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Chinese Chemical Letters 2022年第12期33卷 5013-5022页

作者： Heshan Zheng Yunying Hou Shuo Li jun ma jun Nan Tong Li College of Chemistry and Chemical Engineering Qiqihar UniversityQiqihar 161006China Urban Water Resources Development and Northern National Engineering Research Center Harbin 150090China School of Environment Harbin Institute of TechnologyHarbin 150090China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China

Metal-organic frameworks(MOFs)materials with highly ordered and porous crystalline structure,have excellent performance in advanced oxidation progresses(AOPs)for organic contaminants degradation in water *** review intends to summarize the timely references and insights for the recent advances in MOFs that are used in *** with the preparation methodologies,including conventional hydrothermal method,electrochemical method,sol-gel method,and emerging microwave and ultrasound assisted synthesis *** and mechanism for MOFs using in various AOPs of Fenton-like,photocatalysis,catalytic ozonation,persulfate catalysis and other emerging oxidation methods are emphatically *** hope this review can comprehensively summarize the research and application progress of MOFs in AOPs,deepen the understanding of the catalytic mechanisms.

关键词： Advanced oxidation progresses Metal-organic frameworks Contaminants degradation Synthesis methods Catalysis mechanism

Performance Comparison of Two Meta-Model for the Application to Finite Element Model Updating of Structures

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Journal of Harbin Institute of Technology(New Series) 2014年第3期21卷 68-78页

作者： Yang Liu De-jun Wang jun ma Yang Li School of Transportation Science and Engineering Harbin Institute of Technology

To investigate the application of meta-model for finite element( FE) model updating of structures,the performance of two popular meta-model,i. e.,Kriging model and response surface model( RSM),were compared in detail. Firstly,above two kinds of meta-model were introduced briefly. Secondly,some key issues of the application of meta-model to FE model updating of structures were proposed and discussed,and then some advices were presented in order to select a reasonable meta-model for the purpose of updating the FE model of structures. Finally,the procedure of FE model updating based on meta-model was implemented by updating the FE model of a truss bridge model with the measured modal parameters. The results showed that the Kriging model was more proper for FE model updating of complex structures.

关键词： finite element model updating of structures meta-model kriging model response surface model

Reinforcing effect of laminate structure on the fracture toughness of Al3Ti intermetallic

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International Journal of Minerals,Metallurgy and materials 2020年第5期27卷 678-686页

作者： Yang Cao Dan-dan Zhang Pei-jun Zhou Kun Liu Wu-yi Ming jun ma Mechanical and Electrical Engineering Institute Zhengzhou University of Light IndustryZhengzhou 450002China Key Laboratory of Superlight materials&Surface Technology Ministry of Education Harbin Engineering UniversityHarbin 150001China

Metal/intermetallic laminate composites can improve the mechanical properties of intermetallic materials using metal layers. In recent years, titanium aluminide intermetallics have received increasing attention due to their excellent performance properties, such as high melting point, high specific strength and stiffness, and good corrosion resistance. However, the low fracture toughness of Al3Ti alloys at room temperature has greatly limited their application, and fiber or particle reinforcement has not shown a significant toughening effect. Research into the reinforcing effects of the interface and near-interface zone on the fracture behavior of Al3Ti is lacking. Ti/Al3Ti metal/intermetallic laminate composite was synthesized from titanium and aluminum foils using vacuum hot-pressed sintering technology. The microstructure of the prepared material was analyzed by scanning electron microscope and electron backscattered diffraction. Results illustrate that both Ti and Al3Ti were single-phase and there was a noticeable stress concentration on the interface. To obtain indentation and cracks, loads were applied to different locations of the composite by a microhardness tester. The growth path of the cracks was then observed under microscope, showing that crack propagation was prevented by the interface between the Ti and Al3Ti layers, and the cracks that propagated parallel to the laminate shifted to the interface. Fracture toughness of the different areas, including Al3Ti layers, interface, and near-interface zone, were measured by the indentation fracture method. The fracture toughness at and near the interface was 1.7 and 2 times that of the Al3Ti layers, respectively. Results indicate that crack blunting and crack front convolution by the laminate structure was primarily responsible for increased toughness.

