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A Variable Separation Approach to Solve the Integrable and Nonintegrable Models:Coherent Structures of the (2 + 1)-Dimensional KdV Eqnation

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Communications in Theoretical Physics 2002年第7期38卷 1-8页

作者： TANG Xiao-yan lou Sen-Yue Applied Physics Department Shanghai Jiao Tong University Shanghai 200030 China Applied Physics Department Shanghai Jiao Tong University Shanghai 200030 China Physics Department Ningbo University Ningbo 315211 China

We study the localized coherent structures ofa generally nonintegrable (2+ 1 )-dimensional KdV equation via a variable separation approach. In a special integrable case, the entrance of some arbitrary functions leads to abundant coherent structures. However, in the general nonintegrable case, an additional condition has to be introduced for these arbitrary functions. Although the additional condition has been introduced into the solutions of the nonintegrable KdV equation, there still exist many interesting solitary wave structures. Especially, the nonintegrable KdV equation possesses the breather-like localized excitations, and the similar static ring soliton solutions as in the integrable case. Furthermor,in the integrable case, the interaction between two travelling ring solitons is elastic, while in the nonintegrable case we cannot find even the single travelling ring soliton solution.

关键词： variable separation approach, integrable and nonintegrable models, (2+1)-dimensional solitons

Coupled Nonlinear Schrödinger Equations and the Miura Transformation

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Chinese Physics Letters 2011年第9期28卷 4-6页

作者： lou yan ZHU Jun-Yi College of Mathematics and Information Science North China University of Water Resources and Electric PowerZhengzhou 450052 Department of Mathematics Zhengzhou UniversityZhengzhou 450052

A wide class of coupled nonlinear Schrödinger(NLS)equations are derived by virtue of the dressing method,and the associated parametric solutions are *** an illustration,the explicit solution of the coupled NLS-type equation associated withσ1 is *** Miura transformation for a AKNS-type hierarchy is established,from which a modified coupled NLS-type equation is shown to be equivalent to the Heisenberg spin equation.

关键词： equation Miura equation

CCNO mutation as a cause of primary ciliary dyskinesia:A case report

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World Journal of Clinical Cases 2022年第25期10卷 9148-9155页

作者： Yun-yan Zhang yan lou Han yan Hao Tang Department of Respiratory and Critical Care Medicine Changzheng HospitalNaval Military Medical UniversityShanghai 200003China Department of Orthopedic Oncology Spine Tumor CenterChangzheng HospitalNaval Military Medical UniversityShanghai 200003China Department of Nephrology 905th Hospital of PLA NavyNaval Military Medical UniversityShanghai 200050China

BACKGROUND Primary ciliary dyskinesia(PCD)is an uncommon and genetically diverse *** to reports,most patients had more than 50 visits before being diagnosed with PCD,and the age at diagnosis was mostly in preschool,with an average age of about(10.9±14.4)years *** is a pathogenic gene that regulates the cell cycle,and its mutation is linked to the uncommon human genetic disorder *** the prevalence of the CCNO mutation is regarded to be exceptionally low,new reports of this mutation have increased in comparison to prior *** patients with CCNO are rare,and the incidence rate is no more than 2%in whole PCD *** SUMMARY Here,we report a case of a young Chinese woman diagnosed with PCD,who was found to carry the CCNO gene by whole exon gene *** this case,a young non-smoking Chinese female exhibiting recurrent cough and sputum at *** computed tomography(CT)showed bronchiectasis with infection,and sinus CT showed chronic ***,the patient had no visceral transposition and no history of *** electron microscope,it was found that cilia were short and reduced in number,and no power arm of cilia was *** exon sequencing analysis of the genome of the patient showed that the patient carried CCNO pathogenic gene,exon c.303C>A nonsense mutation and c.248_252dup frameshift *** clinical symptoms and CT images were improved after two months of treatment with aerosol inhalation and oral *** The results showed that CCNO is an important cause of *** mutant genes that may contribute to genetically diverse disorders like PCD have been discovered as sequencing technology has ***,the increase of genetic information makes it easier to diagnose uncommon diseases in clinical practice.

