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Retrospective analysis of pathological types and imaging features in pancreatic cancer: A comprehensive study

World Journal of Gastrointestinal Oncology 2025年第1期17卷 121-129页

作者： Yang-Gang Luo mei wu Hong-Guang Chen Pathology Department Xuanhan County People’s HospitalDazhou 636150Sichuan ProvinceChina

BACKGROUND Pancreatic cancer remains one of the most lethal malignancies worldwide,with a poor prognosis often attributed to late *** the correlation between pathological type and imaging features is crucial for early detection and appropriate treatment *** To retrospectively analyze the relationship between different pathological types of pancreatic cancer and their corresponding imaging *** We retrospectively analyzed the data of 500 patients diagnosed with pancreatic cancer between January 2010 and December 2020 at our *** types were determined by histopathological examination of the surgical spe-cimens or biopsy *** imaging features were assessed using computed tomography,magnetic resonance imaging,and endoscopic *** analyses were performed to identify significant associations between pathological types and specific imaging *** There were 320(64%)cases of pancreatic ductal adenocarcinoma,75(15%)of intraductal papillary mucinous neoplasms,50(10%)of neuroendocrine tumors,and 55(11%)of other rare *** imaging features were identified in each pathological *** ductal adenocarcinoma typically presents as a hypodense mass with poorly defined borders on computed tomography,whereas intraductal papillary mucinous neoplasms present as characteristic cystic lesions with mural *** tumors often appear as hypervascular lesions in contrast-enhanced *** analysis revealed significant correlations between specific imaging features and pathological types(P<0.001).CONCLUSION This study demonstrated a strong association between the pathological types of pancreatic cancer and imaging *** findings can enhance the accuracy of noninvasive diagnosis and guide personalized treatment approaches.

关键词： Pancreatic cancer Pathological types Imaging features Retrospective analysis Diagnostic accuracy

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NUMERICAL SIMULATION FOR 2D SHALLOW WATER EQUATIONS BY USING GODUNOV-TYPE SCHEME WITH UNSTRUCTURED MESH

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Journal of Hydrodynamics 2006年第4期18卷 475-480页

作者： PAN Cun-hong DAI shi-qiang CHEN Sen-mei Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200436 China Zhejiang Institute of Hydraulics and Estuary Hangzhou 310020 China Shanghai Institute of Applied Mathematics and Mechanics Shanghai University. Shanghai 200436 China Zhejiang Institute of Hydraulics and Estuary Hangzhou 310020. China

In order to establish a well-balanced scheme, 2D shallow water equations were transformed and solved by using the Finite Volume Method （FVM） with unstructured mesh. The numerical flux from the interface between cells was computed with an exact Riemann solver, and the improved dry Riemann solver was applied to deal with the wet/dry problems. The model was verified through computing some typical examples and the tidal bore on the Qiantang River. The results show that the scheme is robust and accurate, and could be applied extensively to engineering problems.

关键词： 2D shallow water equations Finite Volume Method (FVM) unstructured mesh Godunov-type scheme Riemann solver

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Hot deformation behavior and microstructure evolution of TiC–Al_2O_3/Al composites

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Rare Metals 2015年第10期34卷 725-730页

作者： Rui-Ying Zhang Zhi-Ming shi Xiu-mei Zhang School of Materials Science and Engineering Inner Mongolia University of Technology Key Laboratory of Light Metal Materials

Hot compression behavior of TiC–Al2O3/Al composites was studied using the Gleeble-1500 system at a temperature range of 300–550 °C and at strain rate range of 0.01–10.00 s-1. The associated structural changes were studied by TEM observations. The results show that stress level decreases with deformation temperature increasing and strain rate decreasing, which can be represented by a Zener–Hollomon parameter in an exponent-type equation with hot deformation activation energy Q of 172.56 kJ·*** recovery occurs easily when strain rates are less than 10.00 s-1. Dynamic recrystallization can occur at strain rate of 10.00 s-1.

