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Pharmacokinetic comparison between ultraselection of uterine artery and peripheral vein chemotherapy of carboplatin in cervical cancer

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The Chinese-German Journal of Clinical Oncology 2009年第5期8卷 251-254页

作者： Wei Wang Chunlin chen Ping Liu Ben Ma Cui Liu lani chen Department of Obsterics and Gynaecology Nanfang Hospital Southern Medical University Guangzhou 510515 China Department of Obsterics and Gynaecology The First People＇s Hospital of Guangzhou GuangZhou 510180 China Department of Obsterics and Gynaecology The Red Cross Society Hospital of Yulin Yunlin 537000 China Department of Obsterics and Gynaecology The First People＇s Hospital of Shunde Foshan 528225 China

Objective:The present study is to compare pharmacokinetics difference of carboplatin by using ultraselection uterine artery with by using peripheral vein in cervical ***:Thirteen patients with locally advanced cervical cancer who had been proved by pathobiology were randomly divided into two groups:the ultraselection uterine artery group(group A, n = 6) and the peripheral vein(group B, n = 7).Carboplatin was administered by infusing into artery or vein in both groups at the dosage of 300 mg/*** from the cervical tumor were collected at different times after infusion in both groups and then ***:The peak concentration of platinum in tumor tissue was about 2.79 times higher in group A than that of group B(P < 0.05).The platinum concentrations in tumor in group A reached its peak levels immediately after ***, group B had delayed ***, for the time point of 0 min, when the administration finished immediately, the platinum concentration in tumor was significantly higher when compared with group B(P < 0.05).The tumor tissue area under the concentration(AUC) of carboplatin was about 2 times higher in group A than that of group B(P < 0.05).Conclusion:We observed the pharmacological advantages of chemotherapy by using ultraselection uterine artery administration of chemotherapeutic agent carboplatin in tumor tissue which provided theoretical basis and laboratory parameters of the intra-arterial chemotherapy for gynecologic malignancy.

关键词： cervical cancer uterine artery vein intra-arterial infusion chemotherapy peak value of platinum area underthe concentration time curve

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Metal hydride work pair development and its application on automobile air conditioning systems

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第2期8卷 197-204页

作者： QIN Feng chen Jiang-ping ZHANG Wen-feng chen Zhi-jiu Institute of Refrigeration and Cryogenic Engineering Shanghai Jiao Tong University Shanghai 200030 China Research Center Zhejiang Yinlun Machinery Co. Ltd. Tiantai 317200 China

Aiming at developing exhaust gas driving automobile air conditioning systems, a hydride pair lani4.61Mn0.26A10.13/ La0.6Y0.4Ni4.8Mn0.2 was developed working at 393-473 K/293-323 K/263-273 K. Property tests showed that both alloys have flat plateau slopes and small hystereses; system theoretical coefficient of performance （COP） is 0.711. Based on this work pair, a function proving automobile metal hydride refrigeration system was constructed. The equivalent thermal conductivities of the activated reaction beds were merely 1.1-1.6 W/（m-K）, which had not met practical requirement. Intermittent refrigeration cycles were achieved and the average cooling power was 84.6 W at 423 K/303 K/273 K with COP being 0.26. By altering cycling parameters, experiment data showed that cooling power and system COP increase with the growth of heat source temperature as well as pre-heating and regeneration time while decrease with heat sink temperature increment. This study confirms the feasibility of automobile metal hydride refrigeration systems, while heat transfer properties of reaction beds still need to be improved for better performance.

关键词： Metal hydride Air conditioning Reaction bed Automobile Coefficient of performance (COP)

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First-principles calculations of lani_(5-x)Sn_xH_y intermetallics and intermediate phase

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Acta Metallurgica Sinica(English Letters) 2009年第5期22卷 330-338页

作者： Dong chen Jingdong chen Yinglu ZHAO Hailiang HUO Benhai YU Deheng SHI College of Physics and Electronic Engineering Xinyang Normal University Xinyang 464000 China College of Physics and Electronic Engineering Ludong University Yantai 264025 China

