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   Science & Technology Review
2005, Vol.23, No. 0503
10 March 2005


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Science & Technology Review. 2005, 23 (0503): 1-1. ;  doi:
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Abstract ( 341 )

Science & Technology Review. 2005, 23 (0503): 40-40. ;  doi:
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Abstract ( 295 )
生态健康研究专题

THE SCIENTIFIC CONNOTATION OF ECOHEALTH AND ITS SYSTEM APPROACH

Science & Technology Review. 2005, 23 (0503): 4-7. ;  doi:
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Abstract ( 481 )
On the basis of the complex ecosystem and human health theory, the scientific connotation and the system contexts of ecohealth were illustrated. Three levels of ecohealth research were investigated: individual physiological and psychological health, community health in human physical, biological and metabolism environment (including clothes, diet, residence, transport, recreation, work and communication, etc. ), the industrial and regional ecological service function (including water, soil, air, living organism, mineral flows and watershed, region, landscape, etc. ). A system approach for health regulation was discussed with some hot issues, study focus, significant progress, and some viewpoints of building in eco-health development were put forward.

SOCIETY, DEVELOPMENT AND ECOLOGIC HEALTH

Science & Technology Review. 2005, 23 (0503): 8-11. ;  doi:
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Abstract ( 481 )
The eco-health is a new concept put forward along with the social and economic development. After analyzing the natural environment, artificial environment and social environment, great challenges faced with human being's existence environment were suggested, and under the guidance of the scientific viewpoint of development the ecologic relations between human being and environment should be recognized, experienced and coordinated so as to realize the coordination and sustainable development of the whole society.

URBAN ECOLOGY AND ECOLOGICAL HEALTH

Science & Technology Review. 2005, 23 (0503): 12-15. ;  doi:
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Abstract ( 1320 )
A health ecosystem has not only an ability to maintain its organization, vigor, and self-renewal over time, but also an ability to meet the people's suitable needs, and provides the ecosystem supportive services for human beings. The Urban ecological health is a concept encompassing the health of the complex biotic community of people, plant and animal life within the urban ecosystem, including the health of urban ecosystem consisting of the builting and physical environment and the social, economic, cultural and political environments. In this paper, such four aspects as the building ecological health, the ecological health in the congested condition, traffic ecological health and metabolizable ecological health were analyzed in detailed in order to boost the progress of the research in the fields on urban ecology and ecological health.

ECOLOGICAL SERVICES OF URBAN SOILS IN RELATION TO URBAN ECOSYSTEM AND ENVIRONMENTAL QUALITY

Science & Technology Review. 2005, 23 (0503): 16-19. ;  doi:
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Abstract ( 530 )
Urbanization represents a dramatic change of land use or land cover. The service and function of soils undergo a fast change during urbanization, i.e., from that of sustaining plant growth to that of buffering, transforming and purifying pollutants. Urban soils thus are playing an important role in making a complete urban ecosystem and in protecting urban environment. Quality of urban soil changes with the transformation of soil functions, which include physical, chemical and biological aspects. Urban soils often get degraded due to the impact of heavy human activities. Physically speaking, soil degradation occurs mainly when soils are artificially compacted, which increases soil bulk density and lowers water infiltration rate, thus an increased surface runoff coefficient and a higher load of non-point source pollution to urban water system. Chemically, urban soils are often contaminated by organic and inorganic pollutants, which increase the accessibility of toxic substances to biolog...更多ical (including human) health and, meanwhile saturate the carrying capacity of soils and increase the mobility thus release risk of pollutants contained in soils. The loop of element translocation in urban ecosystem causes inevitably accumulation of nutrients and pollutants in urban soils, therefore urban soils are becoming a geochemical barrier of various elements. It is called to close the loop by a better management of urban soils in order to facilitate a healthy urban ecosystem.

SPECIAL ECOSYSTEM SHOULDN'T BE NEGLECTED IN THE REGIONAL DEVELOPMENT——NATURAL FOCUS AND DISEASE OF NATURAL FOCUS

Science & Technology Review. 2005, 23 (0503): 20-23. ;  doi:
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Abstract ( 476 )
While an overall consideration to the regional development is given, close attention to a special ecosystem, i.e., nature focus and disease of nature focus, should be paid. The special ecosystem is formed by some pathogen, host and vectors, which may be latent in the different natural landscape. In order to guarantee the sustainable development of the regions and successful cooperation of the regional development, a further investigation and research on the special ecosystem should be made.
基础科学

CHAOS INTERPRETED WITH INSTANTANEOUS CHAOMETRY

Science & Technology Review. 2005, 23 (0503): 24-27. ;  doi:
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Abstract ( 486 )
While the Logistic model was studied with instantaneous chaometry,it is found that instantaneous chaometry can powerfully exhibit the characteristic of chaos. Though the instantaneous chaometry is a stochastic process and has a little randomicity, value r of Logistic model can be shown with it. The new concept of n-step chaometry was defined, which can be easily calculated, and not involved in mean square integral. While instantaneous chaometry was applied to Henon map, the window systems based on 21 were found, chaos and periodic windows appear by turns in a narrow interval, and in which there are period doubling bifurcation based on 189 and 252.
高技术

A STUDY ON ACTIVE KNOWLEDGE BASE SYSTEM APPLIED IN IDS

Science & Technology Review. 2005, 23 (0503): 28-31. ;  doi:
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Abstract ( 489 )
Based on the study to the Active Knowledge Base System(AKBS), the paper applies AKBS in the IDS. With some active functions of AKBS, it can improve the detection efficiency of IDS. When the ECA rules are applied to IDS, and the dynamics characteristic and static characteristics of the system are analyzed, the capability of IDS can be greatly improved.

