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| 1 | Timing and history of marine hydrocarbon accumulation in Tarim craton显示文摘Based on the analyses of hydrocarbon inclu-sions, K-Ar dating of authigenic illites and oil/gas-watercontact retrospection as well as other methods, the marineprimary reservoirs in the cratonic region of the Tarim Basinare found to have been formed in the late Caledonian toearly Hercynian, late Hercynian, and Himalayan, and oil andgas adjusted and redistributed in the Yanshanian (Jurassic toCretaceous) and Himalayan (Tertiary). The analyses alsoshow that the remaining primary oil accumulations aremostly formed in the late Hercynian, and the secondary oilreservoirs resulted from the adjustment and redistribution ofthe earlier accumulations during the Yanshanian and Hima-layan (especially late Himalayan), of which the Himalayan isalso the major stage of gas accumulation. The primary oilreservoirs formed in the late Hercynian mostly occur withinthe Paleozoic formation, whereas the secondary reservoirsformed in the Himalayan in the Mesozoic. The late adjust-ment and redistribution of reservoirs in the craton region ofthe Tarim Basin is ubiquitous because of the intensified tec-tonic movements since the Mesozoic, especially Cenozoic andintrusion of the high- to over-mature gas. Furthermore, thelower amplitude of reservoirs in the craton region also makesthem easier to be adjusted and redistributed. Therefore, theremaining paleo-uplift and palaeo-slope developed in rela-tively stable tectonic regions are the main potential areas forthe middle-large marine reservoirs in the Tarim Basin. | ZHAO Jingzhou~(1,2) & LI Qiming~3 1. Department of Petroleum Geology, Xi’an Petroleum Institute, Xi’an 710065, China 2. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China 3. Tarim Oilfield Company, Kuerle, Xinjiang 841000, China | 2002 | Chinese Science Bulletin2002，47，S1： | 5 |
| 2 | Formation of calcium phosphate mineral material controlled by microemulsion显示文摘In order to prepare calcium phosphate-based material with nano-structure and bioactivity, natural lecithin and n-tetradecane were used as the amphipile and the oil phase respectively, along with the water phase, to form a microemulsion template. Phosphate mineralization was induced and controlled by the microemulsion. The products, characterized by scanning electronic microscopy, infrared spectroscopy and X-ray diffraction analysis, are composed of lecithin and hydroxyapatite, and possess the nano-structure of sticks, balls and three-dimensional nets connected by tubes. These results show that the microemulsion can be used to control calcium phosphate mineralization for the preparation of biomimetic mineral materials with various nano-structures. | LIU Jingzhou, GOU Baodi, XU Shanjin and WANG Kui(1. College of Material Science, Shanxi Normal University, Xi’an 710062, China 2. Department of Chemical Biology, Peking University School of Pharmaceutical Sciences, Beijing 100083, China) | 2002 | Progress in Natural Science:Materials International2002，12，8： | 2 |
| 3 | Selenium nanoparticles derived from Proteus mirabilis YC801 alleviate oxidative stress and inflammatory response to promote nerve repair in rats with spinal cord injury显示文摘Microbial biotransformation and detoxification of biotoxic selenite into selenium nanoparticles(SeNPs)has emerged as an efficient technique for the utilization of selenium.SeNPs are characterized by high bioavailability and have several therapeutic effects owing to their antioxidant,anti-inflammatory and neuroprotective activities.However,their influence onmicroenvironment disturbances and neuroprotection after spinal cord injury(SCI)is yet to be elucidated.This study aimed to assess the influence of SeNPs on SCI and explore the underlying protective mechanisms.Overall,the proliferation and differentiation of neural stem cells were facilitated by SeNPs derived from Proteus mirabilis YC801 via the Wnt/b-catenin signaling pathway.The SeNPs increased the number of neurons to a greater extent than astrocytes after differentiation and improved nerve regeneration.A therapeutic dose of SeNPs remarkably protected the integrity of the spinal cord to improve the motor function of the hind limbs after SCI and decreased the expression of several inflammatory factors such as tumor necrosis factor-a and interleukin-6 in vivo and enhanced the production of M2-type macrophages by regulating their polarization,indicating the suppressed inflammatory response.Besides,SeNPs reversed the SCI-mediated production of reactive oxygen species.In conclusion,SeNPs treatment holds the potential to improve the disturbed microenvironment and promote nerve regeneration,representing a promising therapeutic approach for SCI. | Xiangyu Liu Yingji Mao Shengwei Huang Weifeng Li Wei Zhang Jingzhou An Yongchao Jin Jianzhong Guan Lifang Wu Pinghui Zhou | 2022 | Regenerative Biomaterials2022，9，1： | 0 |
| 4 | Pool-formation and secondary change of biodegraded viscous oils:Case study of reservoir section in the ZhengjiaWangzhuang Oilfield, Jiyang Depression显示文摘It is demonstrated by various geochemical indexes that the Zhengjia-Wangzhuang Oilfield with viscous crude oil in the Jiyang Depression has been sourced from the contribution of matured source rocks in the upper Es4. The principal cause leading to the densification of crude oils would be biodegradation, with the degradation level of crude oils being ranked as 2-8; vertically, the biodegradation level increases from the top to bottom of the oil column, with a distinctive biodegradation gradient occurring. Calculated parameters of sterane, terpane and methyl-phenanthrene have indicated that the source-rock’s maturity of crude oils and asphaltic sands ranges from 0.7 to 0.9, and based on the calculation of Easy Ro model, the temperature of hydrocarbon generation in the source rock would be within 120-140℃, which coincides with the measurements of reservoir inclusions. The measured homogenization temperature would represent the generation temperature of the source rock, and be fairly different from that | WANG Zhenqi, PENG Ping’an, YU Chiling, LU Hong, ZOU Yanrong, ZHANG Linye & LIU Junmin State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China Department of Earth Science, Yangtze University, Jingzhou 434023, China Research Institute of Geology, Shengli Oilfield Co. Ltd., SINOPEC, Dongying 257015, China | 2004 | Chinese Science Bulletin2004，49，S1： | 0 |
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