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The effects of the surfactants, trioctyl phosphine oxide, sodium dodecyl sulfonate and hexadecyl trimethyl ammonium bromide, on the extraction rate of Co^2^+ were investigated. The acceleration in the kinetics in contributed to the associated molecule~2 TOPO taking part in the extraction process directly. The decrement effects of SDS or CTMAB on the rate of extraction kinetics of Co^2^+ with HDEHP were also observed, which caused by the adsorption of molecules of SDS or CTMAB on the interface and decreased the interfacial adsorption amount of HDEHP. In addition, the extraction rate was reduced by a bigger margin in HDEHP-SDS system. This can be explained in terms of the formation of an electric field at the interface.

研究体系中加入不同表面活性剂所引起萃取速率的不同改变:三辛基氧化膦因与HDEHP形成可萃取的Co^2^+活性分子缔合物,降低了萃取过程活化能而使反应加速;十二烷基磺酸钠和十六烷基三甲基溴化铵因占据发生萃取反应的界面区,减小了HDEHP与Co^2^+反应的机会而使反应减速; SDS还因其在界面形成较强的负电场,造成Co^2^+的附加势能而使萃取速率有更大幅度的降低。

The results show that the optimal parameters of esterification are as follows: 4% of SO42-/ZrO2, molar ratio of methanol to litsea cubeba kernel oil 101, 68 ℃ of reaction temperature and 4 h of reaction time, the acid value decreases to 2.52 mg/g. Compared with the traditional acidic-catalyzed method, this method has the advantages of no acid proof equipment, easy to recycle catalyst and no acidic waste water emission. The optimal parameters of transesterification are as follows: 25 ℃ of reaction temperature, 0.5% of hexadecyl-trimethyl-ammonium bromide, 1% of NaOH, molar ratio of methanol to the oil 61 and 15 min of reaction time. The ester exchanging rate is 97.6%. This method adopts phase transfer catalyst and produces industry prospect, which has many advantages such as energy-saving and time-saving under room temperature.

研究结果表明,固体酸SO42-/ZrO2催化酯化反应的最佳条件为:油重4%的SO42-/ZrO2,醇油摩尔比为101,温度为68 ℃,反应时间为4 h,原油酸值降到2.52 mg/g;该法相对浓硫酸催化酯化法具有不需耐酸设备、催化剂易回收、无废水排放等优点;相转移催化酯交换反应的最佳条件为:温度为 25 ℃,0.5%的十六烷基三甲基溴化铵,油重1%的NaOH,醇油摩尔比为61,反应15 min,原油酯交换率达到97.6%;采用相转移催化技术,反应在常温下进行,大大减少了能耗,缩短了反应时间,具有的产业化前景。

About tetra-n-butyl ammonium polyiodides: triiodide and pentaiodide anions are the basic building blocks; heptaiodide anion and undecaiodide anion are composed by triiodide anion, and nonaiodide anion is composed by pentaiodide anion. Therefore the character of triiodide, heptaiodide and undecaiodide polyiodides is similar, and that of pentaiodide and nonaiodide polyiodides is similar.

正四丁基多碘化铵化合物中:碘三离子和碘五离子是基本的结构单元,碘七离子和碘十一离子是由碘三离子构成的,碘九离子是由碘五离子构成的,所以碘三、碘七和碘十一形式的高聚碘具有相似的性质,碘五和碘九形式的高聚碘具有相似的性质。

The electric conductivity of solid polyiodides increases largely as the aggrandizement of polyiodide anions"polymerization degree. The solid polyiodides have excellent sterilizing effects and the effect of tetra-n-butyl ammonium undecaiodide is the best of them, and the sterilizing effects increase as the aggrandizement of polyiodide anions" polymerization degree. The sterilizing effects of resinic polyiodides increase as the aggrandizement of polyiodide anions polymerization degree, the heptaiodide resinic polyiodide has better sterilizing effects than the triiodide and pentaiodide.

固体高聚碘系列化合物的电导率随着高聚碘阴离子聚合度的增加而增加,并且增幅较大;固体高聚碘对常见细菌均具有很好的杀灭作用,并且随着高聚碘阴离子聚合度的增加,杀菌能力也随着增强,其中正四丁基十一碘化铵杀菌剂的效果最佳;树脂高聚碘随着高聚碘阴离子聚合度的增加,杀菌能力增强,碘七树脂高聚碘的杀菌效果要明显好于碘三树脂和碘五树脂高聚碘。

The graft polymerization of acrylonitrile on Crosslinked polyvinyl alcohol microspheres CPVA microspheres was performed by using cerium ammonium sulfate as initiator, and grafted microspheres CPVA-g-PAN were prepared. Subsequently, the grafted PAN was converted into poly via amidoximation reaction with hydroxylamine hydrochloride as reagent, resulting in the functional microspheres CPVA-g-PAO. The chemical structure and physicochemistry characters were adequately characterized with infrared spectrum, scanning electron microscope and determining Zeta potential. The effects of main factors on the amidoximation transform reaction of the grafted PAN were researched with emphasis, and the adsorption property of the functional microspheres CPVA-g-PAO for some biomolecules was examined preliminarily with uric acid as a model biomolecule.