The crystal and electronic structures of lani4.75Sn0.25 intermetallics and lani4.5Sn0.5Hy （y=2.0, 2.5） intermediate phase have been investigated by the fullpotential linearized augmented plane wave （FP-LAPW） method. Hydrogen occupation sites in lani4.5Sn0.5Hy have been determined based on Westlake＇s criterions：（1） the minimum hole radiuS is 0.04 nm; （2） the minimum H-H distance is 0.21 nm; as well as geometry optimizations and internal coordinates optimizations. We find that hydrogen atoms prefer to occupy the 12n＊, 6m, 12o, 6m＊ sites in lani4.5Sn0.5H2.0 and the 6m＊, 4h, 6m, 12o, 12n＊ sites in lani4.5Sn0.5H2.5. The specific coordinates of hydrogen atoms in lani4.5Sn0.5Hy are also determined. The results show that hydrogen atoms tend to keep away from tin atoms. The maximum hydrogen content decreases compared with lani5. The interactions between Sn and Ni with H play a dominate role in the stability of lani4.5Sn0.5-H system. Lattice expansion and increment of Fermi energy EF show that both Sn and H atoms decrease structural stability of these alloys.

关键词： Rare-earth intermetallics Hydrogen storage Site occupancy Electronic structure

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Experimental and computational investigations of lani(5-x)Alx (x = 0,0.25, 0.5, 0.75 and 1.0) tritium-storage alloys

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Journal of Materials Science & Technology 2018年第9期34卷 1699-1712页

作者： Guoliang Liu Demin chen Yuanming Wang Ke Yang Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China University of Chinese Academy of Sciences Beijing 110049 China

Although already scientists in recent years have reported some experimental and theoretical results of lani-Al series of tritium-storage alloys, several key aspects remain the subject of considerable debate. In an effort to interpret some of these unknowns, we have performed experimental and theoretical investigations for lani（5-x）Alx（x = 0, 0.25, 0.5, 0.75 and 1.0） tritium-storage alloys. Firstly, the XRD characterization indicates that the unit cell volumes of lani（5-x）Alx increase with Al content in alloys. Secondly, the PCisotherm measurement of lani（5-x）Alxalloys shows that their hydrogen absorption/desorption plateau pressures reduce with the increase of Al content while their plateau widths narrow simultaneously. The deuterium absorption/desorption plateaus have a similar trend to hydrogen＇s except for their plateaus being higher than hydrogen＇s. To explain the above experimental findings, a series of calculations based on density functional theory（DFT） and frozen phonon approach have been performed. The results manifest that：（1） the partial substitutions of Al for Ni reduce the hydrogen formation energies of lani（5-x）AlxH and the number of available interstitial sites, and therefore lead to the absorption/desorption plateau pressures being reduced and the plateau widths being narrowed down at the same experimental temperatures;（2） the covalent interaction between H and Ni is an important factor for estimating the stability of lani（5-x）Alx-H system;（3） since the calculated enthalpy change H is generally more accurate than the calculated entropy change S with respect to the corresponding experimental value for each lani（5-x）AlxH（or D）, the curves of H vs. hydrogen storage capacity instead of Van＇t Hoff relation, can be used to predict the experimental plateau pressures of lani（5-x）Alx-H（D or T） at a given temperature;（4） the hydrogen isotope effect of lani（5-x）Alx-H（D or T） system can be quantitatively described as a linearity relation between ⊿ZPE ＋ ⊿H^（vib）

关键词： Hydrogen isotope storage material lectron structure calculation Thermodynamic property calculation

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Electrochemical performances of as-cast and annealed La_(0.8-x)Nd_xMg_(0.2)Ni_(3.35)Al_(0.1)Si_0.05(x=0-0.4) alloys applied to Ni/metal hydride (MH) battery

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Rare Metals 2013年第2期32卷 150-158页

作者： Yang-Huan Zhang Hui-Ping Ren Tai Yang chen Zhao Li-Cui chen Hong-Wei Shang Dong-Liang Zhao Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and Technology Department of Functional Material Research Central Iron and Steel Research Institute

The La-Mg-Ni-based A2B7-type Lao.8_xNdx ***.o5 （x = 0, 0.1, 0.2, 0.3, and 0.4） electrode alloys were prepared by casting and annealing. The influence of the partial substitution of Nd for La on the structure and electrochemical performances of the alloys was investigated. The structural analysis of X-ray diffraction and scanning electron microscopy reveals that the experimental alloys consist of two major phases：（La,Mg）2Ni7 with the hexagonal Ce2Ni7-type structure and lani5 with the hexagonal CaCus-type structure as well as some residual phases of lani3 and NdNis. The electrochemical measurements indicate that an evident change of the electrochemical performance of the alloys is associated with the substitution of Nd for La. The discharge capacity of the alloy first increases then decreases with the growing Nd content, whereas their cycle stability clearly grows all the time. Furthermore, the measurements of the high rate discharge ability, the limiting current density, and hydrogen diffusion coefficient all demonstrate that the electrochemical kinetic properties of the alloy electrodes first augment then decline with the rising amount of Nd substitution.

