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Mochida, A.,Tominaga, Y.,Murakami, S.,Yoshie, R.,Ishihara, T.,Ooka, R. Techno-Press 2002 Wind and Structures, An International Journal (WAS Vol.5 No.2
Recently, the prediction of wind environment around a building using Computational Fluid Dynamics (CFD) technique comes to be carried out at the practical design stage. However, there have been very few studies which examined the accuracy of CFD prediction of flow around a high-rise building including the velocity distribution at pedestrian level. The working group for CFD prediction of wind environment around building, which consists of researchers from several universities and private companies, was organized in the Architectural Institute of Japan (AIJ) considering such a background. At the first stage of the project, the working group planned to carry out the cross comparison of CFD results of flow around a high rise building by various numerical methods, in order to clarify the major factors which affect prediction accuracy. This paper presents the results of this comparison.
Taiana G.M. Bonadio,Valdirlei F. Freitas,T^ania T. Tominaga,Ricardo Y. Miyahara,Jaciele M. Rosso,Luiz F. C otica,Mauro L. Baesso,Wilson R. Weinandb,,Ivair A. Santos,Ruyan Guo,Amar S. Bhalla 한국물리학회 2017 Current Applied Physics Vol.17 No.5
Bioactive ferroelectric composites based on polyvinylidene fluoride, hydroxyapatite and b-tricalcium phosphate have been synthesized and their structural, microstructural, bioactive, and ferroelectric properties are characterized. Structural and FTIR investigations showed the presence of the polar polyvinylidene fluoride (b2) phase, while ferroelectric characterizations revealed remnant polarizations and coercive field, around 0.04 mC/cm2 and 28 kV/cm, respectively, for these biocompatible samples. Structural and microstructural analysis of samples previously immersed in simulated body fluid for 7 days revealed a large apatite phase growth (1.45 mm) on the composites' surfaces as a strong indication of their elevated bioactivity and potentialities for bone tissue engineering.
C. Yamazaki,E. Ikawa,I. Tominaga,T. Saito,I. Uchiki,Y. Takami,S. Yamada 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
A 3 ㎿-class high-precision IGBT chopper type power supply was developed for the bending electromagnets of the Heavy-Ion Facility at Gunma University. The current ripple was smaller than ±1×10??, and the current tracking error was smaller than ±1×10?⁴. Heavy ion beams were successfully accelerated with this power supply, and medical treatment commenced on 16th March 2010.