新农村建设背景下农田水利建设存在的问题和对策

《水利发展规划(2011—2015年)》提出要把水利作为国家基础设施建设的优先领域,农村农田水利将成为水利投入的重点之一。文章通过调查研究将重点放在新农村建设背景下农田水利建设问题上,选取武汉市周边乡镇作为调查对象,分析当前农田水利建设存在的共性问题,进一步深入研究,究其根源,对解决办法作出探讨。     

苏里格气田苏54区块气水分布特征分析

在地层水化学分析、气水层的识别的基础上,对苏里格气田苏54区块气水的分布特征及分布规律开展深入研究。区块东部基本不产水,其余区域均有地层水的存在,并且在一定程度上具有连片分布的特征。2012年在东部筛选不产水的区域集中,Ⅰ+Ⅱ类井比例达到72.0%,平均无阻流量10.6×104m3/d,2口水平井试气均达百万方,开发效果良好。     

岩屑图像录井技术在海拉尔盆地的应用

为提高海拉尔盆地油气水层识别和岩性识别能力,进行了岩屑图像录井技术现场试验。阐述了岩屑图像录井技术的技术原理和特点,并对试验过程中的技术应用效果进行了总结分析,同时进行了经济效益初步评价,为岩屑图像录井技术在海拉尔盆地的推广应用提供可靠依据。     

羰基合成法制取高纯纳米氧化铁工艺研究

纳米氧化铁是近年来研发的新型纳米材料,它具有良好的光学、磁性、催化性能,在涂料、磁性材料、医学磁介质和催化等方面有广泛的应用前景,采用传统技术生产的纳米氧化铁因其粒度分布宽,纯度低等问题无法用于生物医药等高端领域,本文通过实验的方法介绍了一种新型高纯纳米氧化铁生产技术,可为高纯纳米氧化铁的研究和生产提供参考。     

Potential economic impacts of zero thresholds for unapproved GMOs: The EU case

As the pipeline of new biotech crops has continued to expand, regulatory approvals of such crops across different countries have become less synchronized. As a result, some biotech crops can be cultivated in one or more countries but may not be approved for use in others. Under such circumstances, small amounts of unapproved biotech crops can be found in the food/feed supplies of some countries and under zero threshold policies they must be withdrawn and can lead to market disruptions. In this paper we examine the potential economic implications of regulatory asynchronicity and zero threshold policies for unapproved GMOs using the EU as a case study. To measure the potential economic impacts from possible trade disruptions between the EU and its major suppliers of soybeans, we develop a spatial equilibrium model and examine alternative scenarios where bilateral trade flows are set to zero. From our analysis we find that when asynchronous approvals become a systemic problem leading to trade disruptions with multiple trading partners the impacts can be severe. For instance, we find that if the EU were to stop imports from its three main suppliers the US, Brazil and Argentina, it would pay roughly 220% more for soybeans, 211% more for soybean meal and 202% more for soy oil.     

Nutrition,agriculture and the global food system in low and middle income countries

The entire food value chain and diet of low and middle income countries (LMICs) are rapidly shifting. Many of the issues addressed by the nutrition community ignore some of the major underlying shifts in purchases of consumer packaged foods and beverages. At the same time, the drivers of the food system at the farm level might be changing. There is a need for the agriculture and nutrition communities to understand these changes and focus on some of their implications for health. This rapid growth of the retail sector will change the diets of the food insecure as much as that of the food secure across rural and urban LMIC’s. This short commentary contents that current research, programs and policies are ignoring these rapid dynamic shifts.     

一起突发性地表水环境污染监测案例的分析与思考

针对发生在石家庄灵寿县境内的一起突发性地表水环境污染事件,介绍了石家庄市环境监测中心采取的现场勘查、监测、采样和处置等应急处理措施,就建立科学的应急监测管理机制提出建议:1)加强河流跨界交汇断面的监测;2)提高地表水生物监测技术水平;3)组建一支专业的污染事件应急监测队伍。     

水上加油站安全环保风险分析与管理建议

安全和环保是确保水上加油站生产经营稳定的两大基础。文章结合长江内趸船式水上加油站运行管理实践,论述水上加油站特点,辨识水上加油站经营过程中安全环保风险因素,分析水上加油站安全环保管理现状和存在的问题,并提出应对措施和管理建议。     

跨流域长距离调水工程建设管理体制模式研究

在分析跨流域长距离调水工程特点的基础上,提出对跨流域长距离调水工程建设管理体制模式可以采取的四个方案:①项目法人责任制和承包型(非代理型)CM模式相结合的建管体制模式;②项目法人责任制和Partnering(合伙)模式相结合的建管体制模式;③项目法人责任制和Partnering模式+CM模式相结合的建管体制模式;④项目法人责任制和虚拟Part-nering模式+CM模式相结合的建管体制模式,并进行了比较分析。     

提高污水厂带式压滤机处理能力的途径

介绍了某污水处理厂污泥处理系统的组成和带式压滤机工作的特点,通过分析带式压滤机处理能力的影响因素,经过生产运行试验,提出了改变排泥、污泥缓冲池、带式压滤机运行过程的排泥法来降低进泥含水率,总结了改善滤带冲洗效果的方法和控制絮凝剂制配,提高了带式压滤机的处理能力,实践证明有较好的效果。