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Analytical Results of Eigenstates and Eigenenergies for a Classical Model of Many Bosonic Modes Mixing

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Communications in Theoretical Physics 2004年第5X期42卷 689-692页

作者： YANGWen-Xing LIJia-Hua ZHANZhi-Ming jinli-Xia DepartmentofPhysics HuazhongUniversityofScienceandTechnologyWuhan430074China StateKeyLaboratoryofLaserTechnology HuazhongUniversityofScienceandTechnologyWuhan430074China

The. Analytical expressions of eigenstates and eigenenergies are demonstrated using a parameter λ without the assumption of Bethe anstz for two kinds of N-mode mixing models. The parameter is shown to be determined by the roots of a simple polynomial and is solvable analytically or numerically. In addition, the exact analytical expressions of eigenstates and eigenenergies are illustrated without any unknown parameter.

关键词：本征能量本征状态多混合模型非线性过程能量光谱

Ethanol steam reforming over Ni-Cu/Al_2O_3-M_yO_z (M = Si, La, Mg,and Zn) catalysts

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Journal of Natural Gas Chemistry 2009年第1期18卷 55-65页

作者： Lifeng Zhang Jie Liu Wei Li Cuili Guo jinli Zhang School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

Ni-based catalysts doped with copper additives were studied on their role in ethanol steam reforming reaction. The effects of Cu content, support species involving Al2O3-SIO2, Al2O3-MgO, Al2O3-ZnO, and Al2O3-La2O3, on the catalytic performance were studied. Characterizations by TPR, XRD, NH3-TPD, XPS, and TGA indicated that catalysts 30Ni5Cu/Al2O3-MgO and 30Ni5Cu/Al2O3-ZnO have much higher H2 selectivity than 30Ni5Cu/Al2O3-SiO2, as well as good coke resistance. H2 selectivity for 30Ni5Cu/Al2O3-MgO catalyst was 73.3% at 450 ℃ and increased to 94.0% at 600℃, whereas for 30Ni5Cu/Al2O3-ZnO catalyst, the H2 selectivity was 63.6% at 450 ℃ and 95.2% at 600℃. TheseAl2O3-MgO and Al2O3-ZnO supported Ni-Cu bimetallic catalysts may have important applications in the production of hydrogen by ethanol steam reforming reactions.

关键词： ethanol steam reforming nickel-copper-based catalyst Al2O3-SO2 support Al2O3-MgO support Al2O3-ZnO support Al2O3-La2O3 support

In-situ growth of CoNi bimetal anchored on carbon nanoparticle/nanotube hybrid for boosting rechargeable Zn-air battery

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Journal of Energy Chemistry 2022年第3期31卷 348-355,I0010页

作者： Jun Li Yongxia Wang Zhengyu Yin Rui He Yihao Wang jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Exploring highly efficient non-precious metal based catalysts for bifunctional oxygen electrode is crucial for rechargeable metal-air *** this study,with MOFs as precursors,a facile coprecipitation method is designed to realize in-situ growth of the CoNi anchored carbon nanoparticle/nanotube(CoNi/N-CNN)hybrid,which can achieve the simultaneous maximum exposure of both oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)active *** from the unique structure,the CoNi/N-CNN catalyst exhibits excellent electrocatalytic performance for ORR(E_(onset)=1.183 V,E_(1/2)=0.819 V)and a low operating voltage of 1.718 V at 10 mA cm^(−2)(Ej=10)for ***,the home-made rechargeable Zn-air battery with CoNi/N-CNN delivers a high discharge power density up to 209 mW cm^(−2),and an outstanding charge–discharge cycling *** boosted bifunctional electrocatalytic activity can be ascribed to the strong coupling effect between Co/Ni center sites and defect-rich N-anchored carbon featured with porous and nanotube structure,which can introduce uniformly dispersed active sites,tailored electronic configuration,superb conductivity and convenient charge transfer *** hybrid non-precious bimetal based electrocatalyst provides the possibility to develop the low-cost and high-efficient ORR/OER bifunctional electrocatalysts in rechargeable metal-air battery.