关键词： Primary ciliary immobility disorder CCNO gene Whole exon gene sequencing Clinical profiles Review of literature Case report

Precipitates in Steels With Ti Additive Produced by CSP Process

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Journal of Iron and Steel Research International 2009年第4期16卷 60-66页

作者： lou yan-zhi LIU De-lu NI Xiao-qing Department of Materials Physics and Chemistry University of Science and Technology Beijing Beijing 100083 China

Hot strips of low carbon steels with Ti additive [-contain C 0.04 % -0. 07 % , Si≤0.6%, Mn≤0.6%, Ti 0. 060/00- 0.14% （mass percent）] prodvced by EAF-CSP （Electric Arc Furnaces-Compact Strip Production） process were examined by TEM, HREM and XRD. Carbonitrides with different N/C ratio were found in the sam- ples. The varying composition of the Ti-carbonitrides resulted from the supersaturation of Ti and temperature at which the compound was formed. In the tested steel, total mass fraction of the precipitates including cementite, carbonitride and a small quantity of Fe3O4, AO2O3 , Ti2 CS and A1N was about 0. 305 %. XRD results showed that about a quarter of the powder extracted by electrolysis was titanium nitrides, carbonitrides and carbides. Particle arrays formed by interphase precipitation could be observed either in slabs or in hot strips. The dominant reaction mecha- nisms were discussed. Compared with the conventional cold charge process, small amount of Ti addition would be more effective for orecipitation of fine orecioitates in the steels oroduced by CSP process.

关键词： compact strip production steel with Ti additive titanium carbonitride precipitation interphase precipitation

Electron beam welding of Re and BT5-1 titanium alloy

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Rare Metals 2005年第3期24卷 293-297页

作者： yanG Shanglei XUE Xiaohuai lou Songnian CHEN yan LI Shimin Institute of Welding Shanghai Jiaotong University Shanghai 200030 China

Based on the binary alloy phase diagram of Re-Ti, the weldability of Re and BT5-1 titanium alloy was analyzed. Using two methods of direct electron beam welding （EBW-D） and intergradafion electron beam welding （EBW-I）, Re and BT5-1 was welded. Experimental results show that the joint figuration of EBW-D between Re and BT5-1 is not fine, and the joint is inclined to brittleness rupture. The joint figuration of EBW-I between Re and BT5-1 is fine. No cracking and other disfigures occur in the intergradation joint. The element distribution of Re, Me, and Ti in the weld metal is progressional diversification.

关键词： welding intergradation layer electron beam rhenim titanim alloy

High isolation dual-element modified PIFA array for MIMO application

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The Journal of China Universities of Posts and Telecommunications 2012年第3期19卷 1-6页

作者： lou Si-yan LI Xiao-lin ZHANG Zu-fan School of Communication and Information Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China Chongqing Information Technology Designing CO. LTD. Chongqing 400065 China

In this paper, we focus on antenna array design for mobile phone with finite volume and propose a novel antenna element structure by capacitive feeding and capacitive loading method based on the planar inverted F antenna （PIFA）. State-of-the-art development on this issue is reviewed. Then, a novel capacitively fed and capacitively loaded PIFA structure is proposed and studied. The results of the experiments showed that our structure can reduce the coupling of antenna elements from - 13.4 dB to -24.5 dB. Finally, a design with a bandwidth of 100 MHz centered at 2.35 GHz and envelopment correlation coefficient of 0.01 2 is provided and the diversity performance of the dual-element modified PIFA array is evaluated in both simulation and measurement. In a word, our novel design reaches broadband, miniaturization, high isolation and offers excellent diversity performance.

关键词： MIMO PIFA isolation capacitive feed capacitive load

The inhibition mechanism of the uptake of lamivudine via human organic anion transporter 1 by Stellera chamaejasme L. extracts

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Chinese Journal of Natural Medicines 2019年第9期17卷 682-689页

作者： PAN Lan-Ying ZENG Kui LI Li lou yan ZENG Su Institute of Drug Metabolism and Pharmaceutical Analysis Zhejiang Province Key Laboratory of Anti-Cancer Drug ResearchCollege of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Laboratory of Natural Medicine School of Forestry and Bio-technologyZhejiang A&F UniversityHangzhou 311300China The First Affiliated hospital College of MedicineZhejiang UniversityHangzhou 310000China

