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minimally invasive surgery for glycogen storage disease combined with inflammatory bowel disease:A case report

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World Journal of Clinical Cases 2021年第17期9卷 4342-4347页

作者： Jian wan Zi-chao Zhang Mu-Qing Yang Xiao-min Sun Lu Yin Chun-Qiu Chen Center for Difficult and Complicated Abdominal Surgery Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai 200072China Department of Gastroenterology Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai 200072China

BACKGROUND Inflammatory bowel disease(IBD)is rare in patients with glycogen storage disease(GSD).In GSD patients,a decrease in the number of neutrophils leads to prolonged intestinal infection,leading to the formation of chronic inflammation and eventually the development of *** invasive surgery for patients with IBD has been proven to reduce inflammatory responses and postoperative risks and ultimately promote rapid *** we discuss minimally invasive surgery and the perioperative management in a patient with GSD and *** SUMMARY A 23-year-old male had GSD Ib associated with IBD-like disease for 10 *** standard treatments,such as mesalazine,prednisone and adalimumab,the patient eventually developed colonic stenosis with incomplete *** adequate assessment,the patient was treated with minimally invasive surgery and discharged in stable *** minimally invasive surgery for patients with IBD and GSD is safe,feasible and effective.

关键词： minimally invasive surgery Glycogen storage disease Inflammatory bowel disease Perioperative Rapid recovery Case report

Probabilistic Modeling and Optimization of Real-Time Protocol for Multifunction Vehicle Bus

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Tsinghua Science and Technology 2016年第5期21卷 561-569页

作者： Lifan Su min Zhou Hai wan ming Gu School of Software Tsinghua University Beijing 100084 China

In this paper, we present the modeling and optimization of a Real-Time Protocol（RTP） used in Train Communication Networks（TCN）. In the proposed RTP, message arbitration is represented by a probabilistic model and the number of arbitration checks is minimized by using the probability of device activity. Our optimized protocol is fully compatible with the original standard and can thus be implemented easily. The experimental results demonstrate that the proposed algorithm can reduce the number of checks by about 50%, thus significantly enhancing bandwidth.

关键词： train communication network probabilistic modelling protocol optimization

FEM Analysis of Spring-backs in Age Forming of Aluminum Alloy Plates

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Chinese Journal of Aeronautics 2007年第6期20卷 564-569页

作者： Huang Lin wan min Chi Cailou Ji Xiusheng Department of Aircraft Manufacturing Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China Technology Research Institute Shenyang Aircraft Corporation Shenyang 100034 China

The age forming technology, characterized by huge spring-backs, has been developed to manufacture large integral wing-skin panel parts, which necessitates devising a method of predicting spring-backs. A 7B04-T7451 aluminum alloy creep test in tension is accomplished at 155 ℃, and the creep curves are obtained. The material constants of the mechanism-based creep constitutive equations are determined through experiments. The age forming process and the spring-backs of 7B04 aluminum alloy plates are analyzed using the commercial finite element software ABAQUS. The effects of plate thickness and forming time on spring-backs are researched. The spring-backs decrease with the increase of plate thickness and forming time. The test results verify the reliability of the finite element method （FEM） analysis.

关键词： aluminum alloy age forming constitutive equation FEM spring-back

A method for static aeroelastic analysis based on the high-order panel method and modal method

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Science China(Technological Sciences) 2011年第3期54卷 741-748页

作者： YANG chao ZHANG BoCheng wan ZhiQiang wanG YaoKun School of Aeronautic Science and Engineering Beijing University of Aeronautics & Astronautics Beijing 100191 China

A method for static aeroelastic analysis based on the high-order panel method and modal method is presented. The static aeroelastic characteristics of flexible wings are investigated using this method. Three-dimensional aerodynamic models of flexible wings are constructed based on the geometry of wing configuration, and the modal method is adopted to achieve the fluid-structure coupling. The static aeroelastic characteristics of the AGARD445.6 wing and a low-aspect-ratio wing are investigated in this study. The influences of elastic structural deformation on aerodynamic forces are studied with an emphasis analyzing the aerodynamic coefficients, wing root loads, structural deformation and pressure distribution of different sections, and results are compared with the results from wind-tunnel tests and the elastic results based on experimental aerodynamic forces. It is concluded that aerodynamic forces can be accurately calculated with the high-order panel method. The method presented in this study is feasible, credible and efficient. Comprehensive static aeroelastic characteristics can be provided by the method for early phases of aircraft design.

