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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 ***(Ti,Hf)2 Ni phase also precipitated,accompanied with the formation of TiB ***,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 *** smaller scale reinforcements distributed in the interior of the network *** two-scale reinforcements showed the uniform distribution at macroscopic level and inhomogeneous distribution at microscopic *** single stage B19?B2 martensitic transformation occurred in the Ti-Ni-Hf *** addition,the martensitic transformation temperatures continuously decreased with the increased TiB2 content owing to the compositional and mechanical *** moderate TiB2 addition not noly enhanced the matrix strength,but also significantly improved 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

Inverted V-shaped evolution of superconducting temperature in SrBC under pressure

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Chinese Physics B 2021年第7期30卷 413-419页

作者： Ru-yi zhao Xun-Wang Yan Miao gao Department of Physics School of Physical Science and TechnologyNingbo UniversityNingbo 315211China College of Physics and Engineering Qufu Normal UniversityQufu 273165China

Based on density functional first-principles calculations and anisotropic Eliashberg equations,we have investigated the electronic structure,lattice dynamics,and phonon-mediated superconductivity in newly synthesized layered compound Sr BC under *** from Li BC and Mg B2,our calculations surprisingly reveal that Sr BC is isotropic in compressibility,due to the accumulation of substantial electrons in the interstitial *** find that the Sr phonons strongly couple with B-2 pz orbital and the interstitial states,giving rise to a two-gap superconductivity in Sr BC,whose transition temperature shows an inverted V-shaped dependence on *** maximal transition temperature is about 22 K at50 *** both sides of 50 GPa,the transition temperature exhibits quasi-linear variation with positive and negative slopes,*** a variation of transition temperature is infrequent among phonon-mediated *** competition between enhanced electron–phonon matrix element and hardened phonons plays an essential role in governing the behavior of the critical temperature.

关键词： SrBC phonon-mediated superconductivity anisotropic Eliashberg theory first-principles calculation maximally localized Wannier functions

Optimization of Thermoelectric Microwave Power Sensors Based on Thin-Membrane Structure

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Chinese Journal of Electronics 2015年第4期24卷 884-888页

作者： WANG Debo gao Bo zhao Jiang ZHANG yi GUO Yanyan Nanjing University of Posts and Telecommunication

In this work, the thermal conduction property of thermoelectric microwave power sensors is researched. The fabrication of the thermoelectric microwave power sensor consists of a front side and a back side processing using Ga As Monolithic microwave integrated circuit(MMIC) process and MEMS technology. An isolation structure on the front side is designed to prevent the thermal conduction from the resistor to the Coplanar waveguide(CPW). A thin-membrane on the back side is designed to prevent the thermal conduction from the resistor to the substrate. For the microwave power sensor without an isolation structure, the sensitivity is about 0.138, 0.136,0.132, 0.115 and 0.111 m V/m W at 8, 9, 10, 11 and 12 GHz,respectively. For the microwave power sensor with an isolation structure, the sensitivity is about 0.142, 0.139, 0.135,0.117 and 0.115 m V/m W at 8, 9, 10, 11 and 12 GHz, respectively. As a result, the higher thermal conduction efficiency and the higher sensitivity are obtained for the optimized thermoelectric microwave power sensors.

关键词： Thermal conduction Power sensor Ga As Monolithic microwave integrated circuit(MMIC) Microelectromechanical systems(MEMS)

Tribological and Corrosion Properties of the CoCrAlYTaSiC-xCNTs Coatings Deposited by Laser Cladding

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Acta Metallurgica Sinica(English Letters) 2024年第4期37卷 726-738页

作者： Hai zhao yi Ding Wei gao Bo Yu Jinghui Li Mingya Zhang School of Material Science and Engineering Anhui University of TechnologyMaanshan243002China Maanshan Iron&Steel Co. LtdMaanshan243000China Applied Technology Research Institute Jiujiang Vocational UniversityJiujiang332000China School of Metallurgical Engineering Anhui University of TechnologyMaanshan243002China

The MCrAlY coating has been potential candidate for the parts applied in friction and corrosion conditions, and CNTs (carbon nanotubes) are expected to improve the service performance of coatings owing to high lubrication and low chemical reactivity. In this work, a systematic investigation on the tribological and corrosion properties of CoCrAlYTaSiC-xCNTs coatings deposited by laser melting was analyzed. Results showed that the coatings had good-quality without typical metallurgical defects. The CNTs addition homogenized and refined the microstructure of coating, and also improved the tribological and corrosion properties. As the CNTs content changed from 0 to 4 wt%, the wear rate of coating decreased from 16.23 × 10^(-3) to 7.58 × 10^(-3) mg m^(−1), the jcorr of coating decreased from 4.13 × 10^(-4) to 1.23 × 10^(-4) A cm^(−2), and the Rct values increased from 12.69 to 25.07 Ω cm2.

