Applied Mechanics and Materials Vols. 556-562

Abstract: This passage put forward two kinds of energy saving evaluation methods for the central heating boiler room: qualitative and quantitative index. And give reference weights for each indicator. Base on the two kinds of index evaluation method to get final boiler energy saving level. The establishment of the energy saving index evaluation system played an important role in the energy saving reconstruction of the central heating boiler in northern area.

Abstract: We develop a novel system for temporal-spatial simulation and dynamic regulation of water quality in water pollution accidents by introducing GIS to traditional one-dimensional system dynamics water quality model. We apply this system to the Songhua River water pollution accident which happened in 2005 and achieve good performance in simulating pollution zone migration and transformation in temporal and spatial dimensions.

Abstract: The Yellow River is the most frequent river for ice flood in our country, including the Ningxia-Inner Mongolia reach is most serious. At present, it lacks basic understanding for thermodynamic factors, power factor, river boundary conditions in ice formation and transport, so needs to increase ice flood information collection and research efforts of Yellow River. The paper introduces ice-wireless video remote monitoring system of Yellow River in Inner Mongolia key sections, mainly focuses on structure and function of the system, which introduces wireless video monitoring technology into ice flood disaster research of Yellow River, and the obtained images were processed with threshold segmentation method. At the same time, the observed data was analyzed in 2012, which demonstrates the applicability and reliability of the device.

Abstract: A new method to calculate the polarization properties of the atmosphere by combining the Rayleigh scattering and Mie scattering is proposed in this paper. We inversed the values of the required data by experiment and simulated of the atmosphere polarization characteristics under the same conditions. The simulation results show that the proposed method can accurately describe the variation of the atmosphere polarization properties. Besides, the results show such variation: in the same weather conditions, the degree of polarization is gradually increased while scattering angle is gradually increased as 90°; in the same detect conditions, the degree of polarization decreases with the deteriorating weather conditions.

Abstract: Heavy oil, with the characteristics of high viscosity and large density, is the most important component of petroleum hydrocarbon energy. In reservoir exploration, its dynamic resistance not only reduces driven efficiency, but also brings much more exploration difficulty, so it is not feasible to exploit heavy oil with conventional methods. Previous studies have carried heavy oil research , but few have attempted to examine the impact of heavy oil on reservoir properties .In this paper, a detailed analysis of heavy oil distribution and remaining oil distribution of G6 block is performed. The conclusion are drawn: the local water flooding and local remaining oil selectively accumulation are caused by heavy oil through reducing water flooding efficiency; As to heavy oil recovery, appropriate exploration should be selected to reduce viscosity of heavy oil according to different geological conditions.

Abstract: It is very important to study the groundwater circulation and water chemistry evolution in the management and protection of water pollution. We use the Fluent simulation technology and the isotope tracer method to do simulation on the flow and distribution of groundwater. In the simulation process we set the model of Fluent isotope labeling group, and enter the groundwater flow parameters in the boundary condition, including water viscosity, osmotic pressure, and the average flow velocity. We use isotope tracer method to simulate the water flow. Finally, according to the law of groundwater flow, we predict the evolution rules of groundwater chemical by using the inverse geochemical simulation technology. It provides a theoretical basis for the management and protection of groundwater pollution.

Abstract: In view of the traditional methods can not accurately identify the far field of the problem of sound source location,Sound pressure and sound intensity combination technique is proposed for identifying environmental noise source. Using the method of sound pressure can test the size of the noise sound pressure and sound intensity method can identify the noise source bearing characteristics identify the noise source. The technology of this noise identification is applied to identify Noise of boundary of a factory and then finds out the main noise source. Test results showed that: Causing the plant boundary noise source are the 3rd, 5th, 6th, 7th sound source, therefore the solution of reducing noise at boundary is developed.

Abstract: In this study, we try to find the possible emission source area of the grey haze through comparing the ground observation station weather data and remote sensing data for the grey haze process that Beijing-Tianjin-Hebei region experienced in November the 8-14, 2013 in which the degree of contamination range from severe to mild to severe. The result demonstrates that before the invasion of the cold air , the coverage of the grey haze reach its maximum where south central areas of Beijing-Tianjin-Hebei is more severer compared with the south central and peri-urban areas of Hebei province. For the greater intensity grey haze companied by the wind convergence in the surface boundary layer, the result of the MODIS satellite monitoring is consistent with the meteorological station observation. Whereas MODIS satellite monitoring method could make up the shortfall of the meteorological station for the mild grey haze in certain degree. After the cold air, haze primary development area is very obvious, and the starting position of haze in the role of diffusion by the wind is also here, based on this can lock the grey haze emission source area and make concrete origination by using the high resolution satellite. The precise positioning could provide the scientific basis for the pertinent management on pollution control for the local government and relevant authority.

Abstract: Grasslands are the important supplementary source of food. Shear strength at high soil bulk density grassland was studied to improve the traction performance and develop the crop yield. Shear force and shear displacement are tested at different vertical loads. Results indicated that with the increasing of shear displacement, shear force was found to show a parabolic trend of first increasing then decreasing. Moreover, larger vertical load would lead to steeper shear force curve against shear displacement. It also should be noted that, the maximum shear stress showed a parabolic increase trend following the increasing of the normal stress. This is the theoretical basis of matching appropriately tractor and implement system to maximize the traction performance and reduce tire slip.

Abstract: Hollow village is a widespread phenomenon all over China nowadays. Finding out the potential utilizable land in rural region and promote the land circulation is of great significance to holding the arable land above the red line of 1.8 billion mu in China. In this study, the image characteristics of circulating land in the study area was analyzed firstly. Then the homestead and wasteland were extracted using object-oriented remote sensing information extraction technology, which include multi-scale image segmentation and establishment of extraction rules based on ENVI. After that the purpose, function and features of extracting system of rural circulating land by remote sensing were explained and the development approach of integration of remote sensing and GIS was discussed. The ENVI/IDL secondary development library platform combined with secondary development tools ArcGIS Engine was adopted. Extracting circulating land by remote sensing images, spatial analysis and mapping functions were realized in this system, using COM technology for multi-language and multi-platform hybrid programming.