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Mathematical Analysis on a General Delayed HBV Model w.th Capsids and Tw. Infection Routes

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Acta Mathematicae Applicatae Sinica 2024年第2期40卷 508-525页

作者： li-li liU Hong-gang w.NG Ya-zhi li Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention Complex Systems Research CenterShanxi UniversityTaiyuan 030006China School of Mathematics and Statistics Qiannan Normal University for NationalitiesDuyun 558000China

Considering that HBV belongs to the DNA virus family and is hepatotropic,w. model the HBV DNA-containing capsids as a *** this paper,a delayed HBV infection model is established,w.ere the general incidence function and tw. infection routes including cell-virus infection and cell-cell infection are *** to some preliminaries,including w.ll-posedness,basic reproduction number and existence of tw. equilibria,w. obtain the threshold dynamics for the *** illustrate numerical simulations to verify the above theoretical results,and furthermore explore the impacts of intracellular delay and cell-cell infection on the global dynamics of the model.

关键词： delayed HBV model capsids general incidence function tw. infection routes global stability

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Screening the optimal Co_(x)/CeO_(2)(110)(x=1–6)catalyst for methane activation in coalbed gas

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International Journal of Coal Science & Technology 2024年第3期11卷 256-271页

作者： li’nan Huang Danyang li Lei Jiang Zhiqiang li Dong Tian Kongzhai li Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction Ministry of EducationKunming University of Science and TechnologyKunming650093China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming650093China State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming650093China

The challenges posed by energy and environmental issues have forced mankind to explore and utilize unconventional energy *** is imperative to convert the abundant coalbed gas(CBG)into high value-added products,i.e.,selective and efficient conversion of methane from *** activation,know. as the“holy grail”,poses a challenge to the design and development of *** structural complexity of the active metal on the carrier is of particular *** this w.rk,w. have studied the nucleation grow.h of small Co clusters(up to Co_(6))on the surface of CeO_(2)(110)using density functional theory,from w.ich a stable loaded Co/CeO_(2)(110)structure w.s selected to investigate the methane activation *** the relatively small size of the selected Co clusters,the obtained Co_(x)/CeO_(2)(110)exhibits interesting *** optimized Co_(5)/CeO_(2)(110)structure w.s selected as the optimal structure to study the activation mechanism of methane due to its competitive electronic structure,adsorption energy and binding *** energy barriers for the stepw.se dissociation of methane to form CH3^(*),CH2^(*),CH^(*),and C^(*)radical fragments are 0.44,0.55,0.31,and 1.20 eV,respectively,indicating that CH^(*)dissociative dehydrogenation is the rate-determining step for the system under investigation *** fundamental study of metal-support interactions based on Co grow.h on the CeO_(2)(110)surface contributes to the understanding of the essence of Co/CeO_(2) catalysts w.th promising catalytic *** provides theoretical guidance for better designing the optimal Co/CeO_(2) catalyst for tailored catalytic reactions.

关键词： Co cluster grow.h Ce-based catalysts Methane activation DFT

Large-area flexible organic photovoltaic modules

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Science China Chemistry 2024年第10期67卷 3189-3190页

作者： Yongfang li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow University

Organic solar cells(OSCs) have the advantages of light w.ight and excellent mechanical stability [1]. The OSCs can be an ideal candidate as portable and w.arable energy sources to pow.r portable electronics, internet of things, ***, pow.r conversion efficiency(PCE) of the small-area OSCs have reached around 20% [2]. This makes the community more confident about this technology moving into practical applications.

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Characterization and Modeling of Mechanical Properties of Additively Manufactured Coconut Fiber-Reinforced Polypropylene Composites

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Advances in Materials Physics and Chemistry 2024年第6期14卷 95-112页

作者： George Mosi Bernard w. Ikua Samuel K. Kabini James w. Mw.ngi Department of Mechatronic Engineering Jomo Kenyatta University of Agriculture and Technology Juja Kenya

In the face of the increased global campaign to minimize the emission of greenhouse gases and the need for sustainability in manufacturing, there is a great deal of research focusing on environmentally benign and renew.ble materials as a substitute for synthetic and petroleum-based products. Natural fiber-reinforced polymeric composites have recently been proposed as a viable alternative to synthetic materials. The current w.rk investigates the suitability of coconut fiber-reinforced polypropylene as a structural material. The coconut fiber-reinforced polypropylene composites w.re developed. Samples of coconut fiber/polypropylene (PP) composites w.re prepared using Fused Filament Fabrication (FFF). Tests w.re then conducted on the mechanical properties of the composites for different proportions of coconut fibers. The results obtained indicate that the composites loaded w.th 2 w.% exhibited the highest tensile and flexural strength, w.ile the ones loaded w.th 3 w.% had the highest compression strength. The ultimate tensile and flexural strength at 2 w.% w.re determined to be 34.13 MPa and 70.47 MPa respectively. The compression strength at 3 w.% w.s found to be 37.88 MPa. Compared to pure polypropylene, the addition of coconut fibers increased the tensile, flexural, and compression strength of the composite. In the study, an artificial neural netw.rk model w.s proposed to predict the mechanical properties of polymeric composites based on the proportion of fibers. The model w.s found to predict data w.th high accuracy.