关键词： interface titanium tri-aluminide intermetallic titanium/titanium tri-aluminide metal/intermetallic laminate composite toughening effect indentation fracture method

Low-Spin Identical Bands in Non-adjacent Odd-A and Even-Even Nuclei

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Chinese Physics Letters 1997年第4期14卷 255-258页

作者： ma Ying-jun LIU Yun-zuo Department of Physics Jilin UniversityChangchun 130023

A great number of low-spin identical bands in pairs of odd-A and their non-adjacent even-even nuclei in a region of A=150-190 are found,this fact seems to support the idea that the occurrence of identical bands in neighboring odd-A and even-even nuclei is caused by the cancellation of various factors which influence the moments of inertia of nuclei.

关键词： identical bands Even

Comprehensive analysis of the expression and prognosis for APOE in malignancies: A pan-cancer analysis

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Oncology Research 2022年第1期30卷 13-22页

作者： SHOUKAI YU LINGMEI QIAN jun ma Hongqiao International Institute of Medicine&Clinical Research Center Tongren HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Clinical Research Institute Shanghai Jiao Tong University School of MedicineShanghaiChina Harvard T.H.Chan School of Public Health Harvard UniversityBostonUSA

Apolipoprotein E(APOE),a gene identiﬁed as one of the strongest genetic factors contributing to the risk determinant of developing late-onset Alzheimer’s disease(AD),may also contribute to the risk of ***,no pan-cancer analysis has been conducted speciﬁcally for the APOE *** this study,we investigated the oncogenic role of the APOE gene across cancers by GEO(Gene Expression Omnibus)and TCGA(The Cancer Genome Atlas).Based on the available data,we found that most cancer types overexpress APOE,and clear associations exist between the expression level of APOE and prognosis in tumor *** expression of APOE also correlates with certain gender-associated tumors including,ovarian cancer,uterine carcinosarcoma,and breast ***,there is a signiﬁcant negative association between cancer-associatedﬁbroblast inﬁltration levels and the expression level of APOE in testicular germ cell ***,acute inﬂammatory response and protein-activation cascade-associated functions play an important role in the functional mechanisms of *** present pan-cancer analysis of APOE shows that the protein phosphorylation,DNA methylation,and genetic alterations of APOE have a signiﬁcant clinical relevance for survival prognosis and immune cell inﬁ*** novel pan-cancer study outlines the current understanding of APOE oncogenic roles across thirty-three cancers and highlights the complex association between AD and cancers.

关键词： APOE Pan-cancer Bioinformatics Alzheimer’s disease

Destruction of Spiral Wave Using External Electric Field Modulated by Logistic map

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Communications in Theoretical Physics 2007年第4期47卷 675-678页

作者： ma jun CHEN Yong JIN Wu-Yin Department of Physics Lanzhou University of Technology Lanzhou 730050 China Institute of Theoretical Physics Lanzhou University Lanzhou 730000 China School of Mechanical and Electronical Engineering Lanzhou University of Technology Lanzhou 730050 China

Evolution of spiral wave generated from the excitable media within the Barkley model is investigated. The external gradient electric field modulated by the logistic map is imposed on the media （along x- and y-axis）. Drift and break up of spiral wave are observed when the amplitude of the electric field is modulated by the chaotic signal from the logistic map, and the whole system could become homogeneous finally and the relevant results are compared when the gradient electric field is modulated by the Lorenz or Rossler chaotic signal.

关键词： spiral wave Barkley model logistic map

Abscisic acid and ethephon regulation of cellulase in the endosperm cap and radicle during lettuce seed germination

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Journal of Integrative Plant Biology 2016年第10期58卷 859-869页

作者： Bingxian Chen jun ma Zhenjiang Xu Xiaofeng Wang Seed Science and Technology Lab College of Life SciencesSouth China Agricultural University Agro-biological Gene Research Center Guangdong Academy of Agricultural Sciences

The purpose of this study was to investigate the role of cellulase in endosperm cap weakening and radicle elongation during lettuce （Lactuco sotiva L.） seed germination. The application of abscisic acid （ABA） or ethephon inhibits or promotes germination, respectively, by affecting endosperm cap weakening and radicle elongation. Cellulase activities, and related protein and transcript abundances of two lettuce cellulase genes, LsCEL1 and LsCEL2, increase in the endosperm cap and radicle prior to radicle protrusion following imbibition in water, ABA or ethephon reduce or elevate, respectively, cellulase activity, and related protein and transcript abundan- ces in the endosperm cap. Taken together, these observations suggest that celiulase plays a role in endosperm cap weakening and radicle elongation during lettuce seed germination, and that the regulation of cellulase in the endosperm cap by ABA and ethephon play a role in endosperm cap weakening. However, the influence of ABA and ethephon on radicle elongation may not be through their effects on cellulase.

