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Green Energy & Environment 2017年第2期2卷 134-141页

作者： Canbin Ouyang shi feng Jia Huo Shuangyin wang State Key Laboratory of Chem/Bio-Sensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and Devices College of Chemistry and Chemical Engineering Hunan University

Developing non-expensive, highly active and highly stable electrocatalysts for hydrogen evolution has aroused extensive attention, owing to the necessity of novel clean and sustainable energy carriers. In this paper, we report a synthesis of free-standing three-dimensional hierarchical MoS_2/CoS_2 heterostructure arrays through a convenient process. The investigation of electrocatalytic HER performance suggests that the MoS_2/CoS_2 hybrid catalyst exhibits significant enhancement in HER(onsetpotential and potential at a current density of 100 mA cm^(-2) are 20 mV and125 mV, respectively) and superior durability(no shift of current density is observed after a continuous scanning of 3000 times) compared with individual CoS_2 and MoS_2. The superior HER performance was attributed to the formation of the interface between CoS_2 and MoS_2 through the electrochemical characterization, Raman, XPS analysis, and the control experiment. The lower onsetpotential, higher current density, excellent durability, and the free-standing structure of the three-dimensional hierarchical MoS_2/CoS_2 heterostructure array make it a promising cathode catalyst suitable for widespread application.

关键词： MoS2/CoS2 Heterostructure array Free-standing Hydrogen evolution reaction

Preparations and characterizations of two MOFs constructed with hydroxylphenyl imidazole dicarboxylate

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Chinese Chemical Letters 2015年第9期26卷 1059-1064页

作者： Ji-feng wang Bing-Bing shi Gang Li College of Chemistry and Molecular Engineering Zhengzhou University

Using the hydrothermal reactions of Mn（Ⅱ） and Ba（Ⅱ） salts with 2-（3-hydroxylphenyl）-1H-imidazole-4,5-dicarboxylic acid（m-OHPhH3IDC）,two novel metal-organic frameworks,namely,{[Mn（mOHPhHIDC）（H2O）]2H2On（1） and {[Ba（m-OHPhH2IDC）2（H2O）3]-2H2O）n,（2） have been synthesized and structurally characterized by single-crystal X-ray crystallography,elemental analyses,and IR *** 1 features a novel non-interpenetrated three-dimensional（3,4）-connected network with one-dimensional open *** 2 exhibits a two-dimensional layered structure with rhombic *** role of the central metals in the formation of final architectures has been ***,luminescent and thermal properties of the two complexes have been studied.

关键词： Imidazole dicarboxylate Metal-organic frameworks Manganese Barium Property

The Perturbed Problem on the Boussinesq System of Rayleigh-Bénard Convection

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Acta Mathematicae Applicatae Sinica 2014年第1期30卷 75-88页

作者： Jian-guo shi Shu wang Ke wang feng-ying HE College of Applied Sciences Beijing University of Technology Department of Mathematics Huanghuai University Zhoukou Vocational and Technical College

In this paper,the infinite Prandtl number limit of Rayleigh-B′enard convection is *** well prepared initial data,the convergence of solutions in L∞（0,t;H2（G）） is rigorously justified by analysis of asymptotic ex... 详细信息

关键词： infinite Prandtl number limit Rayleigh-B^nard convection boussinesq system asymptotic expansions iterative techniques

Polyaniline-supported tungsten-catalyzed oxidative deoximation reaction with high catalyst turnover number

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Chinese Chemical Letters 2023年第1期34卷 347-350页

作者： Wen Li feng wang Yaocheng shi Lei Yu School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

Polyaniline-supported tungsten(W@PANI)was easily prepared by immersing polyaniline(PANI)in the aqueous solution of *** was found to be an efficient catalyst for oxidative deoximation reaction,the very important transformation for pharmaceutical *** the green features,the method employed very few of catalytic tungsten(0.048 mol%*** substrates),resulting in the high turnover numbers(TONs)of the catalyst(ca.103 mol/mol)and the low metal residues in product(<0.1 ppm).The reaction is applicable for a variety of substrates,including those containing heterocycles,which are key intermediates in medicine *** has also been successfully magnified to kilogram scale production to afford the desired carbonyl products smoothly.

