检索结果-南通市图书馆

The interventional effect of Polygonatum cyrtonema Hua polysaccharide on atherosclerosis in mice of different sexes

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第1期13卷 370-380页

作者： Anjun Guo Xueying Li Lihua Pan Qiangming Li jianping luo Xueqiang Zha Engineering Research Centre of Bioprocess of Ministry of Education Hefei University of TechnologyHefei 230009China School of Food and Biological Engineering Hefei University of TechnologyHefei 230009China Key Laboratory of Metabolism and Regulation for Major Disease of Anhui Higher Education Institutes Hefei University of TechnologyHefei 230009China

In the present study,we investigated the intervention effects of a purified Polygonatum cyrtonema polysaccharide(PCP)on high-fat diet(HFD)-induced atherosclerosis in male and female LDLr-/-*** showed that HFD caused severe dyslipidemia,atherosclerotic lesions,oxidative damages and inflammation in male and female mice,and these effects seemed to be more pronounced in males than in ***,the above variations could be dose-dependently reversed by PCP treatment,and the intervention effects on males were greater than those on *** factor kappa-B(NF-κB),mitogen-activated protein kinase(MAPKs)and protein kinase B(Akt)are 3 pivotal signaling pathways mediating the development of ***,PCP was also found to significantly decrease the phosphorylation of p65,p38,extracellular-regulated kinase 1/2(ERK1/2)and Akt,and increase the protein expression of inhibitor of NF-κB(IκB)in the aortas of male and female mice induced by *** together,these findings indicated that PCP could be effective for the prevention of atherosclerosis,and the intervention effect of PCP on male mice was more obvious than that of female mice.

关键词： Polygonatum cyrtonema polysaccharide Anti-atherosclerosis Sex

Asymptotic solutions of the flow of a Johnson-Segalman fluid through a slowly varying pipe using double perturbation strategy

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2018年第2期39卷 169-180页

作者： Xinyin ZOU Xiang QIU jianping luo Jiahua LI P.N.KALONI Yulu LIU School of Mechanical Engineering Shanghai Institute of Technology School of Science Shanghai Institute of Technology College of Urban Construction and Safety Engineering Shanghai Institute of Technology Department of Mathematics and Statistics University of Windsor Shanghai Institute of Applied Mathematics and Mechanics Shanghai University

A double perturbation strategy is presented to solve the asymptotic solutions of a Johnson-Segalman （J-S） fluid through a slowly varying pipe. First, a small parameter of the slowly varying angle is taken as the small perturbation parameter, and then the second-order asymptotic solution of the flow of a Newtonian fluid through a slowly varying pipe is obtained in the first perturbation strategy. Second, the viscoelastic parameter is selected as the small perturbation parameter in the second perturbation strategy to solve the asymptotic solution of the flow of a J-S fluid through a slowly varying pipe. Finally, the parameter effects, including the axial distance, the slowly varying angle, and the Reynolds number, on the velocity distributions are analyzed. The results show that the increases in both the axial distance and the slowly varying angle make the axial velocity slow down. However, the radial velocity increases with the slowly varying angle, and decreases with the axial distance. There are two special positions in the distribution curves of the axial velocity and the radial velocity with different Reynolds numbers, and there are different trends on both sides of the special positions. The double perturbation strategy is applicable to such problems with the flow of a non-Newtonian fluid through a slowly varying pipe.

关键词： Johnson-Segalman (J-S) fluid slowly varying pipe double perturbationstrategy velocity distribution

Multi-Phase Meta-Heuristic for Multi-Depots Vehicle Routing Problem

在线全文

学校读者我要写书评

暂无评论

Journal of Software Engineering and Applications 2013年第3期6卷 82-86页

作者： jianping luo Xia Li Min-Rong Chen College of Information Engineering Shenzhen University Shenzhen 518060 China

In this work, we present a multi-phase hybrid algorithm based on clustering to solve the multi-depots vehicle routing problem (MDVRP). The proposed algorithm initially adopts K-means algorithm to execute the clustering analyses, which take the depots as the centroids of the clusters, for the all customers of MDVRP, then implements the local depth search using the Shuffled Frog Leaping Algorithm (SFLA) for every cluster, and then globally re-adjusts the solutions, i.e., rectifies positions of all frogs by the extremal optimization (EO). The processes will continue until the convergence criterions are satisfied. The results of experiments have shown that the proposed algorithm possesses outstanding performance to solve the MDVRP.

