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Effect of REs(Y,Nd)addition on high temperature oxidation kinetics,oxide layer characteristic and activation energy of AZ80 alloy

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Journal of Magnesium and Alloys 2020年第4期8卷 1281-1295页

作者： Chunlong Cheng Xiaoqiang Li Qichi Le ruizhen guo Qing Lan Jianzhong Cui Key Laboratory of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819People's Republic of China

The oxidation behaviors of AZ80,AZ8O-0.32 Y and AZ8O-0.38 Nd(wt.%)alloys were researched at 413℃,420℃,427v and 433℃for up to 6 h in air environment via a high precision analytical balance,a laser confocal microscope,differential scanning calorimeter(DSC)analysis,X-ray diffraction(XRD)analysis,scanning electron microscope(SEM)observation,and X-ray photoelectron spectroscopy(XPS)*** results show that the weight gain and oxidation rate of AZ80 are reduced significantly,the initiation form and propagation of cracks in oxide layer are *** and protective oxide layer forms on alloy surface with Y or Nd *** the activation energies of AZ80,AZ80-0.32Y and AZ8O-0.38Nd alloys calculated via Arrhenius equation are 82.556 kJ/mol,177.148kJ/mol and 136.738 kJ/mol,respectively.

关键词： Magnesium Rare-earth Oxidation kinetics Activation energy

Mechanical Properties and Corrosion Behavior of Multi-Microalloying Mg Alloys Prepared by Adding AlCoCrFeNi Alloy

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Acta Metallurgica Sinica(English Letters) 2022年第8期35卷 1301-1316页

作者： Xiong Zhou Qichi Le Chenglu Hu ruizhen guo Tong Wang Chunming Liu Dandan Li Xiaoqiang Li The Key Laboratory of Electromagnetic Processing of Materials Ministryof EducationNortheastern UniversityShenyang 110819China Key Laboratory for Anisotropy and Texture of Materials(MoE) School of Materials Scienceand EngineeringNortheastern UniversityShenyang 110819China

In this work,a series of multi-microalloying Mg alloys with a high degradation rate and high strength was prepared by adding AlCoCrFeNi HEA particles to the Mg melt followed by hot *** microstructure evolution and mechanical properties of the alloys were studied,meanwhile,the corrosion properties were evaluated by immersion weight loss and electrochemical *** indicated that HEA particles in the Mg melt were decomposed and formed the Ni-rich phase,which was distributed uniformly in the Mg *** with the pure Mg matrix,the Mg-3 HEA alloy exhibited excellent mechanical properties of the ultimate tensile strength~237 MPa and tensile yield strength~181 MPa,an increased rate of~49.1 and~96.7%,respectively,without sacrificing the *** the ultimate compressive strength(UCS)and compressive yield strength increased by~31.5 and~43%to 392±3 and 103±2 MPa,*** on theoretical analysis,the high YS of the alloys was mainly attributed to fine-grain strengthening and second phase ***,based on the study of corrosion behavior,it was found that with the increase in HEA particle content,the degradation rate of the composites increased because of the promotion of micro-galvanic corrosion,and the Mg-3 HEA alloy showed a maximum degradation rate of~25.2 mg cmh.

关键词： AlCoCrFeNi HEA Pure Mg Mechanical properties Corrosion behavior

Effects of external field treatment on the electrochemical behaviors and discharge performance of AZ80 anodes for Mg-air batteries

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Journal of Materials Science & Technology 2020年第3期38卷 47-55页

作者： Xingrui Chen Shaochen Ning Qichi Le Henan Wang Qi Zou ruizhen guo Jian Hou Yonghui Jia Andrej Atrens Fuxiao Yu Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China School of Mechanical and Mining Engineering The University of QueenslandSt.LuciaQLD 4072Australia

