检索结果-南通市图书馆

Interfacial reaction between AZ91D magnesium alloy melt and mild steel under high temperature

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Foundry 2024年第2期21卷 159-167页

作者： Jia-hong Dai Jian-yue Zhang Bin Jiang Xiang-jun Xu Zhong-tao Jiang hong-mei xie Qing-shan Yang Guo-qing Zhang College of Materials Science and Engineering Yangtze Normal UniversityChongqing 408100China National Engineering Research Center for Magnesium Alloys College of Materials Science and EngineeringChongqing UniversityChongqing 400044China Chongqing Jiulongyuan High-tech Industry Group Co. Ltd.Chongqing 400080China Loncin Industry Co. Ltd.Chongqing 400080China Department of Materials Science and Engineering The Ohio State UniversityColumbusOH 43210USA Chongqing Key Laboratory of Materials Surface&Interface Science Chongqing University of Arts and SciencesChongqing 402160China School of Metallurgy and Material Engineering Chongqing University of Science and TechnologyChongqing 401331China

The metallurgical quality control of magnesium(Mg)and Mg alloys in melting process is required to ensure a satisfied mechanical and corrosion performance,while the typical used steel crucible introduces impurities and interfacial interaction during melting ***,a systematic study about impurities diffusion and interfacial interaction between molten Mg and steel is *** the present study,the interfacial reaction between molten AZ91D Mg alloy and mild steel during melting process was investigated with the melting temperatures of 700℃,750℃ and 800℃.The results show that Al(Fe,Mn)intermetallic layer is the intermetallic primarily formed at the interfaces of AZ91D melt and mild ***,Al_(8)(Mn,Fe)5is indexed between Al(Fe,Mn)and ***_(3)C appears between the mild steel and Al(Fe,Mn)at 700℃ and 750℃,but absent at 800℃ due to the increased solubility of carbon in Mg *** is found that the growth of the intermetallic layer is controlled by diffusion mechanism,and Al and Mn are the dominant diffusing species in the whole interfacial reaction *** measuring the thickness of different layers,the growth constant was *** increases from 1.89(±0.03)×10^(-12)m^(2)·s^(-1)at 700℃ to 3.05(±0.05)×10^(-12)m^(2)·s^(-1)at 750℃,and 5.18(±0.05)×10^(-12)m^(2)·s^(-1)at 800℃.Meanwhile,the content of Fe is linearly increased in AZ91D with the increase of holding time at 700℃ and 750℃,while it shows a significantly increment after holding for 8 h at 800℃,indicating holding temperature is more crucial to determine the Fe content of AZ91D than holding time.

关键词： AZ91D mild steel interface reaction intermetallic growth kinetics

Fast X-ray imaging beamline at SSRF

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第9期35卷 68-81页

作者： Ke Li hong-Lan xie Ya-Nan Fu Fei-Xiang Wang Guo-Hao Du Jian-Feng ji Biao Deng Ti-Qiao Xiao Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

The fast X-ray imaging beamline(BL16U2)at Shanghai Synchrotron Radiation Facility(SSRF)is a new beamline that provides X-ray micro-imaging capabilities across a wide range of time scales,spanning from 100 ps toμs and *** beamline has been specifically designed to facilitate the investigation of a wide range of rapid phenomena,such as the deformation and failure of materials subjected to intense dynamic *** addition,it enables the study of high-pressure and high-speed fuel spray processes in automotive *** light source of this beamline is a cryogenic permanent magnet undulator(CPMU)that is cooled by liquid *** CPMU can generate X-ray photons within an energy range of 8.7-30 *** beamline offers two modes of operation:monochromatic beam mode with a liquid nitrogen-cooled double-crystal monochromator(DCM)and pink beam mode with the first crystal of the DCM out of the beam *** X-ray imaging methods were implemented in BL16U2:single-pulse ultrafast X-ray imaging,microsecond-resolved X-ray dynamic imaging,millisecond-resolved X-ray dynamic micro-CT,and high-resolution quantitative ***,BL16U2 is equipped with various in situ impact loading systems,such as a split Hopkinson bar system,light gas gun,and fuel spray *** the completion of the final commissioning in 2021 and subsequent trial operations in 2022,the beamline has been officially available to users from 2023.

