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Effects of various donor:acceptor blend ratios on photophysical properties in non-fullerene organic bulk heterojunctions

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Chinese Chemical Letters 2019年第5期30卷 995-999页

作者： Zhenchuan Wen Xuejian Ma Xiaoyu Yang Pengqing Bi Mengsi Niu kangning Zhang Lin feng Xiaotao Hao School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJi'nan 250100China ARC Centre of Excellence in Exciton Science School of ChemistryThe University of MelbourneParkvilleVictoria3010Australia

The composition ratio of donor and acceptor materials in organic bulk heterojunction (BHJ) is one of the key parameters to govern the performance in organic solar cells (OSCs). Therefore, high-performance non-fullerene organic bulk heterojunction consisting of poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b' ]dithiophene))-co-(1,3-di(5-thiophene-2-yl)–5,7-bis(2-ethylhexyl) benzo[1,2-c:4,5-c']dithiophene-4,8-dione)] (PBDB-T) and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))–5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2' ,3'-d' ]-s-indaceno[1,2-b:5,6-b' ]-dithio-phene (ITIC) are used to investigate the correlation among various donor: acceptor (D:A) ratios, photophysical properties and photovoltaic performance. Interestingly, the function of short-circuit current (Jsc) and D:A ratios demonstrates an axisymmetric trend. When the blending ratio of D:A deviates from the optimal ratio, the symmetrically decreased Jsc is derived from a reduction in the D:A interface or amorphous region. Research on the steady-state photoluminescence (PL), the time-resolved fluorescence spectroscopy measurements, atomic force microscopic (AFM) and grazing-incidence small angle X-rays scattering (GIWAXS) indicates no significant variation in energy loss in the process of changing D:A ratios in BHJs. With high donor or acceptor content, the domain size improves significantly, but the distance of π-π stacking corresponding to molecular packing has not changed significantly, and the bi-continuous percolation pathways were not obviously influenced.

关键词： Photophysical properties Non-fullerene Bulk heterojunctions Various blend ratios Organic solar cells

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Salinity fronts shape spatial patterns in zooplankton distribution in Hangzhou Bay

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Acta Oceanologica Sinica 2024年第6期43卷 96-106页

作者： Yepeng Xu Yiqi Wang Lin Zhan Yijun Ou kangning Jia Ming Mao Xuyu Zhu Zhibing Jiang Yuanli Zhu Wei Huang Ping Du Jiangning Zeng Lu Shou feng Zhou Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province Hangzhou 310012China State Key Laboratory of Satellite Ocean Environment Dynamics Ministry of Natural ResourcesHangzhou 310012China Nantong Marine Environmental Monitoring Center Ministry of Natural ResourcesNantong 226002China Key Laboratory of Ocean Space Resource Management Technology Ministry of Natural ResourcesHangzhou 310012China Observation and Research Station of Marine Ecosystem in the Yangtze River Delta Ministry of Natural ResourcesZhoushan 316021China

Ocean fronts play important roles in nutrient transport and in the shaping ecological *** zones in small bays are typically small in scale,have a complex structure,and they are spatially and temporally variable,but there are limited data on how biological communities respond to this *** Bay,a mediumsized estuary in China,is an ideal place in which to study the response of plankton to small-scale ocean fronts,because three water masses(Qiantang River Diluted Water,Changjiang River Diluted Water,and the East China Sea current) converge here and form dynamic salinity fronts throughout the *** investigate zooplankton communities,and temperature,salinity and chlorophyll a(Chl a) in Hangzhou Bay in June(wet perio d) and December(dry period) of 2022 and examine the dominant environmental factors that affect zooplankton community spatial *** then match the spatial distributions of zooplankton communities with those of salinity fronts.S alinity is the most important explanatory variable to affect zooplankton community spatial variability during both wet and dry periods,in that it contributes>60% of the variability in community ***,the spatial distributions of zooplankton match well with salinity *** December,with weaker Qiantang River Diluted Water and a stronger secondary Changjiang River Plume,zooplankton communities occur in moderate salinity(MS,salinity range 15.6±2.2) and high salinity(HS,22.4±1.7) regions,and their ecological boundaries closely match the Qiantang River Diluted Water *** June,different zooplankton communities occur in low salinity(LS,3.9±1.0),MS(11.7±3.6) and HS(21.3±1.9) *** the LS region occurs abnormally in the central bay rather than its apex because of the anomalous influence of rising and falling tides during the sampling perio d,the ecological boundaries still match salinity ***-salinity or brackish-water zooplankter taxa are relatively more abunda

