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Effects of acid-rock reaction on physical properties during CO_(2)-rich industrial waste gas(CO_(2)-rich IWG)injection in shale reservoirs

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Petroleum Science 2024年第1期21卷 272-285页

作者： Yi-Fan Wang Jing Wang Hui-Qing Liu Xiao-cong lv Ze-Min Ji National Key Laboratory of Petroleum Resources and Engineering China University of PetroleumBeijing102249China MOE Key Laboratory of Petroleum Engineering China University of PetroleumBeijing102249China Research Institute of Exploration and Development PetroChinaBeijing100083China

"Carbon peaking and carbon neutrality"is an essential national strategy,and the geological storage and utilization of CO_(2)is a hot issue ***,due to the scarcity of pure CO_(2)gas sources in China and the high cost of CO_(2)capture,CO_(2)-rich industrial waste gas(CO_(2)-rich IWG)is gradually emerging into the public's ***_(2)has good adsorption properties on shale surfaces,but acidic gases can react with shale,so the mechanism of the CO_(2)-rich IWG-water-shale reaction and the change in reservoir properties will determine the stability of geological ***,based on the mineral composition of the Longmaxi Formation shale,this study constructs a thermodynamic equilibrium model of water-rock reactions and simulates the regularity of reactions between CO_(2)-rich IWG and shale *** results indicate that CO_(2)consumed 12%after reaction,and impurity gases in the CO_(2)-rich IWG can be dissolved entirely,thus demonstrating the feasibility of treating IWG through water-rock *** IWG inhibits the dissolution of CO_(2),the optimal composition of CO_(2)-rich IWG is 95%CO_(2)and 5%IWG when CO_(2)geological storage is the main *** contrast,when the main goal is the geological storage of total CO_(2)-rich IWG or impurity gas,the optimal CO_(2)-rich IWG composition is 50%CO_(2)and 50%*** the CO_(2)-rich IWG-water-shale reaction,temperature has less influence on the water-rock reaction,while pressure is the most important ***2 has the greatest impact on water-rock reaction in *** minerals,clay minerals such as illite and montmorillonite had a significant effect on water-rock *** overall reaction is dominated by precipitation and the volume of the rock skeleton has increased by 0.74 cm3,resulting in a decrease in shale porosity,which enhances the stability of CO_(2)geological storage to some *** the reaction between CO_(2)-rich IWG-water-shale at simulated temperatures and pressures,precipitation

关键词： CO_(2)-rich industrial waste gas Geological storage Acid-rock reaction Shale Geochemical modelling

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A neural m^(6)A pathway regulates behavioral aggregation in migratory locusts

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Science China(Life Sciences) 2024年第6期67卷 1242-1254页

作者： Xianliang Huang Qing Li Yanan Xu Ang Li Shanzheng Wang Yusheng Chen Chunrui Zhang Xia Zhang Hailin Wang cong lv Baofa Sun Shaoqin Li Le Kang Bing Chen School of Life Science Institutes of Life Science and Green DevelopmentHebei UniversityBaoding 071002China College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China Institute of Health Sciences Anhui UniversityHefei 230601China Beijing Institute of Genomics Chinese Academy of SciencesBeijing 100101China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100101China

RNA N6-methyladenosine(m^(6)A),as the most abundant modification of messenger RNA,can modulate insect behaviors,but its specific roles in aggregation behaviors remain ***,we conducted a comprehensive molecular and physiological characterization of the individual components of the methyltransferase and demethylase in the migratory locust Locusta *** results demonstrated that METTL3,METTL14 and ALKBH5 were dominantly expressed in the brain and exhibited remarkable responses to crowding or *** individual knockdown of methyltransferases(i.e.,METTL3 and METTL14)promoted locust movement and conspecific attraction,whereas ALKBH5 knockdown induced a behavioral shift toward the solitary ***,global transcriptome profiles revealed that m^(6)A modification could regulate the orchestration of gene expression to fine tune the behavioral aggregation of *** summary,our in vivo characterization of the m^(6)A functions in migratory locusts clearly demonstrated the crucial roles of the m^(6)A pathway in effectively modulating aggregation behaviors.

