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- There existed both Lewis acid sites(Fe~(3+),Mo~(6+)) and Lewis base sites(oxygen of Mo=O and Mo-O-Fe bond) on the surface of the catalysts. 催化剂表面由Lewis碱位(MoO键的端氧和Fe-O-Mo键中的桥氧)及Lewis酸位构成。
- FePO 4 and AlPO 4 distribute at intervals, and there exist Lewis base sites (P=O and P-O-Fe) and Lewis acid sites (Fe 3+ and Al 3+) on the catalyst surface. FePO4 和AlPO4 间隔分布在催化剂表面 ;形成Lewis碱位 (P =O ;P O Fe)和Lewis酸位 (Fe3 + ;Al3 + ) .
- The experimental results pointed out that the three kinds of active sites exist on the surface of the catalysts: Metallic site Cu, Lewis acid sites V~(5+) and Ti~(4+), Lewis base sites bridge O in V-O-Ti and terminal O in V=O. 实验结果表明:在Cu/V2O5-TiO2催化剂表面存在金属位Cu、Lewis酸位V5+和Ti4+以及Lewis碱位V-O-Ti的桥氧和V=O的端氧三类活性中心;
- The chief type of acid base unbalance is respiratory acidosis. 酸碱失衡类型中 ,呼吸性酸中毒占首位 ;
- On the other hand, both Br? nsted and Lewis acid sites are observed on PW/USY catalysts. 由于PW与USY孔壁的弱相互作用，PW和USY的酸性中心得到保存，PW/USY催化剂的酸量较USY和PW有较大提高，其表面同时存在B（Br?nsted）酸和L（Lewis）酸中心。
- To optimize the process of prepartion isorotenone from rotenone by using Lewis acid AlCl3 as catalyst. 为了优化鱼藤酮异构化制备异鱼藤酮的工艺。采用三氯化铝催化下异构化。
- Potassium has an important role in the regulation of acid base balance. 钾在人体的酸碱平衡中起到了重要的作用。
- Trimethylsilyl cyclopropyl ethers can react with the silica gel to form the cyclopropanols when Lewis acid such as ZnX2 existed. 环丙烷基硅醚在卤化锌的作用下能够与硅胶反应生成环丙基醇。
- Researches in and application of Lewis acid,Bronsted acid,alkali, alkaline earth and molecular sieve catalysts were described in detail. 对采取烷基化法和酰基化法合成2,6-二烷基萘的工艺路线,尤其对所使用催化剂的研究进展进行了评述。
- The article discusses the base concept of SOAP protocol and the way it overcomes the limitation of current technology (CORBA and DCOM). 讨论了SOAP协议的基础，以及它克服现存技术（如CORBA和DCOM）的许多缺陷的方法。
- Researches in and application of Lewis acid, Bronsted acid, alkali, alkaline earth and molecular sieve catalysts were described in detail. 对采取烷基化法和酰基化法合成2,6-二烷基萘的工艺路线，尤其对所使用催化剂的研究进展进行了评述。
- The article mainly narrates the base concept and some rules of SOAP protocol, and discusses the advantage of it comparing with other protocol. 介绍了SOAP协议的基础和编码规则,并讨论其与现存网络协议相比有何优越性,最后给出一个基于SOAP协议的应用实例。
- Acetylation between alcohol and benzoyl oxide was carried out using ZnBr2 as a Lewis acid catalyst in solvent-free condition. Some structures were characterized by NMR and IR. 以溴化锌为催化剂，在无溶剂条件下实现了醇与苯甲酸酐的酰化反应，部分产物经NMR和ir表征。
- This paper expatiates on the base concept of COM reusability, and this topic focuses on the COM containment and aggregation technologies of software reusage. 阐述了COM可重用机制的基本概念,并着重论述其在软件重用方面的技术:COM包含和聚合。
- The results indicated that the composite oxide composition influences its acid characteristics that TS?1 has higher Br?nsted acid sites and TS?4 has higher Lewis acid sites. 实验结果表明;TS系列载体随组成不同;其酸性特征也不一样;TS 1具有较多的B酸位;而TS 4则具有较强的L酸.
- Abstrcat>This paper expatiates on the base concept of COM reusability, and this topic focuses on the COM containment and aggregation technologies of software reusage. 阐述了COM可重用机制的基本概念,并着重论述其在软件重用方面的技术:COM包含和聚合。
- The hydrolysis of phosphate experiences a bifunctional catalytic mechanism including double Lewis acid activation and intramolecular nucleophilic attack. 磷酸酷的水解经历了双Lewis酸活化和分子内亲核进攻的催化机理。
- This thesis firstly introduces the base concept of OO and the base concept of TMN, and then studies the function design of the TMN installation program. 本论文主要从面向对象的基本概念和电信网管系统的基本原理着手，探讨了电信网管软件安装程序功能设计和具体开发的问题。
- The acid base properties of fluorosilicone rubber(FSR) were studied by inverse gas chromatography(IGC) in detail. 采用反相气相色谱法对氟硅橡胶表面的酸碱性质进行表征。
- In this paper,the curing property of benzoxazine precursors based on bisphenols/Novolak resin,which were catalyzed by hexamine ,Oxalic acid,Lewis acid etc. 利用DSC、TGA等测试方法，研究了双酚型苯并恶嗪中间体（中间体）／线型酚醛树脂（线酚），在六次甲基四胺（六次）、草酸和路易斯酸作用下的固化性能以及固化物的热稳定性。
