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Broadband light absorption and photoresponse enhancement in monolayer WSe_(2) crystal coupled to Sb_(2)O_(3) microresonators

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Nano Research 2022年第5期15卷 4653-4660页

作者： Kun Ye Lixuan Liu Congpu Mu Kun Zhai Shiliang Guo Bochong Wang Anmin Nie shuhan meng Fusheng Wen Jianyong Xiang Tianyu Xue Ming Kang Yongji Gong Yongjun Tian Zhongyuan Liu Center for High Pressure Science(CHiPS) State Key Laboratory of Metastable Materials Science&TechnologyYanshan UniversityQinhuangdao 066004China Hebei Key Laboratory of Microstructure Materials Physics School of ScienceYanshan UniversityQinhuangdao 066004China School of Materials Science and Engineering Beihang UniversityBeijing 100191China School of Electrical Engineering Yanshan UniversityQinhuangdao 066004China College of Physics and Materials Science Tianjin Normal UniversityTianjin 300387China

Monolayer(1L)transition metal dichalcogenides(TMDCs)have been attracting tremendous interest in recent years as promising candidate materials in atomic-scale optoelectronic devices due to their direct band gaps(1.5-2.2 eV)and strong light-matter ***,their practical applications are limited by low visible light absorption stemming from atomic thickness and negligible infrared ***,we report the triangular Sb_(2)O_(3) microresonators in wide thickness and lateral size distributions grown on 1L TMDCs and their created significant broadband enhancement of light adsorption and photoresponse in 1L WSe_(2) crystal via coexisting Fabry-Perot and whispering gallery type *** an example of demonstration,1L WSe_(2) crystal coupled to Sb_(2)O_(3) microresonators with widely distributed sizes exhibits the enhanced visible light absorption by up to 5 folds and the simultaneously extended near infrared(NIR)one of more than 50%.For application of 1L WSe_(2) in photodetection,incorporation of Sb2O3 microresonators leads to significantly enhanced visible light responsivity by~10^(4) order and expanded NIR one of more than 400 mA·W^(-1).Similar results have been observed in the other 1L W(Mo)dichalcogenides coupled to Sb2O3 *** work provides a new route for development of the high-performance monolayer TMDCs-based optoelectronic devices.

关键词： transition metal dichalcogenides Sb_(2)O_(3)optical microresonator photodetectors enhanced absorption broad bandwidth

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Spatial and Temporal Evolution Characteristics of PM2.5 in China from 1998 to 2016

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Chinese Geographical Science 2020年第6期30卷 947-958页

作者： LI Hua TONG Helong WU Xianhua LU Xiaoli meng shuhan School of Economics&Management Shanghai Maritime UniversityShanghai 201306China College of Foreign Languages Shanghai Maritime UniversityShanghai 201306China

The rapid development of China’s economy and urbanization has given rise to noticeable environmental problems,among which the change of air quality has received extensive *** panel data of PM2.5(particles with an aerodynamic diameter of 2.5μm or less)in 343 prefecture-level cities in China from 1998 to 2016 were statistically analyzed to reveal the characteristics of the temporal evolution and spatial variation of China’s air quality in the past two *** results show that:1)the overall deterioration trend of air quality is obvious throughout the *** variation trend of PM2.5 was divided into three phases:rapid-growth phase(1998–2007),lag phase(2006–2011)and mildly-incremental phase(2012–2016),with their average growth rates of 7.19%,-3.59%and 0.52%,respectively.2)The spatial difference of PM2.5 values in China increased significantly with *** 2003,the high-value area in the east has expanded rapidly,and polarization became much more *** change rate of PM2.5 is high in the east and west and low in the *** change rates of most areas in the west exceed more than 80%,and in the east lie somewhere between 40%and 60%.In the midlands,the change rate is not large and some regions even show a negative growth.3)The change rate of PM2.5 is also high in areas with higher ***,in regions where the change rate of PM2.5 is high,the value of PM2.5 is not always *** high change rate is mainly attributable to the low base value of PM2.5 and the cities concerned belong to sensitive areas.4)According to the PM2.5 warning index,the number of strong,medium,weak and non-warning areas in China is 45,85,159 and 54,respectively.

