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Multidisciplinary and multiscale nanoscience research roadmap based on large scientific facilities

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science china Chemistry 2024年第8期67卷 2497-2523页

作者： Yuan Zeng Shuhan Zhang Yuecong Guo Yalin Cong Xu Ding Peihua Li Yunxiang Lin Wenzhi Ren Hui Su Weigang Sun Liuxin Xu Guikai Zhang Shihua Chen Yu Chen Weiren Cheng Shengqi Chu Yong Guan Jinru Han Jie Lin Hengjie Liu Zheyi Liu Pan Luo Fanchun Meng Sicong Qiao Zongyin Song Ying Wang Zhao Wu Chenyu yang Meng yang Shirui yang Zi Yin Zhibin Yin Pengjun Zhang Hongyu Zhang Pingping Zheng Jia Zhou Wanlin Zhou Pengfei An He Cheng Chunhai Fan Xingjiu {{4. Yong Lei Lina Li Mu Li Qinghua Liu Shuming Peng Li Song Zhihu Sun yangchao Tian Fangjun Wang Lihua Wang Liming Wang Shiqiang Wei Aiguo Wu Chunlei Xiao Xueming yang Panchao Yin Jing Zhang Mingxin Zhang Yaling Wang Chunying Chen CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety New Cornerstone Science LaboratoryNational Center for Nanoscience and TechnologyBeijing 100190China university of Chinese Academy of sciences Beijing 100049China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Institutes of Physical science and information technology Anhui UniversityHefei 230601China Ningbo Key Laboratory of Biomedical Imaging Probe Materials and technology Zhejiang International Cooperation Base of Biomedical Materials Technology and ApplicationCAS Key Laboratory of Magnetic Materials and DevicesNingbo Cixi Institute of Biomedical EngineeringZhejiang Engineering Research Center for Biomedical MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Advanced Energy science and technology Guangdong Laboratory Huizhou 516000China College of Chemistry and Chemical Engineering Hunan Normal UniversityChangsha 410081China State Key Laboratory of Luminescent Materials and Devices South China Advanced Institute for Soft Matter Science and TechnologySouth China University of TechnologyGuangzhou 510640China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Separation sciences for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Advanced science Facilities Shenzhen 518107China State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Acade

With the advancement of modern science and technology, large scientific facilities are increasingly oriented toward demand and application, and can be used for basic research as well as serving multiple disciplines. Developing large scientific facilities and related analytical technologies enhances understanding of large scientific facilities and popularizes their application in research across multiple disciplines. The combination of light or neutron sources from large scientific facilities and advanced analytical technologies can be achieved for materials structure information, dynamics study of chemical reactions, high dissociation of biomolecules, 3D visualization of energy materials or biological samples, etc. We first introduce the progress of domestic large scientific facilities of synchrotron radiation(SR) and free electron lasers(FELs) with different wavelengths and neutron *** further discuss the comparison between Chinese and typical foreign facilities in X-ray radiation from X-ray tubes, synchrotrons, X-ray FELs, and neutron sources based on physical parameters of light and neutron sources. In addition, we focus on the technological progress and perspectives combined with advanced X-ray radiation and neutron sources of large scientific facilities in china, especially in the nanoscience fields of energy catalysis and biological science. We hope that this roadmap will provide references on technology and methods to experimental users, as well as prospects for future development of technologies based on large research infrastructure facilities. Comprehensive studies and guidelines for basic research to practical application in various disciplines can be made with the assistance of large scientific facilities.

关键词： large scientific facilities synchrotron radiation FEL light sources neutron sources spectroscopic analysis methods X-ray imaging techniques structural information chemical dynamics

Atmospheric VOCs in an industrial coking facility and the surrounding area:Characteristics,spatial distribution and source apportionment

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Journal of Environmental sciences 2024年第4期138卷 660-670页

作者： Meicheng Wen Weiqiang Deng Jin huang Shu Zhang Qinhao Lin ChaoWang Shengtao Ma Wanjun Wang Xin Zhang Guiying Li Taicheng An Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlInstitute of Environmental Health and Pollution controlGuangdong University of TechnologyGuangzhou 510006China Guangdong Engineering technology Research Center for Photocatalytic technology Integration and Equipment Guangzhou Key Laboratory of Environmental Catalysis and Pollution ControlSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China Institute of Environmental science Shanxi UniversityTaiyuan 030006China

Industrial coking facilities are an important emission source for volatile organic compounds(VOCs).This study analyzed the atmospheric VOC characteristics within an industrial coking facility and its surrounding *** concentrations of total VOCs(TVOCs)in the surrounding residential activity areas(R1 and R2),the coking facility(CF)and the control area(CA)were determined to be 138.5,4..8,550.0,and 15.0μg/m^(3),*** cold drum process and coking and quenching areas within the coking facility were identified as the main polluting *** spatial variation in VOCs composition was analyzed,showing that VOCs in the coking facility and surrounding areas were mainly dominated by aromatic compounds such as BTX(benzene,toluene,and xylenes)and naphthalene,with concentrations being negatively correlated with the distance from the coking facility(p3.5%,33.3% and 27.7% of TVOCs in CF,R1 and R2,*** results demonstrated that coking emissions had a significant impact on VOC concentrations in the areas surrounding coking *** study evaluates the spatial variation in exposure to VOCs,providing important information for the influence of VOCs concentration posed by coking facility to surrounding residents and the development of strategies for VOC abatement.