INVESTIGATION OF HIGH PROPERTIES FIRE-RESISTANT AND WEATHERING CONSTRUCTION STEEL WGJ510C2 AND ITS TYPICAL USE

Science & Technology Review. 2005, 23 (0503): 31-37. ;  doi:
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Abstract ( 505 )
The mechanical performance, weldability, fire-resistant, weathering performance and usage of high properties fire-resistant and weathering construction steel developed in Wuhan Steel were evaluated in this paper. It shows that this steel has fine integrated mechanical performance and that the yield strength of the steel at 600℃ is more than 2/3 of the yield strength at room temperature, which is suitable for the fire-resistant safety of constructions. The steel has low cold-cracking sensitivity and can bear high heat input (50~100kJ/cm). The endurance of naked WGJ510C2 is about 44% higher than that of Q235. Considering the fire protection standard Grade One in construction, WGJ510C2 can save 36.5%~50% thin protection coat and 26% thick protection coat, compared with Q235. The result from comparing different steel samples in cyclic corrosion test (CCT) in room and exposed experiment outside (Wuhan, ten months) shows that corrosion speed of new steel (WGJ510C2) is obviously slower than t...更多hat of traditional construction steel such as Q235 and Q345. The practical use in huge constructions is excellent

A NEW METHOD OF DRILLING OIL AND GAS WELLS——LASER DRILLING

Science & Technology Review. 2005, 23 (0503): 37-40. ;  doi:
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Abstract ( 541 )
The history of the laser drilling was briefly reviewd. And, the present state of the experimental researches in the developed countries, including the mechanism of the laser energy, the factors that affect the drilling efficiency, the change of the rock properties and the mumerical model for the laser drilling was summarized. Based on analyzing the advantages and disadvantages of this drilling method, the direction of the further research and its prospects for the research on the laser drilling in China were put forward.
资源与环境

CLIMATE CHANGE AND SEA LEVEL RISE AND THEIR IMPACTS ON THE DAMAGE OF TSUNAM

Science & Technology Review. 2005, 23 (0503): 41-44. ;  doi:
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Abstract ( 566 )
The facts of climate change during the 20 century over the globe and in China were summarized, and the possible change in surface temperature in the 21 century was predicted. The current situation and future change in sea level and coastal ecosystem due to anthropogenic climate change were analyzed. Furthermore, the possible impacts of climate change and sea level rise on the damage of tsunami are emphasized. Finally, the combat strategies to reduce the damage of tsunami were suggested.
医学

INFECTOMICS IN THE EXPLOITATION OF NEW ANTIINFECTIVE AGENTS

Science & Technology Review. 2005, 23 (0503): 44-48. ;  doi:
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Abstract ( 518 )
The generation of new anti-infective agents has emerged as an urgent issue in modern medicine. The availability of genome sequences, and the development of various high-throughput techniques and computational tools offer holistic and integrative strategies for dissecting the interplay between microbial pathogens and their hosts (infectomics). The identification of small-molecule modulators of biological functions is the key activity in modern drug discovery. This review focuses on infectomics and its application to antimicrobial drug discovery.
农业

PIG GENETIC IMPROVEMENT AND SUSTAINABLE DEVELOPMENT UNDER ECONOMIC GLOBALIZATION

Science & Technology Review. 2005, 23 (0503): 48-51. ;  doi:
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Abstract ( 494 )
China is the largest country of pig production in the world, but the quality of its breeding pig has been dropping behind that of the developed countries for a long time, and its breeding stock has been depending on import. In this paper, based on reviewing new developing of international pig breeding research, the main factors for pig breeding in China were discussed. In order to confront the severe competition for pig production under economic globalization, the basic strategies and principles for near future pig breeding in China were suggested for the present situation of pig genetic evaluation.

DISCUSSION ON SUSTAINABLE AGRICULTURAL DEVELOPMENT ON LOESS PLATEAU

Science & Technology Review. 2005, 23 (0503): 52-56. ;  doi:
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Abstract ( 755 )
An analysis on the causes for lower agricultural productivity on Loess Plateau was made. The loss of soil and water, the dust bowl, decreasing of water resources, increasing of dry land area, etc. are the main causes for that question. However, as the energy, chemical and factory basement of China, the development of agriculture on Loess Plateau will influence on the ecology, economic and social sustainable development of the country. In view of the main problems of that area, and based on analyzing the historical experience, summarizing the successful agricultural developing-model, the sulutions of the agricultural development, rise in peasants' income and rural development on Loess Plateau were suggested.
科研管理

THE IMPLICATION OF INTEGRATED WASTE MANAGEMENT AND ITS APPLICATIONS

Science & Technology Review. 2005, 23 (0503): 57-60. ;  doi:
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Abstract ( 473 )
Integrated Waste Management(IWM) represents the future trend of waste management policies, providing valuable references for the policy-making and implementation of the solid waste management in China. Based on analyzing the development background of IWM, its implications, principles and implementation approaches were discussed. Finally, the application potentials of this pattern was evaluated.

RESEARCH ON BUSINESS PROCESS CHANGE MANAGEMENT MODEL

Science & Technology Review. 2005, 23 (0503): 60-63. ;  doi:
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Abstract ( 478 )
Intense competition forces many enterprises to confront the challenges of changes. As more organizations undertake Business Process Change (BPC) projects, the results of implementation are not satisfied. There are quite few companies that achieve management innovation through changes. The methods of implementing business process changes become a major concern. In this paper, the definition of business process change management, and the key success factors from literature review were explained. a model of business process change management from a systematical view was provided, and each factor influencing on change process was analyzed. Our research would be helpful to the implementation practitioners.

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