Biochemical Cooperation Between Klebsiella oxytoca Sc and Methylobacterium mesophilium Sr for Complete Degradation of Dimethyl Isophthalate

Klebsiella oxytoca Sc and Methylobacterium mesophilicum Sr were isolated from enrichment cultures using dimethyl isophthalate (DMI) as the sole carbon and energy source and mangrove sediment as an inoculum. Complete degradation of DMI required both species of bacteria at different biochemical transformation steps. The biochemical degradation pathway was DMI to monomethyl isophthalate (MMI) by K. oxytoca Sc, MMI to isophthalate (IPA) by M. mesophilium Sr, and IPA by both K. oxytoca Sc and M. mesophilium Sr sequentially. The consortium comprising of K. oxytoca Sc and M. mesophilicum Sr was effective in complete degradation of DMI in eight days. Our results suggest that a consortium of microorganisms indigenous to the mangrove environment is responsible for mineralization of environmental pollutant DMI through biochemical cooperation.     

环境治理中府际合作的逻辑

公共事务的积累只是为制度化解决提供了必要性,当政者维护政权的根本利益需要决定了公共事务处理的优先序列。客观问题的属性和解决的迫切程度只有在政府最高层统治集团认为维系权力存续的手段具备充分的支撑条件时,才会愿意在正式制度上进行调整,为解决问题提供制度供给。新中国成立后很长一段时间内,我国环境问题并不突出,中央政府根据社会主要矛盾需要制定了以发展经济为重心的制度体系。这种制度结构使地方政府和辖区企业形成了利益共容关系。为适应竞争的需要,地方政府庇护辖区企业环境行为,机会主义地执行环境管理制度,使环境问题积累成为影响安全价值的显著因素。在国内外政治压力下,中央政府最终做出了战略调整,地方政府在中央政府制度调控下,自发地合作治理环境问题。     

Citizens’ perceptions of trust relationships in the environmental management process in North Lebanon

This research investigates how trust plays a role in environmental management in North Lebanon, which has suffered repeated episodes of armed conflict in recent times. Previous studies have shown that environmental problems have increased and that the government has been unable to address these, even during periods of relative peace. We examined trust as a factor that contributes to, or hampers, environmental management. Our analysis drew on a survey in 2011 involving 499 citizens. The results demonstrated that, according to citizens, the lack of trust between citizens, and between citizens and the public sector, is a key factor obstructing effective environmental management. The results indicate the level of correlation between how trusting people are; how citizens participate; and how people perceive government legitimacy.     

京津冀污染物跨界输送通量模拟

发展了关键影响因子加权人为源分配方法(WKIF),增添了依赖于气象条件和下垫面类型的生物源,动态更新了气象场和浓度场的边界条件.然后利用WRF-CAMx模式定量给出了四季北京、天津和河北大气边界层中PM2.5、O3、CO、SO2、NO2和NO跨界输送通量和北京净输入或输出通量.结果表明WKIF方法合理反映了中小城市人为源的空间分布特征,模式重要输入参量、初值与边界条件的改进显著改善了WRF-CAMx模式对京津冀地区6个观测站点近地面NOx、O3和PM2.5浓度的模拟.北京向天津冬、春季主要通过西北方向,夏、秋季主要经过偏西方向输入NO、NO2、SO2、CO、O3、PM2.5,输送通量夏季均最小,冬季均最大,且四季北京向天津输入的CO、O3、PM2.5通量显著高于NO、NO2、SO2通量.河北的污染物冬、春季主要通过西北方向,夏季主要经由偏南方向,秋季主要途径偏西方向进入北京;四季北京向河北输入NO和NO2,但跨界输送通量小于20t·d-1;四季河北向北京输入的CO、O3、PM2.5通量远高于北京向河北输送的NO、NO2通量,明显大于北京向河北输送的SO2通量,且河北向北京输入CO、O3、PM2.5通量夏季均最小,冬季均最大;四季北京大气边界层中NO、NO2、SO2最大净输出通量小于50t.d-1,CO、O3、PM2.5净输入或输出通量分别为111～2309、567～6244、715～1778t·d-1.这些定量结果为京津冀区域污染源调控对策的制定提供了科学依据.     

