Liaoning, China
Liaoning, China

Anshan Normal University is a university in the city of Anshan, in Liaoning province, China. It is under the provincial government. The school was founded in 1958 as a teacher training centre but suspended all operations in 1962 at the dawn of the Chinese Cultural Revolution before it was restarted again in 1978. The campus covers an area of 731,600 square meters. There is a teaching staff of 1207 over various levels from Professor down to post graduate teachers. Wikipedia.


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Dong S.,Tianjin Normal University | Zhao H.,Tianjin Normal University | Zhao H.,Anshan Normal University
Applied Physics Letters | Year: 2011

Magnetic properties of sp -electron half-metallic ferromagnets (HMFs) MC (M=Ca, Sr, and Ba) in rocksalt structure at ambient and elevated pressure have been investigated using first-principles within the generalized gradient approximation in the scheme of Perdew [Phys. Rev. Lett. 77, 3865 (1996)]. Magnetic moments, lattice constants, and total energies are calculated as a function of external pressure. The calculations predict the occurrence of pressure-induced magnetic phase transitions and find that the main reason for the magnetic transitions of sp -electron HMFs is the band widening of anion p states. © 2011 American Institute of Physics.


Zhu Y.,Anshan Normal University | Zhang B.,CAS Shenyang Institute of Metal Research | Liu X.,CAS Dalian Institute of Chemical Physics | Wang D.-W.,University of New South Wales | Su D.S.,CAS Shenyang Institute of Metal Research
Angewandte Chemie - International Edition | Year: 2014

Non-precious Fe/N co-modified carbon electrocatalysts have attracted great attention due to their high activity and stability in oxygen reduction reaction (ORR). Compared to iron-free N-doped carbon electrocatalysts, Fe/N-modified electrocatalysts show four-electron selectivity with better activity in acid electrolytes. This is believed relevant to the unique Fe-N complexes, however, the Fe-N structure remains unknown. We used o,m,p-phenylenediamine as nitrogen precursors to tailor the Fe-N structures in heterogeneous electrocatalysts which contain FeS and Fe3C phases. The electrocatalysts have been operated for 5000 cycles with a small 39 mV shift in half-wave potential. By combining advanced electron microscopy and Mössbauer spectroscopy, we have identified the electrocatalytically active Fe-N6 complexes (FeN6, [FeIII(porphyrin)(pyridine)2]). We expect the understanding of the FeN6 structure will pave the way towards new advanced Fe-N based electrocatalysts. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Zhu Y.,CAS Shenyang Institute of Metal Research | Zhu Y.,Anshan Normal University | Zhang B.,CAS Shenyang Institute of Metal Research | Liu X.,CAS Dalian Institute of Chemical Physics | And 2 more authors.
Angewandte Chemie - International Edition | Year: 2015

Non-precious Fe/N co-modified carbon electrocatalysts have attracted great attention due to their high activity and stability in oxygen reduction reaction (ORR). Compared to iron-free N-doped carbon electrocatalysts, Fe/N-modified electrocatalysts show four-electron selectivity with better activity in acid electrolytes. This is believed relevant to the unique Fe-N complexes, however, the Fe-N structure remains unknown. We used o,m,p-phenylenediamine as nitrogen precursors to tailor the Fe-N structures in heterogeneous electrocatalysts which contain FeS and Fe3C phases. The electrocatalysts have been operated for 5000 cycles with a small 39 mV shift in half-wave potential. By combining advanced electron microscopy and Mössbauer spectroscopy, we have identified the electrocatalytically active Fe-N6 complexes (FeN6, [FeIII(porphyrin)(pyridine)2]). We expect the understanding of the FeN6 structure will pave the way towards new advanced Fe-N based electrocatalysts. The active FeNx sites in Fe/N/C catalysts were identified by electron microscopy and Mössbauer spectroscopy as the six-coordinate FeIII species [FeIII(porphyrin)(pyridine)2]. The results lead the way to target-specific synthesis of highly active and stable non-precious metal catalysts for oxygen reduction reaction. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Liu B.,Anshan Normal University | Duan Y.,Fushun Sifang Senior High School | Luan S.,Liaoning Normal University
Nonlinear Analysis: Real World Applications | Year: 2012

