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Yin S.M.,Shenyang University of Chemical Technology | Li S.X.,CAS Shenyang Institute of Metal Research
Journal of Materials Science and Technology | Year: 2013

Cyclic deformation and fatigue behaviors of Mg-12%Gd-3%Y-0.5%Zr (wt%, GW123K) alloy were investigated at room temperature under axial cyclic loading in strain controlled condition. It is shown that conventional extruded GW123K alloy maintained cyclic stability at strain amplitudes ranging from 2×10-3 to 10-2. The pronounced symmetric hysteresis loops were also observed during cyclic loading. Fracture surface observations indicated that fatigue cracks mainly initiated at large Gd-riched phase or at inclusion clusters at surface or subsurface, and grain boundary (GB) and slip bands (SBs) are also preferential sites for micro-crack incubation. © 2013.

Wang K.,Anshan Normal University | Gao E.,Shenyang University of Chemical Technology
Journal of Coordination Chemistry | Year: 2014

Two Co(II) coordination polymers, {[Co(bdc)(bib)(H2O)] ·H2O}n (1) and {[Co(bdc)(bibp)]}n (2), where H2bdc = 1,4-benzenedicarboxylic acid, bib = 1,4-bis(1-imidazolyl)benzene, and bibp = 4,4′-bis(imidazolyl)biphenyl, have been synthesized by solvothermal methods and characterized by IR spectra, element analyses, thermal analysis, powder X-ray diffraction, and single crystal X-ray diffraction. Complex 1 exhibits a 3-D pillared-layer framework, the ligands of bib and bdc link Co ions to generate a 2-D layer structure, which is further pillared by the bib, giving the final 3-D pillared-layer networks. The void in 1 induces the three-fold interpenetrating structure. Complex 2 features three-fold interpenetrating 3-D architecture, bdc and bibp both adopt a bidentate bridging coordination to link Co ions to afford right-and left-handed helical chains; these helices fuse together and form the 3-D framework. © 2014 Taylor & Francis.

Wang K.,Anshan Normal University | Gao E.,Shenyang University of Chemical Technology
Anti-Cancer Agents in Medicinal Chemistry | Year: 2014

In the search for new metal-based anticancer agents as effective candidates for cisplatin, a lot of strategies such as synthesis of cisplatin analogs, trans-platinum compounds and non-platinum metal complexes have been put forward in the last forty years. The concept of multinuclearity for improving the chemotherapeutic activity has been proven in multinuclear platinum complexes such as BBR3464, recently, the effective approach has been successfully transferred to ruthenium complexes. In this review, we highlighted the recent progress in multinuclear platinum complexes and ruthenium complexes as anticancer agents, and their novel DNA binding properties such as phosphate clamps, long range DNA cross links, bisintercalation, interduplex cross links and DNA-protein cross-links were summarized to shed light on the rational design of polynuclear complexes as anticancer agents. © 2014 Bentham Science Publishers.

Tong Y.P.,Shenyang University of Chemical Technology
Applied Mechanics and Materials | Year: 2013

This paper explores the explicitation strategy (one of the translation universals) in the political text.We adopte the quantitative and qualitative methods in the present study with the help of the self-compiled corpus to detect if the explicitation strategie of personal pronouns is prominent in the Selected Works of Deng Xiaoping, Volume III (1982-1992).It is found that the percentage of the personal pronouns were added or explicated purposely all come to allmost 31% compared with the total number of 5024 aligned sentences in the corpus. © (2013) Trans Tech Publications, Switzerland.

Li Y.,Shenyang University of Chemical Technology | Zhang X.,Shenyang University of Chemical Technology
Chemometrics and Intelligent Laboratory Systems | Year: 2014

In the semiconductor industry, traditional multivariate statistical process monitoring methods and pattern classification based detection methods have been developed to detect the semiconductor process faults. However, they do not show superior performance due to the limits of these methods and the unique characteristics of semiconductor processes such as non-linearity and multimodal batch trajectories. This paper presents a novel diffusion maps based k-nearest-neighbor rule (DM-kNN) technique that can reduce data-storage costs and enhance the performance of fault detection by integrating diffusion maps analysis with k-nearest-neighbor rule. DM-kNN takes full advantage of the dimensionality reduction and information preserving properties of DM to extract the low dimensional manifold feature that optimally preserves the intrinsic nonlinear structure of the data set. Then the adapted kNN rule based fault detection method is applied to the low dimensional manifold feature space to detect potential faults. The effectiveness and robustness of DM for dimensionality reduction and feature extraction are verified in simulation experiments compared with other linear and nonlinear dimensionality reduction methods. In addition, DM-kNN is applied to monitor the semiconductor manufacturing process. The fault detection results of the proposed method are demonstrated to be superior to those of the MPCA, FD-kNN, PC-kNN and FS-kNN approaches. © 2014 Elsevier B.V.

