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A single-molecule multicolor electrochromic device generated through medium engineering

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Light(Science & Applications) 2015年第1期4卷 504-512页

作者： Yu-Mo zhang Xiaojun Wang weiran zhang Wen Li Xiaofeng Fang Bing Yang Minjie Li Sean Xiao-An zhang State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Department of Chemistry and Pharmacy Zhuhai College of Jilin UniversityZhuhai 519041China

Multicolor organic electrochromic materials are important for the generation of full-color ***,achieving multiple colors using a single-molecule material has proved *** this study,a multicolor electrochromic prototype device is generated by integrating medium engineering/in situ‘electro base’/laminated electrode technologies with the simple flying fish-shaped methyl ketone *** multicolor electrochromic(green,blue and magenta)device is durable and has a high coloration efficiency(350 cm^(2) C^(-1)),a fast switching time(50 ms)and superior *** study is a successful attempt to integrate solvatochromism and basochromism in an electronic *** integration not only introduces a new avenue for color tuning,in addition to the structural design of the colorant,but will also inspire further developments in the tuning of many other properties by this medium engineering approach,such as conductance and the redox property,and thereby accelerate versatile applications in data recording,ultrathin flexible displays,and optical communication and sensing.

关键词： electrochromic materials laminated electrodes microenvironment multicolor devices solvatochromic materials

Encapsulating segment-like antimony nanorod in hollow carbon tube as long-lifespan,high-rate anodes for rechargeable K-ion batteries

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Nano Research 2019年第5期12卷 1025-1031页

作者： Wen Luo Feng Li weiran zhang Kang Han Jean-Jacques Gaumet Hans-Eckhardt Schaefer Liqiang Mai Department of Physics School of ScienceWuhan University of TechnologyWuhan 430070China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230000China Division of Materials Science and Engineering Boston UniversityMA 02215USA State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Technology Wuhan University of TechnologyWuhan 430070China Laboratoire de Chimie et Physique: Approche Multi-echelles des Milieux Complexes Institut Jean BarriolUniversite de LorraineMetz 57070France Institute for Functional Matter and Quantum Technologies Stuttgart UniversityPfaffenwaldring 57Stuttgart 70569Germany

K-ion battery (KIB) is a new-type energy storage device that possesses potential advantages of low-cost and abundant resource of *** develop advanced electrode materials for accommodating the large size and high activity of potassium ion is of great ***,a segment-like antimony (Sb) nanorod encapsulated in hollow carbon tube electrode material (Sb@HCT) was *** from the virtue of abundant nitrogen doping in carbon tube,one-dimensional and hollow structure advantages,Sb@HCT exhibits excellent potassium storage properties:in the case of potassium bis(fluorosulfonyl)imide (KFSI) electrolyte,Sb@HCT displays a reversible capacity of up to 453.4 mAh·g^-1 at a current density of 0.5 A·g^-1 and good rate performance (a capacity of 211.5 mAh·g^-1 could be achieved at an ultrahigh rate of 5 A·g^-1).Additionally,Sb@HCT demonstrates excellent long-cycle stability at a current density of 2 A·g^-1 over 120 ***,electrolyte optimization is an effective strategy for greatly improving electrochemical *** ex-situ characterizations,we disclosed the potassiation of Sb anode is quite reversible and undergoes multistep processes,combining solid solution reaction and two-phase reaction.

