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iLIVER 2024年第1期3卷 30-37页

作者： Lin Han Huan Xie Xue-Mei Ma Xiao-Long Lu Jun Zhao Qing-sheng Liang zheng-sheng zou Jing-Feng Bi Bo Jin Ying Sun Senior Department of Hepatology The Fifth Medical Center of PLA General HospitalBeijing 100039China Senior Department of Infectious Diseases Medicine The Fifth Medical Center of PLA General HospitalBeijing 100039China Graduate School Medical School of Chinese PLABeijing 100039China

Background and aims:Esophagogastric varices(EGV)are common complications of primary biliary cholangitis(PBC).We examined the risk factors for variceal bleeding-related liver transplantation(LT)or ***:This prospective observational cohort study involved PBC in our hospital from 1 January 2005 to 1 January *** clinical endpoints were variceal bleeding-related LT and *** analysis was performed using the Kaplan-Meier estimate,cox regression analysis was performed to investigate risk ***:PBC with EGV had significantly shorter survival than those without(p?0.002).Endoscopic prophylaxis significantly improved poor outcomes in PBC with EGV(p1.2ULN at baseline,total bilirubin of>1.2ULN,aspartate aminotransferase(AST)of>2.3ULN after 1 year of ursodeoxycholic acid(UDCA)treatment,non-biochemical responders according to the Paris criteria,and no history of endoscopic *** PBC without EGV,risk factors included AST of>2.3ULN,INR of>1.2ULN at baseline,CHE of***:This study provides evidence that AST,INR and CHE are major risk factors for variceal bleedingrelated poor outcomes in *** PBC with EGV,a good biochemical response to UDCA and endoscopic prophylaxis may improve *** findings can aid for guiding initial PBC risk stratification and screening endoscopy in patients without EGV.

关键词： Primary biliary cholangitis Esophagogastric varices Ursodeoxycholic acid Liver transplant-free survival Endoscopic therapy Risk factors

Development and validation of a novel model to predict liver-related mortality in patients with idiosyncratic drug-induced liver injury

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Hepatobiliary & Pancreatic Diseases International 2023年第6期22卷 584-593页

作者： Yan Wang Cai-Lun zou Jing Zhang Li-Xia Qiu Yong-Fa Huang Xin-Yan Zhao zheng-sheng zou Ji-Dong Jia Liver Research Center Beijing Friendship HospitalCapital Medical UniversityKey Laboratory on Translational Medicine on CirrhosisNational Clinical Research Center for Digestive DiseasesBeijing 100050China The Third Unit Department of HepatologyBeijing You’an HospitalCapital Medical UniversityBeijing 100069China Liver Transplantation Center Beijing Friendship HospitalCapital Medical UniversityNational Clinical Research Center for Digestive DiseasesBeijing 100050China Clinical Center for Pediatric Liver Transplantation Capital Medical UniversityBeijing 100050China Senior Department of Hepatology the Fifth Medical Center of Chinese PLA General HospitalBeijing 100039China

Background: Early identification of patients with high mortality risk is critical for optimizing the clinical management of drug-induced liver injury(DILI). We aimed to develop and validate a new prognostic model to predict death within 6 months in DILI patients. Methods: This multicenter study retrospectively reviewed the medical records of DILI patients admitted to three hospitals. A DILI mortality predictive score was developed using multivariate logistic regression and was validated with area under the receiver operating characteristic curve(AUC). A high-mortality-risk subgroup was identified according to the score. Results: Three independent DILI cohorts, including one derivation cohort( n = 741) and two validation cohorts( n = 650, n = 617) were recruited. The DILI mortality predictive(DMP) score was calculated using parameters at disease onset as follows: 1.913 × international normalized ratio + 0.060 × total bilirubin(mg/d L) + 0.439 × aspartate aminotransferase/alanine aminotransferase – 1.579 × albumin(g/d L) –0.006 × platelet count(109/L) + 9.662. The predictive performance for 6-month mortality of DMP score was desirable, with an AUC of 0.941(95% CI: 0.922-0.957), 0.931(0.908-0.949) and 0.960(0.942-0.974) in the derivation, validation cohorts 1 and 2, respectively. DILI patients with a DMP score ≥ 8.5 were stratified into high-risk group, whose mortality rates were 23-, 36-, and 45-fold higher than those of other patients in the three cohorts. Conclusions: The novel model based on common laboratory findings can accurately predict mortality within 6 months in DILI patients, which should serve as an effective guidance for management of DILI in clinical practice.

