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Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao Guo Hui Bojing Sun Dongfang Hou Meidi Wang Xueqian wu Tao wu Dong-sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Cadmium sulfide

Numerical modeling of solute transport in deformable unsaturated layered soil

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Water Science and Engineering 2017年第3期10卷 184-196页

作者： sheng wu Dong-sheng jeng Cities Research Institute Griffith School of EngineeringGriffith UniversitySouthport 4222Australia

The effect of soil stratification was studied through numerical investigation based on the coupled model of solute transport in deformable unsaturated soil. The theoretical model implied two-way coupled excess pore pressure and soil deformation based on Biot's consolidation theory as well as a one-way coupled volatile pollutant concentration field developed from the advection-diffusion theory. Embedded in the model, the degree of saturation, fluid compressibility, self-weight of the soil matrix, porosity variance, longitudinal dispersion, and linear sorption were computed. Based on simulation results of a proposed three-layer landfill model using the finite element method, the multi-layer effects are discussed with regard to the hydraulic conductivity, shear modulus, degree of saturation, molecular diffusion coefficient, and thickness of each layer. Generally speaking, contaminants spread faster in a stratified field with a soft and highly permeable top layer; soil parameters of the top layer are more critical than the lower layers but controlling soil thicknesses will alter the results. This numerical investigation showed noticeable impacts of stratified soil properties on solute migration results, demonstrating the importance of correctly modeling layered soil instead of simply assuming the averaged properties across the soil profile.

关键词： Solute transport Layered soil Consolidation Unsaturated soil Deformable media

A latest Permian non-reef calcisponge fauna from Laibin,Guangxi,southern China and its significance

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journal of Palaeogeography 2017年第1期6卷 60-68页

作者： Ya-sheng wu Key Laboratory of Petroleum Resource Research Chinese Academy of SciencesBeijing 100029China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

A calcisponge fauna occurs in uppermost Permian Conodont Clarkina meishanensis yini zone of the sequence exposed in the vicinity of Laibin, Guangxi Zhuang Autonomous Region, southern China. The fauna is dominated by one thalamid species, Arnblysiphonella vesiculosa de Koninck, 1863, and one new scterosponge genus and species, Radiofibrosclera laibinensis gen. et sp. nov. They are associated with a few other accessory species, including the thalamid sponges Amblysiphonella laibinensis Deng, 1981, Colospongia sp., Polvcystocoelia sp., and the inozoan sponge Acoelia discontinua sp. nov. Though the individuals are abundant, the species diversity is very low. Without common calcisponge components of Changhsingian reefal faunas, the assembtage is interpreted as not a reefal fauna. The water depth at which they dwelled was less than 105 m, and more probably tess than 40 m. Its occurrence indicates a significant sea-level drop at the end of Late Permian Changhsingian Age.

关键词： Upper Permian Calcisponge Laibin Palaeoecology Sclerosponge Tha[amid sponge Guangxi Southern China

Manufacturing and testing of X-ray imaging components with high precision

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光学精密工程 2005年第5期13卷 620-625页

作者： HU jia sheng wu Xü School of Electronic and Information Engineering Dalian University of Technology Dalian 116024China College of Information Technology Dalian Maritime University Dalian 116026 China

In the latest 20 years, X-ray imaging technology has developed rapidly in order to meet the needs of X-ray photo-etching,spatial exploration technology, high-energy physics, procedure diagnosis of ICF,etc. Since refractive indices of materials in the X-ray region are lower than 1, and X-ray is strongly absorbed by materials, the characteristics of X-ray increase greatly difficulty to obtain X-ray image. Conventional imaging methods are hardly suitable to X-ray range. In general, grazing reflective imaging and coding aperture imaging methods have been adopted more and *** have designed a non-coaxial grazing reflective X-ray microscope which is composed of four spherical mirrors, in order to satisfy the requirement of the diagnosis of inertial confinement fusion (ICF). The four mirrors have the same radius of curvature. The radius of each mirror is 29 000 mm and the aperture is 30 mm×15 mm. Allowable tolerance of the radius is ≤0.2% and one of surface roughness (rms) is ≤0.6 nm. Evidently it is very difficult to fabricate and test such mirrors. In order to obtain eligible mirrors, we choose 18 mirror roughcasts and array them on a round disk according to format. The combined manufacturing method can ensure high accordant quality. The fabricated mirrors are tested by both templet and double round aperture methods. Radius errors of the mirrors is about 53 mm. The surface roughness (rms) of the mirrors is inspected by the relative interferometric equipment (WYKO) and atomic force microscope. Before and after coating the measured surface roughness is averagely 0.52 nm and 0.4 nm, respectively.

关键词： X光线图像质量评价纳米精度

THE SECOND-ORDER HYDROELASTIC ANALYSIS OF A SWATH SHIP MOVING IN LARGE-AMPLITUDE WAVES

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journal of Hydrodynamics 2006年第6期18卷 631-639页

作者： TIAN Chao wu You-sheng School of Naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai 200030China China Ship Scientific Research Center Wuxi 214082 China

Based on the second order hydroelasticity theory of ships, the numerical methods and the calculated results of the non-linear hydroelastic responses of a ship traveling in rough seas were investigated. The non-linear hydrodynamic actions induced by the rigid body rotations and the variations of instantaneous wetted surface area were included in the second order analysis. The first order wave potentials and responses, which are sure to make the major contributions to the second order hydrodynamic actions, were obtained by employing the translating and pulsating source Green function and the Kelvin steady wave flow solution based on the linear three-dimensional hydroelasticity theory. The influences of the forward speed and the steady wave flow on the responses, and the differences of the predicted non-linear responses were illustrated by the numerical examples of a SWATH ship traveling with forward speed of 12 kn in irregular waves.

