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Endoscopic“calabash”ligation and resection for small gastric mesenchymal tumors

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World Journal of Gastrointestinal Endoscopy 2024年第10期16卷 545-556页

作者： Xi-Min Lin Yue-Ming Peng hao-tian zeng Jia-Xing Yang Zheng-Lei Xu Department of Gastroenterology The Second Clinical Medical CollegeJinan UniversityShenzhen 518000Guangdong ProvinceChina Department of Nursing Shenzhen People’s HospitalThe Second Clinical Medical CollegeJinan UniversityShenzhen 518000Guangdong ProvinceChina Department of Gastroenterology Shenzhen People’s HospitalThe Second Clinical Medical CollegeJinan UniversityShenzhen 518000Guangdong ProvinceChina

BACKGROUND Gastric mesenchymal tumors(GMT)are identified as soft tissue neoplasms that arise from mesenchymal stem cells within the gastrointestinal *** pri-marily encompass gastric stromal tumors(GST),gastric leiomyomas,and gastric *** most GMT are benign,there are still potential malignant changes,especially ***,early surgical intervention is the primary treat-ment for *** have designed a simple endoscopic“calabash”ligation and resection(ECLR)procedure to treat *** efficacy and safety need to be com-pared with those of traditional endoscopic techniques,such as endoscopic sub-mucosal excavation(ESE).AIM To assess the safety and effectiveness of ECLR in managing small GMT(sGMT)with a maximum diameter≤20 mm by comparing to *** This retrospective analysis involved patients who were hospitalized in our institution between November 2021 and March 2023,underwent endoscopic resection,and received a pathological diagnosis of *** with a tumor diameter≤20 mm were chosen and categorized into two cohorts:Study and control *** study group was composed of patients treated with ECLR,whereas the control group was composed of those treated with *** on general clinical characteristics(gender,age,tumor diameter,tumor growth direction,tumor pathological type,and risk grade),surgery-related information(complete tumor resection rate,operation duration,hospitalization duration,hospitalization cost,and surgical complications),and postoperative follow-up were collected for both *** aforementioned data were subsequently analyzed and *** Five hundred and eighty-nine individuals were included,with 297 cases in the control group and 292 in the study *** propensity score matching,the final analysis incorporated 260 subjects in each *** findings indicated that the study group exhibited shorter operation duration and lowered medical expenses relative to the control ***,the study group rep

关键词： Endoscopic“calabash”ligation and resection Endoscopic submucosal excavation Gastric mesenchymal tumors Gastric stromal tumors Leiomyoma Schwannoma

CFD-DEM study of impacts of the porous distributor medium on fluidization characteristics of a 2D-fluidized bed

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Particuology 2024年第4期87卷 54-73页

作者： Fei Wang Yishan zeng hao Yan School of Mechanical Engineering Hefei University of TechnologyHefei230009China

Gas-solid bubbling fluidized beds are widely used in chemical,energy,construction,and other industrial fields due to their excellent fluidization performance.2D-fluidized beds with planar rectangular columns of finite thickness are widely used in fluidized bed studies,and it is essential for understanding the hydrodynamics of gas-particle ***,the distributor(porous medium)at the bottom of the bed has a crucial influence on the fluidization performance of the 2D-fluidized *** this work,the fluidization mechanism and gas-solid dynamic characteristics of the fluidized bed under three porous media are studied by CFD-DEM coupled with the porous medium model,and the accuracy of numerical simulation is verified by a high-speed photography *** show that with the increase in the flow resistance of the porous medium,the average and standard deviation of the bubble diameter decrease,and the time and position of particles in the dead zone to participate in the core-annular flow *** a low fluidization velocity,the dead zone in the bed can be considerably reduced by increasing the flow resistance.

