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Effect of gas saturation on P-wave velocity in tight sandstone

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Applied Geophysics 2024年第3期21卷 487-495,617页

作者： Pan bao-Zhi Zhou Wei-Yi Guo Yu-Hang Fang Chun-Hui Zhang Li-hua College of Geo-exploration Science and Technology Jilin UniversityChangchun 130026China

By measuring the variation of the P-and S-wave velocities of tight sandstone samples under water saturation,it was confirmed that with the decrease in water saturation,the P-wave velocity first decreased and then *** variation in velocity was influenced by the sandstone’s *** commonly used Gassmann equation based on fluid substitution theory was *** the calculated results with the measured data,it was found that the Gassmann equation agreed well with the measured data at high water saturation,but it could not explain the bending phenomenon of P-wave velocity at low *** indicated that these equations could not accurately describe the relationship between fluid content and rock acoustic *** reasons for this phenomenon were discussed through Taylor’s *** coefficients of the fitting formula were calculated and verified by fitting the measured acoustic velocity changes of the *** relationship between P-wave velocity and saturation was discussed,which provides experimental support for calculating saturation using seismic and acoustic logging data.

关键词： Tight sandstone Saturation model Reservoir parameters Acoustic wave measurement

基于动态混合RANS/LES模型的液力变矩器内部流场的数值模拟

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吉林大学学报（工学版） 2024年第4期54卷 926-937页

作者：鄢万斌杨孔华金开雕陈素姣章勇华刘春宝柳工柳州传动件有限公司传动件研究所广西柳州545007 广西柳工机械股份有限公司广西柳州545007 吉林大学机械与航空航天工程学院长春130022

针对传统的一维束流研究方法无法对高功率密度液力变矩器工作腔内部复杂的时变瞬态湍流流动状态进行描述的问题,通过对计算流体力学(CFD)计算中的湍流模型进行设置,将RANS、LES、DES和SBES模型与精细六面体网格和介质动态物理化学特性... 详细信息

针对传统的一维束流研究方法无法对高功率密度液力变矩器工作腔内部复杂的时变瞬态湍流流动状态进行描述的问题,通过对计算流体力学(CFD)计算中的湍流模型进行设置,将RANS、LES、DES和SBES模型与精细六面体网格和介质动态物理化学特性进行高效的耦合集成,为液力变矩器(TC)瞬态仿真提供指导,以预测其外特性性能和复杂内流场分布。通过定性、定量分析液力变矩器内部的流动结构和导轮叶片边界层涡系拟序结构的时序演化,发现动态混合模型(DHRL)中的应力混合涡模拟(SBES)方法能够充分辨视工作腔内边界层的流动,实现了多流域耦合复杂流动现象的精准捕捉,并通过台架实验得到原始特性预测结果的最大误差不足4%。另外,本文还阐明了工作腔内流动损失产生机制,揭示了涡结构产生、发展、输运、破碎及合成等一系列主导湍流转捩过程的流动机制,为高效地开发新产品以及改进原有产品提供了计算方法。

关键词：液力变矩器尺度解析模拟内流场计算流体力学

A pathological joint-liver axis mediated by matrikine-activated CD4^(+)T cells

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2679-2693页

作者： Junzhi Yi Hui Zhang Fangyuan bao Zhichu Chen Yuliang Zhong Tianning Ye Xuri Chen Jingyi Qian Mengya Tian Min Zhu Zhi Peng Zongyou Pan Jianyou Li Zihao Hu Weiliang Shen Jiaqi Xu Xianzhu Zhang Youzhi Cai Mengjie Wu hua Liu Jing Zhou Hongwei Ouyang Department of Sports Medicine of the Second Affiliated Hospital and Liangzhu LaboratoryZhejiang University School of MedicineHangzhouChina Dr.Li Dak Sum&Yip Yio Chin Center for Stem Cells and Regenerative Medicine Zhejiang University School of MedicineHangzhouChina Stomatology Hospital School of StomatologyZhejiang University School of MedicineZhejiang Provincial Clinical Research Center for Oral DiseasesHangzhouChina The MOE Key Laboratory of Biosystems Homeostasis&Protection The Key Laboratory of Cancer Molecular Cell Biology of Zhejiang ProvinceLife Sciences InstituteZhejiang UniversityHangzhouChina Department of Orthopedics Huzhou Central HospitalAffiliated Huzhou HospitalZhejiang University School of MedicineHuzhouChina China Orthopedic Regenerative Medicine Group(CORMed) HangzhouChina Department of Orthopedics The First Affiliated HospitalZhejiang University School of MedicineHangzhouChina