Fan L.,Shenyang University of Chemical Technology
Applied Mechanics and Materials | Year: 2012

Proton exchange membrane fuel cells have been receiving more and more attention these recent years. It is expected to improve the output power of the fuel cell, so it is important to understand what are the relevant factors affecting the output power. Simulation can provide valuable insight and guidance for design, performance optimization, and cost reduction of fuel cells. Some factors which affect the generated output of proton exchange membrane fuel cell are study in this paper, and simulation results are shown and analyzed. It helps to understand the mechanism of the fuel cell and lay a good foundation for improving the output power.

Bai D.,Shenyang University of Chemical Technology | Ren T.,Northeastern University China
Engineering Optimization | Year: 2013

This article addresses the flow shop scheduling problem to minimize the sum of the completion times. On the basis of the properties in job sequencing, the triangular shortest processing time (TSPT) first and dynamic triangular shortest processing time first heuristics are designed to solve the static and dynamic versions of this problem, respectively. Moreover, an improvement scheme is provided for these heuristics to enhance the quality of the original solutions. For further numerical evaluation of the heuristics, two new lower bounds with performance guarantees are presented for the two versions of the problem. At the end of the article, a series of numerical experiments is conducted to demonstrate the effectiveness of the algorithms. © 2013 Taylor & Francis Group, LLC.

Liu J.,Shenyang University of Chemical Technology
Applied Mechanics and Materials | Year: 2012

The process of PVC polymerization is nonlinear and time-delayed. It is very difficult to establish an exact mathematical model. Based on the analysis of the conventional PID controller's limitation, the fuzzy PID control system of PVC polymerization is introduced. A new kind of fuzzy PID controller is designed and the three parameters of PID can be self-tuned on-line. The simulation result proves that fuzzy PID controller is better than common PID controller. © (2012) Trans Tech Publications.

Zhang Y.,Shenyang University of Chemical Technology | Chen K.,Shenyang University of Chemical Technology
Inorganic Chemistry Communications | Year: 2013

Two new Cd(II) coordination polymers, namely [Cd3(Hdatrz) 2(L1)3(H2O)2]n· 2n(H2O) (1) and [Cd2(Hdatrz)(L2)2]n (2) (HL1 = benzoic acid, H2L2 = iminodiacetic acid, Hdatrz = 3,5-diamino-1,2,4-triazole), have been synthesized by combining the mixed ligands of HL1/H2L2 and Hdatrz with Cd(II) salts under hydrothermal conditions. Single-crystal X-ray diffraction analysis reveals that the structure of 1 features a two-dimensional (2D) layer structure based on Cd(II)-Hdatrz layer and the structure of 2 features a three-dimensional (3D) pillar-layered framework based on Cd(II)-L2 layer and Hdatrz pillars. Moreover, luminescent properties of compounds 1-2 have been also investigated in the solid-state at room temperature. © 2013 Elsevier B.V.

Bao R.,Shenyang University of Chemical Technology
Applied Mechanics and Materials | Year: 2012

The cantilever fluid conveying pipe which restrained by linear spring and cubic nonlinear spring at its free end was studied. Firstly, the model reference adaptive control system with parallel structural style was designed for the restrained cantilever pipe based on Lyapunov theory of stability. Then the vibration of the pipe system was under positive controlled making use of this adaptive control scheme. Lastly, the numerical simulating method was used to verify the effectivity of this control method and the influence of system parameters on control performance and control input energy were also investigated. The simulation results showed that the control effect of the control system was extremely distinct. In addition, the larger the Lyapunov function state feedback declinational gains were, the better the control effect had, and the shorter the required time that the controlled system entirely settled down needed. With the position of piezoelectric actuator moved to the pipe free end the required time that the controller entirely settled down would become longer and longer. Moreover, the effect of the length of piezoelectric actuator on the controlled system was relatively complicated, the required time that fluid conveying pipe system settled down and the control energy took on complicated variation regularities. © (2012) Trans Tech Publications.

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