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Effects of the extrusion parameters on microstructure,texture and room temperature mechanical properties of extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang lei xiao Zhiyong Kan Jing guo Qiang Li Wanqi Jie State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China College of Chemistry and Environmental Science Qujing Normal UniversityQujing 655011China

Microstructure,texture,and mechanical properties of the extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy were investigated at different extrusion temperatures(260 and 320℃),extrusion ratios(10:1,15:1,and 30:1),and extrusion speeds(3 and 6 mm/s).The experimental results exhibited that the grain sizes after extrusion were much finer than that of the homogenized alloy,and the second phase showed streamline distribution along the extrusion direction(ED).With extrusion temperature increased from 260 to 320℃,the microstructure,texture,and mechanical properties of alloys changed *** dynamic recrystallization(DRX)degree and grain sizes enhanced as the extrusion ratio increased from 10:1 to 30:1,and the strength gradually decreased but elongation(EL)*** the extrusion speed increased from 3 to 6 mm/s,the grain sizes and DRX degree increased significantly,and the samples presented the typical-rare-earth(RE)*** alloy extruded at 260℃ with extrusion ratio of 10:1 and extrusion speed of 3 mm/s showed the tensile yield strength(TYS)of 213 MPa and EL of 30.6%.After quantitatively analyzing the contribution of strengthening mechanisms,it was found that the grain boundary strengthening and dislocation strengthening played major roles among strengthening *** results provide some guidelines for enlarging the industrial application of extruded Mg-RE alloy.

关键词： Mg-rare earth alloys extrusion temperature extrusion ratio extrusion speed strengthening mechanisms

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Inaccuracy of Self-reported Low Sodium Diet among Chinese: Findings from Baseline Survey for Shandong & Ministry of Health Action on Salt and Hypertension(SMASH) Project

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Biomedical and Environmental Sciences 2015年第2期28卷 161-167页

作者： ZHANG Juan guo xiao lei Dong Chul SEO XU Ai Qiang XUN Peng Cheng MA Ji Xiang SHI xiao Ming Nicole LI YAN Liu Xia LI Yuan LU Zi Long ZHANG Ji Yu TANG Jun Li REN Jie ZHAO Wen Hua LIANG xiao Feng Division of Non-communicable Disease Control and Community Health Chinese Center for Disease Control and Prevention Academy of Preventive Medicine Shandong University Shandong Center for Disease Control and Prevention Ewha Womans University Department of Epidemiology and Biostatistics School of Public Health-Bloomignton Indiana University National Center for Chronic and Non-communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention The George Institute for Global Heath University of Sydney National Institute for Nutrition and Health Chinese Center for Disease Control and Prevention Chinese Center for Disease Control and Prevention

This study was aimed to evaluate the agreement between the self-reported sodium intake level and 24-h urine sodium excretion level in Chinese. The 24-h urine collection was conducted among 2112 adults aged 18-69 years randomly selected in Shandong Province, China. The subjects were asked whether their sodium intake was low, moderate, or high. The weighted kappa statistics was calculated to assess the agreement between 24-h urine sodium excretion level and self-reported sodium intake level. One third of the subjects reported low sodium intake level. About 70% of the subjects had mean 24-h sodium excretion 〉9 g/d, but reported low or moderate sodium intake.

关键词： Ministry of Health Action on Salt and Hypertension Findings from Baseline Survey for Shandong SMASH Project

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Dietary Sodium Intake and Its Impact Factors in Adults of Shandong Province

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Biomedical and Environmental Sciences 2014年第7期27卷 564-566页

作者： LI Jian Hong XU Ai Qiang LU Zi Long YAN Liu Xia guo xiao lei WANG Hui Cheng MA Ji Xiang ZHANG Ji Yu DONG Jing WANG Lin Hong National Center for Chronic and Noncommunicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Shandong Center for Disease Control and Prevention Chinese Center for Disease Control and Prevention

Dietary sodium intake and its impact factors in 2 140 adults aged 18-69 years were analyzed. The mean daily sodium intake was 5 745.0 （5 427.6- 6 062.5） mg per day, which was higher in males than in females （P〈0.01）. After having been adjusted for gender, age and urban/city areas, the mean daily sodium intake was significantly higher in participants with a lower education level, drinkers and smokers than in those with a higher education level, nondrinkers and nonsmokers （P〈O.01）. The dietary sodium intake in adults of Shandong Province is higher than the recommended standards.