关键词： Deoximation Carbonyl Tungsten Free radical reaction Oxidation

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反渗透海水淡化的预处理技术研究进展

天津化工 2004年第6期18卷 12-14页

作者：杜慧玲冯世宏王建中辽宁工学院材料与化学工程学院辽宁锦州121001

本文分析了国内外关于反渗透海水淡化预处理技术的应用研究现状,并对预处理技术的发展趋势做了展望。

关键词：反渗透海水淡化预处理

Differences in leaf physiological and morphological traits between Camellia japonica and Camellia reticulata

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Plant Diversity 2020年第3期42卷 181-188页

作者： Ji-Hua wang Yan-Fei Cai shi-feng Li shi-Bao Zhang Flower Research Institute of Yunnan Academy of Agricultural Sciences KunmingChina Key Laboratory for Economic Plants and Biotechnology Kunming Institute of BotanyChinese Academy of SciencesKunmingChina National Engineering Research Center for Ornamental Horticulture KunmingChina

Plants of the genus Camellia are widely cultivated throughout the world as ornamentals because of their bright and large *** widely cultivated varieties are mainly derived from the mutant lines and hybrid progenies of Camellia japonica *** Camellia reticulata *** their geographical distributions and environmental adaptabilities are significantly different,no systematic comparison has been conducted between these two *** investigate differences in how these plants have adapted to their environments,we measured photosynthesis and 20 leaf functional traits of *** and *** grown under the same *** with ***,*** showed higher values for light saturation point,light-saturated photo synthetic rate,leaf dry mass per unit area and stomatal area,but lower values for apparent quantum efficiency,leaf size,stomatal density and leaf nitrogen content per unit *** area was positively correlated with light-saturated photosynthetic rate and light saturation point,but negatively correlated with stomatal *** differences between *** and *** were mainly reflected in their adaptations to light intensity and leaf morphological *** is better adapted to high light intensity than *** difference is related to the two species’ differing life fo ***,leaf morphological traits have played an important role in the light adaptation of *** and ***,and might be first noticed and selected during the breeding *** findings will contribute to the cultivation of camellia plants.

关键词： Camellia Light adaptation Leaf traits Ornamental plant Photosynthesis

A novel cross-modal hashing algorithm based on multimodal deep learning

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Science China(Information Sciences) 2017年第9期60卷 50-63页

作者： Wen QU Daling wang shi feng Yifei ZHANG Ge YU School of Information Science and Engineering Northeastern University Key Laboratory of Medical Image Computing

With the growing popularity of multimodal data on the Web, cross-modal retrieval on large-scale multimedia databases has become an important research topic. Cross-modal retrieval methods based on hashing assume that there is a latent space shared by multimodal features. To model the relationship among heterogeneous data, most existing methods embed the data into a joint abstraction space by linear projections. However,these approaches are sensitive to noise in the data and are unable to make use of unlabeled data and multimodal data with missing values in real-world applications. To address these challenges, we proposed a novel multimodal deep-learning-based hash(MDLH) algorithm. In particular, MDLH uses a deep neural network to encode heterogeneous features into a compact common representation and learns the hash functions based on the common representation. The parameters of the whole model are fine-tuned in a supervised training *** on two standard datasets show that the method achieves more effective results than other methods in cross-modal retrieval.