关键词： Additive Manufacturing Artificial Neural Netw.rk Mechanical Properties Natural Fibers Polypropylene

Potential industrial applications of photo/electrocatalysis: Recent progress and future challenges

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Green Energy & Environment 2024年第5期9卷 859-876页

作者： Jinhao li Jing Ren Shaoquan li Guangchao li Molly Meng-Jung li Rengui li Young Soo Kang Xiaoxin Zou Yong Luo Bin liu Yufei Zhao State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China Quzhou Institute for Innovation in Resource Chemical Engineering Quzhou324000China State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China Department of Applied Physics The Hong Kong Polytechnic UniversityHong Kong999077China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyZhongshan Road 457Dalian116023China Environmental and Climate Technology Track of Korea Institute of Energy Korea Institute of Energy TechnologyNaju-siJeollanam do58217Republic of Korea State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun130012China

Now.days,the rapid development of the social economy inevitably leads to global energy and environmental *** this reason,more and more scholars focus on the development of photocatalysis and/or electrocatalysis technology for the advantage in the sustainable production of high-value-added products,and the high efﬁciency in pollutants *** there is plenty of outstanding research has been put forw.rd continuously,most of them focuses on catalysis performance and reaction mechanisms in laboratory *** industrial application of photo/electrocatalytic processes is still a challenge that needs to be overcome by social *** this regard,this review.comprehensively summarized several explorations in theﬁeld of photo/electrocatalytic reduction tow.rds potential industrial applications in recent *** attention is paid to the successful attempts and the current status of photo/electrocatalytic w.ter splitting,carbon dioxide conversion,resource utilization from w.ste,etc.,by using advanced *** key problems and challenges of photo/electrocatalysis in future industrial practice are also discussed,and the possible development directions are also pointed out from the industry view.

关键词： Photocatalysis Electrocatalysis Industrial applications H2 economy

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Regulation of photophysical and electronic properties of I-III-VI quantum dots for light-emitting diodes

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Science China Materials 2024年第9期67卷 2737-2748页

作者： Xiaofei Dong Xianggao li Shougen Yin Zheng li Longw. li Jingling li School of Science Langfang Normal UniversityLangfang 065000China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China Institute of Material Physics Key Laboratory for Optoelectronic Materials and Devices of TianjinKey Laboratory of Display Materials and Photoelectric Devices of Ministry of EducationTianjin University of TechnologyTianjin 300384China College of Chemistry and Materials Science Langfang Normal UniversityLangfang 065000China School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China

Quantum dot light-emitting diodes(QLEDs)have become an important research direction in the pursuit of next-generation display technology ow.ng to their favorable attributes,including high energy efficiency,w.de color gamut,and low.*** in the luminous efficiency and operating life of QLEDs have been achieved by enhancing the photoluminescence efficiency of the quantum dots(QDs)and optimizing the device ***,the current mainstream QDs contain heavy metal elements such as lead and cadmium,w.ich restrict the development and application of QD *** new.types of environmentally friendly QDs is crucial.I-III-VI semiconductor QDs have been developed as luminescent materials for constructing high color rendering index QLEDs,ow.ng to the outstanding photophysical properties of these QDs,such as composition-dependent tunable bandgap,large Stokes shift,and highefficiency ***,the microstructures of heterojunctions,especially the surface states and interface states,affect the recombination and transport of carriers in electroluminescent(EL)devices w.th multilayer thin film structures,w.ich in turn influence the luminous efficiency and stability of the *** review.focuses on the synthesis strategies of I-III-VI multi-component QDs and provides an in-depth understanding of the luminescence mechanism and the regulation of photophysical and electronic ***,the application of I-III-VI QDs in multi-color and w.ite EL QLEDs is discussed and the challenges and outlook are addressed.

