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Prevalence of Helicobacter pylori infection in Chinese military personnel:A cross-sectional,multicenter-based study

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World Journal of Gastroenterology 2025年第3期31卷 42-49页

作者： Han-Chen Min chun-Yan zhang Fang-Yu Wang Xiao-Hui Yu Shan-Hong Tang Hong-Wu Zhu Ya-Gang Zhao Ji-Luo Liu Jian Wang Jing-Han Guo Xiao-Mei zhang Yun-Sheng Yang Chinese People’s Liberation Army Medical School Chinese People’s Liberation Army General HospitalBeijing 100853China Department of Gastroenterology and Hepatology The First Medical CenterChinese People’s Liberation Army General HospitalBeijing 100853China Sixth Healthcare Department The Second Medical CenterChinese People’s Liberation Army General HospitalBeijing 100853China Department of Gastroenterology The 940th Hospital of Joint Logistic Support Force of Chinese People’s Liberation ArmyLanzhou 730050Gansu ProvinceChina Department of Gastroenterology General Hospital of Western Theater CommandChengdu 610011Sichuan ProvinceChina Department of Gastroenterology General Hospital of Southern Theater CommandGuangzhou 510010Guangdong ProvinceChina Department of Epidemiology Naval Medical UniversityShanghai 200433China School of Medicine Nankai UniversityTianjin 300071China National Clinical Research Center for Geriatric Diseases Chinese People’s Liberation Army General HospitalBeijing 100853China

BACKGROUND Helicobacter pylori(***)infection is a prevalent disease encountered in military internal medicine and recognized as the main cause of dyspepsia,gastritis,and peptic ulcer,which are common diseases in military *** guidelines in China state all patients with evidence of active infection with *** are offered ***,the prevalence of *** infection and its regional distribution in the military population remain unclear,which hinders effective prevention and treatment *** the prevalence of *** infection in the military population will aid in the development of customized strategies to better manage this infectious *** To investigate the prevalence of *** infection in the Chinese military population in different geographic *** This multicenter,retrospective study included 22421 individuals from five tertiary hospitals located in north,east,southwest,and northwest cities of *** infection was identified using the urea breath test,which had been performed between January 2020 and December *** Of the 22421 military service members,7416(33.1%)were urea breath *** highest prevalence of *** was in the 30-39 years age group for military personnel,with an infection rate of 34.9%.The majority of infected subjects were younger than 40-years-old,accounting for 70.4%of the infected *** individuals serviced in Lanzhou and Chengdu showed a higher infection prevalence than those in Beijing,Nanjing,and Guangzhou,with prevalence rates of 44.3%,37.9%,29.0%,31.1%,and 32.3%,*** *** infection remains a common infectious disease among military personnel in China and has a relatively high prevalence rate in northwest China.

关键词： Helicobacter pylori Prevalence Military personnel Urea breath test Multicenter study

Two Weighted Estimates for the Commutators of Multilinear Maximal Singular Integral Operators with Dini-type Kernels

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Acta Mathematica Sinica,English Series 2023年第3期39卷 459-480页

作者： chun Mei zhang School of Mathematical Sciences Beijing Normal UniversityBeijing 100875P.R.China

The main purpose of this paper is to investigate the properties of the higher order commutators of maximal Calderón-Zygmund operators with Dini-type *** weighted estimates have been established for these *** results ... 详细信息

关键词： Commutators sparse domination multlinear maximal singular integral operators Dinitype kenels two weighted boundedness

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A target group tracking algorithm based on a hybrid sensor network

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Chinese Physics B 2018年第8期27卷 77-86页

作者： chun zhang School of Computer Science Nanfing University of Posts and TelecommunicationsNanjing 210023China

Traditional tracking algorithms based on static sensors have several problems. First, the targets only occur in a part of the interested area; however, a large number of static sensors are distributed in the area to guarantee entire coverage, which leads to wastage of sensor resources. Second, many static sensors have to remain in active mode to track the targets, which causes an increase of energy consumption. To solve these problems, a target group tracking algorithm based on a hybrid sensor network is proposed in this paper, which includes static sensors and mobile sensors. First, an estimation algorithm is proposed to estimate the objective region by static sensors, which work in low-power sensing mode. Second, a movement algorithm based on sliding windows is proposed for mobile sensors to obtain the destinations. Simulation results show that this algorithm can reduce the number of mobile sensors participating in the tracking task and prolong the network lifetime.

关键词： hybrid sensor network target group tracking mobile sensors

Deformation and water/gas flow properties of claystone/bentonite mixtures

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Journal of Rock Mechanics and Geotechnical Engineering 2021年第4期13卷 864-874页

作者： chun-Liang zhang Gesellschaft fur Anlagen-und Reaktorsicherheit(GRS) Braunschweig38122Germany

As a potential engineered barrier material for disposal of radioactive waste in clay formations,claystone aggregate excavated from the Opalinus clay(OPA),its mixture with bentonite MX80 in a mass ratio of 7/3,and pure bentonite were extensively investigated with respect to the hydro-mechanical properties and *** these materials,a series of parallel experiments was performed under sequentially applied conditions of hydration with synthetic porewater of the clay formation,consolidation and water flow under increased stresses,and gas injection into the water-saturated and compacted materials under *** responses of the clay mixtures were *** findings include:(1)the hydration and induced swelling of the mixtures are mainly dominated by bentonite content and dry density;(2)the consolidation decreases the porosity and water permeability exponentially by 2-3 orders of magnitude to low values of 10^(-18)-10^(-20) m^(2) at stresses of 2-5 MPa,depending upon bentonite content;and(3)the gas penetration in the water-saturated and compacted bentonite is characterised by a cyclic pressure rising/dropping process limited in between the upper breakthrough and lower shut-off boundaries,whereas the compacted claystone and claystone/bentonite mixture allow for gas release at low and moderate *** results are helpful for design of the engineered barriers for safe isolation of radioactive waste in repositories.

