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补阳还五汤联合解痉平衡针刺法治疗脑卒中后偏瘫疗效观察及对血清HDAC3水平的影响

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新中医 2024年第10期56卷 20-24页

作者：陈文斌胡悦怡吴梦媛金华市中心医院康复科浙江金华321000

目的:观察补阳还五汤联合解痉平衡针刺法治疗脑卒中后偏瘫的临床疗效及对血清组蛋白去乙酰化酶3(HDAC3)水平的影响。方法:将120例脑卒中后偏瘫患者随机分为对照组和治疗组各60例。对照组给予常规西医疗法治疗,治疗组在对照组基础上联合... 详细信息

目的:观察补阳还五汤联合解痉平衡针刺法治疗脑卒中后偏瘫的临床疗效及对血清组蛋白去乙酰化酶3(HDAC3)水平的影响。方法:将120例脑卒中后偏瘫患者随机分为对照组和治疗组各60例。对照组给予常规西医疗法治疗,治疗组在对照组基础上联合补阳还五汤治疗。观察2组临床疗效、躯干屈伸肌群肌力、步态及血清HDAC3水平变化。结果:治疗组总有效率为86.67%,对照组为68.33%,2组比较,差异有统计学意义(P0.05);2组患侧腹直肌、竖脊肌的肌力RMS值均较治疗前升高(P<0.05),且治疗组患侧腹直肌、竖脊肌的肌力RMS值均高于对照组(P<0.05)。治疗后,2组步频、步速、跨步长比例均较治疗前增加(P<0.05),且治疗组上述3项指标值均高于对照组(P<0.05)。治疗后,2组血清HDAC3水平均较治疗前降低(P<0.05),且治疗组HDAC3水平低于对照组(P<0.05)。结论:补阳还五汤联合解痉平衡针刺法治疗脑卒中后偏瘫效果较好,能够明显改善躯干屈伸肌群肌力及步态,降低血清HDAC3水平。

关键词：脑卒中偏瘫补阳还五汤解痉平衡针刺法躯干屈伸肌群肌力步态组蛋白去乙酰化酶3

The Monotone Robin-Robin Domain Decomposition Methods for the Elliptic Problems with Stefan-Boltzmann Conditions

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Communications in Computational Physics 2010年第8期8卷 642-662页

作者： wenbin chen Jin cheng Masahiro Yamamoto Weili Zhang School of Mathematical Sciences and Key Laboratory of Computational Physics(MOE) Fudan UniversityShanghai200433China Shanghai Key Laboratory of Intelligent Information Processing Fudan UniversityShanghai200433China Department of Mathematical Sciences University of TokyoTokyo153-8914Japan

This paper is concerned with the elliptic problems with nonlinear StefanBoltzmann boundary *** combining with the monotone method,the RobinRobin domain decomposition methods are proposed to decouple the nonlinear interface and boundary *** monotone properties are verified for both the multiplicative and the additive domain decomposition *** numerical results confirm the theoretical analysis.

关键词： Nonlinear Stefan-Boltzmann condition monotone methods Robin-Robin domain decomposition method

Mechatronic Design of a Synergetic Upper Limb Exoskeletal Robot and Wrench-based Assistive Control

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Journal of Bionic Engineering 2018年第2期15卷 247-259页

作者： Lei He Caihua Xiong Kai Liu Jian Huang Chang He wenbin chen School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China School of Automation Huazhong University of Science and Technology Wuhan 430074 China

Upper limb exoskeletal rehabilitation robots are required to assist patients＇ arms to perform activities of daily living according to their motion intentions. In this paper, we address two questions： how to design an exoskeletal robot which can mechanically reconstruct functional movements using only a few actuators and how to establish wrench-based assistive control. We first show that the mechanism replicating the synergic feature of the human upper limb can be designed in a recursive manner, meaning that the entire robot can be constructed from two basic mechanical units. Next, we illustrate that the assistive control for the synergetic exoskeletal robot can be transformed into an optimization problem and a Riemannian metric is proposed to generate anthropomorphic reaching movements according to contact forces and torques. Finally, experiments are carried out to verify the functionality of the proposed theory.

