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Effect of budesonide on hospitalization rates among children with acute asthma attending paediatric emergency department:a systematic review and meta-analysis

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World Journal of Pediatrics 2021年第2期17卷 152-163页

作者： cheng-yao Li Zhang Liu Department of Pediatrics The First Affiliated Hospital of Dalian Medical University222 Zhongshan RdLiaoning ProvinceDalian 116011China

Introduction The efficacy of inhaled budesonide for managing moderate-to-severe acute exacerbations in children is not ***,this study aimed to evaluate hospital admission rates,need for use of systemic corticosteroids,length of hospital stay and adverse events when inhaled budesonide is added to standard pediatric emergency department management of moderate-to-severe acute exacerbations of *** A systematic search was conducted in PubMed,Scopus,CENTRAL(Cochrane Central Register of Controlled Trials)and Google scholar *** controlled trials that evaluated the effect of nebulized budesonide in moderate-to-severe acute exacerbations of asthma in pediatric patients were included for this *** analysis was done using STATA version *** A total of 16 RCTs were *** receiving nebulized budesonide had 43%lower risk of being hospital-ized(RR 0.57;95%CI,0.39;0.85)and 66%lower risk of requiring systemic corticosteroids(RR 0.34;95%CI,0.21;0.55)compared with those receiving *** were no differences in the length of hospital stay(Hedges's g standardized mean difference-1.53;95%CI,-3.64;0.58)and risk of adverse events(RR 0.87,95%CI;0.65;1.17)between the two *** was no evidence of publication bias for any of the outcomes *** The findings of this meta-analysis support the use of inhaled budesonide in reducing risk of hospitalization and the need for systemic corticosteroids among children with acute moderate-to-severe asthma exacerbation.

关键词： Acute asthma Budesonide Corticosteroids Hospital admission Pediatric emergency

Biphase-to-monophase structure evolution of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) toward ultradurable Na-ion batteries

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Carbon Energy 2024年第9期6卷 66-79页

作者： Mengting Liu Zhiwei cheng Xu Zhu Haojie Dong Tianran Yan Liang Zhang Lu Zheng Hu-Rong yao Xian-Zuo Wang Lianzheng Yu Bing xiao yao xiao Peng-Fei Wang State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringCenter of Nanomaterials for Renewable EnergyXi'an Jiaotong UniversityXi'anShaanxiChina Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhouJiangsuChina Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and EnergyFujian Normal UniversityFuzhouFujianChina Wenzhou Key Laboratory of Sodium-Ion Batteries Institute for Carbon NeutralizationWenzhou University Technology InnovationWenzhouZhejiangChina

Layered composite oxide materials with O3/P2 biphasic crystallographic structure typically demonstrate a combination of high capacities of the O3 phase and high operation voltages of the P2 ***,their practical applications are seriously obstructed by difficulties in thermodynamic phase regulation,complicated electrochemical phase transition,and unsatisfactory cycling ***,we propose an efficient structural evolution strategy from biphase to monophase of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) through Li+*** role of Li+substitution not only simplifies the unfavorable phase transition by altering the local coordination of transition metal(TM)cations but also stabilizes the cathode–electrolyte interphase to prevent the degradation of TM cations during battery *** a result,the thermodynamically robust O_(3)-Na_(0.826)Li_(0.06)Ni_(0.27)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) cathode delivers a high capacity of 139.4 mAh g^(-1) at 0.1 C and shows prolonged cycling life at high rates,with capacity retention of 81.6%at 5 C over 500 *** work establishes a solid relationship between the thermodynamic structure evolution and electrochemistry of layered cathode materials,contributing to the development of long-life sodium-ion batteries.

关键词： electrochemistry Li+substitution Na-ion batteries O_(3)phase phase transition

Ultrasonographic evaluation of the rete testis thickness:a promising approach to differentiate obstructive from nonobstructive azoospermia

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Asian Journal of Andrology 2023年第6期25卷 725-730页

作者： Xin Li Ru-Hui Tian Peng Li Chun-xiao Li Ming-Hua yao Chen-cheng yao xiao-Bo Wang Li-Ren Jiang Zheng Li Rong Wu Department of Ultrasound Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China Department of Andrology The Center for Men’s HealthUrologic Medical CenterShanghai Key Laboratory of Reproductive MedicineShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China Department of Pathology Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China

