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Investigations of methane adsorption characteristics on marine-continental transitional shales and gas storage capacity models considering pore evolution

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Petroleum Science 2024年第4期21卷 2273-2286页

作者： Chen-Gang Lu Xian-Ming Xiao zhen-Qian Xue Zhang-Xin Chen yin-Tao Dong Yue Feng Gang Li School of Energy Resources China University of Geosciences (Beijing) School of Civil and Environmental Engineering Nanyang Technological University Chemical and Petroleum Engineering University of Calgary Eastern Institute of Technology (tentative) CNOOC Research Institute

Methane adsorption is a critical assessment of the gas storage capacity(GSC) of shales with geological conditions. Although the related research of marine shales has been well-illustrated, the methane adsorption of marine-continental transitional(MCT) shales is still ambiguous. In this study, a method of combining experimental data with analytical models was used to investigate the methane adsorption characteristics and GSC of MCT shales collected from the Qinshui Basin, China. The Ono-Kondo model was used to fit the adsorption data to obtain the adsorption parameters. Subsequently, the geological model of GSC based on pore evolution was constructed using a representative shale sample with a total organic carbon(TOC) content of 1.71%, and the effects of reservoir pressure coefficient and water saturation on GSC were explored. In experimental results, compared to the composition of the MCT shale, the pore structure dominates the methane adsorption, and meanwhile, the maturity mainly governs the pore structure. Besides, maturity in the middle-eastern region of the Qinshui Basin shows a strong positive correlation with burial depth. The two parameters, micropore pore volume and non-micropore surface area, induce a good fit for the adsorption capacity data of the shale. In simulation results, the depth,pressure coefficient, and water saturation of the shale all affect the GSC. It demonstrates a promising shale gas potential of the MCT shale in a deeper block, especially with low water saturation. Specifically,the economic feasibility of shale gas could be a major consideration for the shale with a depth of 60% in the Yushe-Wuxiang area. This study provides a valuable reference for the reservoir evaluation and favorable block search of MCT shale gas.

关键词： High-pressure methane adsorption Marine-continental transitional shale gas Ono-Kondo model Adsorption thermodynamics Gas storage capacity model

Quantum key distribution over a mimicked dynamic-scattering channel

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Science China(Information Sciences) 2024年第4期67卷 323-330页

作者： Qi-Hang LU Fang-Xiang WANG Wei CHEN Hai-Yang FU yin-Jie LU Shuang WANG De-Yong HE zhen-Qiang yin Guang-Can GUO zheng-Fu HAN CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Hefei National Laboratory University of Science and Technology of China

Free-space quantum key distribution(QKD) plays an important role in the global quantum network. However, free space channels suffer from the atmospheric turbulence and scattering effects of haze,fog, and dust, which significantly weaken the performance of QKD or even block the secure quantum ***, we prove the performance of QKD over a dynamic scattering channel can be enhanced significantly using a fast wavefront shaping technique. The system achieves on average 10-dB enhancement of quantum transmission efficiency and establishes a secure quantum link for QKD. Our work demonstrates the feasibility of QKD through free-space dynamic scattering channels and enhances the deployment capability of complex-channel QKD system.

关键词： quantum key distribution free space channel channel turbulence channel scattering wavefront shaping

A novel nano-grade organosilicon polymer:Improving airtightness of compressed air energy storage in hard rock formations

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International Journal of Mining Science and Technology 2024年第3期34卷 305-321页

作者： Zhuyan zheng Guibin Wang Chunhe Yang Hongling Ma Liming yin Youqiang Liao Kai Zhao zhen Zeng Hang Li Yue Han Institute of Rock and Soil Mechanics Chinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Geomechanics and Geotechnical Engineering Wuhan 430071China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China PowerChina Huadong Engineering Corporation Limited Hangzhou 310014China

Enhancing cavern sealing is crucial for improving the efficiency of compressed air energy storage(CAES)in hard rock *** study introduced a novel approach using a nano-grade organosilicon polymer(NOSP)as a sealant,coupled with an air seepage evaluation model that incorporates Knudsen ***,the initial coating application methods were outlined,and the advantages of using NOSP compared to other sealing materials,particularly regarding cost and construction techniques,were also examined and *** results indicated a significant reduction in permeability of rock specimens coated with a 7–10μm thick NOSP ***,under a 0.5 MPa pulse pressure,the permeability decreased to less than 1 n D,and under a 4 MPa pulse pressure,it ranged between4.5×10^(-6)–5.5×10^(-6)m D,marking a 75%–80%decrease in granite *** sealing efficacy of NOSP surpasses concrete and is comparable to rubber *** optimal viscosity for application lies between 95 and 105 KU,and the coating thickness should ideally range from 7 to 10μm,applied to substrates with less than 3%*** study provides new insights into air transport and sealing mechanisms at the pore level,proposing NOSP as a cost-effective and simplified solution for CAES applications.

