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Microstructure Selection in Ton Class Ingot of Al_(17)Cr_(10)Fe_(33)Ni_(36)Mo_(2)Ti_(2) Eutectic High Entropy Alloy

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Acta Metallurgica Sinica(English Letters) 2024年第12期37卷 2008-2018页

作者： Xinbo Shi Yunji Qiu xiaoyu bai Yiming Chen Yongqiang Wang Tao Xu Jincheng Wang Junjie Li Zhijun Wang State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072China Xi’an Superalloy Technology Co. Ltd.Xi’an710299China Anhui Fukai Special Materials Co. Ltd.Xuancheng245300China

The eutectic high entropy alloys have attracted extensive attention and are considered one of the most promising new metal *** microstructures of large eutectic high entropy alloy ingot with excellent casting performance have been rarely *** this study,we have prepared a ton class eutectic high entropy alloy ingot via vacuum induction melting for the first *** evolution of microstructure and macro-segregation from the edge region to the core of the ingot were also *** was found that there was no significant macro-segregation in ton class eutectic high entropy alloy ingot,and chemical elements were distributed *** coupled growth of the primary phases and eutectic colonies were homogeneously distributed in the ingot,and there is no traditional columnar grain region from the edge region of the ingot to the *** tensile strength of the sample in the R/2 region of the ton class ingot with elongation greater than 10%is 892.3 MPa,showing an excellent comprehensive mechanical *** study exhibits an important guidance for the industrial application of large eutectic high entropy alloy casting ingot.

关键词： Eutectic high entropy alloy Ton class ingot Segregation Microstructure Mechanical properties

Bond Mechanical Properties of Glass Fiber Reinforced Polymer Anti-Floating Anchor in Concrete Baseplate

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Journal of Shanghai Jiaotong university(Science) 2021年第6期26卷 804-812页

作者： bai xiaoyu ZHENG Chen ZHANG Mingyi LIU Xueying KUANG Zheng School of Civil Engineering Qingdao University of TechnologyQingdao 266033ShandongChina Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone Qingdao 266033ShandongChina

Combined with fiber Bragg grating(FBG)sensing technology,four glass fiber reinforced polymer(GFRP)anti-floating anchors and four steel anti-floating anchors were tested for on-site destructive failure to investigate the anchoring performance and the bonding characteristics between GFRP anti-floating anchor and concrete *** test results show that bending GFRP anchor will be broken at the common boundary between vertical anchorage section and bending section during the pullout process,and the spring-back load provided by the rupture contributes to a decrease of bearing capacity and an inflection point on the load-slip *** loaddisplacement curve of the straight anchor GFRP anti-floating anchor is smoother and has better predictability than the same type of steel ***,different forms of GFRP anti-floating bolt have different bondslip constitutive *** introducing the sliding-slip correction factor of bending bolt,constitutive models describing the rising-section of sliding-slip relation of bending and straight-anchored GFRP anti-floating bolt are established *** model can fit the test results rightly.

关键词： glass fiber reinforced polymer(GFRP) anti-floating anchor bolt axial force bearing capacity loadslip constitutive relationship

不同固化剂加固滨海软土的强度特性室内试验研究

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工程勘察 2025年第1期53卷 1-6,25页

作者：张启军闫楠白晓宇李传斌刘云龙青岛业高建设工程有限公司山东青岛266042 青岛慧睿科技有限公司山东青岛266042 青岛理工大学土木工程学院山东青岛266520 青岛市城市规划设计研究院山东青岛266000 青岛市市政工程设计研究院有限责任公司山东青岛266100

为提高固化剂加固滨海软土的强度特性与时效性,通过室内试验研究固化剂类型、固化剂掺量、水灰比、搅拌均匀性、养护条件等因素作用下固化滨海软土强度的演化规律。试验结果表明:不同固化剂加固软土的抗压强度随着养护期龄的延长持续增... 详细信息

