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- Keywords Bozhong Sag;biomarker;gammacerane;tetracyclic terpane;origin type of oil; 渤中凹陷;生物標誌物;伽馬蠟烷;四環萜烷;原油成因類型;
- Limonoids are a group of highly oxygenated,tetracyclic triterpene secondary metabolites derivatives. 檸檬苦素類似物是一類高度氧化的四環三萜類植物次生代謝物質。
- 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. 從長20井低熟原油中檢測到了一定量的28,30二降藿烷,這說明源岩形成於極度厭氧的環境。
- Three tetracyclic triterpenoid acids,named ganoderic acids M1,M2,M3,were isolated from the fermentaion products by submerged fermentation of G. 從靈芝深層發酵產物中分離得到三種四環三萜酸,命名為靈芝酸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. 從各類天然氣中檢測出甾萜烷、芳烴和金剛烷等一系列生物標誌化合物,並進行了天然氣生標的應用研究探索。
- 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. 結論:耳穴按壓法治療痤瘡有良好療效,可能與降低血清睾酮水平有關。
- Three tetracyclic triterpenoid acids, named ganoderic acids M1, M2, M3, were isolated from the fermentaion products by submerged fermentation of G. lucidum. 從靈芝深層發酵產物中分離得到三種四環三萜酸,命名為靈芝酸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產物包括一元酸、二元酸、支鏈酸、三環萜烷酸、藿烷酸、甾烷酸和4甲基甾烷酸。鍵合在瀝青質中的烷基側鏈和生物標誌物不易遭受生物降解作用,特別是甾烷與飽和烴中分佈相似。
- 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. 據此,初步將這些參數應用於兩方面研究,一是為劃分地層沉積環境提供「生物標誌物相標誌」,二是研究油源對比,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. 本發明涉及達瑪烷型四環三萜類化合物為活性成分的藥物組合物及其在醫藥領域中的應用。
- 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. 色譜-質譜-質譜由於是兩級質譜串聯比色譜-質譜增加了選擇性,有了更強的分離能力,提高了對複雜混合物如甾、萜類化合物定性和定量的可靠性。
- Tetracyclic antidepressant Tetracy-clics 四環抗抑鬱劑
- diethenoid tetracyclic triterpene alcohol [化] 二烯系四環三萜烯醇
- Keywords B. javanica;tetracyclic triterpene;quassinoids;bruceine; 鴉膽子;四環三萜;苦木內酯;苦木素;
- Keywords Kashan Block;terpane;sterane;isoprenoidies;oil-gas migration; 卡山區塊;萜烷;甾烷;類異戊二烯;油氣運移;
- The terpane is dominated by penta-triterpanes and long-chain tricycloterpanes; 飽和烴含量高,飽和烴/芳香烴值大於3.;0
- Behavior of sterane and terpane molecular components in PVT fractionation experiment PVT分餾實驗中甾、萜烷分子的行為
- Keywords Internal standard method;n-alkane;sterane;terpane;biomarker;oil fingerprint;oil spill identification; 內標法;正構烷烴;甾烷;萜烷;生物標誌物;油指紋;溢油鑒別;
- Keywords Antibacterial agents;Thiazolothiazine incorporated tetracyclic fluoroquinolone;Synthesis; 抗菌劑;四環氟喹諾酮;合成;
- Keywords Botryococcus braunii;growing peroid;N-alkane;alkene;bicyclic terpane;GC/MS; 叢粒藻;生長時間;正構烷烴;直鏈烯烴;雙環萜烷;色質研究;