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A Continuum Model for Heavy-electron Metal

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Journal of Materials Science & Technology 1997年第2期13卷 133-136页

作者： liu, wm Yu, Z Pu, FC YUNNAN NORMAL UNIV DEPT PHYSKUNMING 650092PEOPLES R CHINA CHINESE ACAD SCI INST PHYSBEIJING 100080PEOPLES R CHINA

The exact eigenstates of the Hamiltonian of a continuum model for heavy-electron metal are constructed by using the Bethe ansatz. The Bethe ansatz equations are obtained from the periodic boundary conditions. The resu... 详细信息

关键词： Metals

Solitary Multiphonon Bound States and Periodic Wave Solutionin Inharmonic Molecular Crystals

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Journal of Materials Science & Technology 1996年第3期12卷 161-165页

作者： liu, wm Pu, FC Zhou, BL ACAD SINICA INST MET RESINT CTR MAT PHYSSHENYANG 110015PEOPLES R CHINA

Employing the coherent state ansatz and the time-dependent variational principle, we obtain a partial differential equation of motion from Hamiltonian in inharmonic molecular crystals. By using the method of multiple scales, we reduce this equation into the envelope function and find that the amplitude function satisfied a nonlinear Schrodinger equation. Introducing the inverse scattering transformation, we gain the single-, two- and N- soliton solutions. The energy and the spatial configurations of the system are given. We also acquire the periodic wave solution and analyze its stability.

关键词： Wave Solitary Multiphonon Bound States and Periodic Wave Solutionin Inharmonic Molecular Crystals Rev

Expression of matrix metallo-proteinase-28 in human normal cytotrophoblast cells and a choriocarcinoma cell line,JEG-3

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Chinese Science Bulletin 2002年第9期47卷 732-736页

作者： Zhang, J Cao, YJ liu, wm Zhao, BS Zeng, GQ Duan, EK Chinese Acad Sci Inst Zool State Key Lab Reprod Biol Beijing 100080 Peoples R China

There are striking similiarities present between the behavior of invasive placentaL cells and that of invasive cancer cells. Matrix metalloproteinases (MMPs) are one of the most important mediators. MMP-28, the new member of MMPs, was sequenced and identified recently. Expression of MMP-28 mRNA and protein in the cytotrophoblast cells and a choriocarcinoma cell line, JEG-3 cell, was conducted by zymography, RT-PCR and Northern blot. There is MMP-28 mRNA expression in both the cytotrophoblast cells and JEG-3 cells by RT-PCR. The activity of MMP-28 in cytotrophoblast cells was significantly weaker than that in JEG-3 (P < 0.01) by zymography. Furthermore, mRNA expression of MMP-28 was significantly stronger (P < 0.001) in JEG-3 than in human cytotrophoblast cells in a time-dependent way by Northern Blot. Our results suggest that MMP-28 may play a role in some of the tissue-remodeling events associated with normal pregnancy and tumor progression.

关键词： cytotrophoblast cell choriocarcinoma cell line JEG-3 matrix metalloproteinases MMP-28.

工程化视知觉感知学习系统治疗儿童弱视的效果评价

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中国组织工程研究与临床康复 2007年第44期11卷 8826-8829页

作者：刘伟民黄建忠沈降罗妍刘洪婷广西壮族自治区人民医院视光中心广西壮族自治区南宁市530021

目的:传统治疗弱视的方法(如遮盖治疗,精细训练等)起效慢,疗效欠佳;视知觉感知学习系统作为一种针对性很强的儿童弱视治疗方法,其疗效需进一步观察。方法:①收集2006-09/2007-02于广西壮族自治区人民医院视光中心就诊的弱视儿童125例250... 详细信息

目的:传统治疗弱视的方法(如遮盖治疗,精细训练等)起效慢,疗效欠佳;视知觉感知学习系统作为一种针对性很强的儿童弱视治疗方法,其疗效需进一步观察。方法:①收集2006-09/2007-02于广西壮族自治区人民医院视光中心就诊的弱视儿童125例250眼,女73例,男52例,年龄(6±2)岁。患儿家长知情同意并签署知情同意书;实验经医院伦理委员会批准。②根据视功能检查结果,采用视知觉感知学习系统对弱视患儿进行针对性的治疗,如双眼视力相差两行以上,辅助遮盖优势眼治疗。1个月为1个疗程,每天训练2次,每次2个训练内容(程序),每个训练内容10min,40min/d,训练内容之间要求有10min左右的休息间隙。训练需在安静和黯淡环境下进行。每月定期复查双眼视力及其各项视功能的恢复情况,并根据复查结果继续原程序治疗或调整治疗程序。结果:弱视患儿125例均进入结果分析。①视力:视知觉感知学习系统治疗儿童弱视的总有效率为75.2%,视力提高行数从治疗第3个月起有大幅增加(P<0.05),最佳矫正视力由治疗前的0.60±0.23提高至治疗后的0.86±0.26,差异有显著性意义(P<0.05)。②治疗时间与疗效:疗效达到进步的平均时间为(2.82±1.30)个月,达到基本治愈为(2.87±1.40)个月。治疗3个月的患者视力疗效达进步率最高[98%(39/40)],治疗1个月的患者视力进步率最低[55%(31/56),P<0.05]。基本治愈率随治疗时间的增加递增,治疗4个月组基本治愈率最高[67%(31/46),P<0.05]。结论:视知觉感知学习系统治疗儿童弱视疗效快,达到有效的时间为治疗两三个月。

