检索结果-南通市图书馆

Journal of Rare Earths 2024年第3期42卷 570-577,I0005页

作者： Yudi Guo Erqing zhao Xiaofang zhao Shuailei Liu School of Chemistry and Materials Engineering Xinxiang UniversityXinxiang453003China School of Chemistry and Chemical Engineering Henan Institute of Science and TechnologyXinxiang453003China

The research of poly(ethylene oxide)(PEO)-based solid composite electrolyte with high ionic conductivity and excellent interfacial stability is the key to the development of all-solid-state lithium-ion batteries(ASSLIBs). Herein, uniform nanorod structured CeO_(2) fillers were controllably synthesized by electrospinning, which were subsequently filled into PEO polymer to prepare CeO_(2)/PEO solid composite electrolyte. The addition of CeO_(2) nanorods can reduce both the glass transition temperature and the melting point of PEO polymer, and also interact with PEO and lithium bis(trifluoromethanesulphonyl)imide(LITFSI) by Lewis acid—base reaction. Therefore, the solid composite electrolyte exhibits a high ionic conductivity of 4.52 × 10^(-4)S/cm, a wide electrochemical stability window of about 4.8 V, and a good interfacial stability with Li at 55℃. Moreover, the LiFePO_4/Li ASSLIB divulges the discharging specific capacity of 165, 162, 156 and 146 mA,h/g at 0.2, 0.5, 1 and 2 C, respectively, and achieves the capacity retention of 90.3% after 150 cycles at 0.5 C. Consequently, one dimensional CeO_(2) nanorods can be considered as an alternative filler for polymeric solid electrolyte.

关键词： Poly(ethylene oxide) Solid composite electrolyte CeO_(2)nanorods Ionic conductivity Rare earths

The trajectory of rice from wild to domesticated:A new chapter in the study of origins of agriculture

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2024年第9期67卷 3011-3012页

作者： Zhijun zhao Institute of Cultural Heritage Shandong UniversityQingdao 266237China

Rice(Oryza sativa)is one of the most important food crops in the world today,feeding more than one-third of the global *** domestication of rice has always been an international research topic(Gross and zhao,2014).When,where,and how rice was cultivated and eventually domesticated has been a hot issue in many research fields such as archaeology,biology,and agronomy(Fuller et al.,2009).

关键词： sativa Oryza crops

A DIRECT DISCONTINUOUS GALERKIN METHOD FOR TIME FRACTIONAL DIFFUSION EQUATIONS WITH FRACTIONAL DYNAMIC BOUNDARY CONDITIONS

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 2024年第1期42卷 156-177页

作者： Jingjun zhao Wenjiao zhao Yang Xu School of Mathematics Harbin Institute of TechnologyHarbin 150001China

This paper deals with the numerical approximation for the time fractional diffusion problem with fractional dynamic boundary *** well-posedness for the weak solutions is studied.A direct discontinuous Galerkin approach is used in spatial direction under the uniform meshes,together with a second-order Alikhanov scheme is utilized in temporal direction on the graded mesh,and then the fully discrete scheme is ***,the stability and the error estimate for the full scheme are analyzed in *** experiments are also given to illustrate the effectiveness of the proposed method.

关键词： Time fractional diffusion equation Numerical stability Convergence

三氟拉嗪与八肋游仆虫中心蛋白N端半分子的结合及对蛋白功能的影响

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

高等学校化学学报 2019年第11期40卷 2257-2264页

作者：叶旭文张文龙王志军赵亚琴杨斌盛山西大学分子科学研究所化学生物学与分子工程教育部重点实验室

采用荧光光谱、圆二色光谱(CD)、等温滴定量热分析(ITC)、电泳及分子对接等分析技术,研究了三氟拉嗪(TFP)与八肋游仆虫中心蛋白N端半分子(apoN-EoCen)的结合,考察了TFP对apoN-EoCen性质的影响.结果表明,在室温下10 mmol/L Hepes缓冲溶液... 详细信息

