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Martensitic transformation of Ti-18Nb(at.%) alloy with zirconium

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Rare Metals 2012年第3期31卷 227-230页

作者： Ye, Wenjun Mi, Xujun song, xiaoyun State Key Laboratory for Nonferrous Metals and Process General Research Institute for Nonferrous Metals Beijing 100088 China

The addition of 3%～9% Zr on the martensitic transformation of Ti-18Nb(at.%) alloy was investigated. The results of microstructure and X-ray diffraction (XRD) analysis show that the phase constitution of as-quenched Ti-18Nb-9Zr(at.%) alloy consists of the retained matrix and martensite, while that of the other three alloys is single martensite. No trace of athermal phase was found in any of the as-quenched alloys. Unlike the effect of Nb addition on the martensitic transformation start temperature Ms of Ti-18Nb(at.%) alloy, Ms de-creased nonlinearly as increasing the Zr addition from 3% to 9% and Ms decreased much more sharply as increasing the Zr addition. The Ms of as-quenched Ti-18Nb-9Zr alloy was around room temperature. The effect of Zr addition on the phase stabilizing in the Ti-18Nb(at.%) alloy was briefly discussed.

关键词： titanium alloy martensitic transformation alloying effect

Effect of Zr addition on microstructures and mechanical properties of Ni-46Ti-4Al alloy

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Rare Metals 2011年第5期30卷 522-526页

作者： LI Yan YU Kaiyuan song xiaoyun ZHANG Fei School of Materials Science and Engineering Beihang University Beijing 100191 China Key Laboratory of Aerospace Materials and Performance （Ministry of Education of China） Beihang University Beijing 100191 China

The microstructures and mechanical properties of Ni-（46-x）Ti-4Al-xZr （x = 0-8, at.%） alloys have been investigated by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, and mechanical tests. The results show that the Ni-Ti-Al-Zr alloys are composed of TiNi and （Ti, Al） 2 Ni with Zr as a solid solution element in both phases, and the third phase, （Zr, Ti, Al） 2 Ni, appears in Ni-40Ti-4Al-6Zr and Ni-38Ti-4Al-8Zr alloys. The compressive yield strength at room temperature increases with the increase of Zr content due to the solid-solution strengthening of Zr and precipitation strengthening of （Ti, Al, Zr） 2 Ni phase. However, the Ni-42Ti-4Al-4Zr alloy exhibits the maximum compressive yield strength at 873 and 973 K because of the softening of （Zr, Ti, Al） 2 Ni phase in the alloys with more Zr addition. The tensile stress-strain tests and the SEM fracture surface observations show that the brittle to ductile transition temperature of Ni-42Ti-4Al-4Zr alloy is between 873 and 923 K.

关键词： intermetallics zirconium microstructure mechanical properties

Tensile and fracture properties of Ti-62A alloy plate with different microstructures

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Rare Metals 2012年第5期31卷 420-423页

作者： LIU Rui HUI songxiao YE Wenjun YU Yang FU Yanyan song xiaoyun DENG Xiguang State Key Laboratory of Nonferrous Metals & Processes General Research Institute for Nonferrous Metals Beijing 100088 China

Ti-62A alloy plates with three different types of microstructure, fully equiaxed, bimodal, and Widmanstatten, were obtained by various heat treatments to investigate the effects of microstructure on the tensile and fracture properties at room temperature. The results reveal that Widmanstatten microstructure exhibits good damage tolerance behavior considering strength, fracture toughness, and fatigue crack growth behavior, while the bimodal microstructure shows good comprehensive properties considering the plasticity synthetically. Optical microscopy (OM) and scanning electron microscopy (SEM) microstructure analyses on fracture and fatigue crack path demonstrate that the dependence of mechanical properties and fatigue crack growth behavior on microstructural feature are attributed to the α lamellae width and the α colony size. © The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2012.

