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Dynamic soil arching in piled embankment under train load of high-speed railways

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Earthquake Engineering and Engineering Vibration 2023年第3期22卷 719-730页

作者： niu tingting Yang Yule Ma Qianli Zou Jiuqun Lin Bin School of Civil Engineering and Architecture Anhui University of Science and TechnologyHuainan 232001China College of Civil and Transportation Engineering Hohai UniversityNanjing 210098China

Piled embankments have many advantages that have been applied in high-speed railway construction ***,the load transfer mechanism of piled embankments,such as soil arching and tension membranes,is still unclear,especially under dynamic *** investigate the soil arching and tension membrane under dynamic train loads on high-speed railways,a large-scale piled embankment model test with X-shaped piles as vertical reinforcement was performed,in which twenty-eight earth pressure cells were installed in the piled embankment and an M-shaped wave was adopted to simulate the high-speed railway train *** results show that dynamic soil arching only occurs when two bogies of a carriage pass by and disappears at other *** dynamic soil arching and membrane effect are the most significant under the concrete *** arching height,stress concentration ratio and pile-soil load sharing ratio have a minimal value at 25 *** dynamic soil arching degrades severely at 25 Hz,whose height at 25 Hz is only 0.35 times that at 5 *** arching height fluctuates over a narrow range with increasing loading *** stress concentration ratio and the pile-soil load sharing ratio increase monotonically as the loading amplitude increases.

关键词： dynamic soil arching membrane effect piled embankment train load model test

An Interpretation of Disgrace from the Perspective of Feminist Ethics

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An Interpretation of Disgrace from the Perspective of Femini...

作者： niu tingting 西安外国语大学

学位级别：硕士

作为当代最具有影响力的作家之一，库切分别于1983年和1999年两度荣获英国文学最高奖布克奖，并于2003年获得诺贝尔文学奖。库切的代表作《耻》发表于1999年，这部小说讲述了文学教授卢里因丑闻丢失职位之耻和女儿露西被黑人强暴之耻两... 详细信息

作为当代最具有影响力的作家之一，库切分别于1983年和1999年两度荣获英国文学最高奖布克奖，并于2003年获得诺贝尔文学奖。库切的代表作《耻》发表于1999年，这部小说讲述了文学教授卢里因丑闻丢失职位之耻和女儿露西被黑人强暴之耻两大中心事件，反映了后殖民时期南非人们努力摆脱殖民阴影，艰难探索未来的的生存状态，同时作品也对社会道德，普遍人性等主题进行了反思和探讨。本文拟用女性主义伦理学作为切入点对《耻》进行阐述，以女性主义伦理思想中的道德观为理论框架：即从女性追求两性平等、学会关怀他人、注重具体情境下的人际关系和谐、倡导母性思考这四个方面剖析小说中露西，索拉雅，梅来妮，罗莎琳德，斯沃特等几位女性形象与男主人公卢里的关系比较，探讨女性独特的道德观和道德体验，进而真正理解小说中女性人物追求两性平等和身体自由，重视情境道德和关怀他人，尊崇母性思考的道德诉求。本文主要分为六个部分。引言首先介绍了库切的生平与创作和小说《耻》的创作主题，其次阐述了文学伦理学批评、女性主义伦理学以及它的主要理论概念。其中着重论述了女性主义伦理学的道德价值观，如吉利根的两性平等的道德观、诺丁斯的关怀伦理观、特朗托的情境道德观以及狄拉克的提出的母性思考，并指出了两性在价值取向上的道德差异。本章后半部分对库切的作品做了国内外文献综述并简要概述了该论文的研究目的和创新意义。第二章从两性平等的女性道德观角度剖析小说中四位女性形象，通过对比她们与男主人公卢里的关系，来展现她们勇于追求独立，平等和自由的女性道德观。第三章从关怀伦理角度探索作为受害者的露西，对制造强暴袭击事件的黑人给予女性无私的关怀和宽恕，以及作为妻子的罗莎琳德，在前夫卢里的丑闻事件发生之后，给予体谅和关怀。通过分析这两位女性人物，女性的关怀思想得到充分的体现。第四章从情境道德观角度展开，论述了露西和斯沃特两位女性从事件的具体情境出发，努力创造和谐的人际关系。第五章从母性思考的伦理观角度探讨了卢里对女儿露西的伟大父爱以及露西对未出生的孩子的无私母爱。通过以上论证和分析，得出结论：小说《耻》中蕴含着女性独特的伦理思想和道德观，通过对女性人物的刻画，反映出了作者库切对女性道德观的思考和关注，同时也表达了作者希望通过此作品呼吁人们学会关爱，共创和谐人类社会的精神诉求。