为提高固化剂加固滨海软土的强度特性与时效性,通过室内试验研究固化剂类型、固化剂掺量、水灰比、搅拌均匀性、养护条件等因素作用下固化滨海软土强度的演化规律。试验结果表明:不同固化剂加固软土的抗压强度随着养护期龄的延长持续增加,将水泥替换为HR软土固化剂可有效提高软土加固体的抗压强度。拌合时间越长,软土加固体的抗压强度越高;相同的拌合时间,水泥软土加固体的抗压强度远低于HR固化剂加固软土的抗压强度;利用HR软土固化剂加固软土能够在保障施工质量的基础上,有效缩短施工工期。随着水灰比的增加,软土加固体的抗压强度明显降低;相同的水灰比,HR固化剂加固软土的抗压强度均大于水泥软土加固体的抗压强度。软土加固体在养护过程中,温度与湿度在固化剂水化过程中发挥重要作用,影响软土加固体的抗压强度;相同的固化剂掺量,标准养护条件下软土加固体的抗压强度比低温养护提高2倍以上;软土加固体早期抗压强度随着养护期龄的延长增加显著,当期龄达到14 d后,随着期龄的增加软土加固体的抗压强度增长趋势明显变缓。

关键词：滨海软土固化技术抗压强度固化剂类型固化剂掺量水灰比拌合时间

ENO1 expression and Erk phosphorylation in PDAC and their effects on tumor cell apoptosis in a hypoxic microenvironment

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Cancer Biology & Medicine 2022年第11期19卷 1598-1616页

作者： Huizhi Sun Jing Mo Runfen Cheng Fan Li Yue Li Yuhong Guo Yanlei Li Yanhui Zhang xiaoyu bai Yalei Wang Xueyi Dong Danfang Zhang Jihui Hao Tianjin Medical University Cancer Institute&Hospital National Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinTianjin's Clinical Research Center for CancerTianjin 300060China Department of Pathology Tianjin Medical UniversityTianjin300070China

Objective: Hypoxia is an important feature of pancreatic ductal adenocarcinoma(PDAC). Previously, we found that hypoxia promotes ENO1 expression and PDAC invasion. However, the underlying molecular mechanism was remains ***: The relationship between ENO1 expression and clinicopathological characteristics was analyzed in 84 patients with PADC. The effects of CoCl2-induced hypoxia and ENO1 downregulation on the apoptosis, invasion, and proliferation of PDAC cells were evaluated in vitro and in vivo. Hypoxia-and ENO1-induced gene expression was analyzed by transcriptomic ***: The prognosis of PDAC with high ENO1 expression was poor(P < 0.05). High ENO1 expression was closely associated with histological differentiation and tumor invasion in 84 PDAC cases(P < 0.05). Hypoxia increased ENO1 expression in PDAC and promoted its migration and invasion. Apoptotic cells and the apoptosis marker caspase-3 in the CoCl_(2)-treated ENO1-sh group were significantly elevated(P < 0.05). Transcriptomic sequencing indicated that CoCl_(2)-induced PDAC cells initiated MAPK signaling. Under hypoxic conditions, PDAC cells upregulated ENO1 expression, thereby accelerating ERK phosphorylation and inhibiting apoptosis(P < 0.05). Consistent results were also observed in a PDAC-bearing mouse hindlimb ischemia ***: Hypoxia-induced ENO1 expression promotes ERK phosphorylation and inhibits apoptosis, thus leading to PDAC survival and invasion. These results suggest that ENO1 is a potential therapeutic target for PDAC.

关键词： Pancreatic cancer hypoxia ENOl apoptosis Erk phosphorylation

Study on Deformation Prediction of Metro- Running Tunnel under Building of Soil and Rock Strata

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建筑工程（中英文版） 2013年第1期1卷 6-11页

作者： xiaoyu bai Nan Yan Hailei Kou Mingyi Zhang School of Civil Engineering Qingdao Technological University Qingdao China 266033 College of Environmental Science and Engineering Ocean University of China Qingdao China 266100

Experimental Study on Macro-micro Mechanism of the Marble during Loading Damage Process

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建筑工程（中英文版） 2013年第3期1卷 60-67页

作者： Yu Cong Zaiquan Wang Liming Zhang xiaoyu bai SchoolofScience QingdaoTechnologicalUniversityQingdaoShandong266033China

Developing a Comprehensive Regime for Personal Information Protection in Networked Chinese Public Sectors

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Management Studies 2015年第1期3卷 13-20页

作者： Xiaomi An Shuyang Sun Wenlin bai Bin Zhang xiaoyu Huang Hepu Deng Renmin University of China Beijing China

With the increasing sharing and reuse of personal information resources for better public services, the effective protection and management of personal information as organizational and individual assets as well as social resources are becoming more and more important in networked Chinese public sectors. Existing studies of personal information protection in China is mainly conducted from the legal perspective with a focus on the development of appropriate legislation and policies at the national level. There is little research on how specific legislation and polices can actually be implemented in an effective manner and what impacts such legislation and policies have on individuals, organizations, and the society. To adequately address this issue, this study investigates the legal requirements for personal information protection based on the relevant laws, regulations, and standards in China. It proposes a comprehensive regime for personal information protection in the networked public sectors in China. Such a regime takes the advantages of existing discipline-based approaches, legal requirements, and control mechanisms for personal information protection. It can be used to facilitate the provision of public services in the networked Chinese public sectors through the adequate protection of personal information and the effective management of personal information.

