检索结果-南通市图书馆

Electromagnetic Properties of yiG Polycrystalline Ceramics Fabricated by Tape-casting Method

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2021年第7期40卷 892-900,839页

作者： ZHAO Chong YE Wang-Gui LI ying-Kui SHEN Xiao-Fei CAO Zhi-Jun CAO Zhi-Quan WEN Zi-Cheng yuan xuan-yi MA Chao-Yang CAO Yong-Ge Department of Physics Renmin University of ChinaBeijing 100872China Songshan Lake Materials Laboratory Dongguan 523808China University of Virginia CharlottesvilleVA 22904USA New York University New YorkNY 10003USA Institute of Physics Chinese Academy of SciencesBeijing 100190China

Pure phase Y_(3)Fe_(5)O_(12)(yiG)ceramic was successfully produced by tape-casting forming process and one-step solid-state sintering *** activation energy for densification was calculated to be 183.81 kJ/*** yiG ceramic with a relative density as high as 99.8%was *** existence of O vacancy and Fe^(2+)ions was determined by XPS and EPR *** RT saturation magnetization was measured to be 28.2 emu/g,and the hysteresis loss was calculated to be smaller than 10 mJ/kg in the temperature range of 230~360 K and be as high as 238.8 mJ/kg at 30 *** dielectric loss tangent tanδ_(ε)was nearly zero at 6~7 GHz and 11~12 *** complex permeability in the frequency range of 5~18 GHz,the magnetic loss tangent tanδ_(μ)fluctuated at around ***,the low values of tanδ_(ε)and tanδ_(μ)indicate that it is a low loss ceramic material.

关键词： yiG ceramic tape-casting microwave hysteresis loss magnetodielectric ceramic

Multi-Stage Voltage Control Optimization Strategy for Distribution Networks Considering Active-Reactive Co-Regulation of Electric Vehicles

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2025年第1期122卷 221-242页

作者： Shukang Lyu Fei Zeng Huachun Han HuiyuMiao yi Pan Xiaodong yuan Electric Power Research Institute State Grid Jiangsu Electric Power Co.Ltd.Nanjing211103China

The high proportion of uncertain distributed power sources and the access to large-scale random electric vehicle(EV)charging resources further aggravate the voltage fluctuation of the distribution network,and the existing research has not deeply explored the EV active-reactive synergistic regulating characteristics,and failed to realize themulti-timescale synergistic control with other regulatingmeans,For this reason,this paper proposes amultilevel linkage coordinated optimization strategy to reduce the voltage deviation of the distribution ***,a capacitor bank reactive power compensation voltage control model and a distributed photovoltaic(PV)activereactive power regulationmodel are ***,an external characteristicmodel of EVactive-reactive power regulation is developed considering the four-quadrant operational characteristics of the *** optimization model of the distribution network is then constructed considering the time-series coupling constraints of multiple types of voltage regulators.A multi-timescale control strategy is proposed by considering the impact of voltage regulators on active-reactive EV energy consumption and PV energy ***,a four-stage voltage control optimization strategy is proposed for various types of voltage regulators with multiple time ***-objective optimization is solved with the improvedDrosophila algorithmto realize the power fluctuation control of the distribution network and themulti-stage voltage control *** results validate that the proposed voltage control optimization strategy achieves the coordinated control of decentralized voltage control resources in the distribution *** effectively reduces the voltage deviation of the distribution network while ensuring the energy demand of EV users and enhancing the stability and economic efficiency of the distribution network.

关键词： Electric vehicle(EV) distribution network multi-stage optimization active-reactive power regulation voltage control

Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

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

Science China Chemistry 2025年

作者： yuan Tian Jiang-Bo Chen Jie ying Ge Tian Yu-xuan Xiao yi Lu Si-Ming Wu Wei Geng Ling Shen Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

关键词：

Low‑Temperature Fabrication of Stable Black‑Phase CsPbI_(3)Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第3期17卷 232-245页

作者： yingjie Zhao yicheng Sun Chaoxin Pei Xing yin Xinyi Li yi Hao Mengru Zhang Meng yuan Jinglin Zhou Yu Chen Yanlin Song College of Chemistry and Pingyuan Laboratory Zhengzhou UniversityZhengzhou 450001People’s Republic of China Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China Key Laboratory of Bio‑Inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049People’s Republic of China

