Advanced Materials Research Vol. 1051

Abstract: In order to learn gravel sulfate saline soil can be used as roadbed filler, the salt expansion law of gravel sulfate saline soil was experimental studied. In high and low temperature testing device, large salt expansion tests were carried under the change of temperature, salt content, initial density, water and overlying load. The tests were based on the soluble salt content preparation method of screening method of 5mm. It was shown that the salt expansion volume increased with the cooling rate slowed down. The sensitive temperature range of gravel sulfate saline soil was during-5°C—-10°C. The allowable salt content of gravel sulfate saline soil was around 2%, when the gravel sulfate saline soil was used as roadbed filling.

Abstract: A reasonable prediction of low flow years in a region in the future so as to make deployment in advance is related to the stability of the region. This paper established conventional GM (1,1) model and improved GM (1,1) model based on grey system theory to predict low flow years in the upstream of Zhang River which has gray characteristics so as to avoid risks, improve spatial and temporal allocation of water resources and promote sustainable development of the basin. The research shows that improved GM (1,1) model which can improve the smoothness of the original data series provides a more accurate prediction than conventional GM (1,1) model by using the example of Zhuozhang River tributary in the Upstream of Zhang River.

Abstract: The article presents the results of the research work on the peculiarities of recultivation of the ash dumps of power station No1 (PS1) in the city of Khabarovsk. The research showed that the climatic conditions of the region promote the dust dispersal of toxic agents from the surface of the ash dump. The pollution of the air basin here can be attributed to the extremely high level of pollution (EHP), the priority pollutant is the dust containing heightened concentrations of heavy metals (Pb, Mn, Cu, Cr, Co, Ni, Cd). As a result it leads to the deterioration of the population’s health, especially to the high level of respiratory organs diseases. The research of the sprouting of the herbaceous plants (mixture of timothy-grass, clover and mustard) on prepared model soils showed their healthy growth. The ash chemical composition was studied. It showed high concentration of toxic chemical elements (Hg, Be, Sr, Cd, V, Th, 40K, Cr, Mb, AS, Sb,Se, Te, Pb, Ni, Co). The migration intensity of heavy metals ions into the plants was analyzed. On the basis of the experimental research the optimum composition of the substrate was revealed and recommended for recultivating the ash dump of PS1, namely: soil+sand+ash. Climatic conditions of the Khabarovsk Krai do not permit to recommend the sand+ash substrate for recultivation because of strong winds.

Abstract: Batch equilibrium adsorption was conducted to study the adsorption of copper in the black soil and the effect of 2, 4-dichlorophenoxyacetic acid (2, 4-D) on adsorption of copper was probed by soils. The results showed all of the adsorption isotherms of copper in the absence and presence of 2,4-D could be described by Freundlich equation (R²>0.99), the adsorption coefficients K_f increased with increasing concentration of 2,4-D.The In kinetic modeling, the pseudo-first order equation was considered as the most celebrated model. The pseudo-second order equation in copper was depressed in the presence of 2, 4-D. 2,4-D diminished the adsorption of copper on the black soil.

Abstract: At the beginning of this paper, the contradiction between less design and more design is led to by the hot subject of global sustainable development. Then the concepts of less design and more design are defined, and the two factors (human and nature) which affect the global sustainable development are analyzed. After that, the game model of less design and more design is set up and the Nash equilibrium is deduced, which is helpful to bring some ideas and suggestions for keeping global sustainable development. Finally, the game between human and nature is discussed deeply from a philosophical level, and the theory “Taosim follows the natural laws” in Taosim is proposed to solve the contradiction.

Abstract: The article describes the modeling results of drainage water in the tailing dumps of Komsomolsky tin ore district in the temperature range from-10 to +45 °C. Eh-pH parameters of technogenic mineral systems for different ratios of host rock - sulfides (95:5, 90:10, 80:20 and 60:40) in the tailings were determined. The process of hypergene mineral crystallization from micropore solutions was researched, its qualitative and quantitative ion composition was established and its impact on surface and ground water of the district was showed.

Abstract: Based on a general equilibrium model, we estimates the potential economic benefit of water rights transfer from agriculture to industries. We use the input-output table of China 2010 to build the general equilibrium base solution, and simulate the improvement of the technical efficiency of agricultural water use and the transfer of the saved water to industries. Results show that the transfer of water right from agriculture to industries can contribute to real GDP growth, price level decrease, and industries’ output growth.

Abstract: Lebanon is known as a tourist destination for its scenic green mountains but the fires have been threatening this green forestry all over the world. The consequences of forest fires are disastrous on the natural environment and ecological systems, not to mention the population, by worsening poverty and lowering the quality of life. Two data mining techniques are used for the purpose of prediction and decision-making: Decision trees and back propagation forward neural networks. Four meteorological attributes are utilized: temperature, relative humidity, wind speed and daily precipitation. The obtained tree drawn from applying the first algorithm could classify these attributes from the most significant to the least significant and better foretell fire incidences. Adopting neural networks with different training algorithms shows that networks with 2 inputs only (temperature and relative humidity) retrieve better results than 4-inputs networks with less mean squared error. Feed forward and Cascade forward networks are under scope, with the use of different training algorithms.

Abstract: Sums up the method of city greening status investigation on RS, GIS and other spatial information technology platform, following" Standard for classification of urban green space", "Evaluation standard for urban landscaping and greening". Practices with Zoucheng as the example. And proposes the application range of the method.

Abstract: In this paper, the use of biosorbents prepared from fruit wastes for removal of anionic dyes in wastewater was investigated. A versatile, scalable and configurable envelop protocol was developed for biosorbents screening and process scale-up evaluations. The results obtained show that enveloped systems did not alter equilibrium and kinetics profiles from those of the standard free sorbent-sorbate systems under the experimental conditions studied. Inherent non-ideal sorbent-sorbate interactions were likely contributor to the observed discriminating features of the linear isotherm fits of the enveloped systems. The results also showed that sorbent weight:sorbate volume ratio (S/L ratio) could be used to characterise the sorbent-sorbate system.