关键词： Combinatorial Optimization Vehicle Routing Problem Shuffled Frog Leaping Algorithm

Comprehensive Marine Observing Experiment Based on High-Altitude Large Unmanned Aerial Vehicle(South China Sea Experiment2020 of the “Petrel Project”)

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

Advances in Atmospheric Sciences 2021年第4期38卷 531-537页

作者： Xuefen ZHANG Liangxu LI Rongkang YANG Ran GUO Xia SUN jianping luo Hongbin CHEN Daxin LIU Kebing TANG Wenwu PENG Xiaodong HAN Qiyun GUO Xiaoxia LI Xikun FEI Meteorological Observation Center of the China Meteorological Administration Beijing 10081China AVIC Chengdou Aircraft Industry(Group)Co. Ltd.Chengdou 610092China Hainan Provincial Meteorological Bureau of the China Meteorological Administration Hainan 570203China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Beijing Institute of Radio Measurement China Aerospace Science and IndustryCorporationBeijing 100854China AVIC Leihua Electric Technology Research Institute Wuxi 421063China

In collaboration with 12 other institutions, the Meteorological Observation Center of the China Meteorological Administration undertook a comprehensive marine observation experiment in the South China Sea using the Yilong-10 high-altitude large unmanned aerial vehicle(UAV). The Yilong-10 UAV carried a self-developed dropsonde system and a millimeter-wave cloud radar system. In addition, a solar-powered unmanned surface vessel and two drifting buoys were used. The experiment was further supported by an intelligent, reciprocating horizontal drifting radiosonde system that was deployed from the Sansha Meteorological Observing Station, with the intent of producing a stereoscopic observation over the South China Sea. Comprehensive three-dimensional observations were collected using the system from 31 July to2 August, 2020. This information was used to investigate the formation and development processes of Typhoon Sinlaku(2020). The data contain measurements of 21 oceanic and meteorological parameters acquired by the five devices, along with video footage from the UAV. The data proved very helpful in determining the actual location and intensity of Typhoon Sinlaku(2020). The experiment demonstrates the feasibility of using a high-altitude, large UAV to fill in the gaps between operational meteorological observations of marine areas and typhoons near China, and marks a milestone for the use of such data for analyzing the structure and impact of a typhoon in the South China Sea. It also demonstrates the potential for establishing operational UAV meteorological observing systems in the future, and the assimilation of such data into numerical weather prediction models.

关键词： high-altitude large UAV marine typhoon unmanned surface vessel horizontal drifting radiosonde drifting buoy

在线全文

学校读者我要写书评

暂无评论

马克思消费力理论的内涵及其当代价值

学术研究 2019年第6期 37-42,177页

作者：罗建平华侨大学哲学与社会发展学院

马克思消费力理论蕴含于其关于消费力的经典论述中。在马克思看来,消费力是消费的首要条件和手段,它表征着消费者的个人能力和某一社会的消费资料的发展程度,与生产力辩证同一。绝对消费力与社会消费力是需要分别纳入生产力和生产关系... 详细信息

马克思消费力理论蕴含于其关于消费力的经典论述中。在马克思看来,消费力是消费的首要条件和手段,它表征着消费者的个人能力和某一社会的消费资料的发展程度,与生产力辩证同一。绝对消费力与社会消费力是需要分别纳入生产力和生产关系的范畴进行考察的两种不同消费力。当前,如何促进消费、增强消费对经济社会发展的基础性作用是一个急需解答的时代课题。中国需要充分认识马克思消费力理论的价值,从消费力角度来寻求该课题的解答路径,通过各种途径和措施,努力培育和发展当代中国的消费力。

关键词：马克思消费力理论内涵当代价值

在线全文

学校读者我要写书评

暂无评论

“统”的大一统原型及其当下意义

社会科学 2009年第3期 135-140页

作者：罗建平华东理工大学社会与公共管理学院副教授上海200237

大一统是中国政治之历史和现实的基本特征,其心理原型沉淀在"统"字中。"统"与"充"相通。"充"从育从儿,表示生命的发育成长,是自性原型的象征。就历史而言,"充"是中华先祖的原型,具有深远的统合力。而"充"又通过"中"的原型体现其大一统... 详细信息