关键词： Liver injury Prognostic score Risk stratification Mortality

The pathologic relevance of metabolic criteria in patients with biopsy-proven nonalcoholic fatty liver disease and metabolic dysfunction associated fatty liver disease:A multicenter cross-sectional study in China

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Hepatobiliary & Pancreatic Diseases International 2021年第5期20卷 426-432页

作者： Rui-Xu Yang zheng-sheng zou Bi-Hui Zhong Hong Deng Fang-Ping He Jun-Ping Shi Cai-Yan Zhao Yu-Qiang Mi Yong-Jian Zhou Fu-sheng Di Rui-Dan zheng Qin Du Jia Shang Branko Popovic Jin Jun Chen Jian-Gao Fan Center for Fatty Liver Department of GastroenterologyXinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai Key Lab of Pediatric Gastroenterology and NutritionShanghai 200092China Department of Liver Disease Fifth Medical Center of Chinese PLA General HospitalBeijing 100039China Department of Gastroenterology the First Affiliated HospitalSun Yat-Sen UniversityGuangzhou 510080China Department of Infectious Diseases the Third Affiliated HospitalSun Yat-Sen UniversityGuangzhou 510630China Department of Gastroenterology II the First Affiliated Hospital of Xinjiang Medical UniversityXinjiang Uygur Autonomous RegionsUrumqi 830011China The Affiliated Hospital of Hangzhou Normal University Hangzhou 310015China Department of Infectious Disease the Third Hospital of Hebei Medical UniversityShijiazhuang 050051China Department of Infectious Diseases Tianjin Second People's HospitalTianjin 300192China Department of Gastroenterology and Hepatology Guangzhou First People's HospitalSchool of MedicineSouth China University of TechnologyGuangzhou 510180China Department of Endocrinology and Metabolism The Third Central Hospital of TianjinTianjin 300170China Diagnosis and Treatment Center for Liver Diseases Zhengxing HospitalZhangzhou 363000China Department of Gastroenterology the Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Department of Infectious Diseases Henan Provincial People's HospitalZhengzhou 450003China Sanofi-Aventis Deutschland GmbH Frankfurt 65929Germany Hepatology Unit Department of Infectious DiseasesNanfang HospitalSouthern Medical UniversityGuangzhou 510515China

Background:This study aimed to assess the association between metabolic syndrome(Met S)and severity of nonalcoholic fatty liver disease(NAFLD),and to discuss the pathological relevance of the diagnostic criteria in metabolic(dysfunction)associated fatty liver disease(MAFLD).Methods:This was a multicenter,cross-sectional *** with NAFLD confirmed by liver biopsy were enrolled between July 2016 and December 2018 from 14 centers across the mainland of *** and metabolic parameters were collected to assess the pathological ***:Of 246 enrolled patients with NAFLD,150(61.0%)had the comorbidity of Met *** the increase of metabolic components,the proportions of nonalcoholic steatohepatitis(NASH)and significant fibrosis were notably *** comorbid three metabolic components significantly increased the proportion of NASH,and further increase of metabolic components did not increase the proportion of ***,the increase of metabolic components was parallel to the increase of the proportion of liver *** the 246 patients,239(97.2%)met the diagnostic criteria of *** non-MAFLD patients had less NASH,they present with similar proportion of significant fibrosis and *** the diagnostic criteria of MAFLD,BMI≥23 kg/m2 was related to NASH(Mantel-Haenszel Common Estimate OR:2.975;95%CI:1.037–8.538;P=0.043),and T2 DM was related to significant fibrosis(Mantel-Haenszel Common Estimate OR:2.531;95%CI:1.388–4.613;P=0.002).The homeostasis model assessment of insulin resistance(HOMA-IR)≥2.5 was the most significant factor for NASH(OR:4.100;95%CI:1.772–9.487;P=0.001)and significant factor for liver fibrosis(OR:2.947;95%CI:1.398–6.210;P=0.004)after the adjustments of the BMI and ***:Metabolic dysregulations are important risk factors in NAFLD *** insulin resistance status may play a predominant role in the progression in MAFLD patients.

