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Reservoir heterogeneity controls of CO_(2)-EOR and storage potentials in residual oil zones:Insights from numerical simulations

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Petroleum Science 2023年第5期20卷 2879-2891页

作者： Yan-Yong Wang Xiao-Guang Wang Ren-Cheng Dong Wen-Chao Teng Shi-Yuan Zhan Guang-Yong Zeng cun-qi jia College of Energy Chengdu University of TechnologyChengdu610059SichuanChina State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanChina Engineering Research Center of Geothermal Resources Development Technology and Equipment Ministry of EducationJilin UniversityChangchun130026JilinChina The University of Texas at Austin AustinTX78712USA Department of Energy Resources Engineering Stanford UniversityStanfordCA94305USA State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu610059SichuanChina

Residual oil zones(ROZs)have large potential for CO_(2)enhanced oil recovery(EOR)and geologic *** CO_(2)injection,the migration of CO_(2)in ROZs controls the performance of both EOR and ***,it has not been clearly visualized and understood that how geological heterogeneity factors control the transport of CO_(2)in *** this study,the oil recovery performance and geologic storage potential during continuous CO_(2)injection in a representative ROZ are studied based on geostatistical modelling and high-fidelity three-phase flow *** examined the influence of autocorrelation length of permeability,global heterogeneity(DykstraeParsons coefficient),and permeability anisotropy on cumulative oil recovery and CO_(2)retention *** results indicate that,as the permeability autocorrelation length increases,the cumulative oil recovery and CO_(2)storage efficiency *** results from the accelerated migration of CO_(2)along high permeability zones(i.e.,gas channeling).The increase in global heterogeneity and permeability anisotropies can lead to low oil recovery and poor CO_(2)sequestration performance,depending on the degree of CO_(2)*** net utilization ratio of CO_(2)(CO_(2)retained/oil produced)unfavorably increases with both autocorrelation length and Dykstra eParsons coefficient,but decreases with the increase in kv/*** a decrease is attributed to enlarged swept volume induced by gravity *** study provides important implications for fieldscale CO_(2)EOR and storage applications in ROZs.

关键词： Residual oil zones CO_(2)injection Enhanced oil recovery Geologic sequestration

Stromal vascular fraction: Mechanisms and application in reproductive disorders

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World Journal of Stem Cells 2025年第1期17卷 71-79页

作者： Zhi-Han Liu qi-qi Xie jia-Lyu Huang Department of Clinical Medicine School of Queen MaryNanchang UniversityNanchang 330000Jiangxi ProvinceChina Center for Reproductive Medicine Jiangxi Key Laboratory of Reproductive HealthJiangxi Maternal and Child Health HospitalJiangxi Branch of National Clinical Research Center for Obstetrics and GynecologyNanchang Medical CollegeNanchang 330000Jiangxi ProvinceChina Center for Reproductive Medicine Jiangxi Maternal and Child Health HospitalJiangxi Branch of National Clinical Research Center for Obstetrics and GynecologyNanchang Medical CollegeNanchang 330008Jiangxi ProvinceChina

Stromal vascular fraction(SVF)is a complex mixture derived from adipose tissue,consisting of a variety of *** to its potential for tissue repair,immunomod-ulation,and support of angiogenesis,SVF represents a promising frontier in regenerative medicine and offers potential therapy for a range of disease *** this article,we delve into the mechanisms through which SVF exerts its effects and explore its potential applications in treating both male and female reproductive disorders,including erectile dysfunction,testicular injury,stress urinary incontinence and intrauterine adhesion.

关键词： Stromal vascular fraction Angiogenesis Inflammation Regenerative medicine Reproductive disorders

Advancements and challenges in esophageal carcinoma prognostic models:A comprehensive review and future directions

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World Journal of Gastrointestinal Oncology 2025年第2期17卷 311-314页

作者： jia Chen qi-Chang Xing Department of Clinical Pharmacy Xiangtan Central HospitalXiangtan 411100Hunan ProvinceChina The Affiliated Hospital Hunan UniversityChangsha 410082Hunan ProvinceChina

In this article,we comment on the article published by Yu et *** employing LASSO regression and Cox proportional hazard models,the article identified nine significant variables affecting survival,including body mass index,Karnofsky performance status,and tumor-node-metastasis *** firmly concur with Yu et al regarding the vital significance of clinical prediction models(CPMs),including logistic regression and Cox regression for assessment in esophageal carcinoma(EC).However,the nomogram's limitations and the complexities of integrating genetic factors pose *** integration of immunological data with advanced statistics offers new research ***-throughput sequencing and big data,facilitated by machine learning,have revolutionized cancer research but require substantial computational *** future of CPMs in EC depends on leveraging these technologies to improve predictive accuracy and clinical application,addressing the need for larger datasets,patientreported outcomes,and regular updates for clinical relevance.

