<正> There has not been any report on crown other cyanine dyes up to now. The authors succeeded in synthesizing 2-methyl-5,6-(15 erown-5) benzothiazole (Ⅰ), th
<正> We have isolated a photodynamic pigment from the natural sources of Hypocrella bambusae (B. et Br.) sacc. (Hypocreaceae, Ascomycetes). The red pigment is s
<正> We denote by π(x) the characteristi function of the interval (0, 1), πk=h-1πx/h and π(?)(x)= h-1π(x/h-j)(0≤j≤n-1,h=n/1). For w∈EA, construct Rhu = (Rhw)f, where
<正> Tourmaline is a widespread boroalumino-silicate mineral in rocks of various origins.It is well known that tourmaline varies widely in composition, and can
<正> The class of holomorphic functions f(z)=z+a2z2+.... in the unit circle |z|<1 is denoted by N, and the family of convex functions of N is denoted by K. Let f(z