关键词： aeroelasticity flight loads high-order panel method modal method experimental aerodynamic forces

Stiffness Distribution and Aeroelastic Performance Optimization of High-Aspect-Ratio Wings

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Transactions of Nanjing University of Aeronautics and Astronautics 2016年第3期33卷 243-251页

作者： wan Zhiqiang Du Ziliang Wu Qiang Yang chao School of Aeronautic Science and Engineering Beihang University Beijing 100191 P. R. China Shanghai Aircraft Design and Research Institute Shanghai 201210 P. R. China

The relationship between stiffness distribution and aeroelastic performance for a beam-frame model and a3-D model is investigated based on aeroelastic optimization of global stiffness design for high-aspect-ratio *** sensitivity information of wing spanwise stiffness distribution with respect to the twist angle at wing tip,the vertical displacement at wing tip,and the flutter speed are obtained using a sensitivity method for both *** the relationship between stiffness distribution and aeroelastic performance is summarized to guide the design *** using the genetic/sensitivity-based hybrid algorithm,an optimal solution satisfying the strength,aeroelastic and manufacturing constraints is *** is found that the summarized guidance is well consistent with the optimal solution,thus providing a valuable design advice with *** study also shows that the aeroelastic-optimization-based global stiffness design procedure can obtain the optimal solution under multiple constraints with high efficiency and precision,thereby having a strong application value in engineering.

关键词： aeroelastic high-aspect-ratio wing stiffness design structural optimization sensitivity analysis

Two-Way-Coupling Method for Rapid Aerothermoelastic Analyses of Hypersonic Wings

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第1期35卷 135-145页

作者： wan Zhiqiang Yi Nan Li Guoshu Yang chao School of Aeronautics Science and Engineering Beihang UniversityBeijing 100191P.R.China Key Laboratory of Aircraft Advanced Design Technology(Behang University) Ministry of Industry and Information TechnologyBeijing 100191P.R.China Beijing Institute of Nearspace Vehicle′s Systems Engineer Beijing 100076P.R.China

Several types of coupling methods for resolving aerothermoelastic problems associated with hypersonic wings are summarized,and the appropriate coupling methods for engineering calculations are ***,the calculation and analysis methods for the subdisciplines in this field are introduced,and the time step issue is discussed.A two-way-coupling rapid static aerothermoelastic method for analyzing hypersonic wings is *** method considers thermal effects and is used to conduct an aerothermoelastic response analysis for a hypersonic *** addition,the aerodynamic force,heat flux,structural deformation and temperature field are *** following three conclusions are ***,the heating effect has a significant impact on the static aeroelastic response of hypersonic wings;therefore,thermal protection shields are ***,the application of thermal protection shields reduces the differences in the calculation results between the one-and two-way-coupling ***,hypersonic wings exhibit large thermal deformation under high-temperature environments,and in certain cases,the thermal deformation is even larger than the deformation caused by aerodynamic force.

关键词： hypersonic aerothermoelastic two-way-coupling aerodynamic heating thermal deformation

Red Clump Stars from LAMOST Ⅱ： the outer disc of the Milky Way

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Research in Astronomy and Astrophysics 2017年第8期17卷 23-30页

作者： Jun-Chen wan chao Liu Li-Cai Deng Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of SciencesBeijing 100012 China University of Chinese Academy of Sciences Beijing 100049 China

We present stellar density maps of the Galactic outer disc with red clump stars from LAMOST *** samples are separated into younger(mean age^2.7 Gyr)and older(mean age^4.6 Gyr)populations so that they can trace the variation of structures with ages in the range of Galactocentric radius R from 9 to 13.5 *** show that scale heights for both of the two populations increase with R and display radial gradients of 48±6 and 40±4 pc kpc^(-1)for the older and younger populations,*** is evident that flaring occurs in the thin disc populations with a wide range of ***,the intensity of flaring does not seem to be significantly related to the age of the thin disc *** the other hand,scale lengths of the radial surface density profiles are 4.7±0.5 kpc for the younger population and 3.4±0.2 kpc for the older population,meaning that the younger disc population is more radially extended than the older *** the fraction of the younger population mildly increases from 28% at R^9 to about 35% at R^13 kpc,the older population is prominent with a fraction of no less than 65% in the outer disc.

