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金属世界 2005年第2期 28-30页

作者：付俊薇樊晨许满林毛天荣陈红卫河北工业职业技术学院石家庄钢铁有限责任公司技术中心

介绍了采用转炉--连轧工艺路线开发20CrMoA抽油杆的工艺过程,关键是控制钢中的夹杂物、控制加热温度和采用孔型剪刃,确保钢材的性能和外形质量满足用户的要求。

关键词：抽油杆开发生产连轧转炉工艺过程工艺路线加热温度外形质量夹杂物控制

冷速对LaFe12.4-xSixCo0.6合金显微组织和相组成影响

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铸造技术 2018年第1期39卷 48-50,62页

作者：尹素花董中奇孟延军付俊薇王杨徐海强河北工业职业技术学院河北石家庄050000 河北科技大学材料科学与工程学院河北石家庄050091

研究了冷速对LaFe_(12.4-x)Si_xCo_(0.6)合金的凝固行为的影响。应用XRD和SEM扫描电镜分析了合金显微组织结构和相组成,并应用包晶凝固理论对此作了进一步的解释。结果表明,冷速和Si含量变化对合金的凝固行为有很大的影响。冷速较低约为... 详细信息

研究了冷速对LaFe_(12.4-x)Si_xCo_(0.6)合金的凝固行为的影响。应用XRD和SEM扫描电镜分析了合金显微组织结构和相组成,并应用包晶凝固理论对此作了进一步的解释。结果表明,冷速和Si含量变化对合金的凝固行为有很大的影响。冷速较低约为60 K/s,x≤1.5时凝固组织以Fe相为主;随冷速增加约为500 K/s,x=1.5时,合金的凝固组织出现1∶13相;随冷速的进一步增加约为1 500 K/s,x=1.0时出现1∶13相,且随x值增加1∶13相含量增加。

关键词：稀土冷速 LaFe12.4-xSiCo0.6合金 XRD SEM

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补气生肌汤促进混合痔术后创面愈合临床研究

山东中医杂志 2015年第6期34卷 422-425页

作者：王明华唐海明陆彩忠傅军伟唐一多上海市浦东新区光明中医医院上海201399

目的 :观察补气生肌汤对混合痔术后创面愈合的影响。方法 :将符合纳入标准的60例混合痔术后患者随机分为治疗组与对照组,治疗组30例予补气生肌汤煎服,对照组30例予康复新液口服。用药后分别观察两组患者在术后3,7,14 d的疼痛、出血、排... 详细信息

目的 :观察补气生肌汤对混合痔术后创面愈合的影响。方法 :将符合纳入标准的60例混合痔术后患者随机分为治疗组与对照组,治疗组30例予补气生肌汤煎服,对照组30例予康复新液口服。用药后分别观察两组患者在术后3,7,14 d的疼痛、出血、排便、水肿等情况,同时观察创面愈合时间及创面愈合率。结果:两组患者治疗后创面均修复,术后疼痛、出血、排便、水肿积分,治疗组均低于对照组;创面愈合率及创面愈合时间治疗组均优于对照组,两组比较差异均有统计学意义(P<0.05)。结论:补气生肌汤对促进混合痔术后创面愈合具有良好疗效。

关键词：混合痔术后创面愈合补气生肌汤

Accuracy improvement of calibration-free laser-induced breakdown spectroscopy

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Plasma Science and Technology 2019年第3期21卷 6-15页

作者： Hongbo fu Zhibo NI Huadong WANG junwei JIA Fengzhong DONG Anhui Provincial Key Laboratory of Photonics Devices and Materials Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Key Laboratory of Environmental Optics & Technology Anhui Institute of Optics and Fine MechanicsChinese Academy of Sciences University of Science and Technology of China

Calibration-free laser-induced breakdown spectroscopy can overcome the matrix effect and the huge application prospects of in situ and on-line measurement, so it has been studied and applied to many analytical samples by numerous researchers since it was first proposed in ***, its accuracy is always lower than other analytical techniques and traditional quantitative analysis methods of laser-induced breakdown spectroscopy. The goal of this paper is to review the improvement of accuracy in the experimental setup and spectral analysis,especially after 2010, but not limited to it. The main contents include the accurate measurement of spectral intensity, the spatial and temporal window of local thermodynamic equilibrium and the accurate calculation of temperature and electron density. Due to the requirement of one or more standard samples, the combination of standard samples and CF-LIBS is discussed as a separate section. Finally, a simple conclusion is offered to relevant researchers who want to use CF-LIBS for quantitative analysis.