In this work,the effects of external field treatment on electrochemical behaviors and discharge performance of as-cast Mg-8%Al-0.5%Zn(wt%)anodes for Mg-air batteries are systematically investigated in3.5 wt%Na Cl *** external field treatment particularly the variable-frequency ultrasonic field can dramatically refine theα-Mg grains andμ*** grain size decreases from 1594.8±43μm(untreated billet)to 140.6±15μm after variable-frequency ultrasonic field *** values of open circuit potential,electrochemical activity and corrosion resistance of Mg-8%Al-0.5%Zn anode are improved with external field treatment,which should be attributed to refined grains and dispersiveα*** external field treatment especially the variable-frequency ultrasonic field improves stability and the value of cell voltage,and enhances the discharge performance of the Mg-8%Al-0.5%Zn *** variable-frequency ultrasonic field treated anode has the best discharge capacity and anodic efficiency at current density of 45 m A cm-2,with the values of 1417 m A h g-1 and 63.3%,*** ultrasonic field vibration changes the dissolution behavior ofα-Mg matrix during the discharge process,showing the oriented surface morphologies.

关键词： Mg-air batteries Magnesium alloy Discharge performance Electrochemical behaviors Ultrasonic field Electromagnetic field

顺应论视角下英汉商业新闻中模糊限制语的对比研究

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顺应论视角下英汉商业新闻中模糊限制语的对比研究

作者： guo ruizhen 西安外国语大学

学位级别：硕士

模糊限制语广泛存在于言语交际当中，是模糊语言的典型代表。该术语由G. Lakoff于1972年首次提出。自此以后，模糊限制语引起了语言学家越来越多的关注。例如，Prince et al.(1982)， Hyland (1994)， Channel (2000)，何自然(1985)，... 详细信息

模糊限制语广泛存在于言语交际当中，是模糊语言的典型代表。该术语由G. Lakoff于1972年首次提出。自此以后，模糊限制语引起了语言学家越来越多的关注。例如，Prince et al.(1982)， Hyland (1994)， Channel (2000)，何自然(1985)，伍铁平(1999)等学者从语篇分析，语用功能以及英汉对比分析等方面对模糊限制语进行了研究。新闻，作为大众传媒，在人们的日常生活中起着举足轻重的作用，因此也成为了学者们研究的热点。对于模糊限制语和新闻，虽然学者们从不同的角度进行了大量的研究，但是对于商业新闻中的模糊限制语的研究却较少，而有关英汉商业新闻中模糊限制语的对比研究则更不多见。因此，本文在前人研究的基础上，依照G. Lakoff对模糊限制语的定义，按照Prince等人对模糊限制语的分类标准，在Verschueren顺应论框架下，对英汉商业新闻中的模糊限制语进行了对比研究。具体而言，本文围绕以下四个研究问题展开：(1)英汉商业新闻中主要运用了哪几种模糊限制语？(2)英汉商业新闻中各类模糊限制语的使用情况有何异同？(3)如何运用顺应论来解释英汉商业新闻中出现模糊限制语这一现象？(4)模糊限制语在英汉商业新闻中的语用功能有哪些？为了探讨以上的研究问题，作者自建了两个微型的语料库，分别是英语商业新闻语料库和汉语商业新闻语料库。每个语料库均由30篇新闻组成。所有60篇新闻均选自中国和英语语言国家的权威新闻网站。为增强语料的可比性，本研究选取对同一事件的英汉新闻报道。作者对这两个自建语料库进行了定量、定性及对比性分析。结果表明：（1）在英汉商业新闻中四种模糊限制语都会频繁出现，但是，英汉商业新闻中对于四种模糊限制语使用的偏好有所不同。英语商业新闻中使用最多的是间接缓和语，其次是范围变动语，再次是程度变动语，最后是直接缓和语;而汉语商业新闻中使用最多的是程度变动语，其次是范围变动语，再次是间接缓和语，最后是直接缓和语。（2）在商业新闻中使用模糊限制语是对物理世界，心理世界和社会世界的顺应。（3）在这些顺应的过程中，模糊限制语发挥了重要的语用功能，例如使新闻报道更加准确、客观、有礼貌，同时对新闻报道者还可以起到自我保护的作用等。

关键词：模糊限制语英汉商业新闻顺应论对比研究

GmAP1d regulates flowering time under long-day photoperiods in soybean

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The Crop Journal 2024年第3期12卷 845-855页

