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Study of Viscoelastic Properties of White Carbon Black Reinforced Synthetic Polyisoprene

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Chinese Journal of Polymer Science 2016年第4期34卷 457-465页

作者： guang-jun Cui shi-wei Wang Peng-gang Yin 郭林 Key Laboratory of Bio-Inspired-Smart Interfacial Science and Technology of Ministry of Education School of Chemistry and EnvironmentBeihang UniversityBeijing 100191China

The viscoelastic properties of synthetic polyisoprenes （PI） reinforced by white carbon black （WCB） have been investigated and compared with WCB reinforced natural rubber （NR）, including cure characteristics, physio-mechanical and dynamic mechanical properties. Compared with NR, PI loaded with the same amount of WCB （PI/WCB） exhibited shorter scorch time and optimal cure time, indicating that WCB fillers are comparatively easier to conjugate with PI. The tensile strength and elongation at break decreased with WCB filling in both PI and NR vulcanizates. The hardness of the rubber vulcanizates increased with the WCB filling in the rubber matrix. PI/WCB blends exhibited smaller hardness data, lower tensile strength, as well as lower elongation at break and tensile stress. Increasing the amount of WCB in rubber matrix induced the Payne effect. However, the Payne effect is much more obvious for the PI/WCB system, and PI/WCB also displayed higher storage modulus whereas lower loss modulus and loss tangent than NR/WCB, which could all be attributed to the poor dispersibilities of WCB in the PI matrix.

关键词： Reinforcement White carbon black Synthetic polyisoprene Natural rubber Viscoelastic properties Payne effect.

Dynamics Behaviors and Scaling in Intermittent Turbulence of a Shell Model

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Communications in Theoretical Physics 2009年第1期51卷 149-152页

作者： SUN Peng CHEN shi-gang WANG guang-Rui physics Department Anshan Normal College Anshan 114005 China Graduate School of China Academy of Engineering Physics P.O. Box 2101 Beijing 100088 China Institute of Applied Physics and Computational Mathematics P.O. Box 8009 Beijing 100088 China

In this paper, the dynamics behaviors on fo-δ parameter surface is investigated for Gledzer-Ohkitani- Yamada model We indicate the type of intermittency chaos transitions is saddle node bifurcation. We plot phase diagram on fo-δ parameter surface, which is divided into periodic, quasi-periodic, and intermittent chaos areas. By means of varying Taylor-microscale Reynolds number, we calculate the extended self-similarity of velocity structure function.

关键词： saddle node bifurcation critical scaling Taylor-microscale Reynolds number extended self-similarity (ESS)

Probability Distribution Function of Passive Scalars in Shell Models

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Communications in Theoretical Physics 2008年第4期49卷 1033-1038页

作者： ZHANG Xiao-Qiang WANG guang-Rui CHEN shi-gang Department of Physics Hebei Normal University Shijiazhuang 050016 China Graduate School of the China Academy of Engineering Physics P.O. Box 8009（28） Beijing 100088 China Center for Nonlinear Studies Institute of Applied Physics and Computational Mathematics Beijing 100088 China

A shell-model version of passive scalar problem is introduced, which is inspired by the model of K. Ohkitani and M. Yakhot [K. Ohkitani and M. Yakhot, Phys. Rev. Lett. 60 （1988） 983; K. Ohkitani and M. Yakhot, Prog. Theor. Phys. 81 （1988） 329]. As in the original problem, the prescribed random velocity field is Gaussian and 5 correlated in time. Deterministic differential equations are regarded as nonlinear Langevin equation. Then, the Fokker-Planck equations of PDF for passive scalars are obtained and solved numerically. In energy input range （n 〈 5, n is the shell number.）, the probability distribution function （PDF） of passive scalars is near the Gaussian distribution. In inertial range （5≤ n ≤ 16） and dissipation range （n ≥ 17）, the probability distribution function （PDF） of passive scalars has obvious intermittence. And the scaling power of passive scalar is anomalous. The results of numerical simulations are compared with experimental measurements.

关键词： shell model passive scalar distribution function

Incidence and prognosis of olfactory and gustatory dysfunctions related to SARS-CoV-2 Omicron strain infection in China:A national multicenter survey of 35,566 individuals

