查询词典 pristane

The characteristics of normal alkanes and the ratio of pristane to phytane are related to the sedimentary environments.

烃源岩和原油有机地球化学成分中的正烷烃特征与沉积环境类型有密切关系。

By using this strategy, we have found a dozen of susceptibility loci in different chromosomes and suscessfully identified Ncf1 as the gene located in Pia4 to regulate susceptibility to pristane induced arthritis of rats.

我们应用这一策略从朴日斯烷诱导的关节炎大鼠模型中已筛选出十余个控制关节炎发生发展的非MHC基因位点，在此基础上克隆的Pia4基因被鉴定为是中性粒细胞胞浆因子1(NCf1)。

The ratio of pristane to phytane is mainly used to determine the oxidation-reduction condition of the sedimentary environments.

姥鲛烷/植烷w(Pr/w值对于判断原始沉积环境氧化―还原条件有重要意义。

In the study, Pristane was been used with recombinant BLyS and BLC vector those can expressed in vivo in mice, the influence to SLE-like disease was investigate. Pristane associated with BLyS or BLC aggravates proteinuria. This fact indicates that the abnormal expression of the two genes has definite effect on mice lupus-like disease process.

本研究中，当Pristane与可在体内表达的重组BLyS或BLC基因质粒合用时，小鼠的蛋白尿明显加重，表明这两个基因的异常表达对小鼠的狼疮样病变过程有明显的影响。

Based on oil-gas distribution law, by means of correlation oil and sourcerock oil gonane isomeric parameter and relative content of pristane and tane, it draws to a conclusion that in west slope region oil of S oil layer mainly comes from K1qn sourcerock in Qijia-Gulong sag.

构造和构造-岩性油气藏主要分布在泰康隆起带的中南部；岩性上倾尖灭油气藏主要分布在富拉尔基地区。

Using GC/C/MS on-line carbon isotope analysis technique, we obtained the stable carbon isotope ratios of n-alkanes, iso-alkanes from the light hydrocarbon compositions and pristane, phytane in crude oils in Tarim basin.

本文利用新兴的原油单体烃类在线同位素分析技术测定了塔里木盆地原油及凝析油的正构烷烃、轻烃部分的异构烷烃和植烷、姥鲛烷的稳定碳同位素值。

The characteristics of coal-formed oil in Suqiao-Wenan are that saturated hydrocarbons amounts to about 80% of the bulk composition and Pristane/Phytane ratios more tha...

煤成油表现出饱和烃含量极其丰富、Pr/Ph值高(大于2)、三环萜烷以低碳数(C19～C21)化合物占优势并有递减变化趋势、C24四环萜烷丰富和伽马蜡烷含量低等地球化学特征。

In addition nC〓, nC〓, two isomers of C〓 sterene and three isomers of C〓 isoprenoid hydrocarbons were also identified from aliphatic fraction of pyrolyzed product at 200℃. After pyrolyzed at 300℃, the main aliphatic hydrocarbons were normal alkanes ranged from C〓 to C〓, with C〓 as the main peak and C〓 as the second main peak. Meanwhile, pristane, phytane and C〓 sterane were also detected. In the pyrolysates at 400℃ and 500℃, the content of saturated hydrocarbons decreased, the range of normal alkanes distribution became narrow and the main peak was nC〓. Low concentration of C〓-C〓 steranes was detected and the content of C〓-C〓 increased more.

在200℃热模拟产物饱和烃馏分中除检测出两种长链烯烃外，还检测到正十九碳单烯烃、正三十五碳双烯烃、两个碳二十八甾烯的同分异构体和三个C〓类异戊二烯烷烃化合物同分异构体。300℃模拟产物饱和烃主要为正烷烃，正烷烃的碳数分布范围为C〓-C〓，以C〓为主峰、C〓为次主峰；另外，样品中还检出姥鲛烷、植烷和C〓甾烷等化合物。400和500℃热模拟产物中的饱和烃含量下降，正烷烃系列碳数分布范围变窄，主峰碳后移至C〓，检测到低浓度的C〓-C〓甾烷系列化合物，另外，C〓-C〓藿烷系列化合物含量进一步增加。

Based on GC and GC-MS analyses, the geochemical characteristics of these typical deep viscous oils are listed as follows:(1) strong preference of even n-alkanes over odd n-alkanes;(2) strong preference of phytane over pristane, i. e. Pr/Ph ratio＜＜1;(3) high abundance of gammacerane relative to C〓hopanes;(4) much more amounts of C〓 pentakishomohopanes than C〓 tetrakishomohopanes and even C〓 trishomohopanes.

罗家—垦西地区稠油饱和烃色谱、色谱-质谱分析结果展示：(1)正构烷烃具有明显的偶奇优势；(2)类异戊二烯烷烃具有较强的植烷优势，姥姣烷/植烷比值远小于1；(3)伽玛蜡烷相对含量(相对于C30藿烷)普遍很高；(4)C35升藿烷明显高于C34、甚至C33升藿烷；表现出膏盐湖相生物标志物的组成特征。

The higher amount of gammacerane, relatively low value of Pr/Ph (pristane vs. phytane) and presence of dinosterane all suggest that the lake during the period of Qingshankou 1st formation deposition was subjected to salinity stratification, strong reducing deposition environment, and the potential marine transgression. The shales of Qingshankou 2nd3rd formations mainly contain typeI and typeII kerogens.

青一段泥岩有机质类型主要为Ⅰ型，较高的甾烷含量反映以藻类输入为主，较高的伽马蜡烷和低的Pr/Ph及甲藻甾烷的存在反映该时期水体具有盐度分层和强还原的沉积环境，可能与海侵有关。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。