排序方式: 共有17条查询结果,搜索用时 31 毫秒
1.
随着我国高等职业教育的迅猛发展,存在的问题逐渐暴露出来,其中师资队伍建设问题是最为紧迫的问题之一。师资队伍建设是学校最基本的建设,是提高人才、培养质量和办出高职高专特色的关键。 相似文献
2.
山东招平断裂带大磨曲家金矿床流体包裹体初步研究 总被引:1,自引:0,他引:1
The Damoqujia gold deposit, discovered recently and located in the north of Zhaoping fault zone, is a large altered rock type deposit. In this paper, we report the preliminary research results of the fluid inclusions and discuss its metallogenic implications. The homogenization temperatures of fluid inclusions fall into four ranges: 310 ~350℃, 230 ~270℃, 160 ~ 200℃ and 110 ~ 150℃ ; corresponding to the four stages of hydrothermal ore~forming processes : coarse grain pyrite~milk white quartz stage ( I ), smoky gray Au~bearing quartz~fine grain pyrite stage ( 11 ) , Au~bearing polymetallic sulfide~quartz stage ( III ) , and quartz~carbonate stage ( IV ). Ore~forming fluid is with low salinity and low density, ranging from 1.4 WtNacl% to 13.6 WtN~cl% and from 0.48g/cm~ to 1.03g/cm~ respectively. The inclusions are dominated by H20 and CO2 in gaseous compositions, and Na + and K ~ in positive ions, SO~~ and CI ~ in negative ions of liquid compositions. Au~S complex is the major form for transportation of gold. The pressure varied from 260MPa to 340MPa during the formation of CO2~bearing inclusions at the early mineralization; the fluids are rich in SO~~ and Na ". The pressure is 26 ~49 ~ 105 Pa during the formation of the aqueous salt inclusions in late mineralization, the inclusions are rich in CI~ ( F~ ), Na~. ~$18Oqu~,zis 10. 64 ~ 12.68%0, and the corresponding ~518 OH2o and ~&D is -5.44 ~ 6.47%0 and -95.52 ~ 106.48%o respectively. Based on the studies about compositions and hydrogen and oxygen isotopes of inclusions, it is evidenced that ore-forming fluid is magmatic hydrothermal fluid in early period, but affected by meteoric water in late. 相似文献
4.
针对典型的三相整流电路对电网产生的影响,着重研究了易于数字化的SVPWM与无差拍算法,将其应用于并联有源电力滤波器内层跟踪控制中;并给出一种补偿功能较为完善的串并联混合型有源电力滤波器及其控制方法. 相似文献
5.
7.
混沌是近代非线性动力学研究的热点问题。本文简要介绍混沌的特征,在此基础上对混沌信号的产生机制和检测方法进行探讨并分析其在信号处理特别是在通讯技术中的应用。 相似文献
8.
9.
10.
对高职高专师资队伍建设的探索和实践 总被引:1,自引:0,他引:1
随着我国高等职业教育的迅猛发展,存在的问题逐渐暴露出来,其中师资队伍建设问题是最为紧迫的问题之一。师资队伍建设是学校最基本的建设,是提高人才、培养质量和办出高职高专特色的关键。 相似文献