Advanced Materials Research Vol. 664

Abstract: In the treatment of methyl orange simulation printing and dyeing wastewater by catalytic wet air oxidation method, the Ru series catalysts were prepared with the equal amount impregnation method. The catalyst activity and stability were characterized by the decolorization rate of the water samples, and the eluted metal ion concentration from the catalyst of the water samples. XRD, SEM, FT-IR were used to characterize the catalysts. The results showed that: when active allocation ratio of the catalyst was Ru:Cu:Fe:Ce:La = 1:0.5:0.5:0.5:0.5, the degradation rate of methyl orange could reach up to 98.5%. And the concentration of each metal component eluted lower after the reaction, while its activity and stability were relatively high.The active component of 1wt% Ru catalyst mainly existed as the form of γ-Al₂O₃, RuO₂, La₂O₃, La₂CuO₄ and CeO₂. The surface of catalyst was relatively flat and flaky. The Ru catalyst appeared strong infrared absorption in the vicinity of 1070 cm^-1, 1650 cm^-1 and 3450 cm^-1.

Abstract: The ceramic printing wastewater was treated with coagulation sedimentation method by adopted AlCl₃ polymerization (PAC) as a coagulant. In order to optimize the wastewater treatment of operating conditions, with absorbance, turbidity and conductivity for testing index, the PAC dosing quantity, stirring time, stirring intensity and influx water pH value on the influence of the wastewater treatment. The results show that the wastewater absorbance and turbidity with PAC dosing quantity increase, mixing time extension and stirring intensity increase present reduced trend, with the water pH increases present first decreases trend of increase; Proper operating conditions of wastewater treatment: PAC dosing quantity 90 mg/L, mixing time 15 min, mixing strength medium speed and influx water pH value is about seven. On this condition, ceramic printing wastewater treatment of effluent decolorization rate reached 86.9%, turbidity removal rate reached 92.5%, conductivity is 2.05 x 10³ s/cm.

Abstract: The generation method of dissolved gas micro bubble is introduced in the paper. The micro bubble producing process can be divided into two stages-nucleation and expansion through analysis. The formation process and the free energy change of the micro bubble is analyzed according to the homogeneous nucleation theory, free energy change formula of the two process is derived, and relation between bubble radius and formation bubble number under certain conditions is also discussed. It is concluded that the smaller the radius of formed bubbles, the more free energy change and initial energy are needed according to the analysis of the relation above.

Abstract: Geographic information system (GIS) Education is booming up in China, GIS applications have already exceeded their areas of expertise driven by the needs of the community and promote the rapid development of GIS education in non-GIS expertise. The necessity and feasibility of application of GIS in the border defense teaching were discussed based on the introduction of GIS functions and some ideas about applications of GIS in the border defense teachingbased on the teaching of the border defense in , and the corresponding ideas were proposed.

Abstract: Recently, aquatic pollution of heavy metals has been breaking out with increasing frequency around the world, which puts great threats to ecosystem and human health. However, there are seldom researches on Early Warning/Emergency Response System (EWERS) of heavy metal pollution. In this present study, we propose a logistic structure and function structure of EWERS on the ground of functional requirement of response to river heavy metal pollution. This system includes five subsystems: heavy metal monitoring, contaminant source information management, emergency management, database and authority management subsystems. It can not only predict the process of heavy metal accumulation processes, but also calculate risk degree for given area taking the water function zone into consideration. For those areas where risk is identified as unacceptable, emergency response plan should be created by case base reasoning to achieve reduction hazard in a cost-effective way.

Abstract: The study applies ASTER imagery for lithologic mapping in Nianqu, Gaize, Tibet, which is a part of the west segment of the Bang suture. According to the mineralogy and lithology of the study area, spectral characteristic of the rock-forming minerals and alteration minerals are analyzed. After resampling the characteristic spectra in to the ASTER spectral resolution, pertinent image processing methods are used to extract the diagnostic features of respective lithology. The results show that the methods and procedures described in this study is applicable to other relevant areas of the Bangong suture.

Abstract: This paper addresses the emerging problem consisting in a correct energy and environmental evaluation of buildings belonging to the new architectural tendency. In fact, innovative buildings are often characterized by new materials that, not rarely, are not contemplated in current environmental databases. Moreover, unconventional shapes of these buildings could require further manufacturing processes that involve additional energy consumption not included in the commercial environmental database. Through the work a spotlighting of the problem is presented with reference to a real innovative building.

Abstract: As an inland city, the spatial form of Changsha has undergone its development for more than two thousand years. Extremely stable development of socio-economical culture made little influence on the form evolution of urban center in Feudal Age. However, from 1904 to 1949, frequent and obvious changes on city’s space configuration appeared along with the socio-economical revolution by reason of opening the port, and the characteristic of spatial replacement of downtown was also especially obvious. Therefore, changes of spatial configuration, as a reflection of free commercial economy after opening port, were studied in this paper to illustrator the self-organizing process of the city space evolution. With respect of studying method, space syntax theory was used to analyze and model the process of spatial organization rather than only using thus history or humanities perspective. After comparing syntactic measurement with five historical periods, the spatial features of self-organizing morphology present three rules: (a) self-similarity of morphological evolution, (b) synergy and disturbance relations by local-global spatial interaction and (c) city business center consistently located in the high integrated spaces. As a result, these rules of spatial self-organizing could be explained by a socio-physical phenomenon of single center configuration with today’s city expansion.

Abstract: Since earlier linking phenomenology to space syntax by the research of David Simon, studying place image based on phenomenology explanation is always the common focus between space syntax and phenomenology. With the common focus further studied, some issues such as descriptive pattern on place space, place configuration and place sense will be combined with space syntax theory. In this paper, based on the internal relations between space syntax and architectural phenomenology, the mechanism of place description, place configuration and place self-adaptive mechanisms were analyzed by space syntax, and a method also will be presented to interpret place phenomenon by using space syntax.

Abstract: The issue of urban cohesion has become one of the hot topics in the academic study. This paper took Xiamen and Zhangzhou cities as a research object to discuss the issue. First, this paper makes a critical review on research into urban cohesion. Supported by software’s of SPSS and ArcGIS, the authors use the data from statistical yearbooks of Xiamen and Zhangzhou cities covering the years of 2003-2011. Based on studies on urban cohesion, this Paper draws some conclusions as follows. The coordination index of industrial structure shows that Xiamen and Zhangzhou cities have the requirement to achieve urban cohesion. Meanwhile, from 2003 to 2011, there is a certain rule in the spatial moving direction and the distance between the economic gravity center and every industrial gravity center. Overall, it shows the trend that the spatial pattern of industry is reasonable in the view of spatial pattern. And urban cohesion will impel Xiamen and Zhangzhou cities to a great development.