关键词： upper limb exoskeletal robot postural synergy wrench based assistive control

A level set method to reconstruct the discontinuity of the conductivity in EIT

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Science China Mathematics 2009年第1期52卷 29-44页

作者： chen wenbin chenG Jin LIN JunShan WANG LiFeng School of Mathematical Sciences Fudan UniversityShanghai 200433China Department of Mathematics Michigan State UniversityEast LansingMI 48824USA

In this paper, one level set method is applied to finding the interface of discontinuity of the conductivity in EIT(electrical impedance tomography) problem. By choosing one suitable velocity function, a level set reconstruction algorithm is proposed. The theoretical results for EIT problem and regularization are given. Finally the numerical examples demonstrate that the reconstruction algorithm is efficient and stable.

关键词： EIT reconstruction algorithm level set method 34K29 35J05

Belief reliability modeling and analysis for planetary reducer considering multi-source uncertainties and wear

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Journal of Systems Engineering and Electronics 2021年第5期32卷 1246-1262页

作者： LI Yun JIANG Kaige ZENG Ting chen wenbin LI Xiaoyang LI Deyong ZHANG Zhiqiang Beijing Spacecraft Manufacturing Co. LtdChina Academy of Space TechnologyBeijing 100094China School of Reliability and Systems Engineering Beihang UniversityBeijing 100191China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing 100191China

The planetary reducer is a common type of transmission mechanism,which can provide high transmission accuracy and has been widely used,and it is usually required with high reliability of transmission characteristics in *** the manufacturing and usage stages of planetary reducers,uncertainties are ubiquitous and wear is inevitable,which affect the transmission characteristics and the reliability of planetary *** this paper,belief reliability modeling and analysis considering multi-uncertainties and wear are proposed for planetary ***,based on the functional principle and the influence of wear,the performance margin degradation model is established using the hysteresis error as the key performance parameter,where the degradation is mainly caused by the accumulated *** that,multi-source uncertainties are analyzed and quantified separately,including manufacturing errors,uncertainties in operational and environmental conditions,and uncertainties in performance ***,the belief reliability model is established based on the performance margin degradation model.A case study of a planetary reducer is applied and the reliability sensitivity analysis is implemented to show the practicability of the proposed *** results show that the proposed method can provide some suggestions to the design and manufacturing phases of the planetary reducer.

关键词： belief reliability planetary reducer performance margin wear multi-source uncertainty

A novel numerical simulation of CO_(2) immiscible flooding coupled with viscosity and starting pressure gradient modeling in ultra-low permeability reservoir

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Frontiers of Earth Science 2023年第3期17卷 884-898页

作者： Jie CHI Binshan JU Jiabei WANG Xing ZHANG wenbin chen Mengfei ZHANG School of Big Data and Fundamental Sciences Shandong Institute of Petroleum and Chemical TechnologyDongying 257061China School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Geological Evaluation and Development Engineering of Unconventional Natural Gas Energy Beijing 100083China School of Petroleum Engineering Chongqing University of Science&TechnologyChongqing 401331China Research Institute of Petroleum Engineering Technology Shengli Oilfield CompanySINOPECDongying 257000China

CO_(2) immiscible flooding is an environmentally-friendly and effective method to enhance oil recovery in ultra-low permeability reservoirs.A mathematical model of CO_(2) immiscible flooding was developed,considering the variation in crude oil viscosity and starting pressure gradient in ultra-low permeability reservoirs based on the non-Darcy percolation *** mathematical model and numerical simulator were developed in the C++language to simulate the effects of fluid viscosity,starting pressure gradient,and other physical parameters on the distribution of the oil pressure field,oil saturation field,gas saturation field,oil viscosity field,and oil *** results showed that the formation pressure and pressure propagation velocity in CO_(2) immiscible flooding were lower than the findings without considering the starting pressure *** formation oil content saturation and the crude oil formation viscosity were higher after the consideration of the starting pressure *** viscosity of crude oil considering the initiation pressure gradient during the formation was higher than that without this gradient,but the yield was lower than that *** novel mathematical models helped the characterization of seepage resistance,revealed the influence of fluid property changes on seepage,improved the mathematical model of oil seepage in immiscible flooding processes,and guided the improvement of crude oil recovery in immiscible flooding processes.

