Advanced Materials Research Vols. 779-780

Abstract: As far as the core of internal data structure is concerned, the elements of Building Information Modeling (BIM) platform relate to each other as components of families, independent of their materiality, parametric dependencies, geometrical structure, or their physical connection to other elements. Considering a building as an organism, this research aims at developing an evaluation methodology for buildings, based on their environmental performance. The methodology to be established is multi-objective, uses different weights and values assigned to the parameters of the families members, and checks and balances the system characteristics in order to come up with a dynamic criteria meant for guiding in the overall design and building process. This paper establishes a solid set of methodological tools that can be used for assessing a buildings environmental performance, and develops independent researches for architectural designs, alongside incorporating the ecological thoughts and building.

Abstract: This paper introduces the analytic hierarchy process, and applies in the process of engineering project risk evaluation of navigational environment safety. This paper takes the breakwater project of a harbor as an example for analysis, through the recognition of each risk source and risk factor that the project influences on navigation safety to determine the risk indicators, and uses analytic hierarchy process to analyze the impact of various risk factors on navigation safety, thus gains the overall influence of project on navigation safety. This can be used as an auxiliary tool of engineering risk management.

Abstract: Siltation in the rivers downstream of sluices is serious in China, making the discharge capacity of rivers decrease obviously and threatening the flood control in upper rivers. Tidal wave deformation is one conclusive dynamic factor leading to siltation downstream of sluices in estuaries. Take SheYanghe estuary as an example, the hydrodynamic characteristics of tidal wave deformation and sediment characteristics change before and after the construction of sluice are analyzed.

Abstract: This paper studied the photocatalytic reduction kinetics of bromate in aqueous dispersion of TiO₂ and investigated the effects of experimental parameters, including initial concentration of BrO₃^-, pH, TiO₂ dosage, anion and cation. The results indicate that the process of photocatalytic reduction of bromate follows a zero-order kinetics. In all the investigated experimental parameters, the initial bromate concentration, pH and anion have great effect on the photocatalytic reduction kinetics. The processes of photocatalytic reduction of bromate show the pseudo first-order kinetics at initial bromate concentration of 0.39 μmolL^-1, pH=5.0, or in presence of HCO₃^-/CO₃^2-, NO₃^-, SO₄^2-, respectively.

Abstract: By collecting dust samples from seven different functional areas of Guiyang city, we studied the distribution pattern of the level of Zn in dusts with particle size fractions. The result showed the geometric means of Zn concentration in dusts of Guiyang was 435mg/kg. The Zn in most functional areas was primarily associated with middle particles, while the Zn in industrial area and garbage stations were primarily associated with fine particles.

Abstract: In order to achieve the goal of purifing the waste water and recycling of copper, use the electrodeposition to treat the copper-containing wastewater. The experiment studies the effects of electrode materials, cell voltage, plate distance, pH and other experimental conditions in the process of deposition and the effect of blowing nitrogen in the process of deposition. The results show that the best condition is using graphite-aluminum electrode, cell voltage is 7V, plate distance is 10mm and pH is 3 under the condition of blowing nitrogen. From which the removal rate of copper can reach more than 93%. Nitrogen can effectively reduce the concentration of dissolved oxygen in the water, reduce the degree of corrosion of the metal and eliminate the concentration polarization and electrochemical polarization in the deposition process to obtain a higher electrodeposition efficiency and current efficiency.

Abstract: Immobilized microbe technologies are expected to be effectively used in wastewater treatment. Removal of heavy-metals from wastewater by immobilized Phanerochaete chrysosporium (Pc) with Ca-alginate and iron oxide magnetic nanoparticles (MNPs) was studied. The results showed that a biosorbent as Pc immobilized by Ca-alginate and iron oxide magnetic nanoparticles was successfully developed. And the iron oxide magnetic nanoparticles played an important role in the increase of biosorption capacity of Pc. Energy dispersive spectrometer (EDS) analysis confirmed that metal ions adsorbed to the surface of the biosorbents were partly transmitted to the interior of biosorbents, mainly embedded with iron oxide nanoparticles and Ca-alginate. Moreover, it was found that MNPs-Ca-alginate immobilized Pc showed a good affinity to various heavy metals, such as Pb(II), Zn(II), Cd(II) or Mg(II) and so on. The results proved the high efficiency of the biosorbents for heavy-metal removal and its potential application in the treatment of metal-containing wastewater.

Abstract: Carbon and nitrogen stable isotopes were studied among different groups and species of marine phytoplankton on the aspect of growth phase and nutrient conditions. Three investigated algal species which represent the Chlorophyceae, Dinophyceae and Desmokontae classes were grown in batch monocultures and analysed for δ¹³C and δ¹⁵N in both exponential and stationary phase. For all the cultured species, δ¹³C signatures range from 24.77 (A.carterae) to 17.10 (P. micans) as well as δ¹⁵N range from-15.66(P. helgolandica) to 14.40(P. helgolandica).These three species (Platymonas helgolandica var. tsingtaoensis, Amphidinium carterae Hulburt and Prorocentrum micans) were also grown under nutrient sufficient and nitrogen or phosphorus deficient conditions. Nitrogen limitation resulted in a more negative δ¹³C signature, whereas no effect could be observed during phosphorus limitation compared to nutrient sufficient conditions. But nitrogen and phosphorus limitation resulted in a more positive δ¹⁵N signature. The results show that the carbon and nitrogen isotopic signature of phytoplankton may be differ among different phytoplankton species, between exponential and stationary phase, as well as between nutrient treatments.

Abstract: XML has already been the standard of data interchange on the Internet. Nowadays, a large amount of data is represented in XML format. However, most of the critical data in businesses are still stored in relational database management systems. It is difficult to query XML databases because of its textual format. This research intends to tackle this problem, and we proposed a system to manage XML documents that could be queried by the query language XQuery. XML documents are stored in relational format and the XQuery expressions are translated into appropriate SQL queries. The results of the SQL queries are transformed into XML documents. Comparing with LegoDB System, our system reduces processing time to search a relation configuration and proposes a better translating and executing technique which is more efficiently.

Abstract: With the development of sensor technology, image fusion becomes increasingly important in complex battlefield environment. As traditional methods for precision-guided weapons systems exist defects of fuzzy detection, low recognition rate and poor real-time; this paper proposes a new fusion algorithm of combining wavelet transform with Canny operator. Firstly, the improved method detects the edge with Canny operator; Then using wavelet transform decomposes images; Next, adapts unique fusion rules to change wavelet coefficients of images, using weighted average algorithm for low-frequency component, while using a local area average variance criterion for high-frequency; Finally, using the inverse wavelet transform to obtain reconstructed images. Theoretical analysis and simulation results show: the improved method not only reduces the fuzziness and highlights target color, but also makes computational efficiency high, real-time good.