关键词： Fluidized bed CFD-DEM Porous medium Bubble dynamics Solid mixing

Discovery of Partial Differential Equations from Highly Noisy and Sparse Data with Physics-Informed Information Criterion

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Research 2024年第1期2023卷 247-259页

作者： hao Xu Junsheng zeng Dongxiao Zhang BIC-ESAT EREand SKLTCSCollege of EngineeringPeking UniversityBeijing 100871P.R.China Institute of Applied Physics and Computational Mathematics Beijing 100088P.R.China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingbo 315200ZhejiangP.R.China National Center for Applied Mathematics Shenzhen(NCAMS) Southern University of Science and TechnologyShenzhen 518055GuangdongP.R.China Department of Mathematics and Theories Peng Cheng LaboratoryShenzhen 518000GuangdongP.R.China

Data-driven discovery of partial differential equations(PDEs)has recently made tremendous progress,and many canonical PDEs have been discovered successfully for proof of ***,determining the most proper PDE without prior references remains challenging in terms of practical *** this work,a physics-informed information criterion(PIC)is proposed to measure the parsimony and precision of the discovered PDE *** proposed PIC achieves satisfactory robustness to highly noisy and sparse data on 7 canonical PDEs from different physical scenes,which confirms its ability to handle difficult *** PIC is also employed to discover unrevealed macroscale governing equations from microscopic simulation data in an actual physical *** results show that the discovered macroscale PDE is precise and parsimonious and satisfies underlying symmetries,which facilitates understanding and simulation of the physical *** proposition of the PIC enables practical applications of PDE discovery in discovering unrevealed governing equations in broader physical scenes.

关键词： process canonical proof

Structural integration of solar desalination system

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Science China Materials 2024年第6期67卷 2039-2041页

作者： Diling Yang hao Zhang Hongbo zeng School of Materials and Environmental Engineering Hunan University of HumanitiesScience and TechnologyLoudi 417000China Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

As population grow and climate change place significant water stress on numerous regions,the demand for efficient and environmentally friendly water resource solutions becomes increasingly *** address this challenge,desalination technology has received much attention and is widely employed,with a recent emphasis on solar-powered solutions driven by the global push for carbon neutrality.

关键词： neutral system integration

Mass transfer in heap leaching of weathered crust elution deposited rare earth ore with Al_(2)(SO_(4))_(3) solution

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Journal of Rare Earths 2024年第6期42卷 1175-1181,I0007页

作者： Jingqun Yin Dedong zeng Jun tian Yaqing Weng Institute of Applied Chemistry Jiangxi Academy of SciencesNanchang330096China School of Chemistry and Chemical Engineering Nanchang UniversityNanchang330031China

In order to increase efficiency and avoid NH^(4+)-N pollution in the leaching process of weathered crust elution-deposited rare earth ores,the mass transfer in heap leaching with Al_(2)(SO_(4))_(3) solution was simulated with column elution and experimentally *** results indicate that the leaching yield is also up to 99%for leaching with aluminum sulfate instead of ammonium *** optimal flow rate is 60 mL/h,the height equivalent to a theoretical plate(HETP)is 1.29 mm *** peak value position of RE^(3+)is 60 mL/h,Fe^(3+)is 100 mL/h,however,Al^(3+)is 150 mL/h,and the heap leaching process has kinetic separation effect.

关键词： Raree arths Mass transfer Process optimization Heapleaching Weathered crust elution-deposited rare earth ore

Photocontrolled polymer adhesives facilitate the assembly of hydrogels for soft robotics

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Science China Chemistry 2024年第10期67卷 3184-3186页

Both Sun Wukong in eastern mythology and Transformers in western science fiction animation have profoundly inspired the design of deformable materials and modern *** application scope of intelligent materials,also known as smart materials,which are capable of responding to external stimuli to achieve shape changes,structural reorganization,and functional reconfiguration,is wide-ranging,and it covers areas such as soft robotics and flexible electronics[1–3],4D printing[4,5],biomedical equipment[6,7],sensing devices[8],and energy harvesting systems[9].

