检索结果-南通市图书馆

Molecular packing tuning via chlorinated end group enables efficient binary organic solar cells over 18.5%

Carbon Energy 2024年第3期6卷 196-203页

作者： Yafeng Li zhenyu chen Xingzheng Yan Ziyi Ge Zhejiang Business Technology Institute NingboZhejiangChina Zhejiang Engineering Research Center for Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiangChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina

Designing novel nonfullerene acceptors(NFAs)is of vital importance for the development of organic solar cells(OSC).Modification on the side chain and end group are two powerful tools to construct efficient ***,based on the high-performance L8BO,we selected 3-ethylheptyl to substitute the inner chain of 2-ethylhexyl,obtaining the backbone of *** we introduced different halogen atoms of fluorine and chlorine on 2-(3-oxo-2,3-dihydro-1Hinden-1-ylidene)malononitrile end group(EG)to construct efficient NFAs named BON3-F and BON3-Cl,*** donor D18 was chosen to combine with two novel NFAs to construct OSC ***,D18:BON3-Cl-based device shows a remarkable power conversion efficiency(PCE)of 18.57%,with a high open-circuit voltage(V_(OC))of 0.907 V and an excellent fill factor(FF)of 80.44%,which is one of the highest binary PCE of devices based on D18 as the ***,BON3-F-based device shows a relatively lower PCE of 17.79%with a decreased FF of 79.05%.The better photovoltaic performance is mainly attributed to the red-shifted absorption,higher electron and hole mobilities,reduced charge recombination,and enhanced molecular packing in the D18:BON3-Cl ***,we performed stability tests on two binary systems;the D18:BON3-Cl and D18:BON3-F devices maintain 88.1%and 85.5%of their initial efficiencies after 169 h of storage at 85°C in an N2-filled glove box,*** work demonstrates the importance of selecting halogen atoms on EG and provides an efficient binary system of D18:BON3-Cl for further improvement of PCE.

关键词： binary organic solar cell chlorinated end group molecular packing

来源：

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

Source Enrichment Control on the Scale of Magmatic-Hydrothermal W-Sn Mineralization:Insights from Triassic and Jurassic Magma Reservoirs in the Continental Crust,Xitian,South China

引用

Acta Geologica Sinica(English Edition) 2024年第1期98卷 132-149页

作者： GUO Chunli Simon AWILDE Coralie SIEGEL chen zhenyu WU Shichong MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China SinoProbe Laboratory Chinese Academy of Geological SciencesBeijing 100094China School of Earth and Planetary Sciences Curtin UniversityPerth 6845Australia Discovery Program Mineral ResourcesCommonwealth Scientific and Industrial Research OrganisationAustralian Resources Research CentrePerth 6151Australia No.416 Geological Group Hunan Bureau of Mineral Exploration and DevelopmentZhuzhouHunan 412007China

There are two factors,source composition and magmatic differentiation,potentially controlling W-Sn *** one is more important is widely debated and may need to be determined for each individual *** Xitian granite batholith located in South China is a natural laboratory for investigating the above *** consists essentially of two separate components,formed in the Triassic at ca.226 Ma and Jurassic at ca.152 Ma,*** Triassic and Jurassic rocks are both composed of porphyritic and fine-grained *** latter resulted from highlydifferentiated porphyritic ones but they have similar textural characteristics and mineral assemblages,indicating that they reached a similar degree of crystal *** both fine-grained phases are highly differentiated with elevated rare metal contents,economic W–Sn mineralization is rare in the Triassic granitoids and this can be attributed to less fertile source materials than their Jurassic counterparts,with a slightly more enriched isotopic signature and whole-rockεNd(226 Ma)of−10.4 to−9.2(2σ=0.2)compared withεNd(152 Ma)of−9.2 to−8.2(2σ=0.2)for the Jurassic *** initial W-Sn enrichment was derived from the metasedimentary rocks and strongly enhanced by reworking of the continental crust,culminating in the Jurassic.

关键词： W-Sn mineralization magma reservoir geometry crystal fractionation Xitian Triassic-Jurassic granitic batholith Nanling Range South China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

引用

Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： zhenyu chen Xue-Jun Li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Improving actionable warning identification via the refined warning-inducing context representation

引用

Science China(Information Sciences) 2024年第5期67卷 321-322页

作者： Xiuting GE Chunrong FANG Xuanye LI Quanjun ZHANG Jia LIU Zhihong ZHAO zhenyu chen State Key Laboratory for Novel Software Technology Nanjing University

Static analysis tools(SATs) have shown potential ability in software quality assurance [1]. However, SATs report an overwhelming number of warnings, where most warnings are unactionable ones(i.e., warnings that are not acted on or fixed by developers). It is not a trivial task for developers to find actionable warnings(i.e., warnings that are acted on and fixed by developers) in all reported warnings. Hence,the excessive unactionable warnings seriously impede the usability of SATs [2].

