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AIE-active Polymers for Explosive Detection

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Chinese Journal of Polymer Science 2017年第2期35卷 141-141,142-154页

作者： Yong-wei wu 秦安军唐本忠 Guangdong Innovative Research Team State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science & Technology

Super-sensitive and ultra-selective detection of explosives plays a crucial role in anti-terrorism operations, homeland security, civilian safety and environment protection. Among the developed fluorescent probes, the polymers with aggregation-induced emission （AIE） characteristics have drawn much attention due to their bright emission in the aggregate and solid states. However, no review has summarized the development of AIE-active polymers for explosive detection. Herein, we reviewed the recent progress on using AIE-active polymers to detect explosives with super-amplification quenching effect. Moreover, the challenges and opportunities in this area were also briefly discussed.

关键词： Aggregation-induced emission Polymer Explosive Fluorescent sensor Super-amplification effect

ON NECESSITY OF PLACING AN AERATOR IN THE BOTTOM DISCHARGE TUNNEL AT THE LONGTAN HYDROPOWER STATION

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Journal of Hydrodynamics 2006年第6期18卷 698-701页

作者： wu Jian-hua wu wei-wei RUAN Shi-ping College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 China

The air entrainment for avoiding cavitation damage has been widely used in long free flow tunnels. It is crucial to determine whether an aerator is needed for shorter tunnels. In this article, the bottom discharge tunnel at the Longtan Hydropower Station was involved, for which the free flow tunnel section was only 50.00 m long. The cavitation in the tunnel with and without the aerator was investigated using the physical models of the scale 1/30, through the measurements of cavitation noise. The experimental results show that it is necessary to place the aerator at the inlet of the free flow section for higher reservoir level to protect this tunnel from cavitation damage.

关键词： aerator bottom discharge tunnel cavitation damage cavitation noise Longtan Hydropower Station

Operator Jensen's Inequality on C*-algebras

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Acta Mathematica Sinica,English Series 2014年第1期30卷 35-50页

作者： Xin LI wei wu Department of Mathematics East China Normal University

A real continuous function which is defined on an interval is said to beA-convex if it is convex on the set of self-adjoint elements,with spectra in the interval,in all matrix algebras of the unital C-algebra *** give... 详细信息

关键词： Jensen's inequality C-algebra A-convex function Bochner integral unital A-field

HYDRAULIC RESEARCH OF AERATORS ON TUNNEL SPILLWAYS

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Journal of Hydrodynamics 2007年第3期19卷 330-334页

作者： RUAN Shi-ping wu Jian-hua wu wei-wei XI Ru-ze College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 China Anhui Institute of Hydraulic Research Bengbu 233000 China

The selection of the configuration and size of an aerator was of importance for a tunnel spillway under the conditions of high speed flows. Experimental investigations were conducted on the effects of entrained air on the tunnel spillway in the Goupitan Project, based on the criterion of gravity similarity and the condition of aerated flow velocity of over 6 m/s, with physical models. The configurations of the aerators were presented of a larger bottom air concentration, to protect the tunnel spillway from cavitation as well as to see no water fills in the grooves.

关键词： cavitation aerator air concentration tunnel spillway the Goupitan Project

Almost Periodic Type Group Actions on Compact Quantum Metric Spaces

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Acta Mathematica Sinica,English Series 2024年第2期40卷 568-594页

作者： Bo Tao LONG wei wu College of Mathematics MIIT Key Laboratory of Mathematical Modelling and High Performance Computing of Air VehiclesNanjing University of Aeronautics and AstronauticsNanjing 211106P.R.China School of Mathematical Sciences Shanghai Key Laboratory of Pure Mathematics and Mathematical PracticeEast China Normal UniversityShanghai 200241P.R.China

A compact quantum metric space is a complete order unit space A endowed with a Lipnorm *** give some characterizations of almost periodic type group actions on a compact quantum metric space(A,L)by means of several kinds of subsets of A,its induced equicontinuous actions on several important subsets of the dual Banach space A*,and the Lip-norm L with its induced metric space structures on the state space S(A)of A.