关键词： hydroelaticity, non-linear responses, second order forces, translating and pulsating source, SWATH (Small Waterplane Area Twin Hull) ship

Importance of proper renormalization scale-setting for QCD testing at colliders

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Frontiers of physics 2016年第1期11卷 27-37页

作者： Xing-Gang wu sheng-Quan Wang Stanley j. Brodsky Department of Physics Chongqing University Chongqing 401331 China School of Science Guizhou Minzu University Guiyang 550025 China SLA C National Accelerator Laboratory Stanford University Stanford CA 94039 USA

A primary problem affecting perturbative quantum chromodynamic （pQCD） analyses is the lack of a method for setting the QCD running-coupling renormalization scale such that maximally precise fixed-order predictions for physical observables are obtained. The Principle of Maximum Conformality （PMC） eliminates the ambiguities associated with the conventional renormalization scale-setting procedure, yielding predictions that are independent of the choice of renormalization scheme. The QCD coupling scales and the effective number of quark flavors are set orderby-order in the pQCD series. The PMC has a solid theoretical foundation, satisfying the standard renormalization group invariance condition and all of the self-consistency conditions derived from the renormalization group. The PMC scales at each order are obtained by shifting the arguments of the strong force coupling constant as to eliminate all non-conformal {βi} terms in the pQCD series. The {βi} terms are determined from renormalization group equations without ambiguity. The correct behavior of the running coupling at each order and at each phase-space point can then be obtained. The PMC reduces in the Nc → 0 Abelian limit to the Gell-Mann-Low method. In this brief report, we summarize the results of our recent application of the PMC to a number of collider processes, emphasizing the generality and applicability of this approach. A discussion of hadronic Z decays shows that, by applying the PMC, one can achieve accurate predictions for the total and separate decay widths at each order without scale ambiguities. We also show that, if one employs the PMC to determine the top-quark pair forward-backward asymmetry at the next-to-next-to-leading order level, one obtains a comprehensive, self-consistent pQCD explanation for the Tevatron measurements of the asymmetry. This accounts for the ＂increasing-decreasing＂ behavior observed by the DO collaboration for increasing tt invariant mass. At lower energies, the angular d

关键词： QCD proper renormalization scale-setting PMC high-energy colliders

A Note on a Quadratic Rational Map with Two Siegel Disks

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Acta Mathematica Sinica,English Series 2010年第7期26卷 1393-1402页

作者： Liang SHEN sheng jian wu Department of Mathematics Beijing Institute of Technology Beijing 100081 P. R. China LMAM School of Mathematical Sciences Peking University Beijing 100871 P. R. China

Suppose f（z） is a quadratic rational map with two Siegel disks. If the rotation numbers of the Siegel disks are both of bounded type, the Hausdorff dimension of the julia set satisfies Dim （j（f））〈2.

关键词： Hausdorff dimension Siegel disk porous set

Targeting necroptosis in anticancer therapy:mechanisms and modulators

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Acta Pharmaceutica Sinica B 2020年第9期10卷 1601-1618页

作者： Ying wu Guoqiang Dong Chunquan sheng School of Pharmacy Second Military Medical UniversityShanghai 200433China School of Pharmaceutical Sciences Zhengzhou UniversityZhengzhou 450001China

Necroptosis,a genetically programmed form of necrotic cell death,serves as an important pathway in human *** a critical cell-killing mechanism,necroptosis is associated with cancer progression,metastasis,and *** necroptosis pathway by small molecule modulators is emerging as an effective approach in cancer therapy,which has the advantage to bypass the apoptosis-resistance and maintain antitumor ***,a better understanding of the mechanism of necroptosis and necroptosis modulators is necessary to develop novel strategies for cancer *** review will summarize recent progress of the mechanisms and detecting methods of *** particular,the relationship between necroptosis and cancer therapy and medicinal chemistry of necroptosis modulators will be focused on.

关键词： Cell death Necroptosis Inducers Inhibitors Anticancer therapy

A fault diagnosis model based on weighted extension neural network for turbo-generator sets on small samples with noise

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Chinese journal of Aeronautics 2020年第10期33卷 2757-2769页

作者： Tichun WANG jiayun WANG Yong wu Xin sheng College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Business Strategy and Innovation Griffith UniversityGold Coast CampusQLD 4222Australia School of Business Jiangsu Open UniversityNanjing 210036China

In data-driven fault diagnosis for turbo-generator sets,the fault samples are usually expensive to obtain,and inevitably with noise,which will both lead to an unsatisfying identification performance of diagnosis *** address these issues,this paper proposes a fault diagnosis model for turbo-generator sets based on Weighted Extension Neural Network(W-ENN).WENN is a novel neural network which has three types of connection weights and an improved correlation *** performance of the proposed model is validated against Extension Neural Network(ENN),Support Vector Machine(SVM),Relevance Vector Machine(RVM)and Extreme Learning Machine(ELM)based *** results indicate that,on noisy small sample sets,the proposed model is superior to the other models in terms of higher identification accuracy with fewer samples and strong noise-tolerant *** findings of this study may serve as a powerful fault diagnosis model for turbo-generator sets on noisy small sample sets.

关键词： Fault diagnosis Samples with noise Small samples learning Turbo-generator sets Weighted Extension Neural Network