关键词： zooplankton spatial distribution salinity fronts Hangzhou Bay

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Stenting for symptomatic intracranial arterial stenosis in China:1-year outcome of a multicentre registry study

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Stroke & Vascular Neurology 2018年第3期3卷 176-184页

作者： Ning Ma Yong Zhang Jie Shuai Changchun Jiang Qiyi Zhu kangning Chen Li Liu Baomin Li Xiangqun Shi Lianbo Gao Yajie Liu feng Wang Yongli Li Tieyan Liu Hongbo Zheng Dapeng Mo feng Gao Yilong Wang Yongjun Wang Lei feng Zhongrong Miao Department of Interventional Neurology Beijing Tiantan HospitalCapital Medical UniversityChina National Clinical Research Center for Neurological DiseasesCenter of StrokeBeijing Institute for Brain DisordersBeijingChina Department of Neurology The Affiliated Hospital of Qingdao University Medical CollegeQingdaoChina Department of Neurology Xin Qiao HospitalThird Military Medical UniversityChongqingChina Department of Neurology Baotou Central HospitalBaotouChina Department of Neurology Linyi People's HospitalLinyiChina Department of Neurology Xi Nan HospitalThird Military Medical UniversityChongqingChina Department of Neurology The Hospital of Chifeng CityChifengChina Department of Neurosurgery The PLA General HospitalBeijingChina Department of Neurology The Lanzhou General Hospital of PLALanzhouChina Department of Neurology The Affiliated Fourth Hospital of China Medical UniversityShenyangChina Department of Neurology Zhujiang HospitalSouthern Medical UniversityGuangzhouChina Department of Interventional Therapy The First Affiliated Hospital of Dalian Medical UniversityDalianChina Department of Neurosurgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Interventional Radiology Cangzhou Central HospitalCangzhouChina Department of Neurology West China HospitalSichuan UniversityChengduChina Department of Neurology Beijing Tiantan HospitalCapital Medical UniversityChina National Clinical Research Center for Neurological DiseasesCenter of StrokeBeijing Institute for Brain DisordersBeijingChina Departments of Radiology Kaiser Permanente Los Angeles Medical CenterLos AngelesUSA

background and purpose A multicentre prospective registry study of individually tailored stenting for a patient with symptomatic intracranial atherosclerotic stenosis(ICAS)combined with poor collaterals in China showed that the short-term safety and efficacy of stenting was ***,it remained uncertain whether the low event rate could be of a long *** reported the 1-year outcome of this registry study to evaluate the long-term efficacy of individually tailored stenting for patients with severe symptomatic ICAS combined with poor *** Patients with symptomatic ICAS caused by 70%-99% stenosis located at the intracranial internal carotid,middle cerebral,intracranial vertebral or basilar arteries combined with poor collaterals were ***-mounted stent or balloon plus self-expanding stent were selected based on the ease of vascular access and lesion morphology determined by the *** primary outcome was the rate of 30-day stroke,transient ischaemic attack and death,and 12-month ischaemic stroke within the same vascular territory,haemorrhagic stroke and vascular death after *** From September 2013 to January 2015,300 patients(ages 58.3±9.78 years)were *** them,159 patients were treated with balloon-mounted stent and 141 with balloon plus self-expanding *** the 1-year follow-up,25 patients had a primary end point *** probability of primary outcome at 1 year was 8.1%(95% CI 5.3% to 11.7%).In 76 patients with digital subtraction angiography follow-up,27.6%(21/76)had re-stenosis≥50% and 18.4%(14/76)had re-stenosis≥70%.No baseline characteristic was associated with the primary *** The event rate remains low over 1 year of individually tailored stenting for patients with severe symptomatic ICAS combined with poor *** randomised trial of comparing individually tailored stenting with best medical therapy is needed.

