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Chinese Journal Of Geochemistry 2014年第1期33卷 103-108页

作者： ZENG Wei liu haiyu ZHANG Min School of Earth Environment and Water Resources Yangtze University Key Laboratory of Exploration Technologies for Oil and Gas Resources Ministry of EducationYangtze University

The Qinjiatun and Qikeshu oilfields are new Mesozoic petroleum exploration targets in Lishu Fault Depression of Songliao Basin, northeastern China. Currently, researches on geochemistry of crude oils from Qinjiatun and Qikeshu oilfields have not been performed and the genesis of oils is still uncertain. Based on bulk analyses, the crude oils in the Qinjiatun and Qikeshu oilfields of Lishu Fault Depression from the Lower Cretaceous can be classified as three types. TypeⅠoils, from Quantou and Denglouku formations of Qikeshu oilfield, are characterized by high C24tetracyclic terpane/C26tricyclic terpanes ratios, low gammacerance/C30hopane ratios, tricyclic terpanes/hopanes ratios, C29Ts/C29norhopane ratios and 17α(H)-diahopane/17α(H)-hopane ratios, indicating a brackish lacustrine facies. TypeⅡoils, from Shahezi Formation of Qikeshu oilfield show low C24tetracyclic terpane/C26tricyclic terpanes, high gammacerance/C30hopane ratios, tricyclic terpanes/hopanes ratios, C29Ts/C29 norhopane and C30diahopane/C30hopane ratios, thus suggesting that they originated from source rocks deposited in a weak reducing brackish lacustrine environment, or clay-rich sediments. Type oilsⅢ, from some wells of Qikeshu oilfield have geochemical characteristics intermediate between those two types and may be mixture of typeⅠand Ⅱoils.

关键词：地球化学特征成因类型梨树断陷松辽盆地东北部油田原油中国

Genesis study of high abundant 17α(H)-diahopanes in Lower Cretaceous lacustrine source rocks of the Lishu Fault Depression, Songliao Basin, Northeast China

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Chinese Journal Of Geochemistry 2014年第2期33卷 201-206页

作者： liu haiyu ZHANG Min LI Xing School of Earth Environment and Water Resources Yangtze University Key Laboratory of Exploration Technologies for Oil and Gas Resources Yangtze University Zhanjiang Branch of CNOOC Ltd.

Relatively abundant 17α(H)-diahopanes have been detected in the lower cretaceous lacustrine source rocks from the Lishu Fault Depression in the Songliao Basin Northeast China. Rich long chain tricyclic terpanes(carbon number up to C35) and gammacerane have been observed in those source rocks with relatively abundant 17α(H)-diahopanes, which is rarely seen in previous reports. In this paper, the formation of 17α(H)-diahopanes has been discussed from three aspects including maturity, oxidation-reduction nature of depositional environment and parent material composition by the GC/MS analyses. The results reveal that maturity and oxidation-reduction nature of depositional environment have little effect on the formation of 17α(H)-diahopanes in the investigated area. However, the positive correlation between long-chain tricyclic terpanes and 17α(H)-diahopanes argues strongly for a common origin, and the origin is related to the algaes in saline water environment. The algaes in saline water environment may be a kind of origin of 17α(H)-diahopanes.

关键词：中国东北地区湖相烃源岩重排藿烷梨树断陷松辽盆地下白垩统 A(H) 成因

Enhanced performance of oxygen vacancies on CO_(2) adsorption and activation over different phases of ZrO_(2)

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Frontiers in Energy 2023年第4期17卷 545-554页

作者： Juntian NIU Cunxin ZHANG haiyu liu Yan JIN Riguang ZHANG College of Electrical and Power Engineering Taiyuan University of TechnologyTaiyuan030024China State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan030024China

The effect of oxygen vacancies on the adsorption and activation of CO_(2) on the surface of different phases of ZrO_(2) is investigated by density functional theory(DFT)*** calculations show that the oxygen vacancies contribute greatly to both the adsorption and activation of CO_(2).The adsorption energy of CO_(2) on the c-ZrO_(2),t-ZrO_(2) and,m-ZrO_(2) surfaces is enhanced to 5,4,and 3 folds with the help of oxygen vacancies,***,the energy barrier of CO_(2) dissociation on the defective surfaces of c-ZrO_(2),t-ZrO_(2),and m-ZrO_(2) is reduced to 1/2,1/4,and 1/5 of the perfect surface with the assistance of oxygen ***,the activation of CO_(2) on the ZrO_(2) surface where oxygen vacancies are present,and changes from an endothermic reaction to an exothermic *** finding demonstrates that the presence of oxygen vacancies promotes the activation of CO_(2) both kinetically and *** results could provide guidance for the high-efficient utilization of CO_(2) at an atomic scale.