采用荧光光谱、圆二色光谱(CD)、等温滴定量热分析(ITC)、电泳及分子对接等分析技术,研究了三氟拉嗪(TFP)与八肋游仆虫中心蛋白N端半分子(apoN-EoCen)的结合,考察了TFP对apoN-EoCen性质的影响.结果表明,在室温下10 mmol/L Hepes缓冲溶液(pH=7.4)中,TFP与apoN-EoCen以摩尔比1∶1结合于apoN-EoCen的第二个EF-手的E,F螺旋之间,条件结合常数约为10^3L/mol;TFP的结合导致蛋白质二级结构发生改变,α螺旋含量减小,Tb^3+敏化荧光强度降低83%,apoN-EoCen切割DNA的类核酸酶活性明显受到抑制;Tb^3+仍可占据复合物apoN-EoCen-TFP中蛋白质的2个金属离子结合位置,条件结合常数约为7.0×10^5L/mol,TFP的结合不抑制金属离子诱导的蛋白质聚集.

关键词： apoN-EoCen 三氟拉嗪 Tb^3+离子光谱分析

在线全文

学校读者我要写书评

暂无评论

烯啶虫胺可溶液剂防治水稻稻飞虱初探

浙江农业科学 2010年第4期51卷 841-841,845页

作者：赵雅琴浙江省上虞市农业技术推广中心浙江上虞312300

试验结果表明,20%烯啶虫胺可溶液剂防治水稻褐飞虱和灰飞虱的效果,优于常规农药25%噻嗪酮可湿性粉剂,且对水稻安全。稻飞虱若虫发生高峰时,以225 mL·hm-2,对水675 kg·hm-2均匀喷雾为宜。

关键词：烯啶虫胺稻飞虱水稻

Resilient control of flexible hypersonic vehicles against unmatched distributed faults

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2024年第5期37卷 60-70页

作者： Dong zhao Wenjing REN School of Artificial Intelligence Anhui UniversityHefei 230601China Key Laboratory of System Control and Information Processing Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China School of Electrical Engineering and Automation Hefei University of TechnologyHefei 230009China

This paper studies a robust fault compensation and vibration suppression problem of flexible hypersonic *** controlled plant is represented by a cascade system composed of a nonlinear Ordinary Differential Equation(ODE)and an Euler-Bernoulli Beam Equation(EBBE),in which the vibration dynamics is coupled with the rigid dynamics and suffers from distributed faults.A state differential transformation is introduced to transfer distributed faults to an EBBE boundary and a longitudinal dynamics is refined by utilizing T-S fuzzy IF-THEN rules.A novel T-S fuzzy based fault-tolerant control algorithm is developed and related stability conditions are *** robust exponential stability and well-posedness are proved by using the modified l_(0)-semigroup based Lyapunov direct approach.A simulation study on the longitudinal dynamics of flexible hypersonic vehicles effectively verifies the validity of the developed theoretical results.

关键词： Flexible hypersonic vehicles ODE-EBBE cascade Robust exponential stability Unmatched distributed fault compensation Vibration suppression

在线全文

学校读者我要写书评

暂无评论

跨文化在英语教学中的渗透

科教文汇 2014年第1期 138-139页

作者：赵亚琴泰州职业技术学院基础科学部江苏泰州225300

在语言交际与教学的过程之中,跨文化渗透现象是一个应该予以重视的问题。英语教学不仅是语言知识的教授,而且也是文化知识的传播。在英语教学中,只有把语言知识与文化知识加以充分结合,才能有效地提高学生的语言交际能力。本文主要从跨... 详细信息

在语言交际与教学的过程之中,跨文化渗透现象是一个应该予以重视的问题。英语教学不仅是语言知识的教授,而且也是文化知识的传播。在英语教学中,只有把语言知识与文化知识加以充分结合,才能有效地提高学生的语言交际能力。本文主要从跨文化的角度探索英语教学,阐述了语言与文化的内涵,通过分析跨文化英语教学的现状及其问题,提出了跨文化英语教学的几点方法和策略。

