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Nomogram for overall survival in ampullary adenocarcinoma using the surveillance,epidemiology,and end results database and external validation

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World Journal of Clinical Oncology 2025年第2期16卷 36-51页

作者： Jia Yang Zi-Yi Wang jing chen Yao Zhang Lei chen Department of Gastroenterology The First Affiliated Hospital of Army Medical UniversityChongqing 400038China Department of Epidemiology College of Preventive MedicineArmy Medical UniversityChongqing 400038China

BACKGROUND Ampullary adenocarcinoma is a rare malignant tumor of the gastrointestinal ***,only a few cases have been reported,resulting in limited information on *** To develop a dynamic nomogram using internal and external validation to predict survival in patients with ampullary *** Data were sourced from the surveillance,epidemiology,and end results stat *** patients in the database were randomized in a 7:3 ratio into training and validation *** Cox regression univariate and multivariate analyses in the training group,we identified independent risk factors for overall survival and cancer-specific survival to develop the *** nomogram was validated with a cohort of patients from the First Affiliated Hospital of the Army Medical *** For overall and cancer-specific survival,12(sex,age,race,lymph node ratio,tumor size,chemotherapy,surgical modality,T stage,tumor differentiation,brain metastasis,lung metastasis,and extension)and 6(age;surveillance,epidemiology,and end results stage;lymph node ratio;chemotherapy;surgical modality;and tumor differentiation)independent risk factors,respectively,were incorporated into the *** area under the curve values at 1,3,and 5 years,respectively,were 0.807,0.842,and 0.826 for overall survival and 0.816,0.835,and 0.841 for cancer-specific *** internal and external validation cohorts indicated good consistency of the *** The dynamic nomogram offers robust predictive efficacy for the overall and cancer-specific survival of ampullary adenocarcinoma.

关键词： Ampullary adenocarcinoma Dynamic nomogram Gastrointestinal tract Surveillance Epidemiology End results database Survival rate

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《菊与刀》的历史价值及局限:区域国别研究的视角

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黄冈师范学院学报 2025年第1期45卷 96-102页

作者：陈静澳门科技大学社会和文化研究所澳门999078

美国人类学家鲁思·本尼迪克特撰写的《菊与刀》,为日本研究在美国的兴起奠定了必不可少的基础,丰富了战后美国区域国别研究的科学方法。从区域国别研究的视角重读这本经典著作,可以发现该书的可取之处在于综合文化人类学、社会学、心... 详细信息

美国人类学家鲁思·本尼迪克特撰写的《菊与刀》,为日本研究在美国的兴起奠定了必不可少的基础,丰富了战后美国区域国别研究的科学方法。从区域国别研究的视角重读这本经典著作,可以发现该书的可取之处在于综合文化人类学、社会学、心理学等多学科与跨学科研究方法的基础上,充分挖掘了多种研究素材和比较了不同研究对象的异同,从而形成对日本国民性的全局性认识。但研究者也应警惕该书所固有的意识形态偏见、服务美国霸权的狭隘目的,以及对日本社会“多元性”的忽视等局限。在我国区域国别研究快速发展的当下,应重视批判借鉴《菊与刀》等传统区域国别研究文献的历史价值,以期探索并运用新的分析方法与研究资料,为推动中国特色的区域国别学科建设作出新的贡献。

关键词：《菊与刀》区域国别研究价值局限

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Optimizing progress variable definition in flamelet-based dimension reduction in combustion

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Applied Mathematics and Mechanics(English Edition) 2015年第11期36卷 1481-1498页

作者： jing chen Minghou LIU Yiliang chen Department of Thermal Science and Energy Engineering University of Science and Technology of China

An automated method to optimize the definition of the progress variables in the flamelet-based dimension reduction is proposed. The performance of these optimized progress variables in coupling the flamelets and flow solver is presented. In the proposed method, the progress variables are defined according to the first two principal components （PCs） from the principal component analysis （PCA） or kernel-density-weighted PCA （KEDPCA） of a set of flamelets. These flamelets can then be mapped to these new progress variables instead of the mixture fraction/conventional progress variables. Thus, a new chemistry look-up table is constructed. A priori validation of these optimized progress variables and the new chemistry table is implemented in a CH4/N2/air lift-off flame. The reconstruction of the lift-off flame shows that the optimized progress variables perform better than the conventional ones, especially in the high temperature area. The coefficient determinations （R2 statistics） show that the KEDPCA performs slightly better than the PCA except for some minor species. The main advantage of the KEDPCA is that it is less sensitive to the database. Meanwhile, the criteria for the optimization are proposed and discussed. The constraint that the progress variables should monotonically evolve from fresh gas to burnt gas is analyzed in detail.

