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Coke fines were cold briquetted in presence of starch, MJ or SW as the binding agents, from which some optimum binders were selected for the molding of industrial waste coke fines in low temperature. The parameters, such as the binders' ratio and molding pressure, were optimized to determine the suitable ones. Fired under high temperature previously, the resulting formed cokes were characterized of...
The ecological benefits of 10 perennial ornamental grasses named Andropogon scoparius, Bouteloua curtipendula, Bouteloua gracili, Stipa grandis, Festuca arundinacea, Elytrigia repens, Elymus nutans, Agropyron cristatum, Dactylis glomerata and Bromus inermis were studied by determining their ability of CO2 fixation and O2 release, capacity of water releasing and energy absorbed by transpiration, dust...
Gas control technology traditionally based on the physical properties of gas. However, researches show that making use of microbial technology is another way to deal with coal seam gas, but there is no report about industrial application of it. In this paper, firstly a contrast experiment of microbial reagent and water demonstrates methane can be degraded by microbial technology. Then introduce the...
Based on actual situation of biological diversity and by assessment methods and criteria of biological diversity maintenance set up by the state government, applying remote sensing and geographic information system technology, the importance of biological diversity maintenance in Chengde city has been evaluated. According to the results of assessment, the important areas in Chengde city are divided...
As a super country in coal resources exploitation and utilization, China encounters ecological environment problems resulting from large-scale coal mining coupled with rapid economic development that have become increasingly serious such that they directly threaten regional ecological security and people's normal production and livelihood in some areas. How to formulate and implement an eco-friendly...
There are lots researchs about estimation of biological parameters such as vegetation cover (PVC), aboveground biomass and leaf area index by remote sensing satellite data. In this paper, we set nineteen remote sensing plots in the upstream regions of Shule River Basin, they are all 30meters*30meters. We used ASD to collect reflectance of vegetation at Transit time when Landsat TM is passing, there...
An evaluation index system was established to assess wastewater reclamation and reuse project. Considering the different characteristics and main factors of the centralized and decentralized wastewater reclamation and reuse engineering, the index system includes 13 individual indices in five categories: water quantity, water quality, techniques, economy and management. After the index system having...
The benthos in four bays (Rongcheng Bay, Sanggou Bay, Jinghai Bay and Wuleidao Bay) at 19 sampling locations were investigated by taxonomy and calculating the composition, biomass, abundance and diversity indices in the summer of 2006. A total of 13 environmental variables from 19 sampling locations in four bays were analyzed by factor analysis, and spearman correlations of main environmental variables...
The study revised the evaluation index of the single factor Precipitation R value of the soil erosion sensitivity on the basis of USLE. In the support of GIS software, the study had a hierarchical and comprehensive evaluation about the impact factors of the soil erosion sensitivity. Results show that mild sensitive area accounts for 42%, moderate sensitive area accounts for 22%, highly sensitive area...
Based on the deterioration mechanism of expressway pavement, the effect of highway quality (abbr. EHQ) is added to the impact factors of expressway pavement maintenance, and grey fixed-weight clustering method is used to analysis and calculate it, taking some of expressways in Shandong province as example. The simulation and prediction of expressway pavement current repair is improved to be more accurate...
Through the study of dramatic landscape pattern changes in the coastal zone of Nantong, China in 2003, 2005 and 2008, the influence of urbanization on natural landscape were reproduced using ARC/INFO software. Firstly we divided the remote sensing data into six categories, and then calculated varieties of landscape pattern indices according to Fragtats 3.3 software, we also counted spatial landscape...
Based on the performance-based thought, making the max stress and energy dissipating as the design parameter, A new seismic design methods for suspending oil pipeline is given out. Drawn on the experience of the seismic design for reinforced concrete structure, the seismic damage model of the suspending pipeline is given out for the design, and two-stage design method of the suspending oil pipeline...
The RS and GIS research new technologies which suitable for large-scale regions research and the landscape index analysis method were used to study the overall land use pattern characteristics and dynamics trends of Xinzheng city from 1995 to 2000 by analyzing the remote sensing image maps. Results show that: the building lands increases unceasingly, forest land, meadow and waters area gradually reduced;...
In this paper, the competitiveness of various cities of Shaanxi province is analyzed. Firstly, the article establishes the index systems of city competitiveness; furthermore, the comprehensive scores on competitiveness of all the cities in Shaanxi province are calculated by means of the Principal-Components-Analysis method. Secondly, the locations of breakpoint of the adjoining cities are measured...
In this paper the data in central China from routine meteorological station and registering rain gauge were used to get the precipitation of every per hour. The feature of the precipitation and its interannual and interdecadal variations were analyzed. The results showed that, the rainfalls in flood season of central China were differences in spatial and temporal distribution. The precipitation concentration...
Regional Land use changes display not only in land quantity and quality but also in land use pattern. As an important characteristic of land use, the stability is also a major characteristic of land use dynamic and ecological process in land use pattern, For the coordinate of regional land use patterns and environmental condition, we should pay attention to land use changes, at the same time, pay...
According to the Xixi wetland conservation project, Xixi National Wetland Park is divided to 3 functional zones, the 4000 patches in the park is categorized to 7 patch types, and the usage of landscape metrics at both the class level and the landscape level studies characteristics of the landscape spatial pattern. The results indicate: there are numerous patches in the park, landscape richness is...
After conducting a pull-off test, the bond and anchorage characteristics of pre-stressed steel bars with spiral grooves were analyzed and the bond and anchorage strength was statistically regressed. The reliability was analyzed on the basis of the experimental study. Recommendations for the design of anchorage length of pre-stressed steel bars with spiral grooves were proposed.
Based on SPOT5 remote sensing image in 2008, the landuse landscape map of Huicheng Destrict was made by manual and Object-oriented Classification interpretations with ENVI and ArcGIS software. Through the calculation of landscape metrics, the formation of landuse landscape pattern in Huicheng, which as a case of outer area of Pearl River Delta, was analyzed quantitatively. The results indicated that...
In order to instruct the design of composite foundation for foundation engineering practice in probabilistic limit on the basis of utmost design principle, provide the theory basis and the technical reserves. This paper presents a simplified relationship between the reliability indices for the serviceability limit state βs and ultimate limit state βu of CFG Pile Composite foundation. Under certain...
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