检索结果-南通市图书馆

Integrating lipidomics and gut microbiota to study the anti-hyperlipidemia effect of Sargentodoxae Caulis extract

Traditional Medicine Research 2025年第1期10卷 1-11页

作者： Xiao-Xiao zhang Li Jia Xiu-Jun Zhan Charity Ngina Qing-rui zhang Xiao-Ge Li Qi-Bao Jiang Shi Bai Miao-Miao Jiang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjin 301617China Haihe Laboratory of Modern Chinese Medicine Tianjin 301617China School of Medicine Taizhou UniversityTaizhou 318000China.

Background:Sargentodoxae Caulis(SC)is the vine stem of Sargentodoxa Cuneata(Oliv.)Rehd.&*** in ***,and it in traditional Chinese medicine has been known for promoting blood circulation and removing blood stasis as recorded in the ancient book“Illustrated Classics of Materia Medica”.It has been used effectively to treat blood stasis too in modern clinical ***,the anti-hyperlipidemia effect of SC is not fully *** paper aims at exploring the use of SC stems to improve the balance of blood lipids in the body,and its new role in treating ***:The effects of SC extract on hyperlipidemia were explored by combining lipidomics and gut ***,we explored the potential mechanism of SC in treating hyperlipidemia by pathway ***:The results showed that the stem extract of SC could restore the physiological and biochemical indices of hyperlipidemia in mice,as well as repair the morphological and structural damage to *** to the Model group,the SC extract significantly reduced the liver index,epididymal fat index,and Lee’s *** also significantly decreased serum levels of total cholesterol,triglycerides,low-density lipoprotein cholesterol,peroxisome proliferator-activated receptor gamma(PPAR-γ),D-lactate,and free fatty acids,while significantly increasing the relative content of peroxisome proliferator-activated receptor alpha(PPAR-α).These changes were statistically ***-targeted lipidomics,based on LC-MS,were utilized to investigate the lipid metabolism characteristics in serum,liver,and epididymal fat of the *** was observed that,compared to the blank group,the Model group exhibited significant changes primarily in glycerol lipids and *** treatment group also displayed alterations in these lipids.A total of 38,81,and 27 differential lipids were identified in serum,liver,and epididymal fat samples,*** these,14 common differenti

关键词： hyperlipidemia Sargentodoxae Caulis lipidomics intestinal flora

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

SAR target recognition based on active contour without edges

引用

Journal of Systems Engineering and Electronics 2017年第2期28卷 276-281页

作者： rui zhang Min zhang School of Physics and Optoelectionic Engineering Xidian University Xi’an 710071 China

A new method for synthetic aperture radar (SAR) target recognition is proposed. This method is accomplished via the combination of active contour without edges, Hu invariant moments and support vector machine (SVM) classifier. Image segmentation is performed by using active contour without edges. Then seven Hu moments are extracted and normalized as feature vectors. Finally, the SVM classifier is employed for data training and testing by means of MSTAR SAR images. To verify the performance of the proposed method, the traditional active contour (snakes) is used for comparison. The simulation results confirm the feasibility and accuracy of the proposed method in SAR target recognition. © 2017 Beijing Institute of Aerospace Information.

关键词： Image segmentation Radar Radar imaging Support vector machines Synthetic aperture radar

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

Slim exceptional set for sums of two squares, two cubes, and two biquadrates of primes

引用

Frontiers of Mathematics in China 2019年第5期14卷 1017-1035页

作者： rui zhang School of Mathematics Tianjin UniversityTianjin 300350China

We prove that,with at most O(N17/192+ε)exceptions,all even positive integers up to N are expressible in the form P1^2+P2^2+P3^3+P5^4+P6^4,where Pi,P2,……,P6 are prime *** gives large improvement of a recent result 0... 详细信息

关键词： Waring-Goldbach problem circle method exceptional set

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

Combined control of fast attitude maneuver and stabilization for large complex spacecraft

引用

Acta Mechanica Sinica 2013年第6期29卷 875-882页

作者： Yao zhang Jing-rui zhang School of Aerospace Engineering Beijing Institute of Technology

In remote sensing or laser communication space missions, spacecraft need fast maneuver and fast stabilization in order to accomplish agile imaging and attitude tracking tasks. However, fast attitude maneuvers can easily cause elastic deformations and vibrations in flexible appendages of the spacecraft. This paper focuses on this problem and deals with the combined control of fast attitude maneuver and sta- bilization for large complex spacecraft. The mathematical model of complex spacecraft with flexible appendages and momentum bias actuators on board is presented. Based on the plant model and combined with the feedback controller, modal parameters of the closed-loop system are calculated, and a multiple mode input shaper utilizing the modal information is designed to suppress vibrations. Aiming at reducing vibrations excited by attitude maneuver, a quintic polynomial form rotation path planning is proposed with constraints on the actuators and the angular velocity taken into account. Attitude maneuver simulation results of the control systems with input shaper or path planning in loop are sepa- rately analyzed, and based on the analysis, a combined control strategy is presented with both path planning and input shaper in loop. Simulation results show that the combined control strategy satisfies the complex spacecraft＇s require- ment of fast maneuver and stabilization with the actuators＇ torque limitation satisfied at the same time.