关键词： Multiple time-scale X ray imaging Single-pulse X ray imaging Dynamic 2D imaging Dynamic micro-CT

Electrochemically recycling degraded superalloy and valorizing CO_(2)in the aff ordable borate-modified molten electrolyte

在线全文

学校读者我要写书评

暂无评论

Tungsten 2024年第2期6卷 382-393页

作者： Xiang Chen Yuan Sun Long Wang Xin Qu Yan Zhao hong-Wei xie Di-Hua Wang Hua-Yi Yin Key Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education School of MetallurgyNortheastern UniversityShenyang 110819China Institute of Metal Research Chinese Academy of ScienceShenyang 110016China School of Resource and Environmental Science Wuhan UniversityWuhan 430072China

Integrating electrochemical reduction of CO_(2)and electrochemical oxidation to recycle degraded superalloys is a promising solution to ease resource scarcity and safeguard environmental ***,we propose an electrochemical technique for the conversion of bulk superalloy scraps and CO_(2)into oxide powder at the anode and solid carbon at the cathode,*** particular,a borax-modifi ed CaCl_(2)-based molten salt electrolyte is used for enhancing the electrochemical oxidation of superalloy *** a temperature of 700℃and a voltage of 2.8 V,90.55 wt.%of alloy scraps were oxidized in a molten CaCl_(2)–NaCl–CaCO_(3)–Na_(2)B_(4)O_(7)with an acid–base ratio(K_(a/b))of *** synergy of Cl−and B_(4)O_(7)2−of electrolyte prevents the passivation of the alloy anode and enables continuous ***,the Ni and Co in the anode products are recovered by sulfation roasting with recovery efficiencies of 85.58%and 95.27%for Ni and Co,***,modulating the alkalinity of the electrolyte for enhancing oxidation/pulverization of alloy scrap anode provides new insight into electrochemically recovering superalloy scraps.

关键词： Superalloy scraps Recycling Molten salt Alkalinity Electrochemical oxidation Cobalt

Impacts of Chinese Translators’Risk Management Ability on Translation Project Outcomes:A Study Based on Structural Equation Model

在线全文

学校读者我要写书评

暂无评论

译苑新谭 2024年第2期5卷 36-47页

作者： xie hong WANG Peng Shandong University Weihai Shaanxi Normal University Xi’an

Translation project outcomes are affected by many ***,this study explored the impact of risk management ability of translators on translation project outcomes in *** the study,we took risk management ability of translators in translation projects as the research objective and collected research data through an online questionnaire to establish a structural equation *** on these data in the model,we analyzed impacts of translators’risk management ability on translation project ***,risks in project planning during translation as well as proofreading and typesetting after translation affect the delivery and remuneration of *** study can help translators correctly recognize and manage the risks in translation practices,increase the success rate of translation projects and further promote the sound development of language services.

关键词： translation risks management translation projects structural equation model language service development

Advance in reversible Zn anodes promoted by 2D materials

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第4期43卷 1350-1369页

作者： Shu-Yuan Lei Jin-Xiu Feng Yu-Chao Chen Dong Zheng Wen-Xian Liu Wen-Hui Shi Fang-Fang Wu xie-hong Cao School of Materials Science and Engineering Zhejiang University of TechnologyHangzhou310014China Center for Membrane Separation and Water Science and Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014China

