Advanced Materials Research Vols. 998-999

Abstract: In order to query and manage the graphic files efficiently, and improve the graphic management system in the enterprises, based on the research of dwg、dxf formats, using VC++6.0 language, the graphic title bar information database was created in the Access. With the ODBC interface connected to the graphic database, the preview and query of the graphic database were realized with ActiveX technology. By designing and programming good interactive interface, graphics could be modified and translated conveniently as well as updating the database etc. Simultaneously, by setting identification, the security management of the graphic database was realized. Ultimately, the delivery of enterprises was highly improved.

Abstract: This paper describes a modeling framework of the center of gravity (COG) analysis system (COGAS) based on the coordination theory and the analytic network process (ANP). Then the framework shows how COGAS is used as basis of construction, calculation and analysis of the COG networks. The importance of this work is that it uses the coordination theory to identify the dependencies on target, and it augments the ANP to support rapid decision-making and overcome the subjectivity of human.

Abstract: Vegetative filter strip (VFS) is be defined as areas of vegetation designed to remove sediment and other pollutants from surface runoff. Many factors affect the effectiveness of VFS. So the quantitative analysis on relation between effectiveness and influencing factors had been conducted based on the plot experiment data in this paper. Result reveals that the order in impact degree of its factors is: inflow rate factor > width factor > vegetation condition > pollutants concentration in inflow > initial soil water content factor, the relation equation of purification effect and VFS width is the form of logarithm, and the relation equation of concentration reduction rate and inflow rate is the form of power function. Furthermore, a simple empirical model had been developed to predict sediment trapping efficiency in allusion to Chinese northwest region, which can provide computational basis for design of VFS in northwest region and other similar areas.

Abstract: This study assessed and analyzed the sustainability of the Beijing-Tianjin-Hebei region by converting the human consumption to the land area appropriated, which is integrated in emergy analysis ideas, and compared the contributions to the total ecological footprint from the different biological productive land. The result showed that per capita emergy energy footprint and the corresponding ecocapacity in the study area are 1.0033 hm² and 0.7300, respectively, showing the Beijing-Tianjin-Hebei region in 2010 had an unsustainable development pattern, since that the human consumption had been increasing along with the acceleration of industrialization and urbanization.The outcomes and values of the ecological footprint intensify and ecological pressure index were presented to depict severe insecurity of ecological system, and the current science technology level optimization may be still hard to counteract the enormous ecological environment pressure. The emergy ecological footprint structure provided the improvement direction and points in such complex sustainable development system. The study would provide the foundation for regional sustainable development research in similar areas.

Abstract: The Changsha city of Hunan province was selected as study area to monitor the concentrations of PM_2.5 and NO₂ in ambient air automatically. The correlation relationship between PM_2.5 and NO₂ was also analyzed. Results showed that the concentrations of PM_2.5 and NO₂ changed significantly with seasons, and they manifested the same change trend, as winter > autumn > spring > concentration in summer. In a day, the lowest concentration of NO₂ generally appeared in the afternoon. However, the present time of lowest and the peak values of PM_2.5 concentration were uncertain. The highest concentration of NO₂ was in the business district, and the distribution of PM_2.5 concentration did not have an obviously regional. Furthermore, the PM_2.5 and NO₂ concentration changed in positive correlation, and these two were easy to produce pollution overlay. On the whole, the main seasons to control PM_2.5 and NO₂ were winter and autumn.

Abstract: Mirabilis jalapa seedlings were cultured in hydroponics, root exudates (RE) were collected by concentrating the deionized water, in which the M. jalapa seedlings transferring to. Collected root exudates were subjected to the soil with winter wheat cultivation and wasteland. Soil available nutrition contents, enzyme activities and microorganism population were determined. The results showed that the root exudates of M. jalapa could significantly reduce the contents of the available K, available N and P in soil under the higher input. But higher input of M. jalapa root exudates significantly improved ( P<0.05) the organic matter in soil. The exudates could reduce the soil enzyme activities except for protease, and which was elevating along with the raising input. The difference was significant when the input of root exudates was middle level. But higher input of M. jalapa root exudates significantly enhanced ( P<0.05) the activity of protease in soil. The amount of bacteria and actinomycetes in treatment LC and HC showed an evident reduction in the population of living microorganisms. However, the population of fungi increased under treatment LC and MC, which was almost twice as much as that in corresponding control when the root exudates was middle concentration. But the fungi population in treatment HC was significantly lower than that in corresponding control. Conclusively, the root exudates of M. jalapa imposed a prominent influence on soil micro-ecology environment in wheat field and wasteland.

Abstract: Brewing spent diatomite (BSDT), a beer industrial by-product, was regenerated with calcination. The characteristics of regenerated BSDT were detected by X-ray diffraction, X-ray fluorescence, Fourier-transform infrared, and scanning electron microscopy. The results showed that the mineralization of the surface adsorbate and the remarkable increase in the Si-OH decreased the pHpzc value from 7.6 to 5.2 and increased the surface area from 36 m2/g to 52 m2/g after calcination at 800 °C. The results show that the regenerated BSTD could be employed as an efficient adsorbent for the recycling of BSDT.

Abstract: For the problems that the characteristics of diary return water time series in Ningxia Qingtongxia Irrigation area ,this issue studied it by using time series analysis, phase space reconstruction and saturation correlation dimension and other methods.The research results showed that diary return water time series in Qingtongxia irrigation area is a non-white noise stationary time series, and it has the chaotic characteristics, the saturation correlation dimension of it is 1.81, the embedding dimensionality of it is 9.

Abstract: Ecological tourism's development must be based on the eco-tourism resources. Building a reasonable and scientific evaluation model for the eco-tourism resources is good for the science of ecological tourism's development and the accuracy of the laws of nature and the sustainable development of human. Based on the traveling accommodation ecological footprint model and traveling transport ecological footprint model, the paper is to make a quantitative analysis of Huaian tourism sustainable development. It provides strategies of the management for tourism destination and provides theoretical basis for the future development planning and drafting corresponding policies.

Abstract: Natural grass field is an important part of natural grasslands. This paper sets Xinjiang ZHAOSU County Shaertao Mountain natural grass field as an example, treats the eight factors index that can reflect the nature and economic characteristics of grassland resources of natural grass field as a basis, and gives the case of comprehensive evaluation on grassland resources of natural grass field by the AHP to provide a reference for other researchers.