关键词： Lip-norm compact quantum metric space Lipschitz isomorphism almost periodicity Arzela-Ascoli theorem metric set

Wrinkle analysis of a space planar film reflect-array

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第1期12卷 24-32页

作者： wei-wei XIAO wu-jun CHEN Gong-yi FU Space Structures Research Centre Shanghai Jiao Tong University Shanghai 200030 China

The presence of wrinkles in a membrane is the main factor that induces surface errors on space planar film reflect-arrays. Based on the commercial finite element (FE) package ABAQUS, a numerical procedure for membrane wrinkle analysis was set up, and used to analyze a square planar film reflect-array under pure shear force to evaluate its induced wrinkle characteristics. First, the effect of shear force on the wrinkle pattern of the array was studied and validated by experiment. Second, the effect of prestress was studied. When the prestress increases, the quantity of the wrinkles increases, and the amplitude of the wrinkles decreases. Third, the influence of the boundary conditions was investigated. A frame side edge structure has a relatively smooth surface, but also relatively high stress. Finally, the behavior of a joint seam was analyzed. The results indicate that a joint band has a significant influence on the wrinkle pattern of the membrane.

关键词： Space planar film reflect-array Wrinkle analysis Joint seam

Tribological analysis of the surface layer coated by sintered serpentine-reinforced composites

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Acta Metallurgica Sinica(English Letters) 2018年第6期31卷 615-622页

作者： Xiao Wang Jun-wei wu Lu-Hai Zhou Xi-Cheng wei wu-Rong Wang School of Materials Science and Engineering Shanghai University

In this work,the serpentine powders were sintered to make the serpentine-reinforced Al-matrix composites,and the microstructures of which were characterized by differential scanning calorimetry,thermal gravimetric analyzer,and X-ray *** electron microscopy equipped with energy dispersive *** show that the sintered serpentine powders were deeply absorbed on the worn surface and embedded in the furrows and scratches of the matrix,forming a self-repairing surface layer which reduces the friction *** surface layer coated by serpentine was compact,dense,and uniform with the friction time prolonged,compensating the worn loss and increasing the matrix mass.

关键词： Serpentine Friction Wear Surface layer

Column envelope meshing pair and its design method for single screw compressors

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第1期10卷 31-36页

作者： wei-feng wu Quan-ke FENG School of Energy and Power Engineering Xi 'an Jiaotong University Xi 'an 710049 China

A single screw compressor (SSC) is an important component found in many refrigeration ***,the durability is not so good because of the friction between its meshing *** the column envelope meshing pair was pro-posed to prolong the operating life of SSCs,although it has not been applied to commercial refrigeration *** accelerate the industrial application,a mathematical model for analyzing the column envelope meshing pair is established based on the geometry and *** giving the flanks of column envelope grooves are obtained,and teeth flank meshing with the groove is *** show that this model could be applicable in the design of the column envelope type SSC.

关键词： Column envelope Single screw compressor (SSC) Meshing pair design Mathematical model

Influence of groove surface texture on temperature rise under dry sliding friction

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Science China(Technological Sciences) 2016年第2期59卷 183-190页

作者： wu wei SHAO TianMin CHEN GuiMing State Key Laboratory of Tribology Tsinghua University Beijing 100084 China Xi'an Research Institute of High Technology Xi'an 710025 China

Parallel groove surface textures with different area densities were fabricated on ASTM 1045 steel. Friction tests were con- ducted under dry sliding condition. Temperature rise, friction coefficient and wear of both the textured and untextured speci- mens were studied. An embedded K-type thermocouple beneath the friction surfaces was employed to measure frictional tem- perature rise. The results indicated that the temperature rise of the textured specimen was obviously reduced compared with that of the untextured specimen, although the difference between the friction coefficients was not significan.. The specimen with high texture density exhibited a small temperature rise. The difference in temperature rise between the specimens with different texture densities can be primarily attributed to differences in heat dissipation and energy allocation between the tri- bo-pairs caused by the textured structure. The energy consumed by wear and plastic deformation was small in ~：omparison with the total energy input by friction, thus, the influence of these factors on temperature rise can be considered to be~ negligible.

关键词： groove surface texture temperature rise heat dissipation wear plastic deformation