大一统是中国政治之历史和现实的基本特征,其心理原型沉淀在"统"字中。"统"与"充"相通。"充"从育从儿,表示生命的发育成长,是自性原型的象征。就历史而言,"充"是中华先祖的原型,具有深远的统合力。而"充"又通过"中"的原型体现其大一统的原型力量。"中"的本义为"旗帜",最初标志着氏族之生活、祭祀的围合空间,进而发展为国家政治的整合空间。"中"的整合力集中地表现为"中庸",而庸从庚(钟)从用(桶),反映了"中"的感召力(钟鸣)和容器凝聚力(桶作为政治整合空间)。"中庸"与礼乐相关,通过和乐实现"中和"。中和意味着和谐,是和谐社会的本质。而和谐之"和",本义为"龢",为编管乐器,为化合不同的"音"(意见和利益)。"统"的原型体现了整体化和多元化的统一。

关键词：统充中庸和谐整合

在线全文

学校读者我要写书评

暂无评论

世界一流学科成长的逻辑与路径

中国高教研究 2021年第7期 29-34页

作者：罗建平中国教育科学研究院高等教育研究所北京100088

一流学科是"双一流"建设的重点和基础,一流学科的成长是知识不断分化与融合的演进过程,也是国家需求和社会发展的时代诉求。从"生态进化"与"制度优化"的视角阐释一流学科成长的范式转换和规训方式转变,深入挖掘一流学科成长的演进机理... 详细信息

一流学科是"双一流"建设的重点和基础,一流学科的成长是知识不断分化与融合的演进过程,也是国家需求和社会发展的时代诉求。从"生态进化"与"制度优化"的视角阐释一流学科成长的范式转换和规训方式转变,深入挖掘一流学科成长的演进机理。一流学科建设面向国家重大需求、加强学科增值评价和学科治理是新一轮"双一流"内涵建设的重要内容,也是评价一流学科建设成效的重要支撑。

关键词：世界一流学科学科成长逻辑生态进化制度优化

A NEW ALGORITHM FOR DETECTING THE TRANSITION REGION ON NOISE IMAGE

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 2003年第4期20卷 279-284页

作者： Wang Hui luo jianping(Faculty of Information Eng., Shenzhen University, Shenzhen 518060) Faculty of Information Eng. Shenzhen University Shenzhen

An algorithm of ramp width reduction based on the gray information of neighborhood pixels is proposed, which can sharpen the ramp edge effectively. Then, a new gray-weighted gradient operator and the automatic method to determine its parameter are introduced when detecting the transition region of images. Gray-weighted gradient operator can not only make the correlation of gradient and gray information as big as possible, but also resist the noise in the images. Some experiments show that the algorithm in this paper can extract the transition region more effectively.

关键词： Ramp edge Width reduction Transition region Gray-weighted gradient operator

Analysis of Nonpolar Components from Ginseng of Different Ages

在线全文

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2013年第1期4卷 92-97页

作者： Yizhen Zhang Xunan Lyu Tao Liu jianping luo Wenju Zhang Qing Mu School of Biology and Food Engineering Hefei University of Technology Hefei China School of Biology Science Fudan University Shanghai China School of Pharmacy Fudan University Shanghai China

Nonpolar components from ginseng of different ages were extracted and analysed using a GC-MS technique to determine their chemical compositions. In total, 23 ingredients, mostly aliphatic compounds, were identified. The compounds extracted included 10,12-octadecadiynoic acid (12.81% - 36.43%), falcarinol (4.95% - 36.79%), n-hexadecanoic acid (0.60% - 9.70%), 9,12-octadecadienoic acid, ethyl ester (0.33% - 5.63%), 5,7-dodecadiyn-1,12-diol (0.97% - 3.85%), (Z)-9-octadecenamide (2.66% - 5.38%) and (Z,Z)-9,12-octadecadienoic acid (0.46% - 5.27%). The two major diyne compositions, falcarinol (8) and 10,12-octadecadiynoic acid (12), were the predominant components (over 50%) of the nonpolar extract of older ginseng. Moreover, the 10,12-octadecadiynoic acid obviously accumulated as the ginseng grew. Sitosterol, a universal metabolite in higher plants, makes up 55.80% of the content of 6-year-old ginseng, but markedly decreases in older ginseng. There was not much difference between the extracts of 8, 10, 12 and 16-year ginsengs, but the extracts of 6-year-old ginseng were distinctive.

关键词： Ginseng Old-Age Ginseng Nonpolar Composition GC-MS Falcarinol 10 12-Octadecadiynoic Acid