关键词： Galaxy disc—Galaxy evolution—Galaxy structure

Static aeroelastic analysis of a high-aspect-ratio wing based on wind-tunnel experimental aerodynamic forces

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Science China(Technological Sciences) 2011年第10期54卷 2716-2722页

作者： wan ZhiQiang ZHANG BoCheng YANG chao XU Yan School of Aeronautic Science and Engineering Beijing University of Aeronautics & Astronautics Beijing 100191 China Research and Development Center Chengdu Aircraft and Industrial Group Crop. Ltd. Chengdu 610092 China

The aeroelastic responses of a high-aspect-ratio wing are investigated based on nonlinear experimental aerodynamic forces. The influences of nonlinear experimental aerodynamic forces and dynamic pressures on the wing loads are studied in the longitudinal and lateral maneuver states. The flight loads of the wing fixed at the root are calculated at different angles of attack. The aileron efficiency with respect to the dynamic pressures and aileron deflections are also studied. The results indicate that the flight loads of the wings vary nonlinearly with the angle of attack and dynamic pressure. Due to the high-lift aerofoil, elastic components are a large portion of the wing loads, especially for small angles of attack and high dynamic pressure condi-tions. The aileron efficiency is significantly affected by aileron deflections, dynamic pressures and angles of attack when the nonlinear experimental aerodynamic forces are used for calculation. In states with high dynamic pressures and large aileron deflections, aileron reversal can occur. The aileron deflection and angle of attack have a nonlinear effect on the aileron efficiency. An efficient method for analyzing the flight loads and structural design of high-aspect-ratio wings is derived in this study, and the analysis can provide insight into the distribution of flight loads for high-aspect-ratio wings.

关键词： high-aspect-ratio wing aeroelasticity flight loads aileron efficiency aileron reversal experimental aerodynamic forces

A Computer Software-Epitimulator~ for Simulating Temporal Dynamics of Plant Disease Epidemic Progress

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Agricultural Sciences in China 2010年第2期9卷 242-248页

作者： TAN wan-zhong LI Cheng-wen BI chao-wei SUN Xian-chao Fungal Pathology Laboratory Southwest University Beibei 400716 P.R.China Agricultural Department of Wushan County Chongqing 404700 P.R.China

The objective of the present study was to develop a computer software for simulating the temporal development of plant disease epidemics using Richards, logistic, Gompertz, monomolecular, and exponential functions, respectively, and for predicting disease with a fitted model. The software was programmed using Visual Basic （VB6.0） and packaged with the Wise Installation System. The Fibonacci （＇0.618＇） section strategy was used to find out the most appropriate value for the shape parameter （m） in Richards function simulation through looping procedures. The software program was repeatedly tested, debugged and edited until it was run through favorably and produced ideal outputs. It was named Epitimulator based on the phrase ＇epidemic time simulator＇ and has been registered by the National Copyright Department of China （Reg. no. 2007SR18489）. It can be installed and run on personal computers with all versions of Windows operational systems. Data of disease index and survey time are keyed in or imported from Access files. The output of fitted models and related data of parameters can be pasted into Microsoft Excel worksheet or into Word document for editing as required and the simulated disease progress curves can be stored in separate graphic files. After being finally tested and completed, Epitimulator was applied to simulate the epidemic progress of corn northern leaf blight （Exserohilum turcicum） with recorded data from field surveys of corn crops and the fitted models were output. Comparison of the simulation results showed that the disease progress was always best described by Richards function, which resulted in the most accurate simulation model. Result also showed that forecast of northern leaf blight development was highly accurate by using the computed progress model from Richards function.

关键词： plant disease dynamics Richards function Epitimulator fitted model output epidemic forecast