离子交换

Reduction and control of browning in Dangshan pear juice concentrate by ion exchange and absorption technologies were studied.

该文研究离子交换和吸附相结合技术在降低、控制浓缩砀山酥梨汁褐变中的应用。

During the first stage of the thermodegradation in nitrogen, the thermal stability of EVA /clay nanocomposites decreases din to the decomposition of octadecyl ammonium and a catalytic effect of acidic sits on the clay lavers deriving from the decomposition.

实验结果表明，通过离子交换反应，可使长链十八胺阳离子嵌入粘土片层间，增大了粘土的片层间距；对于EVA/有机化粘土体系，通过熔体插层可使EVA分子链插层于粘土片层中，使粘土片层被进一步撑开；EVA/粘土纳米复合材料具有较好的力学性能。

A novel least squares algorithm based on anti-WKB method and linear segment interpolation,which is called prediction-verification method, is proposed.This method takes the values calculated by anti-WKB and linear segment interpolation as approximation,then uses the least squares fitting,and after that compares the linear segment interpolation based on the anti-WKB method with it.

提出一种基于反WKB法与分段线性插值的最小二乘拟合方法来确定离子交换玻璃波导的横向折射率分布，它将反WKB法与分段线性插值所计算出的结果作为近似值，然后进行最小二乘拟合，并与基于反WKB的分段线性插值方法进行比较。

In our research , to find and study the important role of BSP proteinsand their related proteins in the development of zygotes and to find the new gene related to BSP , we cloned a cDNA gene sequence related to BSP proteins and make it express in eukaratic cells .

我们从大鼠子宫中通过DEAE－52离子交换柱等纯化得到TPK样品，收集有活性部分，一切操作在4t中进行，然后观察通过基因工程得到的HBRP对TPK活性的影响。

New ion exchange resins were widely used for saparating heavy metals,decolor-ing and the extractions and purifications of vitamines and antibiotics.

这类离子交换树脂在重金属分离、脱色，特别在维生素和抗菌素的选择吸附等方面，都有十分重要的意义。

Metallic elements to be produced by hydrometallurgy, including most gold, much silver , and large tonnages

现在透过离子交换、溶剂萃取及其它一些方法，使七十多种金属元素可以用湿法冶金来生产，包括大部分的金、许多银以及大吨量的铜和锌。

The key technology for splitters of manufacturing ion exchange in glass waveguide is analyzed .

对光功率分配器的关键技术———离子交换法制作光功率分配进行了详细的分析。

The optimal pH, which was the major factor influencing the adsorption of cadmium, was around 6.0; and the higher concentration of cations such as K~+, Na~+, Ca~(2+), Mg~(2+), the lower the sorbing capacity of the microalgae; This effect, on the other hand, also illustrated that the ion-exchange was the main adsorption mechanism.

衣藻和固定化衣藻对重金属镉的吸附在pH6.0左右达到最佳吸附，但pH的变化对衣藻吸附镉的影响较大；固定化衣藻则在极低pH值下吸附受到显著影响，在pH3-8的范围内，所受影响不大；背景阳离子的存在对二者吸附的影响非常显著，这从另一方面证明了离子交换为衣藻生物吸附的主要机制。

Secondly, based on static and dynamic adsorption experiments, the adsorption and desorption properties of the prepared fibrous sorbents were investigated.

其次，本文运用静态和动态吸附实验法，对所合成的离子交换/螯合纤维的吸附与脱附性能进行了探讨。

Three types of humic acids, i.e. peat, lignite and weathering coal (named as C-HA, H-HA and F-HA, respectively), were extracted and stability constants of Mn(superscript 2+) and Zn(superscript 2+) with the three humic acids were investigated.

以分别来源于草碳、褐煤和风化煤的腐殖酸为供试材料，采用离子交换平衡法研究了不同腐殖化程度的腐殖酸与Mn(上标 2+)和Zn(上标 2+)的络合稳定常数，并探讨了环境pH值对络合稳定常数的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