This study aimed to evaluate the ability of rete testis thickness(RTT)and testicular shear wave elastography(SWE)to differentiate obstructive azoospermia(OA)from nonobstructive azoospermia(NOA).We assessed 290 testes of 145 infertile males with azoospermia and 94 testes of 47 healthy volunteers at Shanghai General Hospital(Shanghai,China)between August 2019 and October *** testicular volume(TV),SWE,and RTT were compared among patients with OA and NOA and healthy *** diagnostic performances of the three variables were evaluated using the receiver operating characteristic *** TV,SWE,and RTT in OA differed significantly from those in NOA(all P≤0.001)but were similar to those in healthy *** with OA and NOA were similar at TVs of 9–11 cm^(3)(P=0.838),with sensitivity,specificity,Youden index,and area under the curve of 50.0%,84.2%,0.34,and 0.662(95%confidence interval[CI]:0.502–0.799),respectively,for SWE cut-off of 3.1 kPa;and 94.1%,79.2%,0.74,and 0.904(95%CI:0.811–0.996),respectively,for RTT cut-off of 1.6 *** results showed that RTT performed significantly better than SWE in differentiating OA from NOA in the TV overlap *** conclusion,ultrasonographic RTT evaluation proved a promising diagnostic approach to differentiate OA from NOA,particularly in the TV overlap range.

关键词： azoospermia differential diagnosis rete testis thickness shear wave elastography

Elimination of Anti-spiral Waves by Local Inhomogeneity in Oscillatory Systems

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Chinese Journal of Chemical Physics 2008年第6期21卷 575-580页

作者： Fu-cheng Liu xiao-fei Wang College of Physics Science & Technology Hebei University Baoding 071002 China

Anti-spiral waves are controlled in an oscillatory system by using a local inhomogeneity. The inhomogeneity acts as a wave source, and gives rise to the propagating plane waves, tt is found that there is a critical pacemaking domain size below which no wave will be created at all. Two types of ordered waves （target waves and traveling waves） are created depending on the geometry of the local inhomogeneity. The competition between the anti-spiral waves and the ordered waves is discussed. Two different competition mechanisms were observed, which are related to the ordered waves obtained from different local inhomogeneities. It is found that traveling waves with either lower frequency or higher frequency can both eliminate the anti-spiral waves, while only the target waves with lower absolute value of frequency can eliminate the anti-spiral waves. This method also applies to outwardly rotating spiral waves. The control mechanism is intuitively explained and the control method is easily operative.

关键词： Anti-spiral wave Traveling wave Inhomogeneity Oscillatory system

Adaptive Multi-phenotype Based Gene Expression Programming Algorithm

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Chinese Journal of Electronics 2016年第5期25卷 807-816页

作者： LI Qu cheng Hongbing yao Min School of Computer Science and Technology Zhejiang University of Technology College of Computer Science Zhejiang University State Key Laboratory for Novel Software Technology Nanjing University

Expression theory is the mathematical foundation of evolutionary computation. In order to investigate the problems in Gene expression programming(GEP) expression theory, we clarified the difference between genotypic expression space and phenotypic expression space. We also presented phenotypic expression space definition and theory. Then we analyzed the reason of good and bad performance of different GEP algorithms based on expression space theory. We also proposed a new Adaptive multi-phenotype gene expression programming(AMGEP),in which the potential of genes is fully activated with gene combination. Experiments on benchmark problems showed that genotypic expression space and phenotypic expression space theory can explain the different performance of different algorithms and showed that AMGEP outperform other GEP algorithms in terms of search ability.

关键词： Gene expression programming(GEP) Genotype Phenotype Population diversity

Experimental Study on Momentum Transfer of Surface Texture in Taylor-Couette Flow

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Chinese Journal of Mechanical Engineering 2017年第3期30卷 754-761页

作者： Yabo XUE Zhenqiang yao De cheng state key laboratory of mechanical system and vibration shanghai jiao tong universityShanghai 200240China school of mechanical engineering shanghai jiao tong universityShanghai 200240China

