检索结果-南通市图书馆

Journal of Energy Chemistry 2024年第3期90卷 496-503,I0011页

作者： Junjie Qian Jingjing He Qihang Zhang chenyue zhu Shilin Chen Zhanpeng Wei Xuesong Leng Ziren Zhou Benben Shen Yu Peng Qiang Niu Shuang Yang Yu Hou Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China National Enterprise Technology Center Inner Mongolia Erdos Electric Power and Metallurgy Group Company LimitedOrdos 016064Inner MongoliaChina

Inverted perovskite solar cells(PSCs) have attracted broad research and industrial interest owing to their suppressed hysteresis,cost-effectiveness,and easy-fabrication.However,the issue of non-radiative recombination losses at the n-type interface between the perovskite and fullerene has impeded further improvement of photovoltaic performance.Here,we modify the n-type interface of FAPbI_(3) perovskite films by constructing a stereochemical two-dimensional(2D) perovskite interlayer,in which the organic cations comprise both pyridine and ammonium groups.The pyridine N donor can create stable bonding with the surface-uncoordinated Pb on the perovskite,thereby passivating the shallow-level defects and enhancing the air stability of the film.Furthermore,the pyridine N donor also offers a positive polar interface to decrease the surface work function of the perovskite film,enabling n-type modification.Ultimately,we employ a p-i-n photovoltaic(PV) device with the positive dipole interlayer at perovskite/fullerene contact and achieve remarkable photoelectric conversion efficiency(PCE) of 22.0%.

关键词： Perovskite solar cells Dipole interlayer Stereochemistry Non-radiative recombination

Spatial identification and evaluation of rural vitality from a function-element-flow perspective: Evidence of Lin'an district in Hangzhou, China

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2024年第6期34卷 1228-1250页

作者： ZHANG Jing GUAN chenyue ZHANG Lin YU Zhoulu YE Chengxuan zhu Congmou LI Sinan WANG Ke GAN Muye Institute of Applied Remote Sensing and Information Technology College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China Zhejiang Key Research Laboratory of Agricultural Remote Sensing and Information Technology Hangzhou 310058China Shandong(Linyi)Institute of Modern Agriculture Linyi 276000ShandongChina Huzhou Spatial Planning Preparation and Research Center Huzhou 313000ZhejiangChina Zhejiang Digital Governance Space Planning and Design Co. Ltd.Hangzhou 310000China Department of Land Resources Management Zhejiang Gongshang UniversityHangzhou 310018China

Rural vitality is the life force expressed by a combination of endogenous dynamics and external influences. Exploring the complex relationship between rural functions, elements and flows could achieve sustainable rural development. This study constructed a theoretical framework guided by the four functions of production, living, ecology and culture with the support of mobile big data. Furthermore, the network centrality of villages was estimated to reflect the intensity of urban-rural social mobility ties. The results indicated marked spatial disparities in rural vitality, and the coupling of ecological-cultural vitality has a high degree of coherence. Four rural vitality grades were identified: high level(38, 14.08%), medium-high level(66, 24.44%), medium-low level(110, 40.74%) and low level(56, 20.74%), covering 270 administrative village units. The flow intensity of social linkage elements is consistent with rural vitality and the socioeconomic spillover effect of urban centers on neighboring villages was noticeable. Topographic complexity negatively affected the living function, mainly in the T1 and T2 terrain gradients;the rural ecological function was not fully correlated with urban adjacency, and proximity could lead to adverse effects such as urban sprawl and resource destruction. The application of this study is to explore the importance of “flow” by utilizing mobile big data to refine the evaluation unit to the village scale. Accelerating the construction of network coverage and information interconnection and promoting the elemental flow of people, transportation and information between urban and rural areas are important ways to enhance rural vitality.