关键词： Compressed air energy storage Lining Permeability Transient pulse method Hard rock cavern Nano-grade organosilicon polymer coating

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几类特殊的谱任意和惯量任意符号模式矩阵

中北大学学报（自然科学版） 2009年第4期30卷 307-311页

作者：梅银珍王鹏陈淑琴中北大学理学院山西太原030051

利用矩阵理论和组合论的方法对一些特殊类型的符号模式的惯量和谱进行了研究.找到了一类谱任意的零-非零符号模式矩阵,同时也是惯量任意的符号模式矩阵,证明了Hessenberg型矩阵对应的符号模式矩阵是极小惯量任意符号模式矩阵;给出一类... 详细信息

利用矩阵理论和组合论的方法对一些特殊类型的符号模式的惯量和谱进行了研究.找到了一类谱任意的零-非零符号模式矩阵,同时也是惯量任意的符号模式矩阵,证明了Hessenberg型矩阵对应的符号模式矩阵是极小惯量任意符号模式矩阵;给出一类由低阶矩阵通过直和构造而成的几乎完全惯量任意符号模式矩阵;通过对形如"S"的特殊符号模式矩阵的分析,利用矩阵分解的性质得到了谱任意符号模式矩阵的一个必要条件.

关键词：符号模式谱任意惯量任意几乎完全惯量任意极小谱任意符号模式

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一类非幂零极小惯量任意符号模式矩阵

山西大学学报(自然科学版) 2010年第3期33卷 339-342页

作者：梅银珍高玉斌中北大学数学系

如果一个惯量任意符号模式的任意一个或多个非零元被零取代后所得到的符号模式不是惯量任意的,则这个惯量任意符号模式称为极小惯量任意符号模式(MIAP).文献[1]中In-JacKim等给出一类不可约的惯量任意符号模式ψ2k+1(k≥2),并证明了当k=... 详细信息

如果一个惯量任意符号模式的任意一个或多个非零元被零取代后所得到的符号模式不是惯量任意的,则这个惯量任意符号模式称为极小惯量任意符号模式(MIAP).文献[1]中In-JacKim等给出一类不可约的惯量任意符号模式ψ2k+1(k≥2),并证明了当k=2,3时是(MIAP).文章将证明k≥4时ψ2k+1也是(MIAP).

关键词：符号模式惯量任意极小惯量任意

Multiple factors influencing high-purity indium electrolytic refining

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Chinese Journal of Chemical Engineering 2024年第7期71卷 148-160页

作者： Hong-Qiang Fan Fei Li Hong-Xing zheng Wu-ji Pan mei-zhen Wu Yashar Behnamian Ju-Bo Peng Dong-Hai Lin State Key Laboratory of Advanced Special Steel&School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Shanghai Engineering Research Center for Integrated Circuits and Advanced Display Materials Shanghai UniversityShanghai 200444China Research&Development Center Yunnan Tin Group(Holding)Limited CompanyKunming 650032China Department of Chemical and Materials Engineering University of AlbertaEdmonton T6G 2V4AlbertaCanada School of Energy and Materials Shanghai Key Laboratory of Engineering Materials Application and EvaluationShanghai Polytechnic UniversityShanghai 201209China

The effects of various contaminants in the electrolytic refinement of indium were investigated using a glow discharge mass spectrometer(GDMS).The effects of several factors such as the indium ion(In3+)concentration,the sodium chloride(NaCl)concentration,the current density,the gelatin concentration,the pH,and the electrode distance,were *** variations in impurity levels concerning gelatin concentration were *** the gelatin and In3+concentration were moderately positively correlated with the Pb *** Sb concentration was associated positively with the NaCl concentration,while the Ti concentration had an adverse correlation with the NaCl *** Bi element content was positively linked to the electrode *** the current density increased,Cu,Pb,and Bi impurities initially rose and then eventually ***,a critical current density of 45 A·m^(-2) was identified in this behavior.