关键词： Predictive model Machine learning Esophageal carcinoma Survival rate Factors

Facilitation of microbialite development by continental weathering in the Cambrian Zhangxia Formation,southern North China Block

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Journal of Palaeogeography 2025年第1期14卷 172-185页

作者： Wen-Tao Yang jia-qi Zhu Min Wang Chao Liu Yong-An qi School of Resources and Environment Henan Polytechnic University Key Laboratory of Biogenic Traces and Sedimentary Minerals of Henan Province Henan Polytechnic University State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of Sciences

We report geochemical data for carbonate rocks from the Cambrian Zhangxia Formation,southern North China Block,including trace-element contents and C,O,and Sr isotopic compositions,to determine the controls on the development of microbialites in this *** sedimentary environment of the Zhangxia Formation evolved from carbonate-slope through platform-margin-reef to ooid-shoal,and then to open-platform settings,corresponding to the development of micrites,microbialites,and oolitic *** data show that δ13C values decrease upwards through the Zhangxia Formation,from 0.99‰to-1.59‰,whereas δ18O values increase from-9.91‰to-7.10‰.Total rare earth element （REE）contents decrease upwards through the stratigraphy,and the contents of Th and Sc show a similar trend.87Sr/86Sr ratios reach a maximum of 0.710544 in the horizons of microbialite development,Member 2 of the Zhangxia Formation,above which the ratios are uniform,with a mean value of *** these geochemical data with the inferred sedimentary evolution,the Zhangxia Formation is interpreted to have formed in a depositional environment that changed from transgression to *** weathering played a crucial role in promoting the input of terrigenous materials,which in turn favored the development of microbialites during the early stage of deposition of the Zhangxia Formation.

关键词： Carbonate rocks Trace elements C and Sr isotopes Microbialites Cambrian

Flotation separation of chalcopyrite from pyrite using mineral fulvic acid as selective depressant under weakly alkaline conditions

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中国有色金属学报 2025年第1期35卷 313-325页

作者： Zhi-hao SHEN Shu-ming WEN jia-mei HAO qi-cheng FENG State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Faculty of Land Resource EngineeringKunming University of Science and TechnologyKunming 650093China

Mineral fulvic acid(MFA)was used as an eco-friendly pyrite depressant to recover chalcopyrite by flotation with the use of the butyl xanthate as a *** experiments showed that MFA produced a stronger inhibition effect on pyrite than on *** separation of chalcopyrite from pyrite was realized by introducing 150 mg/L MFA at a pulp pH of approximately *** copper grade,copper recovery,and separation efficiency were 28.03%,84.79%,and 71.66%,*** adsorption tests,zeta potential determinations,and localized electrochemical impedance spectroscopy tests showed that more MFA adsorbed on pyrite than on chalcopyrite,which weakened the subsequent interactions between pyrite and the *** force microscope imaging further confirmed the adsorption of MFA on pyrite,and X-ray photoelectron spectroscopy results indicated that hydrophilic Fe-based species on the pyrite surfaces increased after exposure of pyrite to MFA,thereby decreasing the floatability of pyrite.

关键词： mineral fulvic acid chalcopyrite pyrite flotation separation

16.48% Efficient solution-processed CIGS solar cells with crystal growth and defects engineering enabled by Ag doping strategy

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Journal of Energy Chemistry 2025年第1期100卷 59-65页

作者： Mengyu Xu Shaocong Yan Ting Liang jia jia Shengjie Yuan Dongxing Kou Zhengji Zhou Wenhui Zhou Yafang qi Yuena Meng Litao Han Sixin Wu Key Laboratory for Special Functional Materials of MOE National&Local Joint Engineering Research Centre for High-efficiency Display and Lighting TechnologySchool of Nanoscience and Materials EngineeringHenan UniversityKaifeng 475004HenanChina

Solution-processed Cu(In,Ga)Se_(2)(CIGS) solar cells suffer from serious carrier recombination and power conversion efficiency(PCE) loss because of the poor film properties and easy formation of ***, we propose Ag&Se co-selenization strategy to enhance the crystallization and passivate harmful defects of the CIGS films. The formation of Ag-Se phase during the selenization process enables the formation of large grains and suppresses the deep level defects. It is found that Ag doping can enlarge the depletion region width, lower the Urbach energy and prolong the carrier lifetime. As a result, a champion solution-processed CIGS solar cell presents a high efficiency of 16.48% with the highly improved opencircuit voltage(VOC) of 662 m V and fill factor(FF) of 75.8%. This work provides an efficient strategy to prepare high quality solution-processed CIGS films for high-performance CIGS solar cells.

