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| 1 | DYNAMIC BEHAVIOR ANALYSIS FOR LANDING-GEAR WITH DIFFERENT TYPES OF DUAL-CHAMBER SHOCK-STRUTS显示文摘In this paper three types of dual- chamber shock- struts are considered in dynamic analyses of landing-gear behavior during impact and taxi. Their dynamic characteristics are compared with each other according to calculation results, and some conclusions are presented.It is very helpful for selecting a suitable type of dual-chamber shock-strut in landing-gear design. | Nie Hong Qiao XinAircraft Engineering Department, Nanjing Aeronautical InstituteNanjing 210016, China Gao Zejun R&D Institute of Chendu Aircraft Corp.Chendu 610041, ChinaZhou Lanqin Landing Gear Manufa ctoryBox 43#, Yangxian, Shaanxi 723313, China | 1991 | Chinese Journal of Aeronautics1991，6，2： | 10 |
| 2 | Two new cyclopeptides from stellaria yunnanensis显示文摘In the previous papers, we reported the isolation and structural elucidation of three new cyclopeptides, namely stellarin A, B and C, from the fresh roots of stellaria yunnanensis Franch. In a continued study on this plant, other two new cyclopeptides named stellarin D(1) and E(2) were obtained and their structures were established to be cyclo (Gly-Tyr-Leu-Phe-Pro-Ile-Pro)(1), cyclo(Gly-Ile-Pro-Tyr-Ile-Ala-Ala)(2), respectively. | ZHAO, Yu-Rui WANG, Xian-Kai ZHAO, Tong-FangDepartment of Medicinal Chemistry of Natural Products, School of Pharmacy, West China University of Medical Sciences, Chendu, Sichuan 610041, ChinaZHOU, JunLaboratory of Phytochemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650204, ChinaHUANG, Xiao-Lin WU, Hou-MingState Key Laboratory of Bio-Organic & Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032,China | 1995 | Chinese Journal of Chemistry1995，13，3： | 5 |
| 3 | EFFECT OF ACUPUNCTURE ON ELECTROMYOGRAPH OF MYOSITIS AND PATHOLOGY OF MUSCLE显示文摘An animal model of experimental polymyositis(EPM)similar to humampolymyositis(PM)was made by immuning with skeletal muscular homogenate of rabbits.We treatedthem by acupuncturing Zusanli(ST 36)and Xuehai(SP 10)for 8 consecutive weeks and comparedthem with control group.The changes of electromyogram and muscular pathology were analysed.The results show that all changes in acupuncture group are milder than that in control group and sug-gest that acupuncture has some beneficial adjustment for the immunity of PM. | Ma Xiaoping Chen Gongsun Dept.of Acupuncture and Moxibustion,Jiangsu Province People’s Hospital,Nanjing 210029,ChinaChai Sao Sheng Mingju Cheng Weixian Gao Chaoya Nerve Dept.of Jiangsu Province People’s Hospital,Nanjing,ChinaZhou Qi Nanjing Ocorpation Diseases Preavention and Treatment Center,Nanjing,China | 1993 | World Journal of Acupuncture-Moxibustion1993，3，2： | 0 |
| 4 | DEPENDENCE OF MAGNETISM OF Nd-Fe-B SINTERMAGNETS ON ORIENTATION MAGNETIC FIELD显示文摘The effect of the orientation magnetic field on the permanent magnetism of Nd-Fe-B sintermagnets is investigated. The results show that the variation law of mag-netism with orientation field obviosly changes at the critical orientation field and the in-tensity of the orientation field should be determined by the dimension ratio of the magnet for effectively utilizing its magnetic energv product. | GAO Ruwei, XIAO MingshanShandong University, Jinan, ChinaZHOU Shouzeng, LIFubiao, ZHANG LidongNational Laboratory, University of Science and Technology Beijing, China Manuscript received 11 April, 1994 | 1994 | Acta Metallurgica Sinica(English Letters)1994，7，2： | 0 |
| 5 | THE FORMABILITY OF COMPLEX FLOURIDE COMPOUNDS显示文摘The formability of complex flourides has been studied by chemical bond parameter-patternrecognition method. In a multi-dimensional space spanned by ionic radius, ionicpolarizability, electronegativity and ionic charge of the metal elements, the binary complexflouride-forming systems and binary flouride systems without complex flouride formation distributein different regions with a clear-cut boundary. The mathematical models obtained areuseful for new complex flouride predicton. | LI Zheng LIU Honglin CHENG Zhaonian CHEN Nianyi, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai, ChinaZHOU Jiaju, Institute of Chemical Metallurgy, Academia Sinica, Beijing, China CHEN Nianyi, Professor, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050, China | 1992 | Acta Metallurgica Sinica(English Letters)1992，5，7： | 0 |
| 6 | NON-EQUILIBRIUM SEGREGATION STRUCTURE OF P IN COLD ROLLED Fe-P ALLOYS AND ITS RELATION WITH TEXTURE VARIATION显示文摘The relations between the non-equilibrium segregation process of P and the change of thetexture in Fe-P alloys have been studied by analytical electron microscope and orientationdistribution function.It was shown that P segregated preferentialy on the{110}slip planes,the P segregation structures with repeating cycle a=1.582 nm form at 450℃.<001>//ND direction abated.<111>//ND direction heightened.And{111}<110>has a tendancyto transform into{111}<143>texture in recovering process.{111}<143>direction trans-forms into{111}<112>direction after recrystalizing.A model to describe the effects ofnon-equilibrium segregation structures of P on orientation change was proposed and em-ployed to interpret the experiment results. | ZHANG Lixin NING Hua Laboratory of Corrosion Science,Institute of Corrosion and Protection of Metals,Academia Sinica.Shenyang,ChinaZHOU Jing LI Liguang Institute of Metal Research,Academia Sinica,Shenyang,China Professor,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang 110015,China | 1992 | Acta Metallurgica Sinica(English Letters)1992，5，6： | 0 |
