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Low-cost (ZrCu)50-xTax high temperature shape memory alloys showing excellent shape memory effect

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Progress in Natural Science:Materials International 2022年第3期32卷 369-374页

作者： weihong gao Xiaoyang Yi Bin Sun Yudong Fu Xianglong Meng College of Materials Science and Chemical Engineering Harbin Engineering University College of Nuclear Equipment and Nuclear Engineering Yan Tai University School of Materials Science and Engineering Harbin Institute of Technology

ZrCu-based alloys, as one of the most potential high-temperature shape memory alloys, show quite high martensitic transformation temperature, relatively low price for the raw materials, and good casting fluidity. In this work, the martensitic transformation(MT) and shape memory effect of (ZrCu)50-xTaxhigh-temperature shape memory alloys were systematically investigated. Both X ray diffraction and SEM backscattered electron image demonstrated the coexistence of the main phase monoclinic martensite phase and the second phase Ta2Cu. SEM results also revealed that increasing Ta content resulted in a larger volume fraction of Ta2Cu phase. Differential scanning calorimetry results showed that the MT temperatures remarkably increased with Ta addition. The ductility of the (ZrCu)50-xTaxalloys was reduced to some degree with increasing Ta content. The shape memory effect was improved significantly, in which(ZrCu)98Ta2alloy showed the 6.19% maximum recovery strain during 8% pre-strain under compression at 25℃.

关键词： ZrCu-Based alloys High-temperature shape memory alloys Microstructure Shape memory effect Martensitic transformation

Strong interface interaction and internal electric field promote electron transfer of Bi_(2)O_(2)S/NiFe_(2)O_(4) heterojunction for photocatalytic antibiotic degradation

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Journal of Materials Science & Technology 2023年第27期158卷 145-155页

作者： Shaoxuan Pang Yilin Dong Dongyu Xu Qiuwen Wang weihong gao Lijun Zhang Kang Wang Guangming Zhang Longyi Lv Yuguo Xia Zhijun Ren Pengfei Wang School of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Tianjin Key Laboratory of Clean Energy and Pollutant Control Tianjin 300401China School of Chemistry and Chemical Engineering National Engineering Research Center for Colloidal MaterialsShandong UniversityJinan 250100China

Heterojunction photocatalysts have shown considerable activities for organic pollutants degradation.However,the faint connection interface and inferior charge shift efficiency critically block the property of heterojunction photocatalysis.Herein,Bi_(2)O_(2)S/NiFe_(2)O_(4) nanosheets heterojunction with ultrastrong inter-face interaction and high internal electric field are designed by an in-situ growth method.Tentative and theoretical consequences prove that the interfacial interaction and internal electric field not only act as the electron flow bridge but also decrease the electrons shift energy obstacle,thus speeding up electrons transfer and achieving effective spatial electron-hole separation.Therefore,a large amount of·O_(2)^(-)and holes as active species were generated.Remarkably,Bi_(2)O_(2) S/NiFe_(2)O_(4) establishes a considerably boosted photocatalytic performance for tetracycline degradation(0.032 min^(-1)),which is about 14.2-fold and 7.8-fold of the pristine BOS and NFO,respectively.This work provides a promising motivation for modulating charge transfer by interface control and internal electric field to boost photocatalytic performance.

关键词： Bi_(2)O_(2)S/NiFe_(2)O_(4) S-scheme heterojunction Ultrastrong interface interaction Internal electric field Active species Photocatalytic degradation

Microstructure evolution and superelasticity behavior of Ti-Ni-Hf shape memory alloy composite with multi-scale and heterogeneous reinforcements

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Journal of Materials Science & Technology 2020年第7期42卷 113-121页

作者： Xiaoyang Yi Bin Sun weihong gao Xianglong Meng Zhiyong gao Wei Cai Liancheng Zhao School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

In the present study,the in-situ TiB whisker was introduced into the Ti-Ni-Hf shape memory alloy composite by the in-situ reaction of the Ti-Ni-Hf alloy powder and TiB2 powders.The(Ti,Hf)2 Ni phase also precipitated,accompanied with the formation of TiB phase.Moreover,the residual TiB2 particles can be observed,as the TiB2 content was higher than 0.7 wt%.Thereinto,the larger scale reinforcements constituted the quasi-continuous network structure.The smaller scale reinforcements distributed in the interior of the network structure.The two-scale reinforcements showed the uniform distribution at macroscopic level and inhomogeneous distribution at microscopic level.The single stage B19?B2 martensitic transformation occurred in the Ti-Ni-Hf composites.In addition,the martensitic transformation temperatures continuously decreased with the increased TiB2 content owing to the compositional and mechanical effect.The moderate TiB2 addition not noly enhanced the matrix strength,but also significantly improved the superelasticity.The excellent superelaticity with the completely recoverable strain of 4%can be obtained in the Ti-Ni-Hf composite containing 0.7 wt%TiB2.