关键词： Abscisic acid cellulase ethephon endosperm cap weakening lettuce seed germination

A reaction-difusion model with nonlinearity driven difusion

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Applied mathematics(A Journal of Chinese Universities) 2013年第3期28卷 290-302页

作者： ma man-jun HU Jia-jia ZHANG jun-jie TAO Ji-cheng Department of mathematics College of Sciences China Jiliang University School of mathematics and Physics University of South China

In this paper, we deal with the model with a very general growth law and an M- driven diffusion For the general case of time dependent functions M and #, the existence and uniqueness for positive solution is obtained. If M and # are T0-periodic functions in t, then there is an attractive positive periodic solution. Furthermore, if M and # are time-independent, then the non-constant stationary solution M（x） is globally stable. Thus, we can easily formulate the conditions deriving the above behaviors for specific population models with the logistic growth law, Gilpin-Ayala growth law and Gompertz growth law, respectively. We answer an open problem proposed by L. Korobenko and E. Braverman in [Can. Appl. math. Quart. 17（2009） 85-104].

关键词： general form of growttl law nonlinearity-driven diffusion periodic solution global attractivity,rate of convergence.

An Emergency Blood Allocation Approach Considering Blood Group Compatibility in Disaster Relief Operations

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International Journal of Disaster Risk Science 2019年第1期10卷 74-88页

作者： Zu-jun ma Ke-Ming Wang Ying Dai School of management Yangtze University Institute for Logistics and Emergency management School of Economics and Management Southwest Jiaotong University School of Information Science and Technology Southwest Jiaotong University

Large-scale sudden-onset disasters may cause massive injuries and thus place great pressure on the emergency blood supplies of local blood banks. When blood is in short supply, blood products gathered urgently to a local blood center should be appropriately allocated to blood banks in the affected area. Moreover, ABO/Rh(D) compatibilities among blood groups must be considered during emergency situations. To minimize the total unmet demand of blood products considering the optimal ABO/Rh(D)-compatible blood substitution scheme, a mixed integer programming model is developed and solved efficiently by using a greedy heuristic algorithm. Finally, a numerical example derived from the emergency blood supply scenario of the Wenchuan Earthquake is presented to verify the proposed model and algorithm. The results show that considering ABO/Rh(D)-compatible blood substitution can remarkably increase the efficiency of emergency blood allocation while lowering blood shortage, and the preference order of possible ABO/Rh(D)-compatible substitutions has an influence on the allocation solution.

关键词： Blood group compatibility Blood substitution Disaster relief Emergency blood allocation Greedy heuristic algorithm

Enhanced Photocatalytic Activity of ThienyI-Porphyrins-TiO2 for Degradation of 4-Nitrophenol

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Chinese Journal of Chemistry 2013年第2期31卷 230-236页

作者： Wangyang ma jun Li Jingzhou Liu Meng Feng Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry qf Education College of Chemistry and material Science Northwest University Xi'an Shannxi 710069 China

5-Mono-（2-thienyl）-10,15,20-triphenyl porphyrin （H2MTP） and its Co（II）, Cu（II）, Zn（ll） metalloporphyrins （CoMTP, CuMTP, ZnMTP） were synthesized and characterized spectroscopically. The corresponding Co（ll）, Cu（ll）, Zn（II） metalloporphyrins-TiO2 photocatalysts were then prepared and characterized by means of scanning electron microscopy （SEM）, energy dispersive spectrometer （EDS）, UV-vis spectra and FT-IR. The photocatalytic activities of these photocatalysts were investigated by testing the photodegradation of 4-nitrophenol （4-NP） in aqueous solution under irradiation with high-pressure mercury lamp and metal halide lamp respectively. The results indicated that these metalloporphyrins greatly enhanced the photocatalytic efficiency of bare TiO2 in degradating the 4-NP, and CuMTP-TiO2 exhibited the highest photocatalytic activity of all photocatalysts. In addition, the first order rate constants of these photocatalytic reactions were calculated.

关键词： thienyl-appended porphyrin metalloporphyrin titanium dioxide photocatalytic degradation 4-nitrophenol