关键词： PM2.5 air quality spatial and temporal evolution pre-warning China

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The role of angiotensinⅡtype 1 receptor pathway in cerebral ischemia-reperfusion injury:Implications for the neuroprotective effectof ARBs

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Neuroprotection 2024年第2期2卷 100-119页

作者： shuhan Huang meng Zhang Department of Neurology and Center for Clinical Neuroscience DapingHospitalArmy Medical UniversityChongqingChina Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqing Medical UniversityChongqingChina

Cerebral ischemia-reperfusion(I/R)injury is a crucial factor that impacts the prognosis of recanalization therapy for acute ischemic stroke(AIS).It has been found that the brain renin-angiotensin system,especially the angiotensinⅡtype 1 receptor(AT1R)pathway,plays a significant role in cerebral I/R *** pathway is involved in processes such as oxidative stress,neuroinflammation,apoptosis,and it affects cerebrovascular autoregulation and the maintenance of blood-brain ***1R blocker(ARB),widely used as an antihypertensive agent,has demonstrated stroke prevention capabilities in numerous prospective studies,independent of its antihypertensive *** focusing on neurological diseases like Alzheimer's disease,Parkinson's disease,and cognitive impairment have confirmed that ARBs exhibit neuroprotective effects and aid in improving neurological *** studies have shown that ARBs can reduce infarct volume and brain edema,inhibit multiple signaling pathways associated with I/R injury,restore energy levels in damaged brain regions,and rescue the penumbra by promoting neovascularization in cerebral I/R *** findings suggest that ARBs have potential to become a novel category of neuroprotecting agents for clinical treatment of ***,this review primarily provides a theoretical foundation and practical evidence for the future clinical utilization of ARBs as neuroprotective agents following reperfusion therapy for *** outlines the role of cerebral I/R injury through the AT1R pathway and highlights the research progressmadeonARBs in I/Rmodels.

关键词： acute ischemic stroke angiotensinⅡtype 1receptor blocker ischemia-reperfusion injury neuroinflammation oxidative stress

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高校图书馆社交休闲空间需求与供给优化研究——以暨南大学为例

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图书馆学刊 2023年第2期45卷 39-45,68页

作者：朱前东孟姝含暨南大学图书馆广东广州510632 暨南大学公共管理学院应急管理学院广东广州510632

用户社交休闲空间需求日益增长是图书馆空间演变的重要时代特征与发展趋势,高校图书馆面临拓展和优化社交休闲空间供给的现实压力。通过问卷调查暨南大学师生对图书馆社交休闲空间及空间要素的需求,结果表明,读者对于社交休闲空间特定... 详细信息

用户社交休闲空间需求日益增长是图书馆空间演变的重要时代特征与发展趋势,高校图书馆面临拓展和优化社交休闲空间供给的现实压力。通过问卷调查暨南大学师生对图书馆社交休闲空间及空间要素的需求,结果表明,读者对于社交休闲空间特定的空间类型、设备设施、环境氛围以及服务有着较高的需求。分析表明,用户身份、专业、性别等人口学变量对其需求产生一定影响,提出从空间规划、环境布置、智慧化建设、多元文化服务等7个方面进行空间供给优化的策略。

关键词：高校图书馆社交空间休闲空间空间再造需求

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黄绵土细沟水流输沙能力对地表冲刷流量的响应

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水土保持学报 2022年第6期36卷 63-69,81页

作者：孟书翰厉晓峰杨佳慧雷廷武山东农业大学水利土木工程学院山东泰安271018 西北农林科技大学资源环境学院陕西杨凌712100 中国农业大学水利与土木工程学院北京100083

