阴离子的

The experimental result shows that the efficiency or breackthrough volume of resin is reduced if there are other general anions, triethanolamine and oil in the solution.

实验结果表明：溶液中存在的常量阴离子、三乙醇胺和机油等不同程度影响树脂的交换效率或降低树脂的工作交换容量。

In the second chapater, first-principles electronic structure calculations were performed to examine the reaction pathway and corresponding activation free energies for alkaline hydrolysis of representative phosphodiesters, including dimethyl phosphate, trimethylene phosphate, ethylene phosphate, and a simplified model of adenosine 3\', 5\'-phosphate.

第二章中主要应用量子化学从头计算方法研究了四种磷酸二酯—二甲基磷酸酯，乙撑磷酸酯，TMP阴离子及cAMP的模型化合物的碱性水解反应途径，并估算了各个反应的能垒和自由能能垒。

The inhibition mechanism of MoO42- was that MoO42- transformed the hydrate ferrous oxide deposition film from anions selective to cations selective,and the cathodic process of underscale local corrosion was suppressed when it migrated into OCC.Meanwhile, the migrated MoO42- resulted in increasing the impedance of the film on the substrate metal and so inhibited the anodic process of the corrosion reaction inside the OCC.

MoO42-的作用机制在于使水合氧化铁腐蚀膜由阴离子选择性变为阳离子选择性，H+可以从膜下扩散出去，而Cl-难以扩散到膜下富集，抑制了腐蚀反应的阴极过程；同时MoO42-迁入闭塞区后增大了电极表面膜层阻抗，抑制了腐蚀反应的阳极过程。

In order to reflect the catalyst deactivation during the oxidative polymerization and difference of the reactivity between monomer,the oligomer soluble in water,and the oligomer unsoluble in water,a new heterogeneous kinetic model was proposed according to Flory statistical theory.It was found that the polymerization rate estimated by the new model was consistent with the calculated data.

根据DMP氧化聚合过程中催化剂随时间延长而逐渐失活，不同种类的苯氧阴离子活性不同以及非均相聚合特点，提出了水介质中DMP氧化聚合动力学模型，并采用多元非线形回归计算得到模型参数，采用模型计算得到的聚合速率与实验测定值一致，证明所提出模型的正确性。

In this dissertation, the efforts were focused on design and synthesis of chiral tmsymmetrical urea, cholic acid and heteroaromatic molecular tweezers and their molecular recognition as well as enantioselective recognition. A series of useful and creative results have been obtained.Three new types of chiral molecular tweezers containing unsymmetrically disubstituted urea unit, four new types of chiral molecular tweezers based on steroid cholic acid and one type of heteroaromatic molecular tweezers involving multiple hydrogen-bonding site have been designed and synthesized.

本文致力于新型手性不对称脲、胆甾和芳杂环类分子钳受体的设计合成及其对阴离子、中性分子和手性分子的识别及对映选择性识别性能研究，取得了一系列具有重要学术意义与应用前景的创新性结果。

Cerium can relieve the decrease of soluble protein content,the accumulation of O_2 -· and MDA in roots and leaves of Vallisneria asiatica under stress of Cu 2+.

铈能减缓铜毒害导致的亚洲苦草根叶可溶性蛋白含量的下降及超氧阴离子(O2-·)、丙二醛的累积。

Conductivity of Polyoxyethylene/Poly (2-vinyl pyridine)Blend and Compatibilizing Effect of Lithium Perchlorate;2. Graft terpolymerization of polyoxyethylene macromer with acrylates;3. Then multiblock copolymers was obtained by condensing polyoxyethylene and poly(2 vinylpyridine)with dichloromethane in the presence of potassium hydroxide.

甲基萘锂作为引发剂利用阴离子聚合得到 2 乙烯基吡啶的遥爪双羟基低聚物(P2VP)，然后以二氯甲烷作偶联剂与聚环氧乙烷反应制备P2VP和PEO多嵌段共聚物，考察了反应时间对偶联反应的影响，并对共聚物进行了IR和1H NMR表征，由1H NMR谱的积分曲线得到了共聚物中PEO链段质量分数。

It was found that the PCCG of the derivative could be 31.32% when 3 g starch and 3 g maleic acid were initiated by both 0.009 85 mol/L Fe2+ and 4.412 mol/L H2O2 and copolymerized at 60 ℃ for 5 h.

将中性的淀粉转化为含羧基的阴离子型聚电解质，是赋予淀粉功能性而提升其价值的一种有效途径。

In the dehydrogenating process,the anionic A-T fragmentgradually changes its electronic configuration fromπ~* toσ~* state,like the singlebases adenine and thymine.

在脱氢过程中，阴离子A-T的碎片会逐渐改变它的低能电子组态，从π~*态转变到σ~*态，这种变化跟在单个碱基腺嘌呤和胸腺嘧啶的情况相似。

The anion has as follows 8 big benefit: Sterilize surpass the oxygen negative ion free radical but kill various pneogaster infectious disease bacterium; Dust removal makes air middle dust heavy getting together, suspension pellet the brute force is collected; Deodorization dislodges various the peculiar smell living , bad smell , improves a bag; Eliminate cigarette smoke fog , dust in wiping out air rapidly , completely eradicate the second-hand cigarette; The various deleterious chemistry volatilizes a gas , wipes out "the invisible killer " in getting rid of poison dislodging air; Work efficiency, removes health care rise becoming fagged , improve the heart-lung function, strengthen the human body immunocompetence; Improve the looks making an epithelium bring negative charge along , make germs lose the go at ability to the cell , keep skin glossy; Except that static electricity is positive static electricity in general in life, will be physically and mentally healthy to the human body bringing about hidden trouble, the anion has an effect to neutralize this static electricity.

负离子有如下8大好处：杀菌——超氧阴离子自由基可杀灭各种呼吸道传染病菌；除尘——使空气中尘埃聚沉，强力收集悬浮颗粒；除臭——去除各种生活异味、臭味，改善生活环境；消烟——快速消灭空气中的烟雾、尘埃，杜绝二手烟；去毒——去除空气中各种有毒化学挥发气体，消灭&隐形杀手&；保健——提高工效、消除疲劳，改善心肺功能，增强肌体免疫能力；美容——使上皮细胞带负电荷，使病菌失去对细胞的攻击能力，保持皮肤光滑；除静电——生活中一般为正的静电，会对人体身心健康带来隐患，负离子有效中和这种静电。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。