In this paper, the new cyclic quaternary ammonium salt DCAS was designed and synthesized.

Dcas features a method of using identities as rules to manipulate algebraic expressions.

Dcas突出体现了一种使用标识作为规则来操作代数表达式的方法。

Design and Practice of the Design Change Automatic Solution DCAS

设计变更自动化解决方案DCAS的设计与实践

As one of the main precursor of poly ( phenylene sulfide amide), 4 chloro N ( 4 ′ chlorophenyl) benzamide ( DCBA) of high purity was two step synthesized from 4 chlorobenzoic acid and 4 chloroaniline with good yield.

以对氯苯甲酸和对氯苯胺为主要原料，高产率获得了4－氯－N－（4′－氯亚苯基）苯甲酰胺（简称DCBA）。

I am glad you are here, because without you, DCBA would be an effective communication channel.

我很高兴在这里看到你们，因为没有你们，底特律中华商会就不成为有效的交流渠道。

Materials and Methods DCBE was performed in 84 cases with hematochezia and suspicious of colonic polyp, of which 46 cases underwent colonoscopy for further confirmation or therapy.

材料与方法对84例疑诊大肠息肉便血患儿行结肠气钡双重造影且对其中46例作纤维肠镜诊治对照。

Objective To sum up the technique of double contrast barium enema ( DCBE) for children's colonic polyp, and to evaluate DCBE in its diagnosis.

目的总结结肠气钡双重造影在小儿大肠息肉中的应用方法并评价诊断价值。

Then the DCBF algorithm is described in detail, with the correctness of DCBF proved and the computing complexity of DCBF analyzed. Finally an example is given.

详细描述了DCBF算法，证明了DCBF算法的正确性，分析了DCBF算法的计算复杂度，并给出了一个实例。

Objective To observe the differences in the polypeptide and active ingredient contents and biological activity between deproteinized calf serum injection ( DCSI) and deproteinized calf blood injection ( DCBI).

目的通过不同的原料和生化提取方法，制备了小牛血清去蛋白注射液（DCSI）和小牛血去蛋白注射液（DCBI），比较两者在主要成分、多肽含量、生物活性等方面的差异。

RESULTS Levels of blood glucose, ALT, AST in DCBI groups significantly decreased compared with control group, but level of liver glucose was significantly increased.

结果与对照组相比，小牛血去蛋白注射液实验组血葡萄糖含量显著降低，肝葡萄糖含量显著升高，血清ALT、AST显著降低。

The Protective Effects of DCBI on Experimental Hepatic Trauma

小牛血去蛋白注射液对鼠实验性肝脏外伤的保护作用

Serum total protein, albumin, glutamate pyruvate transaminase content if sheep which were fed DCBM were normal ( P> 0.05). DCBM did not damage to liver.

饲喂脱毒蓖麻粕组肉羊血清总蛋白、白蛋白含量均在正常范围内，血清谷丙转氨酶均低于30U/l，各组间差异不显著（P>0.05），说明脱毒蓖麻粕未对肉羊肝脏产生损害。

10%, 15% DCBM when were supplemented, sperm motility, density and abnormal sperm rate were significant than that in control group ( PO. Ol).

饲喂脱毒蓖麻粕对种羊精液品质有影响，添加10%、15%脱毒蓖麻粕组精子活率、精子密度、精子畸形率与对照组相比差异显著（P0.01）。

Digestible energy and metabolizable energy in supplementing 10%, 15% DCBM groups were lower than that in control group ( P < 0.05).

添加10%、15%脱毒蓖麻粕组消化能和代谢能与对照组差异显著（P<0.05）。

The PWM control of DC brushless motor ( DCBM) in warp of loom

无刷直流电机控制织机送经机构

Research on 160W Power Factor Corrector in DCBM Mode

DCBM模式160瓦功率因数校正器的研制

The model of competence substitution in the evolution of DCCC& Conditioned emergence model could be used in management of competence substitution process. It includes three stages: conditions for competence substitution, creating conditions states far from existing equilibrium, and managing feedback.

企业动态核心能力突现调节模型包括为更迭准备条件、创造远离平衡的条件、管理反馈过程三个阶段。

Objective To establish the dyslexia checklist for Chinese children ( DCCC), so as to provide a scientific and efficient diagnosis instrument for urban students with Chinese dyslexia.

目的编制一套适合中国学龄儿童使用的《儿童汉语阅读障碍量表》（DCCC，Dyslexia Checklist for Chinese Children），以便为城市学生制定一个科学、有效的汉语阅读障碍诊断工具。

Objective To examine the reliability and validity of Dyslexia Checklist for Chinese Children ( DCCC), and to provide instrument for clinical diagnosis.

目的检验《儿童汉语阅读障碍量表》（DCCC，Dyslexia Checklist for Chinese Children）的信度与效度，为临床科研工作者诊断儿童阅读障碍提供有利工具。

Conclusion With its good reliability and validity, the DCCC is an ideal rating scale for children with Chinese dyslexia.

结论《儿童汉语阅读障碍量表》具备较好的信、效度，是一种良好的儿童汉语阅读障碍诊断工具。

Proton uptake of chloroplasts and the fluorescence quenching of 9_aminoacridine ( 9_AA) in thylakoid membrane decreased after the thermal pretreatment, but addition of dicyclohexylcarbodiimide ( DCCD) could partially restore the fluorescence quenching of 9_AA.

叶绿体的9氨基吖啶（9AA）荧光猝灭减弱，但加二环己基碳二亚胺（DCCD）可以部分恢复9AA荧光猝灭。