| 7 | TRANSFORMATION INDUCED SUPERPLASTICITY IN 18Ni MARAGING STEEL显示文摘After exploring the influence of stress,cold-rolling reduction and cooling rate on transforma-tion induced strain,the transformation induced superplasticity forming technique of the 18Nimaraging steel(2450 MPa)was developed.Through 14 times γα′ cyclic transformation,thelimited elongation of 320% can be obtained in 60% cold-rolled specimen.TEM observationrevealed that the morphology of stress induced martensite is massive. | YIN Zhongda Harbin Institute of Technology,Harbin,ChinaZHOU Yongkang Shanghai Centrifugal Machinery Research Institute,Shanghai,China | 1992 | Acta Metallurgica Sinica(English Letters)1992，5，4： | 0 |
| 8 | The Antimony Production in China显示文摘A full account of the antimony production in China may be found in two new books,respectively titled“Antimony”and“The Metallurgy of Antimony”.The former is published inChinese in 1987 by Metallurgical Industry Press,Beijing and the latter published in English in 1988by Central South University of Technology Press.The present paper is only an outline extractedfrom the two books.It is divided into four parts,namely:a brief historical account of | Zhao Tiancong Central South University of Technology,Changsha,ChinaZhou Weitao Xikuangshan Bureau of Mines.Lengshaijiang.China | 1989 | Rare Metals1989，9，2： | 0 |
| 9 | PRECIPITATION OF TiC IN METASTABLE β-Ti ALLOY显示文摘In order to clarify that the IFP and the “Type 2”α phase are also arising from TiC,ametastable β-Ti alloy was selected for investigation in this work.The results showed that af-ter heating the alloy just below the α+β→β transus temperature and quenching,the TiC lay-er existed at the α/β interface.The morphology of TiC is similar to that of the IFP arisingfrom TiH2 in the α-β two-phase alloys.The IFP TiC also provided an easy crack path orthe crack initiation sites.The fracture is also identical to that caused by IFP TiH2.The arceddiffractions(characteristic of “Type 2”α)were found in the selected area diffraction pat-terns of some specimens which had been isothermally aged after solid solution treatment.Theparticles which bring on the arced diffractions may be TiC on the basis of structure and lat-tice parameter analysis,not the so called “Type 2”α phase. | YU Xuejie WANG Jianlin Shanghai Iron and Steel Research Institute,Shanghai,ChinaZHOU Tianjian Anhui Institute of Technology,Hefei,China YU Xuejie,Senior Engineer,Shanghai Iron Steel Research Institute,1001 Taihe Road,Wusong,Shanghai,China. | 1989 | Acta Metallurgica Sinica(English Letters)1989，2，1： | 0 |
| 10 | CALCULATION OF NaCl-BaCl_2-SrCl_2 PHASE DIAGRAM显示文摘The mathematical formulas are given for calculating the partial molar thermodynamic proper-ties in a ternary system from its three corresponding binary systems based on the new ternarysymmetric model presented by the authors in the foregoing paper.Applying this model toNaCl-BaCl2-SrCl2 system,the phase diagram of which as well as some isothermal sectionshave been calculated.The devations of temperature between the calculated and experimen-tal diagrams are less than five degrees. | LI Ruiqing Beijing General Research Institute for Non-ferrous Metals,Beijing,ChinaZHOU Guozhi University of Science and Technology Beijing,Beijing,China | 1989 | Acta Metallurgica Sinica(English Letters)1989，2，12： | 0 |
| 11 | Studies of the Catalytic Activity and Deactivation of Calcined Layered Double Hydroxides in the Reaction of Ethanol with Propylene Oxide显示文摘The reaction of ethanol with propylene oxide over calcined layered double hydroxides(CLDH) was investigated. The results show that CLDH has a good activity and a good selectivity, but the activity and the selectivity of CLDH decrease when CLDH reforms LDH- the so called 'memory effect'. The influence of the 'memory effect' on the CLDH returning to LDH was studied by the hydration reaction. It is shown that the 'memory effect' is not complete, and the decreases of the Mg/Al molar ratio of LDH and the crystallite size due to the increase of the hydration reaction time result in the drop of the activity and the selectivity. | JIAO Qing ze, ZHAO Yun, ZHANG Yi qing, Evans D. G. and DUAN Xue ** The Key Laboratory of Science and Technology of Controllable Chemical Reactions,Ministry of Eduction, Beijing University of Chemical Technology, Beijing 100029, P. R. ChinaZHOU Zi | 2002 | Chemical Research in Chinese Universities2002，18，2： | 0 |
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