以硫酸铈铵为引发剂,实施了丙烯腈在交联聚乙烯醇微球表面的接枝聚合,制备了接枝微球CPVA-g-PAN,然后以盐酸羟胺为试剂,通过偕胺肟化转变,将接枝的PAN转变为聚偕胺肟,制得了接枝有聚偕胺肟的功能微球CPVA-g-PAO,采用红外光谱法、扫描电子显微镜及Zeta电位测定等法,对功能微球CPVA-g-PAO的化学结构及物理化学特性进行了表征,重点考察了各主要因素对接枝PAN的偕胺肟化转变反应的影响,也以脲酸为模型分子,初探了功能微球CPVA-g-PAO对生物分子的吸附性能。

Theresults showed that certainly licorice zinc can remit the toxic-side effect ofCa-DTPA in respect of rat's body weight,exterior appearance,ranal injuryand deficiency of necessary trace elements such as Zn,Mn,Cu;that thetoxic-side effects of Ca-DTPA actually are relative to losing some necessarrtrace element...

两组动物各有一半在给药期间每日口服0.6g 甘草锌。同时,还分别用甘草铵和 ZnSO_4做比较实验。结果表明甘草锌确能减轻 Ca-DTPA 对大鼠体重、外观、肾脏病变和微量元素含量的不良影响。比较实验的结果表明,Ca-DTPA 的毒副作用实际上是与微量元素 Zn的丢失相关,而甘草锌的缓解效果主要是通过补锌达到的。

The results showed: 1 RN didn't the leaf width,leaf long,leaf area,yield,productive value and average price of flue-cured tobacco,but had significant effect on grad composing,content of chemical component and the accumulation of N,K and Cl.Within limited rang of RN,the relations between yield,average price,yield of high grad tobacco,yield of low grad tobacco,nicotin,N,reducing sugar,Cl,amylum,volatile base and the quotient of ammonium would been described by significant quadratic polynomial,and the relations between K and the quotient of ammonium conformed to negative linear equation;2With a RN of 75%∶25%,the value of proportion of high and middle grad tobacco,content of nicotin,N,K,uptake of N and K/Cl were the highest,volatile base was lowest.

结果表明:1RN对烤烟的农艺性状、产量、产值、均价等没有明显影响,而对烤烟的等级结构、内在化学成分含量、氮、钾、氯的吸收量有着显著影响,可以用显著的二次多项式模型或直线相关方程描述产值、均价、上等烟产量、下等烟产量等经济性状以及烟碱、总氮、钾、还原糖、氯、淀粉、挥发碱等内在化学成分的含量与铵态氮份额之间的关系;2RN为75%∶25%时,中上等烟比例、烟碱、总氮、钾、钾氯比、氮吸收量最高,挥发碱含量最低。

The influence of CFC-12 content, effect of fluorination temperature and fluorinating time on the structure and hydrodesulfurization activity of the catalysts were examined systematically. The results revealed that hydrodesulfurization activity of the catalyst fluorinated by 1% CFC-12 at 623 K was obviously improved With an increase of 20%-30% as compared With that of the unfluorinated catalyst, the commercially available BY2 catalyst, and NH4F-fluorinated catalysts.

通过对0.5%~7%各种氟里昂浓度和473~773K各种温度及不同时间氟化处理的样品进行详细考察,发现在623K下由含氟里昂1%的湿空气氟化的载体制备的催化剂样品,其噻吩的加氢脱硫的活性有明显改善,相对於非氟化样品、BY-2工业催化剂以及氟化铵溶液浸渍处理的催化剂活性提高20%~30%,且非常稳定。

The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics-like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic; The empirio-equations of soil water retention curve including temperature and the empirio-equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better.

本文以水热耦合效应为主题,基于研究对象的动态变化特征,应用化学动力学原理,建立了含水、热因子以及水热耦合效应的土壤水分蒸发、肥料氨挥发动力学方程,以及施入土壤中的尿素转化为铵态氮的动力学型方程;为使水势—含水量关系式更好适应变温条件应用的要求,建立了含温度因子直接表征土壤持水曲线的经验方程,以及含温度因子的谷苗叶水势与土壤含水量关系经验方程。

The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics-like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic; The empirio-equations of soil water retention curve including temperature and the empirio-equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better.

本文以水热耦合效应为主题,基于研究对象的动态变化特征,应用化学动力学原理,建立了含水、热因子以及水热耦合效应的土壤水分蒸发、肥料氨挥发动力学方程,以及施入土壤中的尿素转化为铵态氮的动力学型方程;为使水势—含水量关系式更好适应变温条件应用的要求,建立了含温度因子直接表征土壤持(来源:A9eBC7b4b论文网www.abclunwen.com)水曲线的经验方程,以及含温度因子的谷苗叶水势与土壤含水量关系经验方程。

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Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

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