关键词： stenosis balloon intracranial

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外商直接投资对提升地区生产率存在溢出效应吗——来自我国省级动态面板数据的实证分析

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财经科学 2014年第2期 114-121页

作者：冯伟徐康宁东南大学经济管理学院

本文利用我国1989-2011年省级层面的发展数据,在基于DEA法测算各地区的全要素生产率及其效率改进和技术进步分解内容的基础上,采用动态面板数据分析方法,实证检验了外商直接投资与我国各地区生产率之间的作用关系,研究发现:从总体上来说... 详细信息

本文利用我国1989-2011年省级层面的发展数据,在基于DEA法测算各地区的全要素生产率及其效率改进和技术进步分解内容的基础上,采用动态面板数据分析方法,实证检验了外商直接投资与我国各地区生产率之间的作用关系,研究发现:从总体上来说,外商直接投资对地区发展存在着溢出效应,只不过这种溢出效应具有综合性和空间异质性的特征;在区域层面上,技术进步上的溢出效应主要来源于东、中部地区,而对于全要素生产率来说主要源于东部地区。在此基础上,本文给出了相应的对策建议。

关键词：外商直接投资全要素生产率溢出效应

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市场规模、劳动力成本与外商直接投资:基于我国1990—2009年省级面板数据的研究

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南开经济研究 2011年第6期 3-20页

作者：冯伟邵军徐康宁东南大学经济管理学院 211189

通过理论模型分析和计量实证检验,着重研究了劳动力成本与市场规模对我国吸引FDI的影响作用,发现:劳动力成本对FDI的吸引存在着门槛效应,即在一定范围内,劳动力成本的提升能对FDI产生正向的激励作用,越过拐点值后便会产生阻滞作用;市场... 详细信息

通过理论模型分析和计量实证检验,着重研究了劳动力成本与市场规模对我国吸引FDI的影响作用,发现:劳动力成本对FDI的吸引存在着门槛效应,即在一定范围内,劳动力成本的提升能对FDI产生正向的激励作用,越过拐点值后便会产生阻滞作用;市场规模对FDI的吸引存在着规模报酬递增性,即不断扩增的市场规模能引致FDI的乘数效应,带来数倍于自身的增长作用,是保障FDI可持续性引进的有效路径;劳动力成本与市场规模在共同作用于吸引FDI的过程中存在着替代性,这可以为各省区市有效地、持续性地引进FDI提供政策启示。

关键词：劳动力成本市场规模外商直接投资

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水下自护混凝土与钢筋握裹力试验研究

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水资源与水工程学报 2024年第1期35卷 162-169,176页

作者：郑宇金峰南康宁周虎清华大学水沙科学与水利水电工程国家重点实验室北京100084 陕西省东庄水利枢纽工程建设有限公司陕西西安713200

随着水下自护混凝土技术的推广和应用,其关键工艺参数水下保护剂浓度对水下自护钢筋混凝土结构性能的影响成为关注的热点。基于水下自护技术,在常用工作浓度范围内,对水下自护混凝土的素混凝土力学性能、混凝土与钢筋握裹力、微观孔隙... 详细信息

随着水下自护混凝土技术的推广和应用,其关键工艺参数水下保护剂浓度对水下自护钢筋混凝土结构性能的影响成为关注的热点。基于水下自护技术,在常用工作浓度范围内,对水下自护混凝土的素混凝土力学性能、混凝土与钢筋握裹力、微观孔隙结构开展了试验研究。试验结果表明:在不同水下保护剂浓度下,水下自护素混凝土抗压强度水陆强度比均超过80%;混凝土与钢筋握裹力水陆强度比约在40%~65%,水下保护剂浓度越高,混凝土与钢筋握裹力水陆强度比越低;混凝土基质区域孔隙率和混凝土与钢筋握裹力存在负相关关系;水下保护剂能够有效提升水下自护混凝土的力学性能,但水下保护剂浓度的提升会对混凝土与钢筋握裹力强度造成不利影响。因此,合理选择水下保护剂浓度并增加钢筋用量是提升水下自护钢筋混凝土工程的可靠性的重要举措。

