助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   result of extraction 的翻译结果: 查询用时:0.192秒
图标索引 在分类学科中查询
所有学科
中药学
更多类别查询

图标索引 历史查询
 

result of extraction
相关语句
  “result of extraction”译为未确定词的双语例句
     When cyclohexane is used as an extraction agent and the volume ratio of extraction agent to dilute sul- furic acid is 0.6 ∶ 1, the best result of extraction is obtained.
     当使用环己烷作萃取剂,萃取剂与稀硫酸的体积比为0.6∶1时,萃取效果最佳.
短句来源
     Conclusion There were some components of inhibiting the growth of Hela cell in the fruiting body of Ganoderma lucidum. The percolating conditions: the soaking time of 1 d, the percolating rate of 0 5 mL·min -1 , the solvent volume of 200 mL and the temperature at 60 ℃, can ensure obtaining the best result of extraction.
     结论 灵芝子实体中含有抑制 Hela细胞生长的成分 ,以浸泡 1 d,漉速 0 .5 m L· m in- 1 ,洗脱液用量 2 0 0 m L 和操作温度 60℃为条件能得到最大量的有效成分 .
短句来源
     The algorithm of email extraction was given. URL extraction module,email extraction module and storage module were described in detail. The result of extraction is stored in database for the use of data retrieval.
     以提取网站内部email信息为例,提出了Web信息抽取系统设计方案,阐述了email信息抽取的工作原理和关键技术,给出了email抽取算法,并详细介绍了系统的抽取URL、email和存储模块,抽取结果保存于数据库中,供机器检索利用。
短句来源
     The experiment shows that the best result of extraction is obtained when 95% alcohol and solution(1∶6) are used twice in recycle flow extraction,and each cycle lasts 2~3 h. Refined oil and the coarse flavonoid can be achieved after merging filtrate,recycling ethanol and concentration. The concentration of linolic acid in refined oil can reach 78.6%.
     实验证明,以95%乙醇、料液比1∶6进行两次回流提取,每次提取时间为2~3h,提取效果最佳,滤液回收乙醇后,离心分离得黄酮粗品和精油,得到的精油中亚油酸含量达78.6%;
短句来源
     Experiments show that the result of extraction using acidic industrial alcohol is better than that using acidic solution.
     结果表明,采用酸性工业酒精提取要优于酸性水;
短句来源
更多       
  相似匹配句对
     Result:
     实验结果
短句来源
     Result Y.
     结果从猪粪便中分离Y.
短句来源
     The result of N.
     Ejiri的结果.
短句来源
     The result of the RTL
     最终的RTL仿真结果表明,
短句来源
     Extraction of the Nicoline
     烟碱的提取
短句来源
查询“result of extraction”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  result of extraction
However, because of its relatively high price-a result of extraction and processing costs-it is used only when it is the only choice.
      
N mineralization capacity of the soil was reduced appreciably as a result of extraction.
      
N mineralization capacity of the soil was reduced appreciably as a result of extraction.
      
The increase in nisin was explained as a result of extraction of lactic acid from the bottom phase to the top one.
      
Magnetite is formed as a result of extraction of iron together with silicon and phosphorus from dolerite.
      
更多          


The adsorption phenomena of trace ionic gold in paper chromatography were investigated. The paper chromatography with acetone-water-hydrochloric acid (7:2:1) as solvent, which is being used as the standard method for controlling radiochemical purity of colloidal gold-198 injection in pharmacopoeia of many countries, was found to give lower analytical value of ionic gold which was seriously adsorbed on the chromatographic paper.We found that by immersing the chromatographic paper previously in a 2% NH4C1 solution,...

The adsorption phenomena of trace ionic gold in paper chromatography were investigated. The paper chromatography with acetone-water-hydrochloric acid (7:2:1) as solvent, which is being used as the standard method for controlling radiochemical purity of colloidal gold-198 injection in pharmacopoeia of many countries, was found to give lower analytical value of ionic gold which was seriously adsorbed on the chromatographic paper.We found that by immersing the chromatographic paper previously in a 2% NH4C1 solution, the adsorption of ionic gold on the paper can be eliminated. By this method the content of ionic gold obtained agrees with the result of extraction-spectrophotometry, and the product quality can also be controlled effectively.This method is recommended as the pharmacopoeia method for the determination of ionic gold in the colloidal gold-198 injection.

本文研究了纸色层分析中微量金离子的吸附现象;找出了在许多国家药典中关于用纸上色层法(以7:2:1的丙酮-水-盐酸为溶剂)控制放射性胶体金-198注射液放化纯度时所存在的问题:由于微量金离子在纸上有严重的吸附,使金离子含量的分析值大为偏低。 本文通过实验,进一步提出预先用2%氯化铵溶液浸泡色层纸的方法,消除了金离子的吸附。本法所得金离子含量的色层分析结果与萃取分光光度法符合,可有效地控制产品质量。

The synergistic extraction of lithium with a solution of ο-phenylazophenols(HAX) and trioctylphosphine oxide (TOPO) or other trialkylphosphine oxide(TRPO, R=C_8~10) inο-dichlorobenzene from aqueous solution of lithium hydroxide was reported. The structural effect ofο-phenylazophenols on extraction of lithium has been examined. Theο-phenylazophenols studied were divided into two groups:(1)1-(p-X-phenylazo)-2-naphthol (X=H, CH_3, Bu, OH_3O); (2)2-phenylazo-1-naphthol (1);1-phenylazo-2-naphthol (2),...

