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Excited response of granular ores in vibrating field

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Journal of central South University of Technology 2001年第2期8卷 120-124页

作者： LI Jian hua 1,2., SUN Ye zhi 1, WU Ai xiang 1, cHEN Shou ru 1 (1.college of Resources, Environment and civil Engineering, central South University, changsha 410083, china 2.the 5th building company in guangdong province,{12., c 1. college of Resources Environment and Civil Engineering Central South University 410083 Changsha China 2. the 5th {2. company in guangdong province 512026 Shaoguan China

the dynamical theory was utilized to probe into the law of the excited response of granular ores generated by the exciting action of exciter and the influence of wave propagation in vibrating field. the exciter with double axes was presented as an example, and the principle of exciter and its mathematical expression of the excitation force were given. the granular ores have viscidity and damping speciality, on the basis of which the motion equation of excited response of ores was established and the approximate expression of mode displacement by harmonic excitation and the steady effect solution of coordinate response were deduced. Utilizing the step by step integration method, the recursion relation matrix of displacement, velocity and acceleration of the excited response of ores were obtained, and the computational flow chart and a computational example were given. the results show that the excited response can change the dynamical character and the flowing characteristic of granular ores.

关键词： excitation system excited response granular ore step by step integration method

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某大厦停建裸露钢筋防锈蚀处理

韶关学院学报 2003年第6期24卷 44-47页

作者：黄翔广东省第五建筑工程公司广东韶关512026

停建工程裸露钢筋防锈蚀问题关系到续建时质量 ,为此分析了钢筋锈蚀原因、影响因素及锈蚀后可能造成的危害性 ,探讨了某大厦停工裸露钢筋的防锈蚀施工措施 .

关键词：停建工程钢筋锈蚀防锈措施

construction of Five 3D cadmium Metal-Organic Frameworks by Imidazole-4,5-Dicarboxylates and 4,4′-Bipyridyl building Blocks

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Construction of Five 3D Cadmium Metal-Organic Frameworks by ...

中国化学会第五届全国结构化学学术会议

作者： Wen-Guan Lu~(1,2. Long Jiang~1 Tong-Bu Lu~(1,*) 1 School of chemistry and chemical Engineering,Sun Yat-Sen University,5102.5,Guangzhou,{2. 2.Department of chemistry,shaoguan University,512.05,shaoguan,{2.

＜正＞In the past decade,research in the area of Metal-Organic Frameworks（MOFs）exhibiting open structures{2.ontinues to be interesting due to their many applications,both actual as well as potential,Of the many MOFs investigated,those{2.ontaining benzenecarboxylates{2.onstitute an important family,that give rise to fascinating{2.rystal ***,the scope of the

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我国有尾动物分类中几个问题的研究

四川动物 2001年第4期20卷 177-180页

作者：徐剑韶关大学生物系广东韶关512005

本文对有尾两栖类小鲵科Hynobiidae山溪鲵属、巴鲵属、小鲵属分类研究中的同物异名 ,以及属称的订正方面进行了进一步探讨 ,认为我国山溪鲵属应为 5种 ,无唇褶山溪鲵B cochranae应为北方山溪鲵Batrachuperusti betanus同物异名。巴鲵属... 详细信息

本文对有尾两栖类小鲵科Hynobiidae山溪鲵属、巴鲵属、小鲵属分类研究中的同物异名 ,以及属称的订正方面进行了进一步探讨 ,认为我国山溪鲵属应为 5种 ,无唇褶山溪鲵B cochranae应为北方山溪鲵Batrachuperusti betanus同物异名。巴鲵属是一个有效属称 ,义乌小鲵Hynobiusyiwuensis应为中国小鲵H chinensis的同物异名 ,黄斑拟小鲵Pseudohynobiusflavomaculatus可以暂定为秦巴北鲵Ranodontsinoaensis的同物异名。

关键词：山溪鲵属巴鲵属小鲵属分类研究有尾两栖动物

the Finite Element Analysis of a three-story Light Wood-framed {2.