作者： Shiyu guo Yanfei Li Hongmei Qiu guoyu Hu Chaosen Zhao ruizhen Wang Hao Zhang Yu Tian Xiaoyu Li Bin Liu Ying-hui Li Li-juan Qiu College of Agriculture Northeast Agricultural UniversityHarbin 150030HeilongjiangChina State Key Laboratory of Crop Gene Resources and Breeding/The National Key Facility for Crop Gene Resources and Genetic Improvement(NFCRI)/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization(MARA) Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Jilin Academy of Agricultural Sciences/National Engineering Research Center for Soybean Changchun 130033JilinChina Crop Research Institute Anhui Academy of Agricultural SciencesHefei 230031AnhuiChina Crops Research Institute of Jiangxi Academy of Agricultural Sciences/Jiangxi Province Key Laboratory of Oilcrops Biology Nanchang 330200JiangxiChina Key Lab of Chinese Medicine Resources Conservation State Administration of Traditional Chinese Medicine of the People’s Republic of ChinaInstitute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100193China

Flowering time is important for adaptation of soybean(Glycine max)to different ***,we conducted a genome-wide association study of flowering time using a panel of 1490 cultivated soybean *** identified three strong signals at the qFT02-2 locus(Chr02:12037319–12238569),which were associated with flowering time in three environments:Gongzhuling,Mengcheng,and *** analyzing linkage disequilibrium,gene expression patterns,gene annotation,and the diversity of variants,we identified an AP1 homolog as the candidate gene for the qFT02-2 locus,which we named *** one nonsynonymous polymorphism existed among 1490 soybean accessions at position Chr02:*** carrying the Chr02:12087053-T allele flowered significantly earlier than those carrying the Chr02:12087053-A ***,we developed a cleaved amplified polymorphic sequence(CAPS)marker for the SNP at Chr02:12087053,which is suitable for marker-assisted breeding of flowering *** of GmAP1d in the‘Williams 82’background by gene editing promoted flowering under long-day conditions,confirming that GmAP1d is the causal gene for *** analysis of the region surrounding GmAP1d revealed that GmAP1d was artificially selected during the genetic improvement of *** stepwise selection,the proportion of modern cultivars carrying the Chr02:12087053-T allele has increased,and this allele has become nearly fixed(95%)in northern *** findings provide a theoretical basis for better understanding the molecular regulatory mechanism of flowering time in soybean and a target gene that can be used for breeding modern soybean cultivars adapted to different latitudes.

关键词： Soybean Flowering time GWAS GmAP1d Long-day conditions

交流磁场对过共晶Al-Fe合金初生相的影响

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金属学报 2019年第11期55卷 1388-1394页

作者：张建锋蓝青郭瑞臻乐启炽东北大学理学院沈阳110819 东北大学材料电磁过程教育部重点实验室沈阳110819

利用XRD和OM研究了交流磁场对过共晶Al-2.55%Fe合金初生相的影响。结果表明:交流磁场不会改变过共晶Al-2.55%Fe合金初生相的类型,有无交流磁场作用下,初生相均为Al3Fe相,但交流磁场能显著改变初生Al3Fe相的分布和形貌。无磁场条件下,初... 详细信息

利用XRD和OM研究了交流磁场对过共晶Al-2.55%Fe合金初生相的影响。结果表明:交流磁场不会改变过共晶Al-2.55%Fe合金初生相的类型,有无交流磁场作用下,初生相均为Al3Fe相,但交流磁场能显著改变初生Al3Fe相的分布和形貌。无磁场条件下,初生Al3Fe相在重力的作用下均匀分布在样品的底部,呈细小颗粒状。而在交流磁场的作用下,除了少部分细小颗粒状的初生Al3Fe相在样品底部呈金字塔状分布外,大部分初生Al3Fe相出现在样品的顶端边沿处,沿径向呈三角形分布。同时,顶部初生Al3Fe的相形貌由原来的细小颗粒状变为大的块状和棒状。随着磁感应强度的增大,交流磁场对初生Al3Fe相分布和形貌的影响增大,顶部初生Al3Fe相的含量增多。交流磁场对过共晶Al-2.55%Fe合金初生相分布和形貌的影响,主要是由交流磁场产生的Lorentz力和磁力共同作用的结果。

