Process for the preparation of L-tryptophan
    82.
    发明授权
    Process for the preparation of L-tryptophan 失效
    L-色氨酸的制备方法

    公开(公告)号:US4742007A

    公开(公告)日:1988-05-03

    申请号:US702560

    申请日:1985-02-15

    IPC分类号: C12P13/22 C12R1/15 C12N1/20

    摘要: L-tryptophan can be prepared in good yield by a fermentation process which comprises culturing a novel L-tryptophan-producing microorganism of the genus Corynebacterium, which is resistant to at least one member selected from glyphosate [N-phosphonomethyl glycine], paraquat [1,1'-dimethyl-4,4'-bispyridinium] and derivatives thereof, and recovering L-tryptophan from the culture broth.

    摘要翻译: 可以通过发酵方法以良好的产率制备L-色氨酸,其包括培养棒状杆菌属的新型L-色氨酸生产微生物,其对选自草甘膦[N-膦酰基甲基甘氨酸],百草枯[1 ,1'-二甲基-4,4'-二吡啶鎓]及其衍生物,并从培养液中回收L-色氨酸。

    Semiconductor device having hetero junction
    90.
    发明授权
    Semiconductor device having hetero junction 有权
    具有异质结的半导体器件

    公开(公告)号:US08299498B2

    公开(公告)日:2012-10-30

    申请号:US12595253

    申请日:2008-04-07

    IPC分类号: H01L29/66

    摘要: A semiconductor device 10 is provided with a first hetero junction 40b configured with two types of nitride semiconductors having different bandgap energy from each other, a second hetero junction 50b configured with two types of nitride semiconductors having different bandgap energy from each other, and a gate electrode 58 facing the second hetero junction 50b. The second hetero junction 50b is configured to be electrically connected to the first hetero junction 40b. The first hetero junction 40b is a c-plane and the second hetero junction 50b is either an a-plane or an m-plane.

    摘要翻译: 半导体器件10设置有由彼此具有不同带隙能量的两种类型的氮化物半导体构成的第一异质结40b,由具有彼此具有不同带隙能量的两种类型的氮化物半导体构成的第二异质结50b,以及栅极 电极58面对第二异质结50b。 第二异质结50b被配置为电连接到第一异质结40b。 第一异质结40b是c面,第二异质结50b是a面或m面。