Prenatal exposure to air pollution and the risk of eczema in childhood: a systematic review and meta-analysis

Environmental Science and Pollution Research - An increasing number of studies investigated the association between air pollution during pregnancy and the risk of eczema in offspring. However, no...     

Integrated toxicity assessment of DEHP and DBP toward aquatic ecosystem based on multiple trophic model assays

Environmental Science and Pollution Research - To comprehensively understand the toxic risks of phthalates to aquatic ecosystems, we examined the acute toxicity of di-(2-ethylhexyl) phthalate...     

Time-dependent recordkeeping fatigue among youth completing health diaries of unintentional injuries

PROBLEM: Increasingly, investigators are asking youth to self-report daily activity patterns and health outcomes in diary studies. This study assesses recordkeeping fatigue with respect to data quality and event reporting among youth participating in a health diary study. METHOD: Unintentional injury data were collected during a 13-week longitudinal diary study of Ohio youth exposed to agricultural hazards. Two analyses were conducted using data from 2000. Analysis 1 examined trends in discernable recordkeeping errors (DREs) over the course of follow-up. Analysis 2 assessed trends in injury reporting over follow-up. RESULTS: The percentage of items containing a DRE showed a slight, non-significant decline throughout follow-up. Injury reporting declined significantly (p<0.001) over follow-up. SUMMARY: There was no compelling evidence of respondent fatigue with respect to DREs. The observed decline in injury reporting is problematic because estimates of youth injury incidence in health diary studies may vary depending upon the length of the follow-up period.     

Geostatistical analysis and kriging of Hexachlorocyclohexane residues in topsoil from Tianjin, China

A previously published data set of HCH isomer concentrations in topsoil samples from Tianjin, China, was subjected to geospatial analysis. Semivariograms were calculated and modeled using geostatistical techniques. Parameters of semivariogram models were analyzed and compared for four HCH isomers. Two-dimensional ordinary block kriging was applied to HCH isomers data set for mapping purposes. Dot maps and gray-scaled raster maps of HCH concentrations were presented based on kriging results. The appropriateness of the kriging procedure for mapping purposes was evaluated based on the kriging errors and kriging variances. It was found that ordinary block kriging can be applied to interpolate HCH concentrations in Tianjin topsoil with acceptable accuracy for mapping purposes.     

“十一五”江苏省地面水域水质污染特征分析

对"十一五"江苏省地面水域水质状况及时空分布特征进行了全面分析,结果表明,"十一五"期间,江苏省地表水水质总体处于轻度污染状态,河流水质呈现较为明显的有机污染特征,影响水质的主要污染物为石油类、氨氮、五日生化需氧量等;主要湖库氮、磷污染较为突出,湖库富营养化问题尚未得到有效控制。水质污染总体表现为枯水期>平水期>丰水期。受社会经济发展影响,地表水质呈现一定的区域流域差异,经济较发达地区水质污染也相对较重。总体来看,"十一五"期间由于加大了产业结构调整与污染防治力度,江苏省地面水域水质污染状况有所改善。     

A framework for policy formulation for small-scale mines: the case of coal in China

The effective management of small-scale mines is one of the major challenges for governments in the mining sector. Small-scale mining may bring tangible, short-term benefits to the communities involved. However, these benefits are frequently outweighed by the costs incurred in terms of illness, injury, pollution, waste of natural resources and market distortions. Governments, international agencies and advisers are generally able to draw up lists of actions which are required to regulate and manage small-scale mines more effectively, but turning plans into sustained action has proved more difficult. Two aspects of policy implementation are crucial to success: the alignment of interests, and the attitude and effectiveness of government. Using a case study of township and village coal mines in China, this article develops an approach to analysing these issues that could assist regional policy makers and advisers in formulating policy, in identifying key obstacles to policy implementation, and in identifying particular parties which need to be infiuenced or educated in order for the policy to succeed.     

非均衡视域下江苏沿海“三极一带多节点”空间发展模式研究

阐述了非均衡发展理论对沿海开发的指导作用,分析了江苏沿海非均衡发展的区域条件,指出了“三极一带多节点”空间发展模式的合理性,提出了实施“三极一带多节点”空间发展模式的战略思考.     

发展长三角地区城市文化旅游路径选择——以发展镇江市隐士文化旅游为例

分析了镇江市隐士文化资源的特质和旅游价值,提出了开发镇江市隐士文化旅游资源、发展城市文化旅游的对策,为长三角地区城市文化旅游发展提供参照样本。     

废物审计中方案筛选和可行性分析

根据技术的复杂程度和系统性，经济效益，削减废弃物的潜力、环境效益、实施难易程度等５个方面，以权重打分综合的方法进行方案筛选，筛选出５个备选方案作经济、技术和环境评估。在此基础上，推存主要工段联合改造方案，并对此方案作出一步经济分析，表明该方案的实施是可行的。     

Removing and recovering gas-phase elemental mercury by Cu(x)Co(3-x)O(4) (0.75< or = x < or =2.25) in the presence of sulphur compounds

The Hg(0) oxidation ability and reusability of Cu(x)Co(3-x)O(4) were investigated in an attempt to improve SO(2) anti-poisoning ability of metal oxide and produce more economic and effective sorbents for the control of Hg(0) emission from combustion processes. The influence of copper content on Cu(x)Co(3-x)O(4)'s (0.75< or = x < or =2.25) oxidation ability of Hg(0) in the presence of SO(2) was investigated. According to the X-ray diffraction, Brunauer-Emmett-Teller (BET) and mass balance analysis on mercury, we found that Cu(1.5)Co(1.5)O(4) showed the highest S(BET) and best Hg(0) oxidation ability. With continuous increase of x from 0.75 to 2.25, Cu(x)Co(3-x)O(4)'s SO(2) anti-poisoning ability increased. The analysis results of the X-ray photoelectron spectroscopy manifested that the adsorptive mercury species on spent Cu(1.5)Co(1.5)O(4) was HgO. The spent Cu(1.5)Co(1.5)O(4) could be regenerated by thermal decomposition at 673K and regenerated Cu(1.5)Co(1.5)O(4) showed higher Hg(0) oxidation ability due to Hg-doping. Regenerated enrichment Hg(0) was collected using activated carbon at an ambient temperature to eliminate the secondary pollution.