关键词： Crushed claystone Claystone/bentonite mixture Hydration Swelling Consolidation Water permeability Gas penetration

Finiteness Conditions and Relative Singularity Categories

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Acta Mathematica Sinica,English Series 2022年第8期38卷 1436-1446页

作者： chun Xia zhang School of Mathematical Sciences Chongqing Normal UniversityChongqing 401331P.R.China

We introduce the n-pure projective(resp.,injective)dimension of complexes in n-pure derived categories,and give some criteria for computing these dimensions in terms of the n-pure projective(resp.,injective)resolutions(resp.,coresolutions)and n-pure derived *** a consequence,we get some equivalent characterizations for the finiteness of n-pure global dimension of ***,we study Verdier quotient of bounded n-pure derived category modulo the bounded homotopy category of n-pure projective modules,which is called an n-pure singularity category since it can reflect the finiteness of n-pure global dimension of rings.

关键词： n-pure projective dimension n-pure injective dimension n-pure global dimension n-pure derived category n-pure singularity category

Superconductivity in CuO_2 monolayer on cuprate substrates

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Science Bulletin 2016年第16期61卷 1236-1238页

作者： Fu-chun zhang Department of Physics Zhejiang University Hangzhou 310027 China

High transition temperatureeTcTsuperconductivity in cuprates remains to be one of the most challenging topics in condensed matter physics[1–5].Despite worldwide efforts in the past 30 years since its

关键词：高温超导 CuO2 铜基导电平面凝聚态物理转变温度层状结构铜氧化物

Thermo-hydro-mechanical behavior of clay rock for deep geological disposal of high-level radioactive waste

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Journal of Rock Mechanics and Geotechnical Engineering 2018年第5期10卷 992-1008页

作者： chun-Liang zhang Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) Repository Safety Research Division Theodor-Heuss-Str 4 Braunschweig 38122 Germany

In the context of deep geological disposal of radioactive waste in clay formations, the thermo-hydro- mechanical （THM） behavior of the indurated Callovo-Oxfordian and Opalinus clay rocks has been extensively investigated in our laboratory under repository relevant conditions：（1） rock stress covering the range from the lithostatic state to redistributed levels after excavation; （2） variation of the humidity in the openings due to ventilation as well as hydraulic drained and undrained boundary conditions; （3） gas generation from corrosion of metallic components within repositories; and （4） thermal loading from high-level radioactive waste up to the designed maximum temperature of 90 ~C and even beyond to 150 ~C, Various important aspects concerning the long-term barrier functions of the clay host rocks have been studied：（1） fundamental concept for effective stress in the porous clay-water system; （2） stress- driven deformation and damage as well as resulting permeability changes; （3） moisture influences on mechanical properties; （4） self-sealing of fractures under mechanical load and swelling]slaking of clay minerals upon water uptake; （5） gas migration in fractured and resealed claystones; and （6） thermal impact on the hydro-mechanical behavior and properties, Major findings from the investigations are summarized in this paper,

关键词： Repository Clay rock Deformability Swelling Self-sealing Water permeability Gas migration Thermal impact

Examination of effective stress in clay rock

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Journal of Rock Mechanics and Geotechnical Engineering 2017年第3期9卷 97-107页

作者： chun-Liang zhang Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) Braunschweig 38122 Germany

This paper examines the effective stress in indurated clay rock theoretically and experimentally.A stress concept is derived from the analysis of the microstructure and of the pore water in the highly-indurated Callovo-Oxfordian and Opalinus clay rocks,and subsequently validated by various experiments performed on these *** concept suggests that the interparticle or effective stress in a dense clay ewater system is transferred through both the adsorbed interparticle pore water in narrow pores and the solidesolid contact between non-clay mineral *** experiments show that the adsorbed pore water in the claystones is capable of bearing deviatoric effective stresses up to the failure *** applied stresses are for the most part or even totally transferred by the bound pore water,*** swelling pressure in the interparticle bound pore water is almost equivalent to the effective *** stress concept provides a reasonable view to the nature of the effective stress in argillaceous rock and forms the fundamental basis for studies of the hydro-mechanical properties and processes in clay formations.

关键词： Clay rock Stress analysis Effective stress Swelling pressure Experiment

The role of innate immunity in diabetic nephropathy and their therapeutic consequences

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Journal of Pharmaceutical Analysis 2024年第1期14卷 39-51页

作者： Min Yang chun zhang Department of Nephrology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China

Diabetic nephropathy (DN) is an enduring condition that leads to inflammation and affects a substantial number of individuals with diabetes worldwide. A gradual reduction in glomerular filtration and emergence of proteins in the urine are typical aspects of DN, ultimately resulting in renal failure. Mounting evidence suggests that immunological and inflammatory factors are crucial for the development of DN. Therefore, the activation of innate immunity by resident renal and immune cells is critical for initiating and perpetuating inflammation. Toll-like receptors (TLRs) are an important group of receptors that identify patterns and activate immune responses and inflammation. Meanwhile, inflammatory responses in the liver, pancreatic islets, and kidneys involve inflammasomes and chemokines that generate pro-inflammatory cytokines. Moreover, the activation of the complement cascade can be triggered by glycated proteins. This review highlights recent findings elucidating how the innate immune system contributes to tissue fibrosis and organ dysfunction, ultimately leading to renal failure. This review also discusses innovative approaches that can be utilized to modulate the innate immune responses in DN for therapeutic purposes.

关键词： Innate immunity Diabetic nephropathy Inflammation Toll-like receptor Inflammasomes