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Distribution characteristics, exploration and development, geological theories research progress and exploration directions of shale gas in China

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China Geology 2022年第1期5卷 110-135页

作者： Shi-zhen Li Zhi Zhou Hai-kuan Nie Lei-fu Zhang Teng Song wei-bin Liu Hao-han Li Qiu-chen Xu Si-yu wei Shu Tao Oil and Gas Survey China Geological SurveyMinistry of Natural ResourcesBeijing 100083China The Key Laboratory of Unconventional Oil and Gas Geology China Geological SurveyBeijing 100083China Sinopec Petroleum Exploration and Production Research Institute Beijing 100083China PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083China School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China

The shale gas resources in China have great potential and the geological resources of shale gas is over 100×10^(12)m^(3),which includes about 20×10^(12)m^(3) of recoverable ***-rich shales can be divided into three types according to their sedimentary environments,namely marine,marine-continental transitional,and continental shales,which are distributed in 13 stratigraphic systems from the Mesoproterozoic to the *** Sichuan Basin and its surrounding areas have the highest geological resources of shale gas,and the commercial development of shale gas has been achieved in the Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation in these areas,with a shale gas production of up to 20×10^(9)m^(3) in *** has seen rapid shale gas exploration and development over the last five years,successively achieving breakthroughs and important findings in many areas and *** details are as follows.(1)Large-scale development of middle-shallow shale gas(burial depth:less than 3500 m)has been realized,with the productivity having rapidly increased;(2)breakthroughs have been constantly made in the development of deep shale gas(burial depth:3500-4500 m),and the ultradeep shale gas(burial depth:greater than 4500 m)is under testing;(3)breakthroughs have been made in the development of normal-pressure shale gas,and the assessment of the shale gas in complex tectonic areas is being accelerated;(4)shale gas has been frequently discovered in new areas and new strata,exhibiting a great *** on the exploration and development practice,three aspects of consensus have been gradually reached on the research progress in the geological theories of shale gas achieved in China.(1)in terms of deep-water fine-grained sediments,organic-rich shales are the base for the formation of shale gas;(2)in terms of high-quality reservoirs,the development of micro-nano organic matter-hosted pores serves as the core of shale gas accumulation;(3)in terms of pre

关键词： Shale gas Shale gas distribution Formation era Deep-water fine-grained sediments Shale reservoirs Preservation conditions Exploration and development Wufeng-Longmaxi formations Exploration directions Oil-gas exploration engineering China

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Modified Eyring viscosity equation and calculation of activation energy based on the liquid quasi-lattice model

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Science China(Physics,Mechanics & Astronomy) 2010年第10期53卷 1853-1860页

作者： han GuangZe FANG ZengKe CHEN MingDong Department of Physics South China University of TechnologyGuangzhou 510640China Guangzhou Auto College South China University of TechnologyGuangzhou 510800China

Viscosity is an important physical parameter of fluid,and the Eyring viscosity equation is a popular viscosity *** on the Eyring reaction rate equation and Boltzmann statistical theory,and including the probabilities of creating a hole in liquid and the transition to the neighboring hole,a modified Eyring viscosity equation was *** to the structural characteristics of short-range order,liquid is treated as a quasi-lattice structure in a small *** activation energy,which is the minimum energy needed for the molecule to jump to its neighboring hole because of the restriction of other molecules around it,was analytically calculated from an intermolecular Lennard-Jones potential function and a Stockmayer potential *** viscosity values of 37 kinds of typical liquids at 25°C and the dependence of viscosity of three kinds of liquids on temperatures were calculated with this modified viscosity equation,and the calculated results agree with the experimental values to some *** work not only enriches the understanding of the mechanism of liquid viscosity,but also could provide some theoretical guides for the relevant studies and applications.

关键词： Lennard-Jones potential Stockmayer potential transition probability activation energy Eyring viscosity equation

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Catheter ablation of atrial fibrillation in a patient with dextrocardia： what is the challenge？

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Chinese Medical Journal 2010年第17期123卷 2478-2479页

作者： WANG Xin-hua SHI Hai-feng han Bing TAN Hong-wei JIANG wei-feng LIU Xu Department of Cardiology Shanghai Chest Hospital Affiliated to Shanghai Jiao Tong University Shanghai 200030 China

Catheter ablation has been an established strategy for treating paroxysmal atrial fibrillation （AF）.Pulmonaryvein isolation is the predominant approach of catheter ablation. This procedure is characterized as transseptal catheterization and point-by-point ablation around the ipsilateral pulmonary veins （PVs）. Although catheter ablation can be safely performed in a heart with normal structures, it may be challenging to be performed in a dextrocardia.

