云南天文台学位研究生招收培养简况     

The Division of Personnel  Yunnan Observatory  The Chinese Academy of Sciences  Kunming  China) 《天文研究与技术》2001,(4)

云南天文台 1 984年经国务院学位办批准获天体物理专业博士、硕士学位授予权 ;1 994年获天体测量与天体力学专业硕士授予权 ;1 990年获天文仪器与方法专业硕士授予权 ;1 997年专业调整 ,天文学一级学科含天体物理、天体测量与天体力学两个专业。本台自 1 982年招收硕士研究生 ,迄今为止 ,共招收硕士生 1 9届 1 0 3人 ,毕业 80人 ,授学位 83人 (含在职人员申请学位 3人 ) ,现在学 1 8人 ;自 1 986年招收博士生 1 4届 68人 ,毕业 2 6人 ,授学位 2 7人 ,现在学 3 6人 (含院省合作、委托培养 ,及在职人员申请学位 1人 )。云南天文台毕业硕士、博…  相似文献   

大型金属矿山深边部找矿思路和方法浅析     

吴烈善  彭省临 《矿产与地质》2004,18(5):480-483

针对我国目前金属矿山资源供应形势十分严峻的局面,强调开展大型金属矿山深边部找矿工作的重要性和迫切性。本文从国内外大型金属矿山找矿发展现状、大型矿山深边部找矿的研究方法等几个方面,阐述了大型金属矿山找矿工作的现状和技术方法组合研究,并在此基础上,探讨了矿山成矿预测的存在问题和发展趋势。  相似文献   

我国电气石资源分布、地质特征及其开发利用前景分析   总被引：8，自引：1，他引：7  

李赋屏  彭光菊  卢宗柳  陈大经 《矿产与地质》2004,18(5):493-497

电气石因具有压电性、热电性、存在自发永久电极及具较高的红外辐射能力等特征,在日本、美国、韩国等国家已开发出相应的系列产品,应用于环境保护、保健及电子工业领域。文章在系统查阅国内文献的基础上,初步分析了我国电气石资源概况及地质特征,指出我国的电气石矿产具有资源较丰富、分布较广泛又相对集中的特点。文中还介绍了国内外电气石研究开发现状,指出电气石将成为21世纪的新型功能性材料,提出了我国电气石开发利用对策。  相似文献   

地球质心偏移与各圈层形变     

杨学祥  王莉 《大地测量与地球动力学》1995,(4)

地幔结构的地震层析图象显示热心南偏和质心北偏可能是地球南北反对称的动力基础。建立了南北半球密度反对称分布的数学模型，计算结果表明：地壳地幔南北半球的密度不均匀分布可使地核偏离地球质心１～３公里，完全符合张焕志１９８２年的计算结果。质心偏移将造成地球各圈层相同数量级的等位移动与等位变形，从而产生大幅度的全球海平面变化和地壳形变。  相似文献   

