检索结果-南通市图书馆

Molecular Dynamics Simulations of the Elastic Anisotropy of Pd at Extreme Conditions

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2018年第6期69卷 735-740页

作者： xiu-Lu Zhang Yun-Xia han Hong Jia Nuo Qu Zhong-Li Liu Laboratory for Extreme Conditions Matter Properties Southwest University of Science and Technology621010 Mianyang China College of Physics and Electric Information Luoyang Normal University Luoyang 471022 China

It is very interesting to discover the elastic properties of engineering material palladium, especially its elastic anisotropy along Hugoniot states. We here investigate the evolution of its high pressure and temperature(PT) elastic ansotropy along Hugoniot using molecular dynamics simulations based on accurate classical interatomic potential. In order to testify the validity of the interatomic potential of Pd in describing the high PT elastic properties, we calculate its isothermal and adiabatic elastic moduli using molecular dynamics method. The obtained data are in good agreement with experimental data. From the isothermal elastic constants, we deduce the Hugoniot acoustic velocities and find that the resulting data are in good agreement with experimental acoustic velocity data. Based on the reliable elastic constants, we further investigate the spacial elastic ansotropy along Hugoniot PT states. It is found that the spacial elastic anisotropy of Pd increases along Hugoniot states.

关键词： elastic anisotropy Hugoniot states extreme conditions

A survey on complex dynamical networks with impulsive effects

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2020年第2期21卷 199-219页

作者： xiu-ping han Yong-shun ZHAO Xiao-di LI School of Mathematics and Statistics Shandong Normal UniversityJinan 250014China

We review the research on complex dynamical networks(CDNs)with impulsive *** provide a comprehensive and intuitive overview of the fundamental results and recent progress of CDNs with impulsive effects,where impulsive effects are considered from two aspects,i.e.,impulsive control and impulsive *** aspects of CDNs with impulsive effects are surveyed,including synchronizing impulses,desynchronizing impulses,adaptive-impulsive synchronization,pinning impulsive synchronization,and CDNs with stochastic and impulsive ***,conclusions and some future research directions are briefly addressed.

关键词： Complex dynamical networks Synchronizing impulses Desynchronizing impulses Pinning control Time delay

Glomus tumor in the stomach:Computed tomography and endoscopic ultrasound findings

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第8期19卷 1327-1329页

作者： Min Tang Jun Hou Dong Wu Xin-Ye han Meng-Su Zeng xiu-Zhong Yao Department of Radiology Zhongshan Hospital of Fudan University Department of Medical Image Shanghai Medical College of Fudan University Department of Pathology Zhongshan Hospital of Fudan University

A 57-year-old man presented with intermittent dull abdominal pain after a period of 1 *** computed tomography(CT) was *** for the endoscopy,the work-up for possible medical causes remained *** open-abdomen,partial surgical excision of the stomach was performed after the unsuccessful endoscopic *** pathology report revealed a glomus tumor of the ***,glomus tumors of the stomach are rare and are almost always ***,the most important current role of imaging associated with the diagnostic approach and therapeutic plan for a glomus tumor is to differentiate it from other gastric submucosal tumors(SMTs).We report this case with representative radiologic findings,including CT and endoscopic ultrasound(EUS) reports,and also correlate them with clinical and pathologic presentations that can help in the early detection and differentiation of gastric SMTs from other *** such,the purpose of this report is to provide a better understanding of relevant CT and EUS *** treatments should be considered carefully according to the imaging results.

关键词： Glomus tumor Stomach Diagnosis Therapy

nfluence and mechanism of Xindakang on cardiac functions of isolated frog heart

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

中国药理学与毒理学杂志 2021年第10期35卷 764-765页

作者： KONG xiu-mei JIANG Yi han Yi-wei ZHAO Qin Engineering Research Center of Tibetan Medicine Testing Technology of Ministry of Education Tibetan Medicine Screening LaboratorySchool of MedicineTibet University for NationalitiesXianyang 712082China

