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Distribution of sterane maturity parameters in a lacustrine basin and their control factors:A case study from the Dongying Sag,East China

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Petroleum Science 2011年第3期8卷 290-301页

作者： chen Zhonghong zha Ming Jin Qiang Ren Yongjun College of Geo-Resources and Information China University of Petroleum Qingdao Shandong 266555 China

Fifty samples from the source rocks in Member 3 and Member 4 of the Paleogene Shahejie Formation in the Bohai Bay Basin, East China, were analyzed to investigate the distribution, evolution of the molecular maturity ratios C29ββ/（ββ＋αα） and C2920S/（20S＋20R） and their control factors in the natural geological profile and sequence. The results showed that progressive changes in molecular maturity parameters are associated with major changes in thermal evolution of related biomarkers. Increases in the C29ββ/（ββ＋αα） and C2920S/（20S＋20R） ratios result from the difference in the relative rate between generation and thermal degradation of isomers involved. The samples from a hyper-saline environment below 3.5 km in which evaporitic rocks deposited shows high response of Sr/Ba, Sr/Ca, Fe/ Mn, Pr/n-C17, Ph/n-C18 and gammacerane and low response of Pr/Ph. There presents negative reversal of biomarker maturity C29ββ/（ββ＋αα, C29ββ/（ββ＋αα） and Ts/（Ts＋Ym） in the samples from hypersaline environment, reflecting that the gypsum- halite have negative effect on the isomerization of biomarker and thermal evolution of organic matter. The minerals in evaporites also retard the conventional thermal indicators including vitrinite reflectance （Ro） and pyrolysis peak temperature Tmax at the depth below 3.4 km （i.e. 〉3.4 km）, and these parameters also show the inhibition from overpressure in the range of 2.4-3.4 kin. This result will be helpful in the interpretation and application of molecular maturity parameters for similar saline lacustrine basins.

关键词： C29 24-ethyl cholestane biomarker thermal maturity parameters saline basins Dongying Sag

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Atomic tailoring-induced deficiency in tungsten oxides for high-performance energy-related devices

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Tungsten 2024年第2期6卷 269-277页

作者： Jing-Huang Lin Yao-Tian Yan Jun-Lei Qi chen-Yang zha Institute of Applied Physics and Materials Engineering Zhuhai UM Science and Technology Research InstituteUniversity of MacaoTaipaMacao SAR 999078China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China Jiangmen Laboratory of Carbon Science and Technology Hong Kong University of Science and Technology(Guangzhou)Jiangmen 529199China Key Laboratory of Flexible Electronics School of Flexible Electronics(Future Technologies)Institute of Advanced MaterialsNanjing Tech UniversityNanjing 211816China

Nowadays,tungsten oxides,as a typical transition metal oxide,are widely and intensively investigated owing to their excellent material properties and device *** oxygen defi ciency in tungsten oxides is typically the key to enhance their performances for a variety of critical technological *** a gradual increase of oxygen defi ciency,various non-stoichiometric tungsten oxides can be formed by re-adjustment of the atomic arrangement,which exhibits superior performances than their traditional stoichiometric *** review mainly focuses on the recent advances in oxygen-defi cient tungsten oxides from the point of atomic structures,including the forming mechanism of non-stoichiometric tungsten oxides and the superiority of these oxygen-defi cient tungsten oxides in energy-related ***,the challenge and perspective of oxygen-defi cient tungsten oxides are also discussed.

关键词： Oxygen defi ciency Tungsten oxide Atomic structures Catalyst Storage

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Reassessment of barium radiographic examination in diagnosing gastrointestinal diseases

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World Journal of Gastroenterology 1999年第5期5卷 383-387页

作者： chen Jiu-Ru(zha Bei Central Hospital, 61l9Zhong Hua Xin Road, Shanghai 200070, China) 上海市闸北区中心医院上海 200070

Gastrointestinal radiography (GIR) has been a major and first-choice method for diagnosing gastrointestinal diseases with barium as contrast media since its emergence in 1910, even in diagnosing the mass lesions of the organs outside gastrointestinal tract (e.g., liver, pancreas, etc) indirectly. The fiber endoscopy invented in the late 1960s can directly observe the changes on mucosal surface intraluminally and obtain biopsies as well, thus greatly improving the detection and sensitivity of small, shallow or tiny lesions originated from mucosa.

关键词： gastrointestinal radiography gastrointestinal diseases/radiography barium radiographic examination

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A Research on Investment Casting Technology of Ti Alloys

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Journal of Materials Science & Technology 2000年第1期16卷 76-78页

作者： Huiguan WAN, Xiumei QI, Jing TIAN, Yuyong chen, Weiqiang zha and Jun JIA (National Key Laboratory of Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China) National Key Laboratory of Precision Hot Processing of Metals Harbin Institute of Technology Harbin 150001 China

In this research, the materials and the compositions of the surface slurries were chosen by considering the characteristics of Ti investment casting. The effects of solid-liquid ratios on the properties of the slurry and the effects of baking temperatures on the flexural strength have also been investigated. Flawless shells having smooth inner surface were manufactured with proper technology. Ti and its alloys were melted and poured by water-cooled Cu crucible vacuum induction furnace. The qualities of the investment castings made accordingly were studied and analyzed.