关键词： A2B7-type electrode alloy Substitution Lawith Nd Structure Electrochemical performance

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Zr-Cr-Ni BASED MULTICOMPONENT METAL HYDRIDE ELECTRODES

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中国有色金属学会会刊：英文版 1997年第3期7卷 2-7页

作者： Yang, XG Lei, YQ chen, YL Wang, QD ZHEJIANG UNIV DEPT MAT SCI & ENGNHANGZHOU 310027PEOPLES R CHINA

ＺｒＣｒＮｉＢＡＳＥＤＭＵＬＴＩＣＯＭＰＯＮＥＮＴＭＥＴＡＬＨＹＤＲＩＤＥＥＬＥＣＴＲＯＤＥＳ①ＹａｎｇＸｉａｏｇｕａｎｇ，ＬｅｉＹｏｎｇｑｕａｎ，ＣｈｅｎＹａｎｇｌｉｎ，ＷａｎｇＱｉｄｏｎｇＤｅｐａｒｔｍｅｎｔ... 详细信息

ＺｒＣｒＮｉＢＡＳＥＤＭＵＬＴＩＣＯＭＰＯＮＥＮＴＭＥＴＡＬＨＹＤＲＩＤＥＥＬＥＣＴＲＯＤＥＳ①ＹａｎｇＸｉａｏｇｕａｎｇ，ＬｅｉＹｏｎｇｑｕａｎ，ＣｈｅｎＹａｎｇｌｉｎ，ＷａｎｇＱｉｄｏｎｇＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃ...

关键词： Zr based hydride electrodes alloying effect electrochemical discharge capacity cyclic stability self discharge properties

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Phase Structure and Electrochemical Properties of Rare Earth Based Hydrogen Storage Alloys

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Journal of Rare Earths 2004年第Z1期22卷 228-231页

作者： chen Weidong Liu Xiangdong Liu Xiao Che Guangdong School of Material Science and Technology Inner Mongolia University of Technology Huhhot 010062 China School of Material Science and Technology Inner Mongolia University of Technology Huhhot 010062 China School of Material Science and Technology Inner Mongolia University of Technology Huhhot 010062 China School of Material Science and Technology Inner Mongolia University of Technology Huhhot 010062 China

The rare earth based hydrogen storage alloys MmxM1 1 - x ( Ni3.55 Co0.75 Mn0.4 A10.3 ) ( x = 0 ～ 0.5 ) were investigated in this *** Ml: Mm ratio to change the content of La,Ce,Pr and Nd in the alloys and then to change the phase structure, the influences of phase structure on the electrochemical properties were *** results indicate that the main phase of all alloys is lani5 with CaCu5 type structure and the crystal lattices constants of lani5 are changed with increasing x value, i.e, decreased a-axis, increased c-axis and axis ratio and nonlinear decreased crystal *** crystal volume of the alloy with x = 0.3 is larger than *** is second phase A1lani4 in alloys when x≥0.3, which decrease the discharge capacity, but increase the cycling stability and high rate discharge *** comprehensively, the alloy with x = 0.3 shows the higher discharge capacity and the better cycling stability.

关键词： rare earth based hydrogen storage alloy phase structure activation discharge capacity cycling stability high rate discharge ability

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Electrochemical Hydrogen Storage Performances of the Si Added La-Mg-Ni-based A_2B_7-type Electrode Alloys for Ni/MH Battery Application

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Journal of Wuhan University of Technology(Materials Science) 2015年第1期30卷 166-174页

作者：张羊换 YANG Tai chen Licui XU Chao REN Huiping ZHAO Dongliang Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and Technology Department of Functional Material Research Central Iron and Steel Research Institute

The casting and annealing technologies were applied to fabricate the La0.8Mg0.2Ni3.3Co0.2Six （x = 0-0.2） electrode alloys. The effects of Si content and annealing temperature on the structure and electrochemical performances of the alloys were investigated systematically. The analyses of XRD and SEM show that all the alloys possess a multiphase structure, involving two main phases （La, Mg）2Ni7 and lani5 as well as a residual phase lani3. The addition of Si brings on an evident increase in the lani5 phase and a decrease in the （La, Mg）2Ni7 phase, without altering the main phase component of the alloy, which also makes the lattice constants and cell volumes of the alloy enlarged. Likewise, the annealing treatment engenders the same action on the lattice constants and cell volumes as adding Si. Simultaneously, it gives rise to the variation of the phase abundance and the coarsening of the alloy grains. The electrochemical measurements indicate that the addition of Si ameliorates the cycle stability of the as-cast and annealed alloys significantly, but impairs their discharge capacities clearly. Similarly, the annealing treatment makes a positive contribution to the cycle stability of the alloy evidently, and the discharge capacity of the alloy shows a maximum value with annealing temperature rising. Furthermore, the high rate discharge ability （HR） first augments and then declines with the rising of Si content and annealing temperature.