BOOK REVIEWS     

《The Professional geographer》1985,37(3):357-389

Book Reviewed in this article: Redundant Spaces in Cities and Regions? Studies in Industrial Decline and Social Change . J. Anderson, S. Duncan and R. Hudson. eds. The Social Consequences and Challenges of New Agricultural Technologies . Gigi M. Berardi and Charles C. Geisler, eds. Determinants of Fertility in Developing Countries, Vol. I, Supply and Demand for Children . Rodolfo A. Bultao and Ronald D. Lee, eds. Computer Mapping: Progress in the‘80s . James R. Carter. Washington: Colonial Africa . A. J. Christopher. Geography of the Soviet Union . J. P. Cole. Chicago Mapmakers, Essays on the Rise of the City's Map Trade . Michael P. Conzen, ed. Changes in the Land: Indians, Colonists and the Ecology of New England . William Cronon. Mizner's Florida: American Resort Architecture . Donald W. Curl. Geographical Studies on the Soviet Union: Essays in Honor of Chauncy D. Harris . George Demko and Roland J. Fuchs, eds. Fluvial Hydrology . S. Lawrence Dingman. Pueblo Indian Water Rights: Struggle For a Precious Resource . Charles T. DuMars, Marilyn O'Leary and Albert E. Utton. Women in the Cities of Asia: Migration and Urban Adaptation . James T. Fawcett, Siew-Ean Khoo, and Peter C. Smith, eds. America's National Parks and Their Keepers . Ronald A. Foresta. Neighborhood Revitalization and the Postindustrial City . Dennis E. Gale. China in Canada: A Dialogue on Resources and Development . R. Louis Gentilcore, ed. China: The 80s Era . Norton Ginsburg and Bernard A. Lalor, eds. Boulder, CO: Global Resources: Challenges of Interdependence . Martin I. Glassner, ed. River Networks . Texas: A Geography . Terry G. Jordan with John L. Bean, Jr. and William M. Holmes. The American Frontier: An Archaeological Study of Settlement Pattern and Process . Kenneth E. Lewis. Water Resources, Geography and Law . Olen Paul Matthews. A Field Guide to American Houses . Virginia and Lee McAlester. Population: Patterns, Dynamics, and Prospects . James L. Newman and Gordon E. Matzke. Wood, Brick, and Stone, The North American Settlement Landscape, Vol. 1: Houses . Allen G. Noble. Historical Analysis in Geography . William Norton. The Displaced Worker and Community Response: Case Study of Portsmouth, Scioto County, Ohio . H. Milton Patton and Janet W. Patton. Disaster Management: Warning Response and Community Relocation . Ronald W. Perry and Alvin H. Muskatel. The Anthropology of Space: Explorations into the Natural Philosophy and Semantics of the Navajo . Rik Pinxten, Ingrid van Dooren, and Frank Harvey. What STYLE Is It? A Guide To American Architecture . John C. Poppeliers, S. Allen Chambers, Jr., and Nancy B. Schwartz. Appalachia: A Regional Geography—Land, People and Development . Karl Raitz and Richard Ulack. An Introduction to Urban Geography . John R. Short. Ford, A Village in the West Highlands of Scotland: A Case Study of Repopulation and Social Change in a Small Community . John B. Stephenson. Income and Jobs: USA Diagnosing the Reality . George Sternlieb and James W. Hughes. Weather and Climate of the Antarctic . W. Schwerdtfeger. History and Ecology: Studies of the Grassland, James C. Malin . Robert P. Swierenga, ed. Optimal Control of Spatial Systems . K. C. Tan and R. J. Bennett. Social Science and Revolutions . Stan Taylor. The Global Textile Industry . Brian Toyne, Jeffrey S. Arpan, David A. Ricks, Terence A. Shimp and Andy Barnett. Integrated Water Development: Water Use and Conservation Practice in Western Colorado . James L. Wescoat, Jr. Proceedings of the First International Symposium on Maps and Graphics for the Visually Handicapped . Joseph W. Wiedel, ed.  相似文献   

煤矿掘进工作面瓦斯涌出规律研究   总被引：3，自引：0，他引：3  

孙树林  周西华  徐军 《中国地质灾害与防治学报》2005,16(1):99-101

煤矿掘进工作面瓦斯涌出一般来说只与直接源瓦斯涌出量的大小有关；而在许多矿井的生产实践中，掘进工作面瓦斯涌出量却显示出与直接源涌出量不一致的特性，常常出现瓦斯涌出异常现象。本文通过对所谓”异常现象”进行观察研究，利用瓦斯监测系统和温度计、气压计对地面的气象状况进行观测，对所获得的数据进行综合分析，找出异常涌出瓦斯的来源、影响因素等，发现瓦斯涌出曲线呈现较为规律变化；经比较发现了与大气物理参数变化的关系。从而找出了掘进工作面的瓦斯涌出规律，即与大气物理参数变化之间的关系。为矿井制定生产规划、合理安排组织生产、减少瓦斯事故、保证矿井安全生产提供参考；在安全管理方面提出有针对性地加强瓦斯检查及其它措施。  相似文献   

生物流化床处理废水的研究进展与展望     

韩苗苗  孔令炜 《地下水》2005,27(5):325-328

介绍了好氧生物流化床与厌氧生物流化床的研究和应用进展,对近年来出现的几种新型生物流化床的研究进展作了介绍,并展望了生物流化床技术的发展方向和应用前景.同时提出了生物流化床在试验研究与应用中尚须解决的问题.  相似文献   

