环境监测点位“组合校验码”编码模型及编码管理系统设计

分析了环境监测点位编码管理中存在的问题,提出科学合理的编码应该是具有科学性、唯一性、稳定性、简明性、规范性、可扩展性等特点。设计了一种简单"组合校验码"模型来适应不同环境要素类型的环境监测工作需要。同时,设计了一套覆盖各层级环境监测机构,各种环境要素类型,适应市场化监测服务,满足不同点位管控类别的编码管理系统来支撑"组合校验码"模型的使用,通过该系统可以有效解决环境监测数据集成程度低、共享困难等问题。     

Numerical simulation of stratified turbulent two phase flow in aquatic environment

Ｉｎｅｓｔｕａｒｙ,ｄｅｎｓｉｔｙｓｔｒａｔｉｆｉｅｄｆｌｏｗｅｘｉｔｓｗｉｄｅｌｙｂｅｃａｕｓｅｆｒｅｓｈｗａｔｅｒｊｏｉｎｓｉｎｔｏｓｅａｗａｔｅｒａｎｄｔｈｅｄｅｎｓｉｔｙｏｆｆｒｅｓｈｗａｔｅｒｉｓｄｉｆｆｅｒｅｎｔｆｒｏｍｔｈａｔｏｆｓｅａ?..     

Formation and harmfulness of high fluoride-bearing ground-water

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｓｏｍｅｓｐｅｃｉａｌｇｅｏｍｏｒｐｈｉｃ,ｇｅｏｌｏｇｉｃａｌ,ｌｉｔｈｏｇｅｏｃｈｅｍｉｃａｌａｎｄｈｙｄｒｏｇｅｏｃｈｅｍｉｃａｌｅｎｖｉｒｏｎｍｅｎｔ,ｔｈｅｇｒｏｕｎｄｗａｔｅｒａｎｄｓｏｉｌｉｎｓｏｍｅａｒｅａｓ?..     

Filtration improvement of zinc sludge by using unconventional alkalization sequence

ＩｎｔｒｏｄｕｃｔｉｏｎＺｉｎｃｉｓｏｎｅｏｆｔｈｅｍｏｓｔｉｍｐｏｒｔａｎｔｍｅｔａｌｓｉｎｍｏｄｅｒｎｉｎｄｕｓｔｒｙａｎｄｈａｓｂｅｅｎｕｓｅｄｗｉｄｅｓｐｒｅａｄｌｙ.Ｍｏｓｔｏｆｔｈｅｚｉｎｃｍｅｔａｌｓｉｎｔｈｅｗｏｒｌｄｉｓｐｒｏｄｕｃ?..     

Treatment of manganese wastewater from titanium dioxide plant using complex phosphate

ＩｎｔｒｏｄｕｃｔｉｏｎＵｓｉｎｇｃｏｍｐｌｅｘｐｈｏｓｐｈａｔｅｔｏｔｒｅａｔｍａｎｇａｎｅｓｅｗａｓｔｅｗａｔｅｒｆｒｏｍｔｉｔａｎｉｕｍｄｉｏｘｉｄｅｐｌａｎｔｗａｓｐｒｅｓｅｎｔｅｄｉｎｔｈｉｓｐａｐｅｒ.Ｃｏｍｐａｒｉｎｇｗｉｔｈｏｔｈｅｒ?..     

Application of GIS technology in chemical emergency response

ＩｎｔｒｏｄｕｃｔｉｏｎＣｏｕｎｔｌｅｓｓｉｎｃｉｄｅｎｔｓｉｎｖｏｌｖｉｎｇｈａｚａｒｄｏｕｓｃｈｅｍｉｃａｌｓｈａｖｅｈａｐｐｅｎｅｄａｌｌｏｖｅｒｔｈｅｗｏｒｌｄ,ａｎｄｔｈｅｙａｒｅｏｃｃｕｒｒｉｎｇｏｒｗｉｌｌｏｃｃｕｒｅｖｅｒｙｗｈｅｒｅ...     