关键词： hashing cross-modal retrieval cross-modal hashing multimodal data analysis deep learning

Control Structure Analysis and Recovery of Embedded Binaries

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Chinese Journal of Electronics 2017年第6期26卷 1118-1124页

作者： JI Weixing HUO Yuanhong wang Yizhuo GAO Yujin shi feng Beijing Institute of Technology

Existing decompilers use rule-based algorithms to transform unstructured Control flow graph(CFG) into equivalent high-level programming language constructs with "goto" statements. One problem of such approaches is that they generate a large number of "goto"s in the output code, which reduce the readability and hinder the understanding of input binaries. A global search algorithm is proposed based on structural analysis. This algorithm restructures a CFG and generates fewer number of "goto" statements than the rule-based algorithm *** also present a Genetic algorithm(GA) for the global search approach to locate near optimal solutions for large CFGs. Evaluation results on a set of real CFGs show that the genetic algorithm-based heuristic for global search is capable of finding high-quality solutions.

关键词： Decompiling Control flow graph restructuring Structural analysis Genetic algorithm(GA)

Leaf physiological and anatomical responses of two sympatric Paphiopedilum species to temperature

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Plant Diversity 2022年第1期44卷 101-108页

作者： Jing-Qiu feng Ji-Hua wang shi-Bao Zhang Key Laboratory of Economic Plants and Biotechnology Yunnan Key Laboratory for Wild Plant ResourcesKunming Institute of BotanyChinese Academy of SciencesKunming650201YunnanChina University of Chinese Academy of Sciences Beijing100049China Flower Research Institute of Yunnan Academy of Agricultural Sciences Kunming650205YunnanChina

Paphiopedilum dianthum and *** are two endangered orchid species,with high ornamental and conservation *** are sympatric species,but their leaf anatomical traits and flowering period have significant ***,it is unclear whether the differences in leaf structure of the two species will affect their adaptabilities to ***,we investigated the leaf photosynthetic,anatomical,and flowering traits of these two species at three sites with different temperatures(Kunming,16.7±0.2°C;Puer,17.7±0.2°C;Menglun,23.3±0.2°C)in southwest *** with those at Puer and Kunming,the values of light-saturated photosynthetic rate(Pmax).stomatai conductance(gs),leaf thickness(LT),and stomatai density(SD)in both species were lower at *** values of Pmax,gs,仃,adaxial cuticle thickness(CTad)and SD in *** were higher than those of *** at the three *** with ***,there were no flowering plants of *** at *** results indicated that both species were less resistance to high temperature,and *** had a stronger adaptability to high-temperature than *** findings can provide valuable information for the conservation and cultivation of Paphiopedilum species.

关键词： Conservation Cultivation High-temperature Leaf anatomy Paphiopedilum Photosynthesis

Spatiotemporal characteristics and influencing factors of vegetation water use efficiency on the Tibetan Plateau in 2001–2020

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Journal of Geographical Sciences 2025年第1期 39-64页

作者： HE Chenyang wang Yanjiao YAN feng LU Qi School of Ecological and Environmental Science East China Normal University Institute of Ecological Conservation and Restoration Chinese Academy of Forestry National Climate Center China Meteorological Administration

Water use efficiency （WUE）,as a pivotal indicator of the coupling degree within the carbon–water cycle of ecosystems,holds considerable importance in assessment of the carbon–water balance within terrestrial ***,in the context of global warming,WUE evolution and its primary drivers on the Tibetan Plateau remain *** study employed the ensemble empirical mode decomposition method and the random forest algorithm to decipher the nonlinear trends and drivers of WUE on the Tibetan Plateau in 2001–*** indicated an annual mean WUE of 0.8088 gC/mm·m2across the plateau,with a spatial gradient reflecting decrease from the southeast toward the *** manifesting monotonous trends of increase or decrease in WUE accounted for 23.64%and 9.69%of the total,***,66.67%of the region exhibited trend reversals,i.e.,39.94%of the area of the Tibetan Plateau showed transition from a trend of increase to a trend of decrease,and 26.73%of the area demonstrated a shift from a trend of decrease to a trend of *** factors accounted for 70.79%of the variability in *** leaf area index and temperature served as the major driving forces of WUE variation.

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