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吸附区域
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     The Establishment of Cellular Attachment Model for Hepatitis E Virus(HEV) and Its Application in the Identification of HEV Cellular Attachment Region
     戊型肝炎病毒细胞吸附模型的建立及病毒吸附区域初步研究
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     The Regional Dimension
     关于区域
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     The adsorption of fluoride in water by calcined layered double hydroxides was
     吸附过程
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     Outline of regional geological setting
     区域地质概况
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     absorbing time duration;
     吸附时间;
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     The Establishment of Cellular Attachment Model for Hepatitis E Virus(HEV) and Its Application in the Identification of HEV Cellular Attachment Region
     戊型肝炎病毒细胞吸附模型的建立及病毒吸附区域初步研究
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  adsorption zone
Thus, the primary adsorption zone moves through the column to regions of fresher adsorbent.
      
The primary adsorption zone is concentrated near the influent end of the column.
      


The adsorption heats on h-mordenite (HM) have been investigated by flow-DTA adsorptive calorimetric technique. Plots of differential absorption heats. (Q_d) of ammonia, pyridine, benzene, toluene and p-xylene at 200℃ against varying adsorption amounts (A) were given respectively. There appears a turning point on the plot of Q_d of ammonia vs. A, which shows that there are two kinds of acid sites on HM, one is strong with the adsorption heat of ammonia in the range of 120-155kJ mol~(-1), and the other weak in...

The adsorption heats on h-mordenite (HM) have been investigated by flow-DTA adsorptive calorimetric technique. Plots of differential absorption heats. (Q_d) of ammonia, pyridine, benzene, toluene and p-xylene at 200℃ against varying adsorption amounts (A) were given respectively. There appears a turning point on the plot of Q_d of ammonia vs. A, which shows that there are two kinds of acid sites on HM, one is strong with the adsorption heat of ammonia in the range of 120-155kJ mol~(-1), and the other weak in the range of 70-85 kJ mol~(-1). For the purpose of getting the information about the adsorption of aro- matic compounds on different adsorption regions containing different kinds of acid sites.the adsorption heat of benzene and toluene on HM partly and totaly poisoned by ammonia were respectively measured. The results demostrate that the non-physical adsorption of aromatic compounds only occurs on the regions contai- ning acid sites, nevertheless, the adsorption strength of aromatic compounds is different from that of ammonia on each region.

用自行装置的流动-差热吸附量热系统测定了氨、吡啶及芳烃在氢型丝光沸石(HM)上的吸附热。发现氨的吸附热-吸附量曲线上存在拐点,证实HM表面上存在能量差异较大的两类氨吸附中心。氨中毒的HM对芳烃的吸附热测定结果表明,不同的吸附区域对氨和芳烃的吸附强度各有不同。

The characteristics of phosphate(P) adsorption and desorption by 4 albic soils collected from the Three-River Plain. The experimental results showed that the soils had very strong ability to adsorb P. The whole process of adsorption was divided into the initially fast reaction (within 24 hours) and the slow reaction thereafter. In all kinetic models examined in this study, the Langmuir-type equation most perfectly modeled the kinetic processes of P sorption. The properties of P adsorption suggested that there...

The characteristics of phosphate(P) adsorption and desorption by 4 albic soils collected from the Three-River Plain. The experimental results showed that the soils had very strong ability to adsorb P. The whole process of adsorption was divided into the initially fast reaction (within 24 hours) and the slow reaction thereafter. In all kinetic models examined in this study, the Langmuir-type equation most perfectly modeled the kinetic processes of P sorption. The properties of P adsorption suggested that there were two populations of adsorbed sites which differed in the affinity for P, and therefore the sorption of P may be described using two-surface Langmuir equation. The process of P desorption had an evident hysteresis phenomenonn at high P concentration. The characteristics of successive desorption further indicated the presence of two forms of adsorbed sites or regions, one adsorbed P tightly, another loosely.Organic matter (O. M.) significantly affected P sorbtion by soils. The addition of O. M. could increase the amount of P adsorbed but it could be conductive to P desorption as well. The higher the content of O. M. the more easily the adsorbed P, especially at low P concentration. After O. M. was removed, P was more tightly adsorbed by soils, and therefore the desorption rate decreased evidently.

本文对采自黑龙江省三江平原地区三个不同亚类的四种白浆土的表层和白浆层的磷酸盐吸附与解吸特性做了较详细的研究,结果表明,白浆土是一种吸磷能力很强的土类。整个吸附过程分快反应和慢反应两步进行。吸附动力学过程能很好地拟合Laogmuir型方程。磷在白浆土中的吸附特性表明,土壤中存在两种能量不同的吸附点位,因此,其吸附过程可用双面Langmuir方程描述。白浆土的解吸过程存在明显的滞后现象,连续解吸特征进一步证明白浆土中含有两种不同类型的吸附点位或吸附区域。一类结合能常数较高,被吸附的磷难于解吸,另一类则相反。有机质显著地影响白浆土对磷的吸附与解吸。增加或去除有机质都可促进磷的吸附,但增加有机质可使被吸附的磷易于解吸,在低磷浓度下尤其如此,而去除有机质后,则使磷的解吸难于进行。

 
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