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| 1 | 基于嫦娥一号卫星微波辐射计数据的月球Cabeus撞击坑水冰含量研究显示文摘月球极地水冰存在与否、存在形式和存在数量等科学问题,是当前月球科学研究的重要目标之一.2009年10月9日,美国半人马座火箭和卫星相继撞击月球南极Cabeus撞击坑,证实了月球极地水冰的存在,但对其含量、分布范围等的研究还有争议.极地水冰的存在会改变极地月壤的介电常数,而微波辐射计是获取介质介电常数的最有效的工具.因此,根据37GHz频率条件下的月壤被动微波辐射传输数值模拟结果,改进月壤辐射传输模型.对比分析了Odelevsky模型、Wagner和Landau-Lifshitz模型、Clausius模型等8个常用的混合介电常数计算模型,表明Lichtenecker模型与改进的Dobson模型得到的介电常数值相差最大,折射模型得到的结果偏大,Odelevsky模型、强起伏定理与Wagner和Landau-Lifshitz模型、Clausius模型、Bruggeman-Hanai模型得到的结果非常接近.基于Odelevsky模型和改进的月壤辐射传输模拟,建立了月壤体积含冰量与微波辐射亮温的关系.并根据嫦娥一号卫星获取的相应的微波辐射计数据,进行了Cabeus撞击坑水冰含量反演研究.结果表明,改进的辐射传输模型适用于高频条件下的一层月壤辐射传输模拟;月球南极Cabeus撞击坑地区月壤微波辐射亮温为69.93K(37GHz),相应的体积含冰量约为2.8%. | 孟治国 陈圣波 Edward Matthew Osei Jnr 汪自军 崔腾飞 | 2010 | 中国科学:物理学、力学、天文学2010，40，11： | 5 |
| 2 | Research on water ice content in Cabeus crater using the data from the microwave radiometer onboard Chang’e-1 satellite显示文摘The existence, formation and content of water ice in the lunar permanently shaded region is one of the important questions for the current Moon study. On October 9, 2009, the LCROSS mission spacecraft impacted the Moon, and the initial result verified the existence of water on the Moon. But the study on formation and content of water ice is still under debate. The existence of water ice can change the dielectric constants of the lunar regolith, and a microwave radiometer is most sensitive to the dielectric parameters. Based on this, in this paper, the radiation transfer model is improved according to the simulation results in high frequency. Then the mixture dielectric constant models, including Odelevsky model, Wagner and landau-Lifshitz model, Clau-sius model, Gruggeman-Hanai model, etc., are analyzed and compared. The analyzing results indicate that the biggest difference occurs between Lichtenecker model and the improved Dobson model. The values estimated by refractive model are the second biggest in all the models. And the results from Odelevsky model, strong fluctuation model, Wagner and Landau –Lifshitz model, Clausius model and Bruggeman-Hanai model are very near to each other. Thereafter, the relation between volume water ice content and microwave brightness temperature is constructed with Odelevsky mixing dielectric model and the improved radiative transfer simulation, and the volume water ice content in Cabeus crater is retrieved with the data from microwave radiometer onboard Chang’e-1 satellite. The results present that the improved radiative transfer model is proper for the brightness temperature simulation of the one infinite regolith layer in high frequency. The brightness temperature in Cabeus crater is 69.93 K (37 GHz), and the corresponding volume water ice content is about 2.8%. | MENG ZhiGuo 1 , CHEN ShengBo 1* , Edward Matthew OSEI Jnr 2 , WANG ZiJun 1 & CUI TengFei 1 1 College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China 2 Department of Geomatic Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，12： | 4 |
| 3 | Influence of Temperature and Frequency on Microwave Dielectric Properties of Lunar Regolith Simulant显示文摘The dielectric constant of the lunar regolith can directly influence the reflection coefficient and the trans-mission coefficient of the Moon′s surface, and plays an important role in the Moon research. In order to study the di-electric properties of the lunar regolith, the lunar regolith simulant was made according to the making procedure of the CAS-1 simulant made by Chinese Academy of Sciences. Then the dielectric constants of the lunar regolith simulant were measured with 85070E Aiglent Microwave Network Analyzer in the frequency ranging from 0.2 GHz to 20.0 GHz and at temperature of 25.1℃, 17.7℃, 13.1℃, 11.5℃, 9.6℃, 8.0℃, 4.1℃, -0.3℃, -4.7℃, -9.5℃, -18.7℃, -27.7℃, and -32.6℃, respectively. The Odelevsky model was employed to remove the influence of water in the air on the final effective dielectric constants. The results indicate that frequency and temperature have apparent influences on the dielectric constants of the lunar regolith simulant. The real parts of the dielectric constants increase fast over the range of 0.2 GHz to 3.0 GHz, but decrease slowly over the range of 4.0 GHz to 20.0 GHz. The opposite phenomenon occurs in the imaginary parts. The influences of the frequency and temperature on the brightness temperature were also estimated based on the radiative transfer equation. The result shows that the variation of the frequency and temperature results in great changes of the microwave brightness temperature emitting from the lunar regolith. | MENG Zhiguo CHEN Shengbo DU Xiaojuan EDWARD Matthew Osei Jnr LU Peng WANG Zijun | 2011 | Chinese Geographical Science2011，21，1： | 3 |
| 4 | Sorption of Manganese (II) and Chromium (III) Ions from Aqueous Solution Using Water Hyacinth Biomass (Eichhornia crassipes)显示文摘 | T. Tarawou D. Wankasi M. Horsfall Jnr | 2010 | Journal of Environmental Science and Engineering2010，4，11： | 3 |
| 5 | Coronary artery bypass grafting without cardiopulmonary bypass 显示文摘 | BUFFOLO E DE ANDRADE JCS BRANCO JNR | 1996 | Ann Thorac Surg1996，61，： | 1 |
| 6 | Coronary artery bypass grafting without cardiopulmonary bypass显示文摘 | Buffolo E de Andrade JCS Branco JNR | 1996 | Ann Thorac Surg1996，61，： | 1 |
| 7 | Coronary artery bypass grafting with cardiopulmonary bypass显示文摘 | Buffolo E de Andrade JCS Branco JNR | 1996 | Ann Thorac Surg1996，61，： | 1 |
| 8 | Coronmy artery bypsass grafting without cardiopulmonary bypass 显示文摘 | Buffalo E de Andrade JCS Branco JNR | 1996 | Ann Thorac Surg1996，61，： | 1 |
| 9 | Intestinal absorption of proteins hydrolysis products:a review显示文摘 | Webb Jnr K E | | 0，，： | 1 |
| 10 | In vitro remineralization of enamel by polymeric amorphous calcium phosphate composite:Quantitative microradiographic study显示文摘 | Langhorst SE O' Donnel JNR Skrtic D | | 0，，07： | 1 |
| 11 | Coronary artery bypass grafting without cardiopulmonary bypass显示文摘 | Buffolo E Andrade J Branco JNR | 1996 | Ann Thorac Surg1996，61，1： | 1 |
| 12 | Coronary artery bypass grafting without cardiopulmonary bypass显示文摘 | de Andrade JCB Branco JNR | 1996 | Ann Thorac Surg1996，61，1： | 1 |
| 13 | A review of digital ra- dio logical methods显示文摘 | HALMSHAW R RIDVARD JNR | 1990 | Brit J NDT1990，32，1： | 1 |
| 14 | Coronary artery bypass grafting without cardiopulmonary bypass显示文摘 | de Andrade JCS Branco JNR | 1996 | Ann Thorac Surg1996，61，1： | 1 |
| 15 | Differentiation of murine macrophages to express nonspecific cytotoxicity for tumor cells results in L-arginine- dependent inhibition of mitochondrial iron-sulfur enzymes in the macrophage effector cells 显示文摘 | JC Drapier JB Hibbs Jnr | 1998 | Immunol1998，140，8： | 1 |
| 16 | Coronary artery hypass grafting without cardlopulmonary bypass显示文摘 | Bufflo E Andrade J Branco JNR | 1996 | Ann Thorac Surg1996，61，1： | 1 |
| 17 | Coronary artery bypass grafting without cardiopulmonary bypass显示文摘 | De Andrade JCS Branco JNR | 1996 | Ann Thorac Surg1996，61，： | 1 |
| 18 | Coronary artery bypass grafting without cardiopulmonary bypass显示文摘 | Buffolo E Anjrade JCS Branco JNR | 1996 | Ann Thorac Surg1996，61，1： | 1 |
| 19 | Off - pump myocardial revascularization:critical analysis of 23 years' experience in 3866 patients 显示文摘 | Bufolo E Branco JNR Gerola LR | 2006 | Ann Thorac Surg2006，81，1： | 1 |
| 20 | Coronary artery bypass grafting without cardiopulmonary bypass显示文摘 | Buffolo E Andrade JCS Branco JNR | 1996 | Ann Thorac Surg1996，61，： | 1 |
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