关键词：跨文化渗透语言交际英语教学文化知识

H-and J-aggregation of conjugated small molecules in organic solar cells

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第6期93卷 174-192,I0005页

作者： Qiaoqiao zhao Feng He State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan 250353ShangdongChina Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055GuangdongChina

As H-and J-aggregation receive more and more attention in the research of organic solar cells(OSCs),especially in small molecular systems,deep understanding of aggregation behavior is needed to guide the design of conjugated small molecular structure and the fabrication process of OSC *** this end,this review is ***,the review firstly introduced the basic information about H-and J-aggregation of conjugated small molecules in ***,the characteristics of H-and J-aggregation and the methods to identify them were ***,it reviewed the research progress of H-and J-aggregation of conjugated small molecules in OSCs,including the factors influencing H-and J-aggregation in thin film and the effects of H-and J-aggregation on OPV performance.

关键词： H-aggregation J-aggregation Organic solar cells Small molecules Efficiency Stability

A novel Bayesian-based INS/GNSS integrated positioning method with both adaptability and robustness in urban environments

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2024年第6期37卷 205-218页

作者： Zhe YANG Hongbo zhao School of Electronics and Information Engineering Beihang UniversityBeijing 100191China

Achieving higher accuracy positioning results in urban environments at a lower cost has been an important pursuit in areas such as autonomous driving and intelligent *** Inertial Navigation System and Global Navigation Satellite System(INS/GNSS)integrated navigation systems have been an important means of fulfilling the above quest due to the complementary error characteristics between INS and *** complex urban driving environment requires the system sufficiently adaptive to keep up with the time-varying measurement noise and sufficiently robust to cope with measurement outliers and prior ***,many efforts lack a balance between adaptability and *** this paper,a novel positioning method with both adaptability and robustness is proposed by coupling the Mahalanobis distance method,the Variational Bayesian method and the student’s t-distribution in one process(M-VBt method).This method is robust against non-Gaussian noise and priori uncertainties,plus adaptive against measurement noise uncertainty and time-varying *** field test results show that the M-VBt method(especially the Mahalanobis distance part)has significantly improved the system performance in the complex urban driving environment.

关键词： Urban environments Mahalanobis distance Adaptability Robustness Integrated navigation

A water-stable high-voltage P3-type cathode for sodium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第9期35卷 507-513页

作者： Shengyu zhao Xuan Yu Yufeng zhao Institute for Sustainable Energy&College of Sciences Shanghai UniversityShanghai 200444China

The Na-deficient P3-type layered oxide cathode material usually experience complex in-plane Na^(+)/vacancy ordering rearrangement and undesirable P3-O3 phase transitions in the high-voltage region,leading to inferior cycling ***,they exhibit unsatisfactory stability when exposed to water for extended *** address these challenges,we propose a Cu/Ti co-doped P3-type cathode material(Na_(0.67)Ni_(0.3)Cu_(0.03)Mn_(0.6)Ti_(0.07)O_(2)),which effectively mitigates Na^(+)/vacancy ordering and suppresses P3-O3 phase transitions at high *** a result,the as-prepared sample exhibited outstanding cyclic performance,with 81.9%retention after 500 cycles within 2.5–4.15 V,and 75.7%retention after300 cycles within 2.5–4.25 ***,it demonstrates enhanced Na^(+)transport kinetics during desodiation/sodiation and reduced growth of charge transfer impedance(R_(ct))after various ***,the sample showed superb stability against water,exhibiting no discernible degradation in structure,morphology,or electrochemical *** co-doping strategy provides new insights for innovative and prospective cathode materials.

关键词： Sodium ion batteries P3-type materials Phase transition Na^(+)/vacancy ordering Water-stable cathode