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    • 5. 发明授权
    • Process for the preparation of optically active N-benzyl-3-pyrrolidinol
    • 制备光学活性N-苄基-3-吡咯烷醇的方法
    • US06214610B1
    • 2001-04-10
    • US09308754
    • 1999-06-28
    • Yoshihiko YasoharaJunzo Hasegawa
    • Yoshihiko YasoharaJunzo Hasegawa
    • C12D1710
    • C12P17/10
    • The invention provides an efficient method of producing optically active N-benzyl-3-pyrrolidinol by an enzymatic reaction stereoselectively reducing N-benzyl-3-pyrrolidinone. The invention consists in a method of producing optically active N-benzyl-3-pyrrolidinol which comprises a step of obtaining a reaction mixture by treating N-benzyl-3-pyrrolidinone with cells or a culture of a microorganism, or a material derived therefrom, and a step of recovering optically active N-benzyl-3-pyrrolidinol from said reaction mixture, in which method said microorganism mentioned above is a microorganism belonging to the genus Dipodascus, Debaryomyces, Cryptococcus, Pichia, Rhodosporidium, Trichosporon, Micrococcus, Komagataella, Ogataea or Zygosaccharomyces.
    • 本发明提供了一种通过立体选择性还原N-苄基-3-吡咯烷酮的酶反应产生光学活性N-苄基-3-吡咯烷醇的有效方法。本发明涉及一种光学活性N-苄基-3-吡咯烷醇的制备方法,其包括 通过用细胞或微生物培养物或其衍生物处理N-苄基-3-吡咯烷酮得到反应混合物的步骤和从所述反应混合物中回收旋光性N-苄基-3-吡咯烷醇的步骤, 上述微生物是这样的微生物,属于Dipodascus,Debaryomyces,Cryptococcus,Pichia,Rhodosporidium,Trichosporon,Micrococcus,Komagataella,Ogataea或Zygosaccharomyromyces属的微生物。
    • 10. 发明授权
    • Silver weight unevenness correcting apparatus
    • 银重量不均匀校正装置
    • US4266324A
    • 1981-05-12
    • US107571
    • 1979-12-27
    • Junzo HasegawaSusumu KawabataHiroshi NiimiYasuhiko SuzukiMasaki AkatsukaTakahiko Tsunekawa
    • Junzo HasegawaSusumu KawabataHiroshi NiimiYasuhiko SuzukiMasaki AkatsukaTakahiko Tsunekawa
    • D01H5/42D01H5/38
    • D01H5/42
    • Sliver weight unevenness correcting apparatus of a feed-forward type has: a sliver weight measuring section for detecting the variations in weight of a bundle of slivers; a correcting draft device having front rollers disposed downstream of the sliver weight measuring section relative to the direction of advancement of slivers, the front rollers being rotated at a constant speed, and back rollers disposed between the sliver weight measuring section and the front rollers, the back rollers being rotated at a variable speed; a rotation detector for detecting the number of revolutions of the front rollers; an unevenness correcting circuit having a ratio circuit for operating a ratio (E.sub.0 /E.sub.1) between a reference sliver weight (E.sub.0) and the detected weight (E.sub.1) thereof, a delay circuit for delaying the speed control of the back rollers of the correcting draft device for a predetermined period of time, and a contrasting operational circuit for multiplying the ratio (E.sub.0 /E.sub.1) and a ratio (N.sub.F /k) between the number (N.sub.F) of revolutions of the front rollers and a reference draft value (k) and for producing a multiplied signal (E.sub.0 /E.sub.1 .multidot. N.sub.F /k); and a speed control circuit for producing a speed control signal responsive to the multiplied signal to control the speed of back rollers through a rotation transmitting mechanism. This arrangement enables accurate correction of sliver weight unevenness even short in wavelength in a drawing frame running at a high speed.
    • 前馈式的条子重量不均匀性校正装置具有:条子重量测量部分,用于检测条束重量的变化; 校正牵伸装置,其具有相对于条子前进方向设置在条子重量测量部分的下游的前辊,前辊以恒定速度旋转,以及设置在条子重量测量部分和前辊之间的后辊, 后辊以可变速度旋转; 旋转检测器,用于检测前辊的转数; 不平坦校正电路,具有用于操作参考条子重量(E0)与检测到的重量(E1)之间的比率(E0 / E1)的比率电路,延迟电路,用于延迟校正纸张的后辊的速度控制 装置,以及用于将前轮的转数(NF)与参考吃水值(k)之比(E0 / E1)和比(NF / k)之比的对比运算电路, 并产生相乘信号(E0 / E1x NF / k); 以及速度控制电路,用于响应于相乘的信号产生速度控制信号,以通过旋转传递机构来控制后滚筒的速度。 这种布置使得能够精确地校正在高速运行的绘图框中甚至短波长的条子重量不均匀性。