查询词典 fractionation

This procedure can effectively avoid glutenin fraction from contamination with other protein fractions generated by traditional Osborne fractionation scheme.

该方法避免了谷蛋白与传统的Osborne分级法所产生的其他蛋白质组分之间交叉污染的现象，而且快速稳定。

A modified Hedley P fractionation method was used to trace the dynamics of soil P pools.

采用修正的Hedley法对水稻长期定位肥料试验土壤各形态磷进行了研究。

Twelve soil samples from 0~20 cm soil layer were collected from north to south in the Loess Plateau calcareous soil and analyzed for fractionation of organic and inorganic soil phosphorus by Hedley method, amended by Tiessen and Moir.

以黄土高原自北向南采集的12个0~20 cm耕层土壤为供试土样，采用Tiessen和Moir修正的Hedley土壤有机无机磷分级方法研究了黄土高原石灰性土壤中不同形态磷组分的分布特征。

The products it provides include capillary columns for proteomics fractionation, dialysis and equilibrium dialysis, dialysis membrane data, electrophoresis products, protein, peptide and multi-ring cpd., oligonucleotide, HPLC column applications and so on.

它提供的产品有用于蛋白组学分级的毛细管柱，透析和平衡透析，透析膜数据，电泳有关的产品，蛋白质、肽和多环化合物，寡核苷酸，高效液相色谱系列应用等等方面的各类产品。

Objective To optimize the enrichment process of glycyrrhizic acid by intermittence foam fractionation.

目的优选间歇式泡沫分离甘草中甘草酸的最佳工艺条件。

The distillation process is simulated by using Aspen Plus with the DSTWU fractionation module and the NRTL property method results showed that 99.9% methylnaphthalene and almost 100% tritoluene could be recovered.

利用Aspen Plus化工模拟软件的DSTWU精馏模块对产物进行模拟运算。结果表明：采用NRTL物性方法的模拟计算结果能够满足工艺要求，甲基萘回收率可达99.9%，溶剂回收率可达100%。

The δ〓S value of pyrite, sphelerite and arsonopyrite is in the range of 4. 0‰ and -4. 2‰ with the highest frequency occurring around zero, indicating a uniformed sulfur source. The large variation and mainly negative values (0.2‰～-11. 3‰) of δ〓S for stibnite could be interpreted by isotope fractionation. The carbon isotopic characteristics exhibit a mixing nature of magmatic carbon and organic carbon.

矿床中的热液成因黄铁矿、闪锌矿和毒砂的δ〓S＝4.0‰—-4.2‰，呈塔式分布，δ〓S集中在0附近，表明其成矿体系具有均—化硫的同位素组成，而辉锑矿的δ〓S变化范围较大(0.2‰—-11.3‰)，除一个样品外均为负值，这是硫同位素分馏作用的结果。

Olein fractions by second dry fractionation is in liquid state inroom temperature and its melting point is 11.4℃.

干法二次分提最佳条件为：结晶温度：16℃；冷却速率：0.5℃/h；养晶时间：30h。

In order to solve some problems existed in the fractionation section of paraxylene unit, state space models for xylene column and its reboiler furnaces in the section were set up by analyzing the mechanism and the influence factors.

针对对二甲苯装置二甲苯精馏单元在操作和控制中存在的问题，从机理出发，建立该单元二甲苯精馏塔及其重沸炉的状态空间模型，基于多变量预测控制技术开发了该单元先进控制系统。

The detection limit was 10 times better than the conventional SPME method. Under the optimized analytical conditions, aqueous samples of trichloroethylene/perchloroethylene (20 μg/L) and benzene/toluene (10 μg/L) were analyzed. The δ13C fractionation compared to pure-phase and headspace analysis was less than 0.5‰.

在优化的条件下，对20 μg/L的三氯乙烯/四氯乙烯和10 μg/L的苯/甲苯水溶液进行了单体碳同位素分析，相比于纯溶剂碳同位素值，顶空同位素分析误差不超过0.5‰，而样本标准偏差为0.3‰。

He became prime minister in 1997 and won international acclaim for his role in the Northern Ireland peace process.

他在1997年成为总理，并且因为在北爱尔兰的和平进程中发挥的作用受到国际社会的赞许。

Mixed Page Sorting Method Using the cuttable user model, this thesis proposes a mixed page sorting method by using cutted user model in server-side and complete user model in client-side.

隐私分级利用的混合式页面排序方法针对个性化搜索中搜索结果排序的问题，本文利用隐私可控开放的用户偏好模型，提出一个在客户端和服务器端分步进行的隐私分级利用的混合式页面排序方法。