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China Foundry 2020年第3期17卷 190-197页

作者： Lei Luo liang-shun Luo zhi-ping li Hong-ying Xia Yan-qing Su liang Wang Jing-jie Guo Heng-zhi Fu School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Microstructural improvement of Al-Cu-li alloys with high li content plays a critical role for the acquisition of excellent mechanical properties and ultra-low *** this regard,the Al-Cu-li alloy castings with high li content from 1.5 wt.%to 4.5 wt.%were prepared by near-rapid solidification,followed by two-stage homogenization treatment(490℃/16 h and 530℃/16 h).The microstructural evolution and solidification behavior of the as-cast and homogenized alloys with different li contents were systematically studied by combining experiments with calculations by Pandat *** results indicate that with the increase of li content,the grain sizes decrease,the solution ability of Cu in the matrixα-Al phase increases,while the content of secondary dendrites increases and the precipitated phases change from low melting point phases to high melting point phases under the near-rapid ***,by the coupling of near-rapid solidification and two-stage homogenization,the metastable precipitated phases(Al7Cu4li and AlCu3)can be dissolved effectively in the alloys with li content of 1.5 wt.%-2.5 wt.%;moreover,the stable precipitated phases(Al6Culi3 and Al2Culi)uniformly distribute at the grain boundaries in the alloys with li content of 3.5 wt.%-4.5 wt.%.As a result,the refined and homogenized microstructure can be obtained.

关键词： Al-Cu-li alloys ultra-low density near-rapid solidification two-stage homogenization treatment microstructural evolution

S1280 and S1284: Two Oscillating Blue Stragglers in the Open Cluster M67

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Chinese Journal of Astronomy and Astrophysics 2005年第6期5卷 579-586页

作者： Xiao-Bin Zhang Rong-Xian Zhang zhi-ping li National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

We present results of a time-series CCD photometry of two blue stragglers in the open cluster M67 that are also oscillating variables, S1280 and S1284. The observations obtained on 11 nights confirmed the δ Scuti-like variability of the two stars. Four and five main pulsating frequencies are detected for S1280 and S1284, respectively, through a power spectral analysis. A preliminary mode identification indicates that the two stars are both in radial oscillation. Based on the nature of oscillation, the physical parameters of the two stars are determined, and their evolutionary status discussed.

关键词： blue straggler - open cluster individual (M67) - stars oscillation - stars individual (S1280, S1284)

Characterization of the generalized permeability jail in tight reservoirs by analyzing relative-permeability curves and numerical simulation

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Petroleum Science 2023年第5期20卷 2939-2950页

作者： Feng-Peng Lai zhi-ping li He-Xin Wei Wei Zhang School of Energy Resources China University of GeosciencesBeijing100083China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering Beijing100083China Changchun Oil Production Plant of Jilin Oilfield PetroChinaChangchun130062JilinChina Changqing Oilfield Company PetroChinaXi'an710018ShaanxiChina

This study comprehensively characterizes the boundary values of generalized permeability jail in tight reservoirs through relative-permeability curve analysis,numerical simulation,and economic evaluation.A total number of 108 relative-permeability curves of rock samples from tight reservoirs were obtained,and the characteristics of relative-permeability curves were *** irreducible water saturation(Swi)mainly ranges from 20% to 70%,and the residual gas saturation(Sgr)ranges from 5% to 15% for 55% of the *** relative-permeability curves are categorized into six types(Category-Ⅰ to Ⅵ)by analyzing the following characteristics:The relative permeability of gas at Swi,the relative permeability of water at Sgr,and the relative permeability corresponding to the isotonic *** relative permeability curves were normalized to facilitate numerical simulation and evaluate the impact of different types of curves on production *** results of simulation show significant difference in production performance for different types of relative-permeability curves:Category-Ⅰ corresponds to the case with best well performance,whereas Categories-Ⅴ and Ⅵ correspond to the cases with least production *** results of economic evaluation show a generalized permeability jail for Categories-Ⅳ,Ⅴ,and Ⅵ,and the permeability jail develops when the relative permeability of gas and water is below *** study further quantifies the range of micro-pore parameters corresponding to the generalized permeability jail for a tight sandstone reservoir.

