Advanced Materials Research Vol. 739

Abstract: A well test model analysis that based on the three outer boundary conditions (infinite boundary, closed boundary, constant value out boundary) is established for multilayered reservoir; The solutions to the distribution of reservoir pressure and the bottom-hole pressure are obtained in the Laplace space by the use of the Laplace transform; Though the analysis of solution expressions, the solutions to the reservoir model under the condition of three outer boundaries are found to have the same expression and a new method is obtained to solve the boundary value problem of such models of reservoirsimilar constructive method. The similar structural equation of the solution to the reservoir model ,which is obtained by the similar constructive method, is not only convenient for well test engineer to program the corresponding software for well test analysis but also has an important meaning to the theoretical analysis of the seepage regularity of reservoir.

Abstract: In this paper, the technique: CFRP wrapping combined with CFRP anchors for RC structural member retrofit and its design criteria are introduced for a start. Experimental investigations [1,2, had been adopted and developed the use of CFRP anchors to provide confinement and improve square jacketing behaviors as well as prevent premature debonding for CFRP wraps. To fully determine the anchorage performance of CFRP anchor, a total of forty five specimens for the fiber bolt and the spread tail, two important components in CFRP anchor, were constructed and tested. The experimental results of failure modes were then discussed. For the fiber bolt, an analytical model for single metallic anchor and the best-fit equivalent bond stress were assessed with the test strength. The proposed design strength was also compared and validated the confidence. For the spread tail, the anchoring strength was tested limited due to the fiber rupture even more than the adhesive interface failure. As a result, the influence for the strength capacity of CFRP anchor was determined. The test data are helpful to analyze the behavior and modify the design criteria for the RC member retrofitted by the CFRP anchor technique.

Abstract: This study focus on derivation of such fragility curves using classic mid-story isolation and reduction structures (MIRS) in China metropolis. This study focus on derivation of such fragility curves using conventional industrial frames with masonry infill wall. A set of stochastic earthquake waves compatible with the response spectrum of China seismic code selected to represent the variability in ground motion. Dynamic inelastic time history analysis was used to analyze the random sample of structures. MIRS seismic capability of longitudinal and transversal orientation is different. Stochastic damage scatter diagrams based different seismic intensity index are obtained. Seismic fragility of longitudinal axis (Y axis) is larger than transversal axis (X axis) of frames under major earthquake obviously.

Abstract: When the blasting method is used to demolish the underground thin-walled structure, the safety misadventure occurs possibly due to the small burden, the heavy workload of the drilling and excavation as well as the long construction time, thus, its demolition is more difficult than that of the foundation. This paper describes the new underground thin-walled structure blasting demolition method - the wall-outside blasting charge method and the primary discussion about the blasting mechanism of the wall-outside blasting charge method, which is used in engineering practice. The demolition practice has proved that the wall-outside blasting charge method is a safe, simple and efficient and economic method to demolish the thin-walled structure such as underground sinking well and the pool, its blasting fragmentation is uniform, the fly-rock is easily controlled, and this method has the good economic benefit and the application prospect.

Abstract: Energy efficiency of building, promotes strongly the integration of passive strategies, in order to achieve a thermal comfort especially in summer conditions by reducing or preventing the use of air conditioning systems. In this work, building energy performance has been evaluated using an earth-air heat exchanger (EAHE) during summer period. Energy requirements was analysis by the means of dynamic simulation tools called (TRNSYS) for hot and arid climate in the southern Algeria. This analysis was conducted function of different (such as soil typology, tube material, tube length and depth, ventilation airflow rates). Results show that earth-air heat exchanger has the highest efficiency for arid climates. Furthermore, the possibility of coupling of this technology with other passive strategies (nocturne ventilation and thermal mass) has been also examined. High efficiency was observed.

Abstract: The biosorption of C. I. Reactive Red 2 from aqueous solution onto biomass of Saccharomyces cerevisiae was examined. The biosorption studies were carried out under various parameters such as initial pH, contact time and initial dye concentration. The experimental results showed that optimum pH for dye biosorption was found to be 2.0 for the yeast biomass. The bosorption capacity was increased with the increasing initial dye concentration in studied dye concentration range. It was found that the adsorption equilibrium data followed the Langmuir adsorption model. The maximum adsorption capacity obtained from the Langmuir equation at temperature of 30°C was 500mg/g (R2=0.991) for the dye. The results indicate that the biomass of Saccharomyces cerevisiae can be used as an effective biosorbent to removal C. I. Reactive Red 2 from aqueous solution.

Abstract: For the agricultural land contaminated by heavy metal and thus not suitable for growing food crops, combining green crops with phytoremediation technology can provide more green energy crops and implement the soil remediation through a more economic green remediation method. This study selected three crops, which are rich in biomass energy and are suitable to grow in the climatic conditions of Taiwan, namely corn, soybean and peanut, for Pb-contaminated soil situ vegetation planting tests. The results show that the production of biomass by corn was the highest and each plant could produce 1248 g on average, followed by peanut with the average 470.2 g, soybean only 17.6 g. Regarding Pb absorption capacity, each corn could absorb 87.1 mg; peanut 125.3 mg; and soybean only 5.9 mg. Soybean is not feasible because the low biomass production and the total Pb absorption are far lower than those of corn and peanut.

Abstract: Some common and new office material combination impact on perceived working environment quality used as surface interior materials is presented in this paper. Traditional and progressive materials comparison reveals new fact regarding the TVOCs concentration. Task of the study was to investigate the possibility of using individual material surfaces sorption ability. The chemical analysis and sensory assessments identifies health adverse of indoor air pollutants (TVOCs). The knowledge about the targeted use of sorption effect can be used already in the office working environment design phase. The results demonstrate the various sorption abilities of various indoor materials as well as various sorption ability of the same indoor surface material in various combinations.

Abstract: s. Degraded forests are characterized by decrease in canopy cover density and tree growth; thus, the term degradation implies a loss of forest structure, productivity and regeneration. The decrease is often a consequence of high-grading selection cutting, which means removal of highest quality wood which reduce overall stand quality, illegal felling, and natural disturbance. All these factors result in the loss of ecological integrity of a forest and hasten the degradation process. This presentation introduces the study on structure and dynamic of degraded forests using three examples of typical degraded forests from the tropics of Hainan, the warm temperate zone of Beijing, and the temperate forest in Northeastern city Haerbin. Factors and variables of successional stage, canopy type and regeneration tendency of the degraded forests are analyzed, and operation measures for improving quality and growth of these forests are designed based on findings of the analysis. Preliminary data from improvement operation shows clear positive responses of trees and stands from the improvement operation.

Abstract: In order to study the degradation of herbicide----Quinclorac using microorganism, separate and screen the degrading bacteria CSUFTM62 from soil, this paper researched the degradation effect of bacterial strain on the Quinclorac under different situations, including different increments, different temperatures, different concentrations of pesticide, different pH, and different additive amount of nutrients. The results show that the optimal degradation temperature is 30 ° C; the optimum pH is 7; the degradation rate of Quinclorac reaches its maximum when the concentration is 50mg / L. Adding yeast extract could increase the amount of strain growth but never affect its degradation effects on Quinclorac; combined with the morphological characteristics, the strains CSUFTM62 is identified as the Stenotrophomonas maltophilia by measuring the 16S sequence.