/BiOI-70%composite under visible light respectively reach 100%and 50.13%in static and dynamic systems,which are 12.85 and 3.58 times of BiOI,*** removal rate does not show decrease after 5 recycles indicating the excellent separable and recyclable property of rGH-PANI/BiOI *** work provides an essential reference for designing and constructing hydrogel-based ternary composite photocatalysts with excellent synergism of adsorption and photocatalysis,which shows great potential in the treatment of water pollution.

关键词： Reduced graphene oxide hydrogel Synergism Adsorption-enrichment Photocatalytic-degradation Separable Recyclable

Structures and energetics of semicoherent interfaces of precipitates in hcp/bcc systems:A molecular dynamics study

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Journal of Materials Science & Technology 2021年第8期67卷 50-60页

作者： Jin-Yu Zhang fu-Zhi Dai Zhi-Peng Sun Wen-Zheng Zhang Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Science and Technology of Advanced functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610041China

α/β(hcp/bcc)interfaces are of great importance in the microstructure development and the mechanical properties of titanium and zirconium *** work contributes to the study of interface energetics and interfacial structures of the precipitate in the hcp/bcc system based on a simulation study using molecular statics(MS)and molecular dynamics(MD).The input orientation relationship(OR)was calculated based on the O-line *** on the energy of the interfaces containing the invariant line(IL),two preferred facets were determined by the Wulff construction,which explained the observed orientations of the habit plane(HP)and the side facet(SF).The deviation of the observed precipitate morphology from the equilibrium shape was discussed in terms of interface *** structures of the interfaces surrounding a three-dimensional(3 D)precipitate,including the preferred facets and the end face,were obtained at the atomic *** simulated dislocation structures and atomic structures in these interfaces are in good agreement with those of the experimental observations for Ti-Cr alloys.A method was suggested for modifying the O-cell structure with the guidance of the relaxed structure,yielding consistency between the calculated dislocation structure based on the generalized O-element approach and the simulation results.

关键词： Interface Misfit dislocation Precipitate