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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

Advances in Graphene‑Based Electrode for Triboelectric Nanogenerator

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Nano-Micro Letters 2025年第1期17卷 378-403页

作者： Bin Xie Yuanhui Guo Yun Chen Hao Zhang Jiawei xiao Maoxiang hou Huilong Liu Li Ma Xin Chen Chingping Wong State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

With the continuous development of wearable electronics,wireless sensor networks and other micro-electronic devices,there is an increasingly urgent need for miniature,flexible and efficient nanopower generation *** nanogenerator(TENG)technology can convert small mechanical energy into electricity,which is expected to address this *** the core component of TENG,the choice of electrode materials significantly affects its *** metal electrode materials often suffer from problems such as durability,which limits the further application of ***,as a novel electrode material,shows excellent prospects for application in TENG owing to its unique structure and excellent electrical *** review systematically summarizes the recent research progress and application prospects of TENGs based on graphene *** precision processing methods of graphene electrodes are introduced,and the applications of graphene electrode-based TENGs in various scenarios as well as the enhancement of graphene electrodes for TENG performance are *** addition,the future development of graphene electrode-based TENGs is also prospectively discussed,aiming to promote the continuous advancement of graphene electrode-based TENGs.

关键词： Triboelectric nanogenerator Precision processing Graphene electrode Self-powered sensor

Anti-cyclic citrullinated peptide antibody predicts the development of rheumatoid arthritis in patients with undifferentiated arthritis

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Chinese Medical Journal 2019年第24期132卷 2899-2904页

作者： Chun Li Yan Zhang Hui Song Jie Gao Dong-Bao Zhao Qi Zhu Dong-Yi He Li Wang Xiang-Pei Li Xu-Dong Liu Wei-Guo xiao Xin-Yu Wu Hua-Xiang Wu Wei Tu Shao-Xian Hu Xin Wang Zhi-Jun Li Zhi-Min Lu Zhan-Yun Da Bo Liang xiao-Min Liu Jin-Wei Zhao Ling Li Feng Han Wu-Fang Qi Wei Wei Xu Ma Zhen-Bin Li Gui-Min Zheng Feng-xiao Zhang Yi Li You-Lian Wang Guang-Hui Ling Jin-Wei Chen xiao-qiang hou Jing Zhang Qing-Ping Chen Chang-Lian Liu Yan Zhang Jia-Shun Zeng Qing-Hua Zou Yong-Fei Fang Yin Su Zhan-Guo Li Department of Rheumatology and Immunology Peking University People's HospitalBeijing 100044China Department of Rheumatology and Immunology Beijing Jishuitan HospitalBeijing 100035China Department of Rheumatology and Immunology Changhai HospitalShanghai 200433China Department of Rheumatology Shanghai Guanghua Hospital of Integrated Traditional Chinese and Western MedicineShanghai 200052China Department of Rheumatology and Immunology Anhui Provincial HospitalHefeiAnhui 230001China Department of Rheumatology and Immunology The First Hospital of China Medical UniversityShenyangLiaoning 110001China Department of Rheumatology The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang 310009China Department of Rheumatology and Immunology Tongji HospitalWuhanHubei 430030China Department of Rheumatology The First Affiliated Hospital of Bengbu Medical CollegeBengbuAnhui 233004China Department of Rheumatology and Immunology Affiliated Hospital of Nantong UniversityNantongJiangsu 226001China Department of Rheumatology and Immunology The Hospital of Shunyi District BeijingBeijing 101300China Department of Infection and Immunology Tianjin Union Medical CenterTianjin 300121China Department of Rheumatology and Immunology Tianjin First Central HospitalTianjin 300192China Department of Rheumatology and Immunology Tianjin Medical University General HospitalTianjin 300052China Department of Rheumatology and Immunology Peace HospitalShijiazhuangHebei 050000China Department of Rheumatology and Immunology Hebei General HospitalShijiazhuangHebei 050051China Department of Rheumatology Jiangxi Provincial People's HospitalNanchangJiangxi 330006China Division of Rheumatology and Immunology The Second Xiangya Hospital of Central South UniversityChangshaHunan 410011China Department of Rheumatology and Immunology The First College of Clinical Medical Science of China Three Gorges University&Yichang Central People's HospitalYichangHubei 443003China Department of Rheu