关键词： Ti-Ni-Hf composite Shape memory alloy Microstructure Martensitic transformation High temperature superelasticity

量子化学计算白藜芦醇与芝麻酚在油脂中的抗氧化协同作用

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食品与机械 2024年第1期40卷 11-16页

作者：高伟洪曲潇笛姚云平李昌模天津科技大学食品科学与工程学院天津300457

目的:研究白藜芦醇与芝麻酚间的抗氧化协同机理。方法:通过DPPH和氢过氧化物分别检测葵花子油中自由基和过氧自由基的含量变化,并结合诱导期的测定,优化组合白藜芦醇与芝麻酚二者比例,并采用量子化学计算模拟反应过程。结果:在180℃加热... 详细信息

目的:研究白藜芦醇与芝麻酚间的抗氧化协同机理。方法:通过DPPH和氢过氧化物分别检测葵花子油中自由基和过氧自由基的含量变化,并结合诱导期的测定,优化组合白藜芦醇与芝麻酚二者比例,并采用量子化学计算模拟反应过程。结果:在180℃加热2 h,添加白藜芦醇与芝麻酚的葵花籽油中,总自由基含量分别为(0.08±0.03),(0.20±0.03)mol/L,相比于空白[(0.44±0.01)mol/L],白藜芦醇具有最佳抑制效率,且芝麻酚清除过氧自由基的能力最强。二者在纯化的葵花籽油中发生协同作用的最佳添加量为1400,200 mg/kg,且在180℃降解速率下,白藜芦醇具有保护芝麻酚的作用。结论:利用量子化学的手段发现二者存在动态平衡的过程,由于白藜芦醇的添加量是芝麻酚的7倍,所以反应更倾向于白藜芦醇向芝麻酚自由基供H。

关键词：芝麻酚白藜芦醇自由基量子计算协同作用

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再分散法制备低角度依赖结构色织物

毛纺科技 2024年第3期52卷 7-13页

作者：潘斌杰李月佳辛宇田红柳高伟洪杨树上海工程技术大学纺织服装学院上海201620

为了研究更为绿色环保的染色技术,提出了以再分散法在纺织品表面构筑非晶光子晶体结构。将经过一次重力沉降后的二氧化硅薄膜刮下,经过研磨后在织物上进行二次重力沉降,即可将非彩虹结构色与纺织品相结合。在不同温度的自组装环境下,以... 详细信息

为了研究更为绿色环保的染色技术,提出了以再分散法在纺织品表面构筑非晶光子晶体结构。将经过一次重力沉降后的二氧化硅薄膜刮下,经过研磨后在织物上进行二次重力沉降,即可将非彩虹结构色与纺织品相结合。在不同温度的自组装环境下,以不同的二氧化硅质量浓度以及不同体积在不同的组织结构上进行实验,研究温度、质量浓度、体积、组织结构等因素对非晶光子晶体结构的影响。结果表明:当二氧化硅悬浮液质量浓度为25 mg/mL时,体积为2 mL时,在40℃的环境下进行自组装可获得较好的非晶光子晶体结构色织物;在同等实验条件下,选择的织物的组织结构越平整,纱线排列越紧密,织物内的孔隙越小,最终组成的颜色效果越佳。

关键词：结构生色织物非晶光子晶体低角度依赖再分散法二氧化硅纳米颗粒

佛山地区HKαα地中海贫血的基因诊断与临床表型分析

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中国优生与遗传杂志 2024年第2期32卷 393-396页

作者：高维鸿黄广强钟沛沛杨发达梁丽笙佛山市南海区妇幼保健院检验科广东佛山528200 佛山市南海区妇幼保健院产前诊断中心广东佛山528200

目的对佛山地区HKαα地中海贫血病例进行基因诊断,分析HKαα病例基因型及临床表型,为遗传咨询和产前诊断提供指导依据。方法分析2020—2023年在佛山市南海区妇幼保健院进行地贫基因诊断的患者16711例,选取琼脂糖凝胶电泳扩增产物显... 详细信息

目的对佛山地区HKαα地中海贫血病例进行基因诊断,分析HKαα病例基因型及临床表型,为遗传咨询和产前诊断提供指导依据。方法分析2020—2023年在佛山市南海区妇幼保健院进行地贫基因诊断的患者16711例,选取琼脂糖凝胶电泳扩增产物显示3.7弱条带及出现3条带(3.7弱条带、正常α2条带和SEA条带)的标本,进行血常规及HKαα基因诊断,分析病例的基因型及临床表型。结果共检测到29例HKαα病例,其中HKαα/αα,β^(14-15)/β^(N)有1例;HKαα/αα,β^(-28)/β^(N)有1例;HKαα/αα,β^(βE)/β^(N)有1例;HKαα/αα,β^(41-42)/β^(N)有4例;HKαα/αα,β^(N)/β^(N)有13例;HKαα/--^(SEA),β^(N)/β^(N)有7例;HKαα/α^(WS)α,β^(41-42)/β^(N)有1例;HKαα/α^(CS)α,β^(N)/β^(N)有1例。结论 HKαα地中海贫血的基因诊断可以减少病例的漏诊或误诊,更加精准地为遗传咨询提供指导。

关键词：地中海贫血基因诊断 HKαα

Topology optimization of modular structures with multiple assemblies and applications to airborne shelves

