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111.
Problem on development control of marine source bed hold in Chinese petroleum industry progression. The Hongshuizhuang Formation,Tieling Formation and Xiamaling Formation in the Middle and Upper Proterozoic are important hydrocarbon source beds in northern North China, and investigation of their sedimentary environments and the controls has great significance for petroleum exploration in North China. Based on sedimentology (sequence stratigraphy), palaeoecology, sedimentary geochemistry, and sedimentary palaeogeography, their development pattern is discussed. All these studies indicate that the development controls of the hydrocarbon source beds include a favorite palaeogeographic location, exceeding propagation of biomes in low and middle latitudes, anoxic environments, enrichment of phosphorus element and the adsorption of clay minerals during the preservation of organic matter in the marine carbonates. 相似文献
112.
Development characteristics of interlayer oxidation zone type of sandstone uranium deposits in the southwestern Turfan-Hami basin 总被引:3,自引:0,他引:3
YANG Dianzhong XIA Bin & WU Guogan Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China 《中国科学D辑(英文版)》2004,47(5)
The known uranium ore and anomaly occur-rences are distributed mainly in the southwestern part of the Turfan-Hami basin. The focus of current explo-ration is placed on the leachable interlayered oxidation zone type of sandstone uranium deposits. Uranium deposits in the sedimentary basin can be classified into three types in accordance with their host rock types, i.e. the sandstone-type uranium deposits, the coal rock-type uranium deposits and the mud-stone-type uranium deposits. The sandstone… 相似文献
113.
环境岩土工程研究现状与展望 总被引:5,自引:0,他引:5
小环境岩土工程问题已经逐渐成为环境岩土工程研究的热点问题。笔者对环境岩土工程的研究内容作了简要介绍,简述了国内外在小环境岩土工程研究方面的现状和进展,重点就垃圾卫生填埋问题,特别是沿海软土地区垃圾堆埋场的设计等问题进行了讨论,对国内环境岩土工程的发展提出了一些看法。 相似文献
114.
地理信息系统是国家信息资源的重要组成部分。地理信息技术经过20多年的飞速发展,已经渗透到社会各个方面,促使人们生产、生活方式发生深刻变化。我国地理信息系统(GIS)技术正在向信息化方向发展,并正在逐步成为面向21世纪的支柱产业一信息产业的重要组成部分。国际GIS技术的发展趋势,主要体现在两个方面,一是综合,二是分化。从空间信息处理的角度看,可将GIS的发展分为空间信息的管理、分析、模拟和调控四个阶段。GIS技术的应用表现在一是面向大型项目,二是面向公众。 相似文献
115.
Urban land transformation for pro-poor economies 总被引:1,自引:0,他引:1
Solomon Benjamin 《Geoforum》2004,35(2):177-187
The transformation of land into a setting for clustering local economies can become an important cornerstone of poverty policy. This transformation has several functional aspects, which in turn have important institutional and political aspects. Underlying both the functional and institutional factors is the role of local government and local democracy. Such a conceptualization puts to center stage several paradoxes: A terrain that seems “slum-like” turns out to be highly productive and employment generating. Complex tenure forms and mixed land use seen as “unplanned” turn out to be pre-requisites for economic development. There are institutional paradoxes that contrast efforts at “transparency” and managerial “best practices”. Here, the messiness of local bureaucracies in municipal government turns out to be critical for poor groups to influence interventions in their favor. Influencing the public process may be more effective in stealth-like ways rather taking a more visible approach. Most fundamentally these issues remind us that the potential of cities to reinforce or reduce poverty moved far beyond projects and programs and the normative frameworks used by planners and administrators. Instead, it is the transformative process of turning land into economic settings that might be at the center stage. This is a stage where poor groups are the central actors who stealth-like draw on complex alliances across ethnic and class lines to shapes cities in their interests. 相似文献
116.
Liisa Rohweder 《GeoJournal》2004,60(2):175-181
Environmental education in business school context has a significant effect on the way companies view environmental problems.
Business schools train the future decision makers who can, with their own attitudes and practical actions, influence the contribution
of business to the process of ecologically sustainable development. However, several studies show that no systematic thinking
has been undertaken within business education as to what the educational prerequisites of the process of ecologically sustainable
development are. In this article, I will firstly analyze by means of environmental education how business polytechnics in
Finland have taken into consideration ecologically sustainable development. Secondly, I will raise the starting points for
the development of the implementation of environmental education as part of the business schools▪ educational plans. Integrating
environmental education into the vocational courses is identified as being one of the most effective ways of increasing the
effectiveness of environmental education. Thirdly, the emphasis is on identification of barriers of integrating environmental
education into the educational plans of business polytechnics. Theoretically, the article is attached to the objectives and
learning concepts of environmental education and to educational planning theory in general. The empirical data are based on
interviews I conducted 1999–2000 in all Finnish polytechnics offering business education. My article increases theoretical
and practical understanding of how environmental education should be implemented in business education and how the current
situation could be developed.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
117.
Exploring the attractions of city centre living: evidence and policy implications in British cities 总被引:1,自引:0,他引:1
The British city centre has been the focus of dynamic housing development and repopulation strategies as a key dimension of the government's urban renaissance programme. Through large scale interview surveys in the provincial city centres of Bristol and Swansea, this paper explores the positive and negative features of city centre living, and how these vary amongst a range of social and physical characteristics. The findings suggest that the practical and mundane attractions of city centre living are more important than the more widely publicised lifestyle and cultural attractions of the city centre commonly emphasised in the gentrification literature. Moreover, the research points to differences in attitudes between age groups, with younger adults placing greater value on the range of social and cultural activities in the city centre, whilst older people express high levels of satisfaction with the attractiveness of the environment. A number of policy implications emerge to encourage inclusive marketing strategies within the continued urban renaissance, particularly to challenge the negative perceptions and promote the varied attractions of city centre living to a mix of social groups. 相似文献
118.
Researching the South African tourism and development nexus 总被引:1,自引:0,他引:1
Under apartheid, tourism was essentially anti-developmental in focus and tourism research largely centred on the recreation
of white South Africans. Since the 1994 democratic transition tourism has become recognised as an increasingly important sector
for South Africa's economy and for achieving the government's goals for reconstruction and development. In this paper a review
and critical analysis is presented of the changing directions and foci of tourism scholarship in South Africa. It is shown
that South African scholars are beginning to respond to the challenges posed by tourism as a developmental focus.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
119.
针对目前地热井施工技术现状及地热井使用中常见的问题,进行了较为详细的分析和研究,并就今后发展方向和建议进行了初步探讨。 相似文献
120.