查询词典 D.D.

D-galactoside galactohydrolase (EC3.2.1.23) is usually named lactase which can hydrolyze lactose into galactose and glucose, and also can transfer galactoside.

半乳糖苷酶(B-D-半乳糖苷半乳糖水解酶，β-D-galactoside galactohydrolase，EC3.2.1.23)通常被称为乳糖酶，能将乳糖水解为半乳糖和葡萄糖，并具有半乳糖苷的转移作用。

A novel carbonyl transposition led by anilines'nucleophilic addition to methyl 2-keto α-D-glucopyranoside was discovered. And the mechanism of the reaction concerned to an enol rearrangment was provided through tracing the change of 〓H-NMR and 〓C-NMR of a hemiacetal intermediate which was obtained in the reaction of o-phenylene diamine with 2-keto glycoside. Both the intermediate and the converting product were identified by 〓H-NMR,〓C-NMR,〓H-〓H COSY and HMQC.

一、发现了2-位氧化α-甲基D-葡萄糖苷的芳胺亲核加成引起羰基转位的新方法，利用核磁共振氢谱及碳谱对邻苯二胺与2-位氧化α-甲基D-葡萄糖苷加成生成的稳定中间体半缩酮化合物在氘代丙酮中的变化进行跟踪，结合对转化产物的氢氢相关谱和HMQC结构确证，提出了该反应中2-位羰基通过烯醇化互变而转至3-位的机理并得到了验证。

And 9. 21 ×l0〓, respectively. Biotransformation of 6 hydantoin derivatives were carried out using D-hydantoinase genetic engineering strain E. coli BL21/pMD-T〓-dht resting cells.

本文还比较了D-海因酶基因工程菌E.coli BL21／pMD-T〓-dht细胞对6种海因类衍生物的转化情况，对利用这条海因路线制备其它D-氨基酸进行了初步探索。

Inclusion body was dissolved using 6M guanidine hydrochloride/2M hydrogen chloride and adding cyanogen bromide to solution Expression production was removed N terminal fusion protein AMP-A/B/C/D antibacterial activity was detected.

实验结果发现AMP-A没有抑菌活性；AMP-B/C/D均表现出广谱的抗菌活性，它们的最小抑菌浓度约为9μM，其中AMP-C对革兰氏阴性菌的抑菌效果最强，AMP-D抗菌广谱性较AMP-B/C差。

2 Presser Foot, Types A, B, C, D, DO, E, O, OO, OOO, and OOO-S, with an orifice (to allow for the protrusion of the indentor) having a diameter as specified in Fig.

A型，B型，C型，D型，DO型，E型，O型，OO型，OOO型，OOO-S型的压足和配合孔的尺寸见FIG.1（a，b，c，d，e，f和g）的规定，压足中心与测量试样任意边缘最小距离为6.0mm（0.24in），当压足设计成圆形平面时，它的的面积不应小于500mm2 19.7in2

In the data acquisition system, CD4051 and AD574- the A/D transform, are used as hard core to receive the signal from the infra-red ray temperature sensor; the data acquisition depend on CPU; in the keyboard/ display system, a 74LS48 as the driver to drive LED works; in the warning circuit, I used two color LED and a buzzer as one unit to work; DAC0832 converter is the center of the D/A transform; execution unit, I used DDZIII type electromotive unit; the auto-man, it is a disabling of the other control circuit, this can secure production all the time.

在数据采集部分，以多路开关CD4051和AD574模/数转换器为核心接收来自红外线传感器的信号；数据处理依赖CPU；键盘/显示部分，以74LS48驱动LED数码管工作；报警单元，采用了双色LED加蜂鸣器的组合；D/A转换采用了DAC0832转换器；执行器采用DDZIII型电动执行器；手/自动切换装置则屏蔽了之前的电器部分，安全可靠。

The results showed that callus started forming at root segments from buds of potato cultivar: Ingush No.5 and Ingush No.8 in greenhouse cultured 45d after placement on culture medium: MS+2,4-D 2mg/L+BAP 3mg/L+NAA 0.5mg/L+sucrose 30g/L+agar 7g/L and diffused light.

结果表明，青薯5号和青薯8号温室生长幼芽根组织接种MS+2，4-D 2mg/L+BAP 3mg/L+NAA 0.5mg/L+蔗糖30g/L+琼脂7g/L培养基上散光条件下培养45~90d产生愈伤组织，诱导率为0.024%；青薯5号愈伤组织接种1/2MS+2，4-D 0.5mg/L+BAP 2mg/L+KT 2mg/L+GA30.5mg/L+ZT0.2mg/L+蔗糖20g/L+琼脂7g/L培养基上培养80d分化出再生植株，分化率为6.25%，再生植株切成一叶茎段接种于MS+BAP 0.1mg/L+IAA 10mg/L+GA30.1mg/L+白糖30g/L+琼脂6g/L培养基上培养3周长成株高8~10 cm、叶7~10片、叶色深绿和根系发达的小植株。

The mechanism to form HD+2,H+3 and D+3 from RF ion source is analyzed by experimental study of the interaction of these ions with solid foils. The structural pattern of HD+2 and the mean internuclear separations are determined using the Coulomb explosion technique.

从分子离子H+3及其氘化同位素分子离子D+3和HD+2与超薄固体膜相互作用发生库仑爆炸为基础，分析讨论了H+3，D+3和HD+2三种分子离子的形成机理，根据产物能谱分布，利用库仑爆炸技术确定了同位素分子离子HD+2的结构形式，给出具体核间距数值。

In the development of the home's inside receive/send controller , the two level interrupt receive device , which was compose of interrupt controller , was adopted to realize the home's digital signals' collection , the A/D converter was adopted to realize the home's digital signals' collection . The A/D converter was adopted to realize the home's analog signals' collection .

在家庭智能化内部收发控制器的设计中，采用中断控制器组成二级中断接收装置实现对家庭数字信号的采集，采用A/D转换器实现对家庭模拟信号的采集，采用译码器实现对数字信号的传出。

After 20 d calcium induction, jacinth calcium salts could be detected in the cells by alizarin red staining.At day 10 after being adipoinduced, the cells showed positive oil red O staining.

结果：成功获得了稳定表达GFP的ADSCs，GFPADSC经成骨诱导20 d后茜素红染色可见有橘红色钙盐沉积；经成脂诱导10 d后油红O染色阳性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。