查询词典 ion exchange

Na-K-Exchanging ATPase is a universal cell membrane protein in higher eukaryotic cells which mediates the anti-concentration gradient exchange of intracellular Na+ for extracellular K+. It plays essential metabolic roles such as maintaining sodium and potassium ion gradients across the plasma membrane. The targeted sequences were amplified by PCR to determine the genome structure of the hithertofore unsequenced portion of the alpha 1 subunit of the human Na-KExchanging ATPase gene which encodes 80-130 aa of its extracellular domain using two different templates, human genomic DNA and a human muscle cDNA library. The PCR products were analyzed by restriction endonuclease digestion and then cloned into a plasmid vector for chemiluminescence sequencing and further analysis.

Na-K-Exchanging ATPase是一种普遍存在于高等生物体内的细胞膜蛋白，主要参与介导K+和Na+在细胞内外之间的逆浓度梯度的转运，并维持一定细胞内外的离子梯度，我们采用聚合酶链式反应方法分别以人基因组DNA及cDNA文库为模板对人Na-K-Exchanging ATPaseα1亚单位基因胞外区约80-130位氨基酸编码序列进行扩增，限制性酶切分析扩增产物，并进行荧光测序，对测序结果进行同源性分析及剪接位点的搜索并对得到的核苷酸序列进行进一步的分析，发现人基因组DNA和cDNA经过扩增后分别得到833bp和195bp两种不同大小的片段Fg，Fc。

The exchange of the electrovalence of the cupric ion has been testified by XPS-ESCA.Graphite and chloride in the stage structure,seem to be the conductor and insulator,which form the "sandwich" structure.This special structure produced a weak chemical bond belt and provided the carrier space in the perpendicular direction to the c-axis.These factors in and vertical to the direction of c-axis together increased the electrical properties.

GICs将良导体的石墨层与绝缘体的氯化物层在分子尺度上结合起来，所形成的阶结构相当于许多导体和绝缘体层组成的&三明治&结构，产生化学键薄弱的通道，提供了垂直c轴方向的载流子通道，隧道效应和格架空间提供了载流子活动空间，这些因素共同作用使得GICs的电导率成倍增加

In view of △F, the natural tendency of acidification as a result of aluminium transformation in red soils was further proved in thermodynamics, and the energy characteristics for exchange-adsorption of aluminum and potassium by calcium ion was revealed.

从热力学角度进一步论证了红壤铝质化即酸化的自然趋势，并揭示了钙与铝、钾离子交换吸附的能量特征。

In addition, UE/HPLC/ICP-MS equipped with anion exchange column to speciate Cr and Cr in the μg/L level. H2 and He were used as collision gas in the ICP-MS detection to reduce the interference of multiatomic ions for Cr-52 ion monitoring.

又为继续提高灵敏度，本研究也使用超音波震荡/阴离子交换管柱的高效能液相层析/感应耦合电浆质谱法将三价铬及六价铬分离，并且将侦测范围降低至μg/L。

The result shows, that all the measures of fostering fertility can increase the whole-nutrients and the quick-acting nutrients obviously, and the exchange capacity of positive-ion and pH of soil decrease.

结果表明：各种培肥措施均能明显提高土壤全量养分和速效养分含量，而且土壤阳离子代换量及pH值也有所降低。

The Tatun Coal Electricity Company Gangue Thermal power plant boiler supplies aqueous system used traditional the preparation craft, the processing water source was the ground water ahead of time, namely carries on the pretreatment elimination water through the mechanical filter the suspension, the colloid, the organic matter and so on, through the ionic exchange technology except the dehydration in salty ion, its craft approximately is again as follows

大屯煤电公司矸石热电厂锅炉补给水系统先期采用传统的制备工艺，处理水源为地下水，即通过机械过滤器进行预处理去除水中的悬浮物、胶体、有机物等，再通过离子交换技术除去水中的盐离子，其工艺大致如下

Topics include diffusion, membranes, water relations, ion transport, photochemistry, bioenergetics of energy conversion, photosynthesis, environmental influences on plant temperature, and gas exchange for leaves and whole plants.

题目包括扩散，膜，水关系，离子运输，光化学，能量变换，光合作用，对植物温度的环境影响的生物 Living beings 能学，并且气体交换叶子和整套设备

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