为明确黄绵土在径流冲刷下的细沟侵蚀特征和产流产沙规律,通过细沟模拟,设计3个流量(2,4,8 L/min)和4个坡度(5°,10°,15°,20°),在变坡土槽中进行室内冲刷试验,实测不同坡度和流量下黄绵土在坡面细沟发育过程中产生的最大径流含沙量,... 详细信息

为明确黄绵土在径流冲刷下的细沟侵蚀特征和产流产沙规律,通过细沟模拟,设计3个流量(2,4,8 L/min)和4个坡度(5°,10°,15°,20°),在变坡土槽中进行室内冲刷试验,实测不同坡度和流量下黄绵土在坡面细沟发育过程中产生的最大径流含沙量,并得到其相应的输沙能力(A)。结果表明,当坡度一定时,输沙能力随流量增大呈线性增大,且坡度越大增幅越明显;当流量较小时,输沙能力随坡度增加而缓慢增加,当流量达到8 L/min时,输沙能力随坡度增加的幅度更为明显,但坡度上升到15°以后几乎不再变化,说明流量对输沙能力的影响更为显著。含沙量(c)随沟长(x)的变化规律符合数学模型c=A(1-e^(-Bx)),控制所有流量坡度组合在不同沟长(1,2 m)条件下进行冲刷试验,将冲刷测量得到的径流含沙量与各组合下的输沙能力(A)代入关系式,利用待定系数法计算出不同试验条件下含沙量随沟长变化的衰减系数(B)。研究结果可为黄绵土水土保持研究与实践提供理论基础与科学依据。

关键词：黄绵土细沟侵蚀输沙能力坡长含沙量

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对认罪认罚从宽制度中律师见证行为的研究——以检察机关为视角

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上海公安学院学报 2022年第2期32卷 79-84页

作者：左黎孟书涵上海市闵行区人民检察院上海201199

我国的认罪认罚从宽制度是一种具有中国特色的限权型诉辩协商。基于委托代理合同,律师的辩护权应当在尊重犯罪嫌疑人、被告人意愿的基础上行使。律师在认罪认罚中的作用主要体现在提供法律咨询、释法说理以及在认罪认罚协商过程中见证... 详细信息

我国的认罪认罚从宽制度是一种具有中国特色的限权型诉辩协商。基于委托代理合同,律师的辩护权应当在尊重犯罪嫌疑人、被告人意愿的基础上行使。律师在认罪认罚中的作用主要体现在提供法律咨询、释法说理以及在认罪认罚协商过程中见证犯罪嫌疑人的自愿性。律师见证是一种程序性的见证,不排斥律师的独立辩护权,即使律师在认罪认罚具结书上签字了,仍有权独立发表与认罪认罚具结书内容不同的辩护意见。应当规范律师在认罪认罚见证活动中的参与流程,实现司法公正和司法高效的有机统一。

关键词：认罪认罚律师见证辩护权

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基于火电厂源侧的综合能源系统集成及优化配置研究

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动力工程学报 2024年第4期44卷 650-657页

作者：员盼锋徐舒涵丹慧杰张民牛国平蒙毅西安西热锅炉环保工程有限公司西安710054 清华大学能源与动力工程系北京100084 华能国际电力股份有限公司日照电厂山东日照276800

提出一种基于火电厂源侧的综合能源系统构型,该系统以火电机组为核心,在系统的输入端耦合生物质气化、垃圾气化、干化污泥等多种可再生能源输入,在输出端供应冷、热、汽、电等多种能源产品,并将电厂热平衡模型与可再生能源模型及制冷制... 详细信息

