阴离子

The more stable the anions formed by hydrolysis of the acid, the higher the acidity of the acid.

P50 酸在水中水解形成的阴离子越稳定，它的酸性就越强。

During the Great Proletarian Cultural Revolution, a "three-in-one" combination research group was organized from the workers, which formed the main-force, cadres and technical staffs of Silicen-Steel Sheet Works, Metallurgical Designing Institute and a research institute, for the recovery of sulphuric acid from the waste acid liquor of the steel works.

在无产阶级文化大革命中，由上海矽钢片厂、上海冶金设计院及中国科学院上海有机化学研究所组成的以工人为主体的工人、干部、科技人员三结合试验小组，对硅钢片酸洗废液通过用S-203强碱性阴离子交换膜扩散渗析法进行硫酸的回收，既节约物资，又改善环境，获得了较为满意的结果。

Activity coefficient shows the effect size of the microcosmic effects between ions and solvent.

活度系数反映了电解质溶液中阳、阴离子之间和离子与溶剂之间微观作用程度的大小。

OBJECTIVE To study the effects of aloe-emodin and emodin on scavenging superoxide anion free radical O(superscript – subscript 2 and hydroxy free radical.

目的：研究芦荟大黄素和芦荟素对超氧阴离子自由基O(上标–下标 2、羟自由基的清除作用。

Objective To study the effect of carbon disulfide (CS2) on pyrogallol-luminol auto-oxidation chemiluminescence system and production of superoxide anion.

简乐目的探讨二硫化碳（CS2）对邻苯三酚-鲁米诺自氧化化学发光体系以及对超氧阴离子产生的影响。

Methods The pyrogllol auto-oxidation was adopted to produce superoxide anion O(superscript - subscript 2; the system H2O2/Fe(superscript 2+) was used to produce hydroxy radical through Fenton reaction; and spectrophotometry was used to detect the clearing functions of drugs with different concentrations against O(superscript - subscript 2) and OH.

采用邻苯三酚自氧化法产生超氧阴离子自由基O(上标-下标 2，采用H2O2/Fe(上标 2+)体系通过Fenton反应产生羟自由基，用分光光度法分别测定不同浓度的药物对O(上标-下标 2)是和OH的清除作用。

Methods The methods of DPPH , pyrograllol auto-oxidation and salicylicl acid were used in order to get the scavenging quality of DPPH free radical , superoxide free radical O2-.

方法采用DPPH法、邻苯三酚自氧化法、水杨酸法，分别测定缬草醚酯提取物清除DPPH自由基、超氧阴离子自由基和羟自由基的能力。

Based on Fenton reaction and the auto-oxidation of pyrogallol, the anti-radical activity of morinda officinalis how was studied by spectrophotometry. The morinda officinalis how has obvious scavenging effects on hydroxyl radical and superoxide anion radicalO2(superscript - with the efficiency related to concentration of morinda officinalis how.

基於Fenton反应和抑制邻苯三酚自氧化原理，分光光度法测定体系吸光度的变化研究巴戟天抗自由基活性，证明巴戟天对羟自由基及超氧阴离子自由基O2(上标-均有良好的清除作用，清除率与巴戟天的浓度有一定的量效关系。

Antioxidative activity of flavonoids from Lespedeza bicolor were investigated by examining the scavenging effects on hydroxyl radicals and superoxide anion O2(superscript - and the inhibitions on auto-oxidation of lard, rape seed oil, and linoleic acid, The results showed that LBF had significant scavenging functions to free radical and superoxide anion, and the scavenging effect increased with the increase of the content of LBF; LEF can remarkably inhibit auto-oxidation of lard, rape seed oil, and linoleic acid, indicating its potential as a natural antioxidant.

通过二色胡枝子黄酮(Lespedeza bicolor flavonoids， LBF)清除羟自由基、超氧阴离子的效果及抑制猪油、菜油、和亚油酸的自氧化来研究二色胡枝子黄酮的抗氧化活性。其研究结果表明，二色胡枝子黄酮对清除自由基有显著性作用，且清除率随黄酮浓度的增加而增大；能够极显著地抑制猪油、菜油、亚油酸的自氧化(P.01)，抑制作用随浓度的增大而增强。作为天然的抗氧化剂，二色胡枝子黄酮具有一定的开发利用价值。

Most of water-soluble cyanine dyes have -SO3H and –COOH in their molecules, which will influence the biomolecules' functional characters. A new kind of water-soluble cyanine dyes with several cations in molecules were designed and synthesized, preparation conditions of intermediate and dyes were researched and optimized, the yield of dye is 25%. The novel kind of cyanine dye are water-soluble , spectrum characters was researched , all the dyes were charactered by 1H NMR and TOF-MS, spectrum in different solvent of novel dyes were focused on, one of the kind dyes show higher fluorescence quantum yield than the result reported. Because of several cations in the structure, it is promising when used in DNA assay and other bio-assay field.

大多数水溶性的菁类荧光染料分子结构中都带有-SO3H和-COOH等基团，过多的阴离子的引入容易造成对生物分子的功能属性的影响，本论文设计并合成了分子结构中带有多个正电荷的水溶性的一类新型菁染料，考察并且研究了中间体和染料的合成条件，最终的目标产物产率达到25％，染料通过了质谱和核磁的表征，新型的染料具有良好的水溶性，研究了新染料在多种溶剂的的光谱性质，其中一种染料的在水中的荧光量子产率比文献报道得到了提高，由于富集了正电荷，这类菁染料在DNA标记等生物中有一定应用前景。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。