WANG Yuan-qing , LI Xuan , BAI Yin , SHI Yong-jiu , DAI Hai-jin , LU Dao-hui
2008, 25(2):1-5.
Abstract:The steel structure of large-scale electric dust precipitator applies the combination structural system of spatial bars and shells,which has various bar and complex bearing states.It is not appropriate for the traditional calculation method to precisely evaluate the bearing capacity of the structural system,so a further nonlinear analysis is needed,and the structural system and member section need to be optimized.A finite element model of the vertical beam(only under moment,under both larger axial force and moment) of steel shell structure is established for a large-scale electric dust precipitator with finite element software ANSYS.The static analysis of the integral structure,eigen buckling analysis and ultimate strength analysis are proceeded.Based on the results of the analysis,this paper proposes an optimized program for the vertical beam only under moment.The calculation results show that the two types of beam model are designed to meet the loading capacity requirements.
HE Jin-yun , JIA Qing , LI Qing-yang
2008, 25(2):6-8.
Abstract:The concrete,which contains slag from Handan instead for sand in concrete partially,was compared with normal concrete by using the orthogonal design method.The tests indicate that slag concrete's compression strength of 7days and 28 days are very closed to normal concrete,and steel slag is more important than other factors such as water-binder ratio,slag content and cement content for concrete workability.
2008, 25(2):9-12.
Abstract:The fatigue failure experimental study on the steel fiber with different content was carried out by using the TAW-2000 Multi-function material experiments machine.The results showed that the tired extreme limit anti-presses strength increased linearly along with the content of steel-fiber.The ability of resist fatigue increased along with the content of steel-fiber.The rising segment of the curve is more steep and the downing slower along with the time.The strength and temper of steel-fiber reinforced concrete be enhanced.
SONG Zhi-bin , HUANG Ming-jun , MA Jian-jun
2008, 25(2):13-16.
Abstract:The proportion of pervious concrete bricks is designed by using orthogonal method.The effect of a series factors(the aggregate-diameter,water-cement ratio,aggregate-cement ratio)and different proportional levels to the indexes are analyzed by taking concrete strength,water pervious coefficient,percentage of interconnection voids as indexes.It is proved that favorable agreement is found between analyzing result and experiment finding,so orthogonal design can provide the directions and methods to concrete mix proportion.The experiment has discovered the most superior allocated proportion under the controlled condition.
ZHENG Jian-hu , WU Xiong-bin , WEN Zi-juan
2008, 25(2):17-20.
Abstract:Freeway is a key component of urban transportation system.With the rapid growth of traffic volume,traffic congestion occurs frequently.Ramp metering is one of the most effective measures to combat traffic congestion on urban freeway.The fundamental function of ramp metering of urban freeway is expounded,and the key factors which determine the metering rate are pointed out.The impacts of ramp metering on freeway,surface road and traffic corridor are analyzed completely.Meanwhile,corresponding control strategies are put forward.
2008, 25(2):21-24.
Abstract:There is a trend that put the natural element into the urban space.Ecological plaza is a comfortable green space;it was built for people's free time activities.The attribute of ecological plaza represents the spirit of ecology which is emphasizing the interaction and keeping and maintaining the harmonious relationship between people and nature.Besides that,the design of the Plaza also suggests the concept of sustainable development and improves the quality of residing,working,studying,entertaining and so on.The experience of this case could be used in many constructions of other communities.This article tries to find something from the direct feeling of people basing on the qualitative research method,
ZHANG Ming-jie , WANG Jing-gang , BAO Ling-ling
2008, 25(2):25-28.
Abstract:This paper introduces the development GSHP in China for the purpose of Environmental protection and scientific distribution of energy.Applications of ground-source heat pump are summed by taking the typical project as the examples.Policies of heat pump application in some foreign countries are introduced in order to guarantee a healthy and rapid development for ground source heat pump in China.It gives suggestions on how to promote the development of heat pump in China on the basis of referring heat pump application in several foreign countries.
BAI Feng-qing , JIANG Qin-ming , DING Yu-rui , LI Chong , HAN Xiang-feng , WANG Hua
2008, 25(2):29-31.
Abstract:The test on treating multiple pollution water of Handan has been continuing for a long-term by using the composite constructed wetland system,in which the aquatic plants with stain resistance are selected.The results show that the constructed wetland has a purifying effect perennial,the removal rate of BOD,TN and TP are 25~65%,27-84% and 30-80%,respectly.The removal effect and stability of subsurface flow wetland is better than surface constructed wetland's.The influence factors of removal effect are temperature,plant growth conditions and matrix,and the changing of temperature is the main factor.