关键词：《耻》女性主义伦理学两性平等关怀情境道德母性思考

股骨颈骨折空心螺钉内固定术后供养血管注射富血小板血浆效果分析

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中国烧伤创疡杂志 2025年第1期37卷 67-71页

作者：王芳张保龙齐欢欢牛婷婷郑州人民医院骨科河南郑州450003 郑州人民医院门诊部河南郑州450003

目的分析股骨颈骨折空心螺钉内固定术后供养血管注射富血小板血浆(PRP)的临床效果。方法选取2019年6月至2021年6月郑州人民医院收治的106例股骨颈骨折患者作为研究对象,按照空心螺钉内固定术后供养血管是否注射PRP将其分为试验组(53例)... 详细信息

目的分析股骨颈骨折空心螺钉内固定术后供养血管注射富血小板血浆(PRP)的临床效果。方法选取2019年6月至2021年6月郑州人民医院收治的106例股骨颈骨折患者作为研究对象,按照空心螺钉内固定术后供养血管是否注射PRP将其分为试验组(53例)和对照组(53例)。试验组患者空心螺钉内固定术后于供养血管注射PRP,对照组患者空心螺钉内固定术后不做处理,对比观察两组患者围手术期指标、骨折愈合时间、髋关节功能、骨痂生长情况以及不良事件发生情况。结果试验组患者手术时间明显长于对照组(t=16.915,P<0.001),完全负重所需时间、骨折愈合时间均明显短于对照组(t=12.610、8.213,P均<0.001),术中出血量与对照组无明显差异(t=1.685,P=0.095);术后1、3、6个月,试验组患者Harris评分、Fernandez-Esteve骨痂评分均明显高于对照组(术后1个月:t=8.919、6.118,P均<0.001;术后3个月:t=10.951、9.217,P均<0.001;术后6个月:t=7.024、6.937,P均<0.001);试验组患者术后不良事件发生率为9.43%,明显低于对照组患者的不良事件发生率30.19%(χ^(2)=7.185,P=0.007)。结论与单纯采用空心螺钉内固定治疗相比,于空心螺钉内固定术后给予供养血管注射PRP治疗股骨颈骨折,能够有效促进骨痂生长,明显缩短完全负重所需时间及骨折愈合时间,改善髋关节功能,减少股骨头坏死等不良事件的发生,临床应用价值更高。

关键词：股骨颈骨折空心螺钉内固定富血小板血浆髋关节功能骨痂生长

Ionic Liquid for Perovskite Solar Cells:An Emerging Solvent Engineering Technology

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Accounts of Materials Research 2021年第11期2卷 1059-1070页

作者： Lingfeng Chao tingting niu Yingdong Xia Yonghua Chen Wei Huang Frontiers Science Center for Flexible Electronics(FSCFE) Institute of Flexible Electronics(IFE)Northwestern Polytechnical University(NPU)Xi’an 710072China Key Laboratory of Flexible Electronics(KLOFE)&Institution of Advanced Materials(IAM) Nanjing Tech University(Nanjing Tech)Nanjing 211816 JiangsuChina

CONSPECTUS:Perovskite solar cells(PSCs)have,in recent years,become one of the most in-depth photovoltaic materials in many different disciplines due to their long-range charge carrier diffusion lengths,strong light absorption,easy tuning of the band gaps,low defect density,and solution *** power conversion efficiency(PCE)of single-junction PSCs has reached a certified value of 25.5%,which has caught up with or even surpassed traditional photovoltaic technologies,such as silicon(Si)solar cells,thin film solar cell,*** addition to the performance of PSCs comparable to traditional photovoltaic technology,its biggest feature is that it can be prepared by a solution *** preparation process of the solution method simplify the film preparation process and greatly reduce the preparation *** addition,the solution method provides a favorable option for the energy supply of flexible wearable devices in the future.

