Long Teng-rui , Guo Jing-song , Fang Fang , Cheng Yi-zi
2000, 22(3):1-6. DOI: 10.11835/j.issn.1674-4764.2000.03.001
Abstract:A new bio enzyme catalyser carrier for water treatment was developed successfully by orthogonal test. The optimal ratio of raw materials and production condition for this new carrier have been obtained by this study.
CHENG Zhong-lin , WANG Ai-ying
2000, 22(3):7-11. DOI: 10.11835/j.issn.1674-4764.2000.03.002
Abstract:Green design is a new method of product design. A novel assessment method for green lighting product is provided in this paper, which is developed on the basis of life cycle assessment and the analytic hierarchy process.
2000, 22(3):12. DOI: 10.11835/j.issn.1674-4764.2000.03.003
Abstract:CAD techniques were applied to automated design of packaging paper box such as the performance and selection of box pattern, the structure computation, the art design(including sample design, the box sample unfolding and craft drawing), input and edition of Chinese characters and foreign words, and output of the drawings. A packaging paper box system is developed to automate the packaging paper box design processes.
2000, 22(3):16. DOI: 10.11835/j.issn.1674-4764.2000.03.004
Abstract:This paper based on the relationship between the natural geographic environment of the city and its form, analyses the effect of the Three Gorges reservoir on the city form in this area. The author believes that the round and ribbon form of the city in this area will be broken, and the group and ribbon group and constellation forms will be developed. It is pointed out that this is because of the diversity of natural environment so as "design with considering the nature".
GUO Jing-song , CAI Zeng-ji , WEI Hua-ning
2000, 22(3):21-27. DOI: 10.11835/j.issn.1674-4764.2000.03.005
Abstract:在废水处理流化床反应器中,固液两相流的水力相似性,是动力学模型推导、反应吕放大或缩小的基础。据此在扒求流化床反应器内固液两相流水力相似准数的基础上进行了试验,获得了一组相似参量曲线图:(1)Ar△ρ-Re-E曲线;(2)E-U-Ar△ρ曲线;(3)E-Re-Ar△ρ曲线,并运用这些曲线对实际操作进行了分析讨论。
2000, 22(3):28-30. DOI: 10.11835/j.issn.1674-4764.2000.03.006
Abstract:This paper probes into the way and the character of creation of spatial visual relationship from the factors as follows: specific signs, proper material, light and color and inner displays. A conclusion has been drawn that such relationship with specific spatial meaning must be realized by relative visual stings aroused by specific spatial formative factors.
2000, 22(3):31-34. DOI: 10.11835/j.issn.1674-4764.2000.03.007
Abstract:This paper discusses the accounting management for dial up user in campus computer network. It is important for maintaining the running and development of network and for allocation of the network resources properly. The system provided in this paper is divided into data acquisition and data processing. Its implement is simple and cost effective and it is applicable for the accounting management of a small scale campus network.
FENG Fang-bi , WANG Zheng-yong
2000, 22(3):35-38. DOI: 10.11835/j.issn.1674-4764.2000.03.008
Abstract:深入地分析了变压器效率特性的特点,提出了一种既能保证变压器容量的利用率,又能保证在一定负荷范围内高效运行的变压器容量选择方法.文中以SL 7系列变压器为例,确定出了400~1600kVA容量等级的最佳负荷范围,以供参考.
ZhANG Guo-min , REN Hong , ZHU Xi-sheng
2000, 22(3):39-45. DOI: 10.11835/j.issn.1674-4764.2000.03.009
Abstract:In order to provide a reliable foundation for project decision, some sorts of financial indexes of the project, such as NPV, IRR etc, should be accurately estimated out in the earlier stage. However, these indexes appear in the future randomly, and their estimation in the earlier stage is at risk. In this paper, taking the project's NPV as example and applying simulation method to its estimation, the authors developed a comparatively objective evaluation method of construction projects. Furthermore, the outcome of the simulation method is tested by comparing it with the result of another evaluation method.
2000, 22(3):46. DOI: 10.11835/j.issn.1674-4764.2000.03.010
Abstract:The high humidity makes the indoor air quality sultry. The porous saline materials can function as efficient humidity conditioner. On the basis of analyzing mass exchange process between porous saline materials and air, the computational method of the moisture exchange rate on the porous saline materials surface is established. A number of methods for enhancing the humidity conditioning of porous saline materials are suggested.
2000, 22(3):49-53. DOI: 10.11835/j.issn.1674-4764.2000.03.011
Abstract:This paper firstly introduces a new technology: CORBA by comparing several technologies of Web accessing database, then a few main features were briefly described. On this basis, the CORBA working function was analyzed. At last, an example of successful CORBA based network database was presented.
2000, 22(3):54-59. DOI: 10.11835/j.issn.1674-4764.2000.03.012
Abstract:This paper presents an improved design of the mixing pouring truck introduced from abroad. The improvements on design of bearing assembly of its mixing spindle, connection version of the spindle and lower hollow shaft fixed with mixing blade wheel, structure of bearing support and lubrication of the bearings are described in detail.
