摘要：Conceptual design, data model and key techniques of "Geo-engineer 3D assistant", an underground 3D GIS oriented to geology and mine application, were discussed. In particular, the importance of high-order smoothing triangular pieces to surface's fine expression in geological modeling was emphasized. The contour mode is the most favorite mode of the three modes about surface expression: DEM, TIN and contour. Topology in underground 3D modeling with CAGD was compared. From the view of boundary and coboundary, which is soul of IS 19107 (Geographic information spatial schema), 3D underground topology was re-examined.

摘要：To solve the problem of slow leaching speed of copper,surfactant was added into lixivium as leaching agent in the *** on physical chemistry and seepage flow mechanics,the leaching mechanics of surfactant was *** solution surface tension and surfactant adsorbing on the surface of ore have a significant impact on the surface wetting *** leaching rate for response,the study screened out three main factors by Plackett-Burman design method:the sulfuric acid concentration,surfactant concentration and *** these three factors,the surfactant concentration is the most important contributor to leaching *** obtaining the experiment center by the steepest ascent experiment,a continuous variable surface model was built by response surface *** solving quadratic polynomial equation,optimal conditions for leaching were finally obtained as follows:the sulfuric acid concentration was 60 g/L,the surfactant concentration was 0.00914 mol/L,and the temperature was 45 °*** leaching rate was 66.81% in the optimized leaching conditions,which was close to the predicted value,showing that regression result was good.

摘要：It took that the weight minimum and drive efficiency maximal were as double optimizing target,the optimization model had built the drilling string,and the optimization solution was used of the ant colony algorithm to find in *** a two-layer search of the continuous space ant colony algorithm with overlapping or variation global ant search operation strategy and conjugated gradient partial ant search operation strat- *** experiment indicates that the spiral drill weight reduces 16.77% and transports the efficiency enhance 7.05% through the optimization design,the ant colony algorithm application on the spiral drill optimized design has provided the basis for the system re- search screw coal mine machine.

摘要：The working frequency selection of the ZK30525 vibrating screen was studied using ANSYS. Integrating the dynamic performance simulation analysis of the vibrating screen structure, the variation laws of beams＇ vibration displacements changing with different exciting frequencies were researched. These beams include six beams, with one discharging beam and one in-material beam. Results indicate that vibration displacements in the middle of these beams increase with the augmenta- tion of exciting frequency. When exciting frequency exceeds a certain value, there exists a flat change region for vibration displacement. According to vibrator characteristics, the vibrating screen＇s working frequency should be selected in the flat change region, and be far away from modal frequencies. The study provides theoretical guidance for the reasonable working frequency selection of the large-scale vibrating screen.

摘要：Researched on the design and manufacturing of machine tool bed made by Steel-fibber Polymer Concrete(SFPC),which analyzed the static,dynamic and thermal performances of the *** results of study prove that machine tool bed made with SFPC is much more superiority than made in cast iron in dynamic and thermal perform- ances,and is more superiority then made in Polymer Concrete (PC) in static perform- *** can be concluded that the static,dynamic and thermal properties of machine tool can be improved by manufacturing machine tool bed with *** SFPC machine tool bed posses some other advantages in the following: short development time,simple pro- duction process,reducing cost cost,saving energy,iron and steel.

摘要：In our efforts to identify novel potent anticancer agents, we synthesized a series of 2,7-disubstituted triazolo[1,5-a]pyrimidines （6-16）. Their antiproliferative activity against Bel-7402, HT- 1080 and WI-38 cell lines was tested by MTT assay in vitro. Four of the compounds （9-11 and 16） displayed promising antiproliferative activity superior to gefitinib, especially compound 9. A preliminary SAR study of these derivatives was performed.

摘要：In order to improve the utilization rate of foam,an arc jet nozzle was designed for precise dust *** theoretical analysis,the different demands of foam were compared amongst arc jets,flat jets and full cone jets when the dust source was covered identically by *** is proved that foam consumption was least when an arc jet was *** production capability of an arc jet nozzle under different conditions was investigated through *** results show that with the gas liquid ratio(GLR)increasing,the spray state of an arc jet nozzle presents successively water jet,foam jet and *** a reasonable working condition range of foam production and a fixed GLR,foam production quantity increases at first,and then decreases with the increase of liquid supply *** the inner diameter of the nozzle is 14 mm,the best GLR is 30 and the optimum liquid supply quantity is0.375 m^3/*** results of field experiments show that the total dust and respirable dust suppression efficiency of arc jet nozzles is 85.8%and 82.6%respectively,which are 1.39 and 1.37 times higher than the full cone nozzles and 1.20 and 1.19 times higher than the fiat nozzles.

摘要：双向DC/DC变换器中大功率储能电感的设计是一件困难而具有挑战性的工作,提出研究双向DC/DC变换器的交错并联磁集成理论以克服这一困难。将三相Buck＋Boost双向DC/DC变换器的所有相电感集成为一个耦合电感,对磁集成后变换器运行在Buck模式下的稳态电流纹波和暂态响应速度进行深入研究,给出三相Buck＋Boost交错并联磁集成双向DC/DC变换器运行在Buck模式下的设计准则,即在设计这种变换器时,应根据占空比的大小及稳态相电流纹波和暂态总输出电流响应速度的技术要求,利用该文所给出的设计公式和设计区域选择磁集成耦合电感的反向耦合系数。仿真和实验验证了理论分析的正确性。

摘要：This is a greenhouse ecological parameters measurement and control system, the system implements the data collection of field temperature, humidity and carbon dioxide by using the 1-wire bus network which consist of 1-wire bus temperature sensor, 1-wire bus humidity sensor, Analog-to-Digital Converter（ADC）, CO2 sensor and intelligent battery monitor.

摘要：在智能生态成为当今国际上建筑发展的总趋势的前提下,针对国内智能住宅的设计现状,本着以人为本的观点,从智能社区产生的背景、发展概况、智能社区优于智能大厦的功能(周到及时的服务、人性化的管理)及设计目标等方面进行了深入研究,并结合智能小区建设中存在的问题,提出了适合我国国情的技术发展选择以及相应的政策措施。以便人们统一认识,促进智能住宅小区的健康发展,深切地使小区的智能化更贴切地融进人们的生活之中。