分馏

但前者处于低成熟阶段；后者处于高成熟阶段，其形成是蒸发分馏作用的结果。

The former appears to be in low maturation stage , while the latter is likely to be in high maturation stage and its formation is resulted from fractional distilation .

基于三层BP网络的分馏产品质量综合评价

Synthetic evaluation to the quality of fractionation production based on neural networks

影响Fe同位素分馏的因素主要有生物有机作用和无机作用两种方式。

Fractionation of Fe isotopes is controlled by biological and inorganic processes .

尝试用U同位素比值来对Th进行分馏校正；

Try to use the ratio of uranium isotope to normalize Th mass fractionation ;

几个重要Ge同位素平衡分馏参数的理论预测

Theoretical prediction for several important equilibrium Ge isotope fractionation factors

富有机物流体中一些重要Ge同位素的平衡分馏参数

Some important Ge isotope equilibrium fractionation coefficients in organic-rich fluids

氢同位素平衡分馏系数α~e与T、M、f间的定量关系

Quantitative relation of hydrogen isotope equilibrium fractionation factor α ~ e with t , m and F

负热电离质谱法测量Os同位素组成的质量分馏校正

Mass Fractionation Correction of Osmium Isotopic Compositions in Negative Thermal Ionization Mass Spectrometric Measurement

分馏塔产品质量估计MIMO软测量

MIMO Soft Measurement for Quality Estimation for the Products of Hydrogen Cracking Fractional Column

用aspenplus模拟汽油分馏塔系统

Simulation of gasoline fractionator system by Aspen Plus

质谱测量获得的Os同位素数据需采用专门编制的离线处理程序进行脱氧和质量分馏校正。

The measured Osmium isotope data should be processed with mass fractionation correction and oxygen isotope interference correction .

本模型用MATLAB实现，仿真结果表明能较好地描述分馏塔的动态特性。

The model implemented by MATLAB , the result of simulation shows that the model better described the dynamic characteristics of distillation column .

植物营养元素的含量和δ~（13）C值随海拔而变化的特征及营养元素相互作用对碳同位素分馏作用的影响

Altitudinal variations of nutrient concentrations and carbon isotope compositions in a c_3 plant and the effects of nutrient interactions on carbon isotope discrimination in limestone areas of Southwest China

CLIPS专家系统与神经网络在FCCU分馏塔装置的应用

The Application of CLIPS Expert Sysytem and Neural Network in the FCC Fractional Column

在重油分馏塔Shell模型上的仿真实验结果表明，这种混合智能控制策略比原有控制策略在控制品质上有显著提高。

Simulation results on Shell model of heavy oil distillation column show that the control quality of this hybrid intelligent strategy is markedly improved compared with original control strategy .

研究证明，生物有机过程可以使Fe同位素产生大的分馏效应，因此根据Fe同位素组成的变化可以推测古环境中生命活动的存在。

Studies indicate that biological processes can significantly fractionate Fe isotopes , which in turn may be useful to trace the existence of biogenic activities in ancient environments .

因此，有关同位素分馏方面的定量描述及应用工作，应该以Cramer模型III为基础。

Therefore , quantitative description and application concerning isotope fractionation should be based on the Cramer model III.

质谱测定过程中，涂样溶液最佳的pH值范围为2～7，如果涂样溶液的pH值超出这个范围，就会引起较大的氯同位素分馏。

The best pH range of loading solution was 2 ~ 7 . If the pH value of loading solution was beyond the range , the observed fractionation of chlorine isotope would appear .

沉淀过程中热液矿物和热液相比应相对富集Eu和Ce，并再次发生轻重稀土的分馏。

The deposited hydrothermal minerals are richer in Ce and Eu than the solution , and a second fractionation between HREE and LREE occurs during the process of minerals deposition .

目的用超多人份混合血浆分馏抗血友病球蛋白（AHF）制备稳定的用于测定凝血因子促凝活性（F∶C）的标准品。

Objective To prepare stable standards for testing factor ⅷ coagulant activity ( F ⅷ∶ C ) using antihemophilic factor ( AHF ) fractionated from large pool plasma .

氧的非质量同位素分馏还将在（古）大气臭氧活性、火山喷发柱化学和O、S、N生物地球化学循环等研究中发挥更大作用。

This demonstrates that mass-independent oxygen isotope fractionation will play a more important role in the research on ( ancient ) atmospheric ozone activity , chemistry in volcanic plumes and O , S and N biogeochemical cycle .

其REE丰度逐渐增高，轻、重稀土分馏程度表现为愈趋显著的总体演化趋势。

Their REE abundance increases progressively and their light and heavy REE fractionations also have a general evolutionary trend of becoming more and more marked .

基于BP网络、RBF网络、PLS算法建立了加氢裂化分馏塔航空煤油干点软测量模型。

Based on the BP network , RBF network and PLS algorithm the model of soft sensor for the dry point of jet fuel in hydrocracking fractionator has been developed .

采用aspenplus流程模拟软件对气体分馏装置中丙烯塔的精馏过程进行计算机模拟。

In this paper , the process simulation software of ASPEN PLUS has been used to simulate the distillation process of the propylene tower in the gas fractionation unit .

VRDS装置常压分馏塔系统的问题分析

Problem Analysis of the Atmospheric Tower System of VRDS Unit

还表明，层状岩序稀土总量和（La/Yb）N值随层序增高而增加分馏趋势的一般规律。

Besides , this paper has shown that the total value of REE and ratio of ( La / Yb ) _N increase with rise of layered rock sequence yet , those coincidence with general low of REE fractionation tendency .

通过aspenplus模拟软件计算，找出扬子石油化工股份有限公司炼油厂气体分馏装置在高负荷下的瓶颈问题。

Bottleneck of the light-ends unit in Refinery of Yangzi Petrochemical Company Limited under the condition of high load has been found out through the calculation with Aspen plus simulation software .

气体分馏装置原料液化石油气（LPG）中有机硫化物形态复杂，考察分析工业装置精丙烯硫化物含量变化难度大。

It 's very difficult to investigate the content variation of sulfide in fine propene since the state of organic sulfide in gas fractionation unit feedstock ( LPG ) was very complex .

REE北美页岩标准化的分布模式曲线较平缓，（La/Yb）S的平均值接近于1，轻重稀土分馏不明显。

The REE curve normalized by NASC is horizontal and the average ( La / Yb ) _S ration of the oil shale is close to 1.REE fractionation is not clear .

在原油常压分馏塔中应用BJ塔板，可改善产品分馏效果，提高常压拔出率。

And the application in crude distillation column showed that the fractionation effect was improved and the distilled oil yield was increased .