关键词： High-purity indium Electrolysis Multiple factors Electrochemistry Purification

Citrinsorbicillin A,a novel homotrimeric sorbicillinoid isolated by LC-MS-guided with cytotoxic activity from the fungus Trichoderma citrinoviride HT-9

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Chinese Chemical Letters 2024年第8期35卷 299-303页

作者： Guo-Ping yin Ya-Juan Li Li Zhang Ling-Gao Zeng Xue-mei Liu Chang-Hua Hu Engineering Research Center of Coptis Development and Utilization(Ministry of Education) College of Pharmaceutical Sciences and Chinese MedicineSouthwest UniversityChongqing 400715China State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 211198China NMPA Key Laboratory for Quality Monitoring of Narcotic Drugs and Psychotropic Substances Chongqing Institute for Food and Drug ControlChongqing 401121China

Citrinsorbicillin A(1),a novel homotrimeric sorbicillinoid,along with two new monomers citrinsor-bicillins B(2)and C(3),were isolated from the Coptis chinensis endophyte Trichoderma citrinoviride HT-9 by liquid chromatograph mass spectrometer(LC-MS)-guided strategy.1 was the first trimeric-example from terrestrial fungi,which possessed a unique carbon skeleton with two bicyclo[2.2.2]octanedione ring connected through an enolated carbon forming by[4+2]*** structures were elucidated by spectroscopic analysis and X-ray diffraction.1 exhibited moderate cytotoxicity against human colon cancer HT29 cells,and it induced significant cell cycle arrest by reducing the protein expression of cyclin D1.

关键词： Citrinsorbicillin A Trimeric sorbicillinoid Coptis chinensis endophyte Trichoderma citrinoviride [4+2]Cycloaddition Cytotoxic activity

Variation in Bombyx mori immune response against fungal pathogen Beauveria bassiana with variability in cell wallβ-1,3-glucan

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Insect Science 2024年第1期31卷 211-224页

作者： Yulong Wang zhen Liu Xuebing yin Shihong Liu Kai Wang Rongjie Wan Haoran Chen Xinyang Li Bo Huang Anhui Provincial Key Laboratory of Microbial Pest Control Anhui Agricultural UniversityHefeiChina

Entomopathogenic fungi are protected by a cell wall with dynamic structure for adapting to various environmental conditions.β-1,3-Glucan recognition proteins activate the innate immune system of insects by recognizing surface molecules of ***,the associations between pathogenicity and the different components of entomopathogenic fungal cell walls remain *** Beauveria bassiana strains were selected that have significantly differing virulence against Bombyx *** molecular mechanisms underlying the immune response in *** were investigated using RNA sequencing,which revealed differences in the immune response to different *** strains at 12 h *** assays revealed thatβ-1,3-glucan content had an opposite trend to that of fungal virulence.β-1,3-Glucan injection upregulated BmβGRP4 expression and significantly reduced the virulence of the high-virulence strain but not that of the medium-virulence or low-virulence ***βGRP4 silencing in *** with RNA interference resulted in the opposite virulence pattern,indicating that the virulence of *** was affected by the cell walls’content ofβ-1,3-glucan,which could be recognized by Bmβ***,interference with the gene CnA(calcineurin catalytic A subunit)involved inβ-1,3-glucan synthesis eliminated differences in virulence between *** *** results indicate that strains of a single species of pathogenic fungi that have differing cell wall components are recognized differently by the innate immune system of ***.

关键词： ombyx mori BmβGRP4 innate immunity insect fungal pathogen virulence

Real‑time detection of aging status of methylammonium lead iodide perovskite thin flms by using terahertz time‑domain spectroscopy

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Frontiers of Optoelectronics 2024年第3期17卷 39-50页

作者： Jinzhuo Xu yinghui Wu Shuting Fan Xudong Liu zhen yin Youpeng Yang Renheng Wang zhengfang Qian Yiwen Sun Department of Biomedical Engineering School of MedicineShenzhen UniversityShenzhen 518060China Guangdong Provincial Key Laboratory of Durability for Ocean Civil Engineering College of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China

The inadequate stability of organic–inorganic hybrid perovskites remains a signifcant barrier to their widespread commercial application in optoelectronic *** phenomena profoundly afect the optoelectronic performance of perovskite-based *** addition to enhancing perovskite stability,the real-time detection of aging status,aimed at monitoring the aging progression,holds paramount importance for both fundamental research and the commercialization of organic–inorganic hybrid *** this study,the aging status of perovskite was real-time investigated by using terahertz time-domain *** analysis consistently revealed a gradual decline in the intensity of the absorption peak at 0.968 THz with increasing perovskite ***,a systematic discussion was conducted on the variations in intensity and position of the terahertz absorption peaks as the perovskite *** fndings facilitate the real-time assessment of perovskite aging,providing a promising method to expedite the commercialization of perovskite-based optoelectronic devices.

关键词： Perovskite Terahertz spectroscopy Ageing Real-time detection