检索结果-南通市图书馆

A Padé-Aided Analysis of Nonperturbative NN Scattering in ^1S0 Channel

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2007年第4期47卷 699-704页

作者： YANG Ji-Feng huang jian-hua Department of Physics East China Normal University Shanghai 200062 China

We carried out a Padé approximant analysis on a compact factor of the T-matrlx for NN scattering to explore the nonperturbative renormalization prescription in a universal manner. The utilities and virtues for this ... 详细信息

关键词： nucleon-nucleon interactions nonperturbative renormalization Padé approximent

科罗索酸对阿霉素诱导的H9c2心肌细胞的保护作用

在线全文

学校读者我要写书评

暂无评论

中成药 2024年第2期46卷 451-457页

作者：贾享贺武斌杨秋实黄建华锦州医科大学附属第一医院辽宁锦州121000

目的探讨科罗索酸对阿霉素诱导的H9c2心肌细胞的保护作用及其机制。方法筛选并确定科罗索酸浓度,建立1μmol/L阿霉素诱导H9c2心肌细胞损伤模型,加入不同浓度科罗索酸共同处理24 h,MTT法检测细胞活性,Hoechst 33342染色法检测细胞核凋亡... 详细信息

目的探讨科罗索酸对阿霉素诱导的H9c2心肌细胞的保护作用及其机制。方法筛选并确定科罗索酸浓度,建立1μmol/L阿霉素诱导H9c2心肌细胞损伤模型,加入不同浓度科罗索酸共同处理24 h,MTT法检测细胞活性,Hoechst 33342染色法检测细胞核凋亡形态,Annexin V-FITC/PI双染法检测细胞凋亡率,DCFH-DA探针检测细胞内ROS水平,铁离子比色法检测细胞内铁水平,Western blot法检测细胞Bax、Bcl-2、cleaved-caspase3、Nrf2、GPX4及Ptgs2蛋白表达。结果科罗索酸能够提高阿霉素诱导的H9c2心肌细胞的活力及存活率(P<0.05),降低ROS、Fe^(2+)水平及凋亡率(P<0.05);上调Bcl-2、Nrf2及GPX4蛋白表达(P<0.05),下调Bax、cleaved-caspase3及Ptgs2蛋白表达(P<0.05)。结论科罗索酸能抑制阿霉素诱导的H9c2心肌细胞ROS水平及细胞凋亡,并激活Nrf2/GPX4通路抑制细胞铁死亡。

关键词：科罗索酸阿霉素心肌损伤凋亡铁死亡活性氧 Nrf2/GPX4通路

Lethaclado acid A and B from Lethariella cladonioides

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2007年第12期18卷 1515-1517页

作者： Xin huang Jun Li jian hua Shen Jun hua Chen Drug Discovery and Design Centre State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 201203 PR China

Two new compounds, lethaclado acid A （1） and B （2）, were isolated from the acetone extract ofLethariella cladonioides. Their structures were elucidated on the basis of 1D and 2D NMR as well as ESI-MS spectral data.

关键词： Lethariella cladonioides Depside Depsidone Lethaclado acid A Lethaclado acid B

Maintenance of cooperation induced by punishment in public goods games

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2010年第10期19卷 20-24页

作者： Wang Zhen Xu Zhao-Jin huang jian-hua Zhang Lian-Zhong School of Physics Nankai University Tianjin 300071 China School of Science Tianjin University of Technology Tianjin 300384 China

In this paper, we study the public goods games with punishment by adopting the well-known approximate best response dynamics. It shows that the evolution of cooperation is affected by two aspects when other parameters are fixed. One is the punishment mechanism which can avoid the dilemma of lacking investment, and the other is the degree of rationality. Theoretical analysis and numerical results indicate that the existence of punishment mechanism and distribution of rationality are the keys to the enhancement of cooperation level. We also testify that they can heavily influence the payoffs of system as well. The findings in this paper may provide a deeper understanding of some social dilemmas.

关键词： public goods games punishment degree of rationality evolution

Shen-Jing as a Chinese Medicine Concept Might Be a Counterpart of Stem Cells in Regenerative Medicine

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2019年第1期25卷 64-70页

作者： REN Yan-bo huang jian-hua CAI Wai-jiao SHEN Zi-yin Institute of Integrated Chinese and Western Medicine Huashan Hospital Fudan University

As the epitome of the modern regenerative medicine, stem cells were proposed in the basic sense no more than 200 years ago. However, the concept of "stem cells" existed long before the modern medical description. The hypothesis that all things, including our sentient body, were generated from a small origin was shared between Western and Chinese people. The ancient Chinese philosophers considered Jing(also known as essence) as the origin of life. In Chinese medicine(CM), Jing is mainly stored in Kidney(Shen) and the so-called Shen-Jing(Kidney essence). Here, we propose that Shen-Jing is the CM term used to express the meaning of "origin and regeneration". This theoretical discovery has at least two applications. First, the actions underlying causing Shen-Jing deficiency, such as excess sexual intercourse, chronic diseases, and aging, might damage the function of stem cells. Second, a large number of Chinese herbs with Shen-Jing-nourishing efficacy had been proven to affect stem cell proliferation and differentiation. Therefore, if Shen-Jing in CM is equivalent with stem cells in regenerative medicine, higher effective modulators for regulating stem-cell behaviors from Kidney-tonifying herbs would be expected.