关键词： principal component analysis (PCA),oprogress variable flamelet-basedmodel dimension reduction

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[Y(IO3)3(H2O)2]n: a New Rare Earth Iodate Featuring the Circle-shaped I4O12 Polyiodate Anion and Three-order Nonlinear Optical Property

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Chinese Journal of Structural Chemistry 2020年第7期39卷 1307-1313页

作者： chen jing-jing ZHENG Yu-Ying College of Material Science and Engineering Fuzhou UniversityFuzhou 350108China

A new layered yttrium iodate[Y(IO3)3(H2O)2]n(1)has been prepared from the hydrothermal reaction of Y(NO3)3?6H2O with I2O5 at 170℃,and its structure was determined by X-ray single-crystal diffraction *** belongs to the triclinic system,space group P1 with a=7.355(5),b=7.515(5),c=9.413(7)?,α=79.65(2)o,β=85.18(3)o,γ=71.870(19)o,Z=2,V=486.2(6)?3.1 was further characterized by FTIR,powder X-ray diffraction(PXRD)and UV-Vis *** 1,the Y centers in a monocapped trigonal prism environment are bound by IO-3 anion and unique circle-shaped I4O12 polyiodate anion to generate a wave-like 2-D *** adjacent layers are further linked with each other by hydrogen bonds to form a quasi-3-D supramolecular network.1 exhibits a reverse saturation absorption and a self-defocusing effect with the nonlinear absorption coefficientβbeing–0.66×10-5 mW-1,which stems mainly from the electron transition from O-2p to I-5p orbital within iodates upon theoretical calculation.

关键词： rare earth iodate hydrothermal synthesis three-order nonlinear optical theoretical calculation

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Quasi-3-D Gadolinium Iodate Constructed from Infinite Polyiodate: Structure, Green-emission and UV Light-driven Degradation on Organic Dye

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Chinese Journal of Structural Chemistry 2020年第7期39卷 1323-1330页

作者： chen jing-jing ZHENG Yu-Ying College of Material Science and Engineering Fuzhou UniversityFuzhou 350108China

A new gadolinium iodate has been synthesized via hydrothermal method,and its structure was determined as[Gd(H2O)(IO3)2(IO3H2O)]n(1)by X-ray single-crystal *** 2-D layer is built from the linkage of Gd2O16I4 dimer viaμ2/μ3-bridged iodates,and the quasi-3-D network is generated via weak I···O bonds and hydrogen ***,powder X-ray diffraction(PXRD)and UV-Vis spectra were conducted to characterize the as-synthesized ***,1 exhibits green emission,which might be assigned to electronic transfer within iodate *** UV adsorption of 1 hints its UV light-driven photocatalytic property,and as expected,it exhibits photocatalytic activity for the degradation of rhodamine *** calculation was conducted to give structure/property correlation.

关键词： rare earth iodate hydrothermal synthesis luminescence DFT calculation

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The Willmore functional of surfaces

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Applied Mathematics(A Journal of Chinese Universities) 2013年第4期28卷 485-493页

作者： chen jing-yi Department of Mathematics University of British ColumbiaVancouver B.C. V6T1Z2 Canada

The Whitney immersion theorem asserts that every smooth n-dimensional manifold can be immersed in R2n-1, in particular, smooth surfaces can be immersed in R3, and for embeddings the ambient dimension needs to go up by 1. Immersions or embeddings carry both intrinsic and extrinsic information of manifolds, and the latter determines how the manifold fits into the Euclidean space. The key geometric quantity to capture the extrinsic geometry is the second fundamental form.

关键词： Willmore functional Berstein type theorem W2,2 conformal immersions and compactness

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The Commuting Graphs on Dicyclic Groups

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Algebra Colloquium 2020年第4期27卷 799-806页

作者： jing chen Lang Tang School of Mathematics and Computational Science Hunan First Normal University Changsha 410073China

For a group G and a non-empty subsetΩof G,the commuting graph C(G,Ω)ofΩis a graph whose vertex set isΩand any two vertices are adjacent if and only if they commute in *** T4n=(a,b|a^(2)n=b^(4)=1,an=b2,b^(−1)ab=a^(−1)),the dicyclic group of order 4n(n≥3),which is also known as the generalized quaternion *** mainly investigate the properties and metric dimension of the commuting graphs on the dicyclic group T4n.