关键词： MCrAlY coating Laser melting deposition Friction Electrochemical corrosion

Mn2NiO4 spinel catalyst for high-efficiency selective catalytic reduction of nitrogen oxides with good resistance to H2O and SO2 at low temperature

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Journal of Environmental Sciences 2020年第3期32卷 145-155页

作者： Fengyu gao Xiaolong Tang Honghong yi Shunzheng zhao Wenjuan Zhu yiran Shi School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants University of Science and Technology BeijingBeijing 100083China

Mn-Ni oxides with different compositions were prepared using standard co-precipitation(CP) and urea hydrolysis-precipitation(UH) methods and optimized for the selective catalytic reduction of nitrogen oxides(NOx) by NH3 at low ***((2))Ni(1)Ox-CP and Mn(2)Ni(1)Ox-UH(with Mn:Ni molar ratio of 2:1) catalysts showed almost identical selective catalytic reduction(SCR) catalytic activity,with about 96% NOx conversion at 750 C and-99%in the temperature range from 100 to 250℃.X-ray diffraction(XRD) results showed that Mn(2)Ni(1)Ox-CP and Mn(2)Ni(1)Ox-UH catalysts crystallized in the form of Mn2NiO4 and MnO2-Mn2NiO4 spinel,*** latter gave relatively good selectivity to N2,which might be due to the presence of the MnO2 phase and high metal-O binding energy,resulting in low dehydrogenation *** to the results of various characterization methods,it was found that a high density of surface chemisorbed oxygen species and efficient electron transfer between Mn and Ni in the crystal structure of Mn2NiO4 spinel played important roles in the high-efficiency SCR activity of these ***(2)Ni(1)Ox catalysts presented good resistance to H2O or/and SO2 with stable activity,which benefited from the Mn2NiO4 spinel structure and Eley-Rideal mechanism,with only slight effects from SO2.

关键词： Mn-Ni oxides Spinel structure Low-temperature SCR H2O and SO2 resistance Eley-Rideal mechanism

Ultrasonic constitutive model and its application in ultrasonic vibration-assisted milling Ti3Al intermetallics

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Chinese Journal of Aeronautics 2023年第7期36卷 226-243页

作者： Guofu gao Zongxia FU yi WANG Xianrong PAN Daohui XIANG Bo zhao School of Mechanical and Power Engineering Henan Polytechnic UniversityJiaozuo 454000China

Ultrasonic vibration-assisted technology is widely utilized in the performance research and manufacturing process of metallic materials owing to its advantages of introducing highfrequency acoustic systems. However, the acoustic plasticity constitutive model and potential mechanism, involving Ti3Al intermetallic compounds, have not yet been clarified. Therefore, the Ultrasonic-K-M hybrid acoustic constitutive model of Ti3Al was established by considering the stress superposition, acoustic thermal softening, acoustic softening and acoustic residual hardening effects according to the dislocation density evolution theory and crystal plasticity theory. Meanwhile, the mechanical behavior of ultrasonic vibration-assisted tension(UVAT) and microstructure of ultrasonic vibration-assisted milling(UVAM) for Ti3Al was investigated. Dislocation density to be overcome from initial deformation to failure of Ti3Al was calculated in UVAT and was verified in UVAM. The results indicated that the Ultrasonic-K-M model showed a good agreement with the experimental data. There was an obviously softening phenomenon after introducing the ultrasonic energy field in the Ti3Al whole deformation region, and the degree of softening was positively correlated with amplitude. Furthermore, the maximum reduction ratio in yield strength of Ti3Al was16 % and the maximum reduction value in ultimate tensile strength was 206.91 MPa. The elongation rose first and then fell as amplitude enlarged, but only as the vibration was applied in the whole deformation region, the elongation was always greater than 14.58 %. In addition, The UVAM process significantly reduced the dislocation density increment to be overcome for Ti3Al material removal by 1.37 times, and promoted dislocation motion and cancellation to make twisted dislocations evolve into parallel dislocations. As the amplitude increased to 4 μm, the depth of the disturbed area of the plastic deformation layer increased by a maximum of 2.5 times.

关键词： Dislocation density Plastic deformation layer Ti3Al intermetallic compounds Ultrasonic-K-M hybrid acoustic constitutive model Ultrasonic vibration-assisted technology

豆浆中风味物质形成、与蛋白的互作机制及生物法改善豆浆风味的研究进展

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食品科学 2025年第2期46卷 280-289页

作者：高宇齐宝坤廖一闫世长李杨黄雨洋东北农业大学食品学院黑龙江哈尔滨150030 哈尔滨商业大学食品工程学院黑龙江哈尔滨150028

豆浆作为一种营养丰富的植物基蛋白饮品,在全球范围内受到消费者的喜爱。然而,其特有的不良风味往往影响消费者的接受度,限制了豆浆产品的市场推广。本文探讨豆浆中风味物质的形成机理、这些风味物质与豆浆中的蛋白质之间的相互作用机... 详细信息

豆浆作为一种营养丰富的植物基蛋白饮品,在全球范围内受到消费者的喜爱。然而,其特有的不良风味往往影响消费者的接受度,限制了豆浆产品的市场推广。本文探讨豆浆中风味物质的形成机理、这些风味物质与豆浆中的蛋白质之间的相互作用机制以及通过生物方法改善豆浆风味的研究进展。通过无脂氧合酶大豆品种的开发、酶处理和微生物发酵等生物方法,可以有效地改善豆浆的风味,同时保持其营养价值。最后对未来改善豆浆风味的研究方向做出展望,以期为豆浆及其制品的品质提升和市场推广提供理论依据,为推动我国大豆制品市场的发展做出贡献。

