取代剂

Except for this, the others such as ionic bridge (e. g. Me〓, I〓), appositional replacement and destroying the binding site etc. is involved in also. 5. The type of BSA intrinsic fluorescence being quenched is mainly static quenching, and the nonradiative energy transfer is attributed to BSA intrinsic fluorescence being quenched also.

各种类型的外加剂对中药小分子-蛋白质作用过程的影响方式各不相同，与BSA结合引致BSA分子构象改变是外加剂参与并影响中药小分子-BSA相互作用过程的共通机制；除此共通机制外，还可能存在离子架桥、同位取代以及对BSA分子上药物结合部位的破坏等作用形式。

In ordcr to solve the problem of expcnsive aluminium type thermite currently used for ingot casting at Pangang's Steelmaking Plant,a new and cheap substitutional thermal insulation a-gent is developed.

针对攀钢炼钢厂模铸铝型发热剂价格高的问题，研制了一种新型价廉的绝热保温覆盖剂取代铝型发热剂。

The results reveal that the position, as well as the number, of sulfate substituent of S-b-CD plays an important role in the enantiomerization reaction of thioridazine.

此结果显示对掌异构物间的转换，与所使用特定的对掌选择剂有关，也意谓S-b-CD的硫酸根取代基位置与取代基数目在thioridazine的对掌异构化扮演著重要的角色。

The extraction equilibrium constants of Nd , Eu , Am in the system of seven monoacidic organophosphorus compounds dodecane 1. 0mol/l NO〓are reported. The dependency of the extractability on the PO〓function group、bonding charactor、metallic ion species and the structure of substitute has been examined.

给出了七个烷基磷酸的正十二烷熔液从1.0mol／lNO〓水溶液中萃取Nd、Eu、Am的平衡分配常数Kex，考察了萃取剂PO〓官能团、萃合物成键特性、金属离子及取代基结构与萃取性能间的关系，发现了：（1）可运用取代基自由能加和模型预测辛基膦酸辛基酯对La、Eu、Nd、Am等三价离子的平衡分配数据。

Fourteen new pyrethroids containing isoxazole were designed and synthesized from 4-isopropyl-3-substituted phenyl-5-hydroxyl isoxazoles as major material, whose structures were also characterized by IR, 1H NMR and elemental analysis.

以4-异丙基-3-取代苯基-5-羟基异噁唑和3-苯氧基苄基溴为原料，三乙胺为缚酸剂，设计并合成了14个未见报道的4-异丙基-3-取代苯基-5-异噁唑基-(3'-苯氧基)苄基醚。通过红外光谱、核磁共振、元素分析等手段，确证了它们的化学结构。

The aim of this study was to evaluate the possibility of dietary supplementation of probiotics, prebiotics and symbiotics in broiler to replace the antibiotic as growth promoter, by compare the growth performance and immune response.

中文摘要本研究之目的为评估肉鸡饲粮中添加益生菌、益生剂与合生剂对肉鸡生长性状与免疫反应之影响，并探讨其取代抗生素作为生长促进剂的可行性。

With regard to the current society, much hubbub in the European Union ban on the use of four kinds of children's toys, plasticizers, Jiangnan University, and Dr. LG Chemical in two epoxy esters, briefed the meeting on high molecular weight plasticizers, citrate butyl ester, such as trimellitic several environment-friendly non-toxic plasticizer that can be replaced ethylhexyl phthalate, ethylhexyl adipate, whether it is synthetic process, the source of raw materials are not a problem, but there are differences in price, but into the large-scale production, the price will be decreased substantially.

关于目前社会上闹得沸沸扬扬的欧盟禁止在儿童玩具中使用四种增塑剂，江南大学和LG化学的两位博士在会上介绍了环氧酯类高相对分子质量增塑剂、柠檬酸三丁酯、偏苯三酸酯等几种无毒环保型增塑剂，认为完全可以取代邻苯二甲酸乙基己酯、己二酸乙基己酯，无论是合成工艺、原料来源都不成问题，只是在价格上还有些差异，但进人大规模生产后，价格会有较大幅度下降。

In order to simply the method, we further propose using magnetic stirring with weighted ring in stead of argon sparging; using air-circulated incubator in stead of water bath for better observation and sample collection; using centrifuging in stead of filtration for extract pretreatment; using one phase of simplified bioaccessibility extraction method instead of the two-phase method for a better estimate to the in-vivo method.

爲进一步简化试验方法，建议将开放式反应槽改为密闭式；使用可调速磁力搅拌及具载重环磁石，取代昂贵之氩气搅拌；将水浴温控改为气控式，以利试验观察与采样。此外，小肠相萃取不使用吸附剂，萃取液前处理利用高速离心取代压阻较高之过滤方式。本研究二阶段试验之生物有效性皆低估动物试验RBF，建议可将二阶段胃肠体外试验方法改为单相一阶段生物有效性萃取(simplified bioaccessibility extraction， SBET)试验方法。

Biodegradability indicated by the value of BOD〓/COD was determined for aniline, seven substituted anlines, eleven extractants, and raffinates of anilines in this paper.

本文以BOD〓／COD作为评价有机物生物降解性的指标，分别对苯胺和七种取代苯胺、十一种常用萃取剂以及有机溶剂萃取后的取代苯胺水溶液的生物降解性进行了研究。

In a market economy, enterprises must attach great importance to technological progress, and to take practical actions to achieve universal adoption of concrete admixtures; scored with ribbed steel bars of variable cross-section to replace the glossy steel as the production of prestressed Concrete products and reinforced concrete products, reinforced; concrete mixing system to the early realization of microcomputer control; by roll welding machine to replace the hand-made steel skeleton of banding; centrifugal molding, product testing, as well as a phase of water pressure of the pressurized pipe to achieve the conservation process of automatic control ; vigorously promote energy conservation, etc.

在市场经济条件下，企业必须高度重视技术进步，并采取可行的措施，尽快实现普遍采用混凝土外加剂；用带肋刻痕的变截面钢筋取代光面钢筋作为生产预应力混凝土制品和钢筋混凝土制品的配筋；混凝土搅拌系统要尽早实现微机控制；用滚焊机取代手工绑扎制作钢筋骨架；离心成型、产品水压检验以及一阶段制管的加压养护过程实现自动控制；大力推广节能养护窑等等。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。