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Differences and identification on multi-time hydrocarbon generation of carboniferous-permian coaly source rocks in the Huanghua Depression,Bohai Bay Basin

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Petroleum Science 2024年第2期21卷 765-776页

作者： Jin-Jun Xu Xian-Gang Cheng Shu-nan peng Jun-Cai Jiang Qi-Long Wu Da Lou Fu-Qi Cheng La-Mei Lin National Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580ShandongChina PetroChina Dagang Oilfield Company Tianjin300280China

Coal is a solid combustible mineral,and coal-bearing strata have important hydrocarbon generation potential and contribute to more than 12%of the global hydrocarbon resources.However,the deposition and hydrocarbon evolution process of ancient coal-bearing strata is characterized by multiple geological times,leading to obvious distinctions in their hydrocarbon generation potential,geological processes,and production,which affect the evaluation and exploration of hydrocarbon resources derived from coaly source rocks worldwide.This study aimed to identify the differences on oil-generated parent macerals and the production of oil generated from different coaly source rocks and through different oil generation processes.Integrating with the analysis of previous tectonic burial history and hydrocarbon generation history,high-temperature and high-pressure thermal simulation experiments,organic geochemistry,and organic petrology were performed on the Carboniferous-Permian(C-P)coaly source rocks in the Huanghua Depression,Bohai Bay Basin.The oil-generated parent macerals of coal's secondary oil generation process(SOGP)were mainly hydrogen-rich collotelinite,collodetrinite,sporinite,and cutinite,while the oil-generated parent macerals of tertiary oil generation process(TOGP)were the remaining small amount of hydrogen-rich collotelinite,sporinite,and cutinite,as well as dispersed soluble organic matter and unexhausted residual hydrocarbons.Compared with coal,the oil-generated parent macerals of coaly shale SOGP were mostly sporinite and cutinite.And part of hydrogen-poor vitrinite,lacking hydrocarbon-rich macerals,and macerals of the TOGP,in addition to some remaining cutinite and a small amount of crude oil and bitumen from SOGP contributed to the oil yield.The results indicated that the changes in oil yield had a good junction between SOGP and TOGP,both coal and coaly shale had higher SOGP aborted oil yield than TOGP starting yield,and coaly shale TOGP peak oil yield was lower than SOGP peak oil yield.There were significa

关键词： Thermal simulation Multi-time oil generation processes Coaly source rock Carboniferous-permian Huanghua Depression

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基于PCA-SVM结合共聚焦拉曼光谱的特级初榨橄榄油掺伪压榨菜籽油定量分析

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中国油脂 2024年第2期49卷 70-74页

作者：彭楠方俊毛潭北京京北职业技术学院北京101400 北方工业大学北京100144

为了促进国内橄榄油市场的健康发展,对掺伪同样存在天然类胡萝卜素的低温压榨菜籽油的特级初榨橄榄油进行了定量鉴别研究。采用共聚焦拉曼光谱技术对不同掺伪浓度油样进行测试,基于密度泛函理论对油样的拉曼光谱峰的归属进行了理论分析... 详细信息

为了促进国内橄榄油市场的健康发展,对掺伪同样存在天然类胡萝卜素的低温压榨菜籽油的特级初榨橄榄油进行了定量鉴别研究。采用共聚焦拉曼光谱技术对不同掺伪浓度油样进行测试,基于密度泛函理论对油样的拉曼光谱峰的归属进行了理论分析,并对拉曼光谱数据进行主成分分析(PCA),然后利用支持向量机(SVM)构建PCA-SVM模型。另外,对PCA-SVM模型的检出限进行了研究。结果表明:特级初榨橄榄油与低温压榨菜籽油的拉曼光谱存在一定差异,最明显的光谱差异主要集中在谱峰1008、1161、1528 cm^(-1)和谱段2800~3000 cm^(-1)内,与密度泛函理论对不同油样拉曼光谱峰的分析一致;不考虑类胡萝卜素特征信号建立的PCA-SVM模型决定系数大于0.989,均方根误差小于2.990%,检出限为2%(低温压榨菜籽油体积分数);在特级初榨橄榄油掺伪定量分析中,考虑类胡萝卜素的特征信号有助于提高模型预测精度,但仅限于掺伪低价植物油中无类胡萝卜素存在的情况;PCA-SVM模型在不考虑类胡萝卜素特征信号的情况下依然具有良好的定量预测效果。综上,所建立的PCA-SVM模型可以用于掺伪2%以上低温压榨菜籽油的特级初榨橄榄油的定量鉴别。