关键词： In Dietary Sodium Intake and Its Impact Factors in Adults of Shandong Province than

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从“上升婚”到“同质婚”——以中日跨国婚姻中国女性为视角的分析

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华侨华人历史研究 2023年第4期 12-24页

作者：郭笑蕾首都经济贸易大学劳动经济学院北京100070

通过对跨国婚姻女性的访谈,考察全球化时代中日跨国婚姻的模式及其影响因素。研究发现,多数女性因追求自由的生活方式而发生跨国流动,由于喜爱中国或从事中日贸易而来中国的日本男性增多,这增加了婚姻双方相遇的机会。不同于以往因国家... 详细信息

通过对跨国婚姻女性的访谈,考察全球化时代中日跨国婚姻的模式及其影响因素。研究发现,多数女性因追求自由的生活方式而发生跨国流动,由于喜爱中国或从事中日贸易而来中国的日本男性增多,这增加了婚姻双方相遇的机会。不同于以往因国家之间经济差异、为追求阶层上升而发生的“上升婚”,中国女性在人力资本、社会资本、主体性等因素的影响下,大多选择了学历、阶层类似的“同质婚”。跨国婚姻模式的转变,既有全球化时代世界经济格局变动带来的影响,也有女性在出生国经历的家庭关系以及个人自我主体性带来的影响。任何形式的选择都充满偶然性,跨国婚姻女性拥有越多的“移民特殊资本”,越能应对“同质婚”里的偶然和未知。

关键词：跨国婚姻婚姻模式上升婚同质婚女性移民

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石英晶体微天平在聚合物薄膜研究中的应用与展望

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分析化学 2010年第5期38卷 752-759页

作者：杜滨阳范潇曹峥郭小磊高分子合成与功能构造教育部重点实验室浙江大学高分子科学与工程学系

石英晶体微天平仪(QCM)具有高度的灵敏性,能够对石英晶片表面微痕量物质的变化产生响应,在分析科学研究中广泛应用。本文阐述了QCM的基本工作原理和应用基础方程,并在此基础上综述了近年来QCM在聚合物薄膜研究中的应用及研究进展,包括QC... 详细信息

石英晶体微天平仪(QCM)具有高度的灵敏性,能够对石英晶片表面微痕量物质的变化产生响应,在分析科学研究中广泛应用。本文阐述了QCM的基本工作原理和应用基础方程,并在此基础上综述了近年来QCM在聚合物薄膜研究中的应用及研究进展,包括QCM对聚合物薄膜的厚度和力学性能的测量、QCM研究聚合物分子链在石英晶片表面的吸附过程和链构象变化、表面引发生长聚合物刷的动力学过程、基于功能聚合物薄膜和QCM的生物与化学传感器等,同时对QCM在聚合物薄膜研究领域的进一步深入应用进行了展望。

关键词：聚合物薄膜石英晶体微天平评述

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In vitro chondrogenesis of the goat bone marrow mesenchymal stem cells directed by chondrocytes in monolayer and 3-dimetional indirect co-culture system

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Chinese Medical Journal 2011年第19期124卷 3080-3086页

作者： LI Jian-wei guo xiao-lei HE Chun-la TUO Yong-hua WANG Zhao WEN Jun JIN Dan Department of Traumatology and Orthopedics Nanfang Hospital Southern Medical University Guangzhou Guangdong 510515 China Department of Biostatistics Southern Medical University Guangzhu Gungdong 510515 China

Background Cartilage injury has a very poor capacity for intrinsic regeneration. The cell-based treatment strategy for the cartilage repair using differentiated bone marrow mesenchymal stem cells （BMSCs） is, however, a promising approach to the chondral repair. This study was aimed to explore the chondrogenic potential of the goat BMSCs in the Transwell co-culture system and the poly-laetide-co-glycolide （PLGA） *** The BMSCs were isolated from the goat iliac crest while the chondrocytes were obtained from the goat＇s last costal cartilage. In the Transwell co-culture system, the BMSCs co-cultured with chondrocytes were designed as group A,whereas the goat＇s BMSCs induced with the chondrogenic medium were group B. Both groups A and B were the experimental groups, while group C that only contained BMSCs was the control group. In the PLGA scaffolds co-culture system, BMSCs were seeded into the PLGA scaffolds, which were suspended in the 24-well plate, and the control group was established by presence or absence of chondrocytes at the bottom of the 24-well plate. Toluidine blue staining,Alcian blue staining, collagen Ⅱ immunofluoresence, collagen Ⅱ immunochemical staining, collagen Ⅰ, collagen Ⅱ, COL2a Q-PCR and osteopontin Q-PCR were used to examine the chondrogenic conditions as well as the expressions of chondrogenic and osteogenic *** Cells isolated from the aspirates of the goat bone marrow proliferated rapidly and gained characteristics of stem cells in Passage 4. However, the differentiations of chondrocytes were not apparent in Passage 3. The results from Toluidine blue staining, collagen Ⅱ immunofluoresence and PCR showed the transformation of BMSCs to chondrocytes in the Transwell co-culture system and PLGA scaffolds. Although the cartilage gene expressions were upgraded in both chondrogenesis group and co-culture system, the osteopontin gene expression, which represents osteogenic level, was also *** The Transwell c