关键词： commuting graph dicyclic group perfect matching metric dimension

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Synthesis of Star Polymeric Ionic Liquids and Use as the Stabilizers for High Internal Phase Emulsions

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Chinese Journal of Polymer Science 2017年第1期35卷 54-65页

作者： qi-jing chen 安泽胜 Institute of Nanochemistry and Nanobiology College of Environmental and Chemical Engineering Shanghai University Shanghai 200444 China

A series of well-defined core cross-linked star （CCS） polymeric ionic liquids （PILs） were synthesized via a three- step approach. First, the styrenic imidazole-based CCS polymer （S-PVBnIm） was prepared by the RAFT-mediated heterogeneous polymerization in a water/ethanol solution, followed by the quaternization of S-PVBnIm with bromoalkanes and anion exchange. The CCS polymers were characterized by gel permeation chromatography （GPC）, nuclear magnetic resonance （NMR） spectroscopy, Fourier transform infrared spectroscopy （FTIR）, thermal gravimetric analysis （TGA）, and differential scanning calorimetry （DSC）. The obtained CCS polymers were used as the effective emulsifiers for oil-in-water high internal phase emulsions （HIPEs）. Multiple oils with different polarity including n-dodecane, undecanol, toluene and octanol were emulsified using 0.5 wt% S-PVBnIm aqueous solution under the acidic condition to form HIPEs with long-term stabilities. The excellent emulsification properties of CCS PILs were demonstrated by HIPE formation for a variety of oils. The properties of HIPEs in terms of emulsion type and oil droplet size were characterized by the confocal laser scanning microscopy （CLSM）. The intriguing capability of CCS PILs to stabilize HIPEs of various oils holds great potentials for the practical applications.

关键词： Star polymers Poly(ionic liquids) Emulsions

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On the Prescribed Boundary Mean Curvature Problem via Local Pohozaev Identities

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Acta Mathematica Sinica,English Series 2023年第10期39卷 1951-1979页

作者： Qiu Xiang BIAN jing chen jing YANG School of Science Jiangsu University of Science and TechnologyZhenjiang 212003P.R.China School of Mathematics and Statistics and Hubei Key Laboratory Mathematical Sciences Central China Normal UniversityWuhan 430079P.R.China

This paper deals with the following prescribed boundary mean curvature problem in B^(N){−Δu=0,u>0,∂_(u)∂_(ν)+N−2/2 u=N−2/2 K˜(y)u^(2−1),y∈B^(N)y∈S^(N−1),where K˜(y)=K˜(|y|,y˜)is a bounded nonnegative function with y=(y,y˜)∈R^(2)×R^(N−3),2=2(N−1)/N−*** the finite-dimensional reduction method and local Pohozaev type of identities,we prove that if N≥5 and K˜(r,y˜)has a stable critical point(r_(0),y˜_(0))with r0>0 and K˜(r0,y˜0)>0,then the above problem has infinitely many solutions,whose energy can be made arbitrarily *** our result fill the gap that the above critical points may include the saddle points of K˜(r,y˜).

关键词： Infinitely many solutions prescribed boundary mean curvature finite reduction local Pohozaev identities

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Phase diagram calculation and predication of Au–Pd–Zr ternary system

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Rare Metals 2017年第2期36卷 142-146页

作者： Jie Yu Lin-jing Liu Shou-Dong chen jing-Chao chen Faculty of Material Science and Engineering Kunming University of Science and Technology Mechanical Engineering and Automation Department Hunan Biological and Electromechanical Polytechnic

Au-Pd-Zr ternary alloy phase diagram at 25℃ was calculated by Panda phase calculation software,and the thermodynamic data were based on three binary alloy phase diagrams：Pd-Au,Au-Zr,and *** composition points in the ternary phase diagram were selected to predict the precipitation ***（32Au-32Pd-36Zr） of the five composition points in ternary phase diagram was chosen to verify the correctness of the phase diagram calculation and the precipitation order by scanning electron microscopy（SEM）,energy dispersive spectroscopy（EDS）,and X-ray diffraction（XRD）.The unknown phase in XRD patterns was predicated by EDS and materials studio（MS） *** experimental results show that there are seven key ternary reactions points and 17 phase regions in all isothermal sections at 25℃.The thermodynamic process and microstructure for the alloy phase can be described in order according to the vertical section in phase *** phase compositions of the chosen one point are consistent with calculation *** unknown phase in XRD patterns should be Zr_2AuPd by the first principle X-ray simulation.

关键词： Calculated phase diagram Ternary alloy Thermodynamic Phase transformation Annealing

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