关键词：特级初榨橄榄油低温压榨菜籽油 PCA-SVM 拉曼光谱密度泛函理论

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高校学生党支部依托网络开展党建的创新研究——以学生党支部开展时政评论为例

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卫生职业教育 2024年第1期42卷 25-28页

作者：彭楠上海健康医学院上海201318

高校学生党支部有培养理论扎实、信仰坚定大学生党员的责任。在新时期依托网络开展党建,对高校学生党建工作有重要意义。通过让支部学生党员在“学习强国”平台、“共产党员”网、“上海基层党建”公众号学习,选取时政热点进行评论,提... 详细信息

高校学生党支部有培养理论扎实、信仰坚定大学生党员的责任。在新时期依托网络开展党建,对高校学生党建工作有重要意义。通过让支部学生党员在“学习强国”平台、“共产党员”网、“上海基层党建”公众号学习,选取时政热点进行评论,提高学生党员理论知识学习的自觉性、关注时政意识、支部朋辈的影响力,使学习型党支部建设与学风建设紧密联系在一起。

关键词：学生党支部时政评论网络

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Chemical composition and phytotoxic activity of the volatile oil of invasive Xanthium italicum Moretti from Xinjiang,China

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Journal of Arid Land 2013年第3期5卷 324-330页

作者： Hua SHAO YuanMing ZHANG peng nan XiaoLi HUANG Chi ZHANG Key Laboratory of Biogeography and Bioresource in Arid Land Xinjiang Institute of Ecology and GeographyChinese Academy of Sciences Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering School of Life SciencesFudan University State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of Sciences

Aerial parts of Xanthium italicum in an air tight container greatly inhibited root elongation of radish, implying that this invasive plant could release biologically active volatile organic compounds （VOCs） into the environment to affect other plants＇ growth. This phenomenon was further studied by evaluating the phytotoxic effects of X. italicum essential oil against two dicot plants, amaranth （Amaranthus mangostanus L.） and lettuce （Lectuca sativa L.）, and two monocot plants, wheat （Triticum aestivum Linn） and ryegrass （Lolium multiforum）, and analyzing the chemical composition of the oil. Among the 4 test species, amaranth was the most sensitive plant, 0.5μl/mL essential oil application resulted in a 50% reduction on root elongation, and 2.5 μl/mL essential oil almost completely inhibited its seedling growth. Wheat was the least sensitive species, whose root growth was reduced to 36% of control by 5 μl/mL essential oil. The essential oil exerted moderate inhibitory effect on both lettuce and ryegrass. Compared to a commercial herbicide-Harness, X. italicum oil exhibited stronger phytotoxicity on amaranth, lettuce and wheat, but weaker activity on ryegrass. The chemical composition of the essential oil isolated by hydrodistillation from the aerial parts of X. italicum Moretti was analyzed by GC/MS. Thirty two compounds were identified, representing 94.89% of total oil, which was found to be rich in monoterpene hydrocarbons （60.71%）. The main constituents of the oil were limonene （51.61%）, germacrene B （6.98%）, 6-cadinol （5.94%）, β-pinene （5.23%）, α-caryophyllene （5.1%） and bornyl acetate （3.15%）. Bioassay revealed the dominant constituent-limonene, was unlikely the responsible phytotoxic compound due to its low biological activity; rather, there might be other oil constituent（s） that either act alone, or work together, and possibly assisted by synergistic effect, to display the phytotoxic activity. Our results suggested that X. italicum might produce allelopathic VOCs to facilitate its invasion success. This is

关键词： allelopathy phytotoxicity essential oil volatile organic compounds Xanthium italicum

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Stratigraphy and Geochronology of Vertebrate Fossil-Bearing Jurassic Strata from Linglongta,Jianchang County,Western Liaoning,Northeastern China

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Acta Geologica Sinica(English Edition) 2012年第6期86卷 1326-1339页

作者： peng nan LIU Yongqing KUANG Hongwei JIANG Xiaojun XU Huan Institute of Geology Chinese Academy of Geological Sciences School of the Earth Science and Resources China University of Geosciences