With the growing energy demand associated with high safety and low-cost requirement,aqueous zinc-ion batteries(AZIBs)have been considered as one of the most promising next-generation ***,some key issues,such as uncontrollable dendrites growth,severe corrosion,hydrogen evolution and side reactions of Zn anodes during charge/discharge process,have hindered its pragmatic ***-dimensional(2D)materials hold advantages of unique physical and chemical properties,large surface areas and abundant active sites,which have been successfully used to overcome the above shortcomings of Zn anodes in recent *** this review,the issues and challenges of Zn anodes are ***,the state-of-the-art progress on Zn anodes modification based on 2D materials such as graphene,2D metal carbides and nitrides(MXenes),2D metal-organic frameworks(MOFs),2D covalent organic frameworks(COFs),2D transition metal compounds and other 2D materials is discussed in ***,the perspectives of employing 2D materials in highly reversible Zn anodes are summarized and discussed.

关键词： 2D materials Aqueous zinc-ion battery Zn anodes Dendrites growth

Quantifying the natural growth rate of hepatocellular carcinoma:A real-world retrospective study in southwestern China

在线全文

学校读者我要写书评

暂无评论

World Journal of Hepatology 2024年第5期16卷 800-808页

作者： Li Tu hong xie Qi Li Ping-Gui Lei Pei-Ling Zhao Fan Yang Chi Gong Yuan-Lin Yao Shi Zhou Department of General Practice The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004Guizhou ProvinceChina Clinical Medicine Soochow UniversitySuzhou 215123Jiangsu ProvinceChina Department of Radiology The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004Guizhou ProvinceChina Department of Clinical Laboratory Center The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004Guizhou ProvinceChina Key Laboratory of Biology and Medical Engineering Guizhou Medical UniversityGuiyang 550025Guizhou ProvinceChina Department of Radiology Yanhe Tujia Autonomous County People's HospitalTongren 565300Guizhou ProvinceChina Department of Radiology The Qiandongnan Miao and Dong Autonomous Prefecture People's HospitalKaili 556000Guizhou ProvinceChina Department of Interventional Radiology The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004Guizhou ProvinceChina

BACKGROUND In recent years,approximately half of the newly diagnosed cases and mortalities attributed to hepatocellular carcinoma(HCC)have been reported in *** the high incidence of HCC,there remains a paucity of data regarding the natural growth pattern and the determination of optimal surveillance intervals specific to the Chinese *** To quantify the natural tumor growth pattern of HCC in regional *** A retrospective analysis was performed on patients from a single institution in Southwest China who had undergone two or more serial dynamic computed tomography or magnetic resonance imaging scans between 2014 and 2020,without having received any anti-cancer *** growth was assessed using tumor volume doubling time(TVDT)and tumor growth rate(TGR),with volumes measured manually by experienced *** univariate linear regression and descriptive analysis were applied to explore associations between growth rates and clinical *** This study identifies the median TVDT for HCC as 163.4 d,interquartile range(IQR)72.1 to 302.3 d,with a daily TGR of 0.42%(IQR 0.206%-0.97%).HCC growth patterns reveal that about one-third of tumors grow indolently with TVDT exceeding 270 d,another one-third of tumors exhibit rapid growth with TVDT under 90 d,and the remaining tumors show intermediate growth rates,with TVDT ranging between 3 to 9 *** The identified TGRs support biannual surveillance and follow-up for HCC patients in certain regions of *** the observed heterogeneity in HCC growth,further investigation is warranted.

关键词： Hepatocellular carcinoma Natural tumor growth pattern Tumor volume doubling time Tumor growth rate Realworld retrospective study

Knocking down AR promotes osteoblasts to recruit prostate cancer cells by altering exosomal circ-DHPS/miR-214-3p/CCL5 pathway

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2024年第2期26卷 195-204页

作者： Zhao Yang Jia-Qi Chen Tian-Jie Liu Yu-Le Chen Zhen-Kun Ma Yi-Zeng Fan Zi-Xi Wang Shan Xu Ke Wang Xin-Yang Wang Lei Li hong-Jun xie Department of Urology The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061China