关键词： Co Ni/N-CNN Bifunctional electrocatalyst Oxygen electrode Rechargeable Zn-air battery

An SNP polymorphism (-844C/T) in the promoter of catalase gene leads to differ- ential expression

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Chinese Science Bulletin 2004年第16期49卷 1777-1778页

作者： LiYanping ZHANGXin WANGZhimin LUDaru HANGWei jinli StateKeyLabofGeneticEngineeringandCenterforAnthropologicalSciences SchoolofLifeScience.Shanghai200433China ChineseNationalHumanGenomeCenteratShanghai.Shanghai201203 China CenterforGenomeInformation DepartmentofEnvironmentalHealth.UniversityofCincinnatiCollegeofMedicine.OH45267USA

Imbalance of redox state has been associated with human diseases, such as cardiovascular diseases, Huntington's disease and Alzheimer's disease[1]. Catalase, an important antioxidant enzyme, decomposes H2O2 into O2and H2O, therefore limiting the deleterious effect of the reactive oxygen species (ROS)[1 -4]. Previous study showed that a C-T polymorphism, located at -844 bp from the translational start site of catalase, is strongly associated with essential hypertension in an isolated Chinese population of Xiangchang country, Anhui Province[5]. To explore the impact of SNP-844C/T on the expression of catalase, human catalase promoters containing either SNP-844C or T variant were subcloned into the pGL3-Basic luciferase vector.

关键词：多态性触酶基因差分表达 SNP-844C/T 细胞结构转染实验

Prediction of the geological indicators in TBM tunnel based on optimized proportion of surrounding rock grades

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Underground Space 2023年第4期11卷 204-217页

作者： Xiao Guo Wei Guo Jianqin Liu jinli Qiao Guisong Hu School of Mechanical Engineering Tianjin UniversityTianjin 300350China Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education Tianjin UniversityTianjin 300350China School of Civil and Transportation Engineering Hebei University of TechnologyTianjin 300401China

With tunnel boring machine being used in underground engineering,accurate geological indicators have been the important basis for tunnel boring machine(TBM)*** propagation neural network(BPNN)has been used to predict the geological indicators of tunnels in previous ***,these studies ignored the imbalance proportion of surrounding rock grades,leading to the indiscriminate use of data,thus affecting the predictive effect of *** order to prove the importance of the proportion of surround-ing rock grade in geological prediction,we mainly attempt to utilize particle swarm optimization(PSO)to optimize the proportion of sample data,and integrate with BPNN to establish a PSO-BPNN theoretical model to predict geological *** the same time,combined with the actual engineering data,5 tunneling indicators were selected as input and 4 geological indicators were selected as out-put by a variety of dimensionality reduction *** geological indicators are density,uniaxial compressive strength,internal fric-tion angle(u)and Poisson’s ratio(e).On this basis,the PSO-BPNN prediction model was established in *** comparing the prediction of traditional BPNN,PSO-BPNN and other optimization-integrated models,the result shows that optimized proportion of surrounding rock grades reduces the prediction error and improves the interpretability of the prediction ***,we com-bined the theory of surrounding rock partition to illustrate the rationality of surrounding rock proportion in PSO result,that is,the proportion of complex surrounding rock should be increased appropriately to improve the prediction ***,based on the optimization-integrated models with engineering data and the surrounding rock classification theory,the importance of proportion of surrounding rock grades for tunnel geological prediction is confirmed.

关键词： TBM BPNN Particle swarm optimization Prediction of geological indicators Sample imbalance

CFD–DEM simulation of particle deposition characteristics of pleated air filter media based on porous media model

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Particuology 2023年第1期72卷 37-48页

作者： Kaiwen Cheng Jingjing Zhu Fuping Qian Bowen Cao jinli Lu Yunlong Han School of Civil Engineering and Architecture Anhui University of TechnologyMa'anshan 243002China School of Energy and Environment Anhui University of TechnologyMa'anshan 243002China

In this study, the three-dimensional physical model of pleated air filtration media was simplified to porous media model, and the calculation parameters of porous media were obtained based on experimental data. The model of V-shaped pleated air filter media is constructed, the height of the media pleat is 50 mm and the pleat thickness is 4 mm, the pleat angle is 3.7°. The Hertz-Mindlin contact model was modified by Johnson Kendall Roberts (JKR) adhesion contact model. The deposition process of particles in media was simulated based on computational fluid dynamics (CFD) theory and discrete element method (DEM). Results show that the CFD–DEM coupling method can be effectively applied to the macro research of pleated air filter media. The particles will form dust layer and dendrite structure on the fiber surface, and the dust layer will affect the subsequent air flow organization, and the dendrite structure will eventually form a “particle wall”. The formation of the “particle wall” will prevent the particles from moving further in the fluid domain, which makes area of pleated angle become the “low efficiency” part about the particle deposition. Compared with area of pleated angle, the particles are concentrated in the opening area and the middle area of the pleated to agglomerate and deposit.