The synergistic extraction of lithium with a solution of ο-phenylazophenols(HAX) and trioctylphosphine oxide (TOPO) or other trialkylphosphine oxide(TRPO, R=C_8~10) inο-dichlorobenzene from aqueous solution of lithium hydroxide was reported. The structural effect ofο-phenylazophenols on extraction of lithium has been examined. Theο-phenylazophenols studied were divided into two groups:(1)1-(p-X-phenylazo)-2-naphthol (X=H, CH_3, Bu, OH_3O); (2)2-phenylazo-1-naphthol (1);1-phenylazo-2-naphthol (2), 3-phenylazo-2-naphthol(3),8-phenylazo-1-naphthol(4) , 1-phenylazo-2-anthrol(5),9-phenylazo-10-phenanthrol(6)and 2-phenylazo-4-methyl-1-phenol (7).In the case of 1-(p-X-phenylazo)-2-naphthols, the HMO calculation shows that the charge density of azo nitrogen atom (the donor atom, denote azo N) and hydroxyl oxygen atom does not vary apparently, so that the stability of their chelates with lithium has no obvious variations as well. In this case their ability to extract lithium is chiefly governed by the pK_a of the compound. The results of extraction prove that there is a linear correlation between the extraction constant K_(ex) and pK_a.However, for the second group of chelating agents, the change of their structure leads to the change of both pK_a and stability of chelates. The results of extraction and HMO calculation show that the stability of chelates is mainly influenced by the strength of the coordination bond, i.e. the larger the charge density of azo N(q_N) , the more stable the chelate will be. Therefore, their ability to extract lithium is roughly directly proportional to the stability of chelates and inversely to the pK_a For example, compound 1 possesses the lowest pK_a and midium q_N values, so that it has the highest extraction ability. Compound 4 has the smallest q_N, midium pK_a, values and the lowest extraction ability.The strength of coordination bond for the chelates can be experimentally measured by means of the strength of intramolecular hydrogen bond of chelating agent, △б_OH (the difference of chemical shift of hydroxyl proton in free and bonded state). Therefore, the ratio, △б_OH/pK_a, can be used to evaluate the extraction ability of chelating agents to lithium. We find that it is approximately proportional to the distribution ratio (D) (see Table 4 in. the Chinese Text).

本文通过对-取代苯基偶氮-2-萘酚及邻-取代苯基偶氮-芳香酚两种类型共十一种螯合剂与TOPO(或TRPO)协草锂的性能研究及HMO计算,讨论了该类螫合剂与中性协萃剂协萃锂时的结构效应。结果表明:(1)对-取代苯基偶氮-2-萘酚类赘合剂的苯基偶氮的配键N原子的电荷密度q_N与羟基氧原子的电荷密度qo_H无明显变化,萃取能力只受螯合剂pK_a的影响,协萃锂的表观平衡常数随整合剂pK_a值的下降而上升;(2)邻苯基偶氮-芳香酚类螯合剂由HMO计算表明,它们的羟基氧原子的电荷密度qo_H、配键N原子的电荷密度q_N及pk_a值都发生明显的变化,它们与TRPO的协萃能力随配键强度的增加而上升,并随PK_a值的上升而下降,其中最合适的结构是1-OH-2-(C_6H_5N=N)-C_(10)H_6,它的Pk_a值较小,q_N适中,所以协萃能力最大。相反,1-(C_6H_5N=N)-8-OH-C_(10)H_6的q_N最小,pK_a居中,协萃能力最小;(3)螯合物的稳定性主要由配键控制。因此,以螯合物分子的内氢键强度Δδo_H来量度配键强度,发现螯合剂萃取锂的分配系数随其分子的Δδ_OH/pk_a值的增大而递增。

MoO_3/γ-Al_2O_3, MoO_3/TiO_2 and MoO_3/SiO_2 samples prepared by impregnation method have been studied by various techniques, including XPS, XRD, and extraction of molybdenum with ammonium solution or water. The result of extraction of molybdenum with ammonium solution shows that if the MoO_3 content is lower than certain amount, a constant fraction (71% for MoO_3/γ-Al_2O_3 system and 66% for MoO_3/TiO_2 system) of MoO_3 can be dissolved in 3wt.% solution of NH_4OH and if the MoO_3 content is higher than...