关键词： Coking facility Volatile organic compounds Emission inventory Spatial distribution Source apportionment

新型冠状病毒感染疫情常态化防控背景下社区医务人员心理健康状况及影响因素分析

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中国全科医学 2024年第7期27卷 834-842页

作者：杨华杰王皓翔陈运聪梁旭东王家骥黄翔广东开放大学(广东理工职业学院)健康产业学院广东省中山市528400 中山大学公共卫生学院广东省广州市510080 广东省中山市三乡镇社区卫生服务中心公共卫生业务管理科 528463 广东省中山市板芙镇社区卫生服务中心 528459 广东省广州市广东省基层卫生协会510000 澳门科技大学医学院中国澳门特别行政区999078

背景自新型冠状病毒感染(简称新冠感染)疫情发生以来,身处防控一线的社区医务人员面临着直接接触病毒的风险,存在工作强度大、工作时间长、心理压力大等问题,因此探究社区医务人员的心理健康状况及其内在联系对精准实施心理干预具有重... 详细信息

背景自新型冠状病毒感染(简称新冠感染)疫情发生以来,身处防控一线的社区医务人员面临着直接接触病毒的风险,存在工作强度大、工作时间长、心理压力大等问题,因此探究社区医务人员的心理健康状况及其内在联系对精准实施心理干预具有重要意义。目的了解新冠感染疫情常态化防控期间社区医务人员心理健康状况并探讨其影响因素。方法于2021年12月,采用多阶段随机抽样法,选取296名中山市社区医务人员作为调查对象,采用一般资料调查表、自行编制的社区医务人员新型冠状病毒感染疫情防控工作压力调查问卷、广泛性焦虑量表(GAD-7)和患者健康问卷抑郁症状群量表(PHQ-9)对其进行网络问卷调查,采用多因素Logistic回归分析探讨社区医务人员新冠感染疫情防控工作感知压力水平及焦虑、抑郁情绪状态存在情况的影响因素。结果中山市社区医务人员新冠感染疫情防控工作高感知压力的检出率为10.1%(30/296);中度及以上焦虑和抑郁的检出率分别为7.1%(21/296)和9.5%(28/296);性别、抑郁情绪状态存在情况和新冠感染疫情防控工作感知压力水平是社区医务人员焦虑情绪状态存在情况的影响因素(P<0.05);疫情期间从事日常诊疗工作情况、疫情期间从事“三人小组”上门排查工作情况、焦虑情绪状态存在情况和新冠感染疫情防控工作感知压力水平是社区医务人员抑郁情绪状态存在情况的影响因素(P<0.05);焦虑、抑郁情绪状态存在情况是社区医务人员新冠感染疫情防控工作感知压力水平的影响因素(P<0.05)。结论社区医务人员新冠感染疫情防控工作压力与焦虑和抑郁负性情绪之间彼此关联、相互影响、相互作用,且疫情防控工作任务与人力资源的相对不足等因素加剧了社区医务人员负性情绪的叠加效应,卫生健康行政部门应结合疫情常态化防控阶段社区卫生服务机构的发展特点及暴露出的突出问题,着力构建新形势下社区卫生服务机构的长效投入和发展机制,加强对医务人员的心理干预指导。

关键词：新型冠状病毒感染社区卫生工作者社区医务人员心理健康影响因素分析

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Ka-band thin film lithium niobate photonic integrated optoelectronic oscillator

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Photonics Research 2024年第6期12卷 1283-1293页

作者： RUI MA ZIJUN huang SHENGQIAN GAO JINGYI WANG XICHEN WANG XIAN ZHANG PENG HAO X.STEVE YAO XINLUN CAI State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275China Photonics information Innovation Center and Hebei Provincial Center for Optical Sensing College of Physics Science and TechnologyHebei UniversityBaoding 071002China NuVison Photonics Inc.Las VegasNevada 89109USA

