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( Masaru Murata ),( Toshiyuki Akazawa ),( Junichi Hino ),( Junichi Tazaki ),( Katsutoshi Ito ),( Makoto Arisue ),( Maxillofacial Surgery ) 조선대학교 치의학연구원 2011 Oral Biology Research (Oral Biol Res) Vol.35 No.1
The aim of this study was to evaluate the hard tissue-inductive capability by human decalcified dentin matrix (DDM) with or without recombinant human bone morphogenetic protein-2 (BMP-2). Human teeth were crushed, completely decalcified and freeze-dried. We named the material DDM. The shape of DDM was a particle type and its size varied from 0.4 to 0.8 mm. The hard tissue induction by 70 mg of DDM was estimated histologically in the nude mice subcutaneous tissue at 4 weeks after implantation. The DDM alone induced bone and cartilage, independently, in the back skin. In addition, the time-course of bone induction by BMP-2 (5.0 μg)/DDM (70 mg) was analyzed in the rat subcutaneous tissues. Histological findings showed that the BMP-2/DDM induced bone and marrow between the DDM particles. Calcium content in the BMP-2/DDMinduced tissue was compatible to the histological findings. The morphometric analysis demonstrated that the BMP-2/DDM showed 66.9%, 79.0% in the volume of bone and marrow, and 32.4%, 21.0% in that of DDM at 8, 32 weeks, respectively. These results indicate that human DDM particles are osteo-chondroinductive and absorbable matrics. Human DDM are effective biomaterials of BMP-2 delivering for bone engineering.
Takano, Hirotaka,Murata, Junichi,Yasuda, Makoto,Maki, Yukino The Korean Institute of Electrical Engineers 2013 The Journal of International Council on Electrical Vol.3 No.1
In this paper, an improvement strategy is proposed for solving a determination problem of the optimal distribution network configuration (minimum distribution loss network configuration). To achieve the purpose, characteristics of the network configuration optimization problems are clarified by applying an exact determination method previously proposed to typical problems. Second, those characteristics are used to evaluate the performance of Tabu Search (TS), which is the most popular local search-based metaheuristics, when applied to the problems. Finally, TS algorithm is improved. Numerical simulations are carried out for a real scale complicated network model in order to verify the validity of improved TS.
Anauto motive collision avoidance control based on a feasible set
Masakazu Mukai,Yuji Harada,Junichi Murata,Taketoshi Kawabe,Hikaru Nishira,Yoshitaka Deguchi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper considers an optimal path generation problem that generates a path of an automobile without any collision with obstacles. The problem is formulated as a mixed integer programming problem. In the problem the obstacles and environments a round the automobile can be represent as inequality conditions. A feasible set called collision avoidable set (CAS) is considered to constract a driver assisit control.