关键词： CO_(2)activation oxygen vacancies ZrO_(2) different phases

A density functional theory study of methane activation on MgO supported Ni_(9)M_(1) cluster:role of M on C-H activation

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Frontiers of Chemical Science and Engineering 2022年第10期16卷 1485-1492页

作者： Juntian Niu haiyu liu Yan Jin Baoguo Fan Wenjie Qi Jingyu Ran College of Electrical and Power Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Advanced Manufacturing Technology for Automobile Parts Ministry of EducationChongqing University of TechnologyChongqing 400050China Key Laboratory of Low-grade Energy Utilization Technologies and Systems Ministry of EducationChongqing UniversityChongqing 400044China

Methane activation is a pivotal step in the application of natural gas converting into high-value added chemicals via methane steam/dry reforming *** element was found to be the most widely used *** present work,methane activation on MgO supported Ni–M(M=Fe,Co,Cu,Pd,Pt)cluster was explored through detailed density functional theory calculations,compared to pure Ni ***_(4)adsorption on Cu promoted Ni cluster requires overcoming an energy of 0.07 eV,indicating that it is slightly endothermic and unfavored to occur,while the adsorption energies of other promoters M(M=Fe,Co,Pd and Pt)are all higher than that of pure Ni *** role of M on the first C–H bond cleavage of CH_(4)was *** elements of the same period in Ni cluster,such as Fe,Co and Cu,for C–H bond activation follows the trend of the decrease of metal atom *** a result,Ni–Fe shows the best ability for C–H bond *** addition,doping the elements of the same family,like Pd and Pt,for CH_(4)activation is according to the increase of metal atom ***,C–H bond activation demands a lower energy barrier on Ni–Pt *** illustrate the adsorptive dissociation behaviors of CH_(4)at different Ni–M clusters,the Mulliken atomic charge was *** general,the electron gain of CH_(4)binding at different Ni–M clusters follows the sequence of Ni–Cu(–0.02 e)

关键词： CH_(4) dissociation Ni-M C-H bond activation charge transfer

Impact of Ni particle size on CO_(2)activation and CO formation during reforming process:A density functional theory study

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Frontiers in Energy 2024年第4期18卷 525-534页

作者： Juntian NIU Shengzhuo CHEN Xianrong ZHENG haiyu liu Yan JIN Jingyu RAN College of Electrical and Power Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Low-grade Energy Utilization Technologies and Systems(Ministry of Education) Chongqing UniversityChongqing 400044China

In recent years,the dry reforming of methane(DRM)reaction has gained widespread attention due to its effective utilization of two major greenhouse *** Ni-based catalysts for DRM exhibit a strong dependence on particle size,however,the reaction mechanisms involved remain *** this work,the effect of metal particle size on CO_(2)activation and CO formation was explored in the DRM reaction using the density functional ***/MgO(x=13,25,37)was constructed to investigate the CO_(2)activation and the formation of CO during the DRM *** is found that CO_(2)is more inclined to undergo chemisorption on Nix/MgO before *** the variation in particle size,the main activation pathway of CO_(2)on the catalyst *** the smallest Ni13/MgO,CO_(2)tends to directly dissociate,while on the larger Ni25/MgO and Ni37/MgO,the hydrogenation dissociation of CO_(2)is more kinetically *** to Ni13/MgO and Ni37/MgO,the oxidation of surface C atoms and the oxidation of CH occur more readily on Ni25/*** indicates that C atoms are less likely to form on Ni25 particle and are more easily to be *** some extent,the results suggest that Ni25/MgO exhibits superior resistance to carbon formation.

关键词： particle size Ni/MgO catalyst CO_(2)activation CO formation

Economic policy uncertainty and executive turnover

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China Journal of Accounting Research 2021年第1期14卷 83-99页

作者： Hong Huang haiyu liu Baohua Yang School of Finance and Business Shanghai Normal UniversityChina

This paper examines whether economic uncertainty increases executive *** negative perception perspective and business change theory suggest that executives are more likely to leave their jobs during periods of corporate ***,the additive effects of internal and external risk are thought to prompt firms to carefully consider executive turnover,thereby reducing the likelihood of executive *** on the literature,we propose a checkand-balance hypothesis for the relationship between external uncertainty and executive change,according to which the optimal superposition of the internal and external risks stemming from increased external uncertainty would be to avoid a wave of executive *** a sample of Chinese A-share listed companies from 2010 to 2019 and the China economic policy uncertainty index of Baker et al.(2013),we examine the impact of economic policy uncertainty on executive turnover and our results support the check-and-balance *** findings enhance our understanding of how economic policy uncertainty affects executive turnover,and enrich the literature on corporate risk management and strategic management.

