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PbCrO_4 yellow-pigment nanorods: An efficient and stable visible-light-active photocatalyst for O_2.evolution and photodegradation

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Science china Materials 2018年第8期61卷 1033-1039页

作者： Guo-Qiang zhang Guoshuai liu Yangsen Xu Jianhua Yang Ying li Xiaojuan Sun {2. Chen Chen-liang Su SZU-NUS Collaborative Innovation Center for Optoelectronic Science ＆ Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationCollege of Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090Chin College of Physical Science and Technology Central China Normal UniversityWuhan 430079China State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChangchun 130033Chin Department of Chemistry National University of SingaporeSingapore 117543Singapore

Here, PbCrO4 nanorods, a commonly used and low-cost yellow pigment, was synthesized via a simple pre-cipitation reaction and can serve as a highly efficient oxygen production and photodegradation photocatalyst. The obtained PbCrO4 nanorods exhibit excellent stability and pho-tocatalytic performance for O2.evolution from water. The production rate is approximately 314.0μmol h^-1 g^-1 under visible light, and the quantum efficiency is approximately 2.16% at 42.±10 nm and 0.05% at 600±10 nm. In addition, the PhCrO4 shows good degradation performance for methylene blue, methyl blue, methyl orange and phenol under visible-light irradiation. These results indicate that it is potential to fabricate an effective, robust PbCrO4 photocatalyst by trans-forming heavy-metal pollutants Pb（II） and Cr（VI） into a highly efficient O2.evolution and photodegradation material. This strategy which uses pollutant to produce clean energy and degrade contaminants is completely green and environmentally benign, and thus could be a promising way for practical environmental applications. Keywords： 02.evolution, pollutant, PbCrO4 nanorods, visible-light-active, photocatalyst

关键词： O2.evolution pollutant PbCrO4 nanorods visible-light-active photocatalyst

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Mixed-cation perovskite solar cells in space

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Science china(Physics,mechanics & Astronomy) 2019年第7期62卷 6-9页

作者： YongGuang Tu GuoNing Xu xiaoyu Yang YiFei zhang ZhaoJie li Rui Su DeYing Luo WenQiang Yang Ying Miao Rong Cai LuHua Jiang Xiao{2. Du YanChu Yang QianShi liu Yang Gao Shuai Zhao {2. Huang QiHuang Gong Rui Zhu State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Department of Physics Peking University Academy of Opto-Electronics Chinese Academy of Sciences Collaborative Innovation Center of Quantum Matter Key Laboratory of Flexible Electronics & institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Shaanxi institute of Flexible Electronics Northwestern Polytechnical University Collaborative Innovation Center of Extreme Optics Shanxi University

The metal halide perovskite materials demonstrate outstanding performance in photovoltaics because of their excellent optoelectronic properties (1-7)The perovskite solar cells (PSCs) exhibiting outstanding efficiency [8,9], high power-per-weight [10], and excellent radiation resistance[11-13] are considered to be promising for developing the new-generation energy technology for space application.

关键词： Mixed-cation perovskite solar cells in space Figure PCE FTO

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β-decay study of neutron-rich nucleus ^(34)Al

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Science china(Physics,mechanics & Astronomy) 2017年第4期60卷 69-73页

作者： Rui Han XiangQing li weiGuang Jiang ZhiHuan li Hui Hua ShuangQuan zhang CenXi Yuan DongXing Jiang Yanlin Ye Jing li ZongHao li FuRong Xu QiBo Chen Jie Meng JianSong Wang Chuan Xu Ye{2. Sun ChunGuang Wang HongYi Wu ChenYang Niu ChenGuang li Chao He wei Jiang PengJie li Hongliang Zang Jun Feng SiDong Chen Qiang liu XiaoChi Chen HuShan Xu ZhengGuo Hu YanYun Yang Peng Ma JunBing Ma ShiLun Jin Zhen Bai MeiRong Huang Yuan Jie Zhou weiHu Ma Yong li XiaoHong Zhou YuHu zhang GuoQing Xiao WenLong Zhan School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Sino-French institute of Nuclear Engineering and Technology Sun Yat-Sen University institute of Modern Physics Chinese Academy of Sciences