关键词： Nonalcoholic fatty liver disease Metabolic syndrome Insulin resistance

Hydration Behavior and Cementitious Properties of Calcium Carbonate-aluminate Minerals Composite

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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 126-133页

作者：王冲周帅 zou Luyao LIU Jiawen zheng Yalin College of Materials Science and Engineering Chongqing UniversityChongqing 400045China China West Construction Group Co. Ltd.Chengdu 610015China

The purpose of this research is to investigate the hydration behavior and cementitious properties of the mixture of calcium carbonate and aluminate, and to explore whether it can be adopted as a new low-carbon cementitious material. The composite system of calcium carbonate and aluminate minerals is studied by measuring the component of hydration products, the hydration heat, setting time and compressive *** results prove that the composite system has certain cementitious properties and is feasible to prepare new low-carbon cement.

关键词： limestone hydrated calcium carboaluminate cementitious properties mechanical properties

Effect mechanism of seepage force on the hydraulic fracture propagation

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International Journal of Coal Science & Technology 2024年第3期11卷 223-240页

作者： Haiyang Wang Desheng Zhou Yi zou Peng zheng School of Petroleum Engineering Xi’an Shiyou UniversityXi’an710065China Engineering Research Center of Development and Management for Low to Extra-Low Permeability Oil and Gas Reservoirs in West China Ministry of EducationXi’an Shiyou UniversityXi’an710065ShaanxiChina Xi’an University of Science and Technology Xi’an710054ShaanxiChina

The flow of fluid through the porous matrix of a reservoir rock applies a seepage force to the solid rock *** the seepage force exerted by fluid flow through the porous matrix of a reservoir rock has a notable influence on rock deformation and failure,its effect on hydraulic fracture(HF)propagation remains ***,in this study,we improved a traditional fluid–solid coupling method by incorporating the role of seepage force during the fracturing fluid seepage,using the discrete element ***,we validated the simulation results of the improved method by comparing them with an analytical solution of the seepage force and published experimental ***,we conducted numerical simulations in both homogeneous and heterogeneous sandstone formations to investigate the influence of seepage force on HF *** results indicate that fluid viscosity has a greater impact on the magnitude and extent of seepage force compared to injection rate,and that lower viscosity and injection rate correspond to shorter hydraulic fracture ***,seepage force influences the direction of HF propagation,causing HFs to deflect towards the side of the reservoir with weaker cementation and higher permeability.

关键词： Hydraulic fracturing Seepage force Fracture propagation Discrete element method Reservoir heterogeneity

Metabolic Disorders Combined with Noninvasive Tests to Screen Advanced Fibrosis in Nonalcoholic Fatty Liver Disease

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Journal of Clinical and Translational Hepatology 2021年第5期9卷 607-614页

作者： Yi-Wen Shi Fang-Ping He Jin-Jun Chen Hong Deng Jun-Ping Shi Cai-Yan Zhao Yu-Qiang Mi zheng-sheng zou Yong-Jian Zhou Fu-sheng Di Rui-Dan zheng Qin Du Jia Shang Rui-Xu Yang Branko Popovic Bi-Hui Zhong Jian-Gao Fan Center for Fatty Liver Department of GastroenterologyXinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai Key Lab of Pediatric Gastroenterology and NutritionShanghaiChina Department of Gastroenterology II The First Affiliated Hospital of Xinjiang Medical UniversityXinjiang Uygur Autonomous RegionsÜrümqiChina Hepatology Unit Department of Infectious DiseasesNanfang HospitalSouthern Medical UniversityGuangzhouChina Department of Infectious Diseases the Third Affiliated HospitalSun Yat-Sen UniversityGuangzhouChina The Affiliated Hospital of Hangzhou Normal University HangzhouChina Department of Infectious Disease The Third Hospital of Hebei Medical UniversityShijiazhuangChina Department of Infectious Diseases Tianjin Second People’s HospitalTianjinChina Department of Liver Disease Chinese PLA General Hospitalthe Fifth Medical Center of Chinese PLA General HospitalBeijingChina Department of Gastroenterology and Hepatology Guangzhou First People’s HospitalSchool of MedicineSouth China University of TechnologyGuangzhouChina Department of Endocrinology and Metabolism The Third Central Hospital of TianjinTianjinChina Diagnosis and Treatment Center for Liver Diseases Zhengxing HospitalZhangzhouChina Department of Gastroenterology the Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina Department of Infectious Diseases Henan Provincial Peoples’Hospital Zhengzhou ZhengzhouChina Sanofi-Aventis Deutschland GmbH FrankfurtGermany Department of Gastroenterology The First Affiliated HospitalSun Yat-Sen UniversityGuangzhouChina

