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With the development of recycled aggregated concrete researches, and the exhausting of construction materials, it's safe to predict that wider application of recycled aggregated to engineering construction is an inevitable trend. Here a practical problem is presented whether the concrete can be recycled again when the structure constructed by recycled aggregates needs to be demolished or maintained...
Based on the red clay of Wuhan reinforced by Ionic Soil Stabilizer, the red clay was treated by different matches of ISS and water at first, then was tested in the Atterberg limits test and unconfined compressive strength test. The results show that the plastic index decreases, and unconfined compressive strength increases after mixing the ISS into the red clay. In addition, strength of ISS-reinforced...
Multi-elements Decision-making is one of the important methods which simulate reality problems in both social and economic fields. By using grey decision model and analytic hierarchy process, it probes a newly method of multi-elements decision-making. And by using the software of Matlab and Excel, it also develops a process of optimization sorting algorithm which could describe and calculate the actual...
2, 4-dienoyl-CoA reductase 1 (DECR1) is an auxiliary enzyme of β-oxidation, and it participates in the metabolism of polyunsaturated fatty enoyl-CoA esters. The full-length cDNA of DECR1 was first cloned from Mashen pig liver, and bioinformatics analysis were then conducted to predicted the physicochemical property, homologous analysis, modification sites and structure of DECR1 protein. Sequence analysis...
Based on RS and GIS, the spatial difference of landscape pattern and ecological stress in the Jiangsu Nantong city was analyzed by some indexes, from two angles of positive and negative landscape types to increase ecological effect. Generally speaking, from coastal and riverside region to interior towns, the diversity index and patch fractal dimension were reducing, and the dominance index and patch...
Based on the SPOT VEGETATION NDVI data, the spatial-temporal variations of vegetation cover in Hexi region of Gansu province were analyzed by using the MVC (Maximum Value Composites) method and the linear regression analysis during 1999 to 2009, the NDVI change trends and characteristics of different land use types were extracted. According to the results, during the last 11 years, the vegetation...
Based on the renewable sources energy, this paper proposes a modified tourism ecological footprint (TEF) model by using energy theory and method to assess the environmental capacity of regional tourism in certain area, which is named as tourism energy ecological footprint (TEEF) model. Then it takes Beijing suburbs as an example and adopts the evaluation method and indexes system of the TEEF model...
With the development of spatial information industry, traditional systems that are limited by scalability and reliability cannot well satisfy the huge amount of service need. The cloud computing has advantages of good scalability, high reliability and high availability, which can provide powerful technical support to promote the capability of spatial information service system. This paper proposed...
As a closed inland lake, Gahai Lake is located in Delingha Basin, the northeast Qinghai—Tibet Plateau. It is very sensitive in the response to climate change and is the ideal location to study the regional environment response to global change. Based on comprehensive analysis of granularity, magnetic susceptibility and pollen in DG02 core obtained from the west-northern margin of Gahai Lake, this...
In this paper, Yushenfu mining area is taken as an example. On the basis of analysis and research of formation mechanism of mining subsidence, using principal component analysis and grey correlation analysis method, factors which affect the damage degree of mining subsidence have been selected. It is determined that disturbance coefficient, the ratio of width to depth, comprehensive hardness of overlying...
In Shared-Savings EMC projects, EMCo bears almost all the risks, including those of external environment, energy-saving technology, marketing, organization and management, and customer. Therefore, Risk prevention and risk management is especially important for EMCo. This article analyzes the features of Shared-Savings EMC's risks, apply subjective grading method to make a qualitative analysis, and...
The vegetation change is widely accepted as a distinct ecological effect of urbanization, and the fraction of green vegetation based on remotely sensed data has been a key approach to study the land use and land cover change. Based on the existing researches about landscape patterns, this paper integrated the fraction of green vegetation into the gradient analysis to quantify and capture the spatial-temporal...
[Objective] The research aimed to optimize extraction process of total flavonoids from Pteridum aquilinum var.latiusculum and provide a theoretical basis for development and utilization of total flavonoids from Pteridum aquilinum var.latiusculum. [Method] Taking the yield of total flavonoids as index, the orthogonal test L16 (44) with four factors and four levels was used to optimize the technological...
Between the year 2005 and 2007, the authors monitored the habitat of golden monkey (Rhinopithecus roxellana) with the geography information system, remote sensing and global position system. We record the transect, altitude, forest canopy cover, the height of the tree, slope. Vanderloeg and Scavia selective index was used to evaluate the golden monkey's selection for varied habitat parameter. Through...
Effect of salinity on some agro-physiological parameters in plants of one multigerm variety and five strains of sugar beet has been investigated. Plants were submitted to two salt treatments, 0 and 280mmol/L NaCl for 16 days in a water culture and the physiological responses were measured. Salinity affected all of the considered parameters. Thus, high NaCl concentrations caused a great reduction in...
Water conservation is the important service function of ecosystem. To seek the coordinated growth of the economical development and environmental protection, the delimitation of degree grading and zoning of the water conservation in different regions has become an important precondition for the development of local economy. Based on the analysis and other functions of Arcgis softwares, the data is...
Spatial distribution of metal concentrations in the surface sediment samples collected from 19 marine at Guanhe estuary in Haizhou Bay, Lianyungang was studied. Heavy metal (Cu, Zn, Pb, Cd, Cr, As, Ni, Mn) concentrations were determined and geo-accumulation index (Igeo) was calculated to understand the pollution status of the study area based on the background values. The ranges of the measured concentrations...
In order to protect China's environment, especially the aqua resources and environment, to promote the trait-centered quality and to construct a sustainable development society, it is necessarily for us to analyzing the awareness of aqua resources and environment. For that, the questionnaire research is carefully put up, choosing the primary school and high school students in Nanjing city, Jiangsu...
In order to solve the problem of nitrogen over-use in high yield direct seeding rice after cultivating wheat, the research explored different nitro-saving cultivation method from 2008 to 2009, by increasing the rice planting density to enhance yield on wheat stubble. This study set up a test of different direct seeding density in 2 years continuously with 150 kg nitrogen application dose per hectare...
By means of landscape ecology theory and method, it takes Taiyuan which is a national important energy industrial city as a case study with the aid of RS and GIS based on the ETM data in 2008.It takes surface radiant temperature as the urban thermal environment effect's index in order to analysis the relations of green patch characteristic and thermal environment, and provide a basis for urban green...
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