关键词： A2B7-type electrode alloy Si addition annealing temperature structure electrochemical performances

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Chemical diffusion and oxygen exchange of lani_(0.4)Fe_(0.6)O_(3-δ)ceramics

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Journal of Advanced Ceramics 2014年第3期3卷 240-249页

作者： Jianying chen Vladimir VASHOOK Dmytro M.TROTS Shaorong WANG Ulrich GUTH Chinese Academy of Sciences 1295 Dingxi RoadShanghai 200050China Dresden University of Technology D-01062 DresdenGermany Bayerisches Geoinstitut Universität BayreuthD-95440 BayreuthGermany Meinsberg Kurt-Schwabe Research Institute Kurt-Schwabe-Straße 4D-04720 Ziegra-KnobelsdorfGermany Shanghai Nanotechnology Promotion Center ShanghaiChina

Oxygen surface exchange and oxygen chemical diffusion coefficients of lani_(0.4)Fe_(0.6)O_(3-δ)ceramics are determined via conductivity relaxation method after stepwise change of temperature in the range of 700-950℃in air and Ar/O2 gas flow at oxygen partial pressures(p_(o2))of 4 Pa,18 Pa,37 Pa,47 Pa and 59 *** highest conductivity(about 160 S·cm^(-1))is found at 950℃in *** oxygen exchange(δ=0)below 700℃is observed in the investigated p_(o2) *** oxygen exchange coefficients determined in reduction mode are higher than those determined in oxidation *** is explained by clusterization of oxygen vacancies on the surface of the sample investigated in oxidation *** opposite tendency is found for chemical diffusion *** surface,the oxygen vacancies of the volume region are probably not clustered and have predetermined the higher oxygen diffusion mobility of the sample treated in oxidation mode.

关键词： oxygen non-stoichiometry conductivity chemical diffusion coefficient surface exchange coefficient

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Effect of cobalt substitution for nickel on microstructural evolution and hydrogen storage properties of La_(0.66)Mg_(0.34)Ni_(3.5-x)Co_(x) alloys

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Journal of Rare Earths 2024年第5期42卷 930-939,I0004页

作者： Xincong He Huazhou Hu Ruizhu Tang Wenhao Zhou Houqun Xiao Xiaoxuan Zhang Chuanming Ma Qingjun chen School of Rare Earths University Science&Technology of ChinaHefei230026China Key Laboratory of Rare Earths Chinese Academy of SciencesJiangxi Institute of Rare EarthsGanjiang Innovation AcademyChinese Academy of SciencesGanzhou341000China

Superlattice hydrogen storage alloys offer a compelling advantage with rapid hydriding rate and high storage ***,its practical applications face challenges including complex structure,low dehydriding capacity,and cyclic *** this work,we successfully prepared La_(0.66)Mg_(0.34)Ni_(3.5-x)Co_(x) superlattice hydrogen storage alloys with enhanced dehydriding capacity and stability by partially substituting Co for Ni.X-ray diffraction(XRD)refinements analysis reveals the presence of(La,Mg)_(3)Ni_(9),(La,Mg)_5Ni_(19),and lani_(5) phases within the *** Co substitution in the La_(0.06)Mg_(0.34)Ni_(3.4)Co_(0.1)alloy,there is a significant increase in content of the(La,Mg)_(3)Ni_(9) phase and a reduction in the hysteresis factor,resulting in an improved reversible hydrogen storage capacity from 1.45 wt%to 1.60 wt%.The dehydriding kinetics of the alloy is controlled by diffusion model with an activation energy of 8.40 kJ/***,the dehydriding enthalpy value of the Co-substituted alloy decreases from 30.84 to 29.85 kJ/***,the cycling performance of the alloy after Co substitution exhibits excellent stability,with a capacity retention rate of 92.3%after 100 *** findings provide valuable insights for the development of cost-effective hydrogen storage materials.

关键词： Superlattice hydrogen storage alloy Co substitution Microstructure Kinetics Thermodynamics Rare earths

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