MoO_3/γ-Al_2O_3, MoO_3/TiO_2 and MoO_3/SiO_2 samples prepared by impregnation method have been studied by various techniques, including XPS, XRD, and extraction of molybdenum with ammonium solution or water. The result of extraction of molybdenum with ammonium solution shows that if the MoO_3 content is lower than certain amount, a constant fraction (71% for MoO_3/γ-Al_2O_3 system and 66% for MoO_3/TiO_2 system) of MoO_3 can be dissolved in 3wt.% solution of NH_4OH and if the MoO_3 content is higher than that amount, surplus MoO_3 can be dissolved completly. The turning point of both systems is in line with the dispersed threshold value obtained by XPS and XRD methods. It means that MoO_3 disperses as monolayer on these carriers before the turning point and forms crystallite grain after that. The constant dissolved fraction of MoO_3 in ammonium solution shows that there are two different surface species in monolayer state, one is soluble and another is not. Two kinds of species coexist in monolayer with constant ratio, which have also been confirmed by XPS experiment for samples before and after extraction. The samples which soluble species was thoroughly removed were recalcined at certain temperture and again soaked into ammonium solution a lot of soluble species were reproduced then. The dissolved fraction of them approched that of the samples before extraction with a rise in temperature and a prolonging of time. We suggest that the monolayer dispersed MoO_3 on γ-Al_2O_3 or TiO_2 surface can be divided into two kinds of surface species, one is located in octahedral vacancy of O~(2-) and another in tetrahedra vacancy. They join each other by sharing oxygen ions and form monolayer aggregate patch' in a special way (similar to γ-molybdena Mo_4O_(11)). It is a thermodynamic favorable state in both systems. For MoO_3/SiO_2 samples, however, the situation is quite different. All of MoO_3 species in the monolayer is soluble thoroughly in ammonium solution. It shows that the mutual interaction between MoO_3 in monolayer state and the surface of SiO_2 carrier is much weaker than that of two other systems.

本文用浸渍法制备了不同含量的MoO_3/γ-Al_2O_3、MoO_3/TiO_2、MoO_3/SiO_2系列样品,用氨溶、水溶,XPS、XRD等实验手段对这三个体系进行了研究。氨溶实验表明MoO_3在γ-Al_2O_3和TiO_2表面呈单层分散,其分散阈值(即最大分散量)与XPS强度比法,XRD相定量法所测结果基本一致。这二个体系氨溶曲线在阈值前斜率分别为0.71和0.66,说明分散在γ-Al_2O_3或TiO_2上的单层MoO_3分为氨水可溶和不可溶二种状态,这二种状态以确定的比例共存于阀值前的整个浓度区间。这一现象也为氮溶前后样品XPS强度比的比值所证实。实验还表明MoO_3/γ-Al_2O_3样品的氨溶残渣经脱水加热可产生大量可溶的MoO_3,随着烘烤温度的提高,时间的延长,新生成的可溶MoO_3分率趋近样品氨溶前的可溶分率。我们认为分散在γ-Al_2O_3或TiO_2上的单层MoO_3分为二种结构状态,一种是Mo~(6+)处在氧八面体空隙中,另一种则处在氧四面体空隙中。二种状态相互邻接,共用O~(2-)离子,以特定连结方式(类似于γ-氧化铝Mo_4O_(11)形成“单层聚集小片”。这样的小片是热力学...

本文用浸渍法制备了不同含量的MoO_3/γ-Al_2O_3、MoO_3/TiO_2、MoO_3/SiO_2系列样品,用氨溶、水溶,XPS、XRD等实验手段对这三个体系进行了研究。氨溶实验表明MoO_3在γ-Al_2O_3和TiO_2表面呈单层分散,其分散阈值(即最大分散量)与XPS强度比法,XRD相定量法所测结果基本一致。这二个体系氨溶曲线在阈值前斜率分别为0.71和0.66,说明分散在γ-Al_2O_3或TiO_2上的单层MoO_3分为氨水可溶和不可溶二种状态,这二种状态以确定的比例共存于阀值前的整个浓度区间。这一现象也为氮溶前后样品XPS强度比的比值所证实。实验还表明MoO_3/γ-Al_2O_3样品的氨溶残渣经脱水加热可产生大量可溶的MoO_3,随着烘烤温度的提高,时间的延长,新生成的可溶MoO_3分率趋近样品氨溶前的可溶分率。我们认为分散在γ-Al_2O_3或TiO_2上的单层MoO_3分为二种结构状态,一种是Mo~(6+)处在氧八面体空隙中,另一种则处在氧四面体空隙中。二种状态相互邻接,共用O~(2-)离子,以特定连结方式(类似于γ-氧化铝Mo_4O_(11)形成“单层聚集小片”。这样的小片是热力学稳定态。由于二种结构状态与载体的相互作用强弱不同而造成了氨水可溶或不可溶二种状态。MoO_3/SiO_2体系,对氨溶而言,只有一种状态,分散在SiO_2上的MoO_3几乎全部溶解。由此可见,MoO_3与SiO_2表面的作用比上述二个体系弱得多。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关result of extraction的内容
在知识搜索中查有关result of extraction的内容
在数字搜索中查有关result of extraction的内容
在概念知识元中查有关result of extraction的内容
在学术趋势中查有关result of extraction的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社