OBJECTIVE To evaluate the effects of flavonoids from Xindakang(Hippophae Fructus flavone)on myocardial systolic and diastolic functions of isolated frog hearts and explore the possible mechanism,and provide experimental basis for improving the effect and efficacy of Xindakang on cardiac *** The isolated frog heart perfusion specimens were prepared by Yagi′s method,and the effects of different concentrations of Xindakang on myocardial contractility(0.0125,0.025,0.05,0.1 and 0.2 g·L^(-1)),heart rate and cardiac output of isolated frog heart were ***,atropine and epinephrine were administered successively to analyze the effects of Xindakang on cardiac systolic function of isolated frogs under the action of different drugs,and compared with *** effect of extracellular calcium ion concentration on the action of Xindakang was studied by using low calcium concentration,high calcium concentration and normal Ren′s *** study the effect and possible mechanism of Xindakang on cardiac systolic function of *** The concentration of Xindakang in the range of 0.0125-0.1 g·L^(-1)could weaken the contractility of isolated frog heart and increase the concentration of *** inhibitory effect of Xindakang on contractility of isolated frog heart was enhanced,and showed obvious dose-effect *** output was significantly decreased by Xindakang(Phannel on myocardial cell membrane and reducing the cal

关键词： Hippophae Fructus flavone Xindakang isolated frog heart cardiac function

Logging identification method of depositional facies in Sinian Dengying Formation of the Sichuan Basin

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2021年第4期18卷 1086-1096页

作者： Qing-Fu Feng Yu-Xiang Xiao xiu-Lin Hou Hong-Kui Chen Ze-Cheng Wang Zhou Feng han Tian Hua Jiang Research Institute of Petroleum Exploration&Development Beijing100083China College of Geosciences China University of Petroluem(Beijing)Beijing 102249China

The sedimentary facies/microfacies,which can be correlated with well logs,determine reservoir quality and hydrocarbon productivity in carbonate *** identification and evaluation of sedimentary facies/microfacies using well logs are very important in order to effectively guide the exploration and development of oil and *** carbonate facies/microfacies identification methods based on conventional well log data often exist multiple *** paper presents a new method of facies/microfacies identification based on core-conventional logs-electrical image log-geological model,and the method is applied in the fourth member of the Dengying Formation(Deng 4)in the Gaoshiti-Moxi area of the Sichuan ***,core data are used to calibrate different types of facies/microfacies,with the aim to systematically clarify the conventional and electrical image log responses for each type of facies/***,through the pair wise correlation analysis of conventional logs,GR,RT and CNL,are selected as sensitive curves to establish the microfacies discrimination criteria ***,five well logging response models and identification charts of facies/microfacies are established based on electrical image *** sedimentary microfacies of 60 exploratory wells was analyzed individually through this method,and the microfacies maps of 4 layers of the Deng 4 Member were compiled,and the plane distribution of microfacies in the Gaoshiti-Moxi area of the Sichuan Basin was *** comparative analysis of oil testing or production results of wells reveals three most favorable types of microfacies and they include algal psammitic shoal,algal agglutinate mound,and algal stromatolite mound,which provide a reliable technical support to the exploration,development and well deployment in the study area.

关键词： Deng 4 member Core calibration Microfacies Electrical image log Log facies Karst reservoir

Improving Impact Toughness of Polylactide/Ethylene-co-vinyl-acetate Blends via Adding Fumed Silica Nanoparticles:Effects of Specific Surface Area-dependent Interfacial Selective Distribution of Silica

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2021年第8期39卷 1040-1049,I0008页

作者： Ting-Ting Zhang Mei-Xi Zhou Zhen-You Guo You-Bo Zhao Di han Hao xiu Hong-Wei Bai Qin Zhang Qiang Fu College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China

Adding fumed silica(Si0_(2))has been considered as an effective method for tailoring the phase morphology and performance of elastomer-toughened plastic binary *** has been demonstrated that the selective distribution of SiO_(2) plays a decisive role in the mechanical properties of plastic/elastomer/SiO_(2)nanocomposites,especially for the impact *** this work,we aim to illuminate the role of specific surface area in controlling their selective distribution of fumed SiO_(2) and consequent mechanical properties of plastic/elastomer binary *** types of SiO_(2) with different specific surface areas were incorporated into polylactide/ethylene-co-vinyl-acetate(PLA/EVA)model blends by melt blending *** was found that the selective distribution of SiO_(2) is largely determined by their specific surface areas,***_(2) nanoparticles with low specific surface area has a stronger tendency to be located at the interface between PLA matrix and EVA dispersed phase as compared to those with high specific surface *** specific surface area-dependent interfacial selective distribution of SiO_(2) is mainly attributed to the extent of increased viscosity of EVA dispersed phase in which SiO_(2)nanoparticles are initially dispersed and resultant migration rate of SiO_(2) *** interfacial localized SiO_(2) nanoparticles induce an obvious enhancement in the impact toughness with strength and modulus well *** importantly,in the case of the same interfacial distribution,toughening efficiency is increased with the specific surface area of SiO_(2).Therefore,this is an optimum specific surface area of SiO_(2) for the *** work not only provides a novel way to manipulate the selective distribution of SiO_(2) in elastomer-toughened plastic blends toward high-performance,but also gives a deep insight into the role of interfacial localized nanoparticles in the toughening mechanism.

