TB853.17 99053257采用最早到达光透过高散射介质成像=Imagingthrough highly scattering media using first—arriying—light[刊,中]/侯比学,陈国夫(中科院西安光机所,瞬态光学技术国家重点实验室.陕西,西安(710(68))//物理.—1999,28...TB853.17 99053257采用最早到达光透过高散射介质成像=Imagingthrough highly scattering media using first—arriying—light[刊,中]/侯比学,陈国夫(中科院西安光机所,瞬态光学技术国家重点实验室.陕西,西安(710(68))//物理.—1999,28(3).—173—177,167综述了最早到达光方法透过散射介质成像技术,介绍了克尔快门时间空间选通成像技术,共焦扫描条纹相机成像技术、非线性二次谐波产生—互相关选通成像技术及电子学全息选通成像技术目前的发展状况,对其优缺点给出了评述。图6参19(李瑞琴)展开更多
The pore structure images of ore particles located at different heights of leaching column were scanned with X-ray computerized tomography (CT) scanner, the porosity and pore size distribution were calculated and the ...The pore structure images of ore particles located at different heights of leaching column were scanned with X-ray computerized tomography (CT) scanner, the porosity and pore size distribution were calculated and the geometrical shape and connectivity of pores were analyzed based on image process method, and the three dimensional reconstruction of pore structure images was realized. The results show that the porosity of ore particles bed in leaching column is 42.92%, 41.72%, 39.34% at top, middle and bottom zone, respectively. Obviously it has spatial variability and decreases appreciably along the height of the column. The overall average porosity obtained by image processing is 41.33% while the porosity gotten from general measurement method in laboratory is 42.77% showing the results of both methods are consistent well. The pore structure of ore granular media is characterized as a dynamical space network composed of interconnected pore bodies and pore throats. The ratio of throats with equivalent diameter less than 1.91 mm to the total pores is 29.31%, and that of the large pores with equivalent diameter more than 5.73 mm is 2.90%.展开更多
文摘TB853.17 99053257采用最早到达光透过高散射介质成像=Imagingthrough highly scattering media using first—arriying—light[刊,中]/侯比学,陈国夫(中科院西安光机所,瞬态光学技术国家重点实验室.陕西,西安(710(68))//物理.—1999,28(3).—173—177,167综述了最早到达光方法透过散射介质成像技术,介绍了克尔快门时间空间选通成像技术,共焦扫描条纹相机成像技术、非线性二次谐波产生—互相关选通成像技术及电子学全息选通成像技术目前的发展状况,对其优缺点给出了评述。图6参19(李瑞琴)
基金Project(2004CB619205) supported by the National Key Fundamental Research and Development Program of ChinaProject(50325415) supported by the National Science Fund for Distinguished Young ScholarsProject(50574099) supported by the National Natural Science Foundation of China
文摘The pore structure images of ore particles located at different heights of leaching column were scanned with X-ray computerized tomography (CT) scanner, the porosity and pore size distribution were calculated and the geometrical shape and connectivity of pores were analyzed based on image process method, and the three dimensional reconstruction of pore structure images was realized. The results show that the porosity of ore particles bed in leaching column is 42.92%, 41.72%, 39.34% at top, middle and bottom zone, respectively. Obviously it has spatial variability and decreases appreciably along the height of the column. The overall average porosity obtained by image processing is 41.33% while the porosity gotten from general measurement method in laboratory is 42.77% showing the results of both methods are consistent well. The pore structure of ore granular media is characterized as a dynamical space network composed of interconnected pore bodies and pore throats. The ratio of throats with equivalent diameter less than 1.91 mm to the total pores is 29.31%, and that of the large pores with equivalent diameter more than 5.73 mm is 2.90%.