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Chinese Journal of Aeronautics 2024年第4期37卷 321-332页

作者： Jie WANG Tong gao Ming LI Jihong ZHU Longlong SONG weihong ZHANG State IJR Center of Aerospace Design and Additive Manufacturing Northwestern Polytechnical UniversityXi’an 710072China Beijing Specialized Machinery Institute Beijing 100143China

This work is devoted to the aeronautical application of topology optimization for modular structures with multiple assemblies that consist of repeated standard modules and optional reinforcements.These kinds of structures are widely used owing to their transportability,reconfigurability,low manufacturing and service costs.In this work,the design of airborne shelves with modular structures characterized by the standard module configuration is formulated for the first time as a topology optimization problem of multiple assemblies and multiple load cases subjected to the volume constraint.It is shown that the weighted compliance design of multiple assemblies is a compromising solution compared to the optimization result of each individual assembly of standard modules.Meanwhile,the performance of optimized airborne shelves with the modular structures can effectively be ameliorated with the help of reinforcements.

关键词： Topology optimization Modular structures Multiple assemblies Standard modules Airborne shelves

无产阶级文化派的理论旅行——陈望道的波格丹诺夫翻译及其语文理论的实践

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文学评论 2022年第1期 5-14页

作者：高维宏福建师范大学文学院

1928年我国的无产阶级革命从军事、政治斗争转为隐蔽战线、文化战线斗争。彼时苏联则已进入斯大林时期,然而这一期间陈望道并未翻译马列的经典理论,而是选择通过日译本翻译波格丹诺夫的《社会意识学大纲》与《无产阶级文化》杂志,阐述... 详细信息

1928年我国的无产阶级革命从军事、政治斗争转为隐蔽战线、文化战线斗争。彼时苏联则已进入斯大林时期,然而这一期间陈望道并未翻译马列的经典理论,而是选择通过日译本翻译波格丹诺夫的《社会意识学大纲》与《无产阶级文化》杂志,阐述了无产阶级文化派的社会意识论、文化组织论等观点,运用于现实的大江书铺组织工作、大众语运动,并且将之改写,融入其修辞学代表作《修辞学发凡》之内。梳理这段无产阶级文化派理论从苏俄、日本旅行至中国的过程,有助于厘清日后的文艺组织生活的理论源头与改写过程,补充我国社会主义文化理论的实践系谱。

关键词：陈望道波格丹诺夫无产阶级文化派文艺组织生活文化战线

Tetramethylpyrazine and paeoniflorin combination(TMP-PF)inhibits angiogenesis in atherosclerosis via miR-126/VEGF/VEGFR2 signaling pathway

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未来食品学报(英文) 2024年第3期4卷 280-287页

作者： Yahui Yuan Rong Yuan Qiqi Xin Yu Miao Ying Chen Rui gao weihong Cong Laboratory of Cardiovascular Diseases Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing 100091China National Clinical Research Center for Chinese Medicine Cardiology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing 100091China School of Health Economics and Management Nanjing University of Chinese MedicineNanjing 210023China Institution of Clinical Pharmacology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing 100091China Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine National Medical Products AdministrationBeijing 100091China

Angiogenesis in atherosclerosis(AS)promotes plaque destabilization.miR-126 has a significant role in angiogenesis.Tetramethylpyrazine(TMP)and paeoniflorin(PF)have anti-atherosclerotic effects.However,the miR-126-related mechanisms of TMP and PF combination(TMP-PF)on angiogenesis in AS have not been understood.To explore the mechanism of TMP-PF on angiogenesis in AS targeting miR-126.Human umbilical vein endothelial cells(HUVECs)were assigned into the control,model,TMP-PF,TMP-PF+miR-126 inhibitor,and simvastatin groups.HUVECs were transfected with miR-126 inhibitor or negative control,incubated with oxidized low-density lipoprotein(ox-LDL)to establish AS model,and then treated with TMP-PF or simvastatin.Cell proliferation,migration,and tube formation assays are conducted,and the expression of angiogenesis-related factors were detected by enzyme-linked immunosorbent assay(ELISA)and Western blotting.The expression level of miR-126 was confirmed by polymerase chain reaction(PCR).0x-LDL promoted HUVECs proliferation,migration,and tube formation,downregulated miR-126 expression,and increased the expression of VEGF,VEGFR2,bFGF,and FGFR1.TMP-PF inhibited proliferation,migration,and tube formation,upregulated miR-126 expression and decreased the expression of VEGF,VEGFR2,bFGF,and FGFR1 in ox-LDL-induced HUVECs.However,the effects of TMP-PF on angiogenesis and the expression of miR-126,VEGF,VEGFR2,and FGFR1 were abolished by miR-126 inhibitor.TMP-PF suppressed angiogenesis in AS by regulating miR-126/VEGF/VEGFR2 pathway,which might elucidate the underlying mechanism of TMP-PF in alleviating AS.

关键词： Atherosclerosis Angiogenesis Tetramethylpyrazine Paeoniflorin miR-126/VEGF/VEGFR2 signaling pathway