Flexible wearable optoelectronic devices fabricated fromorganic–inorganic hybrid perovskites significantly accelerate the developmentof portable energy,biomedicine,and sensing fields,but their poor thermal stabilityhinders further ***,all-inorganic perovskites possessexcellent thermal stability,but black-phase all-inorganic perovskite filmusually requires high-temperature annealing steps,which increases energy consumptionand is not conducive to the fabrication of flexible wearable *** this work,an unprecedented low-temperature fabrication of stable blackphaseCsPbI3perovskite films is demonstrated by the in situ hydrolysis reactionof diphenylphosphinic chloride *** released diphenyl phosphateand chloride ions during the hydrolysis reaction significantly lower the phasetransition temperature and effectively passivate the defects in the perovskitefilms,yielding high-performance photodetectors with a responsivity of 42.1 AW−1 and a detectivity of 1.3×10^(14)***,high-fidelity imageand photoplethysmography sensors are demonstrated based on the fabricated flexible wearable *** work provides a newperspective for the low-temperature fabrication of large-area all-inorganic perovskite flexible optoelectronic devices.

关键词： In situ hydrolyzation Low-temperature processing All-inorganic perovskite Flexible photodetectors Health monitoring

消费者水产品质量安全支付意愿影响因素分析——以湖南娄底市城镇居民为例

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

中国渔业经济 2014年第1期32卷 142-148页

作者：袁暄懿车斌上海海洋大学经济管理学院上海201306

论文通过对湖南娄底市消费者问卷调查数据,并利用SPSS统计分析软件对影响消费者水产品质量安全支付意愿的变量进行研究分析,结果显示:消费者的受教育程度、性别、家庭月收入、每月农产品花费、年龄因素对消费者水产品质量安全支付意愿... 详细信息

论文通过对湖南娄底市消费者问卷调查数据,并利用SPSS统计分析软件对影响消费者水产品质量安全支付意愿的变量进行研究分析,结果显示:消费者的受教育程度、性别、家庭月收入、每月农产品花费、年龄因素对消费者水产品质量安全支付意愿有较大影响,但消费者受教育程度、性别与支付意愿呈负相关关系。并在此基础上提出相关建议:加大对水产品质量安全知识的宣传和普及;加大对认证水产品的补贴;在超市和农贸市场做好定点宣传和推广工作;制定切实可行的可追溯安全水产品营销战略。

关键词：因子分析主成份分析质量安全支付意愿

Chiral thermally activated delayed fluorescence materials for circularly polarized organic light-emitting diodes

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第4期67卷 1097-1116页

作者： Li yuan yi-Pin Zhang You-xuan Zheng State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Chirality is an important natural characteristic of organic molecules,and chiral organic molecules have shown extensive application in areas such as pharmaceutical development and material *** from the ability to achieve circularly polarized luminescence(CPL),chiral luminescent materials have shown potential applications in anti-glare display,optical communication and,3D display,*** to the ability to harvest both singlet and triplet excitons by a fast reverse intersystem crossing process without involving noble metals,chiral thermally activated delayed fluorescence(TADF)materials with point chirality,axial chirality,planar chirality and helical chirality are regarded as the state-of-the-art materials for circularly polarized organic light-emitting diodes(CP-OLEDs).In recent years,the chiral TADF materials and CP-OLEDs have rapidly developed,but unfortunately,the dissymmetry factors(g)are far from the requirement of practical *** ideal emitters and devices should have both high efficiency and a g factor,or at least a balance between these two *** review gives an overview of recent progress in chiral TADF materials,with a particular focus on the chiral skeleton,CPL property and device ***,the molecular design concept,device structure and methods to improve the g factors of chiral materials and CP-OLEDs are also discussed.