关键词： RNA methylation N^(6)-methyladenosine transcriptional orchestration aggregation behavior Locusta migratoria

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双轴加载下变轴力大尺寸钢筋混凝土柱抗震性能试验研究

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建筑结构学报 2024年第5期45卷 155-163页

作者：郭玉荣梁康殷吕聪湖南大学土木工程学院湖南长沙410082 湖南大学建筑安全与节能教育部重点实验室湖南长沙410082

为研究双轴加载与轴力变化对大尺寸钢筋混凝土(RC)柱抗震性能的影响,开展了4根截面尺寸600 mm×600 mm、高度3.6 m的钢筋混凝土柱拟静力试验。水平加载包括沿柱截面主轴方向的单轴加载和沿截面对角线方向的模拟双轴加载,变轴力的竖向加... 详细信息

为研究双轴加载与轴力变化对大尺寸钢筋混凝土(RC)柱抗震性能的影响,开展了4根截面尺寸600 mm×600 mm、高度3.6 m的钢筋混凝土柱拟静力试验。水平加载包括沿柱截面主轴方向的单轴加载和沿截面对角线方向的模拟双轴加载,变轴力的竖向加载频率为水平位移加载频率的3倍。针对承载力、位移延性、刚度退化及耗能能力等指标进行了大尺寸RC柱抗震性能分析。结果表明:与水平单轴加载相比,水平双轴加载会增强柱的耗能能力,但是柱刚度退化加快,延性降低;变轴力加载柱和定轴力加载柱的最终破坏形式相同,但是轴力变化对柱的破坏程度有显著影响,高轴压比会抑制柱身裂缝的发展;与定轴力柱相比,变轴力作用下柱顶水平荷载-位移滞回曲线不对称,水平加载对应轴力大的一侧,峰值荷载有所提高,耗能能力增强,但延性下降,刚度退化更快;同时承受双轴加载和变轴力的柱,滞回曲线的“捏拢”现象会更加明显。

关键词：钢筋混凝土柱拟静力试验双轴加载变轴力抗震性能

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茅埏岛红树林沉积物有机碳埋藏特征解析

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中国环境科学 2024年第8期44卷 4539-4546页

作者：于洋水柏年吕聪聪李滨李雪丽魏珍胡成业浙江海洋大学水产学院浙江舟山316022

以茅埏岛北部红树林湿地为研究区域,旨在探究红树林湿地沉积物有机碳埋藏特征和来源.基于放射性同位素(^(210)Pb)采用恒定沉积速率模式分析沉积速率(SAR)、有机碳密度、埋藏速率(OCAR)、有机碳潜在来源及贡献率.茅埏岛红树林湿地的沉积... 详细信息

以茅埏岛北部红树林湿地为研究区域,旨在探究红树林湿地沉积物有机碳埋藏特征和来源.基于放射性同位素(^(210)Pb)采用恒定沉积速率模式分析沉积速率(SAR)、有机碳密度、埋藏速率(OCAR)、有机碳潜在来源及贡献率.茅埏岛红树林湿地的沉积速率约为1.8cm/a.沉积物以粉砂和黏土为主,粒径随深度变化基本保持稳定,且过剩^(210)Pb活度与深度之间具有较好的相关性,表明沉积环境较为稳定.沉积物有机碳密度平均值为0.66g/cm^(3),埋藏速率为120.01g/(m^(2)·a).通过碳氮稳定同位素分布特征结合多线性混合模型(IsoSource)可知,沉积物有机碳来源总体以海陆混合来源为主,其中海源占比50.3%,陆源占比33.4%,树源贡献占比16.3%;表层沉积物以陆源和树源输入为主,树源贡献率最高达46.4%.红树林植被组成、成林时间等是影响沉积物有机碳埋藏重要因素.

