检索结果-南通市图书馆

The explicit symmetry breaking solutions of the Kadomtsev-Petviashvili equation

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2020年第11期72卷 1-10页

作者： Zheng-Yi Ma jin-xi fei Quan-Yong Zhu Wei-Ping Cao Institute of Nonlinear Analysis and Department of Mathematics Lishui UniversityLishui 323000China Institute of Optoelectronic Technology and Department of Photoelectric Engineering Lishui UniversityLishui 323000China Department of Mathematics Zhejiang Sci-Tech UniversityHangzhou 310018China

To describe two correlated events,the Alice-Bob(AB)systems were constructed by Lou through the symmetry of the shifted parity,time reversal and charge *** this paper,the coupled AB system of the Kadomtsev-Petviashvili equation,which is a useful model in natural science,is *** introducing an extended Backlund transformation and its bilinear formation,the symmetry breaking soliton,lump and breather solutions of this system are derived with the aid of some ansatze *** show these fascinating symmetry breaking structures of the explicit solutions.

关键词： Backlund transformation ansatze function P^xsP^ysTd symmetric breaking solution AB-KP system

The D’Alembert type waves and the soliton molecules in a (2+1)-dimensional Kadomtsev-Petviashvili with its hierarchy equation

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2021年第10期73卷 14-22页

作者： Hui-Ling Wu Sheng-Wan Fan jin-xi fei Zheng-Yi Ma Institute of Nonlinear Analysis and Department of Mathematics Lishui UniversityLishui 323000China Institute of Optoelectronic Technology and Department of Photoelectric Engineering Lishui UniversityLishui 323000China Department of Mathematics Zhejiang Sci-Tech UniversityHangzhou 310018China

For a one(2+1)-dimensional combined Kadomtsev-Petviashvili with its hierarchy equation, the missing D’Alembert type solution is derived first through the traveling wave transformation which contains several special kink molecule structures. Further, after introducing the B?cklund transformation and an auxiliary variable, the N-soliton solution which contains some soliton molecules for this equation, is presented through its Hirota bilinear form. The concrete molecules including line solitons, breathers and a lump as well as several interactions of their hybrid are shown with the aid of special conditions and parameters. All these dynamical features are demonstrated through the different figures.

关键词： Kadomtsev-Petviashvili equation soliton molecule breather/lump soliton elastic interaction

在线全文

学校读者我要写书评

暂无评论

双曲线法在软土地基沉降预测中的适用性研究

浙江水利科技 2008年第5期36卷 47-48,50页

作者：金锡斐江维文温岭市东海塘围涂工程指挥部浙江温岭317500

沉降是软土地基极为重要的工程特性,是岩土工程界一直致力解决的难题。目前用于沉降分析的方法很多,而且各有特色,双曲线法就是其中最常用的方法之一。基于温岭东海塘的道路沉降实测资料,对双曲线法的适用性进行探讨。结果表明,双曲线... 详细信息

沉降是软土地基极为重要的工程特性,是岩土工程界一直致力解决的难题。目前用于沉降分析的方法很多,而且各有特色,双曲线法就是其中最常用的方法之一。基于温岭东海塘的道路沉降实测资料,对双曲线法的适用性进行探讨。结果表明,双曲线法预测宜选择沉降曲线后段,预测误差较小,精度较高,可以用于指导工程后期施工实践。

关键词：软土地基沉降双曲线法预测适用性

Co-production of hydrogen, oxygen, and electricity via an integrated solar-driven system with decoupled water electrolyzer and Na-Zn ion battery

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 621-627页

作者： fei Lv Longjie Liu Jiazhe Wu Pengfei Wang Lixia Pan Dengwei jing Yubin Chen International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University

Combining water electrolysis and rechargeable battery technologies into a single system holds great promise for the co-production of hydrogen （H2） and ***,the design and development of such systems is still in its ***,an integrated hydrogen-oxygen （O2）-electricity co-production system featuring a bipolar membrane-assisted decoupled electrolyzer and a Na-Zn ion battery was established with sodium nickelhexacyanoferrate （NaNiHCF） and Zn2+/Zn as dual redox *** decoupled electrolyzer enables to produce H2and O2in different time and space with almost 100%Faradaic efficiency at 100 mA ***,the charged NaNiHCF and Zn electrodes after the electrolysis processes formed a Na-Zn ion battery,which can generate electricity with an average cell voltage of 1.75 V at 10 m A *** connecting Si photovoltaics with the modular electrochemical device,a well-matched solar driven system was built to convert the intermittent solar energy into hydrogen and electric energy with a solar to hydrogen-electricity efficiency of 16.7%,demonstrating the flexible storage and conversion of renewables.