GAO Yan-bing , ZHANG Wei-jie , XU Mao-cheng
2008, 25(2):32-35.
Abstract:The viewpoint of condenser heat recovery and reuse is proposed by according to the technical characteristics of household air-conditioning system.The heat recovery system can be widely used for domestic hot water supply.A household air conditioner with domestic hot water supply(HACDHWS) system is set up in our laboratory.The HACDHWS system can work in air cooling operation mode and in circulating water cooling operation mode.Experimental data are shown.Corresponding analysis and comparisons of the operational characteristics between the two modes are given in this paper.Some main parameters results are presented and the impacts of variation in water temperature on the HACDHWS system performances are discussed in this paper.The result shows that the original performances of the household air-conditioning system is not obvious affected and the EERC+w of the HACDHWS system is improved as long as the temperature of domestic hot water supply in water tank for storing heat is properly controlled.
2008, 25(2):36-39.
Abstract:Various modes of operational regulation in district heating simply were introduced.Relevant parameter models were educed aiming at 3 typical regulation modes.The concrete values of parameter models in operational regulation mode were calculated by taking a district heating project as example.Finally,some simple economic analyses for various regulation modes were carried out.According to these discussions,it was pointed out the difference between the regulation by changing temperature and by changing flux in district heating.The energy is supplied indirectly by district boiler;the regulation by change flux was proposed for the regulation by changing temperature and flux contemporary.
SONG Hong-li , ZHANG Xiao-nan , ZHOU Jun-jie , LIU Hai-xin
2008, 25(2):40-43.
Abstract:The wetland study in Huanghua was studied by using Geographic Information Systems(GIS) technology and Remote Sensing(RS).The change of wetland landscape was forecasted by utilizing Markovian models,the Convertion Marix and the Dynamics Rate.The result indicates that the wetland of the Huanghua reduced and the artificial wetland increased notably,the recession of wetland is continuing.
MENG Ying , ZHANG Zi-ping , REN Xiao-fen , LIU Yuan
2008, 25(2):44-47.
Abstract:Some important influent factors of radiant cooling system,which includes the mean radiant temperature,the surface temperature,the temperature of supply water,the design temperature of indoor,the outdoor temperature and the material of wall and the radiant material,were analyzed by combining experiment tests with physical models.The relationships of all factors were analyzed.The relation equations of some influent factors were gotten by analyzing diffidence between the predictive value and the test value.
2008, 25(2):48-51.
Abstract:The paper has researched the influences that crystal conditions of acid eduction from sea-island fiber wastewater have on the quality of recovered TA. The orthogonal test and analysis of variance show that the temperature of the wastewater,the concentration of the acid added,the mixing speed of acid-adding, and the speed of acid-adding,have effects on the results of the experiments when acid is precipitating.This research also probes into the mechanism of crystal in acid eduction through the system mensuration and analyses of the main performances of recovered TA.The paper has also researched some experiments of acid eduction of two kinds of wastewater with different concentration,and surveyed the influence that the changing of the wastewater quality has on the experiments of acid eduction.
HUANG Guang-qiu , ZHANG Gan-tao
2008, 25(2):52-54.
Abstract:The paper analyzes the localization of the negation detection approach.A dynamic and auto-adapted filter system is established in view of the question of the network intrusion detecting efficiency.The generation and detecting efficiency of detection are ensured by the specificity of the positive selection algorithm that can discern self;the algorithm uses the dynamic clone selection algorithm as the frame,the positive selection algorithm as the core and data mining technique.
ZHU Tian-jun , ZHENG Hong-yan , HOU Hong-juan
2008, 25(2):55-57.
Abstract:The research sets up a heavy tractor semi-trailer dynamic model and puts forward an active roll control algorithm based on optimal control for the vehicle roll stability control.It also establishes LQG controller in various speeds and simulates roll stability of the vehicle with steering step input.The simulation results show that the active roll control algorithm is very effective in the active roll control for the vehicle.
DING Shu-li , WANG Ming-zhen , SONG Hei , XU Bo-hui
2008, 25(2):58-61.