The ＂island of inversion＂ has been known for over a quar- ter century, since Warburton et al. [1] proposed that nuclei with intruder ground states would constitute a 3x3 square with Z=10-12. N=2.-2. in 1990. Uncovering the underlying inversion mechanism and exploring the scope of the island have attracted significant theoretical and experimental efforts in the following years. Now it is well known that the reduction of N=2. shell gap, which is likely caused by the strong nucleon-nucleon tensor interaction [2.5], allows the intrusion of neutron orbits from the pf shell into the sd shell and results in the inversion of the 2.-2. intruder and 0p-0h normal con- figurations of the nuclear ground states in this region. Mean- while, the original border of the ＂island of inversion＂ has been extended greatly [6-14].

关键词： Al decay study of neutron-rich nucleus

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点缺陷调控:宽禁带Ⅱ族氧化物半导体的机遇与挑战

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物理学报 2019年第16期68卷 70-84页

作者：谢修华李炳辉张振中刘雷刘可为单崇新申德振中国科学院长春光学精密机械与物理研究所发光学及应用国家重点实验室长春130033 郑州大学物理工程学院郑州450001

宽禁带Ⅱ族氧化物半导体材料体系,包括氧化铍(BeO)、氧化镁(MgO)、氧化锌(ZnO)及合金,拥有较大的激子结合能(ZnO 60 meV, MgO 80 meV),较高的光学增益(ZnO 300 cm-1)以及较宽的可调带隙(ZnO3.37 eV, MgO 7.8 eV, BeO 10.6 eV),具有实现... 详细信息

宽禁带Ⅱ族氧化物半导体材料体系,包括氧化铍(BeO)、氧化镁(MgO)、氧化锌(ZnO)及合金,拥有较大的激子结合能(ZnO 60 meV, MgO 80 meV),较高的光学增益(ZnO 300 cm-1)以及较宽的可调带隙(ZnO3.37 eV, MgO 7.8 eV, BeO 10.6 eV),具有实现紫外及深紫外波段低阈值激光器的独特优势,同时也是取代传统气体放电灯(汞灯、氘灯、准分子灯、氙灯)成为深紫外乃至真空紫外光源的重要候选材料之一.虽然经过2.余年的研究历程, ZnO基pn同质结近紫外电致发光方向取得了长足进步,但是,随着带隙的展宽,伴随而来的受主(施主)离化能变高(百毫电子伏特量级),使得室温等效热能(2. meV)无法实现对杂质能级上的空穴(电子)有效离化;此外,掺杂过程中存在的自补偿效应也进一步弱化了载流子的产率,以上因素已经成为了阻碍宽禁带Ⅱ族氧化物半导体实现紫外激光器件及向更短波长扩展的瓶颈性问题,同时也是其他宽禁带半导体材料共同面对的难题.对材料电学及发光性能的调控往往取决于对关键缺陷态的识别与控制,丰富的点缺陷及其组合类型,使宽禁带Ⅱ族氧化物半导体成为研究缺陷物理的重要平台.针对特定点缺陷的识别及表征将有望发现并进一步构建能级较浅的缺陷态,为电学性能调控提供基础.本文从高质量外延生长、杂质与点缺陷、p型掺杂及紫外电致发光三个方面阐述Ⅱ族氧化物半导体近期研究结果,通过对相关研究工作的概览,阐明该体系作为深紫外光源材料的独特优势的同时,指明未来针对电学性能调控的关键在于对点缺陷的调控.