The knee joint has long been considered a closed *** pathological effects of joint diseases on distant organs have not been ***,our clinical data showed that post-traumatic joint damage,combined with joint bleeding(hemarthrosis),exhibits a worse liver function compared with healthy *** mouse model,hemarthrosis induces both cartilage degeneration and remote liver ***,we found that hemarthrosis induces the upregulation in ratio and differentiation towards Th17 cells of CD4^(+)T cells in peripheral blood and *** of CD4^(+)T cells reverses hemarthrosis-induced liver *** of cartilage matrix induced by hemarthrosis upregulates serological type Ⅱ collagen(COL Ⅱ),which activates CD4^(+)T *** application of a COL Ⅱ antibody blocks the ***,bulk RNAseq and single-cell qPCR analysis revealed that the cartilage Akt pathway is inhibited by blood ***-articular application of Akt activator blocks the cartilage degeneration and thus protects against the liver impairment in mouse and pig *** together,our study revealed a pathological joint-liver axis mediated by matrikine-activated CD4^(+)T cells,which refreshes the organ-crosstalk axis and provides a new treatment target for hemarthrosis-related disease.

关键词： degeneration damage inhibited

非贵金属催化电极Ni/C@CF的制备及绿色类Fenton性能

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高等学校化学学报 2024年第2期45卷 125-132页

作者：成施雨杨灵包芮于陈宸崔萌萌张谷令李华中央民族大学民族地区生态环境国家民委重点实验室北京100081 中央民族大学生命与环境科学学院北京100081 中央民族大学理学院北京100081

传统芬顿(Fenton)法利用Fe2+催化H_(2)O_(2)产生具有强氧化性的羟基自由基(•OH),可以高效氧化降解水中有机污染物,但其操作pH范围窄(pH≈3)和易产生铁絮凝沉淀的缺点限制了其应用发展.原子氢H*作为一种单电子供体,可以将电子快速转移到H... 详细信息

传统芬顿(Fenton)法利用Fe2+催化H_(2)O_(2)产生具有强氧化性的羟基自由基(•OH),可以高效氧化降解水中有机污染物,但其操作pH范围窄(pH≈3)和易产生铁絮凝沉淀的缺点限制了其应用发展.原子氢H*作为一种单电子供体,可以将电子快速转移到H_(2)O_(2)中,生成•OH,适用于广泛的pH值,没有铁污泥产生,是一种新型高效绿色芬顿法.然而,原子H*更易相互结合形成H_(2),极不稳定,因此,探索合适的电催化剂对H*绿色Fenton的应用起着至关重要的作用.本文以炭黑作为载体,通过液相还原法制备了具有催化活性高、性能稳定的Ni/C@碳毡(Ni/C@CF)非贵金属电催化材料,制备的Ni纳米粒子均匀分散在炭黑上.以此电极材料为阴极,构建绿色Fenton催化体系,能够催化H_(2)O和H+生成H*,进而催化H_(2)O_(2)产生•OH,高效降解去除水中抗生素污染物.通过调节制备方法、电压、溶液pH值及外加氧化剂量,确定了该体系下的最佳反应条件.