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 113-120页

作者： Meng-Fan Liu Rui-Xia Ma Xian-Bao Cao Hua Zhang Shui-Hong Zhou Wei-Hong Jiang Yan Jiang Jing-Wu Sun Qin-Tai Yang Xue-Zhong Li Ya-Nan Sun Li shi Min Wang Xi-Cheng Song Fu-Quan Chen Xiao-Shu Zhang Hong-Quan Wei Shao-Qing Yu Dong-Dong Zhu Luo Ba Zhi-Wei Cao Xu-Ping Xiao Xin Wei Zhi-Hong Lin Feng-Hong Chen Chun-guang Shan guang-Ke Wang Jing Ye Shen-Hong Qu Chang-Qing Zhao Zhen-Lin Wang Hua-Bin Li Feng Liu Xiao-Bo Cui Sheng-Nan Ye Zheng Liu Yu Xu Xiao Cai Wei Huang Ru-Xin Zhang Yu-Lin Zhao Guo-Dong Yu guang-gang shi Mei-Ping Lu Yang Shen Yu-Tong Zhao Jia-Hong Pei Shao-Bing Xie Long-gang Yu Ye-Hai Liu Shao-Wei Gu Yu-Cheng Yang Lei Cheng Jian-Feng liu Graduate School of Beijing University of Chinese Medicine BeijingChina Department of Otorhinolaryngology Head and Neck Surgery China-Japan Friendship HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First People's Hospital of YinchuanYinchuanChina Department of Otorhinolaryngology The First People's Hospital of Yunnan ProvinceKunmingChina Department of Otorhinolaryngology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqiChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Xiangya Hospital Central South UniversityChangshaChina Department of Otorhinolaryngology Head and Neck Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of USTCHefeiChina Department of Otorhinolaryngology Head and Neck Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Qilu Hospital of Shandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Otolaryngology The Second Hospital of Shandong UniversityShandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery Peking University People's HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery Yantai Yuhuangding HospitalQingdao UniversityYantaiChina Department of Otorhinolaryngology Head and Neck Surgery Xijing HospitalThe Fourth Military Medical UniversityXi'anChina Gansu Provincial Center for Disease Control and Prevention LanzhouChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of China Medical UniversityShenyangChina Department of Otorhinolaryngology Head and Neck Surgery Tongji Hospit

Objective:This cross-sectional study aimed to determine the epidemiology of olfactory and gustatory dysfunctions related to COVID-19 in ***:This study was conducted by 45 tertiary Grade-A hospitals in *** and offline questionnaire data were obtained from patients infected with COVID-19 between December 28,2022,and February 21,*** collected information included basic demographics,medical history,smoking and drinking history,vaccination history,changes in olfactory and gustatory functions before and after infection,and other postinfection symptoms,as well as the duration and improvement status of olfactory and gustatory ***:Complete questionnaires were obtained from 35,566 *** overall incidence of olfactory and taste dysfunction was 67.75%.Being female or being a cigarette smoker increased the likelihood of developing olfactory and taste *** received four doses of the vaccine or having good oral health or being a alcohol drinker decreased the risk of such *** infection,the average olfactory and taste VAS scores were 8.41 and 8.51,respectively;after infection,they decreased to 3.69 and 4.29 and recovered to 5.83 and 6.55 by the time of the *** median duration of dysosmia and dysgeusia was 15 and 12 days,respectively,with 0.5%of patients having symptoms lasting for more than 28 *** overall self-reported improvement rate was 59.16%.Recovery was higher in males,never smokers,those who received two or three vaccine doses,and those that had never experienced dental health issues,or chronic accompanying ***:The incidence of dysosmia and dysgeusia following infection with the SARS-CoV-2 virus is high in *** and prognosis are influenced by several factors,including sex,SARS-CoV-2 vaccination,history of head-facial trauma,nasal and oral health status,smoking and drinking history,and the persistence of accompanying symptoms.

关键词： epidemiologic studies incidence olfactory disorders prognosis SARS-CoV-2 taste disorders

Segmented Spiral Waves and Anti-phase Synchronization in a Model System with Two Identical Time-Delayed Coupled Layers

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Communications in Theoretical Physics 2008年第1期49卷 174-180页

作者： YUAN Guo-Yong YANG shi-Ping WANG guang-Rui CHEN shi-gang Department of Physics Hebei Normal University Shijiazhuang 0500167 China Institute of Applied Physics and Computational Mathematics P.O. Box 8009 Beijing 100088 China

In this paper, we consider a model system with two identical time-delayed coupled layers. Synchronization and anti-phase synchronization are exhibited in the reactive system without diffusion term. New segmented spiral waves, which are constituted by many thin trips, are found in each layer of two identical time-delayed coupled layers, and are different from the segmented spiral waves in a water-in-oil aerosol sodium bis（2-ethylhexyl） sulfosuccinate （AOT） microemulsion （ME）（BZ-AOT system）, which consists of many small segments. ＂Anti-phase spiral wave synchronization＂ can be realized between the first layer and the second one. For different excitable parameters, we also give the minimum values of the coupling strength to generate segmented spiral waves and the tip orbits of spiral waves in the whole bilayer.