关键词：宽禁带点缺陷掺杂离化能

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Wide-field auroral imager onboard the Fengyun satellite

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light(Science & Applications) 2019年第1期8卷 776-787页

作者： Xiao-Xin zhang Bo Chen Fei He Ke-Fei Song ling-Ping He Shi-Jie liu Quan-Feng Guo Jia-{2. li Xiao-Dong Wang Hong-Ji zhang Hai-Feng Wang Zhen-{2. Han liang Sun Pei-Jie zhang Shuang Dai Guang-Xing Ding li-Heng Chen Zhong-Su Wang Guang-{2. Shi Xin zhang Chao Yu Zhong-Dong Yang Peng zhang Jin-Song Wang National Satellite Meteorological Center China Meteorological AdministrationBeijingChina Key Laboratory of Space Weather National Center for Space WeatherChina Meteorological AdministrationBeijingChina Changchun institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina State Key Laboratory of Applied Optics Chinese Academy of SciencesChangchunChina Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijingChina Institutions of Earth Science Chinese Academy of SciencesBeijingChina

The newly launched Fengyun-3D(FY-3D)satellite carried a wide-field auroral imager(WAI)that was developed by Changchun institute of Optics,Fine mechanics and Physics,Chinese Academy of Sciences(CIOMP),which will provide a large field of view(FOV),high spatial resolution,and broadband ultraviolet images of the aurora and the ionosphere by imaging the N2.LBH bands of *** WAI consists of two identical cameras,each with an FOV of 68°in the along-track direction and 10°in the cross-track *** two cameras are tilted relative to each other to cover a fan-shaped field of size 130°×10°.Each camera consists of an unobstructed four-mirror anastigmatic optical system,a BaF2.filter,and a photon-counting imaging *** spatial resolution of WAI is ~10 km at the nadir point at a reference height of 110 km above the Earth’s *** sensitivity is>0.01 counts s^(−1) Ray{2.gh^(−1) pixel^(−1)(140-180 nm)for both cameras,which is sufficient for mapping the boundaries and the fine structures of the auroral oval during storms/*** on the tests and calibrations that were conducted prior to launch,the data processing algorithm includes photon signal decoding,geometric distortion correction,photometric correction,flatfield correction,line-of-sight projection and correction,and normalization between the two *** processed images are compared with DMSP SSUSI *** agreement between the images that were captured by two instruments demonstrates that the WAI and the data processing algorithm operate normally and can provide high-quality scientific data for future studies on auroral dynamics.

关键词： storm correction field

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Veratramine, a natural modulator of AP-1-dependent gene transcription via direct binding the programmable DNA

Veratramine, a natural modulator of AP-1-dependent gene tran...

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中国化学会第十届全国天然有机化学学术会议

作者： Kang-Dong liu Fang Bai Jun-Sheng Zhu Jia-wei Wang wei-Dong zhang Zi-Gang Dong Hong-lin li The Basic Medical College Zhengzhou University Department of Engineering mechanics State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Shanghai Key Laboratory of New Drug Design School of Pharmacy East China University of Science and Technology Department of Phytochemistry School of Pharmacy Second Military Medical University The Hormel institute University of Minnesota

＜正＞The transcription factor activator protein 1（AP-1）is involved in many cell procedure,including cell proliferation,transformation,epithelial-mesenchymal transition and apoptosis,by regulating a variety of protein-coding *** targeting AP-1 have promising use in cancer and inflammation *** we report a potent natural modulator,named veratramine,which

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机载摆扫式光谱仪高转速三面摆镜设计与优化

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光学精密工程 2018年第11期26卷 2675-2683页

作者：李颐刘伟谭亚雄张晓辉颜昌翔中国科学院长春光学精密机械与物理研究所吉林长春130033 中国科学院大学北京100049 北京航天自动控制研究所北京100854 宇航智能控制技术国防科技重点实验室北京100854

为满足机载摆扫式光谱仪在2.Hz扫描频率下工作的要求,设计了具有三面反射镜的摆镜结构。首先,计算镜面反射区域面积与旋转轴偏离量的关系,通过比较摆镜布置不同数目反射镜时的性能,设计了围绕旋转轴布置三面反射镜的摆镜结构形式,通过60... 详细信息