关键词： Brittleness Damage tolerance Fatigue crack propagation Fatigue of materials Fracture toughness Microstructural evolution Optical microscopy Scanning electron microscopy Tensile properties

Patient-derived bladder cancer organoid model to predict sensitivity and feasibility of tailored precision therapy

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Current Urology 2023年第4期17卷 221-228页

作者： Ying Jiang Xun Sun xiaoyun song Zhen Li Ping Zhang Wen Zhang Dongqi Tang Center for Gene and Immunotherapy The Second Hospital of Shandong UniversityCheeloo College of MedicineJinan250100China Department of Urology Shandong Provincial HospitalShandong UniversityJinanChina

Background:Bladder cancer is a common and highly heterogeneous malignant tumor with a relatively poor ***,personalized treatment strategies for bladder cancer are essential for improving patient *** and methods:We developed an efficient 3-dimensional in vitro organoid culture system for bladder cancer organoids(BCOs),which maintains the homology with the original patient tumors and the heterogeneity between different *** addition,we constructed chimeric antigen receptor(CAR)-T cells targeting B7H3 and evaluated the antitumor function of CAR-T cells by coculturing them with ***:The BCOs closely resembled the characteristics of human tumors and were used to test individual sensitivity to platinum-based drugs and olaparib *** with CAR-T cells demonstrated specific antigen recognition and immune activation,indicating their potential in ***:Our study highlights the potential of BCOs to facilitate the development of personalized medicine for bladder cancer and improve the efficiency of drug discovery for bladder cancer therapy.

关键词： Bladder cancer Chimeric antigen receptor T cells Therapy response prediction B7H3 Organoid

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萨都剌丝绸之路相关题材诗歌创作引论

民族文学研究 2009年第1期27卷 37-42页

作者：宋晓云中国社会科学院文学研究所博士后流动站新疆师范大学人文学院

色目诗人萨都剌是蒙元时期汉语诗歌创作领域一位重要的诗人,他与丝绸之路相关的诗歌作品在内容上主要是以反映上都、大都的自然风光及现实社会生活为主,体式、风格多样,为蒙元时期丝绸之路诗歌的发展作出了重要的贡献。

关键词：萨都剌丝绸之路诗歌创作

Hf对Ni-Ti-Al合金高温变形行为影响

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稀有金属材料与工程 2012年第10期41卷 1735-1740页

作者：宋晓云李岩李树索北京航空航天大学航天材料与服役教育部重点实验室北京100191

采用热模拟实验研究了Ni50Ti46-xAl4Hfx(x=0～6,at%)合金的微观组织特点和高温变形行为。合金由基体相NiTi和第二相Ti2Ni组成。Hf全部溶解在基体相和第二相中,并且促进了第二相的析出,显著提高了合金的高温强度。Ni-Ti-Al-Hf合金在700～... 详细信息

采用热模拟实验研究了Ni50Ti46-xAl4Hfx(x=0～6,at%)合金的微观组织特点和高温变形行为。合金由基体相NiTi和第二相Ti2Ni组成。Hf全部溶解在基体相和第二相中,并且促进了第二相的析出,显著提高了合金的高温强度。Ni-Ti-Al-Hf合金在700～800℃下变形行为的研究表明:合金具有良好的高温压缩性能,流变应力随着应变速率的减小或变形温度的增加而降低,其高温变形行为符合温度补偿幂规律描述。Hf的添加使合金的应力指数(n)和变形激活能(Q)上升,这主要是由于Hf的固溶强化、促进Ti2Ni相析出强化和高温稳定性造成的。

关键词： Ni-Ti-Al合金 Hf 微观组织力学性能高温变形行为

Investigating the Immunogenic Cell Death‑Dependent Subtypes and Prognostic Signature of Triple‑Negative Breast Cancer

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Phenomics 2024年第1期4卷 34-45页

作者： Youyang Shi Yuanyuan Wu Feifei Li Kexin Jiang Xiaofang Fang Yu Wang xiaoyun song Rui Wang Lixin Chen Jinzhou Zheng Chunyu Wu Yuenong Qin Xiaofei Liu Sheng Liu Breast Surgery Longhua HospitalShanghai University of Traditional Chinese MedicineWanping South Road725Shanghai 200033China First Clinical College Shandong University of Traditional Chinese MedicineNo.16369Jingshi RoadLixia DistrictJinan 250011ShandongChina

