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Number of Solitons Emerged in the Initial Profile of Shallow Water Using Convolutional Neural Networks

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Journal of Systems Science & Complexity 2024年第2期37卷 463-479页

作者： WANG Zhen cui Shikun School of Mathematical Sciences Dalian University of TechnologyDalian 116024China School of Mathematical Sciences Beihang UniversityBeijing 100191China

The soliton resolution conjecture proposes that the initial value problem can evolve into a dispersion part and a soliton ***,the problem of determining the number of solitons that form in a given initial profile remains unsolved,except for a few specific *** this paper,the authors use the deep learning method to predict the number of solitons in a given initial value of the Korteweg-de Vries(KdV)*** leveraging the analytical relationship between Asech^(2)(x)initial values and the number of solitons,the authors train a Convolutional Neural Network(CNN)that can accurately identify the soliton count from spatio-temporal *** trained neural network is capable of predicting the number of solitons with other given initial values without any additional *** extensive calculations,the authors demonstrate the effectiveness and high performance of the proposed method.

关键词： Convolutional neural network deep learning method KdV equation soliton

Cross-linked Electrospun Gel Polymer Electrolytes for Lithium-Ion Batteries

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Chinese Journal of Polymer Science 2024年第8期42卷 1021-1028页

作者： Xue Gong Qin Xiao Qing-Yin Li Wen-cui Liang Feng Chen Long-yu Li Shi-Jie Ren College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China

Lithium-ion batteries(LIBs)benefit from an effective electrolyte system design in both terms of their safety and energy storage ***,a series of precursor membranes with high porosity were produced using electrospinning technology by mixing PVDF and triblock copolymer(PS-PEO-PS),resulting in a porous structure with good interconnections,which facilitates the absorbency of a large amount of electrolyte and further increases the ionic conductivity of gel polymer electrolytes(GPEs).It has been demonstrated that post-cross-linking of the precursor membranes increa ses the rigidity of the nanofibers,which allows the polymer film to be dimensionally sta ble up to 260℃while maintaining superior electrochemical *** obtained cross-linked GPEs(CGPEs)showed high ionic conductivity up to 4.53×10^(-3)S·cm^(-1).With the CGPE-25,the assembled Li/LiFeP04 half cells exhibited good rate capability and maintained a capacity of 99.4%and a coulombic efficiency of99.3%at 0.1 *** results suggest that the combination of electrospinning technique and post-cross-linking is an effective method to construct polymer electrolytes with high thermal stability and steadily decent electrochemical performance,particularly useful for Lithium-ion battery applications that require high-temperature usage.

关键词： Electrospinning Cross-linked Gel polymer electrolytes Lithium-ion batteries

Pancreatic β-cell failure,clinical implications,and therapeutic strategies in type 2 diabetes

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Chinese Medical Journal 2024年第7期137卷 791-805页

作者： Daxin cui Xingrong Feng Siman Lei hongmei Zhang Wanxin Hu Shanshan Yang Xiaoqian yu Zhiguang Su Molecular Medicine Research Center and Department of Endocrinology and Metabolism West China HospitalSichuan UniversityChengduSichuan 610041China State Key Laboratory of Biotherapy West China HospitalSichuan UniversityChengduSichuan 610041China Clinical Translational Innovation Center West China HospitalSichuan UniversityChengduSichuan 610041China

Pancreaticβ-cell failure due to a reduction in function and mass has been defined as a primary contributor to the progression of type 2 diabetes(T2D).Reserving insulin-producingβ-cells and hence restoring insulin production are gaining attention in translational diabetes research,andβ-cell replenishment has been the main focus for diabetes *** findings inβ-cell proliferation,transdifferentiation,pluripotent stem cell differentiation,and associated small molecules have served as promising strategies to regenerateβ-*** this review,we summarize current knowledge on the mechanisms implicated inβ-cell dynamic processes under physiological and diabetic conditions,in which genetic factors,age-related alterations,metabolic stresses,and compromised identity are critical factors contributing toβ-cell failure in *** article also focuses on recent advances in therapeutic strategies for diabetes treatment by promotingβ-cell proliferation,inducing non-β-cell transdifferentiation,and reprograming stem cell *** a significant challenge remains for each of these strategies,the recognition of the mechanisms responsible forβ-cell development and mature endocrine cell plasticity and remarkable advances in the generation of exogenousβ-cells from stem cells and single-cell studies pave the way for developing potential approaches to cure diabetes.