关键词： spiral wave synchronization anti-phase synchronization

一种ICEEMDAN-CNN-SVR滑坡位移组合预测模型

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三峡大学学报（自然科学版） 2025年第1期47卷 37-43页

作者：石化波王刚曾怀恩中煤湖北地质勘察基础工程有限公司武汉430070 中铁建城建交通发展有限公司江苏苏州215000 湖北长江三峡滑坡国家野外科学观测研究站湖北宜昌443002 三峡大学土木与建筑学院湖北宜昌443002

滑坡位移预测是滑坡早期预警系统的重要组成部分,针对位移分解程度与特征选取深入程度不够导致滑坡位移预测精度不高的问题,提出一种ICEEMDAN-CNN-SVR滑坡位移组合预测模型:为了解决位移分解程度不够的问题,该模型首先运用ICEEMDAN分解... 详细信息

滑坡位移预测是滑坡早期预警系统的重要组成部分,针对位移分解程度与特征选取深入程度不够导致滑坡位移预测精度不高的问题,提出一种ICEEMDAN-CNN-SVR滑坡位移组合预测模型:为了解决位移分解程度不够的问题,该模型首先运用ICEEMDAN分解模型对滑坡位移曲线进行分解,将平滑性较好且具有递增趋势的IMF曲线作为趋势项位移,将其他具有波动趋势的IMF曲线总和重构为周期项位移;为了解决特征选取深入程度不够的问题,针对不同位移特性进行了特征变量选取,通过二维平铺与CNN特征提取得到特征变量更深层次的信息,将提取到的特征信息输入SVR预测模型中实现对趋势项位移与周期项位移的精准预测.以典型堆积层滑坡———八字门滑坡为例,选取ZG110与ZG111监测点2007年1月—2012年9月典型变形阶段水平位移数据进行研究,结果表明:ZG110与ZG111监测点预测评价指标R2,ERMSE,EMAE分别为0.9951、0.9989、5.7489、2.7532,4.5091、1.8529,预测效果良好;将模型预测结果与EEMDCNN-SVR预测模型及CNN-SVR预测模型结果作对比,相较其他预测模型,新模型的预测精度有所提升.

关键词：八字门滑坡 ICEEMDAN分解特征提取 CNN-SVR模型对比分析

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Influence of Velocity Shell Correlations on Anomalous Scaling Exponents of Passive Scalars in Shell Models

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Communications in Theoretical Physics 2008年第7期50卷 211-214页

作者： ZHANG Xiao-Qiang WANG guang-Rui CHEN shi-gang Graduate School of China Academy of Engineer Physics P.O. Box 8009（28） Beijing 100088 China Center for Nonlinear Studies Institute of Applied Physics and Computational Mathematics P.O. Box 8009（28） Beijing 100088 China

We propose a new approach to the old-standing problem of the anomaly of the scaling exponents of passive scalars of turbulence. Different to the original problem, the distribution function of the prescribed random velocity field is multi-dimensional normal and delta-correlated in time. Here, our random velocity field is spatially correlative. For comparison, we also give the result obtained by the Gaussian random velocity field without spatial correlation. The anomalous scaling exponents H（p） of passive scalar advected by two kinds of random velocity above are determined for structure function up to p= 15 by numerical simulations of the random shell model with Runge-Kutta methods to solve the stochastic differential equations. We observed that the H（p）＇s obtained by the multi-dimeasional normal distribution random velocity are more anomalous than those obtained by the independent Gaussian random velocity.

关键词： shell models passive scalar distribution function

Stability of GOY Model Under Modulation of Periodic External Force

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Communications in Theoretical Physics 2008年第2期49卷 521-524页

作者： ZHAO Ying-Kui CHEN shi-gang WANG guang-Rui Institute of Applied Physics and Computational Mathematics P.O. Box 8009（14） Beijing 100088 China

There is a phase transition between quasi-periodic state and intermittent chaos in GOY model with a critical value δ0. When we add a modulated periodic externa/force to the system, the phase transition can also be found with a critical value δe. Due to coupling between the force and the intrinsic fluctuation of the velocity on shells in GOY model, the stability of the system has been changed, which results in the variation of the critical value. For proper intensity and period of the force, δe is unequal to δ0. The critical value is a nonlinear function of amplitude of the force, and the fluctuation of the velocity can resonate with the external force for certain period Te.

关键词： chaos GOY model phase transition

Control of Spiral Waves and Spatiotemporal Chaos by Exciting Travel Wave Trains

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Communications in Theoretical Physics 2005年第5X期44卷 858-862页

作者： YUAN Guo-Yong WANG guang-Rui CHEN shi-gang Department of Physics Hebei Normal University Shijiazhuang 050016 China Graduate School of the Chinese Academy of Engineering Physics P.O. Box 2101 Beijing 100088 China Institute of Applied Physics and Computational Mathematics P.O. Box 8009 Beijing 100088 China

Spiral waves and spatiotemporal chaos usually are harmful and need to be suppressed. In this paper, a method is proposed to control them. Travel wave trains can be generated by periodic excitations near left boundary,spiral waves and spatiotemporal chaos can be eliminated by the trains for some certain excitation periods. Obvious resonant behavior can be observed from the relation between the periods of the trains and excitation ones. The method is against noise.

关键词： spatiotemporal chaos spiral waves control