关键词：红树林湿地有机碳沉积物埋藏速率

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Fabrication of Electrospun PVDF Nanofibers with Higher Content of Polar β Phase and Smaller Diameter by Adding a Small Amount of Dioctadecyl Dimethyl Ammonium Chloride

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Chinese Journal of Polymer Science 2017年第8期35卷 992-1000页

作者： wei xue cong lv yao jing 陈枫傅强 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China

In this work,the effect of dioctadecyl dimethyl ammonium chloride（DDAC,a kind of alkyl ammonium salt） on polar β phase content and the diameter of electrospun PVDF nanofibers was investigated for the first *** experimental results show that the diameter of the electrospun PVDF nanofiber could be largely reduced and the content of polar β phase also become dominant immediately by just adding a little amount of *** the mass fraction of DDAC reached 4%,the content of polar β phase increased by about 39.1% compared with PVDF nanofibers without ***,the crystallinity of PVDF nanofibers also increased with the addition of *** on the results,the possible mechanism of cooperative effect between electrospinning and DDAC on fiber diameter and formation of β phase in PVDF was discussed.

关键词： Diameter crystalline crystallinity polar cooperative adding Polar ammonium alkyl attributed

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From amides to urea derivatives or carbamates with chemospecific C–C bond cleavage at room temperature

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Organic Chemistry Frontiers 2022年第5期9卷 1354-1363页

作者： cong lv Dan Liu Tegshi Muschin Chaolumen Bai Agula Bao Yong-Sheng Bao College of Chemistry and Environmental Science Inner Mongolia Key Laboratory of Green catalysisInner Mongolia Normal UniversityHohhot010022China

Ureas and carbamates are common motifs in pharmaceuticals,agrochemicals,biologically active com-pounds and organocatalysis ***,we report a significant advancement in this area and present a general method for copper-catalyzed chemospecific C–C bond cleavage of amides to syn-thesize urea derivatives and carbamates at room temperature.

关键词： temperature cleavage bond

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围术期食管癌术后吻合口瘘的危险因素及风险预测模型构建与验证

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海南医学 2024年第7期35卷 1026-1030页

作者：时祥音白璟吕丛张冰窦晓雅南阳市中心医院胸外科食管病区河南南阳473000 南阳市中心医院泌尿外科河南南阳473000 南阳市中心医院门诊办公室河南南阳473000 南阳市中心医院感染科河南南阳473000

目的探讨围术期食管癌(EC)术后食管胃吻合口瘘(EGAL)的危险因素及风险预测模型构建与验证。方法回顾性分析2021年4月至2023年4月于南阳市中心医院行EC手术的176例患者的临床资料,根据术后是否发生EGAL分为EGAL组(n=30)和非EGAL组(n=146... 详细信息

目的探讨围术期食管癌(EC)术后食管胃吻合口瘘(EGAL)的危险因素及风险预测模型构建与验证。方法回顾性分析2021年4月至2023年4月于南阳市中心医院行EC手术的176例患者的临床资料,根据术后是否发生EGAL分为EGAL组(n=30)和非EGAL组(n=146)。收集两组患者的临床资料并进行单因素及多因素Logistic回归分析,以确定EC患者发生EGAL的独立危险因素,并将其纳入Rstudio 4.2.1软件以构建预测EC患者发生EGAL的Nomogram模型;绘制受试者工作特征(ROC)曲线和决策曲线(DCA),采用H-L拟合优度检验与校准曲线评估模型一致性,并进行内部验证。结果EGAL组患者的吸烟史、高血压、糖尿病、吻合方式为手工、手术时间、N分期为N2、术后白蛋白<30 g/L及术后肺部感染率明显高于非EGAL组,差异均有统计学意义(P<0.05);经多因素Logistic回归分析结果显示,高血压、糖尿病、手工吻合方式、术后白蛋白<30 g/L、术后肺部感染是EC患者术后发生EGAL的独立影响因素(P<0.05);基于Logistic回归分析构建Nomogram,Nomogram模型纳入了高血压、糖尿病、吻合方式、术后白蛋白及术后肺部感染5个因素;Nomogram模型预测EC患者术后发生EGAL的ROC曲线下面积(AUC)为0.914,95%CI为0.867~0.961(P<0.05),灵敏度为90.00%,特异度为79.50%;验证模型的AUC为0.875(P<0.001,95%CI:0.806~0.944),灵敏度为73.30%,特异性为90.40%。且模型校正曲线总体趋势接近理想曲线,表明该模型拟合度良好。结论高血压、糖尿病、吻合方式、术后白蛋白、术后肺部感染均是EC患者术后发生EGAL的危险因素,根据危险因素构建的Nomogram预测模型具有较好的预测效能。