关键词： K-ion battery antimony anode hollow carbon tube encapsulation electrolyte optimizati on potassium storage mechanism

Autophagy inhibition enhances apigenin-induced apoptosis in human breast cancer cells

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Chinese Journal of Cancer Research 2013年第2期25卷 212-222页

作者： Xuchen Cao Bowen Liu Wenfeng Cao weiran zhang Fei zhang Hongmeng Zhao Ran Meng Lin zhang Ruifang Niu Xishan Hao Bin zhang National Key Laboratory of Breast Cancer Prevention and Treatment Tianjin Medical University Department of Breast Cancer Surgery of the Cancer Hospital Tianjin Medical University Department of Pathology of the Cancer Institute Tianjin Medical University Tianjin Key Laboratory of Cancer Prevention and Treatment Tianjin Medical University

Apigenin （4＇,5,7-trihydroxyflavone） is a member of the flavone subclass of flavonoids present in fruits and vegetables. The involvement of autophagy in the apigenin-induced apoptotic death of human breast cancer cells was investigated. Cell proliferation and viability were assessed by 3-（4,5-dimethylthiazol- 2-yl）-2,5-diphenyltetrazolium bromide （MTT） and clonogenic assays. Flow cytometry, fluorescent staining and Western blot analysis were employed to detect apoptosis and autophagy, and the role of autophagy was assessed using autophagy inhibitors. Apigenin dose- and time-dependently repressed the proliferation and clonogenic survival of the human breast cancer T47D and MDA-MB-231 cell lines. The death of T47D and MDA-MB-231 cells was due to apoptosis associated with increased levels of Caspase3, PARP cleavage and Bax/Bcl-2 ratios. The results from flow cytometry and fluorescent staining also verified the occurrence of apoptosis. In addition, the apigenin-treated cells exhibited autophagy, as characterized by the appearance of autophagosomes under fluorescence microscopy and the accumulation of acidic vesicular organelles （AVOs） by flow cytometry. Furthermore, the results of the Western blot analysis revealed that the level of LC3-Ⅱ, the processed form of LC3-Ⅰ, was increased. Treatment with the autophagy inhibitor, 3-methyladenine （3-MA）, significantly enhanced the apoptosis induced by apigenin, which was accompanied by an increase in the level of PARP cleavage. Similar results were also confirmed by flow cytometry and fluorescence microscopy. These results indicate that apigenin has apoptosis- and autophagy-inducing effects in breast cancer cells. Autophagy plays a cyto-protective role in apigenin-induced apoptosis, and the combination of apigenin and an autophagy inhibitor may be a promising strategy for breast cancer control.

关键词： Apoptosis autophagy apigenin breast cancer 3-methyladenine

Effect of ambient pressures on laser-induced breakdown spectroscopy signals

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Frontiers of physics 2024年第4期19卷 243-256页

作者： Kaifan zhang weiran Song Zongyu Hou Zhe Wang State Key Laboratory of Power System Operation and Control Tsinghua-Rio Tinto Joint Research Centre for ResourcesEnergy and Sustainable DevelopmentInternational Joint Laboratory on Low Carbon Clean Energy InnovationInstitute for Carbon NeutralityDepartment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Shanxi Research Institute for Clean Energy Tsinghua UniversityTaiyuan 030032China

Laser-induced breakdown spectroscopy(LIBS)is regarded as the future superstar for analytical chemistry and widely applied in various *** the quality of LIBS signal is fundamental to achieving accurate quantification and large-scale commercialization of *** propose control methods that improve LIBS signal quality,it is essential to have a comprehensive understanding of the influence of key parameters,such as ambient gas pressure,temperature,and sample temperature on LIBS *** date,extensive research has been carried ***,different researchers often yield significantly different experimental results for LIBS,preventing the formation of consistent *** greatly prevents the understanding of influencing laws of key parameters and the improvement of LIBS quantitative *** ambient gas pressure as an example,this paper compares the effects of ambient gas pressure under different optimization conditions,reveals the influence of spatiotemporal window caused by inherent characteristics of LIBS signal sources,i.e.,intense temporal changes and spatial non-uniformity of laser-induced plasmas,on the impact patterns of key *** the perspective of plasma spatiotemporal evolution,the paper elucidates the influence patterns of ambient gas pressure on LIBS signals,clarifying seemingly contradictory research results in the literature.