Abstract:Using potassium acetate as intercalation reagent,the kaolinite-potassium acetate complex was prepared.The basal spacing of raw kaolinite enlarged from 0.714nm to 1.42nm and its intercalation ratio was about 80%.The power ultrasonic peeling test was taken with instability of kaolinite-potassium acetate complex.The effects of surry volume,surry concentration and processing time on peeling were discussed under certain power ultrasonic circumstance.It is shows that the best peeling result was got in 200 mL surry volume,10% surry concentration and 15 min processing time under the power ultrasonic condition of 150W,18kHz and with 100 mm end diameter of horn.That the fluid shock wave and the enormous particle acceleration generated by acoustic cavitation is a fundamental cause for peeling of kaolinite-potassium acetate complex.Also,high velocity impact among kaolinite particles in fluid makes much more fine power.
DU Wen-tang , YANG Hui-shuang , JIA Xiang-xin
2008, 25(2):62-64.
Abstract:The "JC" method reliability is used to evaluate the steadiness of impervious base reasonably.Limit state equations for reliability of impervious base are given after analyzing randomness of hydraulic pressure,depth of destructive bed and coefficient of water inrush.This paper calculates reliability index, lose efficacy probability and coefficient of water inrush corresponding to the thickness of different impervious base.The lose efficacy probability of the impervious base ranges suitably in 1.5×10-3~3.0×10-3 by contrast with other accidents.
HOU Wei , BIAN Long-jiang , HAO Bin-bin , JIANG Qin-ming
2008, 25(2):65-68.
Abstract:Impact pressure is a kind of disparity phenomenon in mine pressure,also a kind of complex dynamic phenomenon,It strictness threat safety production under mine and it is one of the graveness disaster during the course of exploitation.With the increase of mine depth,Impact pressure graveness disaster will become more graveness,and some mines occur burst.The theory analyzes the condition and influence of impact pressure,moreover proffer the forecast technology and preventive measures.
DING Mei-hua , WANG Ning , HE Hu-jun , XIE Jia-kun , FANG Jie
2008, 25(2):69-71.
Abstract:Velocity analysis is a very important step in seismic data processing. Its quality influences the moveout and static correction and further on the stack imaging and migration.This article discusses velocity analysis methods in different processing software(take PROMAX、FOCUS、CGG software as example),and compares their advantage and disadvantage,which help us to process different quality seismic data.
GUO Yong-cheng , LIU Hui , HE Chun-gui , ZHANG An-bing
2008, 25(2):72-75.
Abstract:The GPS technology has many advantages such as round-the-clock,roboticized,liberty in selecting points,and capable of providing three-dimensional coordinates,so it provides a new and effective data collection method for landslide monitoring.The author mainly research the method of GPS technology used in landslide monitoring and give the all process according to researching landslide monitoring of Kaziwan landslide in Sanxia area,including technology design of monitoring network,field survey,data processing and deformation analysis.The results indicated that GPS static positioning technology reached the precision of mini-meter and fully meet the requirements of high-precision deformation monitoring.
LIU Hai-xin , SHI Cui-mei , ZHANG An-bing , ZHANG Xiao-nan , LIU Hui
2008, 25(2):76-78.
Abstract:The urban public transport inquiry system of Handan which is convenient for user and can lap vector maps through integration without sew with popular programmer using GIS was designed for the user's requirement of arriving at destination with the shortest time.The system is achieved by adopting MS Access2003,Geographical Information System software SuperMap Objects 5.0 combined with relevant program languages.It discusses the design of the system's construction, flow and function.It offers effective support for the trip of the citizen.
YANG Da-bing , CHANG Guang-wei , LIU Gang , LI Shi-gang , FU Jia , LIU Hui
2008, 25(2):79-81.
Abstract:Full-mechanized caving faces W902 of the Dalong Mine about return airway corner mining and the return airway side of the disposable extending surface were analyzed;Optimized plan was proposed to solve the question to enhance the coal returns-ratio.The plan eradicated the former difficult problem about the return airway of full-mechanized caving faces.The results provided the model experience for new craft mining and new technological design for the irregular working surface.
CAO Qing-kui , YU Bing , YAN Jun-hua
2008, 25(2):82-86.
Abstract:This article has structured the stock cost models of retail dealer and supplier under the time-variable demand.It pointed that the lacking goods time-points of retail dealer not only affected itself also did affect the cost achievements of supplier and the supply chain.It has optimized the lacking goods time-points of retail dealer form the overall angle based on the partial optimization of the retail dealer lacking goods time-points and the supplier satisfied batch of ordering goods.At last,it structured a coordinated mechanism,called cost sharing,to guarantee the optimized situation.
