全文获取类型
收费全文 | 277篇 |
免费 | 5篇 |
专业分类
282篇 |
出版年
2023年 | 10篇 |
2022年 | 9篇 |
2021年 | 6篇 |
2020年 | 12篇 |
2019年 | 10篇 |
2018年 | 13篇 |
2017年 | 17篇 |
2016年 | 17篇 |
2015年 | 20篇 |
2014年 | 5篇 |
2013年 | 43篇 |
2012年 | 9篇 |
2011年 | 12篇 |
2010年 | 12篇 |
2009年 | 18篇 |
2008年 | 19篇 |
2007年 | 6篇 |
2006年 | 8篇 |
2005年 | 10篇 |
2004年 | 2篇 |
2003年 | 3篇 |
2002年 | 6篇 |
2001年 | 5篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1983年 | 2篇 |
排序方式: 共有282条查询结果,搜索用时 0 毫秒
41.
以往学界对开埠初期上海租界水环境治理,一般采取填浜筑路的视角,而本文通过对档案资料的考察发现,租界当局对租界内的河浜采取了灵活的治理办法,对于挡路和阻碍市政的死水河浜进行填埋,而对于一般的潮汐河浜和航运河浜采取了清淤、疏通的保护措施,挖掘开通了新河浜,从而使河浜水系的功能得以延续。为了排水需要,租界当局辟建了下水道系统,其治理办法却借鉴于治河方法。 相似文献
42.
Leila M. Harris 《Gender, place and culture : a journal of feminist geography》2009,16(4):387-408
This article provides a critical reading of some of the gendered dimensions of emergent water governance regimes, specifically those related to the privatization, marketization and devolution of water resources management. After first providing an overview of recent nature–society contributions related to neoliberalization processes, the article comparatively evaluates insights with respect to the gender dimensions of recent shifts in water governance. I make several arguments at the intersection of relevant literatures. First, there is a need for gender theorists interested in water resources and nature–society debates to engage more with issues, theories and processes associated with neoliberalization. Second, there is a need for more attention to gender, feminist theory and approaches to inequality and socio-spatial difference in discussions of neoliberalized natures. Third, reading these literatures together reveals that there is a need to be self-reflexive and critical of elements of the gender and water literature that implicitly endorse foundational elements of the neoliberal turn in resource governance. Finally, there are particularities with respect to gender theory and politics, and water materialities that hold importance for understanding recent water governance shifts in the broader context of political and economic changes associated with neoliberalization. 相似文献
43.
Linda Wirf April Campbell Naomi Rea 《Gender, place and culture : a journal of feminist geography》2008,15(5):505-518
The existence of gendered knowledge has been identified as a significant feature of Indigenous Australian culture, and the importance of considering the implications of gendered environmental knowledge in collaborative cross-cultural natural resource management has been highlighted. There is a lack of case studies that demonstrate how Indigenous women's knowledge and laws can be provided for in resource management contexts. From collaborative research with Anmatyerr women in central Australia, we discuss the implications of gender bias in relation to gendered knowledge in natural and cultural resource management, with a specific focus on Anmatyerr women's involvement in providing inputs about the cultural values of water within water allocation planning processes. This research highlights Anmatyerr women's own perspectives of their roles in contemporary contexts and identifies the existence of cultural change and continuity in relation to rights and responsibilities around water. 相似文献
44.
安京 《中国边疆史地研究》2001,10(2):58-66
本根据历史事实对北部湾问题及中国近代海界问题进行了分析,提出了一些值得进一步探讨的观点。认为在历史上海界的概念至少包括以下方面,由自然洋流不同流向划分出的不同海域,自然洋流不具有主权意义;由岛屿、沙洲群划分出的海域,作为界限的岛屿、沙洲群也不具有主权意义;由军事防区划分出的不同海域,其界限都以岛屿群、沙洲群为识别标志。 相似文献
45.
Equations of state for basin geofluids: algorithm review and intercomparison for brines 总被引:1,自引:0,他引:1
Physical properties of formation waters in sedimentary basins can vary by more than 25% for density and by one order of magnitude for viscosity. Density differences may enhance or retard flow driven by other mechanisms and can initiate buoyancy‐driven flow. For a given driving force, the flow rate and injectivity depend on viscosity and permeability. Thus, variations in the density and viscosity of formation waters may have or had a significant effect on the flow pattern in a sedimentary basin, with consequences for various basin processes. Therefore, it is critical to correctly estimate water properties at formation conditions for proper representation and interpretation of present flow systems, and for numerical simulations of basin evolution, hydrocarbon migration, ore genesis, and fate of injected fluids in sedimentary basins. Algorithms published over the years to calculate water density and viscosity as a function of temperature, pressure and salinity are based on empirical fitting of laboratory‐measured properties of predominantly NaCl solutions, but also field brines. A review and comparison of various algorithms are presented here, both in terms of applicability range and estimates of density and viscosity. The paucity of measured formation‐water properties at in situ conditions hinders a definitive conclusion regarding the validity of any of these algorithms. However, the comparison indicates the versatility of the various algorithms in various ranges of conditions found in sedimentary basins. The applicability of these algorithms to the density of formation waters in the Alberta Basin is also examined using a high‐quality database of 4854 water analyses. Consideration is also given to the percentage of cations that are heavier than Na in the waters. 相似文献
46.
47.
本分析了关中地区城镇生活水价现状和问题,得出了城镇生活水价是不可持续的结论,即水价低于供水生产成本,水价结构不合理。在探讨可持续水价的调整原则的基础上,提出了价格杠杆调节关中生活水价的措施,包括:逐步把水价调整到成本水价以上的水平,并调整水价结构,使之能反映供水成本和水资源价值;实行累进加价制度,对超定额用水征收高水价;实施季节性水价等。 相似文献
48.
试论夏商城市水利设施及其功能 总被引:2,自引:0,他引:2
本文就考古所见夏商城址内的水利遗存进行了分析,对夏商城市水利设施的种类、功能、渊源等相关问题进行了初步探讨。 相似文献
49.
50.
Sophie Louise Power 《亚洲研究评论》2017,41(2):209-226
Human rights-based approaches (HRBAs) can challenge the underlying structures and power relations that perpetuate poverty. They have thus emerged in the development field as a prominent instrument for addressing development issues. Access to clean water and sanitation are now internationally acknowledged as human rights, and have become a stand-alone Sustainable Development Goal of the international community’s commitment to international development. This paper analyses the potential use of HRBAs by local Non-Governmental Organisations (NGOs) working on sanitation issues in slums in Mumbai. It is argued that it is more productive for local NGOs to build (i) partnerships with duty-bearers (in this case the state and the Municipal Corporation of Greater Mumbai) and (ii) the capacity of rights-holders, in particular women, than to rely on litigation strategies to create momentum for change. HRBAs are more useful as a political tool for NGOs for establishing good working relationships with government agencies rather than as a legal instrument, which can be counter-productive to the poverty reduction objectives of NGOs. 相似文献