关键词：弱视视知觉感知学习疗效

SEPARATION　CHARACTERISTICS　OF　THE　HYDROCYCLONE　WITH　A　CENTRAL　CONE　AND　ANNULAR　TEETH

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中国有色金属学会会刊：英文版 1996年第4期6卷 11-15页

作者： Chu, LY Chen, wm Luo, Q NORTHEASTERN UNIV DEPT MINERAL ENGN SHENYANG 110006 PEOPLES R CHINA SICHUAN UNION UNIV DEPT CHEM PROC MACHINERY CHENGDU 610065 PEOPLES R CHINA

ＳＥＰＡＲＡＴＩＯＮＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＴＨＥＨＹＤＲＯＣＹＣＬＯＮＥＷＩＴＨＡＣＥＮＴＲＡＬＣＯＮＥＡＮＤＡＮＮＵＬＡＲＴＥＥＴＨ￥ＣｈｕＬｉａｎｇｙｉｎ；ＣｈｅｎＷｅｎｍｅｉ（Ｄｅｐａｒｔｍｅｎｔｏ... 详细信息

ＳＥＰＡＲＡＴＩＯＮＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＴＨＥＨＹＤＲＯＣＹＣＬＯＮＥＷＩＴＨＡＣＥＮＴＲＡＬＣＯＮＥＡＮＤＡＮＮＵＬＡＲＴＥＥＴＨ￥ＣｈｕＬｉａｎｇｙｉｎ；ＣｈｅｎＷｅｎｍｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｃａｌＰｒｏｃｅｓｓｉ...

关键词： ydrocyclone central cone annular teeth separation sharpness classification efficiency separation characteristics

THERMODYNAMICS OF THERMAL DECOMPOSITION OF ALUMINUM HYDROXIDE

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中国有色金属学会会刊：英文版 1997年第3期7卷 133-135页

作者： Zeng, wm Chen, NY Chen, QY CHINESE ACAD SCI SHANGHAI INST METSHANGHAI 200050PEOPLES R CHINA CENT S UNIV TECHNOL DEPT CHEMCHANGSHA 410083PEOPLES R CHINA

ＴＨＥＲＭＯＤＹＮＡＭＩＣＳＯＦＴＨＥＲＭＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＡＬＵＭＩＮＵＭＨＹＤＲＯＸＩＤＥ①ＺｅｎｇＷｅｎｍｉｎｇ，ＣｈｅｎＮｉａｎｙｉＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＭｅｔａｌｕｒｇｙ，Ｃ... 详细信息

ＴＨＥＲＭＯＤＹＮＡＭＩＣＳＯＦＴＨＥＲＭＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＡＬＵＭＩＮＵＭＨＹＤＲＯＸＩＤＥ①ＺｅｎｇＷｅｎｍｉｎｇ，ＣｈｅｎＮｉａｎｙｉＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＭｅｔａｌｕｒｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃ...

关键词： Al(OH) 3 thermal decomposition thermodynamics

Calculation of Thermodynamic Properties from Phase Diagram of the Pb-Zn System

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Journal of Materials Science & Technology 1997年第3期13卷 233-234页

作者： Zeng, wm Chen, NY Qiu, GF Shanghai Institute of Metallurgy Chinese Academy of Sciences Shanghai 200050 China

The formulas for obtaining the interaction parameters of the liquid solution were first deduced from the immiscible phase diagram of binary system. Then, the relationships between activity coefficients and interaction parameters of the binary system were also deduced. Finally, thermodynamic properties of the Pb-Zn system were calculated by using these formulas.

关键词： Lead alloys

Electrochemical characteristics of poly(ophenylendiamine) film electrodes in phosphatic solution

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Chinese Journal of Chemistry 1997年第4期15卷 343-352页

作者： Ye, BX Zhang, wm Zhou, XY WUHAN UNIV DEPT CHEMWUHAN 430072PEOPLES R CHINA

The electrochemical characteristics of poly(o-phenylendiamine) (POPD) film modified electrodes have been investigated using different electrochemical techniques. The main interest is focused on the effect of potential and film thickness on the electrode process. Good agreement has been found for the apparent diffusion coefficient estimated by chronocoulometry and impedance spectroscopy. The charge transfer process within POPD films is diffusion processes at negative and positive overpotentials and electron hopping mechanism at formal potential. The POPD film conductivity of the oxidized state is better than that of the reduced state. For all electrode processes, the H+ may penetrate the film/electrolyte interface and take part in charge transfer or protonation-deprotonation of phenazine rings.

关键词： electropolymerization o-phenylendiamine electrochemistry

New Bibenzyl and Phenanthrenedione from Dendrobium densiflorum

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Chinese Chemical Letters 2000年第8期11卷 705-706页

作者： Fan, CQ Zhao, wm Qin, GW Chinese Acad Sci Shanghai Inst Mat Med Shanghai 200031 Peoples R China

A new bibenzyl 1 and a new phenanthrenedione 2 were identified from the stems of Dendrobium densiflorum (Orchidaceae).

关键词： Dendrobium densiflorum Orchidaceae phenanthrenedione bibenzyl