关键词： Hydrogen Electricity Decoupled water electrolyzer Na-Zn ion battery Solar energy

Complex Wave Excitations in Generalized Broer-Kaup System

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2007年第4X期48卷 657-661页

作者： ZHENG Chun-Long fei jin-xi College of Mathematics and Physics Lishui University Lishui 323000 China Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China

Starting from an improved projective method and a linear variable separation approach, new families of variable separation solutions （including solltary wave solutlons, periodic wave solutions and rational function solutions） with arbitrary functions [or the （2＋ 1）-dimensional general/zed Broer-Kaup （GBK） system are derived. Usually, in terms of solitary wave solutions and/or rational function solutions, one can find abundant important localized excitations. However, based on the derived periodic wave solution in this paper, we reveal some complex wave excitations in the （2＋1）-dimensional GBK system, which describe solitons moving on a periodic wave background. Some interesting evolutional properties for these solitary waves propagating on the periodic wave bactground are also briefly discussed.

关键词： improved projective method GBK system exact solution complex wave excitation

Adsorption Behavior of CH2 and CH3 on Metal Clusters CUn （n=1-6）

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2008年第5期21卷 445-450页

作者： xi-hui Cheng Ming-xing jin Zhan Hu fei-fei Hu Da-jun Ding Institute of Atomic and Molecular Physics Jilin University Changchun 130012 China

Using density functional theory with generalized gradient approximation and hybrid functional, we studied the properties of energy, charge population, and vibration of CH2 and CH3 adsorbed on Cun （n=1-6） clusters. The results show that the DFT calculation with the hybrid functional matches the experimental results better in both cases. The calculation results indicate that the adsorption of CH2 is stronger than that of CH3. During adsorption, the charges transfer from Cu to CH2 or CH3. The obtained vibrational frequencies for different modes of CH2 and CH3 adsorbed on Cun agree well with the experimental results for the adsorption on Cu（111） surface.

关键词： Adsorption CH2 CH3 Cu cluster

New Families of Exact Excitations to （2＋1）-Dimensional Toda Lattice System via an Extended Projective Approach

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

Communications in Theoretical Physics 2006年第5期45卷 864-868页

作者： FANG Jian-Ping fei jin-xi ZHENG Chun-Long College of Physics and Mathematics Lishui University Lishui 323000 China Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072China

In this paper, the extended projective approach, which was recently presented and successfully used in some continuous nonlinear physical systems, is generalized to nonlinear partial differential-difference systems （DDEs）, As a concrete example, new families of exact solutions to the （2＋1）-dimensional Toda lattice system are obtained by the extended projective approach.

关键词： extended projective approach DDEs Toda lattice exact solution

山姜素调节cAMP/PKA/CREB信号通路促进骨质疏松性骨折大鼠骨折愈合

在线全文

学校读者我要写书评

暂无评论

中国组织工程研究 2025年第12期29卷 2438-2443页

作者：陆飞周静金涛连云港市第一人民医院康复医学科江苏省连云港市222000 南京医科大学康达学院康复医学部江苏省连云港市222000 中国人民解放军东部战区总医院健康医学科江苏省南京市210018

背景:山姜素具有抗炎、抗肿瘤、抗菌等作用,已被证实能够缓解骨质疏松症,但山姜素对骨质疏松性骨折的影响及机制仍不清楚。目的:探讨山姜素调节环磷酸腺苷/蛋白激酶A/环磷酸腺苷反应元件结合蛋白信号通路对骨质疏松性骨折大鼠的改善作... 详细信息