Photonics integration of an optoelectronic oscillator(OEO)on a chip is attractive for fabricating low cost,compact,low power consumption,and highly reliable microwave sources,which has been demonstrated recently in silicon on insulator(SOI)and indium phosphide(InP)platforms at X-band around 8 *** we demonstrate the first integration of OEOs on the thin film lithium niobate(TFLN)platform,which has the advantages of lower Vπ,no chirp,wider frequency range,and less sensitivity to *** have successfully realized two different OEOs operating at Ka-band,with phase noises even lower than those of the X-band OEOs on SOI and InP *** is a fixed frequency OEO at 30 GHz realized by integrating a Mach–Zehnder modulator(MZM)with an add-drop microring resonator(MRR),and the other is a tunable frequency OEO at 20–35 GHz realized by integrating a phase modulator(PM)with a notch *** work marks the first step of using TFLN to fabricate integrated OEOs with high frequency,small size,low cost,wide range tunability,and potentially low phase noise.

关键词： optoelectronic modulator resonator

The issues on the commercialization of perovskite solar cells

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Materials Futures

Materials Futures 2024年第2期3卷 1-35页

作者： Lixiu Zhang Yousheng Wang xiangchuan Meng Jia Zhang Pengfei Wu Min Wang Fengren Cao Chunhao Chen Zhaokui Wang Fu yang Xiaodong Li Yu Zou Xi Jin Yan Jiang Hengyue Li Yucheng Liu Tongle Bu Buyi Yan Yaowen Li Junfeng Fang Lixin Xiao Junliang yang Fuzhi huang Shengzhong Liu Jizhong Yao Liangsheng Liao Liang Li Fei Zhang Yiqiang Zhan Yiwang Chen Yaohua Mai Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China Institute of New Energy technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632People’s Republic of China Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031People’s Republic of China school of information science and technology Fudan UniversityShanghai 200433People’s Republic of China school of Chemical Engineering and technology Tianjin UniversityTianjin 300072People’s Republic of China school of Physical science and technology Soochow UniversitySuzhou 215006People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Institute of optoelectronics Fudan UniversityShanghai 200433People’s Republic of China College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123People’s Republic of China school of Physics and Electronic science East China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Department of PhysicsPeking UniversityBeijing 100871People’s Republic of China College of Biophotonics South China Normal UniversityGuangzhou 510631People’s Republic of China school of Materials science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China school of Physics and Electronics Central South UniversityChangsha 410083People’s Republic of China school of Materials science and Engineering Shaanxi Normal UniversityXi’an 710119People’s Republic of China State Key Laboratory of Advanced technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Microquanta semiconductor Hangzhou 311121People’s Republic of China

Perovskite solar cells have aroused a worldwide research upsurge in recent years due to their soaring photovoltaic performance,ease of solution processing,and low *** power conversion efficiency record is constantly being broken and has recently reached 26.1%in the lab,which is comparable to the established photovoltaic technologies such as crystalline silicon,copper indium gallium selenide and cadmium telluride(CdTe)solar ***,perovskite solar cells are standing at the entrance of industrialization,where huge opportunities and risks ***,towards commercialization,challenges of up-scaling,stability and lead toxicity still remain,the proper handling of which could potentially lead to the widespread adoption of perovskite solar cells as a low-cost and efficient source of renewable *** review gives a holistic analysis of the path towards commercialization for perovskite solar cells.A comprehensive overview of the current state-of-the-art level for perovskite solar cells and modules will be introduced first,with respect to the module efficiency,stability and current status of *** will then discuss the challenges that get in the way of commercialization and the corresponding strategies to address them,involving the upscaling,the stability and the lead toxicity *** into the future direction of commercialization of perovskite photovoltaics was also provided,including the flexible perovskite cells and modules and perovskite indoor ***,the future perspectives towards commercialization are put forward.

关键词： commercializations perovskite solar cells state-of-the-art level challenges and perspectives indoor photovoltaics

Non-ambiguity of blind watermarking:a revisit with analytical resolution

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science in china(Series F) 2009年第2期52卷 276-285页

作者： KANG xiangui huang jiwu ZENG WenJun SHI Yun Q. school of information science & technology Sun Yat-Sen University Guangzhou 510275 China Department of CS University of Missouri-Columbia MO65211 USA Department of ECE New Jersey Institute of Technology NJ 07102 USA

Resistance to ambiguity attack is an important requirement for a secure digital rights management （DRM） system. In this paper, we revisit the non-ambiguity of a blind watermarking based on the computational indistinguishability between pseudo random sequence generator （PRSG） sequence ensemble and truly random sequence ensemble. Ambiguity attacker on a watermarking scheme, which uses a PRSG sequence as watermark, is viewed as an attacker who tries to attack a noisy PRSG sequence. We propose and prove the security theorem for binary noisy PRSG sequence and security theorem for general noisy PRSG sequence. It is shown that with the proper choice of the detection threshold Th = α n （a is a normalized detection threshold; n is the length of a PRSG sequence） and n i≥ 1.39 × m/α^2 （m is the key length）, the success probability of an ambiguity attack and the missed detection probability can both be made negligibly small thus non-ambiguity and robustness can be achieved simultaneously for both practical quantization-based and blind spread spectrum （SS） watermarking schemes. These analytical resolutions may be used in designing practical non-invertible watermarking schemes and measuring the non-ambiguity of the schemes.