关键词： Solar film preparation

High-strong-ductile magnesium alloys by interactions of nanoscale quasi-long period stacking order unit with twin

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Journal of Magnesium and Alloys 2024年第12期12卷 4953-4965页

作者： Lutong Zhou tingting niu Guodong Zou Huhu Su Suyun He Shijian Zheng Yulong Zhu Peng Chen Carlos Fernandez Qiuming Peng State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004PR China School of Materials Science and Engineering Hebei University of TechnologyTianjin300401PR China Key Laboratory of Automobile Materials of Ministry of Education&School of Materials Science and Engineering Nanling CampusJilin UniversityChangchun 130025PR China School of Pharmacy and life sciences Robert Gordon UniversityAberdeenAB107GJUK

Magnesium alloys with high strength in combination of good ductility are especially desirable for applications in transportation,aerospace and bio-implants owing to their high stiffness,abundant raw materials,and environmental ***,the majority of traditional strengthening approaches including grain refining and precipitate strengthening can usually prohibit dislocation movement at the expense of ductility ***,we report an effective strategy for simultaneously enhancing yield strength(205 MPa,2.41 times)and elongation(23%,1.54 times)in a Mg-0.2Zn-0.6Y(at.%)alloy at room temperature,based on the formation of a nanosized quasi-long period stacking order unit(QLPSO)-twin structure by ultrahigh-pressure treatment followed by *** formation reason and strong-ductile mechanism of the unique QLPSO-twin structure have been clarified by transmission electron microscopy observations and molecule dynamics *** improved strength is mainly associated with the presence of nanosized QLPSO and the modified∠86.3oQLPSO-twin boundary(TB)interface,effectively pinning dislocation ***,the enhanced ductility is related to the∠3.7oQLPSO-TB interface and micro-kinks of nanoscale QLPSO,providing some paths for plastic *** strategy on the QLPSO-twin structure might provide an alternative perspective for designing innovative hexagonal close-packed structural materials with superior mechanical properties.

关键词： QLPSO Twin boundary Molecule dynamics High resolution TEM

Stability of Sn-Pb mixed organic–inorganic halide perovskite solar cells:Progress,challenges,and perspectives

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Journal of Energy Chemistry 2022年第2期31卷 371-404页

作者： Shaoshen Lv Weiyin Gao Yanghua Liu He Dong Nan Sun tingting niu Yingdong Xia Zhongbin Wu Lin Song Chenxin Ran Li Fu Yonghua Chen Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringXi’an 710072ShaanxiChina Key Laboratory of Flexible Electronics(KLOFE)&Institution of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816JiangsuChina School of Materials Science and Engineering Northwestern Polytechnical UniversityXi’an 710072ShaanxiChina

The exploration of low bandgap perovskite material to approach Shockley-Queisser limit of photovoltaic device is of great significance,but it is still *** the past few years,tin–lead(Sn-Pb)mixed perovskites with low bandgaps have been rapidly developed,and their single junction solar cells have reached power conversion efficiency(PCE)over 21%,which also makes them ideal candidate as low bandgap sub-cell for tandem ***,due to the incorporation of unstable Sn^(2+),the stability issue becomes the vital problem for the further development of Sn-Pb mixed perovskite solar cells(PSCs).In this review,we are dedicated to give a full view in current understanding on the stability issue of SnPb mixed perovskites and their *** begin with the demonstration on the origin of instability of Sn-Pb mixed perovskites,including oxidation of Sn^(2+),defects,and interfacial layer induced ***,the up-to-date developments on the stability improvement of Sn-Pb mixed perovskites and their PSCs is systematically reviewed,including composition engineering,additive engineering,and interfacial *** last,the current challenges and future perspectives on the stability study of Sn-Pb mixed PSCs are discussed,which we hope could promote the further application of Sn-Pb mixed perovskites towards commercialization.

