The objective of this paper is the evaluation of business opportunities attractiveness in RER （renewable-energy resources） within a specific geographic area, and using some concepts of integrated energy-resource pla...The objective of this paper is the evaluation of business opportunities attractiveness in RER （renewable-energy resources） within a specific geographic area, and using some concepts of integrated energy-resource planning. The proposed methodology includes the main figures of economic merit evaluated to each resource assessed, the sensitivity analysis on cash flow, and recommendations of investments to each energy option assessed. A study case is applied within the northwest region of Sao Paulo State （Brazil） for those renewable-energy options. Five options of renewable-energy resources were chosen to be evaluated： three ERs （energy resources） from supply side （small hydro, wind farms and sugarcane bagasse） and two ERs from demand side （replacement of incandescent lighting by fluorescent and replacement of electric showers by central heating systems）. The conclusion is that, only two assessed ERs that have received investment grade were sugarcane biomass and fluorescent lamps replacing incandescent lamps. The rest have restriction due different reasons listed.展开更多
In the Benja of Permeti village, eight springs are located in the Lengarica creek, and their curative values are known and used since the time of the Roman Empire. The eight springs erupt mineral water with temperatur...In the Benja of Permeti village, eight springs are located in the Lengarica creek, and their curative values are known and used since the time of the Roman Empire. The eight springs erupt mineral water with temperatures in the range of 23-30℃ and yields in the range of 8 up to more than 40 L/s. The geothermal fluid, even though with relatively low temperatures, represent a competitive energy resource. The geothermal water flows directly to the river of Langarica, similarly with the other geothermal resources of Albania can be ＂translated＂ as ＂throwing in the creek＂ of considerable monetary values, delay in the economic development, infrastructure and also negative social impacts in the region. This paper aims to show that these waters are a competitive energy resource by the implementation of a combined and cascade system, and also they can by efficiently used for greenhouses, aquaculture and salts extraction.展开更多
At the present stage, the exploitation loss and waste of mineral resources are serious.lf this trend goes on, it will undoubtedly accelerate the resource depletion. Based on the values of mineral resources and their n...At the present stage, the exploitation loss and waste of mineral resources are serious.lf this trend goes on, it will undoubtedly accelerate the resource depletion. Based on the values of mineral resources and their natural and economic attibutes, this paper sets up a multi-mine mineral resource exploitation model in the market competition. In addition, it analyses the struc-ture of the model and derives optimal conditions. Finally it gives a detailed interpretation of the practical application of the model for instance.展开更多
The land ecosystem service function value contains the gas regulating function value, air purification function value, water conservation value, land conser-vation value, soil nutrient conservation value and maintain ...The land ecosystem service function value contains the gas regulating function value, air purification function value, water conservation value, land conser-vation value, soil nutrient conservation value and maintain biodiversity value. Based on the method of market value and the data of Hubei Statistical yearbook, cultivat-ed land resources of ecosystem service function value is 730 038.69Mil ion in 2007-2009, and 714 774.99 Mil ion in 2010-2012 in Wuhan Metropolitan Area. After three years of development, Wuhan Metropolitan Area of ecological value of cultivated land has increased by about 3.97%. From the point of each composition, the im-portance of gas regulating function of cultivated land resources and water conserva-tion function is the forefront. From the point of spatial distribution, the highest of annual average value of the cultivated land ecological was Huanggang （1.725 bil ion yuan）, the lowest was Ezhou （217.868 6 mil ion yuan） in 2010-2012. From the point of space changes, the land ecological value increased only in Qianjiang city, while farmland ecological value in other cities was fal ing The conclusion is of direc-tive significance to the regional land protection policy and the farmland reasonable distribution, for Wuhan Metropolitan Area and other areas.展开更多
文摘The objective of this paper is the evaluation of business opportunities attractiveness in RER （renewable-energy resources） within a specific geographic area, and using some concepts of integrated energy-resource planning. The proposed methodology includes the main figures of economic merit evaluated to each resource assessed, the sensitivity analysis on cash flow, and recommendations of investments to each energy option assessed. A study case is applied within the northwest region of Sao Paulo State （Brazil） for those renewable-energy options. Five options of renewable-energy resources were chosen to be evaluated： three ERs （energy resources） from supply side （small hydro, wind farms and sugarcane bagasse） and two ERs from demand side （replacement of incandescent lighting by fluorescent and replacement of electric showers by central heating systems）. The conclusion is that, only two assessed ERs that have received investment grade were sugarcane biomass and fluorescent lamps replacing incandescent lamps. The rest have restriction due different reasons listed.
文摘In the Benja of Permeti village, eight springs are located in the Lengarica creek, and their curative values are known and used since the time of the Roman Empire. The eight springs erupt mineral water with temperatures in the range of 23-30℃ and yields in the range of 8 up to more than 40 L/s. The geothermal fluid, even though with relatively low temperatures, represent a competitive energy resource. The geothermal water flows directly to the river of Langarica, similarly with the other geothermal resources of Albania can be ＂translated＂ as ＂throwing in the creek＂ of considerable monetary values, delay in the economic development, infrastructure and also negative social impacts in the region. This paper aims to show that these waters are a competitive energy resource by the implementation of a combined and cascade system, and also they can by efficiently used for greenhouses, aquaculture and salts extraction.
文摘At the present stage, the exploitation loss and waste of mineral resources are serious.lf this trend goes on, it will undoubtedly accelerate the resource depletion. Based on the values of mineral resources and their natural and economic attibutes, this paper sets up a multi-mine mineral resource exploitation model in the market competition. In addition, it analyses the struc-ture of the model and derives optimal conditions. Finally it gives a detailed interpretation of the practical application of the model for instance.
基金the Scientific Research Fund of Hunan Education Department(project no.13B143)Philosophy and Social Science Fund of Hunan Province(project no.13YBB020)
文摘The land ecosystem service function value contains the gas regulating function value, air purification function value, water conservation value, land conser-vation value, soil nutrient conservation value and maintain biodiversity value. Based on the method of market value and the data of Hubei Statistical yearbook, cultivat-ed land resources of ecosystem service function value is 730 038.69Mil ion in 2007-2009, and 714 774.99 Mil ion in 2010-2012 in Wuhan Metropolitan Area. After three years of development, Wuhan Metropolitan Area of ecological value of cultivated land has increased by about 3.97%. From the point of each composition, the im-portance of gas regulating function of cultivated land resources and water conserva-tion function is the forefront. From the point of spatial distribution, the highest of annual average value of the cultivated land ecological was Huanggang （1.725 bil ion yuan）, the lowest was Ezhou （217.868 6 mil ion yuan） in 2010-2012. From the point of space changes, the land ecological value increased only in Qianjiang city, while farmland ecological value in other cities was fal ing The conclusion is of direc-tive significance to the regional land protection policy and the farmland reasonable distribution, for Wuhan Metropolitan Area and other areas.