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

End-group modulation of phenazine based non-fullerene acceptors for efficient organic solar cells with high open-circuit voltage

引用

Journal of Energy Chemistry 2024年第1期88卷 461-468,I0011页

作者： Yahui Zhang Yafeng Li Ruixiang Peng Yi Qiu Jingyu Shi zhenyu chen Jinfeng Ge Cuifen Zhang Zheng Tang Ziyi Ge School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Zhejiang Business Technology Institute Ningbo 315012ZhejiangChina Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201ZhejiangChina Center for Advanced Low-dimension Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Phenazine-based non-fullerene acceptors(NFAs)have demonstrated great potential in improving the power conversion efficiency(PCE)of organic solar cells(OSCs).Halogenation is known to be an effective strategy for increasing optical absorption,refining energy levels,and improving molecular packing in organic ***,a series of NFAs(Pz IC-4H,Pz IC-4F,Pz IC-4Cl,Pz IC-2Br)with phenazine as the central core and with/without halogen-substituted(dicyanomethylidene)-indan-1-one(IC)as the electron-accepting end group were synthesized,and the effect of end group matched phenazine central unit on the photovoltaic performance was systematically *** photophysical and morphological analyses revealed that the PM6:Pz IC-4F blend involves efficient exciton dissociation,higher charge collection and transfer rates,better crystallinity,and optimal phase ***,OSCs based on PM6:Pz IC-4F as the active layer exhibited a PCE of 16.48%with an open circuit voltage(Voc)and energy loss of 0.880 V and 0.53 e V,***,this work demonstrated a promising approach by designing phenazine-based NFAs for achieving high-performance OSCs.

关键词： Organic solar cells Non-fullerene acceptor Phenazine Central core End group

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Highly efficient ternary organic solar cells with excellent open-circuit voltage and fill factor via precisely tuning molecular stacking and morphology

引用

Science China Chemistry 2024年第3期67卷 963-972页

作者： Dinghong Sun zhenyu chen Jianfeng Zhang Wei Song Jingyu Shi Jintao Zhu Yuanyuan Meng Fei Jin Shuncheng Yang Ziyi Ge Faculty of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315211China Faculty of Material Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049China Department of Chemical and Environmental Engineering University of Nottingham NingboNingbo 315100China

The micro-morphology and molecular stacking play a key role in determining the charge transport process and nonradiative energy loss, thus impacting the performances of organic solar cells(OSCs). To address this issue, a non-fullerene acceptor PhC6-IC-F with alkylbenzene side-chain, possessing optimized molecular stacking, complementary absorption spectra and forming a cascade energy level alignment in the PM6:BTP-eC9 blend, is introduced as guest acceptor to improve efficiency of ternary OSCs. The bulky phenyl in the side-chain can regulate crystallinity and optimizing phase separation between receptors in ternary blend films, resulting in the optimal phase separations in the ternary films. As a result, high efficiencies of 18.33% as photovoltaic layer are obtained for PhC6-IC-F-based ternary devices with excellent fill factor(FF) of 78.92%. Impressively, the ternary system produces a significantly improved open circuit voltage(V_(oc)) of 0.857 V compared with the binary device,contributing to the reduced density of trap states and suppressed non-radiative recombination result in lower energy loss. This work demonstrates an effective approach for adjusting the aggregation, molecular packing and fine phase separation morphology to increase V_(oc) and FF, paving the way toward high-efficiency OSCs.

关键词： alkylbenzene side-chain morphology regulation ternary blends organic solar cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Blood glucose-lowering activity of protocatechuic acid is mediated by inhibiting a-glucosidase

引用

Food Science and Human Wellness 2024年第3期13卷 1212-1219页

作者： Huafang Ding Shouhe Huang Chui Yiu Chook Erika Kwek Chi Yan Kaying Ma Jianhui Liu Hanyue Zhu zhenyu chen Food&Nutritional Sciences Programme School of Life SciencesThe Chinese University of Hong KongHong Kong 999077China

α-Glucosidase inhibitors are effective in controlling postprandial hyperglycemia,which play crucial roles in the management of type 2 *** acid(PCA)is one of phenolic acids existing not only in various plant foods but also as a major microbial metabolite of dietary anthocyanins in the large *** present study investigated the inhibitory mechanism of PCA on a-glucosidase in vitro and examined its effect on postprandial blood glucose levels in *** from in vitro experiments demonstrated that PCA was a mix-type inhibitor of *** by hydrogen bonds and van der Waals interactions,PCA reversibly bound withα-glucosidase to form a stable a-glucosidase-PCA complex in a spontaneous *** computational simulation found that PCA could insert into the active cavity of a-glucosidase and establish hydrogen bonds with catalytic amino acid *** binding aroused the steric hindrance for substrates to enter active sites and caused the structural changes of interacted catalytic amino acid *** also exhibited postprandial hypoglycemic capacity in diabetic *** study may provide the theoretical basis for the application of PCA as an active ingredient of functional foods in dietary management of diabetes.