关键词： rural vitality rural multifunction elements urban-rural flows mobile big data

网络口碑对消费者购买意愿的影响——以茶产品为例

在线全文

学校读者我要写书评

暂无评论

管理科学与研究（中英文版） 2022年第11期11卷 103-106页

作者：朱晨月南京林业大学江苏南京

网络口碑是消费者进行线上购物的关键影响因素,越来越多的商家开始注重口碑营销。本文将网络口碑细分为四个维度,以顾客信任为中介研究网络口碑对于消费者购买茶产品意愿的作用机制。结果表明:第一,网络口碑数量越多,顾客信任程度越高,... 详细信息

网络口碑是消费者进行线上购物的关键影响因素,越来越多的商家开始注重口碑营销。本文将网络口碑细分为四个维度,以顾客信任为中介研究网络口碑对于消费者购买茶产品意愿的作用机制。结果表明:第一,网络口碑数量越多,顾客信任程度越高,购买意愿也更强烈。第二,网络口碑评分值会负向影响消费者购买意愿。同时,顾客信任在网络口碑评分值和消费者购买意愿间是部分中介。第三,主观性评论比例对消费者购买意愿无明显作用,但是顾客信任在主观性网络口碑比例和消费者购买意愿间有中介作用,说明这是一个完全中介模型。第四,网络口碑评论长度正向影响顾客信任和消费者购买意愿。

关键词：网络口碑消费者购买意愿茶产品

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于氧化铟锡主动超表面的相位调制

激光与光电子学进展 2022年第4期59卷 38-44页

作者：高峰朱晨岳李景悦吴春艳罗林保合肥工业大学电子科学与应用物理学院安徽合肥230601

透明导电氧化物由于特殊的光学性能,已经被广泛地运用于光电器件中。在近红外波长范围内,其介电常数实部将从正转变为负。在介电常数近零(ENZ)区域中,光与物质之间将产生强相互作用,由此将有望实现较宽的相位调制。采用基于氧化铟锡(ITO... 详细信息

透明导电氧化物由于特殊的光学性能,已经被广泛地运用于光电器件中。在近红外波长范围内,其介电常数实部将从正转变为负。在介电常数近零(ENZ)区域中,光与物质之间将产生强相互作用,由此将有望实现较宽的相位调制。采用基于氧化铟锡(ITO)的金属-氧化物-半导体电容器(MOS)结构,通过施加0~5 V的偏置电压,对界面附近1 nm厚度内的载流子浓度进行调制,实现了在1470 nm处的接近265°的相位调控。在相位调制的基础上,探索了该结构在光束偏转和聚焦方面的实际应用。此外,双栅型MOS结构的设计进一步拓宽了相位覆盖的范围。

关键词：超表面透明导电氧化物介电常数近零材料场效应调制

Predictability and skill of convection-permitting ensemble forecast systems in predicting the record-breaking“21·7”extreme rainfall event in Henan Province,China

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2022年第10期65卷 1879-1902页

作者： Kefeng zhu chenyue ZHANG Ming XUE Nan YANG Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210041China Key Laboratory of Mesoscale Severe Weather/Ministry of Education and School of Atmospheric Sciences Nanjing UniversityNanjing 210093China Center for Analysis and Prediction of Storms and School of Meteorology University of Oklahoma Norman Oklahoma 73072USA

During 19–21 July 2021,an extreme rainfall event occurred in Henan Province,China,during which a recordbreaking maximum hourly rainfall of 201.9 mm was recorded in Zhengzhou at 09 UTC July 20.In this study,the predictability of this extreme rainfall event is investigated using two convection-permitting ensemble forecast systems(CEFSs):one initialized from NCEP GEFS(named CEFS_GEFS)and the other initialized from time-lagged ERA5 data(named CEFS_ERA).Both are able to reproduce the daily heavy rainfall along the Taihang Mountains,but most members have significant position biases for the extreme rainfall in Zhengzhou.For the hourly rainfall,a few members are able to capture the evolution and propagation of extreme rainfall.However,all ensemble members underestimate the extreme hourly rainfall and have position errors of a few tens to a few hundreds of kilometers.Such results suggest that the predictability of the extreme hourly rainfall at the accuracy of city scale in Zhengzhou is low,especially by deterministic forecasting models,and the occurrence of the extreme requires many favorable conditions to happen simultaneously.In terms of the Brier score,CEFS_GEFS performs better than CEFS_ERA.The latter lacks spread,especially in regions with scarce rain,resulting in less dispersion in precipitation distributions and larger probability forecast error.When a neighborhood is applied,the probability of precipitation(POP)is significantly increased over Zhengzhou.While the traditional POP shows almost no skill for hourly rainfall≥25 mm h-1,the neighborhood POP significantly improves the forecast skill score,for both daily and hourly rainfall,suggesting higher predictability when spatial error among the ensemble members is allowed.