关键词：水下自护混凝土水下保护剂钢筋混凝土工程混凝土与钢筋握裹力压汞试验

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出口、对外投资与中国国家形象:来自拉丁美洲的证据

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国际贸易问题 2019年第2期 15-28页

作者：刘峰徐康宁王美昌东南大学经济管理学院

改革开放以来,中国对以开放促发展的道路进行了全面的探索,"走出去"战略的提出,加快了中国资本走出国门的步伐。国家形象作为"软实力"建设的重要一环,是否会受到越来越活跃的对外经济活动的影响,如何在不断扩大对外经济活动的同时塑造... 详细信息

改革开放以来,中国对以开放促发展的道路进行了全面的探索,"走出去"战略的提出,加快了中国资本走出国门的步伐。国家形象作为"软实力"建设的重要一环,是否会受到越来越活跃的对外经济活动的影响,如何在不断扩大对外经济活动的同时塑造一个良好的国家形象?本文使用Latinobarómetro所提供的涵盖18个拉美国家的微观调查数据,尝试对这一问题做出回答。通过实证模型的检验,结果发现:中国出口的增加会降低东道国对于中国国家形象的评价,但影响程度较小,而对外投资则对中国国家形象有正向影响。通过加入表征个体特征变量与核心变量的交互项,文章发现受教育水平越高、经济条件越好以及具备学生身份的群体随着中国在东道国经济活动的增强,对于中国国家形象的评价会越高。分行业来看,初级产品部门的出口活动所引致的对于中国国家形象的负面评价最为显著;从具体的职业划分来看,无论是中国的出口总额、出口种类还是对外投资,对东道国个体经营者造成的影响相对于工薪阶层要更加显著。

关键词：国家形象出口对外投资拉丁美洲软实力

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袁樊与鉴真社及安定珂罗版社

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中国国家博物馆馆刊 2019年第3期 127-139页

作者：叶康宁南京艺术学院博士后流动站南京210013

1940年代是中国珂罗版发展的黄金时代,以鉴真社为代表的珂罗版出版机构,以"保存文献""发扬国光"相号召,鼓荡起美术出版的热潮。与鉴真社的情况类似的珂罗版出版机构还有古物同欣社、昌艺社等。它们有一个共同特点,就是没有专属的制版印... 详细信息

1940年代是中国珂罗版发展的黄金时代,以鉴真社为代表的珂罗版出版机构,以"保存文献""发扬国光"相号召,鼓荡起美术出版的热潮。与鉴真社的情况类似的珂罗版出版机构还有古物同欣社、昌艺社等。它们有一个共同特点,就是没有专属的制版印刷设备。它们的工作主要是选材和编辑,然后委托珂罗版作坊制版印刷。鉴真社创办人袁樊在商界谋生活,早年受张謇知遇,又曾从俞宗海、王同愈、吴梅、冯超然游。结交人物既有文苑班头,亦不乏商界大佬。鉴真社的业务范围包括印刷、发行、设计、审查、代售五类。几乎所有鉴真社的出版物上,都印有"上海鉴真社经理安定珂罗版社",所以,很多人误以为鉴真社创办了安定珂罗版社。实际并非如此,安定珂罗版社开设比鉴真社早,歇业也比鉴真社晚。通过稽考鉴真社和安定珂罗版社的创办人、创办时间及出版物,不仅可以管窥蠡测1940年代美术出版的概貌,而且有助于观察和考量科技进步对美术发展产生的影响。

关键词：袁樊鉴真社安定珂罗版社美术出版

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Endovascular therapy for Acute ischemic Stroke Trial (EAST): study protocol for a prospective, multicentre control trial in China

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Stroke & Vascular Neurology 2016年第2期1卷 44-51页

