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131.
132.
Bei Zhang 《中国人口.资源与环境(英文版)》2013,11(1):87-91
It was the first time that the Intergovernmental Panel on Climate Change(IPCC),which was founded in 1988,regarded climate change as a significant international political problem(O’Brien and Williams 2007).Over the next decades,environmentalist and policy makers have been applying many efficient ways to solve various environmental problems and have gained achievements.With the support of successful cases,this paper will focus on the market-based solutions and discuss its advantages compared with the conventional approach. 相似文献
133.
用柠檬酸法制备了铈锆固溶体负载不同量LaCoO3的催化剂。用热重法测试了催化剂样品对碳烟的催化活性。采用程序升温还原法(H2-TPR)、BET、X-射线衍射仪(XRD)和X-射线光电子能谱仪(XPS)对催化剂进行了测试。结果表明,铈锆固溶体表面形成了稳定的LaCoO3钙钛矿相结构;负载量为30%LaCoO3的催化剂具有最高的催化活性,起燃温度降到530℃;催化剂的催化活性与催化剂还原峰强度以及催化剂表面氧物种OII的含量紧密相关。 相似文献
134.
邱明琦 《再生资源与循环经济》2013,(11):19-23
在再生资源回收利用已成为大力推进生态文明建设重要内容的新形势下,着眼于这项工作更好地服务于经济与社会又好又快发展,提出行业目前存在的7个方面的突出问题和解决问题的10项对策,与相关部门和业内人士进行研讨. 相似文献
135.
考察N910、Lix84-I、N902和RE609 4种不同类型的萃取剂从高浓度铜氨溶液中萃取铜的效率,选取萃取效果较好的N910作为重点研究对象,并研究其从铜氨溶液萃取铜的萃取性能。实验发现,N910具有萃取速率快、饱和容量高、分离效果好、反萃完全及不易萃氨等特点;并用80%N910+煤油溶液,在pH=9.5,温度25℃,相比(O/A)1∶1条件,进行真实料液萃取实验,振荡10 min,萃取中铜离子的浓度达到69.66 g/L。因此,N910能够作为一种高效的铜萃取剂,从碱性蚀刻废液中回收铜。 相似文献
136.
Niki Frantzeskaki Cathy Oke Guy Barnett Sarah Bekessy Judy Bush James Fitzsimons Maria Ignatieva Dave Kendal Jonathan Kingsley Laura Mumaw Alessandro Ossola 《Ambio》2022,51(6):1433
Australia is experiencing mounting pressures related to processes of urbanisation, biodiversity loss and climate change felt at large in cities. At the same time, it is cities that can take the leading role in pioneering approaches and solutions to respond to those coupling emergencies. In this perspective piece we respond to the following question: What are the required transformations for prioritising, valuing, maintaining and embracing nature in cities in Australia? We adopt the mission framework as an organising framework to present proposed pathways to transform Australian cities as nature-positive places of the future. We propose three interconnected pathways as starting actions to steer urban planning, policy and governance in Australian cities: First, cities need to establish evidence-based planning for nature in cities and mainstream new planning tools that safeguard and foreground urban nature. Second, collaborative planning needs to become a standard practice in cities and inclusive governance for nature in cities needs to prioritise Aboriginal knowledge systems and practices as well as look beyond what local governments can do. Third, for progressing to nature-positive cities, it is paramount to empower communities to innovate with nature across Australian cities. Whilst we focus on Australian cities, the lessons and pathways are broadly applicably globally and can inspire science-policy debates for the post COP15 biodiversity and COP26 climate change implementation processes. 相似文献
137.
2019年9月召开的联合国气候行动峰会,确定自然解决方案为应对全球气候变化的重要行动领域,并由中国和新西兰担任牵头国家。近10年,自然解决方案理念发展迅速,联合国环境规划署和世界自然保护联盟等呼吁将自然解决方案作为实现全球可持续发展的核心手段,并提出了具有指导意义的相关标准。本文介绍了自然解决方案的概念、历程与标准,列举了自然解决方案在气候变化、流域修复、生物多样性保护和粮食安全等领域的应用案例,从标准规范、工程管理、体系建设等维度对自然解决方案与我国生态文明建设进行比较,最后提出了有效融合自然解决方案与我国生态文明建设的7条建议。 相似文献
138.
论多媒体英语教学 总被引:1,自引:0,他引:1
左靖 《中国环境管理干部学院学报》2008,18(4)
多媒体英语教学把传统英语教学的单调形象转化为动感形象,国内经济社会的发展也需要多媒体英语教学的展开。本文针对英语教学中存在的主要问题:缺乏人际交流、弱化学生主体地位、弱化教师主导作用,提出相关的教学对策:加强英语教学软件的开发与利用,精心设计和制作课件;熟练掌握教学内容;将传统教学媒体与多媒体课件紧密结合;树立对多媒体英语教学的正确认识。 相似文献
139.
Removal of cadmium from aqueous solutions using 20 species of plant leaves and combinations of these leaves have been studied. Several factors affecting the removal efficiency have been studied. The most efficient types of plant leaves for the removal of cadmium are those of styrax, plum, pomegranate and walnut. The interaction effect of the combined leaf samples on the efficiency of removal of cadmium has been found to be additive in combinations involving styrax plant leaves but seems to be antagonistic in all other combinations. The optimum experimental conditions for removal of cadmium have been found to be at pH 4.1, using high concentrations of naturally dried plant leaves, using ground leaves and to remove cadmium from agitated aqueous solutions. The percentage of metal removed at an initial cadmium concentration of 10mg/l by the most efficient types of leaves have been found to be 85% for styrax leaves, 85% for plum leaves, 80% for pomegranate leaves, 78% for walnut leaves and 77% for meddler leaves. The presence of foreign ions or complexing agents has been found to reduce the efficiency of removal of cadmium by plant leaves. About 80-85% of the cadmium in charged plant leaves has been released under the influence of changing the pH of the solution, addition of competing ions and the addition of EDTA. The results of removal of cadmium by plant leaves have been found to follow the Freundlich adsorption isotherm, first-order reaction with respect to cadmium and to have intra-pore diffusion as the rate-limiting step. 相似文献
140.
Graciela M. Rusch Jesamine Bartlett Magni Olsen Kyrkjeeide Ulrika Lein Jenni Nordn Hanno Sandvik Hkon Stokland 《Ambio》2022,51(6):1459
Climate change has considerably dominated science-policy dialogue, public debate, and subsequently environmental policies since the three “Rio Conventions” were born. This has led to practically independent courses of action of climate change mitigation and biodiversity conservation actions, neglecting potential conflicts among outcomes and with missed opportunities for synergistic measures. Transformative governance principles have been proposed to overcome these limitations. Using a transformative governance lens, we use the case of the Norwegian "Climate Cure 2030" for the Land Use, Land-Use Change and Forestry (LULUCF) sector to, first, illustrate the mechanisms that have led to the choice of climate mitigation measures; second, to analyze the potential consequences of these measures on biodiversity and greenhouse gas (GHG) emissions; and, third, to evaluate alternative measures with potential positive outcomes for biodiversity and GHG emissions/removals. We point to some mechanisms that could support the implementation of these positive actions.Supplementary InformationThe online version contains supplementary material available at 10.1007/s13280-021-01679-8. 相似文献