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The study of electroless Ni-W-P alloy plating on glass fibers

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Rare Metals 2007年第4期26卷 365-371页

作者： HUANG ying HUANG Fei zhao Wentao SHI Ke zhao Li WANG Yanli DeparUnent of Applied Chemistry School of Science Northwestern Polytechnical University Xi＇an 710072 China

Ni-W-P coatings were deposited on the surface of glass fibers by the electroless plating process. The bath was very stable through the palladium salt test. There was no phenomenon of peeling and blistering on the surface of the Ni-W-P alloy glass fibers in the thermal shock test. It showed that the deposit had high impact strength and good adhesion. The morphology of the coatings was observed by scanning electron microscope （SEM）. The elements and their contents were tested and analyzed by energy dispersion spectrometer （EDS）. The tungsten content reached up to 12.1 wt.%. The effects of the concentrations of NiSO4, Na2WO4, and NaH2PO2.H20 on the conductivity of the coatings were studied. The resistivity of the Ni-W-P alloy glass fibers reached 7.39 × 10^-3 Ωcm. The alloy coatings on glass fibers were analyzed by XRD. The results indicated that the deposit had an amorphous structure and good heat stability. The suitable work temperature range was lower than 190℃. Finally, the electromagnetic parameters of the Ni-W-P alloy glass fibers were tested and analyzed primarily. The magnetic loss reached 0.04023 and the dielectric loss reached -5.80239. The plated alloy is a kind of soft magnetic material.

关键词： Ni-W-P alloy electroless plating resistivity electromagnetic parameters glass fiber

Dissipative Particle Dynamics Simulations of Domain Growth and Phase Separation in Binary Immiscible Fluids

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Chinese Journal of Chemical Physics 2008年第5期21卷 451-456页

作者： ying zhao Hong Liu Zhong-yuan Lu Chia-chung Sun State Key Laboratory of Theoretical and Computational Chemistry Institute of Theoretical ChemistryJilin University Changchun 130023 China

It was investigated that the domain growth processes of spinodal decomposition with different quenching depth in two and three dimensional binary immiscible fluids by using parallel dissipative particle dynamics simulations. In two dimensions, the dynamic scaling exponent 1/2 for coalescence and 2/3 for inertial regimes in the shallow quench and strong finite size effects in the cases of deep quenching were obtained. In three dimensions, it was used that the diffusive regime with exponent n=l/3 in the shallow quench and the inertial hydrodynamic regime with n=2/3 for different quenches. The viscous effects are not clearly reflected, showing n=1/2 in both shallow and deep quenches in this time period, due to the soft nature of interaction potential adopted in dissipative particle dynamics.

关键词： Dissipative particle dynamics Binary immiscible fluids Domain growth

Hydrocarbon Micro-Seepage Detection by Altered Minerals Mapping from Airborne Hyper-Spectral Data in Xifeng Oilfield,China

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Journal of Earth Science 2017年第4期28卷 656-665页

作者： Shengbo Chen ying zhao Liang zhao Yanli Liu Chao Zhou College of Geo-Exploration Science and Technology Jilin UniversityChangchun 130026China

Hydrocarbon micro-seepage can cause oxidation reduction reactions and produce altered minerals in surface sediments and soft. The typical altered minerals mapping by their diagnostic spectral features on hyper-spectral images is an important tool for the petroleum exploration industry. In this study, the airborne hyper-spectral data were used to investigate the altered minerals induced by hydrocarbon micro-seepages by spectral feature fitting （SFF） in the loess coverage area of Xifeng Oflfield. The results re- veal that the distribution region of the altered minerals induced by hydrocarbon micro-seepage is larger than the known oilfield exploration area. The potential hydrocarbon micro-seepage region was also re- vealed by the distribution of altered minerals besides the known hydrocarbon area. A fast index was pro- posed by the absorption depths of clay and carbonate minerals for assessment of hydrocarbon micro- seepage. And it gave much clearer boundaries for the hydrocarbon micro-seepage in the loess coverage area than those by the altered mineral mapping. In addition, some field samples were analyzed by X-ray diffrac- tion （XRD） and atomic absorption spectrophotometer to validate the results. Within the extents of hydro- carbon micro-seepage, there are lower contents of ferric iron and higher contents of carbonate minerals in these samples. Therefore, it is satisfactory to have the airborne hyper-spectral data to outline the extents of hydrocarbon micro-seepage for further hydrocarbon exploration in the loess coverage area.