关键词： CF-LIBS quantitative analysis accuracy self-absorption local thermodynamic equilibrium

Recent advances in modification strategies of silicon-based lithiumion batteries

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Nano Research 2023年第3期16卷 3781-3803页

作者： Wenlei Wang Yu Wang Lixuan Yuan Chaolin You junwei Wu Lili Liu Jilei Ye Yunling Wu Lijun fu State Key Laboratory of Materials-Oriented Chemical Engineering School of Energy Science and EngineeringNanjing Tech UniversityNanjing 211816China

As potential alternatives to graphite,silicon(Si)and silicon oxides(SiO_(x))received a lot of attention as anode materials for lithiumion batteries owing to their relatively low working potentials,high theoretical specific capacities,and abundant ***,the commercialization of Si-based anodes is greatly hindered by their massive volume expansion,low conductivity,unstable solid electrolyte interface(SEI),and low initial Coulombic efficiency(ICE).Continuous endeavors have been devoted to overcoming these challenges to achieve practical *** review is centered on the major challenges and latest developments in the modification strategies of Si-based anodes,including structure optimization,surface/interface regulation,novel binders,and innovative design of ***,outlooks and perspectives of Si-based anodes for future development are presented.

关键词： lithium-ion batteries silicon silicon oxides modification strategies

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一种新型多幅面广告展示装置研究

南方农机 2021年第14期52卷 128-131页

作者：何靖文胡远忠付俊伟曹泳靖戴永祺黄子鹏广东海洋大学机械与动力工程学院广东湛江524088

广告作为信息传播的主要途径之一,已经是人们生活中不可或缺的一部分。基于此,项目组设计了一种新型的翻面广告牌,共有三面翻面、四面展示,能变换12幅广告画面,结构简单、机械性能较好,外形整洁、美观,整体较小,不占用空间,有较大的实... 详细信息

广告作为信息传播的主要途径之一,已经是人们生活中不可或缺的一部分。基于此,项目组设计了一种新型的翻面广告牌,共有三面翻面、四面展示,能变换12幅广告画面,结构简单、机械性能较好,外形整洁、美观,整体较小,不占用空间,有较大的实用价值与现实意义。该广告牌整体小,主要适用于商业街、公园、广场等人流量大的场所。研究表明:该广告牌的最大优点是充分利用有限的空间,传播足够多的信息,可以在有限的空间上提高广告的冲击力,并且广告运动的形式可提高广告的轰击效应。

关键词：广告牌翻转 PLC 蜗轮蜗杆

Calibration curve and support vector regression methods applied for quantification of cement raw meal using laser-induced breakdown spectroscopy

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Plasma Science and Technology 2019年第3期21卷 23-30页

作者： junwei JIA Hongbo fu Zongyu HOU Huadong WANG Zhibo NI Fengzhong DONG Anhui Provincial Key Laboratory of Photonic Devices and Materials Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences University of Science and Technology of China State Key Lab of Power Systems Department of Thermal Engineering Tsinghua-BP Clean Energy Center Tsinghua University

Laser-induced breakdown spectroscopy(LIBS) is a qualitative and quantitative analytical technique with great potential in the cement industrial analysis. Calibration curve(CC) and support vector regression(SVR) methods coupled with LIBS technology were applied for the quantification of three types of cement raw meal samples to compare their analytical concentration range and the ability to reduce matrix effects, respectively. To reduce the effects of fluctuations of the pulse-to-pulse, the unstable ablation and improve the reproducibility, all of the analysis line intensities were normalized on a per-detector basis. The prediction results of the elements of interest in the three types of samples, Ca, Si, Fe, Al, Mg, Na, K and Ti, were compared with the results of the wet chemical analysis. The average relative error(ARE),relative standard deviation(RSD) and root mean squared error of prediction(RMSEP) were employed to investigate and evaluate the prediction accuracy and stability of the two prediction methods. The maximum average ARE of the CC and SVR methods is 34.62% instead of 6.13%,RSD is 40.89% instead of 7.60% and RMSEP is 1.34% instead of 0.43%. The results show that SVR method can accurately analyze samples within a wider concentration range and reduce the matrix effects, and LIBS coupled with it for a rapid, stable and accurate quantification of different types of cement raw meal samples is promising.

关键词： cement raw meal calibration curves SVR LIBS

Preparation of Lead-free Base Glaze Suitable for Pearlescent Pigments by Low-temperature Solid-phase Reaction with Alkali Waste

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Journal of Wuhan University of Technology(Materials Science) 2022年第6期37卷 1262-1270页

作者： RAO Li HUANG Kang fu Qiong WANG junwei DAI Li ZHAO Na LI Xiangjun HE Yong ZHOU Yi CHEN Yanlin College of Materials and Chemical Engineering Hubei University of TechnologyWuhan 430068China Hubei Provincial Key Laboratory of Green Materials for Light Industry Hubei University of TechnologyWuhan 430068China New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base Hubei University of TechnologyWuhan 430068China Hubei Longzhong Laboratory Xiangyang 441000China

