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Chemical Research in Chinese Universities 2012年第5期28卷 768-774页

作者： REN Dong-xue CAO Yun-zhu CHEN Chen XING Yong-heng College of Chemistry and Chemical Engineering Liaoning Normal UniversityDalian 116029R R.China

Two oxo-vanadium（IV） complexes, [VO（C2O4）（2,2′-bipy）（H2O）]·C2H5OH（1） and VO（C2O4）（phen）（H2O）（2）, where 2,2′-bipy=2,2′-bipyridyl, phen=1,10-phenanthroline, were synthesized as potential functional models of vanadium haloperoxidases（VHPOs） in mixed solvent of ethanol and water at room temperature. The complexes were characterized by elemental analysis, infrared（IR）, UV-Vis and X-ray crystallography. Structural analyses showed that vanadium atom was coordinated by a terminal oxygen, one oxygen atom from coordinated water, two oxygen atoms from the carboxylate group of oxalic acid, and two nitrogen atoms（N1 and N2） from 2,2′-bipy/phen. Central vanadium atoms in complexes 1 and 2 were both in a distorted-octahedral environment, and some intermolecular hydrogen bonding linkages were also observed in each complex. Bromination reaction activity of the two complexes was evaluated with phenol red as organic substrate in the presence of H2O2, Br-and phosphate buffer, indicating that they can be considered as a potential functional model of VHPO. In addition, thermal analysis was also performed and discussed in detail.

关键词： Oxo-vanadium complex Bromination reaction activity Vanadium haloperoxidase

MICRO TOUCH SENSOR USING PIEZOELECTRIC THIN FILM FOR MINIMAL ACCESS SURGERY

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Chinese Journal of Mechanical Engineering 2005年第1期18卷 87-91页

作者： DuLiqun ZhaoHaibo FukudaToshio AraiFumihito KeyLaboratoryforPrecisionandNon-traditionalMachiningTechnologyofMinistryofeducation DalianUniversityofTechnologyDalian116024China DepartmentofMicroSystemEngineering NagoyaUniversityNagoya464-0814Japan

The micro touch sensor which is designed to be used in the blood vessels isproposed. Using this touch sensor, the risk of injuring blood vessels can be reduced. A prototype ofmicro touch sensor using PZT (lead zirconate titanate) thin film synthesized by hydrothermal methodis made. The basic properties of the micro touch sensor are studied. In order to analyse theproperties of the micro touch sensor, a mathematical model is set up.

关键词： Touch sensor PZT thin film Hydrothermal method Catheter

Potential of ginsenoside Rh_(2)and its derivatives as anti-cancer agents

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Chinese Journal of Natural Medicines 2022年第12期20卷 881-901页

作者： LI Keke LI Zhongyu Men Lei LI Wei GONG Xiaojie Key Laboratory of Biotechnology and Bioresources Utilization Ministry of EducationDalian Minzu UniversityDalian 116600China College of Chinese Medicinal Materials Jilin Agricultural UniversityChangchun 130118China

As a steroid skeleton-based saponin,ginsenoside Rh_(2)(G-Rh_(2))is one of the major bioactive ginsenosides from the plants of genus Panax *** studies have reported the notable pharmacological activities of G-Rh_(2)such as anticancer,antiinflammatory,antiviral,antiallergic,antidiabetic,and anti-Alzheimer’s *** preclinical studies have demonstrated the great potential of G-Rh_(2)in the treatment of a wide range of carcinomatous diseases in vitro and in vivo.G-Rh_(2)is able to inhibit proliferation,induce apoptosis and cell cycle arrest,retard metastasis,promote differentiation,enhance chemotherapy and reverse multi-drug resistance against multiple tumor *** present review mainly summarizes the anticancer effects and related mechanisms of G-Rh_(2)in various models as well as the recent advances in G-Rh_(2)delivery systems and structural modification to ameliorate its anticancer activity and pharmacokinetics characteristics.

关键词： Ginsenoside Rh_(2) Anticancer Mechanisms of action Synergistic effect Drug delivery systems

FABRICATION OF PIEZOELECTRIC BIMORPH USING LEAD ZIRCONATE TITANATE THIN FILM DEPOSITED BY HYDROTHERMAL METHOD

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Chinese Journal of Mechanical Engineering 2007年第6期20卷 5-8页

作者： DU Liqun Lü Yan DONG Weijie GAO Xiaoguang Key Laboratory for Precision ＆ Nontraditional Machining Technology of Ministry of education Dalian University of Technology Dalian 116023 China School of Electronic and Information Engineering Dalian University of Technology Dalian 116023 China Key Laboratory for Micro/Nano Technology and System Dalian University of Technology Dalian 116023 China

In order to describe the characteristics of piezoelectric bimorph, properties of lead zirconate titanate （LZT） film are studied by X-ray diffraction （XRD） and scanning eletron microscope （SEM）. The ratio of PbTiOJPbZrO3 in LZT is 53/47, which is around morphotropic phase boundary （MPB）. LZT film is composed of cubic particles with the average size of 5 ~ma. Density of thin film is figured out through the datum measured in experiments. The displacement model used to analyze the driving ability of bimorph is set up, and the effect of elastic intermediate layer is taken into account. Piezoelectric coefficient of LZT film is worked out by using the displacement model. Experiments of driving ability show that deformation of bimorph free end does not increase with times of crystal growth processes and the maximum deformation is obtained after two times crystal growth processes. Finally, the ferroelectric property of the bimorph is investigated and coercive voltage of the bimorph is obtained.

