阳离子

The transfection efficiency of the nanocomposite was superior to that of cationic liposome gene complex to transfect colorectal cancer cells.

该基因纳米复合物转染大肠癌细胞的效果强于阳离子脂质体基因复合物。

Objective: Purpose to investigate the different in vitro function of targetable non-viral vector containing poly-L-lysine or protamine.

DNA-多聚阳离子-配体形成的复合体可以通过受体介导的内吞作用将目的基因靶向性导入含相应配体的细胞中［1］。

Sythesis and application of chlorostyrene-DVB strongly acidic cation exchange resin ;2. For this study,a series of poly( p -amino styrenes) with various amounts of supported hydrogen chloride,and a series of strongly acidic cation exchange resin s with various exchange capacity were synthesized,and their catalytic property for ketalization of cyclohexanone and glycol were investigated.

通过测定固载了不同量的氯化氢的聚和不同交换量的强酸性阳离子交换树脂催化的环己酮与乙二醇的缩酮化反应缩酮的收率，研究了聚合物固体酸催化剂的疏水性对其催化缩酮化反应性能的影响；发现在一定范围内增加催化剂的疏水性，可提高缩酮化反应的收率。

The stablest complex has been predicted by using the formation energy and the binding energy. The mechanism of the hydrogen passivation effect was also briefly discussed in our present study.

通过形成能和束缚能的计算，找到了复合杂质稳定存在的形态，分析了H对阳离子空位缺陷的钝化作用的过程和起因。

Cationic Polymers ; Clay Stabiliser ; Mud Additive ; Synthesis ; Performance Evaluation ; Field Tests

阳离子聚合物；粘土稳定剂；泥浆添加剂；合成；性能评定；现场试验

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。

The energy change and mechanism of 〓,〓,and 〓 sorbed on goethite were also studied with microcalorimetryfirstly,so as to confirm the difference of mechanism of anion and heavy metalcation sorbed on soil colloids and clay minerals.

与此同时，首次应用微量热法对针铁矿表面吸附〓磷酸根离子反应中的热量变化进行了探讨，以揭示重金属阳离子和阴离子在土壤胶体与粘粒矿物表面吸附反应的机制。

Corrosion occurs whenever a metal ion in the solid crystalline lattice of a metal is induced to become a solvated cation

当固体晶格中的一个金属离子侵入而形成溶剂化阳离子，便会产生腐蚀。

The mechanisms of stability of the sols and film formations were discussed.

本文以钨酸钠阳离子树脂酸化法制备三氧化钨溶胶，采用提拉法成膜。

In different softeners, anionic and cationic yellowing of the most serious, and to the yellowing of polyvingl loition.

在差别的柔软剂洋，以阴离子和阳离子型的泛黄最惨重，而以聚乙烯乳液的泛黄较少。

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。