关键词： Pancreaticβ-cell regeneration Diabetes Insulin Dedifferentiation Transdifferentiation Stem cell

Missing microbes in infants and children in the COVID-19 pandemic:a study of 1,126 participants in Beijing,China

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Science China(Life Sciences) 2024年第8期67卷 1739-1750页

作者： Jiejing Wang yuejuan Li yu Mu Kefei Huang Danyi Li Canhui Lan yutao cui Jun Wang CAS Key Lab for Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Beijing Dr.cuiyuTAO Clinic Beijing 100028China R-Institute Co.Ltd. Beijing 100011China

The COVID-19 pandemic has caused many fatalities worldwide and continues to affect the health of the recovered patients in the form of *** this study,we compared the gut microbiome of uninfected infants and children before the pandemic began(BEFORE cohort,n=906)to that of after the pandemic(AFTER cohort,n=220)to examine the potential impact of social distancing and life habit changes on infant/children gut *** on 16S rRNA sequencing,we found a significant change in microbiome composition after the pandemic,with Bacteroides enterotype increasing to 35.45%from 30.46%before the *** quantification indicated that the bacterial loads of seven keystone taxa decreased by 91.69%–19.58%.Quantitative microbiome profiling,used to enhance the resolution in detecting microbiome differences,revealed a greater explained variance of pandemic on microbiome compared to gender,as well as a significant decrease in bacterial loads in 15 of the 20 major *** random forest age-predictor indicated the gut microbiomes were less mature in the after-pandemic cohort than in the before-pandemic cohort in the children group(3–12 years old)and had features of a significantly younger age(average of 1.86 years).Lastly,body weight and height were significantly lower in the after-pandemic cohort than in the before-pandemic cohort in infants(<1 year of age),which was associated with a decrease in bacterial loads in the fecal microbiome.

关键词： gut microbiome COVID-19 pandemic quantitative microbiome profiling children health

Advances in ground heat exchangers for space heating and cooling:Review and perspectives

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Energy and Built Environment 2024年第2期5卷 255-269页

作者： Ping cui Weibo Yang Wenke Zhang Ke Zhu Jeffrey D.Spitler Mingzhi yu School of Thermal Engineering Shandong Jianzhu UniversityJinanShandong 250101China College of Electrical Energy and Power EngineeringYangzhou UniversityYangzhouJiangsu 225127China Department of Mechanical Engineering Oklahoma State UniversityStillwaterOKUSA

As a renewable energy source,geothermal energy has been widely used to provide space heating and cooling for *** thermal performance of ground heat exchanger(GHE)is significant for the operating efficiency of the ground source heat pump(GSHP)*** paper presents a comprehensive review of developments and advances of three kinds of GHE,including vertical borehole GHE(VBGHE),Pile GHE(PGHE),and deep borehole GHE(DBGHE)which are currently popular in larger GSHP ***,analytical models proposed to ana-lyze heat transfer process of VBGHE with different geological conditions are summarized,such as homogenous or heterogeneous ground,with or without groundwater *** and short-time step models and measures to improve GHE thermal performance are also ***,a summary of research advances in PGHE is provided,which includes the heat transfer models of PGHE,the effects of geometric structure,oper-ation modes,pile spacing,use of phase change material(PCM),thermal properties of PCM,thermo-mechanical behavior and/or thermal performance of *** effects of groundwater flow direction and velocity on PGHE are also summarized in ***,models of three kinds of DBGHEs,i.e.,deep coaxial GHE(DCGHE),deep U-bend GHE(DUGHE)and super-long gravity heat pipe(SLGHP),are *** physical bases of the dif-ferent analytical models are elaborated and also their advantages and disadvantages are *** in numerical modelling and improving numerical model calculation speed of DCBHE,DCBHE array,and DUBHE are *** review provides a meaningful reference for the further study of GHEs.

关键词： Vertical borehole ground heat exchanger Pile ground heat exchanger Deep borehole ground heat exchanger Modelling

Infection and Genomic Characteristics of Campylobacter jejuni from a Patient Without Diarrhea — China, 2018

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China CDC weekly 2024年第33期6卷 846-851,I0001-I0005页

作者： Xiangdong Yang Wen Wang Chajin cui Binbin yu Qing Zhang Yanhua Wang Ecological Medicine Research Center National Key Laboratory of Intelligent Tracking and Forecasting for Infectious DiseasesNational Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina Department of Zoonotic Disease Control and Prevention Yunnan Institute of Endemic Diseases Control&PreventionDali Bai Autonomous PrefectureYunnan ProvinceChina Medical Laboratory Department Yunnan Luxi County People’s HospitalHonghe Hani-Yi Autonomous PrefectureYunnan ProvinceChina

Summary What is already known about this topic?A 20-month-old boy was admitted to the hospital with a maximum temperature of 40°C and a single ***,blood culture detected Francisella tularensis(***)using the VITEK 2 Compact *** is added by this report?After incubation of the patient’s blood for 48 hours,the cultured strain was identified as Campylobacter jejuni,named L8,excluding *** the genome sequence of L8,we found a novel Type VI Secretion System(T6SS),of which the conserved C-terminal VgrG domain from positions 561 to 884 showed significant *** are the implications for public health practice?It should be underscored that relying solely on automatic bacterial identification instruments for accurate strain identification is ***,our study suggests that the potential effect of T6SS should be considered when studying the genetic features of a patient’s clinical phenotypes.