关键词： chiral thermally activated delayed fluorescence material chiral skeleton circularly polarized luminescence circularly polarized organic light-emitting diodes dissymmetry factor

在线全文

学校读者我要写书评

暂无评论

化学镀制备玄武岩纤维/镍核壳结构及其表征

中国表面工程 2006年第6期19卷 35-38页

作者：康玉清袁轩一曹茂盛北京理工大学材料科学与工程学院北京100081

采用简单易行的化学镀方法,在较低的温度下制备出一种新型的玄武岩纤维/镍核壳结构。SEM、XRD、XPS分析结果表明,金属Ni颗粒吸附在玄武岩纤维表面,形成了一层均匀连续的镍壳层。通过对试验结果进行分析,得出了制备玄武岩纤维/镍核壳结... 详细信息

采用简单易行的化学镀方法,在较低的温度下制备出一种新型的玄武岩纤维/镍核壳结构。SEM、XRD、XPS分析结果表明,金属Ni颗粒吸附在玄武岩纤维表面,形成了一层均匀连续的镍壳层。通过对试验结果进行分析,得出了制备玄武岩纤维/镍核壳结构的最佳温度和pH值分别为50℃和10.0。文中对化学镀核壳结构的形成机理也进行了初步分析。

关键词：玄武岩纤维核壳结构化学镀

Luminescence properties of nitrogen-rich Ca-SiAlON:Eu2+ phosphors prepared by freeze-drying assisted combustion synthesis

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2020年第5期27卷 687-692页

作者： Zhang-lin Chen Kai Liu xuan-yi yuan Ke-xin Chen Beijing Key Laboratory of Optoelectronic Functional Materials&Micro-nano Devices Department of PhysicsRenmin University of ChinaBeijing 100872China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100872China

Nitrogen-rich Eu2+-doped Ca-α-SiAlON phosphors(Cam/2-xSi12-m-nAlm+nOnN16-n:xEu) were synthesized by a freeze-drying assisted combustion synthesis(CS) route. Fast-synthesized products with high purity and uniform particle morphology were confirmed by X-ray diffraction(XRD) and scanning electron microscopy(SEM). The analysis of lattice parameters by comparison with empirical equations showed that the as-prepared phosphors had low oxygen content. A series of samples were prepared according to the stoichiometry of Cam/2-0.08Si12-mAlmN16:0.08 Eu for further research. The influences of m value on the luminescence properties were investigated in detail. As m increased, a redshift phenomenon was observed in both the excitation and emission spectra. First-principle electronic structure calculations showed that the 3d energy level of Ca played an important role in the occurrence of the redshift phenomenon.

关键词： freeze-drying combustion synthesis phosphors powder fluorescence spectra first-principle calculation

Efficacy of Bispecific Antibody Targeting EpCAM and CD3 for Immunotherapy in Ovarian Cancer Ascites:An Experimental Study

在线全文

学校读者我要写书评

暂无评论

Current Medical Science 2023年第3期43卷 539-550页

作者： yi-nuo LI yuan-yuan LI Shi-xuan WANG Xiang-yi MA Department of Obstetrics and Gynecology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Gynecology the Third Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China

Objective This study aimed to explore the value of M701,targeting epithelial cell adhesion molecule(EpCAM)and CD3,in the immunotherapy of ovarian cancer ascites by the in vitro *** The expression of EpCAM in ovarian cancer tissues was analyzed by *** EpCAM expression and immune cell infiltration in different foci of ovarian cancer were detected by 8-channel flow *** toxic effect of M701 on OVCAR3 was tested using the in vitro cytotoxicity *** 3D cell culture and drug intervention experiments were performed to evaluate the therapeutic effect of M701 in ovarian cancer *** cytometry was used to examine the effect of M701 on the binding of immune cells to tumor cells and the activation capacity of T *** The results of the bioinformatic analysis showed that the expression of EpCAM in ovarian cancer tissue was significantly higher than that in normal ovarian *** 8-channel flow cytometry of clinical samples showed that the EpCAM expression and lymphocyte infiltration were significantly heterogeneous among ovarian cancer patients and lesions at different *** in vitro experiment results showed that M701 had a significant killing effect on OVCAR3 cells.M701 also obviously killed primary tumor cells derived from some patients with ovarian cancer ascites.M701 could mediate the binding of CD3^(+)T cells to EpCAM^(+)tumor cells and induce T cell activation in a dose-dependent *** M701 showed significant inhibitory activity on tumor cells derived from ovarian cancer ascites,which had a promising application in immunotherapy for patients with ovarian cancer ascites.

关键词： ovarian cancer ascites EpCAM immunotherapy bispecific antibody