关键词： watermarking ambiguity attack PRSG sequence computational indistinguishability digital rights management (DRM)

TMAS:A transaction misbehavior analysis scheme for blockchain

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Blockchain(Research and Applications) 2024年第3期5卷 42-52页

作者： Shiyong huang Xiaohan Hao Yani Sun Chenhuang Wu Huimin Li Wei Ren Kim-Kwang Raymond Choo school of Computer science China University of GeosciencesWuhan430074China Artificial Intelligence Thrust Information HubHong Kong University of Science and TechnologyGuangzhou511400China Yunnan Key Laboratory of Blockchain Application technology Yunnan Innovation Institute of Beihang UniversityKunming650233China Fujian Key Laboratory of Financial information Processing Putian UniversityPutian351100China Department of information Systems and Cyber Security University of Texas at San AntonioSan AntonioTX 78249-0631USA

Blockchain-based cryptocurrencies,such as Bitcoins,are increasingly ***,the decentralized and anonymous nature of these currencies can also be(ab)used for nefarious activities such as money laundering,thus reinforcing the importance of designing tools to effectively detect malicious transaction *** this paper,we propose TMAS,a transaction misbehavior analysis scheme for blockchain-based ***,the proposed system includes ten features in the transaction graph,two heuristic money laundering models,and an analysis method for account linkage,which identifies accounts that are distinct but controlled by an identical *** evaluate the effectiveness of our proposed indicators and models,we analyze 100 million transactions and compute transaction features,and are able to identify a number of suspicious ***,the proposed methods can be applied to other cryptocurrencies,such as token-based cryptocurrencies(e.g.,Bitcoins)and account-based cryptocurrencies(e.g.,Ethereum).

关键词： Blockchain Anti-money laundering Bitcoin Cyptocurrency

Survey of information security

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science in china(Series F) 2007年第3期50卷 273-298页

作者： SHEN Changxiang ZHANG huangGuo FENG DengGuo CAO ZhenFu huang jiwu Computing technology Institute of china Navy Beijing 100841 China school of Computer Wuhan University Wuhan 430072 China Institute of Software Chinese Academy of Sciences Beijing 100080 China Department of Computer science and technology Shanghai Jiaotong University Shanghai 200030China information technology Institute Zhongshan University Guangzhou 510275 China

The 21st century is the age of information when information becomes an important strategic resource. The information obtaining, processing and security guarantee capability are playing critical roles in comprehensive national power, and information security is related to the national security and social stability. Therefore, we should take measures to ensure the information security of our country. In recent years, momentous accomplishments have been obtained with the rapid development of information security technology. There are extensive theories about information security and technology. However, due to the limitation of length, this article mainly focuses on the research and development of cryptology, trusted computing, security of network, and information hiding, etc.

关键词： information security cryptology trusted computing network security information hiding

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基于学习排序的并行协同过滤推荐算法

华中科技大学学报（自然科学版） 2018年第3期46卷 36-41页

作者：肖菁袁凌黄昌勤吴不晓华南师范大学计算机学院广东广州510631 华南师范大学教育信息技术学院广东广州510631 华中科技大学计算机科学与技术学院湖北武汉430074

为实现大数据环境下高效、精准的商品推荐,将协同过滤思想与信息检索理论有机融合,提出基于学习排序（LTR）的并行协同过滤推荐算法.首先利用相似物品-物品网络图结构共享参数的方法减少参数,通过Pairwise方法构造目标函数,并利用梯度... 详细信息

为实现大数据环境下高效、精准的商品推荐,将协同过滤思想与信息检索理论有机融合,提出基于学习排序（LTR）的并行协同过滤推荐算法.首先利用相似物品-物品网络图结构共享参数的方法减少参数,通过Pairwise方法构造目标函数,并利用梯度上升法得到参数.还提出了通过使用层次聚类的方法对差异性较大的相似图进行分裂,以保证推荐的准确度.最后给出大数据平台Spark下该推荐算法的并行化实现方案.在真实数据集Netflix上的实验结果表明：提出的算法不仅在召回率和准确率上有所提高,而且计算效率高效,表明该方法可以应用于大数据场景中的推荐服务.

关键词：推荐算法协同过滤学习排序(LTR) Top N推荐并行化 Spark平台