In a polluted environment, considering the biological population infected with some kinds of diseases and hunted by human beings, we formulate two SI pollution-epidemic models with continuous and impulsive external effects, respectively, and investigate the dynamics of such systems. We assume that only the susceptible population is hunted by human beings. For the continuous system, we obtain sufficient conditions of the ultimate boundedness of solutions and the global asymptotical stability of equilibria. For the impulsive system, by using the comparison theorem and the analysis method, we show that under different conditions the disease-free periodic solution is globally asymptotically attractive, or the system is permanent. Numerical simulations confirm our theoretical results. © 2011 Elsevier Ltd. All rights reserved.


Mao Z.,CAS Dalian Institute of Chemical Physics | Huang F.,CAS Dalian Institute of Chemical Physics | Yu H.,Anshan Normal University | Chen J.,CAS Dalian Institute of Chemical Physics | And 3 more authors.
Chemistry - A European Journal | Year: 2014

The functionalization of internal olefins has been a challenging task in organic synthesis. Efficient CuII-catalyzed trifluoromethylation of internal olefins, that is, α-oxoketene dithioacetals, has been achieved by using Cu(OH)2 as a catalyst and TMSCF3 as a trifluoromethylating reagent. The push-pull effect from the polarized olefin substrates facilitates the internal olefinic C-H trifluoromethylation. Cyclic and acyclic dithioalkyl α-oxoketene acetals were used as the substrates and various substituents were tolerated. The internal olefinic C-H bond cleavage was not involved in the rate-determining step, and a mechanism that involves radicals is proposed based on a TEMPO-quenching experiment of the trifluoromethylation reaction. Further derivatization of the resultant CF 3 olefins led to multifunctionalized tetrasubstituted CF3 olefins and trifluoromethylated N-heterocycles. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


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.


Zhao X.-H.,Anshan Normal University
Chinese Control Conference, CCC | Year: 2015

Teaching-learning-based optimization (TLBO) is a new population-based meta-heuristic algorithm. In this paper, a new variant of TLBO-Improved Teaching-Learning-based optimization (ITLBO) is developed for solving global optimization problems. The proposed ITLBO incorporates the position updating operation of swarm intelligent algorithm into different phases and aims at effectively balancing the local and global searching. Gaussian perturbation strategy is presented to prevent TLBO algorithm from trapping into local minima. Moreover, opposition-based learning technique is employed in learning phase to expand the exploration space. Experimental results reveal that ITLBO appear to enhance the solution accuracy and quality compared to TLBO and other promising heuristic methods. © 2015 Technical Committee on Control Theory, Chinese Association of Automation.


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.


Using α-oxo-ketene dithioacetals 1a as odorless thiol equivlents, an efficient and odorless transthioacetalization of acetals 2 has been developed. In the presence of MeCOCl in MeOH, the cleavage of 1a commences to generate thiols at both room and reflux temperatures, and the generated thiols then react with acetals 2 to give correspecting thioacetals 3 in good yield. This transthioacetalization is characterized by mild reaction conditions, simple procedure, good yields, and perfect chemoselectivity. It is noteworthy that only a very faint odor of thiols can be perceived during both the reaction and workup. © 2013 Taylor and Francis Group, LLC.


Using 2-[bis(alkylthio)methylene]-3-oxo-N-o-tolylbutanamides 1 as odorless thiol equivalents, an efficient and odorless synthesis of thioethers has been developed. Promoted by NaOH in EtOH, the cleavage of 1 commences to generate thiolate anions, and the generated thiolate anions then react with halides to give various thioethers in good yield. It is noteworthy that only a very faint odor of thiols can be perceived during both the reaction and the workup. Using 2-[bis(alkylthio)methylene]-3-oxo-N-o-tolylbutanamides as odorless thiol equivalents, an efficient and odorless synthesis of thioethers has been developed. Promoted by NaOH in EtOH, the cleavage of 2-[bis(alkylthio)methylene] -3-oxo-N-o-tolylbutanamides commences to generate thiolate anions, and the generated thiolate anions then react with halides to give various thioethers in good yield. Copyright © 2012 SIOC, CAS, Shanghai & WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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