关键词： laser-induced breakdown spectroscopy spatiotemporal window pressure condition signal uncertainty plasma modulation

基于配位交联的自愈合丁腈橡胶硫化胶的结构与性能

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特种橡胶制品 2024年第4期45卷 7-11页

作者：高原褚建强张卫然王兆波青岛科技大学材料科学与工程学院山东青岛266042

以无水硫酸铜(CuSO_(4))为配位交联剂,与丁腈橡胶(NBR)混炼后制备了一种具有自愈合性能的配位交联NBR硫化胶,研究了其硫化特性、交联密度、力学性能和自愈合行为。结果表明,热压后NBR硫化胶内形成了配位交联网络;当CuSO_(4)用量为20份时... 详细信息

以无水硫酸铜(CuSO_(4))为配位交联剂,与丁腈橡胶(NBR)混炼后制备了一种具有自愈合性能的配位交联NBR硫化胶,研究了其硫化特性、交联密度、力学性能和自愈合行为。结果表明,热压后NBR硫化胶内形成了配位交联网络;当CuSO_(4)用量为20份时,硫化胶的交联密度、拉伸强度、撕裂强度和Shore A硬度最高;系列NBR硫化胶均表现出良好的自愈合性能,且随着愈合温度和愈合时间的增加,硫化胶的愈合强度和愈合效率显著提高;CuSO_(4)用量为20份的硫化胶在180℃愈合60 min时的愈合效率最高可达到98%。

关键词：丁腈橡胶配位交联自愈合硫酸铜

20世纪80年代以来我国侨乡建筑的研究进展——基于文献计量分析

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福建理工大学学报 2024年第2期22卷 156-162页

作者：曾献君张蔚然彭冲黄莉芸张秋仪王坤福建理工大学建筑与城乡规划学院福建福州350118 华南理工大学建筑学院广东广州510641 华南理工大学亚热带建筑与城市科学全国重点实验室广东广州510641

侨乡建筑是特定历史时期的产物,是侨乡地区本土文化与外来文化融合交流的展示。采用CiteSpace和VOSviewer软件对1987-2022年CNKI数据库中检索到的侨乡建筑相关文献进行可视化分析。研究发现:该领域发文总量相对较少,呈波动上升趋势;作... 详细信息

侨乡建筑是特定历史时期的产物,是侨乡地区本土文化与外来文化融合交流的展示。采用CiteSpace和VOSviewer软件对1987-2022年CNKI数据库中检索到的侨乡建筑相关文献进行可视化分析。研究发现:该领域发文总量相对较少,呈波动上升趋势;作者及机构之间合作关系较为弱,具有显著的地域性;研究话题主要分为区域分布与建筑类别、历史建筑保护与开发、建筑风格与文化特征、建筑装饰技艺、侨乡建筑聚落等五类;研究阶段划分为萌芽、起步、拓展三个阶段。未来研究应关注以下四个方面:侨乡建筑的历史文化理论、华侨海外聚居地与原乡的联动性研究、侨乡建筑认定及价值评估方法、侨乡建筑设计理念的传承与创新。

关键词：侨乡建筑 Citespace VOSviewer 可视化图谱研究进展

创新全过程视角下产学研创新团队潜在合作对象识别方法研究

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情报工程 2024年第3期10卷 28-48页

作者：张伟然王超许海云武华维李欣齐鲁工业大学(山东省科学院)科技发展战略研究所济南250000 山东理工大学管理学院淄博255000 西北师范大学档案馆兰州730070

[目的/意义]识别领域不同创新环节中的潜在合作对象,形成贯穿基础研究、应用研究与产业应用的多环节与多主体的产学研创新协同团队,助力科技创新及成果转移转化。[方法/过程]基于创新全过程视角,从产业机构出发,构建产业—技术—科学机... 详细信息

