查询词典 terpane

The biomarkers such as the n-Alkanes, the isoprenoids, the terpane, and cholestane were detected through GC-MS analysis. Based on the study of the biomarkers, the biological evolution during Permian and Triassic can be divided as three stages, namely, the mixing source stage of low biota such as thallose and advanced plant in late Permian (below bed 63), the stage of low biota such as thallose in the boundary transitional layer (bed 63-69) and the mixing source stage of advanced plant and low biota such as thallose in early Triassic (above bed 69). What's more, the second stage near the boundary transitional layer can be subdivided into 4 stages. The stages of biota evolution is close related with sedimentary environment changing and the boundary transitional layer.

利用GC—MS分析技术，在陆相地层中检测出正构烷烃、类异戊二烯烷烃、萜烷和甾烷类生物标志化合物并根据生物标志化合物和特征值研究，将二叠系—三叠系生物演化划分为三个大的阶段，即晚二叠世的菌藻类低等生物与高等植物混源阶段（63层以下），界线异常层的菌藻类低等生物阶段（63-69层）和早三叠世高等植物与菌藻类低等生物混源阶段（69层以上），界线附近异常层的第二阶段又进一步细分为4个次一级阶段，生物演化阶段与沉积环境变化及界线异常层具有非常密切关系。

The main conclusions of this thesis were as follows: 1 Through compared the original peaks, relative concentration distribution and diagnostic ratios of normal alkanes,Naphthalene, Dibenzothiophene, Fluorene, Phenanthrene, Chrysene and their alkyl PAHs, terpane-sterane biomakers of five crude oils, it was confirmed that five single crude oil was unmatched each other.

通过正构烷烃、萘、菲、芴、二苯并噻吩、屈及其烷基化系列多环芳烃、甾萜类生物标志物的原始谱图比较；组分浓度的分布模式比较；诊断比值的比较；对5种不同地质层次的原油进行了鉴别，结果表明5种原油均为独立油样，这与实际情况相符和；t检验分析的使用，使得溢油鉴别更加科学化，定量化；SPSS模糊聚类的使用，使得各油样之间&亲疏远近&的关系，即&属于的程度不同&的概念得以充分表现；明确了&是非&分明的概念。

A method for analysis n-alkanes,steranes and terpane s in oil by internal standard method was established.

采用内标法建立了原油中正构烷烃、生物标志物的分析方法。

The content of each different single oil of mixed oils could be calculated using the components concentration and diagnostic ratios of normal alkanes and terpane (m/z 191) biomakers of different single oil.

通过运用单种油样的正构烷烃浓度，萜类(m/z191)生物标志物的浓度以及它们的诊断比值作为参数，计算混合原油中的单种原油含量，其误差在允许的范围之内。

The crude oils of Chang 20 belong to typical immature oil which have odd even predominance and lower ratios of sterane and terpane maturity index.

长20井的原油既具有正烷烃奇偶优势，又具有较低甾萜烷异构体比值，属于典型的低熟原油。

The molecular composition measurement (GC/MS analysis) of the products formed in the different experimental stages showing that some sterane and terpane molecular parameters in crude oils are related to evaporation fractionation.

为了解油气成藏过程中常见的降压和气洗作用对甾、萜烷分子组成的影响，开展了PVT模拟实验。

The biomarker compounds include n-aldane, sterane and terpane, they obviously differ in terms of the chemical composition as reflected by their geochemical parameters :the CPI value, content of C17 and C18 compounds, the ratio between light hydrocarbons and heavy hydrocarbons, the conversion of configuration and the maturity.

由于它们所处的沉积环境和生源母质上的差异，反映在正构烷烃的CPI值、C_(17)和C_(18)的含量、轻重烃比值、化合物构型的转化、有机质的成熟度和17α-22，29，30-三降藿烷与18α-22，29，30-三降新藿烷的比值等地球化学参数上的差别。

According to the geochemical characteristics of Upper Palaeozoic oil and the relationship between the above characteristics and hydrocarbon resource meks of Carboniferous coal series in Konggu-4 well in the Huanghua depression, this paper elaborates the "fingerprints" of sterene and terpane in saturated hydrocarbon fraction from Tertiary oil.

通过对黄骅孔古4井上古生界原油的地球化学特征及其与石炭系煤系烃源岩的亲缘关系研究，特别是与奥陶系原油、灰岩、下第三系原油饱和烃的甾、萜烷精细&指纹&对比研究后，我们认为孔古4井原油应属于上古生界煤系地层自生自储的原生油气藏，而并非下第三系抑或下古生界碳酸盐岩所生。

Biomarker parameters of transgressive member have specific characteristics:Pr/Ph less than 1,higher abundance of steranes,abundance of C27 are similar to C29 stertane,tricyclic terpane with feature of C21＜C23＞C24 and isotopic composition of n-alkanes enriched 12 C.

在生物标志化合物参数方面表现为Pr/Ph小于1，甾烷含量丰富，甾烷中C27化合物丰度与C29相当，三环萜烷有C21＜C23＞C24的分布特点，单体烃同位素表现出富集轻碳同位素的特点。

The marine crude oils in Huangqiao Area are characteristic of the high Pr/Ph value (＞1), the abundant tricyclic terpane series (tricyclic terpane series/hopane series＞0.8), the heavy carbon isotope and high δ〓C value (＞-29‰).

黄桥地区海相成因原油具有Pr/Ph＞1，三环萜烷系列丰度高(三环萜烷/藿烷系列＞0.8)，富含重碳同位素，δ〓C＞-29‰的特征。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。