关键词： hydrocarbon micro-seepage loess coverage airborne hyper-spectral imager altered minerals mapping.

RECENT PROGRESS ON PARTICLE IMAGE VELOCIMETRY IN CHINA

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Journal of Hydrodynamics 2006年第1期18卷 11-19页

作者： LIU ying-zheng CAO zhao-min School of Mechanical and Power Engineering Shanghai Jiaotong University Shanghai 200030 China

An up-to-date review of recent progress on Particle Image Velocimetry （PIV） instrumentations was extensively presented in the paper. Around 80 literatures were referenced. Among various aspects of PIV advances, the present concern was mainly placed on progresses of advanced algorithms and microscopic PIV. Attention was specifically directed toward contributions of domestic researchers to these subjects, which were stressed throughout the discussion. In addition, diverse applications of PIV technology in China, e. g., turbulence measurement, hydrodynamics, rotating flows, two-phase flows, were specifically summarized.

关键词： Particle Image Velocimetry (PIV) algorithm microscopic PIV review

Effect of Zishenshengxue capsule on myelosuppression in mice induced by cyclophosphamide

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Journal of Traditional Chinese Medicine 2013年第2期33卷 233-237页

作者： Wei Li ying zhao Xinna Li Department of Pharmacy Harbin Commercial University

OBJECTIVE:To explore the inhibitory effect of Zishenshengxue capsule(ZSC) on myelosuppression in mice induced by ***:Kunming mice were randomly assigned into a control group,myelosuppression group,or groups for mice with myelosuppression receiving high dose ZSC,middle dose ZSC,low dose ZSC or *** was induced by peritoneal injection of *** and cyclophosphamide were administered *** numbers of peripheral blood cells and bone marrow karyocytes were *** proliferation activity and colony formation of granulocyte-monocyte series hemopoietic progenitor cells(C-GMs) and cell cycle were ***:The numbers of white blood cells in the middle and high dose ZSC groups were significantly increased at the 12th and 13th day(P<0.01) and bone marrow karyocytes and cell proliferation activity increased in the high dose ZSC group(P<0.01) compared with the myelosuppression group.C-GMs of middle and high dose ZSC groups significantly increased(P<0.01).The percentage of G 1 phase in the high dose ZSC group decreased(P< 0.01) and the percentage of S and G 2 phase increased(P<0.01).CONCLUSION:ZSC increased the numbers of peripheral white blood cells,bone marrow karyocytes and *** also increased cell proliferation activity and removed the G 1 phase ***,ZSC could reduce myelosuppression in mice induced by cyclophosphamide.

关键词： Myelosuppression Cell proliferation Cell cycle Zishenshengxue capsule

A Study of the Distribution of Apple stem pitting virus in Tissues of Pear Tree Using In Situ Hybridization and In Situ RT-PCR

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Agricultural Sciences in China 2009年第11期8卷 1351-1359页

作者： zhao ying LIU Na NIU Jian-xin Horticultural Department Agricultural College Shihezi University Shihezi 832003 P.R. China

To understand the distribution of Apple stem pitting virus （ASPV） in tissues of pear tree and provide directly theorical and technical support for shoot tips detoxication, leaves and shoot tips of Korla pear were used as the materials, cDNA probe for ASPV was synthesized through RT-PCR reaction system using the unradioactive digoxigenin-labeled probe, and the specificity and sensitivity of probe were verified by blot hybridization method. Paraffin slice for in situ PCR and in situ hybridization was made and the location and distribution of ASPV RNA were detected in paraffin slices using in situ reverse transcription polymerase chain reaction, and the important factors which influenced the experiment results were optimized. ASPV mainly distributed in palisade tissue of mesophyll cells, external cortex of the tip, and the corresponding newborn vascular bundles. 20 min was the suitable digestive time for proteinase K. For the better amplication, RT reaction system should be above 0.2 U μL^-1 and 0.4 mmol L^-1 for RNasin and dNTPs respectively, 0.1-1.3 U μ L^-1 SuperScript Ⅱ, 0.6- 0.8 μmol L^-1 primer concentration, and above 0.5 U 100 μL^-1 LA Taq DNA polymerase. The suitable annealing temperature in PCR reaction was 60℃ with 35 cycles. The apical meristem of 0.25 mm was the region of virus-free.