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The Finite Element Analysis of a Three-story Light Wood-fram...

Study on the near-field ground motion of Fukuoka earthquake by the method of computing Green’s functions for a layered half-space

2.11 International conference on Business Management and Electronic Information(BMEI 2.11)

作者： ZHOU Nannan 1,2.1.Dept.of building Engineering,Tongji University,Shanghai,china 2.Shandong construction Development Research Institute,Jinan,Shandong {2.,china HE,Minjuan Dept.of building Engineering Tongji University Shanghai,china

the model and nonlinear dynamic time-history analysis of a three-story light wood frame {2. have completed with finite element analysis software—ABAQUS in this *** the model of the whole structure,shear wall was reduced to equivalent truss model which consisted of rigid beam element and nonlinear spring element *** and roof diaphragms were assumed to be *** results show that model established with this method was reasonable,and has certain *** to the results of time-history analysis of frequently,basically and rarely earthquake of fortification intensity 8 and referring to relevant provisions of code for seismic design of {2.s,this paper gave the advisable values of elastic and elasto-plastic story drift rotation of light wood-framed house.

关键词： light wood-framed house finite element model timehistory anlysis story drift rotation

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Study on the near-field ground motion of Fukuoka earthquake ...

韶关地区人群ABO、Rh、MN、P及Jk^(a-b-)血型分布

the 4th International{2.onference on Environmental and Engineering Geophysics

作者： Di Wu~(1,2.3),Qifeng Luo~2.Yan Xiong~3,Ping Tan~1 1.Key Laboratory of Earthquake Engineering and Applied Technique of guangdong {2. Guangzhou University Guangzhou 510405 china 2.Research Institute of Structure Engineer and Disaster Reduction,Tongji University,Shanghai 2.0092. china 3.State Key Laboratory of Subtropical building Science South china University of Tech,Guangzhou 510640, china

＜正＞the slip distributions on the fault,the source rupture process and the other seismic parameters of Fukuoka earthquake determined by Japan researchers are accepted in this *** station Genkai is chosen as a site to analyze the Fukuoka Earthquake wave in near field by using the Green’s function method for a layered half-space.A comparative study of the acceleration time history of the calculated results and records are carried *** waveforms of the calculated results are in good agreement with those of the observed records at the station Genkai,and the peak values in the calculated results are close to that of the *** Fourier spectra of the calculated acceleration time history are basically identical with those of the records while the frequency is below *** useful conclusions are drawn that the near-field ground motion of Fukuoka earthquake can be effectively estimated by the method of computing Green’s functions for a layered half-space in the condition of the uniform geologic *** seismic parameters of Fukuoka earthquake are helpful to study the near-field and far-field ground motions and the influence on eastern china including Shanghai.

关键词： Fukuoka earthquake Green’s function near-field ground motions

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中国生物制品学杂志 2008年第6期21卷 524-526页

作者：罗洪清元霞刘凯波汤永毅郑静敏韶关市中心血站广东韶关512026

目的了解韶关地区人群的ABO、Rh、MN、P及Jk(a-b-)血型的分布规律,为献血者招募及科学合理储存血液提供理论依据。方法采用U型96孔微量板法,对献血者血样进行ABO正反定型及Rh、MN、P血型检测,结果可疑者用试管法确认,并进行Jk(a-b-)表... 详细信息

目的了解韶关地区人群的ABO、Rh、MN、P及Jk(a-b-)血型的分布规律,为献血者招募及科学合理储存血液提供理论依据。方法采用U型96孔微量板法,对献血者血样进行ABO正反定型及Rh、MN、P血型检测,结果可疑者用试管法确认,并进行Jk(a-b-)表型筛查。结果ABO血型基因频率r>p>q,表型分布规律为O>A>B>AB;Rh(D)阴性占0.16%;A2.型在AB型的检出率高于A型;MN血型的基因频率m>n,表型分布规律为MN>M>N;P血型的基因频率p2.p1,表型分布特征为P2.P1;Jk(a-b-)表型检出率为1∶2.161.5。结论韶关地区血型分布以O型所占比例最多,且A型多于B型,A2.型检出率高,Rh(D)阴性率低,Jk(a-b-)表型更低;应加大O型、A型献血者的招募并相应增加其库存量,特别是要加强Rh(D)阴性和Jk(a-b-)表型献血者的档案管理、Rh(D)阴性血液和Jk(a-b-)血液的冰冻保存工作及Jk(a-b-)人员的自身储血工作。