关键词： viscosity starting pressure gradient flow simulation CO_(2)immiscible flooding ultra-low permeability reservoir

Research on the feasibility of storage and estimation model of storage capacity of CO_(2)in fissures of coal mine old goaf

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International Journal of Mining Science and Technology 2023年第6期33卷 675-686页

作者： Yang Ding Shugang Li Bing Zhu Haifei Lin Jingfei Zhang Junhong Tan wenbin chen School of Safety Science and Engineering Xi’an University of Science and TechnologyXi’an 710054China Western Coal Gas Intelligent Draining Engineering Research Center China National Coal AssociationXi’an 710054China

The concept of the carbon cycle in the old goaf of a coal mine based on CO_(2)utilization and storage was put forward adhering to the principle of low-carbon development,utilization of space resources in old goafs,and associated gas resources ***,the evolution characteristics of overburden fissures in the goaf of the case was studied using a two-dimensional physical similarity simulation test,the sealing performance of the caprocks after stabilization was analyzed,and the fissures were counted and ***,the process of gaseous CO_(2)injection in the connected fissure was simulated by Ansys Fluent software,and the migration law and distribution characteristics of CO_(2)under the condition of gaseous CO_(2)injection were ***,the estimation models of free CO_(2)storage capacity in the old goaf were constructed considering the proportion of connected fissure and the effectiveness of CO_(2)*** CO_(2)storage capacity in the old goaf of the case coal mine was *** results showed that a caprock group of“hard-thickness low-permeability hard-thickness”was formed after the caprock-fissures system in the goaf of the case tended to be stable *** connected fissure,occlude cracks,and micro-fractures in the goaf accounted for 85.5%,8.5%,and 6%of the total fissures,*** CO_(2)first migrated to the bottom of the connected fissure after CO_(2)was injected into the goaf,then spread horizontally along the bottom of the connected fissure after reaching the bottom,and finally spread longitudinally after filling the bottom of the entire connected *** theoretical and effective storage capacities of free CO_(2)at normal temperature and pressure in the old goaf of the case were 9757 and 7477 t,*** effective storage capacity of free CO_(2)at normal temperature and pressure in the old goaf after all minefield mined was 193404 *** research can provide some reference for the coal mining ind

关键词： Carbon cycle Old goaf Fissure CO_(2)storage Feasibility Storage capacity

A review of machine learning-based failure management in optical networks

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Science China(Information Sciences) 2022年第11期65卷 47-65页

作者： Danshi WANG Chunyu ZHANG wenbin chen Hui YANG Min ZHANG Alan Pak Tao LAU State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Photonics Research Center Department of Electrical Engineering The Hong Kong Polytechnic University The Hong Kong Polytechnic University Shenzhen Research Institute

Failure management plays a significant role in optical networks. It ensures secure operation,mitigates potential risks, and executes proactive protection. Machine learning(ML) is considered to be an extremely powerful technique for performing comprehensive data analysis and complex network management and is widely utilized for failure management in optical networks to revolutionize the conventional manual methods. In this study, the background of failure management is introduced, where typical failure tasks,physical objects, ML algorithms, data sources, and extracted information are illustrated in detail. An overview of the applications of ML in failure management is provided in terms of alarm analysis, failure prediction, failure detection, failure localization, and failure identification. Finally, the future directions on ML for failure management are discussed from the perspective of data, model, task, and emerging techniques.

关键词： machine learning artificial intelligence failure management optical network

A High-Quality Preconditioning Technique for Multi-Length-Scale Symmetric Positive Definite Linear Systems

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Numerical Mathematics(Theory,Methods and Applications) 2009年第4期2卷 469-484页

作者： Ichitaro Yamazaki Zhaojun Bai wenbin chen Richard Scalettar Department of Computer Science University of California Davis CA 95616 USA School of Mathematical Sciences Fudan University Shanghai 200433 China Department of Physics University of California Davis CA95616 USA

We study preconditioning techniques used in conjunction with the conjugate gradient method for solving multi-length-scale symmetric positive definite linear systems originating from the quantum Monte Carlo simulation of electron interaction of correlated materials. Existing preconditioning techniques are not designed to be adaptive to varying numerical properties of the multi-length-scale systems. In this paper, we propose a hybrid incomplete Cholesky （HIC） preconditioner and demonstrate its adaptivity to the multi-length-scale systems. In addition, we propose an extension of the compressed sparse column with row access （CSCR） sparse matrix storage format to efficiently accommodate the data access pattem to compute the HIC preconditioner. We show that for moderately correlated materials, the HIC preconditioner achieves the optimal linear scaling of the simulation. The development of a linear-scaling preconditioner for strongly correlated materials remains an open topic.

关键词： Preconditioning multi-length-scale incomplete Cholesky factorization quantum MonteCarlo simulation.