为满足机载摆扫式光谱仪在2.Hz扫描频率下工作的要求,设计了具有三面反射镜的摆镜结构。首先,计算镜面反射区域面积与旋转轴偏离量的关系,通过比较摆镜布置不同数目反射镜时的性能,设计了围绕旋转轴布置三面反射镜的摆镜结构形式,通过600r/min的转速即可完成每分钟1 800次的高频摆扫;同时采用匀速摆扫的运动方式,降低了摆镜的控制难度,提高了系统的稳定性。然后,采用拓扑优化、集成优化等方法对摆镜结构进行了优化,摆镜最终质量为5.2.kg,轻量化率达到58%。最后,通过有限元仿真计算得到:摆镜在机载平台600r/min转速离心力与1 g重力的作用下,面型精度RMS值优于λ/2.,基频达到1 199Hz,具有较高的力学稳定性,满足机载摆扫式光谱仪的高扫描频率要求。

关键词：机载摆扫式光谱仪高转速匀速摆扫三面反射镜

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Optimization of temperature characteristics of a transportable 87Rb atomic fountain clock

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Chinese Optics Letters 2019年第8期17卷 1-5页

作者： Xinwen Wang Kangkang liu Henan Cheng wei Ren Jingfeng Xiang Jingwei Ji Xiangkai Peng Zhen zhang Jianbo Zhao Meifeng Ye lin li Tang li Bin Wang Qiuzhi Qu liang liu Desheng Lü Key Laboratory of Quantum Optics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing 100049 China

A high-performance transportable fountain clockis attractive for use in laboratories with high-precisiontime-frequency measurement requirements. This Letterreports the improvement of the stability of atransportable rubidium-87 fountain clock because of anoptimization of temperature characteristics. This clockintegrates its physical packaging, optical benches,microwave frequency synthesizers, and electronic controlsonto an easily movable wheeled plate. Two optical bencheswith a high-vibration resistance are realized in thiswork. No additional adjustment is required after movingthem several times. The Allan deviation of the fountainclock frequency was measured by comparing it with that ofthe hydrogen maser. The fountain clock got a short-termstability of 2.3×10^-13 at 1 s and long-term stabilityon the order of 10-16 at 100,000 s.

关键词： transportable clockis anoptimization

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基于钽球缺药型罩的多模式毁伤元成型规律

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火炸药学报 2021年第2期44卷 212-218页

作者：郭洪卫张浩宇张树凯李元张郑伟贾宪振刘瑞鹏北京理工大学爆炸科学与技术国家重点实验室北京100081 西安近代化学研究所陕西西安710065 吉林江北机械制造有限责任公司吉林吉林132021

为研究钽球缺药型罩毁伤元成型规律,通过爆轰波碰撞理论和马赫高度计算模型分析了起爆半径对毁伤元成型的马赫超压和马赫高度的影响;利用LS-DYNA有限元程序研究了钽球缺药型罩结构参数(内曲率半径、外曲率半径、罩壁厚)对毁伤元成型的... 详细信息

为研究钽球缺药型罩毁伤元成型规律,通过爆轰波碰撞理论和马赫高度计算模型分析了起爆半径对毁伤元成型的马赫超压和马赫高度的影响;利用LS-DYNA有限元程序研究了钽球缺药型罩结构参数(内曲率半径、外曲率半径、罩壁厚)对毁伤元成型的影响。结果表明,中心单点起爆可以形成EFP,环起爆半径为0.8倍装药半径可形成杆式EFP;毁伤元速度和密实度与药型罩内曲率半径呈正相关,与药型罩外曲率半径和药型罩壁厚呈负相关,毁伤元长径比与药型罩内外曲率半径以及壁厚呈负相关;在药型罩内曲率半径R1和外曲率半径R2.系为1.042.R11.08,药型罩壁厚在0.036~0.040倍装药直径的条件下,可形成两种模式的较优侵彻体,杆式EFP对45#钢靶的侵彻深度比EFP提高了71.9%。

关键词：爆炸力学多模式毁伤元钽球缺药型罩结构参数数值模拟

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New innovations in pavement materials and engineering:A review on pavement engineering research 2.2.