关键词： Piezoelectric bimorph Lead zirconate titanate (LZT) film Hydrothermal method

Rapid Evaluation of Individual Hydrogen Bonding Energies in Linear Water Chains

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Chemical Research in Chinese Universities 2014年第3期30卷 447-454页

作者： HAO Jiaojiao LI Shushi JIANG Xiaonan HUANG Cuiying WANG Changsheng School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China

A model is proposed to rapidly evaluate the individual hydrogen bonding energies in linear water chains. We regarded the two O--H bonds of a water molecule as two dipoles. The magnitude of the O--H bond dipole mo- ment can be varied due to the other water molecules＇ presence. An analytic potential energy function, which explicitly contains the permanent dipole-dipole interactions, the polarization interactions, the van der Waals interactions and the covalent interactions, was therefore established. The individual hydrogen bonding energies in a series of linear water chains were evaluated via the analytic potential energy function and compared with those obtained from the CP-corrected MP2/aug-cc-pVTZ calculations. The results show that the analytic potential energy function not only can produce the individual hydrogen bonding energies as accurately as the CP-corrected MP2/aug-cc-pVTZ method, but is very efficient as well, demonstrating the model proposed is reasonable and useful. Based on the individual hy- drogen bonding energies obtained, the hydrogen bonding cooperativity in the linear water chains was explored and the natures of the hydrogen bonding in these water chains were discussed.

关键词： Hydrogen bond Dipole-dipole interaction Polarization Covalency Water chain Cooperativity

Progress and trends in hydrate based desalination(HBD) technology:A review

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Chinese Journal of Chemical Engineering 2019年第9期27卷 2037-2043页

作者： Jianan Zheng Fanbao Cheng Yuanping Li Xin Lü Mingjun Yang Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of education Dalian University of TechnologyDalian 116024China Institute of Science and Technology Shenzhen BranchChina National Offshore Oil CorporationGuangzhou 510420China CNOOC Research Institute Co.Ltd. Beijing 100027China

The shortage of freshwater boosts the development of seawater desalination technology. As a novel method, the hydrate based desalination technology has been put forward for decades and achieved considerable development in the past years. This review focuses on the experimental progress at the aspects of the hydrate former choice, formation promotion and ion removal efficiency and conceptive innovation of hydrate separation and energy utilization. It should be noted that gaseous hydrate former with low formation pressure and insoluble liquid hydrate former are worthy for further study. Besides, the water migration caused by propane deserves to be investigated much more deeply for the potential value of wide application. Moreover, the utilization proposal of LNG cold energy brings more possibility of commercial application. In a word, the hydrate based desalination technology is hopefully an environment friendly, low-cost and widely used desalination technology in the near future.

关键词： Gas hydrate Desalination Separation Phase equilibria Hydrocarbons Mixture

Effect of length-width ratio of rounded rectangle aquaculture tank in dual-diagonal-inlet layout on hydrodynamics

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Journal of Oceanology and Limnology 2024年第5期42卷 1695-1709页

作者： Meng LI Xiaozhong REN Shupeng DU Wei SUN Chenxu ZHAO Hangfei LIU Xianying SHI Key Laboratory of Environment Controlled Aquaculture(dalian Ocean University) Ministry of EducationDalian 116023China College of Biosystems Engineering and Food Science(BEFS) Zhejiang UniversityHangzhou 310058China College of Ocean and Civil Engineering Dalian Ocean UniversityDalian 116023China

To adapt to the change of aquaculture workshop site,optimize the shape of aquaculture tanks and improve the utilization rate of breeding space,it is necessary to determine the appropriate length width ratio parameters of aquaculture *** this paper,computational fluid dynamics(CFD)technology is adopted to study the flow field performance of aquaculture tanks with different L/B ratios(L:the length;B:the width,of aquaculture tank)and different jet direction conditions(lengthways jet and widthways jet).A three-dimensional numerical calculation model of turbulence in rounded rectangle aquaculture tanks in dual-diagonal-inlet layout was *** directions are arranged lengthways and widthways,and the water flow velocity,resistance coefficient change,vorticity,*** analyzed under two working *** show that the flow field performance in aquaculture tank decreases with the increase of the L/B *** flow field performed well when L/B was 1.0-1.3,sharply dropped at 1.4-1.6,and poor at *** results provided a theoretical basis for the design and optimization in flow field performance of the industrialized circulating aquaculture tanks.