Effect of organophosphorus pesticide pollution on soil animals

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｓｔｕｄｙｏｆｍｏｄｅｒｎｓｏｉｌｚｏｏｌｏｇｙｈａｓｅｎｔｅｒｅｄｉｎｔｏａｓｔａｇｅｏｆｂｉｏｌｏｇｉｃａｌｐｒｏｄｕｃｔｉｖｉｔｙａｎｄｔｈｅｒｅｌａｔｉｏｎｂｅｔｗｅｅｎｈｕｍａｎａｎｄｅｎｖｉｒｏｎｍｅｎｔ.Ｐ?..     

Company engagement with supply chains to protect biodiversity and rare,threatened, and endangered species

Future global megatrends project a population increase of 2 billion people between 2019 and 2050 and at least 1–2 billion people added to the global middle class between 2016 and 2030. In addition, 68% of the world's population is projected to be living in urban areas by 2050. With these projected large population increases and shifts, demand for food, water, and energy is projected to grow by approximately 35, 40, and 50%, respectively, between 2010 and 2030. In addition, between 1970 and 2014 there was an estimated 60% reduction in the number of wildlife in the world and an estimated net loss of 2.9 billion birds, or 29%, in North America between 1970 and 2018. Loss of species populations and number of species is interconnected with reduced health of biodiversity and ecosystems. Human activity has been the main catalyst for these substantial declines primarily through impacts on habitats. These losses are accelerating. Since a company's supply chain environmental impacts are often as great or greater than its own direct environmental impacts, it may be prudent for companies to engage with their supply chains to protect and enhance habitats and biodiversity and protect rare, threatened, and endangered species. As one example, companies may have opportunities and strategic reasons to include requirements in their supplier codes of conduct and supplier standards for suppliers to protect biodiversity and rare, threatened, and endangered species, as well as additional requirements to expand or enhance habitats and ecosystems to increase biodiversity. This article follows one pathway that companies could pursue further and with greater speed—to engage with their supply chains to strengthen supplier codes of conduct to protect biodiversity and rare, threatened, and endangered species. The importance of forests, private land, and landscape partnerships is discussed as means to protect much more of the planet's biodiversity and rare, threatened, and endangered species. Lastly, the article identifies examples of opportunities for companies to more formally incorporate biodiversity into their business, supply chain, and sustainability strategies.     

基于颗粒流数值方法的岩石压剪破坏细观特征研究

压剪破坏是影响岩体工程安全的主要因素,基于颗粒流程序的伺服控制原理,采用等效晶质模型模拟了粉砂质板岩的压剪破坏过程,通过与室内试验对比验证了其适用性,并从细观角度揭示了岩石在压剪过程中的破坏机理。结果表明:裂纹增长速率与试件压剪过程中经历的弹性、塑性和破坏3个阶段具有相关性;张拉、剪切裂纹呈同步增长趋势,但峰后张拉裂纹增长速率快于剪切裂纹,即试件峰后以张拉破坏为主;随剪切角增大,由沿晶和穿晶断裂向以沿晶断裂为主转变,裂纹数量减小且扩展方向向断裂面集中;穿晶断裂的扩展更容易导致局部失稳,即在宏观上表现为塑性阶段;穿晶裂纹主要沿断裂面扩展、贯通,一定程度上可以抑制断裂面附近较大破裂块体的产生。     

Scaling down the “Netherlands Fallacy”: a local-level quantitative study of the effect of affluence on the carbon footprint across the United States

Much quantitative research examining the determinants of the ecological footprint has been conducted cross-nationally, where data on cross-boundary flows have been readily available. While local-level studies of the footprint do exist for specific localities, most quantitative research at this scale has examined direct environmental impacts attributed to the internal activities of the locality, for instance, carbon emissions. Our analysis builds on this previous work by exploiting a local-level carbon footprint dataset with coverage for 28,321 zip codes across the United States. Following prior research, we focus on the effect of local affluence, measured in terms of median household income. In spatial regression models, we regress the per capita carbon footprint on local affluence, controlling for a variety of other factors. Consistent with previous work, we find that affluence is positively correlated the carbon footprint and there is no evidence of an environmental Kuznets curve. In the conclusion, we review the results of the study and discuss their implications for policy, specifically in terms of cross-boundary environmental problems.