关键词：血型分布输血

theoretical Analysis of Annular Elliptic Finned Tube Evaporative condenser Based on Field Measurement

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Journal of thermal Science 2020年第5期29卷 1355-1369页

作者： GU Yaxiu WANG Junwei WANG Xinru Ll Mohua PAN Song LIU guangdong WANG Wentao GING Zexiang Department of building Environment and Energy Engineering School of Civil EngineeringChang'an UniversityXi'an 710061China Research centre for Fluid and thermal Engineering Department of Architectural and Built EnvironmentUniversity of Nottingham Ningbo ChinaNingbo 315100China college of Architecture and civil Engineering Beijing University of TechnologyBeijing 100124China

In this article,a new evaporative condenser with an annular elliptic firmed tube heat exchanger that includes a round inner tube and elliptic outer finned tube was designed and *** refrigerant flows between the round inner tube and the elliptic outer tube,and it simultaneously exchanges heat with the cooling water in the inner tube,the spray water,and the cooling air flowing past the outer *** field measurement for the traditional round finned tube evaporative condenser in the Futong Metro Station of Line 14 in Beijing,china,the theoretical heat transfer performance of the annular elliptic finned tube evaporative condenser was analyzed and *** with a round finned tube heat exchanger,the heat exchange capacity of the annular elliptic finned tube increased by 2.34%to 9.2.%;the total heat transfer coefficient increased by 47.42.,and the power consumption of the fan in the air-conditioning system with an annular elliptic finned tube heat exchanger decreased by 11.18%to 14.65%.therefore,the energy-saving performance and the heat transfer performance of the new annular elliptic finned tube heat exchanger were enhanced compared to the round finned tube heat exchanger.

关键词： evaporative condenser finned tube heat exchanger annular elliptic tube heat transfer enhancement air-conditioning system metro station

11caO·7Al_2._3·caF_2.水化及水化动力学过程研究

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武汉理工大学学报 2002年第8期24卷 23-27页

作者：赵三银余其俊广东省韶关学院华南理工大学

研究了不同温度下水泥熟料矿物氟铝酸钙 11ca O· 7Al2.O3· ca F2.的水化及其水化动力学过程。研究表明 ,11ca O· 7Al2.O3· ca F2.的水化产物及其水化程度随水化温度范围的不同而变化。当水化温度低于 30℃时 ,水化温度提高 ,11ca O... 详细信息

研究了不同温度下水泥熟料矿物氟铝酸钙 11ca O· 7Al2.O3· ca F2.的水化及其水化动力学过程。研究表明 ,11ca O· 7Al2.O3· ca F2.的水化产物及其水化程度随水化温度范围的不同而变化。当水化温度低于 30℃时 ,水化温度提高 ,11ca O· 7Al2.O3· ca F2.的早期水化程度显著提高 ;30℃以后水化温度的影响不大。在 15～ 6 0℃范围内 ,11ca O·7Al2.O3· ca F2.的水化反应在进行 0 .5 h后便进入受扩散控制阶段 ,其水化程度 α与水化时间 t的关系符合 Kondo R等提出的水化动力学方程 :[1- (1-α) 1 /3]N=K t。此外 ,制备了可用于对铝酸盐水泥水化产物进行 QXDA分析时作标准物质的纯 c2.AH8和 c3AH6 。

关键词： 11caO·7Al2.3·caF2 氟铝酸钙水化水化动力学水泥