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第6期8卷 815-999页

作者： JTTE Editorial Office Jiaqi Chen Hancheng Dan Yongjie Ding Yangming Gao Meng Guo Shuaicheng Guo Bingye Han Bin Hong Yue Hou Chichun Hu Jing Hu Ju Huyan Jiwang Jiang wei Jiang Cheng li Pengfei liu Yu liu Zhuangzhuang liu Guoyang Lu Jian Ouyang Xin Qu Dongya Ren Chao Wang Chaohui Wang Dawei Wang Di Wang Hainian Wang Haopeng Wang Yue Xiao Chao Xing Huining Xu Yu Yan Xu Yang lingyun You Zhanping You Bin Yu Huayang Yu Huanan Yu Henglong zhang Jizhe zhang Changhong Zhou Changjun Zhou Xingyi Zhu Editorial Office of Journal of Traffic and Transportation Engineering(English Edition) Chang’an UnivieristyXi’an 710064China School of Civil Engineering Central South UniversityChangsha 410075China School of Civil Engineering Chongqing Jiaotong UniversityChongqing 400074China Department of Structural Engineering Faculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2628 CNthe Netherlands The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing 100124China College of Civil Engineering Hunan UniversityChangsha 410082China School of Civil and Transportation Engineering Beijing University of Civil Engineering and ArchitectureBeijing 100044China School of Transportation Science and Engineering Harbin Institute of TechnologyHarbin 150090China College of Metropolitan Transportation Beijing University of TechnologyBeijing 100124China School of Civil Engineering&Transportation South China University of TechnologyGuangzhou 510641China School of Transportation Southeast UniversityNanjing 211189China Department of Civil&Environmental Engineering University of WaterlooWaterlooON N2L 3G1Canada Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Highway Chang’an UniversityXi’an 710064China institute of Highway Engineering RWTH Aachen UniversityAachen 52074Germany School of Transportation&Logistics Dalian University of TechnologyDalian 116024China School of Civil Engineering Southwest Jiaotong UniversityChengdu 611756China Faculty of Architecture Civil and Transportation EngineeringBeijing University of TechnologyBeijing 100124China Department of Civil Engineering Aalto UniversityEspoo 02150Finland Nottingham Transportation Engineering Center(NTEC) University of NottinghamNottingham NG72RDUK State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China College of Transportation Engineer

Sustainable and resilient pavement infrastructure is critical for current economic and environmental *** the past 10 years,the pavement infrastructure strongly supports the rapid development of the global social *** theories,new methods,new technologies and new materials related to pavement engineering are *** of pavement infrastructure is a typical multi-physics *** of actual coupled behaviors of traffic and environmental conditions,predictions of pavement service life become more and more complicated and require a deep knowledge of pavement material *** order to summarize the current and determine the future research of pavement engineering,Journal of Traffic and Transportation Engineering(English Edition)has launched a review paper on the topic of"New innovations in pavement materials and engineering:A review on pavement engineering research 2.2.".Based on the joint-effort of 43 scholars from 2. well-known universities in highway engineering,this review paper systematically analyzes the research status and future development direction of 5 major fields of pavement engineering in the *** content includes asphalt binder performance and modeling,mixture performance and modeling of pavement materials,multi-scale mechanics,green and sustainable pavement,and intelligent ***,this review paper is able to provide references and insights for researchers and engineers in the field of pavement engineering.

关键词： Asphalt binder Asphalt mixture Modeling of pavement materials Multi-scale mechanics Green and sustainable pavement Intelligent pavement

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