关键词： Sn-Pb mixed perovskites Stability Interfacial defects Energy level mismatch Solar cells

Law School of Nankai University Holds International Seminar on National Human Rights Action Plan

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The Journal of Human Rights 2009年第4期8卷 38-39页

作者： niu tingting & DONG YAN

The Information Office of the State council issued the first National Human Rights Action Plan of China （NHRAP）（2009-2010） on April 13, 2009. The Nankai University participated in the drafting of this significant national document on human rights, with three teachers invited one after another to work at the panel of experts under the drafting committee. In cooperation with the Raoul Wallenberg Institute of Human Rights and Humanitarian Law （RWlHRHL） of Sweden, the Research Center for Human Rights under Law School of the university held an international seminar titled ＂Formulation and Implementation of NHRAP- Swedish Experience.＂

关键词： In School Law School of Nankai University Holds International Seminar on National Human Rights Action Plan

Stable Metal–Halide Perovskite Colloids in Protic Ionic Liquid

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CCS Chemistry 2022年第10期4卷 3264-3274页

作者： Hao Gu tingting niu Shouwei Zuo Yongqing Cai Lingfeng Chao Peter Müller-Buschbaum Yingdong Xia Jing Zhang Guichuan Xing Yonghua Chen Key Laboratory of Flexible Electronics(KLOFE) Institution of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing 211816Jiangsu Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoTaipa 999078Macao Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072 Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049 University of Chinese Academy of Sciences Beijing 100049 Lehrstuhl für Funktionelle Materialien Physik DepartmentTechnische Universität MünchenGarching 85748 Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenGarching 85748

Obtaining long-term stable and robust perovskite colloids solution remains an important scientific challenge due to the limited interaction between solvent and perovskite ***,we unveil the formation mechanism of chemically robust perovskite precursor solutions under ambient conditions using methylammonium acetate(CH3NH3•CH3COO,MAAc)protic ionic liquid(PIL)*** of nanometers colloids are assembled on the molecular level via regular oriented gel-like lamellae with a mean thickness of 34.69 nm,width of 56.81 nm,and distance of 91.05 nm.

关键词： perovskite colloids protic ionic liquid X-ray absorption fine structure spectroscopy coordination interaction

何为更好的批判:对批判理论内在批判方法的辨认与分析

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社会科学 2024年第5期 62-70页

作者：牛婷婷上海社会科学院哲学研究所

法兰克福学派的批判理论有一系列方法论上的抱负,体现在其研究进路(跨学科)、任务(实现解放)和对象(社会现实)上。这些抱负一方面使法兰克福学派的批判理论始终处于马克思主义的传统之中,另一方面也对它所主张的批判方法提出了挑战。重... 详细信息

法兰克福学派的批判理论有一系列方法论上的抱负,体现在其研究进路(跨学科)、任务(实现解放)和对象(社会现实)上。这些抱负一方面使法兰克福学派的批判理论始终处于马克思主义的传统之中,另一方面也对它所主张的批判方法提出了挑战。重新审视批判理论对批判的理解以及这种理解的思想来源与动机,可以辨认出一种黑格尔—马克思的思想脉络中的特殊的内在批判形式。这种内在批判是批判理论面对后形而上学时代的理性危机做出的回应,它通过将自身置于具体的历史语境来完成理性批判的去先验化;并呈现出兼有自主性与合理性的辩证法结构,既能反思自身的运行状况,又能解释自身的批判动力。进而,内在批判可以被理解为社会主体的理性能力及其潜能的不断实现,以及据此对社会的内在规范性结构的打破与重建,从而为社会批判提供一种现实化力量。

关键词：内在批判理性危机辩证法去先验化理性重构