Recently,immunotherapy has emerged as a promising and efective method for treating triple-negative breast cancer(TNBC).However,challenges still *** cell death(ICD)is considered a prospective treatment and potential combinational treatment strategy as it induces an anti-tumor immune response by presenting the antigenic epitopes of dead ***,the ICD process in TNBC and its impact on disease progression and the response to immunotherapy are not well *** this study,we observed dysregulation of the ICD process and verifed the altered expression of prognostic ICD genes in TNBC through quantitative real-time polymerase chain reaction(qRT-PCR)*** investigate the potential role of the ICD process in TNBC progression,we determined the ICD-dependent subtypes,and two were *** of their distinct tumor immune microenvironment(TIME)and cancer hallmark features revealed that Cluster 1 and 2 corresponded to the immune“cold”and“hot”phenotypes,*** addition,we constructed the prognostic signature ICD score of TNBC patients and demonstrated its clinical independence and *** ICD score could also serve as a potential biomarker for immune checkpoint blockade and may aid in the identifcation of targeted efective agents for individualized clinical strategies.

关键词： Immunogenic cell death Triple-negative breast cancer Tumor immune microenvironment Prognostic signature

宋代行状地位的提升:从哀祭类到传记类的转变

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四川师范大学学报（社会科学版） 2023年第5期50卷 146-153页

作者：宋晓云赵彬新疆师范大学中国语言文学学院

行状的文体观念随着时代的推移而演变。六朝至隋唐五代时期,人们认为它属于哀祭文章,其主要用途是为其他文体提供原始材料,文体地位明显低于传记。宋人则发现行状具有传记的特性,将其从哀祭类划归到传记类,其文体地位得到了提升。文体... 详细信息

行状的文体观念随着时代的推移而演变。六朝至隋唐五代时期,人们认为它属于哀祭文章,其主要用途是为其他文体提供原始材料,文体地位明显低于传记。宋人则发现行状具有传记的特性,将其从哀祭类划归到传记类,其文体地位得到了提升。文体观念的流变受到时代变革的影响,宋代出现史学化的传记观念、以行状修史被广泛接受、宋代史官群体多元化等方面的变化都影响到宋人对行状文体观念的变化。由于宋人将行状划归传记,导致宋代出现了将行状视为私修史书、私家传记,行状书写体例呈现传记化的情形。

关键词：宋代行状文体传记史学私传文章体例

Analysis and Suppression of Beat Phenomenon for Railway Traction Converters and Motors

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中国电机工程学报 2013年第9期33卷 I0008-I0008页

作者： GOU Bin FENG xiaoyun song Wensheng HAN Kun, GE Xinglai Southwest Jiaotong University

交直交传动系统广泛应用于高速铁路牵引领域。由于单相脉冲整流器的工作特性,其输出直流电压含有频率为2倍电网频率的脉动分量。该分量在牵引电机侧会引起拍频现象,尤其当牵引逆变器工作频率接近2倍电网频率时最为严重。首先详细分析了... 详细信息

交直交传动系统广泛应用于高速铁路牵引领域。由于单相脉冲整流器的工作特性,其输出直流电压含有频率为2倍电网频率的脉动分量。该分量在牵引电机侧会引起拍频现象,尤其当牵引逆变器工作频率接近2倍电网频率时最为严重。首先详细分析了直流电压脉动分量的来源和拍频现象产生的本质。然后,在取消LC谐振电路并考虑直流侧脉动电压幅值和相角变化的情况下,研究了一种基于频率补偿的无拍频控制算法,并应用于间接转子磁场定向矢量控制系统。通过在转速环注入脉动分量,补偿牵引逆变器工作频率,抑制牵引电机拍频电流。最后,仿真结果和硬件在回路实验结果验证了该算法的有效性。

关键词：高速铁路牵引变流器电机直流母线电压电气驱动系统电源线转换器