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When the pH is 1.00, column is longer than 8.0 cm, the flow rate of sample solution is lower than or equal to 1.0 mL·min-1 and elution rate with 0.1 mol·L-1 HCl-3% thiourea(40mL) is lower than or equal to 0.5 mL·min-1, Au, Ru, Pd, Pt and Rh can be quantitatively preconcentrated.

对贵金属通过离子交换柱的酸度、过柱流速、柱高、洗脱剂类型、洗脱剂用量和洗脱剂流速进行了系统的研究,找到了最佳条件,同时,还对该树脂的吸附性能和重复使用进行了研究。

The inhibition of propargyl alcohol for 1Cr18Ni9Ti stainless steel in hydrochloric acid solution is studied with the cyclic voltammetry and ellipsometry.

采用循环伏安法和椭圆偏振光谱法,研究了丙炔醇(Propargylalcohol,PA)对 1Cr18Ni9Ti不锈钢在含有氯离子的腐蚀环境中的缓蚀作用,实验表明Cl-能使 1Cr18Ni9Ti不锈钢发生点蚀,而缓蚀剂PA对不锈钢受到Cl-的腐蚀起抑制作用。

And influences of contamination on Sr isotope and LILEs are more evident than those on Nd isotope and REEs.

同化混染对Sr同位素和大离子亲石元素的影响程度大于对稀土元素和Nd同位素的影响程度。

Ion exclusion chromatography was used for the determination of organic acids in both beer and white wine with common HCl solution as an eluent and tetrabutylammoniun hydroxide as a regenerant.

研究了离子排斥色谱法分离测定啤酒和白葡萄酒中有机酸;选用常见的盐酸溶液作淋洗液,以四丁基氢氧化铵为再生液,考察了淋洗液浓度、流量等因素对分离和测定的影响,对啤酒和白葡萄酒中常见有机酸在阴离子排斥色谱柱上的保留行为进行了系统的研究;通过试验确定最佳的色谱条件为盐酸浓度1。

The crude PPG was purified with neutralization-absorption process and the experimental conditions of crystallization, decolor , dehydration and removement of metal irons were investigated respectively.

应用中和-吸附的工艺方法对聚醚进行精制,并且分别考察了结晶、脱色、脱水、脱金属离子等重要实验条件,讨论了使用不同的吸附剂,对聚醚精制效果产生的影响。

Dry etching technologies, especially RIE is described resumptively in this paper, more over, the mechanism and process technology of RIE is also expatiated.

本文对干法刻蚀技术作了概括的阐述,着重介绍反应离子刻蚀,并对其刻蚀机理及其刻蚀工艺作了详细论述。

The following results have been obtained: 1 Expression of SbNHX1 in E. coli enhanced Na+ and K+ tolerances, but not to others; 2 The sequence from 1353-1514bp in SbNHX1 gene played a role for SbNHX1 to Na+ and K+ tolerances; 3 The Na+/H+ antiporter of Salicornia Bigelovii Torr. catalysed Na+/H+ or K+/H+ exchange with equal affinity, which indicates that the SbNHX1 is more likely to locate on member of vacuolar, and responds to transport Na+ into the vacuole from cytoplasm.

证明了SbNHX1能抵抗Na+和K+的胁迫,但对其它盐离子没有抗性;2)证明了北美海蓬子Na+/H+逆向转运蛋白基因(SbNHX1)C末端从基因的C末端1353bp至1514bp的序列在耐盐中起一定的作用;3)证明了北美海蓬子Na+/H+逆向转运蛋白(SbNHX1)对Na+和K+交换的等亲和性,对于这一点,说明北美海蓬子Na+/H+逆向转运蛋白与定位于液泡膜上的Na+/H+逆向转运蛋白的功能相似。

Several main non-ionic surfactants (AEO、TX、SpanTweem、EL) was used to emulsify liquid paraffin and di octyl sebacate and the anti-coalescence stability of the corresponding emulsion was studied, the impact of the presence of benzene and double bond in lyophobic moiety of surfactant and its length and matching with dispersed phase upon the interfacial viscosity and Gibbs elasticity was analyzed.

本文采用了几种主要的非离子活性剂(AEO、TX、Span-Tween、EL)来乳化白油和癸二酸二辛酯,通过对各乳液体系抗聚并稳定性的考察,分析了活性剂亲油链段的长度、苯环和双键的存在、及亲油链段与被乳化对象分子结构的匹配关系对界面粘度和Gibbs弹性的影响。

Based on this,first part of this work has established spectrophotometer and laser induced fluorescence spectrographic methods based on the liquid-core waveguide,and made it successfully apply to detecting iron and the cupric ion concentration.

基于此,本工作第一部分建立了基于液芯光纤的分光光度法和激光诱导荧光光谱法,并成功地应用于1,10邻二氮菲对铁的检测和催化荧光动力学方法对铜离子浓度的测定。

Biosorption and tolerance of Sphaerotilus natans to heavy metal ions Ag+, Hg2+, Pb2+, Zn2+ were studied in this paper. Pb2+biosorption acts and conditions were emphatically discussed.

研究了球衣菌对重金属离子Ag+、Hg2+、Pb2+、Zn2+的耐受性及生物吸附情况,并着重对Pb2+的吸附行为及工艺条件进行了探讨。

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Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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