Evidence of women’s empowerment in India: a study of socio-spatial disparities     

Kamla Gupta  P. Princy Yesudian 《GeoJournal》2006,65(4):365-380

Various national and international communities have addressed women’s issues and taken various efforts to empower them so as to enhance their social and health status and involve them in developmental activities. The Indian DHS survey (National Family Health Survey, 1998–1999) provides an opportunity to study women’s empowerment in India. The survey collected information on several dimensions of women’s empowerment from 90,303 ever-married women (ages 15–49), from all the states of India. Utilizing these data sets, four indices – household autonomy index, mobility index, attitude towards gender index and attitude towards domestic violence index – are constructed to measure the different dimensions of empowerment. Using these indices, the spatial and socio-economic and cultural disparities that exist within India are analyzed. Finally, an attempt is made to identify some important determinants for women’s empowerment using multiple logistic regression analysis. The results show that at the national level, 43% of the women have high household autonomy; 23% of the women have high freedom to move outside their home; 40% of the women have no gender preference attitude; and only 43% of the women defy domestic violence. But there are significant divergences in these indices of women’s empowerment across the different states and socio-economic and cultural settings within India. Women’s educational levels emerged as an important predictor for all the four dimensions of women’s empowerment. Additionally, media exposure and age have emerged as the important predictors for some dimensions of woman’s empowerment. This paper was presented by Prof. Kamla Gupta at the International Geographical Union Conference (IGU), held in Canada, 2002.  相似文献   

A comparative study of waste landfill disposal in different countries     

Hongli LI Shenggao CHENG 《中国地球化学学报》2006,25(B08):105-105

This study draws attention to the fact that natural processes can mobilize thallium （Tl）, a highly toxic metal, which may enter the food chain with severe health impacts on the local human population. A rural area having independent Tl mineralization in southwestern Guizhou, China, was chosen for a pilot study. Tl contents of soils extracted by HNO3 in the study area range from 35-165 mg/kg in soils from the mining area, 14-78 mg/kg in alluvial deposits downstream, and 〈0.2-0.5 mg/kg in soils from the background area. Tl contents in ammonium acetate EDTA-extracted fraction are 0.013-1.3 mg/kg, less than 1% of concentration in HNO3-extracted fraction. The amounts of Tl in NH4Ac-extracted fraction were thought to be more exchangeable and bioavailable, i.e., immediately available to plants and/or available to plant roots over a period of years. Tl concentration in crops exhibits species-dependent preferences. The enrichment of Tl in edible crop species decreases in the following order： green cabbage〉chili〉Chinese cabbage〉rice〉com. The highest level of Tl in green cabbage is up to 500 mg/kg （DW）, surpassing the values of Tl in the soils （13-59 mg/kg）. The enrichment factor for TI in green cabbage is up to 1-10 when considering the HNO3-extracted Tl, but the factor highly rises to 30-1300 while considering the NH4Ac-extracted Tl. The average daily uptake of Tl by the local villagers through consumption of locally planted crops was estimated at about 1.9 mg per person, which is 50 times the daily ingestion from the Tl-free background area.  相似文献   

假玄武玻璃的研究进展与现状   总被引：6，自引：0，他引：6  

刘建民  董树文 《地质论评》2001,47(1):64-69

在国外有关假玄武玻璃（pseudotachylite)的研究已经有百余年的历史,在野外产状、显微镜观察和实验模拟等方面积累了丰富的资料。而国内在这方面的研究甚少。近年来,随着人们对“活断层”研究的深入,所谓有“地震化石”之称的假玄武玻璃也日益为研究者们所重视。假玄武玻璃通常认为是与地震断层有关的高应变速率条件下的产物。假玄武玻璃的研究对了解地震时地下深处断层带的变形机制等多方面具有重要意义。尤其是通过模拟假玄武玻璃形成时的相似条件（主要是力学机制和化学机制）,可以了解假玄武玻璃形成时断层剪切带变形历史。为了使国内对这一研究领域感兴趣的学者了解假玄武玻璃的形成过程及其所反映的意义,本文从假玄武玻璃的地质特征及成因等几个方面进行了总结,以飧读者。  相似文献