关键词： Protocatechuic acid α-Glucosidase Postprandial hyperglycemia Inhibition mechanism

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

社会的实践构成:莱克维茨实践理论的洞见与不足

引用

浙江学刊 2024年第3期 13-24,F0002,238页

作者：郑作彧陈振宇南京大学社会学院南京210023

近年来,在莱克维茨的努力下,实践理论被引入社会学中并被改造成一套“社会实践学”理论,推动了社会理论的实践学转向。本文以莱克维茨的实践理论为中心,通过对实践理论之渊源的系统梳理,并同古典社会理论中的“经济人”和“社会人”行... 详细信息

近年来,在莱克维茨的努力下,实践理论被引入社会学中并被改造成一套“社会实践学”理论,推动了社会理论的实践学转向。本文以莱克维茨的实践理论为中心,通过对实践理论之渊源的系统梳理,并同古典社会理论中的“经济人”和“社会人”行动理论以及现代社会理论中的心智主义、文本主义和主体间性理论相比较,呈现一种新近兴起的社会本体论及其反映的社会学之实践学转向。但同时莱克维茨的实践理论由于被过度抬升到社会本体论的高度,也产生不少弊端,值得我们后续讨论。

关键词：实践实践转向社会实践学莱克维茨

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

正/反预期触发语的比较研究——以合理性“按说”和常规性“一般说(来)”为例

引用

语言教学与研究 2024年第2期 75-86页

作者：陈振宇张嘉卉复旦大学中国语言文学系 200433

“正/反预期标记”和“正/反预期触发语”都是表征预期性的语词,但二者有着重要区别。本文认为“一般说(来)”是正预期触发语,偶尔有反预期的情况;“按说”是反预期触发语,偶尔有正预期的情况。接着对比考察了二者的语篇配置,以找出“正... 详细信息

“正/反预期标记”和“正/反预期触发语”都是表征预期性的语词,但二者有着重要区别。本文认为“一般说(来)”是正预期触发语,偶尔有反预期的情况;“按说”是反预期触发语,偶尔有正预期的情况。接着对比考察了二者的语篇配置,以找出“正/反预期触发语”的异同。“按说”主要用于回溯,偶尔用于断言;“一般说(来)”则基本用于断言。“按说”和“一般说(来)”分别是“常理预期”下合理性和常规性的代表,二者的语用差异源于对合理性与常规性的认知差异。

关键词：正/反预期触发语 “按说” “一般说(来)” 回溯断言合理性常规性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

以第二产程中经会阴超声所测进展角预测分娩方式:Meta分析

引用

中国医学影像技术 2024年第5期40卷 752-757页

作者：刘森陈震宇邢艳菲北部战区总医院锦州医科大学研究生培养基地辽宁沈阳110003 北部战区总医院和平院区妇产科辽宁沈阳110003 咸阳市中心医院妇产科陕西咸阳712000

目的采用meta分析观察以经会阴超声于第二产程所测进展角(AOP)预测分娩方式的价值。方法检索数据库中2018年1月1日—2023年8月31日收录的有关第二产程超声测量AOP以预测分娩方式的中英文相关文献,由2名研究者根据纳入、排除标准筛选文... 详细信息

目的采用meta分析观察以经会阴超声于第二产程所测进展角(AOP)预测分娩方式的价值。方法检索数据库中2018年1月1日—2023年8月31日收录的有关第二产程超声测量AOP以预测分娩方式的中英文相关文献,由2名研究者根据纳入、排除标准筛选文献并提取资料,评估以经会阴超声于第二产程所测AOP预测分娩方式的价值;以诊断试验质量评价工具-2(QUADAS-2)评价纳入文献的质量。结果最终纳入11篇研究、2315名产妇。meta分析显示,在第二产程中以经会阴超声所测AOP预测分娩方式的合并敏感度(Sen)、合并特异度(Spe)、合并阳性似然比(+LR)、合并阴性似然比(-LR)及合并诊断比值比(DOR)分别为0.80[95%CI(0.76,0.83)]、0.83[95%CI(0.78,0.88)]、4.8[95%CI(3.5,6.6)]、0.24[95%CI(0.20,0.29)]及20[95%CI(13,30)];其汇总受试者工作特征曲线下面积为0.88。结论在第二产程中以经会阴超声所测AOP预测分娩方式的效能较好,可作为能否自然分娩成功的预测指标。

关键词：产程,第二接生,产科超声检查荟萃分析

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：