A lead-free base glaze suitable for pearlescent pigments was prepared by a low-temperature solid-phase reaction with alkali *** were performed to evaluate the effects of the sintering conditions and alkali waste composition on the prepared base glaze and pearlescent *** experimental results show that partially replacing SiO_(2) with B_(2)O_(3) effectively reduced the sintering temperature and time to form a glass network,but the network structure becomes disconnected as the B_(2)O_(3) content *** amorphous base glaze was obtained when soda ash was replaced with a small amount of alkali waste,but increasing the addition of NaCl further was adverse to base glaze formation by resulting in crystallization of the base glaze and a decrease in the bridging oxygen *** pearlescent pigment was thermally stable in the glaze at 750℃,while higher temperatures caused the crystalline phase of NaAlSiO_(4) to appear and adhere to the surface of pigment granules,which degraded the pearlescent effect of the glaze.

关键词： pearlescent pigment lead-free base glaze alkali waste low-temperature solid-phase reaction mica titanium

Temperature-driven reversible structural transformation and conductivity switching in ultrathin Cu_(9)S_(5)crystals

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Nano Research 2023年第7期16卷 10515-10521页

作者： Lei Zhang Zeya Li Ying Deng Li Li Zhansheng Gao Jiabiao Chen Zhengyang Zhou junwei Huang Weigao Xu Xuewen fu Hongtao Yuan Feng Luo Jinxiong Wu Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsSmart Sensor Interdisciplinary Science CenterSchool of Materials Science and EngineeringNankai UniversityTianjin 300350China National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Ultrafast Electron Microscopy Laboratory The Ministry of Education(MOE)Key Laboratory of Weak-Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin 300071China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200093China

Two-dimensional(2D)materials with reversible phase transformation are appealing for their rich physics and potential applications in information ***,up to now,reversible phase transitions in 2D materials that can be driven by facile nondestructive methods,such as temperature,are still ***,we introduce ultrathin Cu_(9)S_(5)crystals grown by chemical vapor deposition(CVD)as an exemplary *** the first time,their basic electrical properties were investigated based on Hall measurements,showing a record high hole carrier density of~1022 cm^(-3) among 2D ***,an unusual and repeatable conductivity switching behavior at~250 K were readily observed in a wide thickness range of CVD-grown Cu_(9)S_(5)(down to 2 unit-cells).Confirmed by in-situ selected area electron diffraction,this unusual behavior can be ascribed to the reversible structural phase transition between the room-temperature hexagonalβphase and low-temperatureβ’phase with a *** work provides new insights to understand the physical properties of ultrathin Cu_(9)S_(5)crystals,and brings new blood to the 2D materials family with reversible phase transitions.

关键词： ultrathin Cu_(9)S_(5)crystals ultrahigh carrier density reversible phase transition conductivity switching chemical vapor deposition

单纯性肛瘘患者接受括约肌间瘘管结扎术治疗过程中的临床路径管理研究

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结直肠肛门外科 2017年第4期23卷 481-486页

作者：崔灿王卫民金炜冯卓干丹梁榕钰王云云王恒傅军伟王振宜上海中医药大学附属岳阳中西医结合医院肛肠科上海200437 上海市崇明区第三人民医院普外科上海202153 上海中医药大学附属第七人民医院肛肠科上海200137 浦东新区光明中医医院肛肠科上海201399

目的自行制定括约肌间瘘管结扎术治疗单纯性肛瘘患者的优化临床路径,观察其临床应用效果。方法选择2015年3月至2016年1月上海中医药大学附属岳阳中西医结合医院肛肠科就诊的60例单纯性肛瘘患者为研究对象,随机将患者分为两组,每组均30例... 详细信息

目的自行制定括约肌间瘘管结扎术治疗单纯性肛瘘患者的优化临床路径,观察其临床应用效果。方法选择2015年3月至2016年1月上海中医药大学附属岳阳中西医结合医院肛肠科就诊的60例单纯性肛瘘患者为研究对象,随机将患者分为两组,每组均30例,均接受括约肌间瘘管结扎术治疗。观察组严格按自行制定的临床路径模型流程进行干预,对照组用传统的临床管理方法。对比两组术后创面疼痛程度、创面愈合时间、住院时间、治疗有效率及创面愈合情况、复发情况。结果术后第1 d、3 d、5 d、7 d观察组创面疼痛评分均显著低于对照组,差异均有统计学意义(均P0.01)。结论括约肌间瘘管结扎术治疗单纯性肛瘘的临床路径透明度较高、病人依从性较好、具有规范化的流程,令患者在减轻术后疼痛、促进术后创面愈合及降低住院费用方面获益更多。

关键词：单纯性肛瘘括约肌间瘘管结扎术临床路径