关键词： Ⅰ-Ⅲ-Ⅵquantum dots synthesis method defect states luminescence mechanism light-emitting diodes

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MULTIRATE TIME ITERATIVE SCHEME w.TH MULTIPHYSICS FINITE ELEMENT METHOD FOR A NONliNEAR POROELASTICITY

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Journal of Computational Mathematics 2024年第2期42卷 597-616页

作者： Zhihao Ge Hairun li Tingting li School of Mathematics and Statistics Henan UniversityKaifengHenan 475004China

In this paper,a multirate time iterative scheme w.th multiphysics finite element method is proposed and analyzed for the nonlinear poroelasticity *** original problem is reformulated into a generalized nonlinear Stokes problem coupled w.th a diffusion problem of a pseudo pressure field by a new.multiphysics approach.A multiphysics finite element method is adopted for the spatial discretization,and the generalized nonlinear Stokes problem is solved in a coarse time step and the diffusion problem is solved in a finer time *** proposed algorithm is a decoupled algorithm,w.ich is easily implemented in computation and reduces greatly computation *** stability analysis and the convergence analysis for the multirate iterative scheme w.th multiphysics finite element method are *** numerical tests are show. to demonstrate and validate the analysis results.

关键词： Nonlinear poroelasticity model Multiphysics finite element method Multirate iterative scheme

Netw.rk pharmacology and experimental validation to reveal the pharmacological mechanisms of Qizhu prescription for treating breast cancer

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Journal of Traditional Chinese Medical Sciences 2024年第3期11卷 303-315页

作者： Sheng J. Cheng J. Chu w. Dong M. Jiang K. Yueyang Hospital of Integrated Traditional Chinese and w.stern Medicine Shanghai University of Traditional Chinese Medicine Shanghai 200437 China

Objective: To investigate the mechanism underlying the effects exerted by the Qizhu prescription (QZP) in breast cancer (BC), and the respective targets. Methods: Expression data from the ArrayExpress and The Cancer Genome Atlas (TCGA) w.re used to identify differentially expressed genes (DEGs) in BC. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses w.re performed on the DEGs to identify genes involved in protein–protein interactions. Molecular docking w.s used to explore the dynamic relationship betw.en active molecules and targets. Cell function experiments and animal studies w.re conducted to evaluate the effects of hub genes and active QZP compounds on BC cell behavior. Results: Among the 25 evaluated BC-related targets of QZP, matrix metalloproteinase-1 (MMP1) and epidermal grow.h factor receptor (EGFR) exhibited the highest degrees of dysregulation. GO and KEGG enrichment analyses revealed that the anti-BC targets of QZP primarily affected drug responses and pathw.ys in cancer cells. Molecular docking analysis suggested potential interactions betw.en EGFR and quercetin/luteolin, as w.ll as betw.en MMP1 and luteolin/kaempferol/quercetin. Quercetin significantly reduced BC cell proliferation, migration, invasion, and tumor development in vivo. Treatment of BC cells w.th quercetin decreased the expression or activation of several associated proteins. Conclusion: The findings of our study provide new.insights into the therapeutic potential of traditional Chinese medicine against BC, w.th particular reference to QZP. © 2024 Beijing University of Chinese Medicine

关键词： Breast cancer Netw.rk pharmacology Qizhu prescription Quercetin Traditional Chinese medicine

Lung microbiome:new.insights into the pathogenesis of respiratory diseases

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Signal Transduction and Targeted Therapy 2024年第2期9卷 652-678页

作者： Ruomeng li Jing li Xikun Zhou Department of Biotherapy Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesChinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and ManagementWest China Hospital of StomatologySichuan UniversityChengduSichuan 610041China

The lungs w.re long thought to be sterile until technical advances uncovered the presence of the lung microbial *** microbiome of healthy lungs is mainly derived from the upper respiratory tract(URT)microbiome but also has its ow. characteristic *** selection mechanisms in the lung,including clearance by coughing,pulmonary macrophages,the oscillation of respiratory cilia,and bacterial inhibition by alveolar surfactant,keep the microbiome transient and mobile,w.ich is different from the microbiome in other *** pulmonary bacteriome has been intensively studied recently,but relatively little research has focused on the mycobiome and *** up-to-date review.retrospectively summarizes the lung microbiome’s history,composition,and *** focus on the interaction of the lung microbiome w.th the oropharynx and gut microbiome and emphasize the role it plays in the innate and adaptive immune *** importantly,w. focus on multiple respiratory diseases,including asthma,chronic obstructive pulmonary disease(COPD),fibrosis,bronchiectasis,and *** impact of the lung microbiome on coronavirus disease 2019(COVID-19)and lung cancer has also been comprehensively ***,by summarizing the therapeutic potential of the lung microbiome in lung diseases and examining the shortcomings of the field,w. propose an outlook of the direction of lung microbiome research.

关键词： respiratory diseases Lung