2008, 25(2):87-90.
Abstract:A novel chiral oligomeric Salen ligand was synthesized by the reaction of a novel dialdehyde with(1R,2R)-1,2-diaminocyclohexane.From this ligand,the chiral oligomeric Salen-Mn(III) complex was prepared.The new ligand and complex were characterized by FT-IR and UV-Vis spectroscopy.The complex was used as the catalyst for the asymmetric epoxidation of olefins using NaCl and m-CPBA as the oxidants,respectively.In the asymmetric epoxidation of cis-β-methylstyrene,the selectivity and ee for the epoxides reached 98% and 80%,respectively.The catalyst can be reused for three times.
ZHANG Guang-qing , LI Gang , HE Yan-gang , YU Xue-qing
2008, 25(2):91-94.
Abstract:Copolymerization of Maleie Anhydride(MA) with sodium acrylate(AANa) initiated by plasma in aqueous solution was studied.MA-co-AANa was obtained and proved by IR.The experimental conditions were optimized,i.e.,discharge time was 70 s,discharge power was 80 W,post-polymerization time was 1 h,monomer ratio m(MA) : m(AANa) = 30:70 and post-polymerization temperature was 90℃.The conversion of monomer could reach to 32% and the sequestration of MA-co-AANa could reach 340 mg CaCO3/g under these conditions.
WANG Jian , SHI Yu , SU An-ying , CHAI Xi-qing , MEN Jin-e , ZHENG Hai-ping , ZHANG Xiang-yang , TIAN Ke
2008, 25(2):95-97.
Abstract:The cord blood mononuclear cells(CBMNCs) were separated by density gradient centrifugation and cultured in presence of relevant cytokines(rhGM-CSF,rhIL-4 and rhTNF-α)to generate DCs in order to explore the killing effect of CTL induced by human cord blood dendritic cells(DCs) loaded with mild acid-eluted peptides of esophageal carcinoma cells on cytotoxicity of T lymphocyte.The specific CTLs were induced by DCs loaded with mild acid-eluted peptides of esophageal carcinoma cell line T.Tn.The killing effect of CTLs on T.Tn.target cells was identified by CytoTox96 assay in vitro.The CTLs induced by DCs loaded with antigen peptides exhibit significant killing activity to T.Tn cells before mild acid-eluted(78.5±9.5)% compared to the cells after mild acid-eluted(P<0.05).It is higher than Hep2 cell line and the controls(P<0.05).The specific killing activity of CTLs stimulated by cord blood DCs loaded with antigen peptides can be induced.It provides a potent method to the immunotherapy of esophageal carcinoma.
2008, 25(2):98-100.
Abstract:In this paper,the existence of positive solutions to the following first-order singular periodic boundary value problem is proved by using Green Function and Fixed Point Theorem in cones for problem,u′(t)+ρ2u(t)=f(t,u(t)),0≤t≤2πu(0)=u(2π) where f(t,u) may appear singularity at u=0.
2008, 25(2):101-103.
Abstract:Answer extracting is central to question answer system.Chinese question answer system based on the model of the conceptual matching degree was put forward by using the ontological approach and using for reference from the concept lattice.This model can extract satisfied answer by calculating matching degree.The model adopts quantitative calculation and reduces the problem——answer matching time.
2008, 25(2):104-106.
Abstract:The determination of frequency equation,discriminant of repeated root existence and solution of its roots without repeated one are discussed for free vibration of Multi-Degree-of-Freedom linear systems.A numerical method of finding its natural frequencies and mode is given basing above.
ZHAO Xue-ting , LIU Hong-fang , SHI Cui-mei , ZHAO Xiao-fen
2008, 25(2):107-109.
Abstract:Toughness and binding number are two important parameters in graph theory.In this paper,we study the relationship between parameters and factors,fractional factors of graphs.We prove a sufficient condition for the existence of fractional factors in graphs;we also explore the structure of subgraphs and give the relationship of the toughness of any branch of the graphs and their own.
LU Rui-hua , WANG Xiao-sheng , CHEN Shuang , YANG Yang
2008, 25(2):110-112.
Abstract:Some results of the strong law of large numbers under negative association are obtained by using a maximal inequality.As corollaries,some results are the particular cases of the result in this paper.