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- Keywords Bozhong Sag;biomarker;gammacerane;tetracyclic terpane;origin type of oil; 渤中凹陷;生物标志物;伽马蜡烷;四环萜烷;原油成因类型;
- Limonoids are a group of highly oxygenated,tetracyclic triterpene secondary metabolites derivatives. 柠檬苦素类似物是一类高度氧化的四环三萜类植物次生代谢物质。
- 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. 从长20井低熟原油中检测到了一定量的28，30二降藿烷，这说明源岩形成于极度厌氧的环境。
- Three tetracyclic triterpenoid acids,named ganoderic acids M1,M2,M3,were isolated from the fermentaion products by submerged fermentation of G. 从灵芝深层发酵产物中分离得到三种四环三萜酸,命名为灵芝酸M1,M2,M3。
- The biomarker of steran,terpane,aromatic and adamantanewere detected by thls method from any kind of natural gas, and the gas-biomarkerapplication was approached. 从各类天然气中检测出甾萜烷、芳烃和金刚烷等一系列生物标志化合物，并进行了天然气生标的应用研究探索。
- Conclusion: The ear points pressing combined with oral tetracycl ine was a good way in freatment of female acne, which can be used in clinic practice. 结论:耳穴按压法治疗痤疮有良好疗效,可能与降低血清睾酮水平有关。
- Three tetracyclic triterpenoid acids, named ganoderic acids M1, M2, M3, were isolated from the fermentaion products by submerged fermentation of G. lucidum. 从灵芝深层发酵产物中分离得到三种四环三萜酸，命名为灵芝酸M1, M2, M3。
- The asphaltene RICO products include n-alkan acids, di-n-alkan acids, branched alkan acids, tricyclic terpan acids, hopanoic acids, steran acids and 4-methyl steran acids. 其RICO产物包括一元酸、二元酸、支链酸、三环萜烷酸、藿烷酸、甾烷酸和4甲基甾烷酸。键合在沥青质中的烷基侧链和生物标志物不易遭受生物降解作用,特别是甾烷与饱和烃中分布相似。
- The composition of regular sterane suggests the different times, while distribution pattern of tricyclic terpane and abundance of diahopanes indicate the discrepancies of sedimentary environments. 据此，初步将这些参数应用于两方面研究，一是为划分地层沉积环境提供“生物标志物相标志”，二是研究油源对比，取得良好效果。
- The invention relates to a pharmaceutical composition with dammarane-type tetracyclic triterpene compound as an active component and an application thereof to the pharmaceutical field. 本发明涉及达玛烷型四环三萜类化合物为活性成分的药物组合物及其在医药领域中的应用。
- Through comparing experiments, it was found that this method has special dominance in checking trace biomarkers and in determining nature and fixing quantity of a complex sterane and terpane. 色谱-质谱-质谱由于是两级质谱串联比色谱-质谱增加了选择性,有了更强的分离能力,提高了对复杂混合物如甾、萜类化合物定性和定量的可靠性。
- Tetracyclic antidepressant Tetracy-clics 四环抗抑郁剂
- diethenoid tetracyclic triterpene alcohol [化] 二烯系四环三萜烯醇
- Keywords B. javanica;tetracyclic triterpene;quassinoids;bruceine; 鸦胆子;四环三萜;苦木内酯;苦木素;
- Keywords Kashan Block;terpane;sterane;isoprenoidies;oil-gas migration; 卡山区块;萜烷;甾烷;类异戊二烯;油气运移;
- The terpane is dominated by penta-triterpanes and long-chain tricycloterpanes; 饱和烃含量高，饱和烃／芳香烃值大于3.;0
- Behavior of sterane and terpane molecular components in PVT fractionation experiment PVT分馏实验中甾、萜烷分子的行为
- Keywords Internal standard method;n-alkane;sterane;terpane;biomarker;oil fingerprint;oil spill identification; 内标法;正构烷烃;甾烷;萜烷;生物标志物;油指纹;溢油鉴别;
- Keywords Antibacterial agents;Thiazolothiazine incorporated tetracyclic fluoroquinolone;Synthesis; 抗菌剂;四环氟喹诺酮;合成;
- Keywords Botryococcus braunii;growing peroid;N-alkane;alkene;bicyclic terpane;GC/MS; 丛粒藻;生长时间;正构烷烃;直链烯烃;双环萜烷;色质研究;
