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Superlinear Elliptic Equation with Mixed Boundary Value in Annular Domain

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Acta Mathematica Sinica,English Series 2021年第10期37卷 1549-1559页

作者： Jian TIAN yuan hong WEI School of Mathematics Jilin UniversityChangchun 130012P.R.China

In this paper,we study superlinear elliptic equations with mixed boundary value conditions in annular *** is assumed that the nonlinearities depend on the derivative *** results about existence of solutions are establ... 详细信息

关键词： Mixed boundary value annular domain radial solution gradient term iterative method

Bionic Leaf Simulating the Thermal Effect of Natural Leaf Transpiration

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Journal of Bionic Engineering 2014年第1期11卷 90-97页

作者： Zhi yuan hong Ye Shimin Li Department of Thermal Science and Energy Engineering University of Science and Technology of China Hefei 230027 P. R. China

We proposed a kind of bionic leaf to simulate the thermal effect of leaf transpiration. The bionic leaf was firstly designed to be composed of a green coating, a water holding layer, a Composite Adsorbent （CS） layer and an adsorption-desorption rate controlling layer. A thermophysical model was established for the bionic leaf, and the dynamic simulation results reveal that the water holding layer is not necessary; a CS of high thermal conductivity should be selected as the CS layer; the adsorp- tion-desorption rate controlling layer could be removed due to the low adsorption-desorption rate of the CS; and when CaC12 mass fraction of the CS reaches 40%; the bionic leaf could simulate the dynamic thermal behavior of the natural leaf. Based on the simulation results, we prepared bionic leaves with different CaC12 content. The thermographies of the bionic leaf and the natural leaf were shot using the Infrared Thermal Imager. The measured average radiative temperature difference between the bionic and natural leaves is less than 1.0 ℃.

关键词： bionic leaf composite sorbent transpiration thermal effect leaf temperature

INTERFACIAL BEHAVIOR OF PIPE JOINTS UNDER TORSION LOADS

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Acta Mechanica Solida Sinica 2015年第5期28卷 521-535页

作者： Jun Han hong yuan Jiayu Wu MOE Key Lab of Disaster and Control in Engineering Institute of Applied Mechanics Jinan University

The interfacial behavior of pipe joints is studied in this paper. Firstly, through nonlinear fracture mechanics, the analytical expressions of interfacial shear stress and the load- displacement relationship at loaded end of pipe joints under torsion loads are obtained. Thus the shear stress propagation and the debonding process of the whole interface for different bond lengths can be predicted. Secondly, through the analytical solutions, the influences of different bond lengths on the load-displacement curve and the ultimate load are studied. The stress trans- fer mechanism, the interface crack propagation and the ductility behavior of the joints can be explained.

关键词： interface failure mechanism softening debonding torsion pipe joints

Theory and calculation of stress transfer between fiber and matrix

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Applied Mathematics and Mechanics(English Edition) 2015年第6期36卷 815-826页

作者： Jiayu WU hong yuan Renhuai LIU MOE Key Laboratory of Disaster Forecast and Control in Engineering Institute of Applied Mechanics Jinan University

For the better use of composites and a deeper insight into the fracture propa- gation and stress transfer of the interface between fiber and matrix, a theoretical solution of closed form is presented with the assumed bilinear local bond-slip law and a parabolic shear stress distribution along the thickness of the matrix. The load-displacement re- lationship and interfacial shear stress are obtained for four loading stages. Finally, the effects of Young＇s modulus of fiber （matrix） and bond length on the performance of the interface are illustrated.

关键词： shear-lag method composite material interfacial mechanics

Integrating multiplicate data: A new trend for taxonomic study

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Journal of Integrative Plant Biology 2023年第9期65卷 2021-2022页

作者： De‐yuan hong State Key Laboratory of Plant Diversity and Specialty Crops Institute of BotanyChinese Academy of SciencesBeijing 100093China

Taxonomy today encompasses classification, phylogeny,and evolution (hong, 2016). Early taxonomic studies were mainly based on morphological-geographical evidence and even only on one or a few specimens, which greatly influenced researchers’ judgments. Moreover, limited observations of variation within and between populations have often resulted in misinterpretations of the relationship between groups and the inability to scientifically delimitate species.

