控制沥青路面平整度的几项措施

从基层平整度的控制、热拌沥青混合料质量的控制、路面施工工艺的控制以及接缝处理的控制等几个方面分析总结出对沥青混凝土路面平整度的彩响因素,并提出相应的控制措施。     

浅淡沥青路面抗滑性能与路面强度

分析了影响沥青面抗滑性能的因素。提出了改善沥青路面抗滑性能的措施。     

浅谈港口设施防雷浅析

雷击事件可能造成人身伤害和财产损失。在港口做好防雷工作事关重大。阐述了雷电的形成及危害,分析了港口设施防雷所涉及的领域,介绍了港口设施防雷的分类和“滚球法”,强调了对防雷装置的检测。对港口防雷工作有一定启示。     

浅谈钢筋混凝土现浇箱梁温度与收缩裂缝的产生与控制

本文主要对广州市东山口立交及茂生围高架钢筋混凝土现浇箱梁裂缝产生的原因进行分析并提出控制收缩裂缝开展的施工措施。     

四川小净距隧道的发展与技术要点总结

文章详细介绍了四川公路小净距隧道的发展过程、现状与方向,同时根据现阶段的研究成果与工程经验对小净距隧道的技术要点进行了总结,提出了小净距隧道结构支护参数加强方法、中岩墙加固方法、施工控制措施、监控量测措施.     

内河码头项目水土保持方案编制特点初探

文章结合广西区内河流水文特征及内河码头项目施工工艺,从项目的水土流失特点、水土保持措施布设、水土保持监测和效益分析等方面着手,以柳州港鹧鸪江作业区6#～9#泊位工程及崇左港中心港濑湍作业区为例,探讨了内河码头项目水土保持方案编制特点。     

公路桥梁施工期间环境保护注意环节及措施

公路桥梁施工期间,对环境会造成局部污染,针对桥梁施工提出在环保方面应注意的环节,并对可能造成环境污染的环节积极采取相应的环境保护措施,从而促进桥梁的环保施工。     

鲤鱼山水道6 m水深航道治理措施

为满足"十三五"期武汉至安庆6 m水深航道建设要求,开展多因素限制下武安段鲤鱼山水道6 m水深航道治理措施研究。通过该水道近期6 m水深航道条件分析,明晰河段6 m水深下航道的问题,并探讨浅滩治理思路,提出单纯技术因素下河段治理思路和措施;针对单纯技术因素下工程措施与鲤鱼山水道众多涉水建筑物存在矛盾的问题,通过模型试验提出多限制条件下鲤鱼山水道6 m水深航道治理措施。     

Greenhouse gas emissions associated with electric vehicle charging: The impact of electricity generation mix in a developing country

Since 2012, the government has been promoting the electric vehicles and the development of related infrastructure to encourage local automakers to explore into the alternatively powered vehicles. However, the benefits of grid-dependent EVs can only be harvested under the condition that their use is coupled with a low carbon electricity grid. Thus, it is an additional challenge for Malaysia's that are largely dependent on fossil fuels for electricity generation. The object of this paper is to perform a well-to-wheel life cycle assessment for calculating the greenhouse gas emissions attributable to the usage of ICEVs, HEVs and EVs in Malaysian scenario. These emission calculations will provide the best information for policymakers, researchers, and investors to make appropriate and effective decisions on policies, research and investments in future transport energy. The results show that running EVs with national grid will produce an average of 7% more GHG emissions than HEVs at the same distance. However, they will produce an average of 19% less GHG emissions than the ICEVs. Overall the GHG emissions produced through the usage of EVs are substantial based on the well-to-wheel analysis, as the environmental profile of EVs is linked with the national grid. Therefore, in order to harvest the benefit of EVs towards climate change and global warming mitigation, massive modernization and transformation should be taken for the development of the national grid towards greener sources.     

Global Fish Trade,Prices, and Food Security in an African Coral Reef Fishery

This study evaluated the potential impact of global fish trade on local food prices by analyzing a 16-year locally collected time series of disaggregated coral reef fish products and prices that differed in their market chain linkages—ranging from local to international markets. We were primarily interested in evaluating how local and global markets interacted with the local prices of beef, fish, and maize. There was no cointegration between the prices of exported octopus and that of maize and beef over this study period. Further, the three types of fish and associated markets responded in different ways to various price changes. For internationally traded octopus, we found a positive association between price and catch rates but no evidence that the global trade in octopus markets created local inflation, particularly the prices of the fish eaten by the poor. In general, there was no evidence for price transmission from export to nonexport fish products even though fishers appeared to focus on octopus when prices were high. Consequently, fishers' behaviors and trade policies that promote adjusting fishing effort to internationally traded fish did not appear to promote poverty or food insecurity in this fishery.