Stellera chamaejasme *** a traditional Chinese medicine with a long history to treat stubborn skin ulcer,and it also has antiviral and antitumor *** B(NCB),Neochamaejasmine A(NCA)and Chamaechromone(CMC)are the major components in dried roots of Stellera chamaejasme L..Our studies suggested that NCB,NCA and CMC are inhibitors of Organic anion transporter 1(OAT1).OAT1 is encoded by solute carrier family 22 member 6 gene(SLC22 A6)in humans and plays a critical role in the organic anion drug uptake and excretion in the *** is the typical substrate of OAT1 and is frequently used in combination with other antiviral drugs in clinical antiviral *** aim of this study is to investigate the interaction and its mechanism between these bi-flavone components in Stellera chamaejasme *** lamivudine via OAT1 both in vitro and in *** vitro,the uptake studies in Madin-Darby canine kidney(MDCK)cells overexpressing OAT1 suggested that NCB inhibited the uptake of 6-CFL and *** results were obtained for NCA and *** was a noncompetitive and competitive inhibitor interaction with ***50 values of NCB,NCA and CMC for inhibiting OAT1-mediated lamivudine transport were 2.46,8.35 and 0.61μmol·L^–1,*** vivo,the pharmacokinetic results of lamivudine in rats showed that the mean area under the plasma concentration-time curve(AUC0-∞)and maximal plasma concentration(Cmax)of lamivudine after co-administration is increased 2.94-fold and 1.87-fold,respectively,compared to lamivudine administration *** results of interactions between lamivudine and these bi-flavone components in Stellera chamaejasme *** via OAT1 in vivo are consistent with studies in *** inhibition of OAT1-mediated uptake of lamivudine by NCB,NCA and CMC is the possible mechanism for Stellera chamaejasme *** improving the oral bioavailability of lamivudine in rats.

关键词： Lamivudine Neochamaejasmine B Neochamaejasmine A Chamaechromone OAT1 Inhibition

Influence of defect density on the ZnO nanostructures of dye-sensitized solar cells

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Advances in Manufacturing 2013年第4期1卷 340-345页

作者： yan-yan lou Shuai Yuan Yin Zhao Zhu-Yi Wang Li-Yi Shi Research Center of Nanoscience and Nanotechnology Shanghai University Laboratory for Microstructures Shanghai University

The relationship between bilayer nanostructure, defect density and dye-sensitized solar cell （DSCC） per- formances was investigated. By adjusting bilayer nano- structures, defect density of ZnO nanodendrite-nanorods structure was decreased comparing to that of nanoflower- nanorods structure. The performances of DSCC based on ZnO nanodendrites-nanorods structure and nanoflower- nanorods structure were studied by Raman spectrum, room temperature photoluminescence, dye loading, photocurrent density-voltage characteristic and open-circuit voltage decay （OCVD） technique. The device with nanodendrite- nanorods structure has lower charge recombination rate and prolonged electron lifetime due to its microstructure feature.

关键词： ZnO Bilayer Nanostructure -Nanodendrite-nanorods defect ~ Dye-sensitized solarcells

Novel nanoparticles composed of chitosan and β-cyclodextrin derivatives as potential insoluble drug carrier

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Chinese Chemical Letters 2015年第7期26卷 909-913页

作者： yan-Zuo Chen Yu-Kun Huang Yuan Chen Ya-Jing Ye Kai-yan lou Feng Gao Shanghai Key Laboratory of Functional Materials Chemistry East China University of Science and Technology Department of Pharmaceutics School of Pharmacy East China University of Science and Technology Shanghai Key Laboratory of New Drug Design East China University of Science and Technology Shanghai Institute of Health Sciences

This research was aim to develop novel cyclodextrin/chitosan （CD/CS） nanocarriers for insoluble drug delivery through the mild ionic gelation method previously developed by our lab. A series of different β- cyclodextrin （β-CD） derivatives were incorporated into CS nanoparticles including hydroxypropyl-β- cyclodextrin （HP-β-CD）, sulphobutylether-β-cyclodextrin （SB-β-CD）, and 2,6-di-O-methy-βcyclodex- trin （DM-β-CD）. Various process parameters for nanoparticle preparation and their effects on physicochemical properties of CD/CS nanoparticles were investigated, such as the type of CD derivatives, CD and CS concentrations, the mass ratio of CS to TPP （CS/TRP）, and pH values. In the optimal condition, CDICS nanoparticles were obtained in the size range of 215-276 nm and with the zeta potential from 30.22 mV to 35.79 mY. Moreover, the stability study showed that the incorporation of CD rendered the CD/CS nanocarriers more stable than CS nanoparticles in PBS buffer at pH 6.8. For their easy preparation and adjustable parameters in nanoparticle formation as well as the diversified hydrophobic core of CD derivatives, the novel CD/CS nanoparticles developed herein might represent an interesting and versatile drug delivery platform for a variety of poorly water-soluble drugs with different physicochemical properties.

关键词： Chitosan Cyclodextrin derivatives Ionic gelation method Drug delivery system