关键词： bone marrow mesenchymal stem cells chondrocytes co-culture goat

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论徽州人物木雕《二十四孝》所体现的中国儒家思想

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艺术百家 2006年第1期22卷 149-151页

作者：郭肖蕾广东岭南职业技术学院艺术设计学院广东广州510630

本文将徽州人物木雕置于儒家思想文化背景下予以观照,从徽州人物木雕所表现的内容来分析儒家思想对徽州木雕的深刻影响。

关键词：徽州木雕二十四孝儒家思想

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从徽州人物木雕看儒家思想对民间美术的影响

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电影评介 2008年第22期 77-78页

作者：郭肖蕾东面大学艺术学院

儒家文化是中国传统文化的主干,它源远流长、血脉不断而又博大精深。在儒家思想的发展过程中,由单纯的学术思想转化成意识形态,并经历了世俗化的过程而融入了中国百姓的生活,成为一种生活模式、心理定势和情感取向。作为民间美术的一部... 详细信息

儒家文化是中国传统文化的主干,它源远流长、血脉不断而又博大精深。在儒家思想的发展过程中,由单纯的学术思想转化成意识形态,并经历了世俗化的过程而融入了中国百姓的生活,成为一种生活模式、心理定势和情感取向。作为民间美术的一部分,徽州的木雕自然无法摆脱儒家思想的浸染。徽州人物木雕对儒家思想的某些核心理念采取了重点诠释,反复表现的形式,以实例来印证儒家思想在中国民众心中的流传之广,影响之深。

关键词：徽州人物木雕儒学民间美术

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拟神的俗身:希腊小说中个体的存在形式

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杭州师范大学学报（社会科学版） 2013年第5期35卷 60-67页

作者：郭晓蕾复旦大学中文系

"希腊小说"与史诗和悲剧具有共同的叙事元矛盾:"个体—命运",但其叙事却不具有后两者完整或相对完整的因果形式;小说中个体、主人公"静止/完美"的时间和道德形式,亦与史诗、悲剧中的个体存在形式迥异。从神话、史诗、悲剧至小说,命运的... 详细信息

"希腊小说"与史诗和悲剧具有共同的叙事元矛盾:"个体—命运",但其叙事却不具有后两者完整或相对完整的因果形式;小说中个体、主人公"静止/完美"的时间和道德形式,亦与史诗、悲剧中的个体存在形式迥异。从神话、史诗、悲剧至小说,命运的存在形式,由具象的变为了完全抽象的。"希腊小说"非因果的叙事形式,根自于命运存在形式的彻底抽象化;尽善、且非时间性的小说主人公,是抽象的命运的拟人形式。

关键词：希腊小说史诗悲剧个体命运

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Mechanical properties and microstructures of Mg-6Si alloys fabricated using the tungsten-inert-gas arc additive manufacturing

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China Foundry 2025年

作者： Peng-cheng Zhou guo-qiang You Jin-yu Feng lei Wang xiao Lin Bin Jiang College of Materials Science and Engineering Chongqing University National Engineering Research Center for Magnesium Alloys Chongqing University National Key Laboratory of Advanced Casting Technologies Chongqing University

Si-containing Mg alloys solidified at conventional rates often contain coarse and sharp Mg2Si phases,which can result in inferior material *** this study,Mg-6wt.%Si （Mg-6Si） alloy was prepared by wire arc additive manufacturing （WAAM）,employing the gas tungsten arc welding technique with rapid *** microstructures and mechanical properties of the WAAM alloy were investigated and compared with those of the as-cast samples produced using a metal *** results indicate that the WAAM Mg-6Si is harder and stronger than the as-cast *** microhardness of the WAAM Mg-6Si increases by 36.6%in comparison to that of as-cast Mg-6Si ***,the average tensile strengths at room temperature and 150°C increases by 63.4%and 21.3%,*** refines both the Mg2Si phase and the overall grains,resulting in a homogeneous morphology and improved mechanical *** granular Mg2Si phase,characterized by fine particles with a diffused distribution,shows a significant increase in *** acicular Mg2Si phase is distributed along the grain boundaries,and its concentration significantly *** average grain size of the Mg2Si phase is about 9.20μm,about 5 times *** refinement and distribution of the granular Mg2Si phase,as well as the reduction in the amount of needle-like Mg2Si particles,are the key factors for improving the mechanical properties of WAAM Mg-6Si alloy.

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