关键词：食管癌食管胃吻合口瘘危险因素预测模型

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Syntheses,Crystal Structures and Fluorescent Properties of Two Zinc Complexes Assembled by Bis(imidazol)Ligands

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Chinese Journal of Structural Chemistry 2020年第10期39卷 1885-1891,1745页

作者： lv Meng-Ying lv cong YAN Guo-Song ZHOU Shi JIANG Wei LIU Bo LI Xiu-Mei Key Laboratory of Preparation and Applications of Environmental Friendly Materials(Jilin Normal University) Ministry of EducationChangchun 130103Chin Faculty of Chemistry Tonghua Normal UniversityTonghua 134002China

Two new complexes[Zn(nph)(bix)]n·nH2O(1)and[Zn(nba)2(bix)]n(2)(H2nph=4-nitrophthalic acid,Hnba=4-nitrobenzoic acid,bix=1,4-bis(imidazol-1-yl)-benzene)have been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,fluorescence spectrum,single-crystal and power X-ray *** 1 exhibits a three-dimensional(3D)framework,which is stabilized through C–H…O hydrogen bonds andπ-πstacking *** 2 shows a zero-dimensional structure,which is further extended into a three-dimensional supramolecular structure through C–H…O and C–H…N hydrogen bonding interactions.

关键词： hydrothermal synthesis crystal structure Zn(Ⅱ)complex 1 4-bis(imidazol-1-yl)-benzene

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Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

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Journal of Analysis and Testing 2022年第3期6卷 247-273页

作者： Yue Hou cong-cong lv Yan-Li Guo Xiao-Hu Ma Wei Liu Yan Jin Bao-Xin Li Min Yang Shi-Yin Yao Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province School of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710062China

Point-of-care testing(POCT),as a portable and user-friendly technology,can obtain accurate test results immediately at the sampling ***,microfluidic paper-based analysis devices(μPads)have attracted the eye of the public and accelerated the development of POCT.A variety of detection methods are combined withμPads to realize precise,rapid and sensitive *** article mainly introduced the development of electrochemistry and optical detection methods onμPads for POCT and their applications on disease analysis,environmental monitoring and food control in the past 5 ***,the challenges and future development prospects ofμPads for POCT were discussed.

关键词： Paper-based analysis device Point-of-care testing Detection methods Review

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Hybrid flow shop scheduling with assembly operations and key objectives: a novel neighborhood search

Hybrid flow shop scheduling with assembly operations and key...

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第30届中国控制与决策会议

作者： cong lv Deming Lei Wuhan University of Technology

In this study hybrid flow shop scheduling problem（HFSP） with unrelated parallel machines and assembly operations is considered, in which two tardiness objectives are minimized as key ones under the bounded condition that makespan is not allowed to exceed an upper bound. A novel neighborhood search with memory and global exchange（NSMG） is then proposed based on a part-based representation and a new dominance called limited dominance. Global exchange is cooperated with neighborhood search to improve solution quality. Extensive experiments are conducted to test the performance of NSMG finally. The results show that the preferential handling strategy of key objectives is reasonable and effective and NSMG is a very competitive method for the considered HFSP.

关键词： Hybrid flow shop scheduling Neighborhood search Assembly operation Key objective Limited dominance

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