关键词： TiC–Al2O3/Al composites Hot deformation Flow stres

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Energy and Exergy Efficiency Analysis of Advanced Adiabatic Compressed Air Energy Storage Based Trigeneration Energy Hub

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CSEE Journal of Power and Energy Systems 2023年第6期9卷 2409-2422页

作者： Danman wu Wei Wei Jiayu Bai Shengwei mei the State Key Laboratory of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China

With growing public awareness of decarbonization and increasing penetration of renewable generation,energy storage is in great *** adiabatic compressed air energy storage(AA-CAES)is capable of producing power,heating and cooling,making it an ideal choice of an environmental-friendly energy *** paper proposes an energy and exergy efficiency analysis for an AA-CAES based trigeneration energy *** of power storage and heat load supply rates on energy output efficiency and total exergy losses are *** on the proposed model,optimal configuration of power storage and heat load supply rates can be determined under different *** to basic thermodynamic principles,the proposed method calculates trigeneration capability estimates considering energy grade difference and multi-dimension energy distribution,which can demonstrate more energy conversion properties of the *** studies verify that the proposed method can provide various characteristic analyses for an energy hub and its application in actual systems proves computation *** energy efficiency is improved compared to pursuing maximum electricity-to-electricity efficiency.

关键词： AA-CAES energy and exergy efficiency trigeneration

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A relaxation scheme for a multi-class Lighthill-Whitham-Richards traffic flow model

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第12期10卷 1835-1844页

作者： Jian-zhong CHEN Zhong-ke shi Yan-mei HU College of Automation Northwestern Polytechnical University Xi 'an 710072 China College of Science Chang 'an University Xi 'an 710064 China

We present a high-resolution relaxation scheme for a multi-class Lighthill-Whitham-Richards (MCLWR) traffic flow model. This scheme is based on high-order reconstruction for spatial discretization and an implicit-explicit Runge-Kutta method for time integration. The resulting method retains the simplicity of the relaxation schemes. There is no need to involve Riemann solvers and characteristic decomposition. Even the computation of the eigenvalues is not required. This makes the scheme particularly well suited for the MCLWR model in which the analytical expressions of the eigenvalues are difficult to obtain for more than four classes of road users. The numerical results illustrate the effectiveness of the presented method.

关键词： Relaxation scheme Multi-class LWR model Traffic flow CWENO reconstruction Implicit-explicit Runge-Kutta

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Development of chromatographic technologies for the quality control of Traditional Chinese Medicine in the Chinese Pharmacopoeia

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Journal of Pharmaceutical Analysis 2021年第2期11卷 155-162页

作者： Ming-Rui Shen Yi He Shang-mei shi Chinese Pharmacopoeia Commission No.11 Fahua NanliBeijing100061China

As an important branch of medicine, Traditional Chinese Medicine(TCM) has been applied for the treatment of diseases for thousands of years in China and other countries in East Asia. The Chinese Pharmacopoeia(ChP) is a drug code formulated by the Chinese government, and it includes a special volume for the monographs of TCM, which plays an important role in ensuring the quality of drugs. The use of quality control technology has always been a complex and important factor in TCM. Owing to the chemical diversity of TCM, chromatography technology has been proven to be a comprehensive strategy for the assessment of the overall quality of TCM and has become the main analytical method in the *** article provides an overview of the classical and modern chromatographic technologies applied in the ChP, and summarizes the advantages and disadvantages of each technique in the TCM *** 2020, the new edition of the Ch P(the 2020 edition) has been implemented at the end of 2020. This paper also contains a brief introduction about the application of chromatographic technologies in the new edition of the ChP.

关键词： Traditional Chinese medicine Chinese pharmacopoeia Chromatographic technology Quality control

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Photo-Dimerization Characteristics of Coumarin Pendants within Amphiphilic Random Copolymer Micelles

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Chinese Journal of Polymer Science 2015年第8期33卷 1086-1095页

作者： Huan Chang mei shi Ya-nan Sun 江金强 Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry & Chemical EngineeringShaanxi Normal University Shandong Vocational College of Industry

The photo-dimerization characteristics of coumarin pendants within amphiphilic random copolymer micelles in aqueous solution was comprehensively investigated using various selected wavelength light in the UV-Vis-NIR region. The time-dependent photo-dimerization degree （PD） changes in the photo-dimerization experiments showed saturating behaviors with intensity-independent of PDmax values at 28%, 44%, 92%, 85%, 36%, 35%, 32% and 31% for 254, 288, 320, 360, 400, 500, 650 and 900 nm irradiations, respectively. The irradiation experiments at 254 and 288 nm announced the occurring of an asymmetric equilibrium of photo-dimerization and photo-cleavage at the used conditions. Both the alternative irradiation cycles of 360 and 254 nm, 650 and 254 nm showed a partially, but evidently reversible photo-dimerization tendency.