关键词： Convective-permitting ensemble forecasts Neighborhood precipitation probability Extreme rainfall

福建省主要乔木树种森林可燃物元素含量与燃烧释放PM_(2.5)中元素含量相关性分析

在线全文

学校读者我要写书评

暂无评论

生态学杂志 2024年第2期43卷 333-341页

作者：郑陈悦林海川詹笑宇黄紫颜马远帆郑文霞朱忠盼郭福涛福建农林大学林学院福州350002 海峡两岸红壤区水土保持协同创新中心福州350002

探究森林可燃物与燃烧产生的细小颗粒物(PM_(2.5))中的元素含量及其相关性,以揭示林火过程中各元素迁移轨迹,为理解森林火灾对环境化学元素含量和生态系统物质循环的影响提供重要依据。以马尾松(Pinus massoniana)、杉木(Cunninghamia l... 详细信息

探究森林可燃物与燃烧产生的细小颗粒物(PM_(2.5))中的元素含量及其相关性,以揭示林火过程中各元素迁移轨迹,为理解森林火灾对环境化学元素含量和生态系统物质循环的影响提供重要依据。以马尾松(Pinus massoniana)、杉木(Cunninghamia lanceolata)、大叶桉(Eucalyptus robusta)和香樟(Cinnamomum camphora)的树枝、树叶以及树皮3个不同部位器官为研究对象,采用自主设计的模拟燃烧装置进行室内阴、明燃两种不同燃烧状态模拟燃烧,测算5种常量元素Mg、Al、P、K、Ca及7种微量元素Na、Cr、Mn、Fe、Ni、Cu、Zn的含量,同时比较阴、明燃情况下排放PM2.5中元素含量的差异,并分析森林可燃物自身元素含量与各元素排放因子的相关性。结果表明:森林可燃物中常量元素Mg、K、Ca和微量元素Zn含量高,森林可燃物元素含量针叶树高于阔叶树,不同器官元素含量差异显著;燃烧释放PM2.5中Mg、K、Ca、Zn排放因子较高,Cu次之,Cr最少,常量元素高于微量元素;不同燃烧状态下对排放因子也存在一定的影响,普遍表现为明燃大于阴燃;不同燃烧状态下,各器官释放PM_(2.5)与自身元素含量的比值中,Cu元素最高,其他元素占比范围在0~0.09%;森林可燃物与PM_(2.5)的元素间相关性较大,相关水平达0.700~0.999。不同森林可燃物器官燃烧释放烟气及PM_(2.5)存在差异,且森林可燃物自身与燃烧释放颗粒物PM_(2.5)具有较强的相关性。

关键词：森林可燃物 PM_(2.5) 燃烧状态林火

Macrophage membrane-biomimetic adhesive polycaprolactone nanocamptothecin for improving cancer-targeting efficiency and impairing metastasis

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2023年第2期20卷 449-462页

作者： Kangkang Ying Yifeng zhu Jianqin Wan chenyue Zhan Yuchen Wang Binbin Xie Peirong Xu Hongming Pan Hangxiang Wang The First Affiliated Hospital NHC Key Laboratory of Combined Multi-Organ TransplantationZhejiang University School of MedicineHangzhouZhejiang Province310003PR China Jinan Microecological Biomedicine Shandong Laboratory JinanShandong Province250117PR China Department of Hepatobiliary Surgery The First Affiliated HospitalWenzhou Medical UniversityWenzhouZhejiang Province325000PR China Department of Medical Oncology Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhouZhejiang Province310016PR China Department of Chemical Engineering Zhejiang UniversityHangzhouZhejiang Province310027PR China