关键词：芬顿反应原子氢 Ni/C@CF材料电催化有机污染物

基于量子反应均衡的政府与共享单车企业停车管理博弈分析

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控制与决策 2024年第2期39卷 641-648页

作者：张书婧贾顺平彭芃毛保华北京交通大学交通运输学院北京100044 北京交通大学综合交通运输大数据应用技术交通运输行业重点实验室北京100044 北京交通大学中国综合交通研究中心北京100044

共享单车停车问题是城市交通治理中最主要的问题之一,其表面为共享单车用户停车行为不规范、共享单车企业管理调度不及时所致,究其本质实为共享单车各利益主体缺乏有效协同治理机制、停车权责划分不清晰、成本分担失衡的结果.考虑政府... 详细信息

共享单车停车问题是城市交通治理中最主要的问题之一,其表面为共享单车用户停车行为不规范、共享单车企业管理调度不及时所致,究其本质实为共享单车各利益主体缺乏有效协同治理机制、停车权责划分不清晰、成本分担失衡的结果.考虑政府与共享单车企业的有限理性,建立扩展式博弈的量子反应均衡(QRE)模型分析双方停车管理博弈机理,并利用Gambit软件进行算例仿真分析.研究表明:双方博弈结果随理性程度增加逐渐趋向于基于完全理性的子博弈精炼纳什均衡,政府掌握更多企业运营信息有利于达到社会效用最大化的博弈结果;政府引入有效处罚措施或主导负责停车管理可以降低自身的财政支出和社会总成本,建立量化的处罚标准能够促进企业主动承担停车管理责任;有限理性程度、违停数量、激励机制和科技手段运行效率会影响企业的停车管理策略选择.

关键词：共享单车停车治理研究有限理性量子反应均衡扩展式博弈仿真

论人工智能体的价值设计方法:优势、问题与重构

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自然辩证法研究 2024年第7期40卷 91-98页

作者：张浩鹏夏保华东南大学哲学与科学系南京211189

价值设计方法认为,人工智能体设计既要考虑技术可行性,也应考察伦理价值要素,是技术实践和价值实践的统一。人工智能体的价值实践要发现并建构相关伦理价值原则,考察伦理情境中的“人”“物”“环境”等要素及其与人工智能体的价值关系... 详细信息

价值设计方法认为,人工智能体设计既要考虑技术可行性,也应考察伦理价值要素,是技术实践和价值实践的统一。人工智能体的价值实践要发现并建构相关伦理价值原则,考察伦理情境中的“人”“物”“环境”等要素及其与人工智能体的价值关系,呈现伦理交互图景。人工智能体技术实践应与价值实践持续互动、反馈,寻求自身合理阈限。应完善人工智能体价值设计方法,增强人工智能体伦理问题结构化、系统性分析以及动态性考察,统筹微观技术性与非技术性价值实践方法使其有效协作,肯定人工智能体与人类以及非人类存在的道德地位及彼此互构,推动人机优化共生。

关键词：人工智能体技术实践价值实践价值设计方法

Establishment and performance analysis of a new multiplex detection method for influenza an and B virus antigen

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World Journal of Clinical Cases 2024年第23期12卷 5338-5345页

作者： Cheng-Jing Xia bao-hua Li Yan-Ni Guo Xiao-He Zhou Run-Ling Zhang Ying-No Niu Department of Clinical Laboratory West WingShenzhen Hospital(Guangming)of University of Chinese Academy of SciencesShenzhen 518106Guangdong ProvinceChina Laboratory Nanjing Vazyme Biotech Co.LtdNanjing 210033Jiangsu ProvinceChina

BACKGROUND Influenza A and B virus detection is pivotal in epidemiological surveillance and disease *** and accurate diagnostic techniques are crucial for timely clinical intervention and outbreak *** dot-encoded microspheres have been widely used in *** integration of quantum dot-encoded microspheres with flow cytometry is a well-established technique that enables rapid ***,establishing a multiplex detection method for influenza A and B virus antigens based on flow cytometry quantum dot microspheres will help in disease *** To establish a codetection method of influenza A and B virus antigens based on flow cytometry quantum dot-encoded microsphere technology,which forms the foundation for the assays of multiple respiratory virus *** Different quantum dot-encoded microspheres were used to couple the monoclonal antibodies against influenza A and *** known influenza A and B antigens were detected both separately and simultaneously on a flow cytometer,and the detection conditions were optimized to establish the influenza A and B antigen codetection method,which was utilized for their detection in clinical *** results were compared with the fluorescence quantitative polymerase chain reaction(PCR)method to validate the clinical performance of this *** The limits of detection of this method were 26.1 and 10.7 pg/mL for influenza A and B antigens,respectively,which both ranged from 15.6 to 250000 pg/*** the clinical sample evaluation,the proposed method well correlated with the fluorescent quantitative PCR method,with positive,negative,and overall compliance rates of 57.4%,100%,and 71.6%,*** A multiplex assay for quantitative detection of influenza A and B virus antigens has been established,which is characterized by high sensitivity,good specificity,and a wide detection range and is promising for clinical applications.