关键词： Attitude control Input shaping Path planning Vibration suppression

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

Existence of Optical Vortex Solitons in Pair Plasmas

引用

Acta Mathematicae Applicatae Sinica 2023年第3期39卷 571-582页

作者： rui-feng zhang School of Mathematics and Statistics Henan UniversityKaifeng 475004China

Optical vortices arise as phase dislocations of light fields and they are of importance in modern optical *** this study,we employ the calculus of variations method to develop an existence theory for the steady state vortex solutions of a nonlinear Schr?dinger type equation to model light waves that propagate in a medium with a new focusing-defocusing ***,we demonstrate the existence of positive radially symmetric solutions by constrained minimization,where we give some interesting explicit estimates related to vortex winding numbers and the wave propagation ***,we establish the existence of saddle-point solutions through a mountain-pass argument.

关键词： Calculus of variations mountain-pass theorem pair plasmas nonlinear Schr?dinger type equation optical vortices

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

Prescribed Error Performance Control for Second-Order Fully Actuated Systems

引用

Journal of Systems Science & Complexity 2022年第2期35卷 660-669页

作者： LI Zhi zhang Ying zhang rui School of Mechanical Engineering and Automation Harbin Institute of Technology(Shenzhen)Shenzhen 518055China School of Electronic and Communication Engineering Shenzhen PolytechnicShenzhen 518055China

In this paper,the prescribed error trajectory control is proposed for second-order fully actuated *** first,by taking advantage of the full-actuation property,an intermediate control law is designed such that the intermediate closed-loop system is in a very simple ***,by utilizing the initial conditions of system states and the prescribed error performance function,the intermediate control law is developed to force the tracking error of the system on the proposed sliding mode surface from the *** overall control law is obtained by combining the aforementioned *** is revealed that under the designed control law,the tracking error of the closed-loop system converges to zero along the prescribed error ***,an example is provided to validate the effectiveness of the presented approach.

关键词： Fully actuated systems prescribed error trajectory slide mode surface

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

Enhancing wireless sensing via a target-mounted intelligent reflecting surface

引用

National Science Review 2023年第8期10卷 13-14页

作者： Xiaodan Shao rui zhang School of Science and Engineering Shenzhen Research Institute of Big Data The Chinese University of Hong Kong Department of Electrical and Computer Engineering National University of Singapore

An intelligent reflecting surface(IRS),or its various equivalents such as an reconfigurable intelligent surface(RIS), is an emerging technology to control radio signal propagation in wireless systems. An IRS is a digitally controlled metasurface consisting of a large number of passive reflecting elements, which are connected to a smart controller to enable dynamic adjustments of the amplitude and/or phase of the incident signal on each element independently [1].

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

H_∞ CONTROL FOR STOCHASTIC SYSTEMS WITH POISSON JUMPS

引用

Journal of Systems Science & Complexity 2011年第4期24卷 683-700页

作者： Xiangyun LIN rui zhang Schooi of Mathematics Shandong University Jinan 250100 China College of Science Shandong Universityof Science and Technology Qingdao 266510 China. College of Information Science and Technology Shandong University of Science and Technology Qingdao 266510 China.

This paper discusses the H∞ control problem for a class of linear stochastic systems driven by both Brownian motion and Poisson jumps. The authors give the basic theory about stabilities for such systems, including internal stability and external stability, which enables to prove the bounded real lemma for the systems. By means of Riccati equations, infinite horizon linear stochastic state-feedback H∞ control design is also extended to such systems.

关键词： Externally stable H∞ control internally stable Poisson random measure Riccati equa-tion stochastic system with jumps.

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

Robust H-infinity filter for a class of polytopic Delta operator systems

引用

控制理论与应用（英文版） 2013年第2期11卷 255-260页

作者： Ying zhang rui zhang Shenzhen Graduate School Harbin Institute of Technology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences

This study deals with the robust H-infinity filtering for a class of Delta operator systems with polytopic uncertainties. By the aid of introducing two slack matrices to eliminate the coupling between systems matrices and Lya- punov matrices, an improved version of the bounded real lemma is given via linear matrix inequality formulation, which shows a close correspondence between the continuous- and discrete-time H-infinity performance criterion. Based on it, the existence condition of the desired filter is obtained such that the corresponding filtering error system is asymptotically stable with a guaranteed performance index. A numerical example is employed to illustrate the feasibility and advantages of the orooosed design.

关键词： Robust H-infinity filtering Linear matrix inequality Polytopic uncertainty H-infinity performance

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

The organization,regulation,and biological functions of the synaptonemal complex

引用

Asian Journal of Andrology 2021年第6期23卷 580-589页

作者： Feng-Guo zhang rui-rui zhang Jin-Min Gao Institute of Biomedical Sciences College of Life SciencesKey Laboratory of Animal Resistance Biology of Shandong ProvinceShandong Normal UniversityJinan 250014China

The synaptonemal complex(SC)is a meiosis-specific proteinaceous macromolecular structure that assembles between paired homologous chromosomes during meiosis in various *** SC has a highly conserved ultrastructure and plays critical roles in controlling multiple steps in meiotic recombination and crossover formation,ensuring accurate meiotic chromosome *** studies in different organisms,facilitated by advances in super-resolution microscopy,have provided insights into the macromolecular structure of the SC,including the internal organization of the meiotic chromosome axis and SC central region,the regulatory pathways that control SC assembly and dynamics,and the biological functions exerted by the SC and its *** review summarizes recent discoveries about how the SC is organized and regulated that help to explain the biological functions associated with this meiosis-specific structure.

关键词： chromosome axis chromosome segregation crossover meiosis meiotic recombination reproduction synapsis synaptonemal complex

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

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：