The recent remarkable success and safety of mRNA lipid nanoparticle technology for producing severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)vaccines has stimulated intensive efforts to expand nanoparticle strategies to treat various diseases.Numerous synthetic nanoparticles have been developed for pharmaceutical delivery and cancer treatment.However,only a limited number of nanotherapies have enter clinical trials or are clinically approved.Systemically administered nanotherapies are likely to be sequestered by host mononuclear phagocyte system(MPS),resulting in suboptimal pharmacokinetics and insufficient drug concentrations in tumors.Bioinspired drug-delivery formulations have emerged as an alternative approach to evade the MPS and show potential to improve drug therapeutic efficacy.Here we developed a biodegradable polymer-conjugated camptothecin prodrug encapsulated in the plasma membrane of lipopolysaccharide-stimulated macrophages.Polymer conjugation revived the parent camptothecin agent(e.g.,7-ethyl-10-hydroxy-camptothecin),enabling lipid nanoparticle encapsulation.Furthermore,macrophage membrane cloaking transformed the nonadhesive lipid nanoparticles into bioadhesive nanocamptothecin,increasing the cellular uptake and tumor-tropic effects of this biomimetic therapy.When tested in a preclinical murine model of breast cancer,macrophage-camouflaged nanocamptothecin exhibited a higher level of tumor accumulation than uncoated nanoparticles.Furthermore,intravenous administration of the therapy effectively suppressed tumor growth and the metastatic burden without causing systematic toxicity.Our study describes a combinatorial strategy that uses polymeric prodrug design and cell membrane cloaking to achieve therapeutics with high efficacy and low toxicity.This approach might also be generally applicable to formulate other therapeutic candidates that are not compatible or miscible with biomimetic delivery carriers.

关键词： Polymer prodrug Macrophage membrane Cancer nanomedicine Antimetastasis Nanocamptothecin

On the Key Dynamical Processes Supporting the 21.7 Zhengzhou Record-breaking Hourly Rainfall in China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2023年第3期40卷 337-349页

作者： Peng WEI Xin XU Ming XUE chenyue ZHANG Yuan WANG Kun ZHAO Ang ZHOU Shushi ZHANG Kefeng zhu Key Laboratory of Mesoscale Severe Weather/Ministry of Education and School of Atmospheric Sciences Nanjing UniversityNanjing 210023China Center for Analysis and Prediction of Storms and School of Meteorology University of OklahomaNormanOklahoma 73072USA Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210041China

An extremely heavy rainfall event occurred in Zhengzhou,China,on 20 July 2021 and produced an hourly rainfall rate of 201.9 mm,which broke the station record for China's Mainland.Based on radar observations and a convection-permitting simulation using the WRF-ARW model,this paper investigates the multiscale processes,especially those at the mesoscale,that support the extreme observed hourly rainfall.Results show that the extreme rainfall occurred in an environment characteristic of warm-sector heavy rainfall,with abundant warm moist air transported from the ocean by an abnormally northward-displaced western Pacific subtropical high and Typhoon In-Fa(2021).However,rather than through back building and echo training of convective cells often found in warm-sector heavy rainfall events,this extreme hourly rainfall event was caused by a single,quasi-stationary storm in Zhengzhou.Scale separation analysis reveals that the extreme-rainproducing storm was supported and maintained by the dynamic lifting of low-level converging flows from the north,south,and east of the storm.The low-level northerly flow originated from a mesoscale barrier jet on the eastern slope of the Taihang Mountain due to terrain blocking of large-scale easterly flows,which reached an overall balance with the southerly winds in association with a low-level meso-β-scale vortex located to the west of Zhengzhou.The large-scale easterly inflows that fed the deep convection via transport of thermodynamically unstable air into the storm prevented the eastward propagation of the weak,shallow cold pool.As a result,the convective storm was nearly stationary over Zhengzhou,resulting in record-breaking hourly precipitation.

