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| 1 | MATHEMATICAL MODELING OF INITIAL SOLIDIFICATION IN CONTIN UOUS CASTING显示文摘Many mathematical modelshavebeen developed sofar, butthereisstill much tobe donefor mathematical modelingin thefield of initialsolidification. This paper reviewsthe mecha nism of irregular solidification and mathematical modeling of irregular solidification andlongitudinalcrackformation. Main responsiblefactorsforirregularsolidification areconsid eredtobe nucleationofsolid phaseonthe moldsurfaceandshelldeflection duetothermalcon traction ofshell. Someofrecent worksonshellirregularity andcrackformation arepresented including a new model of shell irregularity, in which heat flow and shell deflection are linked in the calculation, and a strain model which takes account of frictional forcein the transverse direction. In orderto develop a quantitative modelto predictlongitudinalcrack, fartherstudy willbeexpected in revising and linkingthese models. | S.Ogibayashi Chiba Institute of Technology ,DepartmentofIndustrialand Management Systems Engineering,2 17 1 Tsudanu ma, Narashino shi,Chiba ken ,Japan ,275 0016 | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，4： | 2 |
| 2 | Immunohistochemical expression of Hsp60 cor- relates with tumor progression and hormone resistance in pros- tate cancer显示文摘 | Castilla C Congregado B Conde JM Medina R Torrubia F J Japan MA | 2010 | Urology2010，76，4： | 1 |
| 3 | STUDY ON PREPARATION OF UNIFORM POLYSTYRENE HOLLOW PARTICLES显示文摘Uniform polystyrene hollow particles were prepared successfully by employing SPG (Shirasu porous glass) emulsification technique. The oil phase composed of monomer [styrene (St) and N,N’-dimethylamino ethylmethacrylate (DMAEMA)], hexadecane (HD) and initiator was permeated through the uniform pores of SPG membrane into the aqueous phase (containing stabilizer, emulsifier and water-soluble inhibitor ) by a gas pressure to form uniform droplets. The droplets were then polymerized at 70℃. It was found that the hollow particles were obtained by adding a small amount of DMAEMA into the oil phase and by using NaNo2 as the water-soluble inhibitor, while only one-hole particles were obtained without adding DMAEMA, or when using diaminophenylene (DAP) or hydroquinone (HQ) as the inhibitor. The formation mechanism was discussed by the view of interfacial tensions between polymer and aqueous phase, HD and aqueous phase, and HD and polymer. Further more, it was found that hollow particles can be obtained even when DMAEMA content in the oil phase was very low, by increasing HD to high value. | Ma Guanghui and Omi Shinzo (Tokyo University of Agriculture and Technology, Nakamachi 2-24-16, Koganei, Tokyo 184-8588, Japan) | 2000 | 化工学报2000，51，S1： | 0 |
| 4 | Lunar Occultations Observed in Japan and Lunar Limb Profiles Derived显示文摘Lunar occultation observations are useful in refining lunar limb profiles, which will be used for the analysis of solar eclipse observations to detect the variation of the solar diameter, and in detecting the possible errors of the Hipparcos proper motion system. Many lunar occultations have been observed in Japan. Some of the results are shown in this paper to encourage people in the world to observe more lunar occultations with better accuracies. | Mitsuru Sma (National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan, e-mail: somamt@cc. nao. ac. jp) | 1999 | 天文研究与技术1999，，S1： | 0 |
| 5 | Relative Damage Stress: Dominant Mechanical Factor for the Failure of Soldered Joints under Temperature Cycling显示文摘By temperature normalization of the concept of equivalent damage stress proposed by Lemaitre, a new concept of relative damage stress has been put forward as the dominant mechanical factor for the failure of soldered joints under temperature cycling. Finite element numerical simulation results showed that the highest value of relative damage stress occurred at the high temperature hold time during temperature cycling history. | Xin MA Yiyu QIAN and Hongyuan FANG National Key Laboratory of Welding, Harbin institute of TechnologY, Harbin 150001, China F. Yoshida Department of Mechanical Engineering, Hiroshima University, Higashi-Hiroshima 739, Japan | 2001 | Journal of Materials Science & Technology2001，17，1： | 0 |
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