关键词： information resources management personal information personal information protection public sector networked environment China

人工挖孔嵌岩灌注桩承载特性现场试验与机理分析

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土木建筑与环境工程 2017年第5期39卷 79-86页

作者：陈小钰张明义白晓宇青岛理工大学土木工程学院 266033 青岛理工大学蓝色经济区工程建设与安全协同创新中心山东青岛266033

以青岛市某大型工程为依托,对在泥质粉砂岩地基中的5根人工挖孔嵌岩灌注桩分别进行竖向静载荷试验与桩身内力测试。根据大直径嵌岩桩实测数据探讨大直径人工挖孔嵌岩灌注桩的荷载传递机理与竖向承载特性。试验结果表明:试桩荷载沉降(Q-s... 详细信息

以青岛市某大型工程为依托,对在泥质粉砂岩地基中的5根人工挖孔嵌岩灌注桩分别进行竖向静载荷试验与桩身内力测试。根据大直径嵌岩桩实测数据探讨大直径人工挖孔嵌岩灌注桩的荷载传递机理与竖向承载特性。试验结果表明:试桩荷载沉降(Q-s)曲线为缓变形,桩顶沉降量均小于11mm,卸载回弹率大,幅度为51%~75%,承载力较高,5根试桩均满足设计要求;在最大荷载下,5根嵌岩桩桩端阻力所占桩顶荷载比值均在10%~20%之间,随桩长、嵌岩深度(中风化)增大而减小,表现出端承摩擦桩的特性;桩身荷载自上而下逐步发挥,上覆土层先达到侧摩阻力极限值,在嵌岩段中部侧摩阻力达到峰值;桩入岩越深,安全储备量越大,在泥质粉砂岩中风化段,实测侧摩阻力约为规范推荐值的2.5倍,说明5根桩有较大的承载潜力;随着荷载的增大,嵌岩段分担的总阻力由39%上升至45%,嵌岩段侧摩阻力占主要比重,但桩端阻力分担荷载的比例上升速率较快;根据行业标准与静载试验数据,重新认识该地层人工挖孔嵌岩灌注桩的竖向承载特性,充分发挥其承载潜力,对工程桩桩身尺寸进行优化,达到节约材料和提高施工功效的目的,具有较好的经济效益。

关键词：挖孔桩泥质粉砂岩桩身应力桩侧摩阻力桩身优化

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砂土的双硬化特性与弹塑性本构模型

岩石力学与工程学报 2011年第2期30卷 373-381页

作者：彭芳乐雷亮白小宇同济大学地下建筑与工程系上海200092 同济大学岩土及地下工程教育部重点实验室上海200092 深圳市地铁集团有限公司广东深圳518026

基于高精度的丰浦砂三轴等向加卸载试验与多应力路径平面应变压缩试验结果,提出平面应变条件下的修正塑性功体积硬化函数,得到双硬化框架下的修正塑性功剪切硬化函数,建立应力路径不相关的丰浦砂修正塑性功剪切–体积双硬化函数。在该... 详细信息

基于高精度的丰浦砂三轴等向加卸载试验与多应力路径平面应变压缩试验结果,提出平面应变条件下的修正塑性功体积硬化函数,得到双硬化框架下的修正塑性功剪切硬化函数,建立应力路径不相关的丰浦砂修正塑性功剪切–体积双硬化函数。在该双硬化函数基础上,推导基于修正塑性功的增量型剪切–体积双硬化弹塑性刚度矩阵,构建可以考虑多种变形强度影响因素的丰浦砂本构模型。数值计算与室内试验结果的比较表明,该砂土双硬化弹塑性本构模型可以合理地模拟砂土材料的变形强度特性。

关键词：土力学砂土平面应变应力路径修正塑性功剪切–体积双硬化函数弹塑性模型