Background:Clinical outcomes of undifferentiated arthritis(UA)are diverse,and only 40%of patients with UA develop rheumatoid arthritis(RA)after 3 *** predictive markers at disease onset for further intervention is ***,our objective was to analyze the clinical outcomes of UA and ascertain the predictors for RA ***:We performed a prospective,multi-center study from January 2013 to October 2016 among Chinese patients diagnosed with UA in 22 tertiary-care *** and serological parameters were obtained at ***-up was undertaken in all patients every 12 weeks for 2 *** factors of disease progression were identified using multivariate Cox proportional hazards ***:A total of 234 patients were recruited in this study,and 17(7.3%)patients failed to follow up during the *** the 217 patients who completed the study,83(38.2%)patients went into *** patients who developed RA had a higher rheumatoid factor(RF)-positivity(42.9%vs.16.8%,χ^2=8.228,P=0.008),anti-cyclic citrullinated peptide(CCP)antibodypositivity(66.7%vs.10.7%,χ^2=43.897,Phould be tested at disease onset in all patients with UA.

关键词： Anti-cyclic citrullinated peptide antibody Arthritis,Rheumatoid Rheumatoid factor Undifferentiated arthritis

考虑结构—基础—地基共同作用的筏板基础优化设计

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土工基础 2009年第6期23卷 61-64页

作者：王晓强章后甜洛阳理工学院土木工程系河南洛阳471023

利用ANSYS有限元软件,研究筏板基础与结构及地基土相互作用中的工作性状,通过分析基础混凝土强度、筏板厚度等因素对筏板基础的影响,对筏板基础进行了结构设计优化,为筏板基础的设计计算提供依据。

关键词：筏板共同作用有限元优化设计

基于细菌视紫红质薄膜的空间光调制器实验研究

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物理学报 2003年第3期52卷 761-766页

作者：杨文正杨青陈烽冯晓强侯洵中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室西安710068 西安交通大学电子科学与技术系西安710049

阐述了利用细菌视紫红质薄膜 (BR薄膜 )优良的非线性光学特性作为光寻址的空间光调制器的实验研究 .BR有两个重要的光敏中间态 (B态和M态 ) ,其吸收带 (B态吸收峰为 5 70nm ,M态吸收峰为 4 12nm)重叠区域较少 ,利用其正向 (B→M)和逆向... 详细信息

阐述了利用细菌视紫红质薄膜 (BR薄膜 )优良的非线性光学特性作为光寻址的空间光调制器的实验研究 .BR有两个重要的光敏中间态 (B态和M态 ) ,其吸收带 (B态吸收峰为 5 70nm ,M态吸收峰为 4 12nm)重叠区域较少 ,利用其正向 (B→M)和逆向 (M→B)光反应之间转化关系和B态与M态的差异吸收实现了相干光学图像到非相干光学图像的转换实验 .采用经基因改性的细菌视紫红质薄膜 (BRD96N)材料 ,使用 6 70nm相干光作为写入光 ,5 30nm非相干光作为读出光 ,得到了分辨率约为 2 0 0lines mm ,对比度约为 2 .1∶1的实验结果 .

关键词：实验研究光寻址空间光调制器细菌视紫红质薄膜 BR薄膜非线性光学特性相干光非相干光图像相互转换光学图像光学信息处理

Boosting oxygen vacancies by modulating the morphology of Au decorated In_(2)O_(3)with enhanced CO_(2)hydrogenation activity to CH_(3)OH

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Journal of Environmental Sciences 2024年第6期140卷 91-102页

作者： Ruxian hou Jiewen xiao Qian Wu Tianyu Zhang qiang Wang Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China Engineering Research Center for Water Pollution Source Control&Eco-remediation College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China

CO_(2)hydrogenation to methanol has become one of the most promising ways for CO_(2)utilization,however,the CO_(2)conversion rate and methanol selectivity of this reaction still need to be improved for industrial *** we investigated the structure-activity relationship for CO_(2)conversion to methanol of In_(2)O_(3)-based catalysts by modulating morphology and decorating *** different Au/In_(2)O_(3)catalysts were prepared,their activity follow the sequence of Au/In_(2)O_(3)-nanosphere(Au/In_(2)O_(3)-NS)>Au/In_(2)O_(3)-nanoplate(Au/In_(2)O_(3)-NP)>Au/In_(2)O_(3)-hollow microsphere(Au/In_(2)O_(3)-HM).Au/In_(2)O_(3)-NS exhibited the best performance with good CO_(2)conversion of 12.7%,high methanol selectivity of 59.8%,and large space time yield of 0.32 g CH_(3)OH/(hr·gcat)at 300℃.The high performance of Au/In_(2)O_(3)-NS was considered as the presence of *** contributes to the creation of more surface oxygen vacancies,which further promoted the CO_(2)adsorption and facilitated CO_(2)activation to form the formate intermediates towards *** work clearly suggests that the activity of In_(2)O_(3)catalyst can be effective enhanced by structure engineering and Au decorating.