关键词： printing harvesting smart

Performance Improvement of Two-Phase Steam Ejector based on CFD Techniques,Response Surface Methodology and Genetic Algorithm

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Journal of Thermal Science 2024年第2期33卷 675-695页

作者： ZHANG hao Zhao Hongxia ZHANG Xiuao zeng Hongxuan DENG Jianqiang School of Energy and Power Engineering Shandong UniversityJi’nan250061China School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an710049China

The steam ejector is a crucial component in the waste heat recovery *** performance determines the amount of recovered heat and system ***,poor ejector performance has always been the main bottleneck for system ***,this study proposes an optimization methodology to improve the steam ejector's performance by utilizing computational fluid dynamics(CFD) techniques,response surface methodology(RSM),and genetic algorithm(GA).Firstly,a homogeneous equilibrium model(HEM) was established to simulate the two-phase flow in the steam ***,the orthogonal test was presented to the screening of the key decision variables that have a significant impact on the entrainment ratio(ER).Next,the RSM was used to fit a response surface regression model(RSRM).Meanwhile,the effect of the interaction of geometric parameters on the performance of the steam ejector was ***,GA was employed to solve the RSRM's global optimal ER *** results show that the RSRM exhibits a good fit for ER(R^(2)=0.997).After RSM and GA optimization,the maximum ejector efficiency is 27.94%,which is 48.38% higher than the initial ejector of 18.83%.Furthermore,the optimized ejector efficiency is increased by 46.4% on average under off-design ***,the results reveal that the combination of CFD,RSM,and GA presents excellent reliability and feasibility in the optimization design of a two-phase steam ejector.

关键词： two-phase steam ejector optimization methodology CFD techniques response surface methodology genetic algorithm homogeneous equilibrium model

Successful treatment of severe hepatic impairment in erythropoietic protoporphyria:A case report and review of literature

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World Journal of Hepatology 2024年第6期16卷 966-972页

作者： Tao zeng Shu-Ru Chen hao-Qiang Liu Yu-tian Chong Xin-Hua Li Department of Infectious Diseases Key Laboratory of Liver Disease of Guangdong ProvinceThe Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630Guangdong ProvinceChina Department of Infectious Diseases The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630Guangdong ProvinceChina Department of Blood Transfusion The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630Guangdong ProvinceChina

BACKGROUND Erythropoietic protoporphyria(EPP)is a rare genetic disorder stemming from ferrochelatase gene mutations,which leads to abnormal accumulation of protoporphyrin IX primarily in erythrocytes,skin,bone marrow and *** porphyria-related severe liver damage is rare,its consequences can be severe with limited treatment *** SUMMARY This case study highlights a successful intervention for a 35-year-old male with EPP-related liver impairment,employing a combination of red blood cell(RBC)exchange and therapeutic plasma exchange(TPE).The patient experienced significant symptom relief and a decrease in bilirubin levels following multiple PE sessions and an RBC *** The findings suggest that this combined approach holds promise for managing severe hepatic impairment in EPP.

关键词： Erythropoietic protoporphyria Red blood cell exchange Plasma exchange Delta-aminolevulinic acid Ferrochelatase Case report

Machine Learning-Aided Data Analysis in Single-Protein Conductance Measurement with Electron Tunneling Probes

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Chinese Journal of Chemistry 2024年第1期42卷 67-72页

作者： Yuxin Yang Tao Jiang Ye tian Biaofeng zeng Longhua Tang State Key Laboratoryof Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang University HangzhouZhejiang 310027China Nanhu Brain-computer Interface Institute HangzhouZhejiang 311100China State Key Laboratory of Fluid Power and Mechatronic Systems College of Mechanical EngineeringZhejiang University HangzhouZhejiang 310027China

The electrical tunneling sensors have excellent potential in the next generation of single-molecule measurement and sequencing technologies due to their high sensitivity and spatial resolution *** tunneling signals that have been measured at a high sampling rate may provide detailed molecular *** the extraordinarily large amount of data that has been gathered,it is still difficult to correlate signal transformations with molecular processes,which creates great obstacles for signal *** learning is an effective tool for data analysis that is currently gaining more *** has demonstrated promising results when used to analyze data from single-molecule electrical *** order to extract meaningful information from raw measurement data,we have combined intelligent machine learning with tunneling electrical *** the purpose of analyzing tunneling electrical signals,we investigated the clustering approach,which is a classic algorithm in machine learning.A clustering model was built that combines the advantages of hierarchical clustering and Gaussian mixture model ***,customized statistical algorithms were *** has been proven to efficiently gather molecular information and enhance the effectiveness of data analysis.

关键词： Tunneling sensor Single-molecule measurement Machine learning Single-protein conductance Molecular electrochemistry Nanotechnology Molecular electronics