关键词： In Ti A Research on Investment Casting Technology of Ti Alloys

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庄子对老学的创造性转化——以道“吹”和“无用”理念为中心

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南通大学学报（社会科学版） 2019年第1期35卷 20-26页

作者：陈成吒上海财经大学人文学院上海200433

老子在对天文历法规律进行形而上化的基础上,总结发展出了"太一""道"等思想,以及"灵""知""吹""用"等独特观念。他的弟子关尹子等对此多有所继承与发展。庄子对后者的"太一"老学有所认知,这在其及其弟子的作品中获得了呈现,但对老学之"道... 详细信息

老子在对天文历法规律进行形而上化的基础上,总结发展出了"太一""道"等思想,以及"灵""知""吹""用"等独特观念。他的弟子关尹子等对此多有所继承与发展。庄子对后者的"太一"老学有所认知,这在其及其弟子的作品中获得了呈现,但对老学之"道"及世界建构的理解已无原始天文历法痕迹。庄子认为"道"生万物后,万物的状态各不同:自然物不具"灵",运作皆是"吹"。人存机心,于是背道而行。且否定人的"知",形成泛主体理念,将"用"转化为"无用",试图以此解放一切,使万物归复逍遥而世界自平。这些皆极大地改变了老学的基本特质。

关键词：庄子老子老学吹无用

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民营企业参与慈善捐赠的政治激励——兼论第三次分配的机制设计

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经济社会体制比较 2022年第4期 40-52页

作者：黄伟陈钊上海立信会计金融学院国际经贸学院复旦大学中国社会主义市场经济研究中心

慈善捐赠是第三次分配的主要内容,民营企业是慈善捐赠的重要力量。文章基于非公有制经济代表人士“凡进必评”政策这一重要制度创新,构建双重差分模型对民营企业参与慈善捐赠的政治激励效果进行经验评估。研究结果显示,“凡进必评”政... 详细信息

慈善捐赠是第三次分配的主要内容,民营企业是慈善捐赠的重要力量。文章基于非公有制经济代表人士“凡进必评”政策这一重要制度创新,构建双重差分模型对民营企业参与慈善捐赠的政治激励效果进行经验评估。研究结果显示,“凡进必评”政策的实施强化了民营企业参与慈善捐赠的政治激励,工商联会员企业显著增加了慈善捐赠的参与概率和投入金额。同时,民营企业现有的政治关联并未削弱该政策的实施效果,“凡进必评”政策对那些更有能力参与慈善捐赠的民营企业产生更大的效应。进一步研究表明,积极承担社会责任的民营企业家更容易被吸纳进地方政治系统,慈善捐赠投入显著提升了民营企业家获选地方人大代表或政协委员的概率。文章揭示了通过机制设计来推动民营企业参与公益慈善的理论逻辑,为党和政府如何引导市场力量积极参与第三次分配、实现共同富裕提供了实证依据。

关键词：民营企业慈善捐赠第三次分配政治激励工商联

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Experimental exploration of five-qubit quantum error-correcting code with superconducting qubits

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National Science Review 2022年第1期9卷 100-106页

作者： Ming Gong Xiao Yuan Shiyu Wang Yulin Wu Youwei zhao chen zha Shaowei Li Zhen zhang Qi zhao Yunchao Liu Futian Liang Jin Lin Yu Xu Hui Deng Hao Rong He Lu Simon C.Benjamin cheng-Zhi Peng Xiongfeng Ma Yu-Ao chen Xiaobo Zhu Jian-Wei Pan Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of China Shanghai Branch CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of China Shanghai Research Center for Quantum Sciences Center for Quantum Information Institute for Interdisciplinary Information Sciences Tsinghua University Department of Materials University of Oxford

Quantum error correction is an essential ingredient for universal quantum computing.D espite tremendous experimental efforts in the study of quantum error correction,to date,there has been no demonstration in the realis ation of universal quantum error-correcting code,with the subsequent verification of all key features including the identification of an arbitrary physical error,the capability for transversal manipulation of the logical state and state *** address this challenge,we experimentally realise the [5,1,3]code,the so-called smallest perfect code that permits corrections of generic single-qubit *** the experiment,having optimised the encoding circuit,we employ an array of superconducting qubits to realise the [5,1,3] code for several typical logical states including the magic state,an indispensable resource for realising non-Clifford *** encoded states are prepared with an average fidelity of 57.1(3)% while with a high fidelity of 98.6(1)% in the code ***,the arbitrary single-qubit errors introduced manually are identified by measuring the *** further implement logical Pauli operations with a fidelity of 97.2(2)% within the code ***,we realise the decoding circuit and recover the input state with an overall fidelity of 74.5(6)%,in total with 92 *** work demonstrates each key aspect of the [5,1,3] code and verifies the viability of experimental realisation of quantum error-correcting codes with superconducting qubits.