2000, 22(3):60-63. DOI: 10.11835/j.issn.1674-4764.2000.03.013
Abstract:In this paper by the probability method the effect of the undefinite indexes and the risk indexes on interior revenue rate(IRR) the main economic evaluation index in bidding and pricing of the use of land, is researched. The risk of the item is appreciated and the basis of bidding and pricing for the use of land is acquired. An example is presented.
2000, 22(3):64-68. DOI: 10.11835/j.issn.1674-4764.2000.03.014
Abstract:In the view of reliability calibration, this paper analyzes the probabilistic sense of the provisions of "Strong Column and Weak Beam' and axial compression ratio in aseismic criteria (GBJ 11 89), which demonstrates that there is much difference between different aseismic ranks of RC frame. The authors suggest that it is possible to make axial compression ratio larger by adjusting the moment capacity ratio between column and beam. Finally, the direction and method of further studies are proposed.
GAO Pei-jun , DENG An-fu , LI Jian
2000, 22(3):69-73. DOI: 10.11835/j.issn.1674-4764.2000.03.015
Abstract:The authors are the first who succeeds in using BP neural networks to forecast the horizontal displacement of cement soil gravity retaining wall. This method is proved to be very useful and important. It has not only the ability to resolve many very complex problems, which cannot be solved by numerical methods, but also accords very well with the spot measurement values.
2000, 22(3):74-76. DOI: 10.11835/j.issn.1674-4764.2000.03.016
Abstract:In this paper, taking the hydraulic mechanism of auto unloading truck as an example, the author discussed mainly how to analyze the movement of mechanism by the optimization method.
2000, 22(3):77. DOI: 10.11835/j.issn.1674-4764.2000.03.017
Abstract:The reason for the difference between supply and demand of houses is that there is a non equilibrium in the interests of purchaser, developer and the government. In order to solve this problem, the developer should cut down the cost, the purchaser should clarify the house value and the government should build up a house property evaluation system to improve the housing market.
2000, 22(3):81-85. DOI: 10.11835/j.issn.1674-4764.2000.03.018
Abstract:This paper introduces some techniques of ground connection. After a discussion on the compatibility of some commonly used ground connection techniques in conformity to the standard, the authors give a further exploration of the impedance in ground connection and the techniques of public ground connection.
LIU Fang , GONG Lan , YAN Zhi-jun
2000, 22(3):86-92. DOI: 10.11835/j.issn.1674-4764.2000.03.019
Abstract:The flow coefficient of the typical doors and windows in different states between opening and closing was tested in a high rise experimental fire tower. It can be used for the prediction calculation of the fire smoke flow and the calculation of the positive air supply as well as for the ventilation. Using the prediction software of the fire smoke flow properties in the building, the effect of the flow coefficient on the fire smoke flow was also studied.
2000, 22(3):96-100. DOI: 10.11835/j.issn.1674-4764.2000.03.021
Abstract:Through the analysis of the present problems existing in inviting bids and entering bids work, this paper suggests that inviting tenders and entering bids should be perfected by perfecting the laws and regulations, management of making the price in project and having a scientific way of appraising and determining the price in project.
2000, 22(3):101-104. DOI: 10.11835/j.issn.1674-4764.2000.03.022
Abstract:After China accedes to the World Trade Organization, the marketing environment for the enterprise of real estate development will change. In accordance with the change and according to basic principles of marketing, the new ideas regarding marketing innovation for the enterprise of real estate development have been put forward in this paper.
2000, 22(3):105-108. DOI: 10.11835/j.issn.1674-4764.2000.03.023
Abstract:The city living environment is an aggregation of various environments such as natural, social and psychological environments etc. They should be embodied in the urban planning.
2000, 22(3):109-112. DOI: 10.11835/j.issn.1674-4764.2000.03.024
Abstract:In this paper, the author used the principle of sound reflection and concept of effective reverberation presented by A.N.Kacherovich to analyze the actual sound field in a church and found out the essential elements which affect the sound energy decay to settle the problem of the reverberation of speech and music by an effective arrangement of some absorbent materials.
LI He-ping , ZHENG Ze-geng , ZHU Zhu , ZHENG Huai-li
2000, 22(3):113-117124. DOI: 10.11835/j.issn.1674-4764.2000.03.025
Abstract:The production and culture conditions of microbial flocculant are summarized in this paper. The reaction conditions and the mechanisms for flocculation in wastewater are also discussed. Moreover, the direction for further research are pointed out.
2000, 22(3):118-121. DOI: 10.11835/j.issn.1674-4764.2000.03.026
Abstract:Making use of the software Excel, this paper deduced regressive equations between density and pressure and between density and temperature of saturated vapor, at the same time, a new method of regressive interpolation, which is simple and much easy, was suggested.
2000, 22(3):122-124. DOI: 10.11835/j.issn.1674-4764.2000.03.027
Abstract:With the development of skyscrapers, the normal measurements cannot fulfil the requirements of standards. This paper introduces the principles of global position system, and some questions about how to use this high tech in skyscraper construction were discussed.
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