保留指数,Retention index
1)Retention index保留指数
1.Prediction of gas chromatography retention index of alcohol by a new connectivity index G;修正的连接性指数G用于脂肪醇气相色谱保留指数的预测
2.The conectivity index for QSPR study of gas chromatography retention index;~mB对气相色谱保留指数的QSPR研究
3.With 0L、1L quantitative relationships between structure and kováts retention index of sulfides(64 saturated sulfides and 29 unsaturated sulfides) on four stationary phases of different polarities were studied.研究了0L、1L与64个饱和硫醚和29个不饱和硫醚在4种不同极性固定相上气相色谱保留指数的相关性,给出了相关方程,相关性良好,相关系数均大于0。
英文短句/例句

1.Topological Index of Alcoholic Structure and Prediction of Chromatography Retention Index醇拓扑指数对其色谱保留指数的预测
2.QSPR study of the chromatographic retention time(RRT) of polychlorinated biphenyls(PCBs)多氯联苯色谱保留指数QSPR建模的研究
3.Research of Topological Index of 2D/3D-Ketone in the Chromatography有机酮2D/3D拓扑指数与色谱保留指数的相关性研究
4.A molecular topological research on thegas chromatographic retention index of alcohol isomer醇类异构体气相色谱保留指数的分子拓扑研究
5.THE RELATIONSHIP BETWEEN PHYSIC-CHEMISTRY PROPERTIES OF CHLOROBENZENES AND THEIR RETENTION INDICES;氯代苯类化合物的气相色谱保留指数与其理化参数的相关性研究
6.Relativity Study On Topological Index Of Alcoholic Structure And Gas Chromatography Retention Index;色谱保留指数I_R与有机醇结构相关性的拓扑研究
7.Advance in Application of Gas Chromatography Retention Index in Analysis of Aroma Compounds气相色谱保留指数及其在香味研究中的应用研究进展
8.Relationship between the molecular structure and gas chromatographic retention index of alcohol isomer醇类异构体气相色谱保留指数与分子结构的定量关系
9.Quantitative Structure-Retention Relationship Based on Retention Index of Phenols in Gas Chromatography酚类化合物气相色谱保留指数的定量结构相关性研究
10.Analysis of Volatile Compounds from Mentha hapioealyx Briq by GC-MS Based on Accurate Mass Measurement and Retention Index基于准确质量测定和保留指数的GC-MS分析薄荷挥发性成分
11.The Application of Auto-Calculating Program for Retention Index in Qualitative Analysis of Monomel Hydrocarbon of Oil Products on CGC保留指数自动计算程序在油品单体烃毛细管气相色谱定性分析中的应用
12.Qualitative Analysis of Monoterpene Isomers by GC-MS with Spectral Similarity Analysis and Retention Index谱图相似度分析结合保留指数对单萜烯同分异构体的GC-MS定性分析
13.Truncates a number to an integer by removing the decimal, or fractional, part of the number将数字截为整数或保留指定位数的小数
14.How much disk space do you want to reserve for this database?请指定为该数据库保留的磁盘空间大小:
15.The commander would be commended.指挥官是被保留着的。
16.For example, the number of commanders who are to remain at various levels will be smaller.比如,各级指挥员人数,过去保留得多一点,这次要力求少一点。
17.To specify a version limit, select the Specify version limit check box, and then type a limit in the Number of versions to retain box.若要指定版本限制,请选中“指定版本限制”复选框,然后在“保留的版本数量”框中键入限制。
18.This log file contains records logged before the designated point-in-time. The database is being left in load state so you can apply another log file.此日志文件包含指定的即时点之前的记录。数据库将保留于装载状态,以便应用另一个日志文件。
相关短句/例句

retention indices保留指数
1.Novel topological indices: Molecular Polarizability Effect Index(MPEI),Vertex Degree-Distance Index(VDI),Odd-Even Index(OEI),Steric Effect Index(SVij) and Eigenvalues of Bond-connecting matrix(X1CH) were used to predict the boiling points and chromatographic retention indices(RI) on different polar stationary phases for a mixed set of aldehydes and ketones.通过对醛酮化合物分子结构特征及其气相色谱保留指数(RI)和沸点与分子结构间关系的研究,提出了分子极化效应指数(MPEI)、奇偶指数(OEI)、立体效应指数(SVij)、顶点度-距离指数(VDI)及键连接矩阵特征根(∑X1CH)等拓扑-量子结构参数,用多元线性回归(MLR)方法获得了醛酮类化合物的沸点及其在不同极性色谱柱上的气相色谱保留指数与这些拓扑-量子指数间良好的定量结构-性质相关(QSPR)模型,相关系数均大于0。
2.Both structural and thermodynamic (parameters) of PCNs obtained were consequently taken as theoretical descriptors and correlated with their gas chromatographic retention indices (RI), so as to develop the relevant quantitative structure-retention relationship (QSRR) regression model (model Ⅰ) with r~2 of 0.在B3LYP/6-31G*水平上计算了76个多氯萘分子,将计算得到的结构参数和热力学参数作为理论描述符引入到与气相色谱保留指数(RI)相关的多元回归分析中,建立了拟合度高、物理意义明确、预测能力强的保留时间-结构参数的相关方程(模型Ⅰ)(r2=0。
3.The correlative relationship between three topological indices( A m1 ,X z and 1X ) and gas chromatographic retention indices of some hydrocarbon compounds was studied.Aml、Xz 和1X 3种拓扑指数与 18种非同系物烃类在 3种固定液上的气相色谱保留指数的关联结果表明 :多元校正法可比常规一元校正法得到更好的相关关系 ,三元校正法可使回归方程的相关系数达 0 。
3)Kovats retention indexKovats保留指数
1.leaves were analyzed and identified by the GC-MS analysis and the Kovats retention index.采用气相色谱-质谱联用技术并结合Kovats保留指数(IK)对比法分析鉴定了乌杨梅(Myrica rubraVar。
4)Lee's retention indexLee's保留指数
5)retention index (RI)保留指数RI
6)gas chromatography retention index色谱保留指数
1.Two methods which are used usually are gas chromatography retention index and GC-FTIR.利用色谱保留指数和色谱-付立叶交换红外光谱法(GC-FTIR)可提高GC/MS分析的可靠性,本文叙述了这两个方法的原理和应用实例。
延伸阅读

保留指数分子式:CAS号:性质:又称科瓦茨指数(Kovats in-dex)。气相色谱定性指标的一种参数。将正构烷烃的保留指数定为它的碳数的100倍。待测物质的保留指数是与待测物质具有相同调整保留值的假想的正构烷烃的碳数的100倍。通常以色谱图上位于待测物质两侧的相邻正构烷烃的保留值为基准,用对数内插法求得。在同一柱上,物质的保留指数与柱温呈线性关系。