The occurrence characteristics of shale oil are of great significance to the movability of shale oil.In this study,the occurrence characteristics of oil in the shale matrix at Funing Formation shale in Subei Basin wer...The occurrence characteristics of shale oil are of great significance to the movability of shale oil.In this study,the occurrence characteristics of oil in the shale matrix at Funing Formation shale in Subei Basin were quantitatively evaluated by organic geochemistry and microscopic pore structure characterization experiments.The Multiple Isothermal Stages Pyrolysis(MIS)experiment results show that the content of total oil,adsorbed oil,and free oil in the shales are 3.15-11.25 mg/g,1.41-4.95 mg/g,and 1.74-6.51 mg/g,respectively.among which the silicon-rich shale has the best oil-bearing.The relative content of free oil shows an increasing trend in pores with pore diameters greater than 3 nm.When the relative content of free oil reaches 100%,the pore size of silicon-rich shale is about 200 nm,while that of calcium-rich shale,clay-rich shale,and siliceous mixed shale is about 10 nm.The occurrence law of adsorbed oil is opposite to that of free oil,which indicates that shale oil will occur in the pores and fractures in a free state in a more extensive pore size range(>200 nm).This study also enables us to further understand the occurrence characteristics of shale oil under the interaction of occurrence state and occurrence space.展开更多
羊草在我国内蒙古草原广泛分布,是重要的乡土牧草,然而关于羊草矿质营养吸收的分子机制尚未受到广泛关注。关于ZIP家族在植物吸收和转运必需微量元素和重金属过程中的作用,在模式植物和农作物中研究较多。本研究从羊草转录组数据库中筛...羊草在我国内蒙古草原广泛分布,是重要的乡土牧草,然而关于羊草矿质营养吸收的分子机制尚未受到广泛关注。关于ZIP家族在植物吸收和转运必需微量元素和重金属过程中的作用,在模式植物和农作物中研究较多。本研究从羊草转录组数据库中筛选到一个与ZIP同源的基因Lc206852,发现其与拟南芥ZIP家族的Zn^(2+)转运蛋白AtZIP1亲缘关系较近,因此将其命名为LcZIP1。利用TMHMM Server v.2.0进行跨膜域分析发现,LcZIP1是一种跨膜蛋白,有9个跨膜域,与禾本科短柄草属植物ZIP亲缘关系最近。将LcZIP1-GFP瞬时转染烟草叶表皮细胞和羊草叶原生质体进行亚细胞定位,发现LcZIP1定位于内质网。通过实时荧光定量PCR分析发现,缺铁、高铁和高锌环境可诱导LcZIP1表达,表明LcZIP1参与环境中Zn和Fe营养水平的响应。最后通过酵母功能互补试验证明,LcZIP1在低铁条件下能够使低铁敏感酵母突变体(△fet3/△fet4)恢复生长,暗示LcZIP1具有Fe^(2+)转运功能。以上结果对日后开发和利用微量元素强化农作物品质具有一定的参考价值。展开更多
基金This work was financially supported by the National Natural Science Foundation of China(41972123,41922015)the Natural Science Foundation of Shandong Province(ZR2020QD036).
文摘The occurrence characteristics of shale oil are of great significance to the movability of shale oil.In this study,the occurrence characteristics of oil in the shale matrix at Funing Formation shale in Subei Basin were quantitatively evaluated by organic geochemistry and microscopic pore structure characterization experiments.The Multiple Isothermal Stages Pyrolysis(MIS)experiment results show that the content of total oil,adsorbed oil,and free oil in the shales are 3.15-11.25 mg/g,1.41-4.95 mg/g,and 1.74-6.51 mg/g,respectively.among which the silicon-rich shale has the best oil-bearing.The relative content of free oil shows an increasing trend in pores with pore diameters greater than 3 nm.When the relative content of free oil reaches 100%,the pore size of silicon-rich shale is about 200 nm,while that of calcium-rich shale,clay-rich shale,and siliceous mixed shale is about 10 nm.The occurrence law of adsorbed oil is opposite to that of free oil,which indicates that shale oil will occur in the pores and fractures in a free state in a more extensive pore size range(>200 nm).This study also enables us to further understand the occurrence characteristics of shale oil under the interaction of occurrence state and occurrence space.
文摘羊草在我国内蒙古草原广泛分布,是重要的乡土牧草,然而关于羊草矿质营养吸收的分子机制尚未受到广泛关注。关于ZIP家族在植物吸收和转运必需微量元素和重金属过程中的作用,在模式植物和农作物中研究较多。本研究从羊草转录组数据库中筛选到一个与ZIP同源的基因Lc206852,发现其与拟南芥ZIP家族的Zn^(2+)转运蛋白AtZIP1亲缘关系较近,因此将其命名为LcZIP1。利用TMHMM Server v.2.0进行跨膜域分析发现,LcZIP1是一种跨膜蛋白,有9个跨膜域,与禾本科短柄草属植物ZIP亲缘关系最近。将LcZIP1-GFP瞬时转染烟草叶表皮细胞和羊草叶原生质体进行亚细胞定位,发现LcZIP1定位于内质网。通过实时荧光定量PCR分析发现,缺铁、高铁和高锌环境可诱导LcZIP1表达,表明LcZIP1参与环境中Zn和Fe营养水平的响应。最后通过酵母功能互补试验证明,LcZIP1在低铁条件下能够使低铁敏感酵母突变体(△fet3/△fet4)恢复生长,暗示LcZIP1具有Fe^(2+)转运功能。以上结果对日后开发和利用微量元素强化农作物品质具有一定的参考价值。