Northeastern China contains widely distributed Jurassic terrestrial strata that have yielded many spectacular mammal and pterosaur fossils, in addition to feathered dinosaur fossils and more recent discoveries from Jianchang, particularly from western Liaoning. However, the fossil-bearing stratigraphic succession, regional correlation, and age estimates of the fossils found in Jianchang County and nearby areas have been contentious. Here, we report on the vertebrate fossil-bearing Jurassic stratigraphy from Linglongta, Jianchang County, western Liaoning, including a SHRIMP U-Pb zircon date unambiguously associated with the fossil horizons. The primary goal was to determine the vertebrate fossil-bearing succession. A further aim was to provide age estimations for the fossil-bearing horizon as well as the earliest appearance of feathered dinosaurs, the eutherian-placental clade, and transitional pterosaurs. Field investigations showed that the vertebrate fossil-bearing stratigraphic succession in Jianchang County mainly consists of basal andesites overlain by rhythmic tufts and tuffaceous lacustrine sediments, with the upper intermediate or acidic lavas interbedded with laminated more or less tuffaceous lacustrine deposits. This sequence correlates well with the Middle Jurassic Lanqifl＇iaojishan Formation in northeastern China. Detailed and accurate field observations showed that the well- preserved vertebrate fossils were buried in either the middle or the upper fine-grained laminated lacustrine deposits. Previous and current SHRIMP U-Pb zircon dates provide an age estimation of 161- 159 Myr for the fossil-bearing horizon and vertebrates. This indicates that the earliest appearance of feathered dinosaurs here was more than 159 Myr ago and unquestionably older than Archaeopteryx from Germany, making these the earliest known feathered dinosaurs in the world. Furthermore, the eutherian-placental clade and the known transitional pterosaurs first emerged no later than 161 Myr. The vertebrate assemblage unearthed recent

关键词： Jurassic vertebrates stratigraphy geochronology northeastern China

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多输入多输出雷达搜索模式下5G毫米波射频算法

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吉林大学学报（工学版） 2024年第3期54卷 836-841页

作者：黄志祥彭照楠侯学师陈谦安徽大学电子信息工程学院合肥230601

为提升毫米波在射频传输中的传输安全,提出了多输入多输出(MIMO)雷达搜索模式下5G毫米波射频算法。根据5G毫米波的传输特性,获取了MIMO雷达搜索模式的雷达截获因子,建立了毫米波射频隐身模型并获取目标函数,计算了雷达搜索模式的射频截... 详细信息

为提升毫米波在射频传输中的传输安全,提出了多输入多输出(MIMO)雷达搜索模式下5G毫米波射频算法。根据5G毫米波的传输特性,获取了MIMO雷达搜索模式的雷达截获因子,建立了毫米波射频隐身模型并获取目标函数,计算了雷达搜索模式的射频截获概率。基于毫米波信道稀疏性结果结合贝叶斯算法获取了毫米波射频通道的最佳估计值,从而计算出射频通道最佳值,利用估计后的信号传输隐身后的射频实现射频传输。实验结果表明,本文方法在毫米波射频传输时间为140 s时,信纳比ρ高达0.83。证明使用该方法开展毫米波射频传输时,毫米波传输质量高,不易发生相位幅值的变形,可实现5G毫米波射频的高质量传输。

关键词：多输入多输出雷达搜索模式 5G毫米波射频算法射频隐身贝叶斯算法

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The 144–140 Ma Mafic Dykes in North China and Northeast China Indicating Regional Extensional Tectonic Setting

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Acta Geologica Sinica(English Edition) 2017年第1期91卷 353-354页

作者： XU Huan LIU Yongqing KUANG Hongwei peng nan College of Earth Science East China University of Technology Nanchang 330013 Jiangxi China Institute of Geological Survey East China University of Technology Nanchang 330013 Jiangxi China Institute of Geology Chinese Academy of Geological Sciences Beijing100037 China

Objective Previous studies indicate that the North China Craton（NCC）had undergone the loss of thickened lithosphere and fundamental change of physical and chemical property of lithospheric mantle（the destruction of NCC）during the Mesozoic.The peak period of the destruction of NCC is estimated to be 130 Ma,accompanied by widespread metamorphic core complex,rift basins,A-type granites and mafic dykes. However, it remains greatly controversial on the tectonic setting of NCC in the pre- 130Ma.