关键词： atrial fibrillation catheter ablation structures strategy approach heart PVs

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Maternally inherited H4K16 acetylation primes zygotic gene activation in Drosophila

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Science China(Life Sciences) 2020年第12期63卷 1950-1952页

作者： Lei Qiu Xueqin Liu Junhong han Research Laboratory of Tumor Epigenetics and Genomics Department of General SurgeryFrontiers Science Center for Disease-related Molecular NetworkState Key Laboratory of Biotherapy and Cancer Centerand National Clinical Research Center for GeriatricsWest China HospitalSichuan UniversityChengdu 610041China Department of Clinical Research Management West China HospitalSichuan UniversityChengdu 610041China

In a recent study published in Cell, Samata et al. demonstrated a novel mechanism that guided the genomic reprogramming. They showed that the acetylation of histone H4 at Lysine 16(H4K16ac) was intergenerationally maintained from the mother’s oocyte to the young embryo and primed zygotic gene activation in Drosophila(Samata et al., 2020).Embryonic development is initially directed by maternal gene products. Then gradually, developmental control is handed to the zygotic genome during the maternal-to-zygotic transition(MZT).

关键词： activation maintained initially

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Neural network based method for background modeling and detecting moving objects

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The Journal of China Universities of Posts and Telecommunications 2015年第3期22卷 100-109页

作者： Bi Song han Cunwu Sun Dehui Beijing Key Laboratory of Fieldbus Technology and Automation North China University of Technology

This paper proposes a novel method, primarily based on the fuzzy adaptive resonance theory （ART） neural network with forgetting procedure, for moving object detection and background modeling in natural scenes. With the ability, inheriting from the ART neural network, of extracting patterns from arbitrary sequences, the background model based on the proposed method can learn new scenes quickly and accurately. To guarantee that a long-life model can derived from the proposed mothed, a forgetting procedure is employed to find the neuron that needs to be discarded and reconstructed, and the finding procedure is based on a neural network which can find the extreme value quickly. The results of a suite of quantitative and qualitative experiments conducted verify that for processes of modeling background and detecting moving objects our method is more effective than five other proven methods with which it is compared.

关键词： background modeling forgetting procedure fuzzy adaptive resonance theory moving object detection

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The influence of irregular seafloor topography on the seismic wave field and migration imaging

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Acta Oceanologica Sinica 2019年第3期38卷 151-158页

作者： Fuxing han Kun Wang Jianguo Sun College for Geoexploration Science Technology Jilin University Jilin Communications Polytechnic

One of the problems experienced in marine geophysical exploration is that the layered features in the migration imaging profile are blurred and the seismic energy reflected is weaker in the middle or lower parts. In this study we model the seismic wavefield records in the undulating seafloor when there is both a slight change and significant change in seafloor topography to analyze its influence on the seismic reflection data and migration imaging profiles. We compare and analyze the wave field records collected at the same point on the original and modified velocity models, and the cross-bonding resulting migration imaging profiles. The results show that whether the seismic reflection data collection is performed along the direction of the survey line or against the direction of the survey line, slight changes in the seafloor topography have little effect on the wave field records and the migration profile, while significant changes in the seafloor topography have great effect on both the wave field records and migration profile.

关键词： seafloor topography seismic wave field seismic reflections migration imaging

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Expression profile of microRNAs in gastrointestinal stromal tumors revealed by high throughput quantitative RT-PCR microarray

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World Journal of Gastroenterology 2015年第19期21卷 5843-5855页

作者： han-Xing Tong Yu-Hong Zhou Ying-Yong Hou Yong Zhang Yuan Huang Bin Xie Jiong-Yuan Wang Quan Jiang Jun-Yi He Ye-Bo Shao Wu-Mei han Ruo-Ying Tan Jun Zhu wei-Qi Lu Department of General Surgery Zhongshan Hospital Fudan University Department of Oncology Zhongshan HospitalFudan University Department of Pathology Zhongshan HospitalFudan University The Center of Endoscopy Zhongshan HospitalFudan University Department of Surgery The Central Hospital of Zaozhuang Mining Group Biovue Technology Ltd