关键词： Economic policy uncertainty Executive turnover Risk taking Director-manager duality

Progress in the Researches on Insect Mitochondrial Genome and Analysis of Gene Order

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Science Foundation in China 2009年第2期17卷 39-45页

作者： Hu Li Jianyu Gao haiyu liu Wanzhi Cai Department of Entomology China Agricultural University Beijing 100193 China

Insect mitochondrial genome is a double-stranded circular genomes which range from 14 503 bp to 19 571 bp in *** all the sequenced insect mitochondrial genomes encode 37 genes:two for rRNAs,13 for proteins and 22 for *** review compares and summarizes the features of complete mitochondrial genomes from 175 sequenced species of insects in 22 *** genomic organization, contents,gene order,and rearrangements of gene order are analyzed.

关键词： insect mitochondrial genome geneorder phylogeny

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钨对氩弧熔覆修复模具涂层组织与性能的影响

特种铸造及有色合金 2016年第1期36卷 9-12页

作者：刘海渔湖南汽车工程职业学院

通过添加不同含量W粉制备高性能涂层,借助光学显微镜、硬度计以及磨粒磨损试验机等手段,对比研究了W含量对氩弧熔覆修复金属模具涂层组织与性能的影响。结果表明,W对涂层显微组织与性能有显著影响。随着W粉添加量的增加,涂层中奥氏体组... 详细信息

通过添加不同含量W粉制备高性能涂层,借助光学显微镜、硬度计以及磨粒磨损试验机等手段,对比研究了W含量对氩弧熔覆修复金属模具涂层组织与性能的影响。结果表明,W对涂层显微组织与性能有显著影响。随着W粉添加量的增加,涂层中奥氏体组织逐渐消失,初生碳化物M_(23)C_6含量增加。涂层硬度(HRC)值从52增加到62,而涂层耐磨性则表现为先增加后减小。其中当W粉添加量为5%时,初生碳化物M_(23)C_6均匀分布在涂层中,耐磨性最佳,其相对耐磨性比基体提高了22.5倍。

关键词：氩弧熔覆显微组织钨含量耐磨性

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日本和泉市久保惣记念美术馆藏秦汉印选释

故宫博物院院刊 2023年第12期 102-109,153页

作者：刘海宇山东大学文化遗产研究院

日本和泉市久保惣记念美术馆藏有一批古玺印,均为园田湖城旧藏。这批材料虽经辗转著录,但因印蜕不清等原因,有些释文存在问题。作者根据调查所得详尽信息,对个别秦汉印进行研究,考释迄今所缺释的文字,并根据新资料对相关文字的释读提出... 详细信息

日本和泉市久保惣记念美术馆藏有一批古玺印,均为园田湖城旧藏。这批材料虽经辗转著录,但因印蜕不清等原因,有些释文存在问题。作者根据调查所得详尽信息,对个别秦汉印进行研究,考释迄今所缺释的文字,并根据新资料对相关文字的释读提出自己的意见。

关键词：秦汉印秦汉文字释读

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日本篆刻家园田湖城及其印学资料收藏

清华大学学报（哲学社会科学版） 2024年第3期39卷 224-230,248页

作者：刘海宇山东大学文化遗产研究院青岛266237

园田湖城(1886—1968)是日本近代著名的篆刻家、印学资料收藏家,他的古玺印和古印谱收藏久负盛名,同时他又精通印谱的制作,曾发行自藏和他人藏古玺印的印谱二十余种、流派印谱十余种。园田湖城的篆刻艺术和印学资料收藏广受关注。今从... 详细信息

园田湖城(1886—1968)是日本近代著名的篆刻家、印学资料收藏家,他的古玺印和古印谱收藏久负盛名,同时他又精通印谱的制作,曾发行自藏和他人藏古玺印的印谱二十余种、流派印谱十余种。园田湖城的篆刻艺术和印学资料收藏广受关注。今从园田湖城其人及其篆刻艺术出发,考察他的印谱收藏和旧藏印谱的递传,评述他的古玺印收藏和所藏古玺印的学术价值。可以说,园田湖城在整个东亚的印学资料收藏史和篆刻史上占有一定的地位,要给予足够的重视和应有的评价。园田湖城受到后世评价的功绩在印学资料的收藏与研究、印谱的制作、古典派篆刻艺术等三个领域,同时他一直致力于提升篆刻家的社会地位、篆刻的普及活动以及对后学的教育活动,为后人所敬仰。

关键词：园田湖城印谱玺印印学篆刻