Analysis of Environmental and Socio-economic Determinants Affecting Population Longevity Level at County Level in China

INTRODUCTIONIn recent thirty years, due to the decreasing fertility andincreasing life expectancy, China's population is aging ata very rapid pace and the elderly population size is keepingon growing. During the dramatic aging progress, the oldestold group in China is catching our eyes. More and moreold people of China are becoming the oldest old. Theextremely old population (aged 80 and above) is increasingat 5.1% annually, while the old population above 65 isincreasing at 2.9%, and the…     

Association between short-term exposure to ambient air pollution and number of outpatient Helicobacter pylori infection visits

Environmental Science and Pollution Research - Helicobacter pylori infection (HPI) is an important risk factor of gastrointestinal diseases, but factors leading to it are still not fully...     

Regional Research Capacity-Building in Sustainability Science: Facts,Gaps, and Futures in Northeast Asia

Abstract

Evidence shows that some conceptual ideas relevant to both local and global sustainability have been adopted in some official documents in northeast Asian nations, particularly China, South Korea, and Japan. This seems to be a very positive signal for the future development of sustainability science in this region. However, studyes show that there are still some major gaps there. One is the problem of how to build up the regional research capacity of sustainability science among northeast Asian research institutes across different disciplines as well as different political systems. Another is how to shift the conceptual frameworks of sustainability science into the operational policy frameworks. There are four major obstacles to the enhancement of regional research capacity-building in sustainability science. In order to build up the regional research capacity in sustainability science and to realize both local and global goals of the sustainable development in northeast Asia, this paper proposes some basic frameworks, including regional institutional innovations, establishment of a regional sustainability information network, initiatives of the regional assessment programme, and focus on the regional education and training of sustainability knowledge.     

The performance of nature reserves in capturing the biological diversity on Hainan Island,China

Purpose  

The performance of nature reserves depends on the degree to which they represent a region's full biodiversity. Here, we conducted a study on Hainan Island, China, to assess how well Hainan's biodiversity features were captured by existing nature reserves. We also explored the driving forces behind the current protection pattern so as to provide guidelines for improving the island's conservation system.     

电动力学作用下多溴联苯醚在土壤中的迁移特性

以4,4′-二溴联苯醚(BDE-15)为研究对象,探讨了电极电压、初始土壤pH、β-环糊精加入量、NaCl加入量等工艺条件对多溴联苯醚在土壤中迁移效果的影响。实验结果表明:在电极电压为5~15V范围内,随着电极电压的升高,土壤中BDE-15的迁移效果增强;初始土壤为酸性时、加入β-环糊精或NaCl后,土壤中BDE-15的迁移效果均增强。本实验选择的最佳工作条件为:电极电压15V,初始土壤pH3,β-环糊精的加入量3g,NaCl加入量5g。     

无患子皂苷与柠檬酸协同洗脱污染土壤中镉铅

以某废弃铅锌矿区重金属污染土壤为研究对象,采用无患子皂苷与柠檬酸(CA)协同洗脱污染土壤中的Cd和Pb.以无患子果皮投加量为20 g/L所得水浸提液和浓度为0.3 mol/L的CA配制复配淋洗剂.在浸提液中添加CA后,能有效提高对土壤中Pb的去除率.在浸提液和CA的体积比为1:3、淋洗剂pH为5、淋洗时间为12.0 h...     

Exposure to phthalates in early pregnancy and the risk of fetal growth restriction: a nested case–control study in a Zhuang Chinese population

Environmental Science and Pollution Research - Phthalates (PAEs) are common endocrine disrupting chemicals (EDCs) that disrupt fetal development. The present study aimed to evaluate the effects of...     

城市污水净化的环境效益与环境影响分析

对佛山城市污水净化系统的环境响应和效益预测原则，城市污水净系统正式运转将对佛山水道化纤厂至人民桥段及佛山涌水质有明显改善，其社会效益十分显著，但净化系统的建设交将带来以恶臭、卫生防疫和噪声等方面为主的不利环境影响。因此在城市环境建设中应尽量减少城市污水净化的负面影响，充分发挥其环境效应和社会效益，为城市环境综合整治创造良好的条件。     

基于MMEM的农村社区小微企业事故隐患研究

为了科学有效地提升小微企业事故隐患(AP)排查治理效果,以河北省28个农村社区为例,结合MMEM理论分析和实地调查,揭示了农村社区小微企业存在的事故隐患及其分布特征,进而建立了小微企业事故隐患分类方法。研究结果表明,在农村社区小微企业中存在未进行安全培训、未设置机器设备防护罩、未及时更新设备以及未配备消防设备四类典型的事故隐患,所建立的小微企业事故隐患分类框架是促进农村社区事故风险管控的基础。     

活性炭/铁氧化物复合材料催化降解水中的苯酚

为了获得优良催化性能和分离性的复合材料,通过采用化学共沉淀法,把活性炭和铁氧化物进行复合,制备得到活性炭/铁氧化物复合材料。利用非均相Fenton反应处理模拟苯酚废水,考察了不同因素对苯酚去除率的影响。结果表明,在100 mL 100 mg/L的苯酚模拟废水中,复合材料m=0.1 g,温度为35℃,H2O2投加量为3 mL,pH=3,苯酚的去除率达到99%以上。制备得到的活性炭/铁氧化物复合材料具有磁性,能通过简单的磁分离技术就能快速从溶液中分离出来。通过对复合吸附材料降解稳定性的研究,发现经过5次循环使用后,苯酚去除率均在93%以上,表明其具有良好的循环使用性能。