Tumor-derived exosomes have been shown to play a key role in organ-specific metastasis,and the androgen receptor regulates prostate cancer(PCa)*** is unclear whether the androgen receptor regulates the recruitment of prostate cancer cells to the bone microenvironment,even bone metastases,through ***,we found that exosomes isolated from PCa cells after knocking down androgen receptor(AR)or enzalutamide treatment can facilitate the migration of prostate cancer cells to *** addition,AR silencing or treatment with the AR antagonist enzalutamide may increase the expression of circular RNA-deoxyhypusine synthase(circ-DHPS)in PCa cells,which can be transported to osteoblasts by ***-DHPS acts as a competitive endogenous RNA(ceRNA)against endogenous miR-214-3p to promote C-C chemokine ligand 5(CCL5)levels in *** the level of CCL5 in osteoblasts could recruit more PCa cells into the bone ***,blocking the circ-DHPS/miR-214-3p/CCL5 signal may decrease exosome-mediated migration of prostate cancer cells to osteoblasts.

关键词： androgen receptor circRNA exosome prostate cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

智能可穿戴柔性数据手套传感技术研究进展

指挥与控制学报 2024年第3期10卷 264-275页

作者：张燕谢红上海工程技术大学纺织服装学院上海201600

智能可穿戴领域是一个集多学科多门类的交叉研究领域,智能可穿戴数据手套在监测人体健康、信息传递、通信、虚拟交互等领域具有广阔的应用前景。运用Citespace软件以Wed of Science核心数据库为数据来源,对近5年的相关研究文献进行检索... 详细信息

智能可穿戴领域是一个集多学科多门类的交叉研究领域,智能可穿戴数据手套在监测人体健康、信息传递、通信、虚拟交互等领域具有广阔的应用前景。运用Citespace软件以Wed of Science核心数据库为数据来源,对近5年的相关研究文献进行检索,最终纳入126篇文献进行全文系统分析,从应用于数据手套基于不同工作原理的传感器类型、用于可穿戴传感显示转化的数据处理方法、多功能可穿戴传感手套集成的方法3个方面,对最新研究进行全面梳理总结。讨论了方法和技术的局限性,指出了存在的挑战和机遇。

关键词：柔性传感器数据手套传感技术数据处理集成方式

基于人体臂部的连续动态服装压力预测模型及准确性表征方法

在线全文

学校读者我要写书评

暂无评论

纺织学报 2024年第7期45卷 150-158页

作者：谢红张林蔚沈云萍上海工程技术大学纺织服装学院上海201600

通过建立人体臂部与弹性压力臂套的三维有限元模型,对弹性压力臂套的穿套过程及人体肘关节着装后屈曲的2种工况进行数值模拟,计算得到人体臂部软组织外表面及弹性压力臂套随时间变化的等效应力;基于此数据建立线性回归模型,选取均方根... 详细信息

通过建立人体臂部与弹性压力臂套的三维有限元模型,对弹性压力臂套的穿套过程及人体肘关节着装后屈曲的2种工况进行数值模拟,计算得到人体臂部软组织外表面及弹性压力臂套随时间变化的等效应力;基于此数据建立线性回归模型,选取均方根误差作为线性回归模型表征指标,以用于表征织物基传感器测试的准确性。最后对模型进行应用,在有限元模型中选取臂部肘关节外侧屈曲点处,提取此处随时间变化的应力曲线,基于曲线上的特征点建立线性回归模型;选取2种柔性传感器,将其缝制在与模型屈曲点处同样的位置,测试匀速屈肘时的电信号数据,并通过力电耦合模型将电信号转换为应力值。选取均方根误差(RMSE)作为表征线性回归模型的指标,对2种传感器测试数据进行分析,结果显示其中一款传感器的测试值的回归效果与真实值的差距较小,可以认为此传感器运用于肘部弯曲测试准确度更高,效果更好。

关键词：织物基传感器连续动态压力数值模拟服装压力人体臂部压力臂套