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Multiple regression analysis of risk factors related to radiation pneumonitis

World Journal of Clinical Cases 2023年第5期11卷 1040-1048页

作者： Ling-Ling shi Jiang-hua Yang hong-Fa Yao Department of Radiology Huzhou Central HospitalAffiliated Central Hospital of Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina

BACKGROUND Radiation pneumonitis(RP)is a severe complication of thoracic radiotherapy that may lead to dyspnea and lung fibrosis,and negatively affects patients’quality of *** To carry out multiple regression analysis on the influencing factors of radiation *** Records of 234 patients receiving chest radiotherapy in Huzhou Central Hospital(Huzhou,Zhejiang Province,China)from January 2018 to February 2021,and the patients were divided into either a study group or a control group based on the presence of radiation pneumonitis or *** them,93 patients with radiation pneumonitis were included in the study group and 141 without radiation pneumonitis were included in the control *** characteristics,and radiation and imaging examination data of the two groups were collected and *** to the statistical significance observed,multiple regression analysis was performed on age,tumor type,chemotherapy history,forced vital capacity(FVC),forced expiratory volume in the first second(FEV1),carbon monoxide diffusion volume(DLCO),FEV1/FVC ratio,planned target area(PTV),mean lung dose(MLD),total number of radiation fields,percentage of lung tissue in total lung volume(vdose),probability of normal tissue complications(NTCP),and other *** The proportions of patients aged≥60 years and those with the diagnosis of lung cancer and a history of chemotherapy in the study group were higher than those in the control group(P<0.05);FEV1,DLCO,and FEV1/FVC ratio in the study group were lower than those in the control group(P<0.05),while PTV,MLD,total field number,vdose,and NTCP were higher than in the control group(P<0.05).Logistic regression analysis showed that age,lung cancer diagnosis,chemotherapy history,FEV1,FEV1/FVC ratio,PTV,MLD,total number of radiation fields,vdose,and NTCP were risk factors for radiation *** We have identified patient age,type of lung cancer,history of chemotherapy,lung function,and radiotherapy pa

关键词： Radiation pneumonitis Influencing factors Radiotherapy Multiple regression analysis

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Synthesis of the Complex Fluoride LiBaF_(3) through a Solvothermal Process

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Chinese Chemical Letters 2002年第10期13卷 1021-1024页

作者： Rui Nian hua Zhi hong JIA De Min XIE Chun Shan shi Faculty of Chemistry Northeast Normal UniversityChangchun 130024 Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022

The complex fluoride LiBaF3 is solvothermally synthesized at 180degreesC and characterized by means of X-ray powder diffraction, scanning electron microscopy, thermogravimetric analysis and infrared spectroscopy. In the solvothermal process, the solvents, mole ratios of initial mixtures and reaction temperature play important roles in the growth of the single crystal.

关键词： Solvothermal synthesis complex fluoride.

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Investigation on Effects of Vertical Degree of Freedom on Gap Resonance Between Two Side-by-Side Boxes Under Wave Actions

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China Ocean Engineering 2022年第3期36卷 403-412页

作者： HE Zhi-wei GAO Jun-liang shi hua-bin ZANG Jun CHEN hong-zhou LIU Qian School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering University of MacaoMacao 999078China Centre for Infrastructure Geotechnical and Water Engineering(IGWE)Department of Architecture and Civil Engi-neeringUniversity of BathBA27AYUK School of Civil Engineering and Architecture Northeast Electric Power UniversityJilin 132012China

The possible wave resonance in the narrow gap formed by the parallel arrangement of ships will lead to the sharp increase of wave loads and the rapid growth of motion *** fluid resonance inside a narrow gap between two side-by-side boxes is investigated numerically based on an open-source CFD package,*** upstream box remains fixed,while the downstream box is allowed to heave freely under wave *** work aims to examine the influence of the motion of the downstream box on the fluid resonant behaviors inside the *** hydrodynamic behaviors considered include the wave height inside the gap,the heave displacement,and the reflection,transmission,and energy loss *** et al.(2021)reported the influence of the motion of the upstream box on gap resonant *** comparative study,some results of Gao et al.(2021)are also presented in this *** is found that the heave motion of any box in the two-box system leads to a smaller resonant wave height amplification and a larger fluid resonance *** frequency at which the maximum heave displacement of the downstream box occurs is less than the fluid resonant *** heave motion of any box in the two-box system results in a larger reflection coefficient and a smaller energy loss coefficient.

关键词： gap resonance wave height amplification heave motion OpenFOAM

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A novel weld-pool-length monitoring method based on pixel analysis in plasma arc additive manufacturing

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Advances in Manufacturing 2024年第2期12卷 335-348页

作者： Bao-Ri Zhang Yong-hua shi Bionic Robot Research Department Ji Hua LaboratoryFoshan528200GuangdongPeople’s Republic of China Guangdong Provincial Engineering Research Center for Special Welding Technology and Equipment School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou510640People’s Republic of China

The real-time monitoring of the weld pool during deposition is important for automatic control in plasma arc additive *** obtain a high deposition accuracy,it is essential to maintain a stable weld pool *** this study,a novel passive visual method is proposed to measure the weld pool *** the proposed method,the image quality was improved by designing a special visual system that employed an endoscope and a *** also includes pixel brightness-based and gradient-based algorithms that can adaptively detect feature points at the boundary when the weld pool geometry *** algorithm can also be applied to materials with different solidification *** was performed to measure the real weld pool length in world coordinates,and outlier rejection was performed to increase the accuracy of the ***,tests were carried out on the intersection component,and the results showed that the proposed method performed well in tracking the changing weld pool length and was applicable to the real-time monitoring of different types of materials.