关键词：豆浆风味物质-蛋白质互作生物方法风味改良

Chlorinated Effects of Double-Cable Conjugated Polymers on the Photovoltaic Performance in Single-Component Organic Solar Cells

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Chinese Journal of Polymer Science 2023年第2期41卷 187-193页

作者： Han-yi Bao zhao-Fan Yang Yan-Jiao zhao Xiang gao Xin-Zhu Tong yi-Nuo Wang Feng-Bo Sun Jian-Hong gao Wei-Wei Li Zhi-Tian Liu Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan430205China Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composite Beijing University of Chemical TechnologyBeijing100029China

The recently emerged double-cable conjugated polymers have come into focus due to their significantly improved power conversion efficiencies (PCEs) in single-component organic solar cells (SCOSCs). In this work, the effect of chlorination in double-cable conjugated polymers with linear benzodithiophene backbone and pendant perylene bisimide on the photovoltaic performance in SCOSCs has been studied. After introducing chlorine atoms into conjugated side chains, the highest occupied molecular orbital level of the conjugated polymers is down-shifted, thus resulting in a higher open-circuit voltage. As a result, the chlorinated double-cable conjugated polymer exhibits improved photovoltaic performance from 3.46% to 3.57%.

关键词： Double-cable conjugated polymer Chlorination Single-component organic solar cells

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干细胞抗卵巢颗粒细胞衰老的作用机制及进展

中国组织工程研究 2025年第25期29卷 5414-5421页

作者：林美玉赵玺龙高景赵晶阮光萍解放军联勤保障部队第九二〇医院基础医学实验室云南省昆明市650032 干细胞与免疫细胞生物医药技术国家地方联合工程研究中心云南省昆明市650032 云南省细胞治疗技术转化医学重点实验室云南省昆明市650032

背景:干细胞疗法作为一种新兴的治疗手段,有望改善卵巢环境,延缓卵巢颗粒细胞的衰老,为高龄妊娠女性带来新的希望。目的:综述干细胞抗卵巢颗粒细胞衰老的机制及研究进展。方法:检索中国知网和PubMed数据库中关于干细胞抗卵巢颗粒细胞衰... 详细信息

背景:干细胞疗法作为一种新兴的治疗手段,有望改善卵巢环境,延缓卵巢颗粒细胞的衰老,为高龄妊娠女性带来新的希望。目的:综述干细胞抗卵巢颗粒细胞衰老的机制及研究进展。方法:检索中国知网和PubMed数据库中关于干细胞抗卵巢颗粒细胞衰老的文献,以“干细胞,卵巢颗粒细胞,衰老”为中文检索词,以“stem cells,ovary granulosa cells,aging”为英文检索词,最终纳入67篇文献进行分析。结果与结论:①总结了5种卵巢颗粒细胞衰老的机制:DNA损伤和修复能力下降、氧化应激、线粒体功能受损、炎症反应、激素水平变化;②整理了当前干细胞治疗卵巢颗粒细胞衰老的5种机制:促进增殖和抑制凋亡、分化潜能及再生能力、分泌因子、抗氧化、抗炎症反应和免疫调节;③目前有多种类型的干细胞可通过多种方式协同治疗卵巢颗粒细胞衰老,干细胞疗法在恢复女性生育能力方面具有广阔前景。

关键词：干细胞卵巢颗粒细胞衰老机制氧化应激抑制凋亡细胞因子抗氧化抗炎症反应

Phylogenetic Analysis and Expression Patterns of the MAPK Gene Family in Wheat (Triticum aestivum L.)

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Journal of Integrative Agriculture 2012年第8期11卷 1227-1235页

作者： LIAN Wei-wei TANG yi-miao gao Shi-qing ZHANG zhao zhao Xin zhao Chang-ping Beijing Engineering and Technique Research Center of Hybrid Wheat Beijing Academy of Agricultural and Forestry Sciences Beijing 100097 P.R.China College of Life Science Capital Normal University Beijing 100048 P.R. China

Mitogen activated protein kinases （MAPK） cascades based on protein phosphorylation play an important role in plant growth and development. In this study, we have identified 15 putative members of the wheat MAPK gene （TaMPK） family through an in silico search of wheat expressed sequence tags （EST） databases based on the presence of amino acid sequence of Arabidopsis and rice MAPKs. Phylogenetic analyses of MAPKs from wheat, rice and Arabidopsis genomes have classified them into seven subgroups （A, B, C, D, E, F, and G）. Using the available EST information as a source of expression data, the MAPK family genes from Triticum aestivum were detected in diverse tissues. Further expression analysis of the MAPKs in NCBI EST database revealed that their transcripts were most abundant in callus （20%）, followed by leaf （12%） and inflorescence （12%）. Most MAPK family genes showed some tissue specificity.

关键词： wheat MAPK EST phylogenetic analysis profile