关键词： Generalized permeability jail Characterization Relative permeability curve Numerical simulation Pore structure

On the Red Edge of the δ Scuti Instability Strip

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Chinese Journal of Astronomy and Astrophysics 2002年第5期2卷 441-448页

作者： Yan Xu zhi-ping li li-Cai Deng Da-Run Xiong National Astronomical Observatories Chinese Academy of SciencesBeijing 100012 Department of Physics Tianjin Normal UniversityTianjin 300073 Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008

The δ Scuti star catalogue is used to derive the observational locations of such stars on the HR diagram. The theoretical and observational instability strips are compared to check the theoretical red edge obtained by considering nonlocal time-dependent convection theory. The observational instability strip almost overlaps with the theoretical one, but the observed blue and red envelopes are hotter than the theoretical edges. The distribution of δ Scuti stars in the pulsation strip is not uniform.

关键词： stars: variables: δ Sct - stars: oscillations ?stars: HR diagram

Poly(ethylene oxide) Solubilization in Reverse Microemulsion:Conductivity and UV-Vis Spectra Studies

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Chinese Chemical Letters 2000年第8期11卷 735-738页

作者： Zhen Shan HOU zhi ping li Han Qing WANG Xinjiang Institute of Chemistry The Chinese Academy of sciencesUrumqi 830011 Lanzhou Institute of Chemical Physics The Chinese Academy of sciencesLanzhou730000

The effect of poly (ethylene oxide) (PEO) on the w/o microemulsion is studied. The addition of PEO induces a decrease of attractive interaction between droplets in reverse microemulsion. Due to the absence of interaction between cationic surfactant and neutral polymer, the polymer molecules are forced into the interior of water core, avoiding the interfacial region.

关键词： reverse microemulsion cationic surfactant electrical percalation PEO

Synthesis,Characterization and Antibacterial Activity of New 5-Aryl Pyrazole Oxime Ester Derivatives

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Chemical Research in Chinese Universities 2008年第4期24卷 454-458页

作者： liU Xin-hua zhi li-ping SONG Bao-an XU Hong-li Key Laboratory of Anhui Educational Department Faculty of Mathematics ＆ Physics Anhui University of Technology Ma ＇anshan 243002 P R. China Key Laboratory of Green Pesticide and Agriculture Bioengineering Ministry of Education Guizhou University Guiyang 550025 P. R. China

Eleven new 1-{5-[4-（benzyloxy）phenyl]-3-methyl-4,5-dihydropyrazol-l-yl} oxime ester dcrivatives were synthesized and characterized by elemental analysis, HRMS, ^1H NMR data. All the compounds were screened for their antibacterial potential in vitro against Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. The results indicate that compounds 8c and 8f possess potent activity with the minimum inhibitory concentrations（MIC） of 1.562--3.125 ug/mL against all the four bacteria. Compounds 8c, 8e and 8f show moderate inhibition against the DNA gyrase（IC50=1.9--2.5 ug/mL）. On the basis of the biological activities, structure-activity relationship was discussed.

关键词： 5-Aryl pyrazole Oxime ester Antibacterial activity

Effects of pressure and plastic addition on sticking of fine iron ore particles in fluidized bed reduction

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Journal of Iron and Steel Research International 2021年第2期28卷 140-151页

作者： Qi-yan Xu Zhang-han Gu zhi-ping li Ying-yi Zhang Hai-chuan Wang School of Metallurgical Engineering Anhui University of TechnologyMa’anshan 243002AnhuiChina

The adhesion of fine iron ore particles during fluidized bed reduction was studied using pressurized visible fluidized bed laboratory *** results showed that the optimal operating parameters for pure hydrogen reduction under high pressure were reduction temperature of 1073 K,particle size of 0.18-0.66 mm,pure H_(2) linear velocity of 0.8 m/s,reduction pressure of 200 kPa,and reduction time of 50 *** plastic particles were mixed into the fluidized bed,the optimal parameters were reduction temperature of 973 K,particle size of 0.18-0.66 mm,pure H_(2) linear velocity of 0.8 m/s,reduction pressure of 100 kPa,mass content of plastic particles of 8%,and reduction time of 65 *** chemical reaction resistance is much higher than the inner diffusion resistance at the initial stage of the reaction,whereas,in later stage,the inner diffusion resistance exceeds the chemical reaction *** contact area of iron atoms or iron whiskers gradually decreases with the increase in reduction pressure from 0.20 to 0.45 MPa,and the sticking trend gradually *** plastic particles in the fluidized reduction process of fine iron ore can effectively inhibit the adhesion among fine iron ore particles.