提出一种基于火电厂源侧的综合能源系统构型,该系统以火电机组为核心,在系统的输入端耦合生物质气化、垃圾气化、干化污泥等多种可再生能源输入,在输出端供应冷、热、汽、电等多种能源产品,并将电厂热平衡模型与可再生能源模型及制冷制热系统模型耦合,建立以[火用]效率和经济性为目标的优化配置方法,采用输入端优化与输出端优化2类优化逻辑,从系统输入端、输出端来分析火电厂源侧综合能源系统主要运行参数对经济性和[火用]效率优化目标的影响。结果表明:综合能源改造对现阶段火电厂具有积极意义。

关键词：火电厂综合能源系统优化配置可再生能源

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融合注意力的滤波器组双视图图卷积运动想象脑电分类

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浙江大学学报（工学版） 2024年第7期58卷 1326-1335,1356页

作者：吴书晗王丹陈远方贾子钰张越棋许萌北京工业大学信息学部北京100124 北京机械设备研究所北京100854 中国科学院自动化研究所脑网络组研究中心北京100190

在运动想象任务中,传统卷积神经网络难以准确表达大脑多区域协同神经活动;图卷积网络(GCN)能够在图数据中考虑节点(脑区)间的连接和关系,适于表示不同脑区的协同任务,为此提出融合注意力的滤波器组双视图GCN(AFB-DVGCN).由滤波器组构建... 详细信息

在运动想象任务中,传统卷积神经网络难以准确表达大脑多区域协同神经活动;图卷积网络(GCN)能够在图数据中考虑节点(脑区)间的连接和关系,适于表示不同脑区的协同任务,为此提出融合注意力的滤波器组双视图GCN(AFB-DVGCN).由滤波器组构建双分支网络,提取不同频段的时域和空域信息;采用双视图图卷积空间特征提取方法实现信息互补;利用有效通道注意力机制增强特征和捕捉不同特征图的交互信息,以提高分类准确率.在公开数据集BCI Competition Ⅳ-2a和OpenBMI上的验证结果表明,AFB-DVGCN的分类性能良好,其分类准确率显著高于对比网络的分类准确率.

关键词：脑机接口运动想象深度学习图卷积网络注意力机制

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黄绵土坡面细沟侵蚀剥蚀能力试验

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水土保持学报 2023年第1期37卷 84-89,96页

作者：厉晓峰黄钰涵孟书翰亓波杨佳慧张俊鹏雷廷武山东农业大学水利土木工程学院山东泰安271018 广西大学林学院南宁530004 中国农业大学水利与土木工程学院北京100083

为研究黄土坡面细沟侵蚀规律,探究水流剥蚀能力的室内测算方法,以黄绵土为研究对象,设置2,4,6,8 L/min 4个流量,5°,10°,15°,20°4个坡度,土槽长度为12 m,进行室内径流冲刷试验,得到黄绵土坡面细沟侵蚀的临界沟长和输沙能力,基于二者... 详细信息

为研究黄土坡面细沟侵蚀规律,探究水流剥蚀能力的室内测算方法,以黄绵土为研究对象,设置2,4,6,8 L/min 4个流量,5°,10°,15°,20°4个坡度,土槽长度为12 m,进行室内径流冲刷试验,得到黄绵土坡面细沟侵蚀的临界沟长和输沙能力,基于二者之间的函数关系,推导出剥蚀能力的计算公式,以此研究不同试验条件下临界沟长、输沙能力和剥蚀能力的变化规律,并验证方法的准确性。结果表明:在设计水力工况条件下,黄绵土坡面细沟侵蚀的临界沟长的变化范围在5.33~11.12 m,且临界沟长随流量和坡度的增加而缩短;输沙能力随流量和坡度的增大而增大;剥蚀能力与流量之间存在明显的线性关系,与坡度之间存在较好的对数关系。试验方法与其他方法相比,操作便捷、结果吻合度高,能较好地确定黄土区细沟侵蚀的剥蚀能力。研究结果可进一步完善黄土坡面细沟侵蚀理论。

关键词：细沟侵蚀临界沟长剥蚀能力输沙能力冲刷试验

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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 Huang 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

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