Background and Aims:Nonalcoholic fatty liver disease(NAFLD)is associated with metabolic *** study aimed to explore the role of metabolic disorders in screening advanced fibrosis in NAFLD ***:A total of 246 histologically-proven NAFLD patients were enrolled across 14 *** compared the severity of fibrosis in patients with different components of metabolic *** on standard noninvasive tests and metabolic disorders,we developed new algorithms to identify advanced ***:Metabolic syndrome(MetS)was frequent in NAFLD patients(133/246,54%).Patients with MetS had a higher proportion of significant fibrosis(p=0.014)and higher LSM values(9.2 kPa,vs.7.4 kPa,p=0.002)than those without *** with more metabolic disorders had higher fibrosis stages(p=0.017).Reduced highdensity lipoprotein cholesterol(odds ratio[OR]:2.241,95%confidence interval[CI]:1.004–5.002,p=0.049)and raised fasting glucose(OR:4.500,95%CI:2.083–9.725,p<0.001)were significantly associated with advanced *** these two metabolic disorders as a screening tool,a sensitivity,specificity and accuracy of 92%,81%and 83%was achieved,*** the new algorithms combining metabolic disorders with noninvasive measurements,the number of patients requiring liver biopsy was reduced,especially in combination with the Fibrosis-4 score and metabolic disorders(36%to 17%,p<0.001).In addition,this stepwise algorithm could achieve a high accuracy(85%)and high negative predictive value(93%).Conclusions:Metabolic disorders should be taken into consideration in the diagnosis of advanced *** further validation and investigation,new algorithms could be recommended in primary care units to spare patients from unnecessary referral and liver biopsies.

关键词： Nonalcoholic fatty liver disease Liver fibrosis Metabolic syndrome Noninvasive measurement

MEMS reservoir computing system with stiffness modulation for multi-scene data processing at the edge

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Microsystems & Nanoengineering 2024年第3期10卷 421-432页

作者： Xiaowei Guo Wuhao Yang Xingyin Xiong zheng Wang Xudong zou The State Key Laboratory of Transducer Technology Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijingChina QILU Aerospace Information Research Institute JinanChina

Reservoir computing(RC)is a bio-inspired neural network structure which can be implemented in hardware with *** has been applied across various fields such as memristors,and electrochemical reactions,among which the microelectro-mechanical systems(MEMS)is supposed to be the closest to sensing and computing *** previous MEMS RCs have demonstrated their potential as reservoirs,the amplitude modulation mode was found to be inadequate for computing directly upon *** achieve this objective,this paper introduces a novel MEMS reservoir computing system based on stiffness modulation,where natural signals directly influence the system stiffness as *** this innovative concept,information can be processed locally without the need for advanced data collection and *** present an integrated RC system characterized by small volume and low power consumption,eliminating complicated setups in traditional MEMS RC for data discretization and *** simulation and experiment were conducted on our *** performed nonlinearity tuning for the resonator and optimized the post-processing algorithm by introducing a digital mask ***,our MEMS RC is capable of both classification and forecasting,surpassing the capabilities of our previous non-delay-based *** method successfully processed word classification,with a 99.8%accuracy,and chaos forecasting,with a 0.0305 normalized mean square error(NMSE),demonstrating its adaptability for multi-scene data *** work is essential as it presents a novel MEMS RC with stiffness modulation,offering a simplified,efficient approach to integrate sensing and *** approach has initiated edge computing,enabling emergent applications in MEMS for local computations.