关键词： Pleated air filter media CFD-DEM Air distribution Deposition characteristics

A numerical study of mixing intensification for highly viscous fluids in multistage rotor-stator mixers

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Chinese Journal of Chemical Engineering 2022年第7期35卷 218-230页

作者： Liying Chen Junheng Guo Wenpeng Li Shuchun Zhao Wei Li jinli Zhang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Chemistry and Chemical Engineering Shihezi UniversityShihezi 832003China

How to achieve uniform mixing of highly viscous fluids with low energy consumption is a major industry demand and one of the hot spots of mixing research.A typical multistage rotor-stator mixer(MRSM)equipped with a distributor was investigated to disclose the effects on the mixing performance and power consumption for highly viscous fluids via numerical simulation,considering the influence factors associated with different geometric parameters of both MRSM and the *** mixing index and power consumption are used to evaluate the performance of the *** dimensionless correlations for the mixing index and the power consumption are established considering the factors including the flow rate,rotor speed,the number of mixing *** the optimized mixer with the distributor(X1-T1),the mixing index increases to 0.85(obviously higher than 0.46 for the mixer T1 without a distributor),meanwhile the corresponding power consumption is about 1/5 of that of T1 achieving the same mixing *** illustrates that the distributor can significantly improve the mixing of highly viscous fluids in the MRSM without the cost of large power *** results would provide a guidance on the design and optimization of multistage rotor-stator mixers in industrial applications.

关键词： Multistage rotor-stator mixer Computational fluid dynamics Mixing index Power consumption Distributor

Recent Advances on Metal-Organic Frameworks in the Conversion of Carbon Dioxide

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Chinese Journal of Chemistry 2021年第2期39卷 440-462页

作者： Xiongli Liu jinli Li Na Li Baiyan Li Xian-He Bu School of Materials Science and Engineering National Institute for Advanced MaterialsTKL of Metal and Molecule-Based Material ChemistryNankai UniversityTianjin300350 China College of Chemistry State Key Laboratory of Elemento-Organic ChemistryNankai UniversityTianjin300071 China

With the development of modern industry,global warming is becoming a challenging issue due to the emissions of large quantities of greenhouse gases,mainly carbon dioxide(CO_(2)).The conversion of CO_(2)to useful compounds is considered as an effective and economic way to solve such a climate ***-organic frameworks(MOFs)are an emerging class of porous crystalline materials that have shown great potential in the conversion of CO_(2).The advantages of MOFs in CO 2 conversion lie in their high surface areas,adjustable pore size,and high *** importantly,desirable functional sites can be easily designed and precisely installed to the pore wall of target MOFs by pre-assembly and/or post-synthetic modification(PSM)*** review summarizes the recent advances in constructing MOF catalysts for the application in CO_(2)*** believe that the design and synthesis of MOF catalysts for CO_(2)conversion can be a promising way to solve the“greenhouse effect”.

关键词： Metal-organic frameworks Catalysis Carbon dioxide fixation Fine chemicals Small-molecule compounds

The stable isotope geochemical characteristics of dissolved inorganic carbon in northern South China Sea

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Chinese Journal Of Geochemistry 2010年第3期29卷 287-292页

作者： LIU Qiming ZHANG jinli HUANG Zhiyong HUANG Ning School of Biotechnology Engineering Jimei University Xiamen 361021 China State Key Laboratory of Marine Environmental Science Xiamen University Xiarnen 361005 China

The isotopic composition of dissolved inorganic carbon (DIC) in marine and estuarine environments has been studied in some detail because of its role in determining the isotopic composition of inorganic/organic matter and its applications to the study of various natural processes. The δ13CDIC values of sea water are controlled by the sources and sinks of carbon and the results from isotope fractionation among solid, dissolved and gaseous phases. In this paper, based on the description of the stable isotope geochemical characteristics of dissolved inorganic carbon in northern South China Sea, the following conclusions were drawn: 1) the δ13CDIC values of natural waters are controlled by the sources and sinks of carbon and the results from isotope fractionation among solid, dissolved and gaseous phases. And the low seawater δ13CDIC values of northern South China Sea are accompanied by a low level of sea primary productivity in this region; 2) according to the parameter relationship (δ13CDIC-1.1 PO4) between δ13CDIC and PO4, it is indicated that northern South China Sea is the source of atmospheric CO2; and 3) nitrogen (N) and phosphorus (P) are the elements which are the basis for phytoplankton growth. Based on the analysis of seawater δ13CDIC values and PO4 and NO3+NO2 concentrations, our data show that N is a limiting nutrient in northern South China Sea.

关键词：同位素地球化学特征溶解无机碳南海北部 Sea 中国稳定二氧化氮浓度同位素组成