作者： Zhongrong Miao Xiaochuan Huo feng Gao Xiaoling Liao Chunjuan Wang Ya Peng Yibin Cao Shengli Chen Meng Zhang Changchun Jiang Xiaoxiang Peng Cunfeng Song Liping Wei Qiyi Zhu Zaiyu Guo Li Liu Hang Lin Hua Yang Wei Wu Hui Liang Anding Xu kangning Chen Xingquan Zhao Yuesong Pan Hao Li Liping Liu Yilong Wang Yongjun Wang EAST investigators Department of Interventional Neurology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases BeijingChina Vascular Neurology Department of NeurologyBeijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Neurology Tiantan Clinical Trial and Research Center for StrokeBeijing Tiantan HospitalCapital Medical UniversityBeijingChina Center of Stroke Beijing Institute for Brain DisordersBeijingChina Department of Neurosurgery Changzhou No 1 People’s HospitalChangzhouChina Department of Neurology Tangshan Gongren HospitalTangshanChina Department of Neurology Chongqing Sanxia Central HospitalChongqingChina Department of Neurology Daping HospitalChongqingChina Department of Neurology Baotou Central HospitalBaotouChina Department of Neurology Hubei Zhongshan HospitalWuhanChina Department of Neurology Liaocheng Third People’s HospitalLiaochengChina Department of Neurology Luoyang Central Hospital affiliated to Zhengzhou UniversityChina Department of Neurology People’s Hospital of Linyi CityChina Department of Neurology Tianjin TEDA HospitalChina Department of Neurology Chifeng Municipal HospitalChina Department of Neurology Fuzhou PLA General HospitalChina Department of Neurology Affiliated Hospital of Guiyang Medical CollegeChina Department of Neurology Qilu Hospital of Shandong UniversityChina Department of Neurology Yantai Hill HospitalChina Department of Neurology The First Affiliated Hospital of Jinan UniversityChina Department of Neurology Xinan HospitalChina Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease BeijingChina Neuro-intensive Care Unit Department of NeurologyBeijing Tiantan HospitalCapital Medical UniversityBeijingChina 不详

Background and purpose:5 recent trials have shown the benefit of endovascular treatment for acute ischaemic stroke(AIS)due to large vessel occlusion of the anterior *** study aims to evaluate the safety and efficacy of Solitaire thrombectomy in patients with moderate-to-severe stroke in the Chinese population,which has a high prevalence of intracranial *** and analysis:This multicentre prospective control study will involve 17 stroke centres in China,and plans to recruit 150 patients in the intervention group,and 150 patients in the medical group,in which patients meet enrolment criteria but refuse *** with AIS due to large vessel occlusion indicated for treatment with Solitaire stent retriever within 12 hours of symptom onset,and who meet the inclusion and exclusion criteria,will be enrolled in this *** primary efficacy endpoint is functional independence as defined by a modified Rankin Scale(mRS)score≤2 at 90 days or by functional improvement as defined by mRS,using shift *** procedural efficacy endpoint is arterial recanalisation of the occluded target vessel measured by a modified Thrombolysis in Cerebral Infarction(mTICI)score equal or superior to 2b right following the use of the study *** primary safety endpoint is symptomatic intracranial haemorrhage(sICH)within 24±3 hours *** and dissemination:The protocol was approved by the Ethics Committee at the coordinating centre and by the local Institutional Review Board of each participating *** registration number:NCT02350283.

关键词： prospective centre occlusion

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PPM调制光纤耦合多孔径接收系统性能研究

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天地一体化信息网络 2021年第2期2卷 62-68页

作者：李康宁冯旭高建文马晶中国电子科学研究院北京100041 哈尔滨工业大学航天学院黑龙江哈尔滨150001

研究空间激光通信脉冲位置调制(PPM)光纤耦合多孔径接收系统的通信性能,在Gamma-Gamma光强分布大气模型和非中心卡方分布光纤耦合效率分布模型基础上,给出PPM光纤耦合多孔径接收系统经大气链路传输的信噪比和平均误码率表达式。多孔径... 详细信息

研究空间激光通信脉冲位置调制(PPM)光纤耦合多孔径接收系统的通信性能,在Gamma-Gamma光强分布大气模型和非中心卡方分布光纤耦合效率分布模型基础上,给出PPM光纤耦合多孔径接收系统经大气链路传输的信噪比和平均误码率表达式。多孔径接收合并方式考虑了选择性合并(SC)、等增益合并(EGC)以及最大比合并(MRC)3种。通过Monte Carlo仿真,对比分析地面链路4PPM调制SC、EGC和MRC光纤耦合多孔径接收系统和等接收面积单孔径接收系统的误码率,对比研究4PPM调制和8PPM调制多孔径接收系统在不同合并方式下的误码率性能。

关键词：空间光通信大气湍流多孔径接收光纤耦合 PPM

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