关键词： extreme rainfall multiscale processes orography barrier jet low-level mesoscale vortex

PtNi-W/C with Atomically Dispersed Tungsten Sites Toward Boosted ORR in Proton Exchange Membrane Fuel Cell Devices

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第9期15卷 238-256页

作者： Huawei Wang Jialong Gao Changli Chen Wei Zhao Zihou Zhang Dong Li Ying Chen chenyue Wang Cheng zhu Xiaoxing Ke Jiajing Pei Juncai Dong Qi Chen Haibo Jin Maorong Chai Yujing Li Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China State Power Investment Corporation Hydrogen Energy Company LimitedBeijing 102209People’s Republic of China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124People’s Republic of China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049People’s Republic of China

The performance of proton exchange membrane fuel cells is heavily dependent on the microstructure of electrode catalyst especially at low catalyst loadings.This work shows a hybrid electrocatalyst consisting of PtNi-W alloy nanocrystals loaded on carbon surface with atomically dispersed W sites by a two-step straightforward method.Single-atomic W can be found on the carbon surface,which can form protonic acid sites and establish an extended proton transport network at the catalyst surface.When implemented in membrane electrode assembly as cathode at ultra-low loading of 0.05 mgPt cm^(−2),the peak power density of the cell is enhanced by 64.4%compared to that with the commercial Pt/C catalyst.The theoretical calculation suggests that the single-atomic W possesses a favorable energetics toward the formation of*OOH whereby the intermediates can be efficiently converted and further reduced to water,revealing a interfacial cascade catalysis facilitated by the single-atomic W.This work highlights a novel functional hybrid electrocatalyst design from the atomic level that enables to solve the bottle-neck issues at device level.

关键词： Fuel cells Membrane electrode assembly PGM catalyst Synergistic catalysis Oxygen reduction

经皮后路内镜下颈椎间盘髓核摘除术的疗效及其对颈椎矢状面形态学的影响

在线全文

学校读者我要写书评

暂无评论

江苏医药 2021年第6期47卷 566-571页

作者：朱承跃许锦超陈笔峰潘浩朱杭胡庆丰杭州市中医院骨伤科浙江310007 浦江县中医院

目的探讨经皮后路内镜下颈椎间盘髓核摘除术(PPECD)治疗神经根型颈椎病(CSR)的临床疗效及其对颈椎矢状面形态学的影响。方法采用PPECD治疗37例软性椎间盘突出和/或椎间孔狭窄的CSR患者。术前和术后3个月采用Macnab标准评定手术疗效,颈... 详细信息

目的探讨经皮后路内镜下颈椎间盘髓核摘除术(PPECD)治疗神经根型颈椎病(CSR)的临床疗效及其对颈椎矢状面形态学的影响。方法采用PPECD治疗37例软性椎间盘突出和/或椎间孔狭窄的CSR患者。术前和术后3个月采用Macnab标准评定手术疗效,颈椎功能障碍指数(NDI)评估颈椎功能状态,VAS疼痛评分评价颈肩部和上肢部疼痛程度,观察影像学指标手术节段椎间盘角α、脊柱功能单位(FSU)角β、C_(2)~C_(7) Cobb角γ、矢状面轴向垂直距离(C_(2)~C_(7) SVA)、T_1倾斜角(T1S)、颈部倾斜角(NT)和椎间隙高度的变化。结果 37例患者均成功完成手术,术中未出现神经和血管损伤。术后1例患者出现患侧拇、示、中指伸直受限,对症治疗12周后略有改善。疗效优良率91.9%。与术前相比,术后3个月时椎间盘角α、FSU角β、C_(2)~C_(7) Cobb角γ和NT均增大,VAS疼痛评分、NDI、T1S和C_(2)~C_(7) SVA均减小(P0.05)。结论 PPECD治疗CSR不仅临床疗效显著,还能改善颈椎的矢状面形态。

关键词：神经根型颈椎病椎间孔镜手术颈椎矢状面形态