关键词： Polymer micelles Coumarin UV-Vis-NIR Photo-dimerization Photo-cleavage.

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Fully Nonlinear Time Domain Analysis for Hydrodynamic Performance of An Oscillating Wave Surge Converter

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China Ocean Engineering 2018年第5期32卷 582-592页

作者： SUN shi-yan SUN shi-li wu Guo-xiong School of Naval Architecture & Ocean Engineering Jiangsu University of Science and Technology College of shipbuilding Engineering Harbin Engineering University Department of Mechanical Engineering University College London

The hydrodynamic behaviour of an oscillating wave surge converter(OWSC) in large motion excited by nonlinear waves is investigated. The mechanism through which the wave energy is absorbed in the nonlinear system is analysed. The mathematical model used is based on the velocity potential theory together with the fully nonlinear boundary conditions on the moving body surface and deforming free surface. The problem is solved by the boundary element method. Numerical results are obtained to show how to adjust the mechanical properties of the OWSC to achieve the best efficiency in a given wave, together with the nonlinear effect of the wave height. Numerical results are also provided to show the behaviour of a given OWSC in waves of different frequencies and different heights.

关键词： wave energy oscillating wave surge converter nonlinear wave/structure interactions boundary element method

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Larval diet affects development and reproduction of East Asian strain of the fall armyworm,Spodoptera frugiperda

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Journal of Integrative Agriculture 2021年第3期20卷 736-744页

作者： HE Li-mei WANG Teng-li CHEN Yu-chao GE shi-shuai Kris AGWYCKHUYS wu Kong-ming State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Institute of Applied EcologyFujian Agriculture and Forestry UniversityFuzhou 350002P.R.China

In December 11,2018,the fall armyworm(FAW),Spodoptera frugiperda invaded China and has since impacted local maize,sorghum and other ***,we draw on laboratory experiments to show how different host crops(i.e.,maize,sorghum,wheat and rice)and artificial diet affect larval growth and adult reproduction of one local FAW *** diet affected development duration,pupation rate,survival and emergence rate of pupae,and *** adult *** attained the slowest larval development(19.4 days)on sorghum and the fastest(14.1 days)on artificial diet,with larvae attaining 99.6%survival on the latter food *** rice,FAW larvae attained survival rate of 0.4%and were unable to pupate *** rate and pupal survival varied substantially between artificial diet and live plantlets at different phenological *** weight was the highest(0.26 g)on artificial diet and the lowest(0.14 g)on sorghum,while FAW females reached the highest fecundity(699.7 eggs/female)on 2-leaf stage *** hatching rate equaled 93.6%on 4-or 5-leaf stage maize and 36.6%on artificial *** intrinsic rate of natural increase and the finite rate of increase varied between larval diets,reflecting how young maize leaves are the most suitable *** findings can help to refine laboratory rearing protocols,devise population forecasting models or guide the deployment of‘area-wide’integrated pest management(IPM)modules in FAW-invaded areas of China and other Asian countries.

关键词： developmental duration development fecundity life history insect mass-rearing biology invasion biology

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Investigation on Electronic Structures and Spectra for the Substituted Fullerene C_(77)B^-

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Chinese Journal of Structural Chemistry 2006年第6期25卷 694-698页

作者： wu shi TENG Qi-Wen Department of Chemistry Zhejiang University Hangzhou 310027 China

The structures and stabilities of all the 21 possible isomers for C77B^- based on C78 （C2v） were studied by the INDO series of methods. The most two stable geometries are C77B^-（10） and C77B^-（7）, where B（10） and B（7） are located at the apexes among two hexagons and a pentagon near the shortest axis of C78 （C2v）, and the former is more stable than the latter by 0.1902 eV. Based on the optimized geometries, the electronic spectra of the C77B^- isomers were investigated with the INDO/CIS method and the electronic transitions were assigned. The reason for the red-shift of the first absorption peaks for C77B^- compared with that of C78 （C2v） was discussed.

关键词： C77B^- electronic spectra INDO

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