一种部分碳税机制的经济分析

基于目前全球气候变化谈判的困境提出一种部分碳税机制,这种机制与1997年12月缔约国大会第三次会议所形成的京都议定书第12条确立的清洁发展机制（CDM）的雏形清洁发展基金（CDF）有相似的特征,即要求附件Ｉ缔约方为实现公约的目的和体现公约有区别的责任原则,通过实行统一的税收机制并将税收收入转移到发展中国家作为他们在历史过程中过多排放温室气体的自然债务的补偿     

基于知识图谱的国际工程安全管理科研合作研究

为了研究国际工程安全管理在国家（地区）、研究人员的合作现状,基于研究热点与研究前沿的分析结果,对工程安全管理科研合作研究未来的发展趋势进行预测,利用CiteSpace的可视化与统计功能对工程安全管理领域展开研究,得到可视化知识图谱。研究结果表明:国际上关于工程安全管理的研究主要集中在欧美等发达国家,许多国家均与美国建立了合作,而其他国家间的合作较为分散,呈现明显的“无标度”现象; 2003—2017年国际工程安全管理研究的热点领域集中在文化和技术层面; 2003—2017年工程安全管理的研究热点可以分为5个阶段分析,当前的研究热点为施工现场的安全管理及施工前的风险管控。     

“一带一路”战略背景下金属产业国际产能合作研究

随着全球经济发展放缓,金属资源国内需求结构变化,资源约束压力、产能过剩等问题更加突出。如何通过国际产能合作化解金属产业难题是亟待解决的一个现实问题。本文从中国金属产业的现状出发,借鉴美、日产能转移的成功经验,在"一带一路"战略的大背景下探索适合中国金属产业开展产能合作的新模式并提出相应的政策建议。研究认为,中国已成为世界金属生产和消费大国且工业化进入中后期,具有进行国际产能合作的现实需求,"一带一路"战略为中国金属产能国际转移带来了历史契机。这种契机主要表现在沿线国家的基础设施建设热潮带来全球金属资源消费新的增长点,中国主导的"一带一路"战略构建了一种新型地缘政治格局,既能增强中国在沿线国家中的贸易话语权,也为中国开展国际产能合作提供了条件。研究指出,在"一带一路"战略下,中国金属产业的产能转移应以"互利共赢"为基础创新产能合作模式:即以产能合作推动产能转移,达到产业互补经济互惠的目的;以产能输出取代产品输出,有效回避西方国家针对中国的"双反"政策;以基础设施援建消化部分产能,在帮助沿线国家发展基础设施建设的同时消化自身部分富余产能。在合作策略上,应注重六个方面:一是充分利用"一带一路"的战略合作关系;二是实施低端转移高端做强的策略方针;三是全方位开放和深化产能合作;四是开展境外产业园区建设和有色金属精深加工工程;五是大力鼓励民营资本参与;六是创新金属矿业投资模式。     

Combating climate change calls for a global technological cooperation system built on the concept of ecological civilization

Climate change has been considered as the most paramount global environmental problem and the biggest externality throughout the history of human development. Accordingly, the world is facing unprecedented technological innovation and collaborative demands to deal with climate change. In the 2015 Paris Agreement, a long-term vision of technology development and transfer implementation was proposed, and policy and financial support for technological innovation in the area of climate change was advocated. These terms aim to enable developing countries to acquire the necessary technology in the early stage of the technology cycle to address climate change challenge. However, the traditional technological innovation and cooperation mode based on industrial civilization can hardly meet the technical demands of global climate protection. To ensure the continuous development and deployment of technology in a required scale and pace, a new global technical cooperation system is proposed to develop based on the philosophy of ecological civilization. The core contents of this system are supposed be as follows: to implement all-win cooperation targets, adhering to cooperation principles of Eco-man, adopt cooperation content that reflects synergy, pursue cooperation based on mutual trust, encourage participation of multiple actors, and promote sharing of cooperative outputs.     

Organisational challenges in the United Kingdom's post‐disaster ‘crisis support’ work

Local authorities in the United Kingdom are required to ‘lead’ multi‐agency humanitarian responses to major disasters. Concerns mounted in the late twentieth century that responses to people bereaved in the immediate aftermath of such events at best failed to meet their needs and at worst compounded their distress. Subsequent reviews and reforms reframed some victim needs as ‘rights’ and established legal, administrative, and practice frameworks to improve matters. Local authority ‘crisis support’, provided in partnership with other actors, lies at the heart of the UK's contemporary emergency response to the bereaved. Drawing on primary research on the development and the deployment of crisis support in a local authority, and while acknowledging both incident‐ and context‐related difficulties, this paper considers the significance of challenges with their origins in organisational factors. Recent developments within and between responders may exacerbate them. This paper argues, therefore, that further research into such developments is necessary.     

Why trust you? Security cooperation within humanitarian NGO networks

Although the literature is increasingly concerned with cooperation among humanitarian non-governmental organisations (NGOs), we still lack studies that explain cooperation under conditions of competition. Drawing on 22 semi-structured interviews, this article argues that trust is the driving force behind security-related cooperation within networks of humanitarian NGOs. Which type of trust comes into play and how trust is built depends on the structure of a network. In small, stable networks, trust is typically based on experience, whereas shared identity is at the heart of trust in large, unstable networks. In the latter case, cooperation among humanitarian NGOs is exclusive and comparable to a form of club governance, because NGOs are kept out based on their identity—that is, if they adopt a different operational interpretation of the humanitarian principles.