关键词： Fine iron ore Fluidized bed Reduction pressure Plastic particle Sticking Reduction

Simple Scheme for Directly Measuring Concurrence of Two-Qubit Pure States in One Step

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Communications in Theoretical Physics 2009年第2期51卷 252-254页

作者： YANG Rong-Can liN Xiu HUANG zhi-ping li Hong-Cai School of Physics and Opto-Electronics Technology Fujian Normal University Fuzhou 350007 China

In the present work, a simple scheme for the direct measurement of the concurrence of two-qubit pure states is proposed. The scheme is based on trapped ions and only needs one step when the two identical pure states are given. The vibrational mode in our proposal is only virtually excited, which is important in view of ***, the scheme is feasible based on current technologies.

关键词： concurrence trapped ions measurement one step

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World Journal of Clinical Cases 2021年第13期9卷 3070-3078页

作者： Qiao-Feng Ye Guang-Fei Wang Yi-Xue Wang Guo-ping Lu zhi-ping li Department of Clinical Pharmacy National Children's Medical CenterChildren's Hospital of Fudan UniversityShanghai 201102China Department of Pediatric Intensive Care Unit National Children's Medical CenterChildren's Hospital of Fudan UniversityShanghai 201102China

BACKGROUND Vancomycin is often used as an anti-infective drug in patients receiving antitumor *** are concerns about its adverse drug reactions during treatment,such as nephrotoxicity,ototoxicity,hypersensitivity reactions,***,potential convulsion related to high plasma concentrations of vancomycin in children receiving chemotherapy has not been *** SUMMARY A 3.9-year-old pediatric patient with neuroblastoma receiving vancomycin to treat post-chemotherapy infection developed an unexpected *** other potential disease conditions could explain the occurrence of the *** subsequently measured overly high plasma concentrations of vancomycin could possibly provide a clue to the occurrence of this *** peak and trough plasma concentrations of vancomycin were 59.5 mg/L and 38.6 mg/L,respectively,which were much higher than the safe *** with the Bayesian approach using MwPharm software showed that the area under the concentration-time curve over 24 h was 1086.6 mg·h/***,vancomycin was immediately stopped and teicoplanin was administered instead combined with meropenem and fluconazole as the anti-infective treatment *** Unexpected convulsion occurring in a patient after chemotherapy is probably due to toxicity caused by abnormal pharmacokinetics of *** evaluation and close therapeutic drug monitoring should be conducted to determine the underlying etiology and to take the necessary action as soon as possible.

关键词： Vancomycin Neuroblastoma Convulsion Children Adverse drug reaction Case report

Managed aquifer recharge(MAR)applications in China–achievements and challenges

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Journal of Groundwater Science and Engineering 2022年第1期10卷 57-69页

作者： Jin-xing Guo zhi-ping li Catalin Stefan Center of Hydrogeology and Environmental Geology China Geology SurveyBaoding 071051Hebei ProvinceChina Beijing Institute of Hydrogeology and Engineering Geology Beijing 100195China Department of Hydrosciences Technical University of DresdenPirna 01796Germany

Groundwater is of fundamental significance for human society,especially in semi-arid areas in ***,due to the fast social and economic development,China has been suffering from the shortage of water *** this situation,managed aquifer recharge(MAR)was considered to be an effective measure for the sustainable management of groundwater *** 1960 s,China successfully implemented many MAR schemes for different purposes such as restoration of groundwater tables,prevention of seawater intrusion,increasing urban water supplies and controlling land *** those successful experiences China developed a scientific and applicable system to implement MAR ***,there were still many challenges in this field,for example,treated waste water had been barely used for *** present review summarized the achievements in MAR applications in China as well as the associated challenges within the past 55 years before the year 2016.

关键词： Managed aquifer recharge(MAR) Groundwater Recharge Aquifer Storage