关键词： species. phylogeny Taxonomy

Identification and quantification of the bioactive components in Osmanthus fragrans roots by HPLC-MS/MS

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Journal of Pharmaceutical Analysis 2021年第3期11卷 299-307页

作者： Xiaoyan Liao yuan hong Zilin Chen Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of EducationHubei Province Engineering and Technology Research Center for Fluorinated PharmaceuticalsSchool of Pharmaceutical SciencesWuhan UniversityWuhan430071China State Key Laboratory of Transducer Technology Chinese Academy of SciencesBeijing100080China

The roots of O. fragrans are also a valuable resource in addition to its flowers and fruits. In this study, the HPLC-MS/MS method used for analyzing the chemical constituents in O. fragrans roots extract was developed, which showed high sensitivity for both qualitative and quantitative analyses. Thirty-two compounds were first discovered in O. fragrans roots, one compound of which was reported for the first time. The simultaneous determination method for acteoside, isoacteoside, oleuropein and phillyrin was validated to be sensitive and accurate. Then it was applied to determine the content of bioactive components in O. fragrans roots from different cultivars. The content of oleuropein and phillyrin in the twelve batches was relatively stable, while the content of acteoside and isoacteoside varied ***, the therapeutic material basis and mechanism of O. fragrans roots exerting its traditional pharmacodynamics were analyzed by network pharmacology. The results showed that O. fragrans roots might be effective for the treatment of inflammation, cardiovascular diseases, cancer, and rheumatoid arthritis, which is consistent with the traditional pharmacodynamics of O. fragrans roots. This work can provide an analytical method for the comprehensive development of O. fragrans roots.

关键词： Osmanthus fragrans roots HPLC-MS/MS Identification Quantitation Bioactive constituents Network pharmacology

Surface quality of extruding metal special-shape products and frictional behavior in optimized die cavity

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 468-471页

作者： QI hong-yuan ZHU Heng-jun School of Mechanical and Electric Control Engineering Beijing Jiaotong University Beijing 100044 China School of Mechanical and Electric Control Engineering Beijing Jiaotong University Beijing 100044 China

With the help of Complex Function Mapping theory, the complicated three-dimensional deformation problems are transferred into two-dimensional problems, and the function of strain ratio field is analyzed in the metal plastic extruding deformation. Taking the strain-hardening effect of metal deformation into account, the relationship between friction behavior and optimized mathematical model is analyzed by the numerical analysis friction energy dissipation function. As a result, the method of lowering the material hardening and decreasing the reduction ratio over multi-procedures can be used to improve the surface quality of metal special-shape extrusion products.

关键词： special-shape products extrusion surface quality Conformal Mapping

Determination of bioactive components in the fruits of Cercis chinensis Bunge by HPLC-MS/MS and quality evaluation by principal components and hierarchical cluster analyses

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Journal of Pharmaceutical Analysis 2021年第4期11卷 465-471页

作者： yuan hong Xiaoyan Liao Zilin Chen Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of EducationHubei Province Engineering and Technology Research Center for Fluorinated PharmaceuticalsSchool of Pharmaceutical SciencesWuhan UniversityWuhan430071China State Key Laboratory of Transducer Technology Chinese Academy of SciencesBeijing100080China

The fruits of leguminous plants Cercis Chinensis Bunge are still overlooked although they have been reported to be antioxidative because of the limited information on the phytochemicals of *** fruits.A simple,rapid and sensitive HPLC-MS/MS method was developed for the identification and quantitation of the major bioactive components in *** *** polyphenols were identified,which are first reported in *** ***,ten components were simultaneously *** validated quantitative method was proved to be sensitive,reproducible and ***,it was applied to analyze batches of *** fruits from different phytomorph and *** principal components analysis(PCA)realized visualization and reduction of data set dimension while the hierarchical cluster analysis(HCA)indicated that the content of phenolic acids or all ten components might be used to differentiate *** fruits of different phytomorph.

关键词： C.chinensis fruits HPLC-MS/MS Polyphenols Principal components analysis Hierarchical cluster analysis

Comprehensive review of targeted therapy for colorectal cancer

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Signal Transduction and Targeted Therapy 2020年第1期5卷 2155-2184页

作者： yuan-hong Xie Ying-Xuan Chen Jing-yuan Fang Division of Gastroenterology and Hepatology Shanghai Institute of Digestive DiseaseState Key Laboratory for Oncogenes and Related GenesKey Laboratory of Gastroenterology&HepatologyMinistry of HealthRenji HospitalSchool of MedicineShanghai Jiao Tong University145 Middle Shandong Road200001 ShanghaiChina

Colorectal cancer(CRC)is among the most lethal and prevalent malignancies in the world and was responsible for nearly 881,000 cancer-related deaths in *** and chemotherapy have long been the first choices for cancer ***,the prognosis of CRC has never been satisfying,especially for patients with metastatic *** therapy is a new optional approach that has successfully prolonged overall survival for CRC *** successes with the anti-EGFR(epidermal growth factor receptor)agent cetuximab and the anti-angiogenesis agent bevacizumab,new agents blocking different critical pathways as well as immune checkpoints are emerging at an unprecedented *** worldwide are currently updating the recommended targeted drugs on the basis of the increasing number of high-quality clinical *** review provides an overview of existing CRC-targeted agents and their underlying mechanisms,as well as a discussion of their limitations and future trends.

关键词： Surgery drugs chemotherapy