关键词： Campylobacter admitted culture

Flexible polydimethylsiloxane pressure sensor with micro-pyramid structures and embedded silver nanowires: A novel application in urinary flow measurement

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NANOTECHNOLOGY AND PRECISION ENGINEERING 2024年第3期7卷 1-12页

作者： Wang, Ben-Song Gao, Ang Huang, Song-Wei Ning, Qi-hong Zhou, Cheng Song, Qi-Xiang cui, Da-Xiang Shanghai Jiao Tong Univ Sch Elect Informat & Elect Engn Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ Renji Hosp Sch Med Dept Urol Shanghai 200240 Peoples R China

Flexible pressure sensors are lightweight and highly sensitive, making them suitable for use in small portable devices to achieve precise measurements of tiny forces. This article introduces a low-cost and easy-fabrication strategy for piezoresistive flexible pressure sensors. By embedding silver nanowires into a polydimethylsiloxane layer with micro-pyramids on its surface, a flexible pressure sensor is created that can detect low pressure (17.3 Pa) with fast response (<20 ms) and high sensitivity (69.6 mA kPa(-1)). Furthermore, the pressure sensor exhibits a sensitive and stable response to a small amount of water flowing on its surface. On this basis, the flexible pressure sensor is innovatively combined with a micro-rotor to fabricate a novel urinary flow-rate meter (uroflowmeter), and results from a simulated human urination experiment show that the uroflowmeter accurately captured all the essential shape characteristics that were present in the pump-simulated urination curves. Looking ahead, this research provides a new reference for using flexible pressure sensors in urinary flow-rate monitoring.

关键词： Flexible pressure sensor Silver nanowires Portable device Uroflowmeter Healthcare HIGH-PERFORMANCE UROFLOWMETRY SYMPTOMS

“Buckets effect”in the kinetics of electrocatalytic reactions

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Journal of Energy Chemistry 2024年第2期89卷 388-396,I0010页

作者： Haowen cui Yan-Xia Chen Hefei National Laboratory for Physical Sciences at Microscale Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

In this study,we systematically investigated the effect of proton concentration on the kinetics of the oxygen reduction reaction(ORR)on Pt(111)in acidic *** results demonstrate a rectangular hyperbolic relationship,i.e.,the ORR current excluding the effect of other variables increases with proton concentration and then tends to a constant *** consider that this is caused by the limitation of ORR kinetics by the trace oxygen concentration in the solution,which determines the upper limit of ORR kinetics.A model of effective concentration is further proposed for rectangular hyperbolic relationships:when the reactant concentration is high enough to reach a critical saturation concentration,the effective reactant concentration will become a constant *** could be due to the limited concentration of a certain reactant for reactions involving more than one reactant or the limited number of active sites available on the *** study provides new insights into the kinetics of electrocatalytic reactions,and it is important for the proper evaluation of catalyst activity and the study of structureperformance relationships.

关键词： Oxygen reduction reaction Kinetics Zero order Rectangular hyperbolic relationship pH effect

Endogenous retrovirus activation: potential for immunology and clinical applications

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National Science Review 2024年第4期11卷 21-23页

作者： Jundan yu Peishan Qiu Jingwen Ai Bo Liu Guan-Zhu Han Fan Zhu Wenhong Zhang Jie cui Department of Infectious Diseases Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response National Medical Center for Infectious Diseases Huashan Hospital Shanghai Medical College Fudan University CAS Key Laboratory of Molecular Virology &Immunology Shanghai Institute of Immunity and Infection Chinese Academy of Sciences University of Chinese Academy of Sciences Shanghai Huashen Institute of Microbes and Infections College of Life Sciences Nanjing Normal University State Key Laboratory of Virology and Department of Medical Microbiology School of Basic Medical SciencesWuhan University The Institute of Infection and Health Research Fudan University Key Laboratory of Medical Molecular Virology(MOE/MOH) Shanghai Medical CollegeFudan University Laboratory for Marine Biology and Biotechnology Qingdao Marine Science and Technology Center

Endogenous retroviruses (ERVs), the remnants of ancient retrovirus infections, constitute approximately 8% of the human genome and play important roles in human evolution, development,and diseases. Multiple drugs, such as DNA methyltransferase inhibitors and lysine-specific histone demethylase 1inhibitors, reactivate ERVs, induce viral mimicry and trigger innate immune responses to enhance tumor immunogenicity.

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