Advanced Materials Research Vols. 347-353

Abstract: According to statistical yearbook of data in the provinces and cities of China in 2010, different developing level of provinces which represents environmental protection are selected as research samples from environmental protection, they are Henan, Anhui, Hubei, Hunan, Shanxi, Jiangxi and Heilongjiang. Using entropy and TOPSIS evaluating model analysis for each target to calculate weight; evaluating and analyzing competitiveness of environmental protection industry in the central region of the provinces combined with the weight. The results show that: Henan>Anhui> Hubei > Shanxi > Hunan > Jiangxi > Heilongjiang.

Abstract: China has the abundant agro-residue resources, producing about 20% of total energy consumption in rural areas. Improving the ability of technology innovation is crucial for providing efficient utilization of bioenergy. In order to evaluate the ability of technological innovation of biomass energy industry, this thesis constructed index system, organizing data using SPASS and uses coefficient of variation to analyze the gap between China and other developed countries. The results show that the ability of China's biomass energy industry has great potential for technological innovation.

Abstract: After the analysis of ore properties and experiments, a suitable process is determined, and a better index is obtained under this process, which is copper concentrate 20.33 % and the recovery 95.23 %. This process provides technical reference to this kind of copper resourses.

Abstract: In this paper, heat transfer model is assumed in coaxial radial heat pipe(CRHP) firstly. To verify the model , visualization and performance experiment are studied. Visualization experiments of CRHP are done under different filing radio of 20%, 30%, 35% and inclined angles of 0°(horizontal), 5°, 10°, 15°, 20°. Visualization experimental results show that CRHP of horizontal and 30% filling ratio is better on thermal characteristics. Its heat transfer model is preliminary analyzed from experimental phenomena. In performance experiment , the kind of CRHP is used to test heat transfer characteristics. The temperatures of the outside wall of outer pipe are determined and drawn diagrams. Lastly, heat transfer model is corrected anew by analyzing experimental datas.

Abstract: The core component is temperature-sensing resistor in the temperature control circuit. If the resistor is still used in the circuit after its wearing off, temperature control point deviation will be caused and working requirements are not being met. Temperature-sensing resistor requires to be replaced frequently while the components with the same performance are not readily available. In this paper, computer simulation technology and bi-directional parameter scanning are introduced to analyze the influences on circuit which are caused by compatible circuit component parameters. Thus, a circuit parameter selection plan, designed to correspond to specific temperature sensitive resistor, is formulated to adjust temperature-sensing resistors with different specifications to achieve the same control effect.

Abstract: After the surface of nano-CaCO3 was modified with aluminate coupling agent by wet-modification, aluminate coupling agent dosage of 2.5% is the best through activation grade and oil-absorbed value. Then the modifier amount can be regarded as the best dosage that is confirmed by settlement volume in liquid paraffin and the modified mechanism is given in the end of the paper.

Abstract: Abstract. In the western China, since special geographical condition, vulnerable ecological environment and environment pollution from oil development, the regional economic society suffers from dire threats. For a long time, the local economic development walks along the same path that “treatment after pollution, recovery after damage”. In order to economic development, many governments pay a little attention at environment. So, the ecological environment must be taken attention to protect and the west oil companies must undertake the society obligation and protect the environment during the domestic oil resources strategic shift from east to west. In this article, the effects on ecological environment from oil development of northwest oilfields were analyzed, and the reasonable measures were put forward to protect the vulnerable environment.

Abstract: The product assembly as the final manufacturing process is one of the most important part, its quality has a major impact on product quality. Application of lean quality management in product assembly improve the assembly quality, efficiency and cost are the quality management of the new trends. Research on quality management, analysis all aspects of quality control around the assembly process, store electronic resume of assembly process, analysis quality defect, forecast and optimize the matching of key parts, which significantly improve the quality of the assembly process of the enterprise performance and business performance.

Abstract: CO₂ miscible flooding is an environmental recovery method to greatly enhance oil recovery by the gas of CO₂ which leads global warming. In view of the fact that there are many influence factors of seepage law in CO₂ miscible flooding, the four influence factors of pore structure, injection rate, reservoir heterogeneity and initial oil saturation are analyzed by means of reservoir numerical simulation to screen out the main control influence factors in this paper on the account of the characteristics of serious reservoir heterogeneity in China. The research result in this paper could provide practical guidance significance to the oilfield development program adjustment at some extent.

Abstract: The solar cooling tube and the economic analysis were studied for supplying cooling and heating capacity on the building. The following conclusion could be drown: The refrigerating output of a single solar cooling tube was about 2 W to 13 W varying with the time. And the unit made up by 20 solar cooling tubes could supply about 3.96 MJ cooling capacity and 10.73 MJ heating capacity. The investment of the solar cooling tube combined with average 20m2 building is about 46000 RMB at present price and the fixed number of years necessary for redemption is about 7.5 years.