巨灾定义与划分标准研究——基于近年来全球典型灾害案例的分析

近年来,全球受严重灾害影响的国家和地区频繁出现,导致大量人员伤亡和严重经济损失。巨灾作为区域经济社会可持续发展的主要障碍之一,各国政府以及科技、产业与社会各界人士予以高度重视。目前,国内外对巨灾的研究绝大多数集中于巨灾保险,虽有部分研究涉及到巨灾定义及划分标准,但因研究目的与学术背景不同,至今尚无相对公认的、统一的巨灾定义。对巨灾概念的由来和国内外目前的研究动态进行了较全面的综述,论述了突发性与渐发性巨灾的差异,结合近年来全球典型灾害案例,总结给出巨灾定义、划分指标与标准,并在此基础上对巨灾未来研究进行展望,提出了研究的关键问题并建议进行更深入的研究。旨在为完善区域灾害系统原理,进一步推动巨灾研究提供参考。     

浅谈城市绿化建设

城市绿化是改善城市生态环境,提升城市形象,提高城市居民生活质量的有效途径之一.笔者提出了城市绿化的概念和内涵,提出了城市绿化必须坚持的三个原则:生态原则、坚持景观效应、坚持经济原则,分析了当前我国城市绿化存在的主要问题,并提出了改进的思路和措施.参10.     

试述实习生的工伤事故认定及赔付

从1951年原政务院颁布《中华人民共和国劳动保险条例》始,我国的工伤保险制度几经变革与发展,然而日趋完善的背后依旧存在着诸多问题,2009年7月24日国务院法制办发布了关于修改《工伤保险     

Reinforcing and Toughening Modification of PPC/PBS Blends Compatibilized with Epoxy Terminated Hyperbranched Polymers

Journal of Polymers and the Environment - Polypropylene carbonate (PPC)/polybutylene succinate (PBS) blends were prepared by melt-blending with terminal epoxy-based hyperbranched polymers (EHBP) as...     

An antibiotic composite electrode for improving the sensitivity of electrochemically active biofilm biosensor

• Antibiotic azithromycin employed in graphite electrode for EAB biosensor. • Azithromycin at 0.5% dosage increased the sensitivity for toxic formaldehyde. • Azithromycin increased the relative abundance of Geobacter. • Azithromycin regulated thickness of electroactive biofilm. Extensive research has been carried out for improved sensitivity of electroactive biofilm-based sensor (EAB-sensor), which is recognized as a useful tool in water quality early-warning. Antibiotic that is employed widely to treat infection has been proved feasible in this study to regulate the EAB and to increase the EAB-biosensor’s sensitivity. A novel composite electrode was prepared using azithromycin (AZM) and graphite powder (GP), namely AZM@GP electrode, and was employed as the anode in EAB-biosensor. Different dosages of AZM, i.e., 2 mg, 4 mg, and 8 mg, referred to as 0.25%, 0.5% and 1% AZM@GP were under examination. Results showed that EAB-biosensor was greatly benefited from appropriate dosage of AZM (0.5% AZM@GP) with reduced start-up time period, comparatively higher voltage output, more readable electrical signal and increased inhibition rate (30%-65% higher than control sensor with GP electrode) when exposing to toxic formaldehyde. This may be attributed to the fact that AZM inhibited the growth of non-EAM without much influence on the physiologic or metabolism activities of EAM under proper dosage. Further investigation of the biofilm morphology and microbial community analysis suggested that the biofilm formation was optimized with reduced thickness and enriched Geobacter with 0.5% AZM@GP dosage. This novel electrode is easily fabricated and equipped, and therefore would be a promising way to facilitate the practical application of EAB-sensors.     

Occurrence,distribution, sources,and bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) in multi environmental media in estuaries and the coast of the Beibu Gulf,China: a health risk assessment through seafood consumption

Environmental Science and Pollution Research - The coastal zone is a crucial transitional area between land and ocean, which is facing enormous pressure due to global climate change and...     

Vitamin D mediates the association between acrylamide hemoglobin biomarkers and obesity

Environmental Science and Pollution Research - Mediation analysis aims to discover the role of intermediate variables from exposure to disease. The current study was performed to evaluate how...     

Spatiotemporal dynamics of vegetation in China from 1981 to 2100 from the perspective of hydrothermal factor analysis

Environmental Science and Pollution Research - The increased growth of vegetation has the potential to slow global climate warming. Therefore, analyzing and predicting the response assessment of...     

Near-surface wind profile test based on accuracy verification of UAV anemometer lifting height in an urban fringe built-up area

Environmental Science and Pollution Research - Multirotor UAVs (unmanned aerial vehicles) have been widely used in urban vertical wind environment testing, whereas less attention has been given to...