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New Complexiton Solutions of (2+1)-Dimensional Nizhnik-Novikov-Veselov Equations

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Communications in Theoretical Physics 2006年第9期46卷 407-414页

作者： zhang yuan-yuan,~+ ZHENG ying, zhang Hong-Qing Department of Applied Mathematics, Dalian University of Technology, Dalian 116024, China Department of Applied Mathematics Dalian University of Technology Dalian 116024 China

In this paper, we extend the multiple Riccati equations rational expansion method by introducing a new ansatz. Using this method, many complexiton solutions of the (2+1)-dimensional Nizhnik-Novikov-Veselov equations are obtained which include various combination of hyperbolic and trigonometric periodic function solutions, various combination of hyperbolic and rational function solutions, various combination of trigonometric periodic and rational function solutions, etc. The method can be also used to solve other nonlinear partial differential equations.

关键词： rational expansion method (2+1)-dimensional Nizhnik Novikov-Veselov equations complexiton solutions

New Complexiton Solutions of （2＋1）-Dimensional Nizhnik-Novikov-Veselov Equations

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Communications in Theoretical Physics 2006年第3X期46卷 407-414页

作者： zhang yuan-yuan ZHENG ying zhang Hong-Qing Department of Applied Mathematics Dalian University of Technology Dalian 116024 China

In this paper, we extend the multiple Riccati equations rational expansion method by introducing a new ansatz. Using this method, many complexiton solutions of the （2＋ 1 ）-dimensional Nizhnik-Novikov-Veselov equations are obtained which include various combination of hyperbolic and trigonometric periodic function solutions, various combination of hyperbolic and rational function solutions, various combination of trigonometric periodic and rational function solutions, etc. The method can be also used to solve other nonlinear partial differential equations.

关键词： rational expansion method (2+1)-dimensional Nizhnik-Novikov-Veselov equations complexiton solutions

Dynamic Properties of Two-Dimensional Polydisperse Granular Gases

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Communications in Theoretical Physics 2007年第2X期48卷 343-347页

作者： LI Rui zhang Duan-Ming HUANG Ming-Tao SU Xiang-ying CHEN Zhi-yuan ZHU Hong-ying zhang Lin Department of Physics Huazhong University of Science and Technology Wuhan 430074 China

We propose a two-dimensional model of polydisperse granular mixtures with a power-law size distribution in the presence of stochastic driving. A fractal dimension D is introduced as a measurement of the inhomogeneity of the size distribution of particles. We define the global and partial granular temperatures of the multi-component mixture. By direct simulation Monte Carlo, we investigate how the inhomogeneity of the size distribution influences the dynamic properties of the mixture, focusing on the granular temperature, dissipated energy, velocity distribution, spatial clusterization, and collision time. We get the following results： a single granular temperature does not characterize a multi-component mixture and each species attains its own ＂granular temperature＂; The velocity deviation from Gaussian distribution becomes more and more pronounced and the partial density of the assembly is more inhomogeneous with the increasing value of the fractal dimension D; The global granular temperature decreases and average dissipated energy per particle increases as the value olD augments.

关键词： fractal fractal dimension polydisperse mixture

Perfluoroalkylation of aromatics

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Chinese Journal of Chemistry 1993年第3期11卷 272-279页

作者： HUANG,Wei-yuan ying,Wei-Wen zhang,Han-Zhong LIU,Jin-Tao Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032 Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032

Several methods for the perfluoroalkylation of aromatics were *** per- fluoroalkanesulfonyl bromide/BPO and perfluoroalkanesulfinate/oxidant systems were efficient reagents for the introduction of a pcrfluoroalkyl group onto various aromatic *** a two-phase solvent system with tetraalkylammonium salt as PTC,rcaction of perfluoroalkyl iodide and aromatics in the presence of sodium dithionitc gave perfluoroalkyl aromatics and/or addition-dimerization products.

关键词： ppm CF SH Perfluoroalkylation of aromatics CTMAB CDC

New Explicit Solutions of the Generalized (2 + 1)-Dimensional Zakharov-Kuznetsov Equation

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Applied Mathematics 2012年第6期3卷 523-527页

作者： Gang-Wei Wang Xi-Qiang Liu ying-yuan zhang School of Mathematics Sciences Liaocheng University Liaocheng China

his paper studies the generalized (2 + 1)-dimensional Zakharov-Kuznetsov equation using the (G'/G)-expand method, we obtain many new explicit solutions of the generalized (2 + 1)-dimensional Zakharov-Kuznetsov equation, which include hyperbolic function solutions, trigonometric function solutions and rational function solutions and so on.

