米槁精油粘度测量及关联

用旋转粘度计对水蒸气法和超临界CO2萃取法提取的米槁精油流变特性进行了研究,测定了不同温度下米槁精油的粘度,并用Andrade方程对实验验结果进行了关联。与实验结果相比,两个关联方程的平均相对偏差分别4.17%和2.85%。     

玫瑰茄挥发油的GC-MS分析及其抗菌活性研究

目的:研究玫瑰茄挥发油成分及其抑菌活性.方法:运用常规水蒸气蒸馏法提取玫瑰茄挥发油,采用气相色谱-质谱联用(GC-MS)的方法分析、鉴定其化学成份,并采用琼脂稀释法对其挥发油进行抗茵活性测试.结果:通过GC-Ms共鉴定出48个化学成分,且抑茵实验表明8种菌株为敏感菌株.结论:该研究为玫瑰茄的进一步应用与开发提供了科学依据.     

Immature crude oils in the salt lake depositional environment are related to organic matter precipitated at stage of carbonate in salt lake sedimentation sequences

The present paper studies the mineralogy and geochemistry of a geological section in Jianghan basin. Widely distributed immature oils in this basin have been shown to relate to the carbonate depositional stage of salt lake sedimentation cycle. It is concluded that only when the content of organic carbon in the rocks is taken into account, is it meaningful to calculate the immature oil in the source rocks.     

Sequential extraction and compositional analysis of oil-bearing fluid inclusions in reservoir rocks from Kuche Depression, Tarim Basin

The free oils, adsorbed oils and oil-bearing fluid inclusions have been extracted separately and analyzed by GC and GC-MS in reservoir rock samples collected from the Kuche Depression. The results demonstrate that the molecular compositions of oil-bearing fluid inclusions are significantly different from those of the free oils (the current oils). Compared with the current oil, the oil-bearing fluid inclusions are characterized by relatively high values of parameters Pr/nC17and Ph/nC18, low values of Pr/Ph, hopanes/steranes, C30-diahopane/C30-hopane and Ts/Tm, low content of C29Ts terpane and high maturities as indicated by C29 steranes 20S/(20R+20S). In addition, the oil-bearing fluid inclusions correlate very well with the oils in northern and central Tarim Basin, which were derived from Cambrian-Ordovician marine source rocks. The adsorbedoils appear to be an intermediate type between free oils and oil-bearing fluid inclusions. The above analytical data indicate that there are at least two oil-charging episodes for these reservoir rock samples. The early charging oils were derived from Cambrian-Ordovician marine source rocks, and the later charging oils, from Triassic-Jurassic terrestrial source rocks. The primary marine oils were overwhelmingly diluted by the following terrestrial oils.     

萼果香薷精油的化学成分

采用ＧＣ－ＭＳ联用技术分析了萼果香薷的精油成分,通过ＩＮＣＯＳ数据系统检索及与质谱资料核对,共鉴定出２８个化学成分,占精油总成分的５６．８％。     

英国爱丁堡皇家植物园石山园中杜鹃调查报告

调查了英国爱丁堡皇家植物园石山园中的杜鹃,计有４７个分类群,隶属于１７个亚组（或组,有的组无亚组）,其中高山杜鹃亚组２１种,火红杜鹃亚组６种,怒江杜鹃亚组５种,大理杜鹃亚组２种,其他皆为１种。高山杜鹃亚组在石山园中具有最多的种类。     

冷热原油交替顺序输送中加热时机的经济比选

冷热原油交替顺序输送是原油输送领域的新工艺,其中确定经济加热方案是工程应用的关键技术之一。建立了冷热油交替输送管道的水力、热力计算模型,用有限容积法和热力特征线法对非稳态热力、水力耦合问题进行求解,并用国内某原油管道现场实测数据对程序进行了检验。基于加热能耗最小,建立了加热方式经济比选的计算模型。数值模拟了不同的加热方案,计算了低凝油不同加热时机的加热能耗。结果表明：对低凝油油尾提前适当时间加热可大大节省加热能耗;加热能耗随加热时机的延长先下降后上升,最佳加热时机约为10％。     

超临界二氧化碳萃取鄂西烤烟挥发油的研究

采用正交实验法对超临界CO2萃取鄂西烤烟挥发油的条件进行了研究.考察了萃取温度、压力、CO2流量等因素对鄂西烤烟挥发油提取率的影响.得到了超临界CO2萃取鄂西烤烟挥发油的最佳实验条件:萃取压力15MPa、温度40℃、CO2流量45kg·h-1和时间80min,得率为2 86%.水蒸汽蒸馏提取率为0 96%.超临界CO2萃取的收率高,萃取时间短.     

新型固体润滑剂的研制及其在汽油机油中的应用

在分析国内高级轿车润滑油生产现状的基础上，介绍了作者近年来进行高级轿车润滑油的研制情况，以及利用自制的固体润滑剂调配的一种汽油机油，本文以用户使用情况为依据，分析了该种润滑油的特点。     

银离子络合法分离鱼油中 EPA 和 DHA

对银离子与碳－碳双键的络合机理进行了论述,并综述了基于该络合机理,分离鱼油中ＥＰＡ、ＤＨＡ的三种方法：ＡｇＮＯ３层析法、ＡｇＮＯ３络合法结合超临界ＣＯ２萃取法和ＡｇＮＯ３膜分离法．