The behavior of Taylor-Couette （TC） flow has been extensively studied. However, no suitable torque prediction models exist for high-capacity fluid machinery. The Eckhardt-Grossmann-Lohse （EGL） theory, derived based on the Navier-Stokes equations, is proposed to model torque behavior. This are the significant energy theory suggests that surfaces transfer interfaces between cylinders and annular flow. This study mainly focuses on the effects of surface texture on momentum transfer behavior through global torque measurement. First, a power-law torque behavior model is built to reveal the relationship between dimensionless torque and the Taylor number based on the EGL theory. Second, TC flow appa- ratus is designed and built based on the CNC machine tool to verify the torque behavior model. Third, four surface texture films are tested to check the effects of surface texture on momentum transfer. A stereo microscope and three-dimensional topography instrument are employed to analyze surface morphology. Global torque behavior is measured by rotating a multi component dynamometer, and the effects of surface texture on the annular flow behavior are observed via images obtained using a high-speed camera. Finally, torque behaviors under four differentsurface conditions are fitted and compared. The experi- mental results indicate that surface textures have a remarkable influence on torque behavior, and that the peak roughness of surface texture enhances the momentum transfer by strengthening the fluctuation in the TC flow.

关键词： Torque behavior - Momentum transferbehavior Surface texture Experimental study TaylorCouette flow (TC flow)

Tame Kernels of Pure Cubic Fields

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Acta Mathematica Sinica,English Series 2012年第4期28卷 771-780页

作者： xiao Yun cheng School of Science Nanjing University of Aeronautics and Astronautics

In this paper, we study the p-rank of the tame kernels of pure cubic fields. In particular, we prove that for a fixed positive integer m, there exist infinitely many pure cubic fields whose 3-rank of the tame kernel e... 详细信息

关键词： Tame kernel pure cubic fields class group 3-rank

IMAGE SEGMENTATION BY PIECEWISE CONSTANT MUMFORD-SHAH MODEL WITHOUT ESTIMATING THE CONSTANTS

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Journal of Computational Mathematics 2006年第3期24卷 435-443页

作者： Xue-cheng Tai Chang-hui yao CIPR Department of Mathematics University of Bergen Norway Department of Mathematics University of Bergen Norway

In this work, we try to use the so-called Piecewise Constant Level Set Method （PCLSM） for the Mumford-Shah segmentation model. For image segmentation, the Mumford-Shah model needs to find the regions and the constant values inside the regions for the segmen- tation. In order to use PCLSM for this purpose, we need to solve a minimization problem using the level set function and the constant values as minimization variables. In this work, we test on a model such that we only need to minimize with respect to the level set function, i.e., we do not need to minimize with respect to the constant values. Gradient descent method and Newton method are used to solve the Euler-Lagrange equation for the minimization problem. Numerical experiments are given to show the efficiency and advantages of the new model and algorithms.

关键词： PCLSM Image Segmentation Mumford-Shah model.

Durable and stretchable nanocomposite ionogels with high thermoelectric property for low-grade heat harvesting

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Science China(Technological Sciences) 2023年第1期66卷 267-280页

作者： xiao Meng yao Yuan LIU WenGuang School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin300350China

Stretchable ionic thermoelectric(i-TE) materials have attracted growing interest in converting low-grade thermal energy into electricity. However, substantial improvement on i-TE performance of quasi-solid ionogels remains a significant ***, a nanocomposite ionogel with skin-like stretchability, high i-TE performance, thermostability and durability is prepared by hybridizing ionic liquid(IL) and Laponite nanosheets into waterborne polyurethane(WPU). With multiple H-bond, WPU can accommodate a higher content of IL, thereby improving its ionic conductivity. After cation exchange between IL and Laponite,the negatively charged Laponite sheets and released Na+can enhance the ionic Seebeck coefficient by enlarging thermophoretic mobility difference between the cations and anions in ionogel. Besides, incorporation of Laponite causes the decrease of thermal conductivity. Thus, the WPU-IL-Laponite ionogel exhibits a high ionic thermopower of 44.1 m V K-1, high ionic conductivity of 14.1 m S cm-1and low thermal conductivity of 0.43 W m-1K-1at a relative humidity of 90%. The corresponding ionic figure of merit of the ionogel is 1.90±0.27. Moreover, the ionogel demonstrates excellent durability during repeated stretching *** stretchable ionogel can be fabricated into ionic thermoelectric capacitor to convert thermal energy from solar radiation into electricity.

关键词： multiple H-bond waterborne polyurethane nanocomposite ionogel ionic thermoelectric capacitors low-grade heat harvesting