关键词： Fumed silica Specific surface area Selective distribution Polylactide Impact toughness

DMMIC derivatization-assisted liquid chromatography-mass spectrometry method for metabolite profiling of the glutathione anabolic pathway in esophageal cancer tissues and cells

在线全文

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2023年第11期13卷 1365-1373页

作者： Li Liu Yu-han Lu Min-Dan Wang Qun-Fei Zhao xiu-Ping Chen hang Yin Chen-Guo Feng Fang Zhang The Research Center of Chiral Drugs Shanghai Frontiers Science Center for TCM Chemical BiologyInnovation Research Institute of Traditional Chinese MedicineShanghai University of Traditional Chinese MedicineShanghai201203China Department of Thoracic Surgery Renji HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai200127China School of Public Health Shanghai University of Traditional Chinese MedicineShanghai201203China

In this work,a new pyrylium derivatization-assisted liquid chromatography-mass spectrometry(LC-MS)method was developed for metabolite profiling of the glutathione anabolic pathway(GAP)in cancer tissues and *** pyrylium salt of 6,7-dimethoxy-3-methyl isochromenylium tetrafluoroborate(DMMIC)was used to label the amino group of metabolites,and a reductant of dithiothreitol(DTT)was employed to stabilize the thiol *** combining DMMIC derivatization with LC-MS,it was feasible to quantify the 13 main metabolites on the GAP in complex biological samples,which had good linearity(R^(2)=0.99810.9999),precision(interday precision of 1.6%e19.0%and intraday precision of 1.4%e19.8%)and accuracy(83.4%-115.7%).Moreover,the recovery assessments in tissues(82.5%e107.3%)and in cells(98.1%e118.9%)with GSH-^(13)C2,^(15)N,and Cys-^(15)N demonstrated the reliability of the method in detecting tissues and *** a methodological evaluation,the method was applied successfully to investigate difference in the GAP between the carcinoma and para-carcinoma tissues of esophageal squamous cell carcinoma(ESCC)and the effect of p-hydroxycinnamaldehyde(CMSP)on the GAP in KYSE150 esophageal cancer *** results demonstrate that the developed method provides a promising new tool to elucidate the roles of GAP in physiological and pathological processes,which can contribute to research on drugs and diseases.

关键词： Glutathione anabolic pathway Metabolite profiling DMMIC derivatization LC-MS Esophageal squamous cell carcinoma p-Hydroxycinnamaldehyde KYSE-150cell

Simultaneous Stabilization for a Collection of Multi-input Nonlinear Systems with Uncertain Parameters

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

自动化学报 2009年第2期35卷 206-209页

作者： CAI xiu-Shan han Zheng-Zhi ZhanG Wei College of Mathematics Physics and Information Engineering Zhejiang Normal University Jinhua 321004 P. R. China School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China

Simultaneous stabilization for a collection of multi-input nonlinear systems with uncertain parameters is dealt with in this paper. A systematic method for obtaining a control Lyapunov function (CLF) is presented by solving the Lyapunov equation. A sufficient condition that a quadratic CLF is a common CLF for these systems is acquired. A continuous state feedback is designed to simultaneously stabilize these systems. Finally, the effectiveness of the proposed scheme is illustrated by a simulation example.

关键词：不确定非线性系统仿真系统自动化技术分析方法

Construction of Control Lyapunov Functions for a Class of Nonlinear Systems

在线全文

学校读者我要写书评

暂无评论

自动化学报 2006年第5期32卷 796-799页

作者： CAI xiu-Shan han Zheng-Zhi WANG Xiao-Dong College of Information Science and Engineering Zhejiang Normal University Jinhua 321004 Department of Automation Shanghai Jiaotong University Shanghai 200030

The construction of control Lyapunov functions for a class of nonlinear systems is considered. We develop a method by which a control Lyapunov function for the feedback linearizable part can be constructed systematically via Lyapunov equation. Moreover, by a control Lyapunov function of the feedback linearizable part and a Lyapunov function of the zero dynamics, a control Lyapunov function for the overall nonlinear system is established.

关键词： Nonlinear systems control Lyapunov functions semiglobal stabilization zero dynamics.