关键词： quantum error-correcting code superconducting qubit five-qubit code error detection logical operation

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论尸子对老子学的吸收转化

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南昌大学学报（人文社会科学版） 2017年第2期48卷 53-56页

作者：陈成吒上海财经大学人文学院上海200433

尸子为魏国人,思想以儒家为主,偏向曾子、子思一脉。他对子夏、吴起的思想颇为重视,也研习了老莱子、墨子、列子、田子等人的学说,且试图博取众长,成一家之言。在此基础上他对老子学进行吸收与转化:接受了太一论、道体混成说,对宇宙论... 详细信息

尸子为魏国人,思想以儒家为主,偏向曾子、子思一脉。他对子夏、吴起的思想颇为重视,也研习了老莱子、墨子、列子、田子等人的学说,且试图博取众长,成一家之言。在此基础上他对老子学进行吸收与转化:接受了太一论、道体混成说,对宇宙论、盖天说作了进一步发展;法道方面,兼取全生保身派和君王南面术派老学,但以后者为落脚点,吸收了君鱼民水、公心慈爱、精简礼乐、不敢为天下先等理念,并予以刑名法势术转化,以期实现无为而治、获得恒名的治国理想。他的这些相关理念对此后的老子学发展也有较大影响。

关键词：尸子老子学道家儒家法家

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Realization of High-Fidelity Controlled-Phase Gates in Extensible Superconducting Qubits Design with a Tunable Coupler

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Chinese Physics Letters 2021年第10期38卷 1-5页

作者： Yangsen Ye Sirui Cao Yulin Wu Xiawei chen Qingling Zhu Shaowei Li Fusheng chen Ming Gong chen zha He-Liang Huang Youwei zhao Shiyu Wang Shaojun Guo Haoran Qian Futian Liang Jin Lin Yu Xu cheng Guo Lihua Sun Na Li Hui Deng Xiaobo Zhu Jian-Wei Pan Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Shanghai Branch CAS Center for Excellence in Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaShanghai 201315China Shanghai Research Center for Quantum Sciences Shanghai 201315China Henan Key Laboratory of Quantum Information and Cryptography Zhengzhou 450000China

High-fidelity two-qubit gates are essential for the realization of large-scale quantum computation and *** coupler design is used to reduce the problem of parasitic coupling and frequency crowding in manyqubit systems and thus thought to be advantageous. Here we design an extensible 5-qubit system in which center transmon qubit can couple to every four near-neighboring qubits via a capacitive tunable coupler and experimentally demonstrate high-fidelity controlled-phase(CZ) gate by manipulating central qubit and one nearneighboring qubit. Speckle purity benchmarking and cross entropy benchmarking are used to assess the purity fidelity and the fidelity of the CZ gate. The average purity fidelity of the CZ gate is 99.69±0.04% and the average fidelity of the CZ gate is 99.65±0.04%, which means that the control error is about 0.04%. Our work is helpful for resolving many challenges in implementation of large-scale quantum systems.

关键词： purity neighboring quantum

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磺化石墨烯对树脂基炭刷载流磨损性能的影响

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新型炭材料 2017年第4期32卷 352-357页

作者：冯鹏洋涂川俊陈查坤韦巩顾志平湖南大学材料科学与工程学院湖南长沙410082 上海摩朋电碳科技有限公司上海200000

以磺化石墨烯共混包覆的天然鳞片石墨粉为导电填料,改性酚醛树脂作为粘结剂,采用分步分散、热轧片、二次造粒等工艺制得新型树脂基炭刷材料。采用Z1E-QC8-110石材切割机测试其载流磨损性能,利用XRD、SEM、EDS、TEM等表征手段对磺化石墨... 详细信息

以磺化石墨烯共混包覆的天然鳞片石墨粉为导电填料,改性酚醛树脂作为粘结剂,采用分步分散、热轧片、二次造粒等工艺制得新型树脂基炭刷材料。采用Z1E-QC8-110石材切割机测试其载流磨损性能,利用XRD、SEM、EDS、TEM等表征手段对磺化石墨烯改性前后的鳞片石墨粉及其炭刷制品的磨损面进行微观结构分析。结果表明,经磺化石墨烯改性的鳞片石墨粉呈现出"搭接桥联"状态,且其制成的炭刷材料的磨痕区域呈现"互联粘附"状态。在同为220 V的加载电压下,含磺化石墨烯的炭刷载流磨损率为2.06×10^(-7)mg·N^(-1)·m^(-1),约是未含磺化石墨烯炭刷的31.3%,其抗磨性明显优于后者。树脂基炭刷/铜的磨损机理主要是电侵蚀磨损、氧化磨损和粘着磨损的交互作用。

关键词：树脂基炭刷磺化石墨烯载流磨损微结构

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