关键词： computing hardware stiffness

New formula for predicting the plastic buckling pressure of steel torispherical heads under internal pressure

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2024年第8期25卷 618-630页

作者： sheng YE Keming LI Jinyang zheng Shan SUN Institute of Process Equipment Zhejiang UniversityHangzhou 310027China Engineering Research Center for High Pressure Process Equipment and Safety of Ministry of Education Hangzhou 310027China State Key Laboratory of Fluid Power and Mechatronic Systems Hangzhou 310058China

Thin-walled torispherical heads under internal pressure can fail by plastic buckling because of compressive circumferential stresses in the head ***,existing formulas still have limitations,such as complicated expressions and low accuracy,in determining buckling *** this paper,we propose a new formula for calculating the buckling pressure of torispherical heads based on elastic-plastic analysis and experimental ***,a finite element(FE)method based on the arc-length method is established to calculate the plastic buckling pressure of torispherical heads,considering the effects of material strain hardening and geometrical *** buckling pressure results calculated by the FE method in this paper have good consistency with those of BOSOR5,which is a program for calculating the elastic-plastic bifurcation buckling pressure based on the finite difference energy ***,the effects of geometric parameters,material parameters,and restraint form of head edge on buckling pressure are ***,a new formula for calculating plastic buckling pressure is developed by fitting the curve of FE results and introducing a reduction factor determined from experimental ***,based on the experimental results,we compare the predictions of the new formula with those of existing *** is shown that the new formula has a higher accuracy than the existing ones.

关键词： Torispherical head Plastic buckling Elastic-plastic analysis Prediction formula Finite element method

Simulation of the L-valve in the circulating fluidized bed with a coarse-grained discrete particle method

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Particuology 2024年第7期90卷 266-280页

作者： Ruixiang Tang zheng zou Ji Xu Junwu Wang Qingshan Zhu Hongzhong Li State Key Laboratory of Mesoscience and Engineering Institute of Process EngineeringChinese Academy of SciencesP.O.Box 353Beijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing100190China

Stable and controllable solid flow is essential in circulating fluidized bed (CFB) systems. The L-valve is a typical non-mechanical valve that can provide flexible solid feeding. The investigation of the solid circulation rate and the hydrodynamic characteristics of the L-valve is crucial to its design and operation. The gas-solid flow in the L-valve of a full-loop CFB is studied with the coarse-grained discrete particle method (EMMS-DPM). Good agreements on the solid circulation rate and the pressure drop through the L-valve are achieved between the simulated and experimental data. The solid circulation rate increases linearly with the aeration velocity until the stable particle circulation of the CFB is destroyed. The flow patterns in the horizontal section of L-valve are gas-solid slug flow above the stationary solid layer and the moving solid layer, respectively. The effects of L-valve geometric parameters on the solid flow characteristics are also investigated. The results indicate that reducing the diameter and length of the horizontal section of L-valve can improve the solid transport efficiency, especially at low aeration velocity. Besides, the solid conveying capacity and flow stability are improved when the sharp bend of L-valve is modified to be a gradual bend.

关键词： L-valve Circulating fluidized bed Full loop Discrete particle method Gas-solid flow

Experimental,Numerical,and Analytical Studies on the Bending of Mechanically Lined Pipe

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China Ocean Engineering 2024年第2期38卷 221-232页

作者： WEI Wen-bin YUAN Lin ZHOU Jia-sheng LIU zheng State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China School of Civil Engineering Tianjin UniversityTianjin 300072China School of Mechanical Engineering Tianjin UniversityTianjin 300072China

Mechanically lined pipe(MLP)is often used for offshore oil and gas transport because of its low cost and corrosion *** installation and operation,the pipe may undergo severe bending deformation,which causes the liner to separate from the outer pipe and buckles,affecting the stability of the whole *** this paper,the buckling response of MLP subjected to bending is investigated to clarify its bending characteristics by employing both experiments,numerical simulation,as theoretical *** types of MLPs were manufactured with GB 45 carbon steel(SLP)and Al 6061(ALP)used as the outer pipe material,*** hydraulic expansion and bending experiments of small-scale MLPs are *** addition to the ovalized shape of the cross-section for the SLP specimens,the copper liner was found to wrinkle on the compressive *** contrast,the liner of ALP remains intact without developing any wrinkling and collapse *** addition,a dedicated numerical framework and theoretical models were also *** was found both the manufacturing and bending responses of the MLP can be well reproduced,and the predicted maximum moment and critical curvatures are in good agreement with the experimental results.

关键词： lined pipe bending nonlinear ring theory buckling plasticity