背景:山姜素具有抗炎、抗肿瘤、抗菌等作用,已被证实能够缓解骨质疏松症,但山姜素对骨质疏松性骨折的影响及机制仍不清楚。目的:探讨山姜素调节环磷酸腺苷/蛋白激酶A/环磷酸腺苷反应元件结合蛋白信号通路对骨质疏松性骨折大鼠的改善作用。方法:采用双侧卵巢切除手术构建骨质疏松症骨折大鼠模型,将成功造模大鼠依据随机数字表法分为山姜素低、中、高剂量组、抑制剂组和模型组,另选12只大鼠作为假手术组。骨折造模当天,山姜素低、中、高剂量组大鼠灌胃7.5,15,30 mg/kg的山姜素+腹腔注射等量的生理盐水,抑制剂组灌胃30 mg/kg的山姜素+腹腔注射5 mg/kg的H-89(通路抑制剂),模型组与假手术组给予(灌胃+腹腔注射)等量生理盐水,1次/d,连续8周。放射性检查评估大鼠骨折愈合情况并进行愈合评分;骨密度扫描仪测定骨折处骨密度;通过三点弯曲实验和压缩实验评估大鼠股骨生物力学状况;苏木精-伊红染色观察大鼠骨折处病理损伤;酶联免疫吸附(ELISA)法检测血清碱性磷酸酶、骨钙素和Ⅰ型胶原交联C-末端肽、环磷酸腺苷水平的变化;Western blot检测股骨组织中骨形态发生蛋白2和环磷酸腺苷/蛋白激酶A/环磷酸腺苷反应元件结合蛋白通路蛋白表达。结果与结论:①相较于假手术组,模型组大鼠骨折愈合评分、骨密度、最大负荷、最大应力、碱性磷酸酶、骨钙素、环磷酸腺苷水平、骨形态发生蛋白2、磷酸化蛋白激酶A/蛋白激酶A、磷酸化环磷酸腺苷反应元件结合蛋白/环磷酸腺苷反应元件结合蛋白表达下降,Ⅰ型胶原交联羧基末端肽水平增加(P<0.05);与模型组比较,山姜素各剂量组大鼠上述各项指标呈现相反的变化(P<0.05);与山姜素高剂量组比较,抑制剂组大鼠上述指标变化均被逆转(P<0.05)。②结论:山姜素可能通过激活环磷酸腺苷/蛋白激酶A/环磷酸腺苷反应元件结合蛋白信号通路加速骨质疏松症骨折大鼠的骨折愈合。

关键词：山姜素环磷酸腺苷/蛋白激酶A/环磷酸腺苷反应元件结合蛋白骨质疏松骨折愈合大鼠

Interaction of major facilitator superfamily domain containing 2A with the blood-brain barrier

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2133-2152页

作者： Yilun Ma Taiwei Dong fei Luan Juanjuan Yang Feng Miao Peifeng Wei College of Pharmacy and First Clinical Medical College Shaanxi University of Chinese MedicineXianyangShaanxi ProvinceChina National Drug Clinical Trial Agency The Second Affiliated Hospital of Shaanxi University of Chinese Medicine/Xixian New District Central HospitalXi′anShaanxi ProvinceChina

The functional and structural integrity of the blood-brain barrier is crucial in maintaining homeostasis in the brain microenvironment;however,the molecular mechanisms underlying the formation and function of the blood-brain barrier remain poorly *** major facilitator superfamily domain containing 2A has been identified as a key regulator of blood-brain barrier *** plays a critical role in promoting and maintaining the formation and functional stability of the blood-brain barrier,in addition to the transport of lipids,such as docosahexaenoic acid,across the blood-brain ***,an increasing number of studies have suggested that major facilitator superfamily domain containing 2A is involved in the molecular mechanisms of blood-brain barrier dysfunction in a variety of neurological diseases;however,little is known regarding the mechanisms by which major facilitator superfamily domain containing 2A affects the blood-brain *** paper provides a comprehensive and systematic review of the close relationship between major facilitator superfamily domain containing 2A proteins and the blood-brain barrier,including their basic structures and functions,cross-linking between major facilitator superfamily domain containing 2A and the blood-brain barrier,and the in-depth studies on lipid transport and the regulation of blood-brain barrier *** comprehensive systematic review contributes to an in-depth understanding of the important role of major facilitator superfamily domain containing 2A proteins in maintaining the structure and function of the blood-brain barrier and the research progress to *** will not only help to elucidate the pathogenesis of neurological diseases,improve the accuracy of laboratory diagnosis,and optimize clinical treatment strategies,but it may also play an important role in prognostic *** addition,the effects of major facilitator superfamily domain containing 2A on blood-brain barrier lea

关键词： blood-brain barrier(BBB) caveolin-1 central nervous system docosahexaenoic acid endothelial cells lysophosphatidylcholine major facilitator superfamily domain containing 2A(MFSD2A) transcytosis