Distribution and sources of steranes and pentacyclic triterpanes in surface soils and bottom sediments from Tianjin;
天津地区表层土壤和河流沉积物中甾烷与五环三萜烷的分布特征及污染源分析
Direct evidence of sterane and 4-methyl-sterane originating from plant pollens in organic deposit;
沉积有机质中甾烷、4-甲基甾烷植物花粉来源的直接证据
The biodegradation of regular sterane and rearranged sterane in crude oil was studied on the basis of simulated biodegradation experiment to the crude oil.
通过喜氧细菌对原油的模拟生物降解实验,以及对模拟产物的饱和烃色谱—质谱分析,对原油饱和烃中规则甾烷和重排甾烷的降解作用进行了研究。
Study on steranes as a indicator of oil spills;
甾烷作为溢油指示物(或指标)的研究
Study on Steranes as Indicators of Spilled Oi1s by Fuzzy Clustering Analysis;
甾烷作为溢油指示物的模糊聚类分析研究
The results of pyrolysis experiments, performed in confined system (gold capsule) demonstrate that maturation behaviors of hopanes (hopenes) and steranes released from kerogen change substantially with the variation of water amount and mineral nature.
C3122S/(22R+22S)升藿烷和C2920S/(20R+20S)和C29αββ/(ααα+αββ)甾烷比值都先从240℃至280℃降低,然后从280℃至320℃升高。
The preliminary results show that samples of both categories contained plasticizers,n-alkanes,polycyclic aromatic hydrocarbons(PAHs),oxy-PAHs,and minor amounts of terpanes and steranes.
比较了2006年春季沙尘天气和非沙尘天气吸附到TSP样品中增塑剂、正构烷烃、多环芳烃(PAHs)、甾烷和藿烷类等有机污染组分特征。
The GC/MS analyses for alkanes from Late Jurassic source rocks of the Liudong depression,Kailu Basin,northeastern China showed that the concentration of diasteranes in some samples decreases anomalously with depth,suggesting that in this case the formation of these compounds may be not depended on maturity.
陆东凹陷上侏罗统生油岩样品饱和烃色质分析表明，重排甾烷随井深出现含量下降的逆转现象，表明热演化不完全是这类化合物形成的主要控制因素。
Advances in studies on physiological metabolic regulating effects and mechanisms of sterol and stanol from plants;
植物甾醇及甾烷醇的生理代谢调节功能及其机制研究进展
2-(9-Carbazole)acetyl chloride, a novel fluorescence derivatization reagent, has been developed for the determination of sterols and stanol.
采用荧光衍生化试剂2-(9-咔唑)乙酰氯,对天然产物谷甾醇、豆甾醇、菜油甾醇及谷甾烷醇的柱前衍生化条件,包括催化剂的种类、反应温度、衍生化时间等进行了考察,结果表明:催化剂选用三乙胺,反应温度80℃,时间20min,衍生产物具有恒定的最大检测响应值。
Determination of sitostanol in phytosterol samples by GC—MS;
GC—MS法测定植物甾醇样品中的谷甾烷醇
85%,w(sitostanol)=93.
以豆甾醇为原料、Pd/C为催化剂,通过常压催化氢化制备谷甾烷醇。
Process Improvement on the Synthesis of C-nor-D-homo Sapogenin
C-去甲-D-高甾烷的合成工艺改进
Identification of C_(19)-C_(29) Steranes and 25-norhopanes in Source Rock and Geological Significance
烃源岩中C_(19)～C_(29)甾烷系列和25-降藿烷系列的检出及其地质意义
Assignment of 2β,16β-dipiperidino-5α-androstan-3α-ol-17-one in NMR
2β,16β-双哌啶基-5α-雄甾烷-3α-醇-17-酮的化学位移指认
The Activation of NF-κB Mediated by 7-ketocholesteryl-9-carboxynonanoate Associated with Inflammation
7-酮基胆甾醇-9-羧基壬烷介导的NF-κB活化与炎症的发生
Liquid Crystalline Properties of Siloxanes Polymer Containing Carboxylic Acid and Cholesteric Groups
含羧酸与胆甾基元的硅氧烷类聚合物的液晶性能
Two new polyhydroxylated sterols from the mangrove fungus Aspergillus awamori and the endo-boat conformation adopted by cyclohexene oxide system
红树林真菌泡盛酒曲霉中两个新的甾类成分及环氧环己烷体系特殊构象研究
A polar capillary column was used to separate the cholesterol from phytosterol.
植物油中主要含有谷甾醇、豆甾醇、菜油甾醇等多种植物甾醇。
A steroid containing a ketone group.
酮甾含酮基的甾类化合物
Synthesis of pregna-3,6,20-trioxime and pregna-6,20-dione-3-oxime
孕甾-3,6,20-三肟和孕甾-6,20-二酮-3-肟的合成
Determination of the Content of β-Sitosterol and Stigmasterol in Phytosterols by UV Spectral Method
混合甾醇中β-谷甾醇和豆甾醇的紫外光谱法分析测定
Extraction of Phytosterols from Filter Mud of Sugarcane Factory and Seperation of Stigmasterol and β-Sitosterol;
甘蔗糖厂滤泥中植物甾醇的提取及豆甾醇和β-谷甾醇的分离
primary aldosteronism
原发性醛甾酮增多症
22,23-dihydroergosteryl acetate
22,23-二氢麦角甾醇乙酸酯
cholesteric-nematic phase transition
胆甾相－向列相相转变
trihydroxy isosterocholenic acid
三羟基异甾族胆烯酸
trihydroxybufosterocholenic acid
三羟基蟾蜍甾族胆烯酸
7-dehydrocholesterol acetate
7-脱氢胆甾醇乙酸酯
esteryl oleoyl carbonate
胆甾醇油酰基碳酸酯