关键词： NCC Ma Mafic Dykes in North China and Northeast China Indicating Regional Extensional Tectonic Setting The 144 SHRIMP

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浓香型白酒窖泥己酸菌的研究进展

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华中农业大学学报 2024年第4期43卷 121-132页

作者：晋湘宜胡咏梅彭楠赵述淼华中农业大学生命科学技术学院/农业微生物资源发掘与利用全国重点实验室武汉430070

浓香型白酒是中国白酒的重要类型之一,己酸乙酯是浓香型白酒特征风味物质,该物质合成所需的前体己酸主要依靠发酵过程中的己酸菌代谢生成。己酸菌的分离、鉴定及代谢功能研究已成为白酒品质提升相关领域的研究热点之一。本文综述了窖泥... 详细信息

浓香型白酒是中国白酒的重要类型之一,己酸乙酯是浓香型白酒特征风味物质,该物质合成所需的前体己酸主要依靠发酵过程中的己酸菌代谢生成。己酸菌的分离、鉴定及代谢功能研究已成为白酒品质提升相关领域的研究热点之一。本文综述了窖泥中己酸菌的分离概况,介绍了浓香型白酒发酵系统中常见的3种己酸菌及己酸的合成途径,探讨了pH及底物组成对己酸产量的影响;此外,介绍了微生物群落中其他微生物对己酸菌的影响,以期通过探讨浓香型白酒发酵体系中微生物驱动己酸形成的机制及其影响因素,为提升浓香型白酒品质提供理论基础。

关键词：浓香型白酒己酸菌己酸合成途径泥窖固态发酵菌株互作

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面向船海水动力应用的势粘流耦合方法研究综述

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船舶力学 2024年第4期28卷 606-625页

作者：叶永林杨军城谢春梅孙鹏楠江苏科技大学船舶与海洋工程学院江苏镇江212003 中国船舶科学研究中心江苏无锡214082 深海技术科学太湖实验室江苏无锡214082 中山大学海洋工程与技术学院广东珠海519082

将势流方法和CFD方法相结合的势粘流耦合方法,在船舶与海洋工程领域的波浪演化、波浪与结构物相互作用等问题中逐渐受到关注。势粘流耦合方法在保证计算精度的同时可以有效降低数值模拟的计算成本,使得实尺度的流固耦合精细模拟成为可... 详细信息

将势流方法和CFD方法相结合的势粘流耦合方法,在船舶与海洋工程领域的波浪演化、波浪与结构物相互作用等问题中逐渐受到关注。势粘流耦合方法在保证计算精度的同时可以有效降低数值模拟的计算成本,使得实尺度的流固耦合精细模拟成为可能。本文对面向船舶与海洋工程水动力应用的势粘流耦合方法的发展和研究现状进行了总结,通过区域分解和方程分解两类耦合方法展开论述,分析其优势与面临的挑战。

关键词：势粘流耦合区域分解方程分解

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Molar-Tooth Structure from the Mesoproterozoic Wumishan Formation in Lingyuan,Yanshan Region,North China,and Geological Implications

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Acta Geologica Sinica(English Edition) 2012年第1期86卷 85-95页

作者： KUANG Hongwei LIU Yongqing peng nan LUO Shunshe LI Jiahua CEN Chao CHEN Mingpei Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Key Laboratory of Exploration Technologies for Oil and Gas Resources Ministry of Education of China School of Geophysics and Oil Resources of Yangtze University JingzhouHubei 434023China China University ofGeosciences Beijing 100083China School of Geosciences of Yangtze University Jingzhou Hubei 434023China

Although its origin has not yet reached a consensus so far, MTS （Molar-Tooth Structure） has been documented for more than 100 years. Current study reports a discovery of MTS from the Mesoproterozoic Wumishan Formation, Lingyuan, Yanshan Region, North China, and the features and geological implications of MTS are further discussed. Here, straitigraphic horizons of MTS＇s occurrences show that it was mainly located within the top part of the Wumishan Formation, i.e., limestone unit. Four kinds of morphology of MTS, i.e., fine fusiform, debris, ribbon, ptigmatic and nodular （irregular）, were recognized and thought to be highly related to the sedimentary environments and facies. Geochemistry of MTS including oxides, trace elements and C, O and Sr isotopes indicates that the horizons of MTS-bearing is of higher Sr/Ba and Ca/Mg ratios, lower positive ~13C and highly negative 3180 values than the adjacent stratigraphic levels of rare MTS. Lithology, morphology and geochemistry of MTS in the Wumishan Formation suggest that MTS occurs mainly in shallow subtidal near the storm wave base, which is typically characterized by warm temperature, oversaturated calcium carbonate seawater and high organic productivity. Furthermore, occasional enrichment of algae bacteria here is more favorable for the calcification of calcium oozes and catalytic for MTS. C isotope composition of the Wumishan Formation and MTS of this study is well correlated with that of the Mesoproterozoic Belt Supergroup, North America and Riphean, Siberia, suggesting that MTS acts as a sedimentary record responding to global changes and is a perfect indicator in Precambrian stratigraphic correlation worldwide.

关键词： Molar-tooth Structure Wumishan Formation Mesoproterozoic Implications Lingyuan Yanshan Region

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