Y. Takasawa

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The establishment of cartilage regenerative medicine has been an important issue in the clinical field, because cartilage has the poor ability of self-repair. Currently, tissue engineering using autologous chondrocytes has risen, but we should investigate more appropriate cell sources that can be obtained without any quantitative limitation. In this study,(More)
1) Slices of calcium bilirubinate stones were readily soluble in bile added with tetrasodium salt of ethylene-diaminetetraacetic acid (EDTA.4Na). 2) Bile added with 3 agents, EDTA.4Na, ursodeoxycholate (Urso), and heparin could dissolve calcium bilirubinate stones more easily than, or comparably to, the bile added only with EDTA.4Na. 3) The pH of the bile(More)
A graphical procedure is presented to obtain an approximate solution to the minimization problem of the follwing form: Minimize the function $$\varphi (t_0 ,t_1 ,...,t_{n - 1} ,t_n ) = g(t_0 ,t_1 ) + g(t_1 ,t_2 ) + ... + g(t_{n - 1} ,t_n )$$ subject to the constraints $$t_0 \underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{ \leqslant } 0< t_1< t_2<(More)
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