关键词： aquaculture tank length-width ratio computational fluid dynamic hydrodynamic

Numerical simulation of inlet placement on sewage characteristics in the rounded square aquaculture tank with single inlet

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Journal of Oceanology and Limnology 2024年第4期42卷 1359-1382页

作者： Xiaozhong REN Yixuan HU Yinxin ZHOU Shupeng DU Wei SUN Hangfei LIU Chenxu ZHAO Ying LIU Key Laboratory of Environment Controlled Aquaculture(dalian Ocean University)Ministry of education Dalian 116023China College of Marine Science and Environment Dalian Ocean UniversityDalian 116023China College of Ocean and Civil Engineering Dalian Ocean UniversityDalian 116023China Zhejiang University Hangzhou 310058China

To improve the self-cleaning ability of aquaculture tank and the efficiency of circulating water,physical and numerical experiments were conducted on the influence of inlet structure on sewage discharge in a rounded square aquaculture tank with a single *** on the physical model of the tank,analysis of how inlet structure adjustment affects sewage discharge efficiency and flow field characteristics was conducted to provide suitable flow field conditions for sinkable solid particle *** addition,an internal flow field simulation was conducted using the RNG k-εturbulence model in hydraulic drive *** a solid-fluid multiphase model was created to investigate how the inlet structure affects sewage collection in the rounded square aquaculture tank with single inlet and *** finding revealed that the impact of inlet structure is considerably affecting sewage *** conditions of C/B=0.07-0.11(the ratio of horizontal distance between the center of the inlet pipe and the tank wall(C)to length of the tank(B))andα=25°(αis the angle between the direction of the jet and the tangential direction of the arc angle)resulted in optimal sewage collection,which is similar to the flow field experiment in the rounded square aquaculture tank with single inlet and *** excellent correlation was revealed between sewage collection and fluid circulation stability in the aquaculture *** present study provided a reference for design and optimization of circulating aquaculture tanks in aquaculture industry.

关键词： rounded square aquaculture tank sewage collection characteristic inlet structure computational fluid dynamic

Porousβ-FeOOH nanotube stabilizing Au single atom for highefficiency nitrogen fixation

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Nano Research 2022年第4期15卷 3026-3033页

作者： Hao Sun Hua-Qing Yin Wenxiong Shi Lu-Lu Yang Xiang-Wei Guo Hong Lin Jiangwei Zhang Tong-Bu Lu Zhi-Ming Zhang Institute for New Energy Materials&Low Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China dalian National Laboratory for Clean Energy&State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences(CAS)Dalian 116023China

Electrochemical nitrogen reduction reaction(NRR)under ambient conditions is highly desirable to achieve sustainable ammonia(NH3)production via an alternative carbon free ***-atom catalysts(SACs)with super high atomic utilization and catalytic efficiency exhibit great potential for ***,a high-performance NRR SAC is facilely prepared via a simple deposition method to anchor Au single atoms onto porousβ-FeOOH *** resulting Au-SA/FeOOH can efficiently drive NRR under ambient conditions,and the NH3 yield reaches as high as 2,860μg·h^(-1)·mg_(Au)^(-1)at-0.4 V *** hydrogen electrode(RHE)with 14.2%faradaic efficiency,much superior to those of all the reported Au-based *** investigations demonstrate that the synergy of much enhanced N_(2)adsorption,directional electron export,and mass transfer ability in Au-SA/FeOOH greatly contributes to the superior NRR *** work highlights a new insight into the design of high efficient NRR electrocatalysts by combination of porous metal oxide matrix and highly active single-atom sites.

关键词： dinitrogen(N_(2))reduction electrocatalysis single atom porous iron oxyhydroxide

Bimetallic Pt–Ru covalently bonded on carbon nanotubes for efficient methanol oxidation

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International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1816-1823页

作者： Ting Zhang Wanzong Wang Zheng Ma Lei Bai Yue Yao Dongqing Xu School of Chemistry and Material Engineering Anhui Science and Technology UniversityFengyang 233100China School of Life and Health Science Anhui Science and Technology UniversityFengyang 233100China

Platinum-based nanocomposites have been considered as one of the most promising catalysts for methanol oxidation reactions(MORs), which yet still suffer from low electrochemical activity and electron-transfer properties. Apart from van-der-Waals heterostructures,herein, we report a novel nanocomposite with the structure of Pt–Ru bimetallic nanoparticles covalently-bonded onto multi-walled carbon nanotubes (MWCNTs)(Pt–Ru@MWCNT), which have been successfully fabricated via a facile and green synthesis method. It is demonstrated that the Pt–Ru@MWCNT nanocomposite possesses much enhanced electrocatalytic activity with the electrochemical active surface area(ECSA) of 110.4 m^(2)·g^(-1)for Pt towards MOR, which is 2.67 and 4.0 times higher than those of 20wt%commercial Pt@C and Pt-based nanocomposite prepared by other method, due to the improved electron-transfer properties originated from M–O–C covalent bonds. This work provides us a new strategy for the structural design of highly-efficient electrocatalysts in boosting MOR performance.

关键词： bimetallic Pt-Ru nanocomposite high loaded functionalized multi-walled carbon nanotubes methanol oxidation green hydrothermal synthesis