关键词： CO_(2)hydrogenation Methanol Au/In_(2)O_(3) Morphology Oxygen vacancies

Linear Dynamic Viscoelastic Response of Melts for Crosslinkable Polyethylene Insulation Cable Granules During Cross-linking

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Chemical Research in Chinese Universities 2010年第1期26卷 142-147页

作者： YANG Hong-mei YANG Yong-zhu HE xiao ZHENG qiang Zhou hou-qiang Department of Polymer Science and Engineering Key Laboratory of Macromolecular Synthesis and Functionalization Ministry of Education Zhejiang University Hangzhou 310027 P. R. China Ningbo Dongfang Cable Ltd. Ningbo 315040 R R. China

Two commercial crosslinkable polyethylene insulation cable granules, designed for 110 and 35 kV voltage insulation, with similar crosslinking temperature but different melting temperature, were chosen as experimental samples for examining their linear dynamic responses during cross-linking. It has been found that the gel contents of cable compounds for 110 and 35 kV insulation are almost the same after they have been cross-linked at the same temperature, pressure and time. And the sample melts show the similar dependence of the dynamic storage modulus, G; on strain. On the other hand, the dynamic temperature ramp test and the dynamic time sweep test indicate that the samples exhibit different dynamic viscoelastic responses during their crosslinking. An expression for describing their erosslinking process was proposed via probing rheokinetics of crosslinking for the two samples.

关键词： XLPE Insulation cable Crosslinking Rheological behavior

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基于细菌视紫红质光子逻辑门的实验研究

物理学报 2003年第11期52卷 2803-2806页

作者：冯晓强侯洵杨文正杨青陈烽中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室

研究了基于细菌视紫红质 (简称BR或菌紫质 )变种材料D96N的 3种光逻辑操作 .在 6 33nm激发光照射下 ,菌紫质分子会被激发到M态 ,处于M态的菌紫质对 4 12nm的紫光呈较大吸收 ,会抑制同时入射的紫光 .选择合适的紫光强度 ,通过CCD观测被... 详细信息

研究了基于细菌视紫红质 (简称BR或菌紫质 )变种材料D96N的 3种光逻辑操作 .在 6 33nm激发光照射下 ,菌紫质分子会被激发到M态 ,处于M态的菌紫质对 4 12nm的紫光呈较大吸收 ,会抑制同时入射的紫光 .选择合适的紫光强度 ,通过CCD观测被抑制的 4 12nm检测光透射强度分布 ,模拟了“非”、“或非”、“与非”几种基本的光子逻辑操作 .

关键词：细菌视紫红质光子逻辑门互补抑制非线性光学透射强度分布光致变色光学器件

Reversible Chain Transfer Catalyzed Polymerization with Alkyl Iodides Generated from Alkyl Bromides by in Situ Halogen Exchange

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Chinese Journal of Polymer Science 2021年第9期39卷 1161-1168页

作者： Dan-Ni Gao Yu-Lai Zhao Jing-Yu Cai Lin-Xi hou Long-qiang xiao Department of Materials-Oriented Chemical Engineering School of Chemical EngineeringFuzhou UniversityFuzhou 350116China Qingyuan Innovation Laboratory Quanzhou 362801China Fujian Key Laboratory of Advanced Manufacturing Technology of Specialty Chemicals Fuzhou UniversityFuzhou 350116China

Reversible chain transfer catalyzed polymerization(RTCP)is a practical and efficient process for the precise synthesis of polymers with special architecture by using simple phenols(2,4,6-trimethylphenol,TMP)or hydrocarbons(xanthene,XT)as efficient ***,alkyl iodide(R-1),which was gen erated from in situ bromine-iodine transformation of alkyl bromide(R-Br)with sodium iodide(Nal),was served as initiator to mediate RTCP with TMP or *** and other functional methacrylates,including GMA,DEAM,DMAEMA and BzMA,were successfully initiated by combining orga no catalysts and azo in itiators to yield polymers with low-polydispersity(M_(w)/M_(n)=1.1-1.5)and ideal mono mer conversions(50%-90%)at moderate *** over,3-armstar polymers were also obtained by this *** high chain-end fidelity of the obtained poly(methyl methacrylate)with iodine as chain-end group(PMMA-I)was confirmed by chain-extension *** en vironme ntally frie ndly initiators and orga no catalysts exhibit powerful polymerization properties toward RTCP,providing a sign ificant method to synthesize functional polymers.

关键词： Reversible chain transfer catalyzed polymerization Organocatalyst Halogen exchange