[目的/意义]识别领域不同创新环节中的潜在合作对象,形成贯穿基础研究、应用研究与产业应用的多环节与多主体的产学研创新协同团队,助力科技创新及成果转移转化。[方法/过程]基于创新全过程视角,从产业机构出发,构建产业—技术—科学机构的多层网络分析模型,识别不同创新层中产学研机构的潜在合作对象。以中国干细胞研究领域为对象进行实证研究,验证了方法的可行性与有效性。[结果/结论]创新全过程视角下潜在合作对象识别方法突破了单一视角识别合作对象的局限性,实现了不同创新环节间创新主体潜在合作对象的识别,为创新生态下各主体识别与自身需求更匹配的合作伙伴提供了理论支撑与实践启示。

关键词：合作对象创新过程创新生态系统多层网络产学研

CMPAS融合产品在陕西短时强降水监测中的适用性评估

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干旱气象 2024年第2期42卷 263-273页

作者：刘菊菊赵强井宇张蔚然戴昌明陕西省气象台陕西西安710014 陕西省气象局秦岭和黄土高原生态环境气象重点实验室陕西西安710016

使用2016—2021年陕西省降水数据以及2018—2021年中国区域融合降水分析系统(CMA Multi-source Precipitation Analysis System,CMPAS-V2.1)的二源和三源融合降水分析实时产品,分析陕西省近6 a短时强降水的时空特征,并通过统计检验方法... 详细信息

使用2016—2021年陕西省降水数据以及2018—2021年中国区域融合降水分析系统(CMA Multi-source Precipitation Analysis System,CMPAS-V2.1)的二源和三源融合降水分析实时产品,分析陕西省近6 a短时强降水的时空特征,并通过统计检验方法评估融合降水产品的准确性,为融合产品在短时强降水过程中的订正提供参考依据。结果表明:(1)陕西省短时强降水的最高频次出现在19:00(北京时,下同),强降水主要集中在16:00至次日02:00,且更多发生在6—8月。强降水极值在17:00至次日01:00和04:00—07:00相对较大。陕南地区短时强降水频次明显高于关中和陕北地区;陕北北部、关中东部以及陕南中东部的强降水极值相对更大。(2)两类降水产品的降水量均偏小。三源产品的平均绝对误差在陕北南部、关中大部和陕南南部地区较小,而其余地区二源产品较优。平均绝对误差随着降水量的增加而增大,对于20~50 mm的短时强降水,三源产品更为可靠,而对于50 mm以上的强降水,二源产品表现更佳。(3)两类产品平均绝对误差在13:00—19:00、23:00至次日01:00和04:00—06:00较大,在08:00—12:00、20:00—22:00和02:00—03:00较小,5—8月三源产品表现优于二源产品,而在9—10月二源产品较为可信。(4)降水量阈值降低时融合产品的准确性增加。三源融合产品在性能上优于二源;9—10月两类融合产品的降水量均优于5—8月。

关键词：融合产品短时强降水评估陕西

High-precision X-ray characterization for basic materials in modern high-end integrated circuit

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Journal of Semiconductors 2024年第7期45卷 12-24页

作者： weiran Zhao Qiuqi Mo Li Zheng Zhongliang Li Xiaowei zhang Yuehui Yu National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of ScienceBeijing 100049China

Semiconductor materials exemplify humanity's unwavering pursuit of enhanced performance,efficiency,and functionality in electronic *** its early iterations to the advanced variants of today,this field has undergone an extraordinary *** the reliability requirements of integrated circuits continue to increase,the industry is placing greater emphasis on the crystal ***,conducting a range of characterization tests on the crystals has become *** paper will examine the correlation between crystal quality,device performance,and production yield,emphasizing the significance of crystal characterization tests and the important role of high-precision synchrotron radiation X-ray topography characterization in semiconductor ***,we will cover the specific applications of synchrotron radiation characterization in the development of semiconductor materials.

关键词： X-ray topography synchrotron radiation semiconductor materials crystal defects

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