关键词： Korla pear Apple stem pitting virus cDNA probe digoxigenin in situ PCR

An Energy Stable Filtered Backward Euler Scheme for the MBE Equation with Slope Selection

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Numerical Mathematics(Theory,Methods and Applications) 2023年第1期16卷 165-181页

作者： Jiexin Wang Hong-Lin Liao ying zhao School of Mathematics Nanjing University of Aeronautics and AstronauticsNanjing 211106China Key Laboratory of Mathematical Modelling and High Performance Computing of Air Vehicles(NUAA) MIITNanjing 211106China

As a promising strategy to adjust the order in the variable-order BDF algorithm,a time filtered backward Euler scheme is investigated for the molecular beam epitaxial equation with slope *** temporal second-order convergence in the L^(2)norm is established under a convergence-solvability-stability(CSS)-consistent time-step *** CSS-consistent condition means that the maximum stepsize limit required for convergence is of the same order to that for solvability and stability(in certain norms)as the small interface parameterε→0^(+).Similar to the backward Euler scheme,the time filtered backward Euler scheme preserves some physical properties of the original problem at the discrete levels,including the volume conservation,the energy dissipation law and L^(2)norm *** tests are included to support the theoretical results.

关键词： MBE model time filter energy dissipation law error estimate

The marriage of dual-acceptor strategy and C-H activation polymerization:naphthalene diimide-based n-type polymers with adjustable molar mass and decent performance

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Science China Chemistry 2023年第2期66卷 548-561页

作者： ying-Han zhao Wenhao Li Tao Shen Yan zhao Yunqi Liu Yang Wang Laboratory of Molecular Materials and Devices Department of Materials ScienceFudan UniversityShanghai200438China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China

The development of readily accessible high-mobility n-type semiconducting polymers is in great demand for realizing highperformance p-n junction-based organic *** this study,we demonstrate that with the combination of dual-acceptor strategy and C-H direct arylation polymerization(DAr P),unipolar n-type semiconducting polymers can be conveniently *** tuning the monomer concentration,three dual-acceptor polymers,namely,poly(naphthalene diimide-alt-dithiophenyl pyrrolopyrrole-dione)(PNDI-DPP),poly(naphthalene diimide-alt-dithiophenyl isoindigo)(PNDI-IID),and poly(naphthalene diimide-alt-dithiophenyl bezothiadiazole)(PNDI-BT)can be obtained via C-H activation with decent number average molecular weight of~10 to 30 kg mol^(-1)and relatively narrow polydispersity index of~*** addition,these polymers are defect-free in nature as evidenced by the nuclear magnetic ***,we attribute the different molar masses of the three copolymers under the same DAr P condition to the differentα-C-H acidity,which may stem from different electronwithdrawing capability of the hydrogenated acceptor ***,the influence of the hydrogenated acceptor monomers on the optical,electrochemical and charge transporting properties is comprehensively *** the three dual-acceptor polymers,PNDI-BT demonstrates the highest electron mobilities of up to 0.6 cm^(2)V^(-1)s^(-1)in unipolar n-type organic transistors because of its relatively planar backbone,larger overlaps of the lowest unoccupied molecular orbital and strong *** that the transistor performance of PNDI-BT synthesized via C-H activation in this study is at least comparable to the one made by conventional C(sp^(2))-C(sp^(2))Stille or Suzuki cross-coupling *** study demonstrates the presented protocol can be a useful platform for sustainable and convenient synthesis of high-performance n-type semiconducting polymers.

关键词： n-type polymers C-H activation dual-acceptor strategy naphthalene diimide organic thin-film transistors

Water quality forecast through application of BP neural network at Yuqiao reservoir

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第9期8卷 1482-1487页

作者： zhao ying NAN Jun CUI Fu-yi GUO Liang School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China

This paper deals with the study of a water quality forecast model through application of BP neural network technique and GUI (Graphical User Interfaces) function of MATLAB at Yuqiao reservoir in Tianjin. To overcome the shortcomings of traditional BP algorithm as being slow to converge and easy to reach extreme minimum value,the model adopts LM (Leven-berg-Marquardt) algorithm to achieve a higher speed and a lower error rate. When factors affecting the study object are identified,the reservoir's 2005 measured values are used as sample data to test the model. The number of neurons and the type of transfer functions in the hidden layer of the neural network are changed from time to time to achieve the best forecast results. Through simulation testing the model shows high efficiency in forecasting the water quality of the reservoir.

关键词： Water quality forecast BP neural network MATLAB Graphical User Interfaces (GUI)