关键词： Plasma arc additive manufacturing(PAAM) Weld pool geometry Gradient analysis Real-time detection

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In situ investigation of lysozyme adsorption into polyelectrolyte brushes by quartz crystal microbalance with dissipation

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Chinese Journal of Chemical Engineering 2022年第8期35卷 106-115页

作者： Fenfen You Qing-hong shi Department of Biochemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Key Laboratory of Systems Bioengineering(Ministry of Education) Tianjin UniversityTianjin 300072China

A well understanding about protein adsorption into charged polymer brushes is of importance in the elucidation of mechanism and important phenomena(such as “chain delivery”effect) in protein adsorption on polymer-grafted ion exchange adsorbents. In this work, quartz crystal microbalance with dissipation(QCM-D) was introduced to in situ investigate lysozyme adsorption on QCM sensors grafted with poly(3-sulfopropyl methacrylate)(pSPM) via atom transfer radical polymerization. It was achieved by analyzing frequency(f) and energy dissipation(D) shift simultaneously on pSPM-grafted sensors. The result showed that an initial decrease in ΔD was typical of lysozyme adsorption on pSPM-grafted sensor and more significant with an increase of chain length and grafting density. It was attributed to significant water release in the hydration layer of protein and polymer chains in lysozyme adsorption into pSPM *** pSPM-grafted sensors with long and dense chains, furthermore, lysozyme transitioned from monolayer to multilayer adsorption and the maximum adsorbed amount was obtained to be 374.0 ng·cmamong all pSPM-grafted sensors in this work. The results in D-f plot further revealed that lysozyme adsorption into pSPM brushes increased the rigidity of adsorbed layer and little structure adjustment of adsorbed lysozyme. It was unfavorable for “chain delivery” effect for facilitated transport of adsorbed protein. This work provided valuable insight into protein adsorption in pSPM brushes and outlined a feasible approach to increasing mass transport in polymer-grafted ion exchange adsorbents.

关键词： Adsorption Polymers Protein Water release Graft density Chain length

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Homological Dimensions of the Extension Algebras of Monomial Algebras

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Acta Mathematica Sinica,English Series 2015年第4期31卷 675-694页

作者： hong Bo shi Department of Mathematics Nanjing University of Finance and Economics

The main objective of this paper is to study the dimension trees and further the homological dimensions of the extension algebras -- dual and trivially twisted extensions -- with a unified combinatorial approach using the two combinatorial algorithms -- Topdown and Bottomup. We first present a more complete and clearer picture of a dimension tree, with which we are then able, on the one hand, to sharpen some results obtained before and furthermore reveal a few more hidden subtle homological phenomenons of or connections between the involved algebras; on the other hand, to provide two more efficient combinatorial algorithms for computing dimension trees, and consequently the homological dimensions as an application. We believe that the more refined complete structural information on dimension trees will be useful to study other homological properties of this class of extension algebras.

关键词： Topdown bottomup dimension tree syzygy finitistic dimensions

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Quark Loop Effects on Dressed Gluon Propagator in Framework of Global Color Symmetry Model

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Communications in Theoretical Physics 2006年第4X期46卷 717-722页

作者： ZONG hong-shi Department of Physics Nanjing University Nanjing 210093 China joint Center for Particle Nuclear Physics and Cosmology Nanjing 210093 China CCAST (World Laboratory) P.O. Box 8730 Beijing 100080 China

Based on the global color symmetry mode/ （GCM）, a method for obtaining the quark loop effects on the dressed gluon propagator in GCM is developed. In the chiral limit, it is found that the dressed gluon propagator containing the quark loop effects in the Nambu-Goldstone and Wigner phases are quite different. In solving the quark self-energy functions in the two different phases and subsequent study of bag constant one shouM use the above dressed gluon propagator as input. The above approach for obtaining the current quark mass effects on the dressed gluon propagator is quite general and can also be used to calculate the chemical potential dependence of the dressed gluon propagator.

关键词： quark loop effects GCM explicit and dynamical chiral symmetry breaking

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Permanence and periodic solutions of delayed predator-prey system with impulse

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Applied Mathematics(A Journal of Chinese Universities) 2010年第3期25卷 264-276页

作者： shi hong-bo School of Mathematical Sciences Huaiyin Normal University Jiangsu 223300 China

The existence of positive periodic solution of a generalized semi-ratio-dependent predator-prey system with time delay and impulse is studied by using the continuation theorem based on the coincidence degree theory. T... 详细信息

关键词： Predator-prey system impulse periodic solution permanence coincidence degree.

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Existence Results for Functional Differential Inclusions with Infinite Delay

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Acta Mathematica Sinica,English Series 2006年第3期22卷 773-780页

作者： shi huang hong Department of Applied Mathematics Hangzhou Dianzi University

The aim of the present paper is to investigate the existence of solutions to functional differential inclusions with infinite delay in Banach spaces. A relevant set of phase space axioms is proposed. The main tools us... 详细信息

关键词： functional differential inclusion phase space infinite delay measure of noncompactness

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Graph Representation of Projective Resolutions

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Acta Mathematica Sinica,English Series 2011年第3期27卷 555-566页

作者： hong Bo shi Department of Mathematics Nanjing University of Finance and Economics Nanjing 210046 P. R. China

We generalize the concept -- dimension tree and the related results for monomial algebras to a more general case -- relations algebras A by bringing GrSbner basis into play. More precisely, we will describe the minimal projective resolution of a left A-module M as a rooted ＇weighted＇ diagraph to be called the minimal resolution graph for M. Algorithms for computing such diagraphs and applications as well will be presented.

关键词： Relations algebras dimension trees projective resolutions finitistic dimensions Grobner basis

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