关键词： Zakharov-Kuznetsov Equation The (G'/G)-Expand Method Homogeneous Balance Principle Explicit Solutions

Mechanism Analyses for Elucidating the Role of LOXL2 Silencing in Hepatocellular Carcinoma

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Journal of Agricultural Science and Technology(A) 2015年第5期5卷 370-379页

作者： Ling-Hong Wu yuan zhang ying Zhu Qing-Wei Cong Yan Xiang Lin-Lin Fu Department of Infectious Disease the First Affiliated Hospital of Dalian Medical University Dalian 116011 Liaoning ProvinceChina

The paper aimed to study the effect of lysyl oxidase-like 2 （LOXL2） on hepatocellular carcinoma （HCC） and explore the biological mechanisms of tumorigenicity and progression in HCC. The authors used four HCC cell lines to identify LOXL2. A lentiviral vector containing LOXL2-siRNA was constructed to silence the LOXL2 gene in SMMC-7721 cell line, and mRNA of the target gene was detected by real-time polymerase chain reaction （RT-PCR）. The effect of LOXL2 silencing on the growth of SMMC-7721 cells was explored with flow cytometry profiling and BrdU labeling. Downstream genes of LOXL2 were selected by microarray and verified by Western Blotting. In the results, LOXL2 expression was significantly up-regulated in four types of HCC cell lines, therefore, SMMC-7721 cell line was selected for further exploration. When SMMC-7721 cell line was infected with LOXL2-siRNA, the expression of LOXL2 mRNA decreased. The silencing of LOXL2 resulted in the cell cycle arrest at the G 1-phase, the increased apoptosis and the decreased growth of SMMC-7721 cells on the indicated days by BrdU. Moreover, the MDM2, BIRC3, CDC42, FOS and TGFBR2 genes were selected and verified to be the downstream genes of LOXL2. In conclusion, LOXL2 contributes to the genesis and progression of HCC cells and works by regulating downstream genes of LOXL2 in certain pathways. Therefore, LOXL2 may play an important role in the progression and prognosis of HCC.

关键词： HCC LOXL2 SMMC-7721 cell line RNA interference (RNAi) mechanism analyses.

Application value research of swallowing treatment device combined with swallowing rehabilitation training in the treatment of swallowing disorders after stroke

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World Journal of Clinical Cases 2024年第21期12卷 4618-4625页

作者： Huan Xu Mei Chen Yu-Li Wu Ya-Fen Lu Xin Wang Wei Jiang yuan-ying zhang Department of Brain Disease Yixing Traditional Chinese Medicine HospitalYixing 214200Jiangsu ProvinceChina

BACKGROUND Stroke is a common disabling disease,whether it is ischemic stroke or hemorrhagic stroke,both can result in neuronal damage,leading to various manifestations of neurological *** To explore of the application value of swallowing treatment device combined with swallowing rehabilitation training in the treatment of swallowing disorders after *** This study selected 86 patients with swallowing disorders after stroke admitted to our rehabilitation department from February 2022 to December 2023 as research *** were divided into a control group(n=43)and an observation group(n=43)according to the *** control group received swallowing rehabilitation training,while the observation group received swallowing treatment device in addition to the *** groups underwent continuous intervention for two courses of *** The total effective rate in the observation group(93.02%)was higher than that in the control group(76.74%)(P=0.035).After intervention,the oral transit time,swallowing response time,pharyngeal transit time,and laryngeal closure time decreased in both groups compared to before *** the observation group,the oral transit time,swallowing response time,and pharyngeal transit time were shorter than those in the control group after ***,the laryngeal closure time after intervention in the observation group was compared with that in the control group(P=0.142).After intervention,average amplitude value and duration of the genioglossus muscle group during empty swallowing and swallowing 5 mL of water are reduced compared to before intervention in both *** intervention,the scores of the chin-tuck swallowing exercise and the Standardized Swallowing Assessment are both reduced compared to pre-intervention levels in both ***,the observation group scores lower than the control group after ***,the Functional Oral Intake Scale scores of both g

关键词： Swallowing therapy device Swallowing rehabilitation training Stroke Swallowing disorder Swallowing function

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

The dopaminergic system and Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2495-2512页

作者： Yuhan zhang yuan Liang Yixue Gu International Medical College Chongqing Medical UniversityChongqingChina College of Pharmacy Chongqing Medical UniversityChongqingChina Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of NeurologyChongqingChina

Alzheimer's disease is a common neurodegenerative disorder in older *** its prevalence,its pathogenesis remains unclea *** addition to the most widely accepted causes,which in clude excessive amyloid-beta aggregation,tau hyperphosphorylation,and deficiency of the neurotransmitter acetylcholine,numerous studies have shown that the dopaminergic system is also closely associated with the occurrence and development of this *** is a crucial catecholaminergic neurotransmitter in the human ***-associated treatments,such as drugs that target dopamine receptor D and dopamine analogs,can improve cognitive function and alleviate psychiatric symptoms as well as ameliorate other clinical *** r,therapeutics targeting the dopaminergic system are associated with various adverse reactions,such as addiction and exacerbation of cognitive *** review summarizes the role of the dopaminergic system in the pathology of Alzheimer's disease,focusing on currently available dopamine-based therapies for this disorder and the common side effects associated with dopamine-related *** aim of this review is to provide insights into the potential connections between the dopaminergic system and Alzheimer's disease,thus helping to clarify the mechanisms underlying the condition and exploring more effective therapeutic options.

关键词： adverse drug reaction Alzheimer's disease catecholamine dopamine receptor dopamine receptor heterodimers dopaminergic system neurodegenerative disease neurotransmitter signaling pathways traditional Chinese medicine treatment