查询词典 adsorption

Comparing with calix[4]arene, calix[6]arene has the bigger adjustment space, thus stronger selective adsorption ability to big metallic ion was shown.

与杯[4]芳烃相比，杯[6]芳烃空穴有更大的调节空间，选择性地吸附某些体积较大的金属离子能力应该更强。

Because of its unique structure, Nano-particle shows its small dimension effect, quantum effect, area effect, macroscopic quantum tunnel effect, it displays special function in optics, electrics, calorifics, magnetics, absorption, reflection, adsorption, Catalyzing and alkaloid etc.

纳米微粒因其独特的结构状态，产生出小尺寸效应、量子尺寸效应、面积效应、宏观量子隧道效应等，从而使纳米材料显现光、电、热、磁、吸收、反射、吸附、催化以及生物活性等特殊功能。

Parametering by adsorption in transfer foil and plastic injection into the mold cavity, the combination of the predeposited design will go to the cancellate, the design will be able to make precise positioning, and the finished product and do not need additional post-processing, such as jet protectors, and so on.

通过吸附在注塑模腔的转印箔膜和注进模腔熔胶的结合，预涂的设计图案便转附在凝固的塑件上，该设计图案更可以作出精密定位，而成品也不需要额外的后期处理，如喷保护漆等。

Their adsorption rate on the molecular sieve catalysts surface and the stability of their carbonium ions were then obtained based on the molecular simulation on these molecules from their dipole moment, 2-dimensional electrostatic potential energy contours and 3-dimensional electrostatic potential energy isosurface.

采用半经验的AM1量子化学计算方法和静态理论，分别考察了噻吩、 3 甲基噻吩和 2 ，5 二甲基噻吩分子结构特性的不同，从偶极矩、各自垂直于芳香环平面的二维电势能分布曲线和整个分子周围三维电势能分布情况等方面分析了它们在分子筛催化剂表面吸附速度的快慢和生成正碳离子稳定性的高低，进一步比较了噻吩及其衍生物所生成的正碳离子进一步反应的能量变化，从而可判断噻吩及其衍生物裂化脱硫速度的快慢，噻吩及其衍生物裂化脱硫的速度由大到小分别为：2 ，5 二甲基噻吩、 3 甲基噻吩、噻吩。

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂，进行催化热裂解制取乙烯的反应，研究发现，在β沸石分子筛和ZSM-5分子筛中引入过渡金属后，催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化，说明过渡金属的加入对于催化热裂解反应的机理具有影响，Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性，产物中氢气、焦炭的产率很高，Ti、Cr则未表现出氧化作用：分子筛及催化剂中引入银后，催化热裂解反应的转化率和乙烯的产率有了提高，丙烯产率没有很大的变化，说明银在催化热裂解反应中能够促进正碳离子的生成，又有可能通过氧化-还原作用部分改变反应机理，促进了自由基的生成，并且由于银对烯烃的吸附很弱，其氢转移反应和脱氢、加氢活性比较低，有利于烯烃产率的提高。

On Pt-Rh alloy electrode s, the effect of some operational parameters on the adsorption process of several unsaturated aliphatic acids was respectively examined by fast cathodically potentiodynamic polarization.

研究结果表明，在中等表面覆盖率下，所研究的不饱和有机酸在Pt-Rh合金电极上吸附速率都遵循Rogynski-Zilidowicz方程，Pt电极上吸附速率最大，从Pt电极向Rh电极过渡中，吸附速率下降 2 0～ 30倍。

The results show that adsorption of cationic polymers in porous media is affected mainly by electrostatic attraction and hydrodynamic forces.

结果表明，阳离子聚合物在多孔介质中的吸附主要受静电引力和水动力的影响。

When the causticization time was longer than 120min and higher than 80℃ with 1.1:1 of stoichiometric ratio, and the precipitation was longer than 30min at 80℃ with n:n(Na2S) being 1.45:1, the NaOH concentration after reviving was denser than 8%, and the revived caustic approximately had the same physical property and adsorption of CO2 as the new caustic.

结果表明：苛化反应温度大于80℃，反应时间超过120 min，n：n(Na2CO3)为1.1：1， CuO沉淀反应温度为80℃，反应时间30 min，n：n(Na2S)为1.45：1等条件下，再生后的NaOH含量可在8%以上，并且再生碱液的物性以及再生碱液对CO2吸收速率上与新鲜碱基本相同。

The two enzymes system α-amylase and glucoamylase were coimmobilized on celite and calcium alginate the lower in price and common use in the industry with the method of adsorption and embedding.

中文摘要：本文选取工业上较为常用、价格低廉的硅藻土和海藻酸钙为载体分别用吸附法和包埋法共固定化α-淀粉酶和糖化酶双酶体系。

By separating the crude oligosaccharide products with various ratios of activated charcoal and Celite, the results indicate that the products from 30% lactose (L30) had an adsorption percentage of 96.3%, the highest one among all mixtures of activated charcoal and Celite. The following fractionation by eluting successively with 10% and 20% ethanol aqueous solutions gave an oligosaccharide yield of 13.5% and a purity of 97.9%.

合成的寡醣以不同比例活性炭和矽藻土吸附分离，结果发现30%乳糖组(L30)经单活性炭组吸附即有96.3 %的寡醣吸附力，是所有活性炭与矽藻土混合组别中最高者，再经10 %与20 %乙醇冲提画分后可得13.5 %的收率，其寡醣纯度更高达97.9 %。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。