Understanding the patterns and processes underlying water quality and pollution risk in West–Africa River using self-organizing maps and multivariate analyses

Environmental Science and Pollution Research - Rivers are dynamic systems in complex interactions with their surrounding environments. Reliable and fast interpretation of water quality is therefore...     

Blind identification of active landslides in urban areas: a new set of comprehensive criteria

Environmental Science and Pollution Research - More than 70% of catastrophic landslides were previously unknown and brought tremendous losses to human life and property in urban regions; therefore,...     

汞在喜鹊组织和器官中的分布规律

为了确定汞在喜鹊体内8种组织和器官中详细的分布规律,对采自太原南郊区７只喜鹊不同组织和器官中汞的含量进行了测定,并对其分布规律进行了研究。汞在喜鹊体内的分布规律为：肾＞股肌＞肝＞肺＞心＞胸肌＞胸骨＞股骨。经方差分析,组织间及个体间汞的含量均存在显著的差异。汞在喜鹊体内的分布为不均匀分布。肝和心中汞,肺和肾中汞等均具有明昱的正相关。同时,对喜鹊组织和器官中汞含量进行了生态和生理的比较。     

日本废弃物的管理制度与研究现状Ⅲ.日本废弃物的试验分析方法体系(C)产业废弃物的分析方法

本文简要介绍了日本产业废弃物的监测分析方法     

Human PCDD/PCDF levels near a pentachlorophenol contamination site in Tainan, Taiwan

A pentachlorophenol (PCP) manufacturing plant in southern Taiwan discontinued production in 1989. The site of the abandoned plant was heavily contaminated by PCDD/PCDFs, impurities formed in the PCP production process. Serum samples collected from 27 residents living near the deserted plant were evaluated to determine whether this contamination had associated serum levels of PCDD/PCDFs in local residents. The average level of 17 tested congeners ranged from 556 to 5240 pg/g lipid (mean, 1670 pg/g lipid). The corresponding 2,3,7,8-TCDD toxicity equivalent quotient values calculated by international toxicity equivalent factors (I-TEFs) and those recommended by WHO (WHO-TEFs) were 47.2 pg I-TEQ/g lipid and 53.4 pg WHO-TEQ/g lipid, respectively. Levels in other parts of Taiwan typically range from 15 to 20 pg WHO-TEQ/g lipid; therefore, it is likely that the heavily contaminated plant site caused these unusually high serum levels. The average PCDD/PCDF levels of 29 fish-tissue and nine soil samples collected from the sea reservoir surrounding the abandoned PCP plant were also abnormally high: 8630 pg/g lipid (985 pg WHO-TEQ/g lipid) and 606000 pg/g-sample (922 pg WHO-TEQ/g-sample), respectively. Factor analysis indicated that the congener pattern of human serum samples collected from residents living near the abandoned PCP plant different from samples collected from other areas in Taiwan without known PCDD/PCDF pollution. Similar results were observed for the fish tissue and soil samples. The current study may have discovered a "hot spot" for elevated dioxin human exposure in Taiwan. The preliminary finding has raised a public health concern in the inspected area and requires further investigations to clarify the nature of the contamination and potential impact on the local environment and human health.     

Copper recovery from leach solution of waste printed circuit boards by pulse current electrodeposition

Journal of Material Cycles and Waste Management - The copper recovery from waste printed circuit boards is of great significance to protect natural resource and environment. Direct current...     

Preparation of glass–ceramics from blast furnace slag and its heavy metal curing properties

Journal of Material Cycles and Waste Management - High-performance slag glass–ceramics were prepared by melting method using rare earth-containing blast furnace slag as the main raw material...     

Societal implications of a changing Arctic Ocean

The Arctic Ocean is undergoing rapid change: sea ice is being lost, waters are warming, coastlines are eroding, species are moving into new areas, and more. This paper explores the many ways that a changing Arctic Ocean affects societies in the Arctic and around the world. In the Arctic, Indigenous Peoples are again seeing their food security threatened and cultural continuity in danger of disruption. Resource development is increasing as is interest in tourism and possibilities for trans-Arctic maritime trade, creating new opportunities and also new stresses. Beyond the Arctic, changes in sea ice affect mid-latitude weather, and Arctic economic opportunities may re-shape commodities and transportation markets. Rising interest in the Arctic is also raising geopolitical tensions about the region. What happens next depends in large part on the choices made within and beyond the Arctic concerning global climate change and industrial policies and Arctic ecosystems and cultures.     

锅炉量化管理是企业挖潜节能的重要途径

通过对辽河油田公司有关企业开展清洁生产审核,总结出了燃料锅炉量化管理的方法。在自然对流烘干室改造、碱液浓缩炉改造、燃煤锅炉设计效率核准等实例中,该方法可昭示能耗大的"瓶颈"部位,进而为企业制定节能方案、提出具体的节能改造措施提供了科学依据。实践证明:实施锅炉量化管理是企业挖掘节能潜力的重要途径。     

我国工业SO2排放趋势及影响因素分析

分析了我国工业SO2排放量的变化趋势,以及其与GDP、工业产值、火电厂发电量等指标的变化关系;利用50个省市1998—2007年的有关数据建立了SO2排放量的影响因素面板数据模型,力求通过定量分析识别影响我国工业SO2排放量的关键因素。研究表明,我国工业SO2排放量与第二产业比重、火力发电比重并无明显关系,而GDP、发电量、一次能源转化效率、SO2去除率存在显著关系,对SO2工业实际排放量起决定作用的是SO2的去除率。