关键词： CIGS solarcells Solution-processedmethod Ag doping Crystal growth Defects engineering

Changes in source contributions to the oxidative potential of PM_(2.5)in urban Xiamen,China

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Journal of Environmental Sciences 2025年第3期149卷 342-357页

作者： jia-Min Li Si-Min Zhao qi-Yu Miao Shui-Ping Wu Jie Zhang James J.Schwab Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies Xiamen UniversityXiamen 361102China Center for Marine Environmental Chemistry and Toxicology College of Environment and EcologyXiamen UniversityXiamen 361102China Atmospheric Sciences Research Center University at AlbanySUNYAlbany 12226USA

The toxicity of PM_(2.5)does not necessarily change synchronously with its mass *** this study,the chemical composition(carbonaceous species,water-soluble ions,and metals)and oxidative potential(dithiothreitol assay,DTT)of PM_(2.5)were investigated in 2017/2018 and 2022 in Xiamen,*** decrease rate of volume-normalized DTT(DTTv)(38%)was lower than that of PM_(2.5)(55%)between the two sampling ***,the mass-normalized DTT(DTTm)increased by 44%.Clear seasonal patterns with higher levels in winter were found for PM_(2.5),most chemical constituents and DTTv but not for *** large decrease in DTT activity(84%−92%)after the addition of EDTA suggested that watersoluble metals were the main contributors to DTT in *** increased gap between the reconstructed and measured DTTv and the stronger correlations between the reconstructed/measured DTT ratio and carbonaceous species in 2022were *** decrease rates of the hazard index(32.5%)and lifetime cancer risk(9.1%)differed from those of PM_(2.5)and DTTv due to their different main *** PMF-MLR model showed that the contributions(nmol/(min·m^(3)))of vehicle emission,coal+biomass burning,ship emission and secondary aerosol to DTTv in 2022 decreased by 63.0%,65.2%,66.5%,and 22.2%,respectively,compared to those in 2017/2018,which was consistent with the emission reduction of vehicle exhaust and coal consumption,the adoption of low-sulfur fuel oil used on board ships and the reduced production of ***,the contributions of dust+sea salt and industrial emission increased.

关键词： Chemical composition Oxidative potential Interannual change PMF-MLR Source apportionment

Lightweight multifunctional metamaterial with low-frequency vibroacoustic reduction and load-bearing performances

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Applied Mathematics and Mechanics(English Edition) 2025年第3期46卷 403-422页

作者： qi jia Dianlong YU Donghai HAN Jihong WEN National Key Laboratory of Equipment State Sensing and Smart Support College of Intelligence Science and Technology National University of Defense Technology

Metamaterials can control and manipulate acoustic/elastic waves on a subwavelength scale using cavities or additional components. However, the large cavity and weak stiffness components of traditional metamaterials may cause a conflict between vibroacoustic reduction and load-bearing capacity, and thus limit their ***, we propose a lightweight multifunctional metamaterial that can simultaneously achieve low-frequency sound insulation, broadband vibration reduction, and excellent load-bearing performance, named as vibroacoustic isolation and bearing metamaterial(VIBM). The advent of additive manufacturing technology provides a convenient and reliable method for the fabrication of VIBM samples. The results show that the compressive strength of the VIBM is as high as 9.71 MPa, which is nearly 87.81% higher than that of the conventional grid structure(CGS) under the same volume fraction. Moreover, the vibration and sound transmission are significantly reduced over a low and wide frequency range, which agrees well with the experimental data, and the reduction degree is obviously larger than that obtained by the CGS. The design strategy can effectively realize the key components of metamaterials and improve their application scenarios.

关键词： Compressive strength

Bistable switch molecule DPACdCl_(4) showing four physical channels and high phase transition temperature

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Chinese Chemical Letters 2025年第1期36卷 591-596页

作者： Ying-Yu Zhang jia-qi Luo Yan Han Wan-Ying Zhang Yi Zhang Hai-Feng Lu Da-Wei Fu Institute for Science and Applications of Molecular Ferroelectrics Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsZhejiang Normal UniversityJinhua 321004China Ordered Matter Science Research Center Jiangsu Key Laboratory for Science and applications of Molecular FerroelectricsSoutheast UniversityNanjing 211189China

Multiple switchable physical channels within one material or device,encompassing optical,electrical,thermal,and mechanical pathways,can enable multifunctionality in mechanical-thermal-opto-electronic *** integrated encryption and enhanced performance in storage and sensing presents a formidable challenge in the synthesis and functionality of new *** an effort to overcome the complexities associated with these multiple physical functions,this study investigates the large-size crystal of DPACdCl_(4)(DPA=diisopropylammonium),revealing significant features in rare multi-channel *** compound demonstrates the ability to switch between"OFF/0"and"ON/1"states in the mechanical-thermal-opto-electronic ***,DPACd Cl_(4)possesses four switchable physical channels,characterized by a higher phase transition temperature of 440.7 K and a competitive piezo-electric coefficient of 46 pC/***,solid-state NMR analysis indicates that thermally activated molecular vibrations significantly contribute to its multifunctional switching capabilities.

关键词： Organic-inorganic hybrid Phase transition Crystal Perovskite Piezoelectricity