关键词： Influenza A Influenza B Quantum dot microspheres Antigen detection Multiplex detection

泛血管疾病患者融合病房多学科协作护理管理模式的构建与实践

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中华护理杂志 2024年第13期59卷 1548-1555页

作者：鲍向英冯佳赵华兰美娟浙江大学医学院附属第二医院护理部杭州市310009

目的构建“组织-培训-应急-联合-质控”五位一体的泛血管疾病患者融合病房多学科协作护理管理模式,并探讨其实践效果。方法在文献研究及专家会议的基础上,形成泛血管疾病患者融合病房多学科协作护理管理模式,包括实施精准、动态、智能... 详细信息

目的构建“组织-培训-应急-联合-质控”五位一体的泛血管疾病患者融合病房多学科协作护理管理模式,并探讨其实践效果。方法在文献研究及专家会议的基础上,形成泛血管疾病患者融合病房多学科协作护理管理模式,包括实施精准、动态、智能化的全院床位统筹调配;制订多学科培训方案;建立急危重症病例救治保障机制;构建多学科护理团队联合管理的规范化路径;建立智能化及同质化的护理质量控制链。于2022年7月—2023年12月在浙江省某三级甲等医院心脑血管病院区应用该管理模式,收集泛血管疾病出院患者平均住院日、治愈好转率及心肺复苏成功率等指标,并调查患者满意度。结果应用泛血管疾病患者融合病房多学科协作护理管理模式期间,收治泛血管疾病患者5416例,平均住院日为(6.11±0.73)d,治愈好转率为98.06%(5311/5416),心肺复苏成功率为94.12%,无不良事件发生。泛血管疾病患者总体满意度得分从2022年第4季度的(92.74±1.68)分提升至2023年第4季度的(98.21±0.55)分(P<0.001)。结论泛血管疾病患者融合病房多学科协作护理管理模式的应用为医院培养跨专业护理人才、促进资源有效整合、优化健康管理方式探索了一条新路径,切实提升了医院现有资源的利用率和患者就医体验感。

关键词：泛血管疾病融合病房多学科协作护理管理研究就医体验

The Educational Adaptive-optics Solar Telescope at the Shanghai Astronomy Museum

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Astronomical Techniques and Instruments 2024年第3期1卷 171-178页

作者： Zhimao Du Qing Lin Xuejun Rao Yue Zhong Jiawen Yao hua bao Libo Zhong Yu Liang Hui Zhang Shanghai Astronomy Museum Shanghai 201306China National Laboratory on Adaptive Optics Chengdu 610209China The Laboratory on Adaptive Optics Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Yunnan Observatories Chinese Academy of SciencesKunming 650216China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China

The Educational Adaptive-optics Solar Telescope(EAST)at the Shanghai Astronomy Museum has been running routine astronomical observations since *** is a 65-cm-aperture Gregorian solar telescope for scientific education,outreach,and *** telescope system is designed in an“open”format so that the solar tower architecture can be integrated with it,and visitors can watch the observations live from inside the *** with adaptive optics,a high-resolution imaging system,and an integral field unit spectro-imaging system,this telescope can obtain high-resolution solar images in the TiO and Hαbands,and perform spectral image reconstruction using 400 optical fibers at selected *** can be used not only in public education and scientific outreach but also in solar physics research.

关键词： Astronomy museum Sun observation Adaptive optics Integral field unit