AIM: To investigate the microRNA(miRNA) expression profile in gastrointestinal stromal tumor(GIST) tissues that could serve as a novel diagnostic biomarker for GIST ***: We performed a quantitative real-time quantitative reverse transcriptase polymerase chain reaction assay to analyze the expression of 1888 miRNAs in a sample set that included 54 GIST tissue ***: We found that dysregulation of several miRNAs may be related to the malignant potential of GISTs. Six of these miRNAs, hsa-let-7c, miR-218,miR-488#, miR-4683, miR-34c-5p and miR-4773, were selected as the final list of biomarkers to separate the malignant GISTs(M group) from the benign GISTs(B group). In addition, MiR-29b-2#, hsa-let-7c, miR-891 b, miR-218, miR-204, miR-204-3p, miR-628-5p,miR-744, miR-29c#, miR-625 and miR-196 a were used to distinguish between the borderline(BO group) and M groups. There were 11 common miRNAs selected to separate the benign and borderline(BB) group from the M group, including hsa-let-7c, miR-218, miR-628-5p,miR-204-3p, miR-204, miR-891 b, miR-488#, miR-145,miR-891 a, miR-34c-5p and miR-196 ***: The identified miRNAs appear tobe novel biomarkers to distinguish malignant from benign GISTs, which may be helpful to understand the mechanisms of GIST oncogenesis and progression,and to further elucidate the characteristics of GIST subtypes.

关键词： Gastrointestinal stromal tumors microRNAs Microarray analysis Real-time polymerase chainreaction Diagnosis

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电子市场动态原料配置方法

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计算机工程与应用 2008年第6期44卷 199-201,227页

作者：韩伟南京财经大学信息工程学院南京210046

基于市场交互机制建立电子市场原料配置问题的多智能体协商模型,利用原料电子市场的价格交易数据,基于神经网络的方法在每个协商步预测下一协商步的原料价格,使企业智能体表现出一定的预动性,仿真实验表明该模型提高了市场在配置资源方... 详细信息

基于市场交互机制建立电子市场原料配置问题的多智能体协商模型,利用原料电子市场的价格交易数据,基于神经网络的方法在每个协商步预测下一协商步的原料价格,使企业智能体表现出一定的预动性,仿真实验表明该模型提高了市场在配置资源方面的有效性。

关键词：多智能体系统协商市场机制

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今天的铜器断代研究本质上是考古学研究——兼论新材料能否挑战“康宫说”

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中国史研究动态 2022年第3期 49-53页

作者：韩巍北京大学中国古代史研究中心北京100871

自郭沫若于1932年出版《两周金文辞大系》至今,已经过去了90年,但郭氏当年提出的“标准器断代法”和“系联法”,仍是西周铜器断代研究的基本方法。这一套方法是以所谓“标准器”为出发点和“联络站”,以铭文中包含的人名、地名、事迹等... 详细信息

自郭沫若于1932年出版《两周金文辞大系》至今,已经过去了90年,但郭氏当年提出的“标准器断代法”和“系联法”,仍是西周铜器断代研究的基本方法。这一套方法是以所谓“标准器”为出发点和“联络站”,以铭文中包含的人名、地名、事迹等作为线索,辗转系联,找出互相关联的一组铜器;若干个“器组”又可通过一些关键线索联结到一起,形成规模更大的“器群”;最终还是要回到“标准器”,由“标准器”的年代来确定整个“器群”的年代范围(王世)。

关键词：考古学研究铜器断代康宫王世标准器两周金文辞大系系联法郭沫若

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Titania-supported iridium catalysts for dehydrogenative synthesis of benzimidazoles

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Chinese Chemical Letters 2020年第3期31卷 605-608页

作者： Kenji Wada han Yu Qi Feng Department of Chemistry for Medicine Kagawa UniversityMiki-ChoKita-GunKagawa 761-0793Japan Department of Advanced Materials Science Kagawa UniversityTakamatsuKagawa 761-0396Japan

In this review,development of supported catalysts for the dehydrogenative synthesis of benzimidazoles from primary alcohols and 1,2-phenyIenediamine derivatives is briefly *** them,titania-supported iridium catalysts showed excellent activities under mild reaction ***,the low-temperature activity of iridium catalyst was significantly affected by titania supports,and the reaction of 1,2-phenylenediamine and benzyl alcohol in the presence of rutilesupported catalysts proceeded smoothly at 100℃to give 2-phenylbenzimidazole in high yields of up to 88%,On the other hand,catalysts supported on anatase generally showed poor activity at 100℃.A significant relationship between CO uptake and the activity of titania-supported catalysts has been reported,indicating that well-reduced iridium species on rutile would be responsible for the predominant catalytic *** present results suggest the importance of the selection of suitable titania supports for the iridium catalysts.

关键词： Benzimidazole Iridium Titania Heterogeneous catalysts Dehydrogenation

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