关键词： Shen-Jing Kidney essence Kidney tonifying herbs regenerative medicine stem cells

Parasitoid wasps as effective biological control agents

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2019年第4期18卷 705-715页

作者： WANG Zhi-zhi LIU Yin-quan SHI Min huang jian-hua CHEN Xue-xin Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Zhejiang University State Key Lab of Rice Biology Zhejiang University Institute of Insect Sciences Zhejiang University

Biological control(biocontrol) is a safe, sustainable approach that takes advantage of natural enemies such as predators, parasitic insects or pathogens to manage pests in agroecosystems. Parasitoid wasps, a very large evolutionary group of hymenopteran insects, are well-known biological control agents for arthropod pests in agricultural and forest ecosystems. Here, we summarize the recent progress on the application of parasitoid wasps in biocontrol in China for the last five years. These include species diversity of parasitoid wasps, identification of dominant parasitoid wasps associated with insect pests and biocontrol practices(three types of biological control, i.e., classical, augmentative and conservation biological control) in several Chinese agroecosystems. We then treat different mass-rearing and release technologies and the commercialization of several parasitoid wasp species. We also summarize other work that may have a potential use in biocontrol, including the effect of plant volatiles on parasitoids and recent advance in the molecular mechanisms underlying the host regulation by parasitoid wasps. Future research area and applied perspectives are also discussed, noting that advances in biocontrol technologies in Chinese agriculture informs research at the global level.

关键词： parasitoid wasp predator biological control/biocontrol biological control/biocontrol agent cereal crop vegetable crop mass-rearing field release plant volatile parasitoid-host interaction

In situ Simulation of Thermal Reality

在线全文

学校读者我要写书评

暂无评论

Research 2024年第2期2023卷 685-690页

作者： Peng Jin Jinrong Liu Fubao Yang Fabio Marchesoni jian-hua jiang Jiping huang Department of Physics State Key Laboratory of Surface Physicsand Key Laboratory of Micro and Nano Photonic Structures(MOE)Fudan UniversityShanghai 200438China Center for Phononics and Thermal Energy Science Shanghai Key Laboratory of Special Artificial Microstructure Materials and TechnologySchool of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Physics University of CamerinoCamerino 62032Italy Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China

Simulated reality encompasses virtual,augmented,and mixed realities梕ach characterized by different degrees of truthfulness in the visual perception:"all false","coexistence of true and false,"and"difficult distinction between true and false,"*** all these technologies,however,the temperature rendering of virtual objects is still an unsolved ***,the lack of thermal tactile functions substantially reduces the quality of the user's real-experience *** address this challenge,we propose theoretically and realize experimentally a technological platform for the in situ simulation of thermal *** this purpose,we design a thermal metadevice consisting of a reconfigurable array of radiating units,capable of generating the thermal image of any virtual object,and thus rendering it in situ together with its thermal *** is a substantial technological advance,which opens up new possibilities for simulated reality and its applications to human activities.

关键词： false rendering signature

Selective and asymmetric ion transport in covalent organic framework-based two-dimensional nanofluidic devices

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

International Journal of Smart and Nano Materials 2024年第1期15卷 186-197页

作者： Li-Qiu huang Shuang Chen Ri-jian Mo Zhong-Qiu Li Xing-hua Xia State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjingChina

Two-dimensional(2D)covalent organic framework(COF)mem-branes featuring well-aligned and programmable vertical nano-channels have emerged as a promising candidate for advanced nanofluidic devices and showcased vast potential in the fields of smart-gating,ion-separation,and ***,the transverse interlayer nanochannels with a height of sub-nanometer-scale in 2D-COF membranes have scarcely been studied in ***,we report the ion transport characteristics in 2D interlayer nanochannels of protonated CoF *** dis-tinct surface-charge-governed ionic conductance in domination of electrolyte concentration below 1o-3 M as well as the exceptional anion/cation(Cl^(-)/K^(+))selectivity is revealed due to the pronounced charge and nano-confinement ***,evident ion current rectification is witnessed when incorporating asymmetric geometry into the system,which is attributed to the dynamic process of ion enrichment and dissipation within the protonated *** work offers immense prospects for 2D-COF membranes in the fields of biomimetic nanofluidic devices and cutting-edge electronic devices.

关键词： Two-dimensional covalent organic framework interlayernanochannels ion transport characteristics nanofluidic device

Multi-Branch Fault Line Location Method Based on Time Difference Matrix Fitting

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

Energy Engineering 2024年第1期121卷 77-94页

作者： hua Leng Silin He jian Qiu Feng Liu Xinfei huang Jiran Zhu School of Electrical and Information Engineering Hunan UniversityChangsha410082China Distribution Network Technical Center State Grid Hunan Electric Power Research InstituteChangsha410007China Technical Center China Energy Construction Group Hunan Thermal Power ConstructionZhuzhou412011China School of Electrical and Information Engineering Changsha University of Science and TechnologyChangsha410076China

The distribution network exhibits complex structural characteristics,which makes fault localization a challenging *** when a branch of the multi-branch distribution network fails,the traditional multi-branch fault location algorithm makes it difficult to meet the demands of high-precision fault localization in the multi-branch distribution network *** this paper,the multi-branch mainline is decomposed into single branch lines,transforming the complex multi-branch fault location problem into a double-ended fault location *** on the different transmission characteristics of the fault-traveling wave in fault lines and non-fault lines,the endpoint reference time difference matrix S and the fault time difference matrix G were *** time variation rule of the fault-traveling wave arriving at each endpoint before and after a fault was comprehensively *** realize the fault segment location,the least square method was *** was used to find the first-order fitting relation that satisfies the matching relationship between the corresponding row vector and the first-order function in the two matrices,to realize the fault segment ***,the time difference matrix is used to determine the traveling wave velocity,which,combined with the double-ended traveling wave location,enables accurate fault location.

关键词： Multi-branch lines distribution network fault location double-ended traveling wave positioning least square method