关键词：交流磁场过共晶Al-Fe合金凝固组织初生相

基于模型定义的测量规划与质量评定应用框架研究

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航空制造技术 2018年第5期61卷 44-50页

作者：杜福洲郭瑞振北京航空航天大学机械工程与自动化学院北京100191

对零件的三维测量规划技术进行研究,提出了基于多几何特性的测量规划与质量评定框架,并从基于MBD的测量需求表达、测量规划、测量执行与数据预处理、质量综合评定方法等方面进行了研究。最后基于CATIA二次开发平台进行原型系统开发,并... 详细信息

对零件的三维测量规划技术进行研究,提出了基于多几何特性的测量规划与质量评定框架,并从基于MBD的测量需求表达、测量规划、测量执行与数据预处理、质量综合评定方法等方面进行了研究。最后基于CATIA二次开发平台进行原型系统开发,并进行了初步验证。该研究为基于模型的测量规划技术工程化与综合评定提供了技术支撑和方法指导。

关键词：测量规划质量评定 CATIA MBD 数字化检验

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非霍奇金淋巴瘤病毒病因学探讨

贵州医药 2008年第12期32卷 1064-1067页

作者：郭瑞珍遵义医学院珠海校区病理学教研室广东珠海519041

目的探讨EBV、HCV与贵州地区NHL的相关性。方法ISH方法检测180例NHL中EB病毒编码的小核苷酸EBER1/2,采用原位RT-PCR法检测58例NHL中HCVRNA。IHC方法检测EBV潜伏膜蛋白LMP-1。结果EBV感染率为42.8%(77/180),感染率依次为TCL64.8%、NK/T46.2%、BCL9.5%,TCL、NK/T与BCL相比,P<0.005,面中线NHL感染率为72.4%,多形细胞性淋巴瘤感染率为70.1%。HCV感染率为18.97%(11/58),其中BCL占90.9%,消化道发生的BCL占63.6%,滤泡中心细胞来源淋巴瘤占54.5%。结论EBV感染与本地区NHL关系密切,主要感染TCL和NK/T。HCV感染与本地区NHL有相关性,主要感染BCL。两种病毒感染均有部位限制性和类型倾向性。

关键词：病毒病因学 EB病毒丙型肝炎病毒非霍奇金淋巴瘤

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不同亚型T细胞淋巴瘤与EB病毒的关系

临床与实验病理学杂志 2000年第2期16卷 114-116页

作者：郭瑞珍何妙侠遵义医学院病理学教研室遵义563003

目的 :探讨不同组织学类型T细胞淋巴瘤 (TCL)与EBV感染的关系。方法 :对 83例 (6种类型 )TCL进行研究 ,包括低度恶性 30例 (其中小多形 2 1例、小淋巴细胞性 9例 ) ,高度恶性 5 3例 (其中大 /中多形 31例、淋巴母细胞性 9例、间变性大... 详细信息

目的 :探讨不同组织学类型T细胞淋巴瘤 (TCL)与EBV感染的关系。方法 :对 83例 (6种类型 )TCL进行研究 ,包括低度恶性 30例 (其中小多形 2 1例、小淋巴细胞性 9例 ) ,高度恶性 5 3例 (其中大 /中多形 31例、淋巴母细胞性 9例、间变性大细胞性 7例、透明细胞性 6例 )。采用PCR检测EBV特征性的DNA序列 (EBV DNA)和ISH法检测EBV编码的RNA(EBER 1/2 )。结果 :每种类型TCL均有EBV的阳性表达 ,低度恶性组与高度恶性组之间EBER 1/ 2表达率差别有显著性 (P <0 0 5 )。结论 :各种类型TCL的发生发展均与EBV感染有关 ,但高度恶性组EBER 1/ 2的表达比低度恶性组更显著。

关键词：亚型T细胞淋巴瘤 EB病毒聚合麦链反应原位杂交