黄浦江松江段分时通航与建立多层次水上交通管理体系的设想

从建立多层次水上交通管理体系的角度出发,阐述黄浦江松江段实行分时通航制的可行性。     

Health externalities of ship air pollution at port – Piraeus port case study

This paper is employing the well-known methodology of impact pathway approach to assess the external costs in human health from ship air pollution at port areas. The passenger port of Piraeus, Greece is the scenery of the study. Piraeus port is in the vicinity of the greater Athens metropolitan area where almost half of the country’s population lives. Hence, this port is the central hub of the Greek coastal passenger ship system which connects the islands of the Aegean Sea with land and is characterized by heavy ship traffic. The case study presented in this paper assesses the annual external cost in human health from air emissions produced by all passenger ships and cruise ships calling the port of Piraeus. Health cost from ships at port has been estimated at both local (Athens metropolitan area) and regional level (entire territory of Greece). Results show that higher costs occur at the local level. The dominant pollutants creating this cost are particulate matter (PM_2.5, and PM₁₀). Overall, the results indicate that the health impact of Piraeus’s passenger port emissions is not negligible; however the cost of PM₁₀ is considerably lower than the corresponded cost deriving from the land based industries of the Athens regional area for which comparison has been available.     

公路路基填挖交界处不均匀沉降原因及防治

道路填挖交界处出现不均匀沉降,是一个需要加强管理的质量问题。采用水稳定性好的填筑材料和相应的加固措施,可减小不均匀沉降量,保证路基的稳定性,延长道路的使用期限。     

清“展海令”的实施与长崎唐馆设置的关系

在清代中国与江户日本的交往中,日本船只并不前往中国,惟有中国商船前往日本,且仅在长崎一地进行贸易,即便是中国的知识分子也知晓这一清代日中关系的基本形式。对于研究者来说,研究本国与外国的相互交往时,出访的使者们在彼国逗留期间的住宿问题也是了解各自国情应该关注的问题。正如我们所知,明清时期,访问中国的朝鲜使者与琉球使者是住在中国政府提供的驿馆之中的。与此相对的,在没有册封等外交关系、只有贸易往来的清代日中关系中,来航的中国商人们在贸易期间是怎样逗留在长崎的呢?本文将针对此问题进行论述。     

地下厂房岩壁梁混凝土施工工艺研究

岩壁梁作为一种新型结构,近年来在我国水电站地下厂房建设中获得广泛应用。而针对岩壁梁施工技术还未形成相应的理论体系,且岩壁梁混凝土施工部位结构复杂、质量控制严格、温控要求高,是地下厂房系统施工的重点和难点。本文以山东威海文登抽水蓄能电站为工程背景,对岩壁梁混凝土施工工艺进行研究,探讨并总结岩壁梁混凝土施工支架搭设、模板安装、混凝土浇筑及养护等重点工序的工艺措施,为类似工程提供参考。     

高职计算机基础教育的困境与对策研究

以培养学生具备一定计算机应用能力为主要目的的高职计算机基础教育目前存在有因学生计算机知识基础不同出现的教学效率低下,因目标不明确和缺乏与专业之间的必要沟通造成的理论知识偏多、针对性不强,因一定程度上的教学资源缺乏造成的教学改革举步维艰、教学方式相对单一.要突破计算机基础教育的困境需从明确教学目标、改革考核方式,实行分层...     

Analysis of chiral non-steroidal anti-inflammatory drugs flurbiprofen, ketoprofen and etodolac binding with HSA

The protein binding of non-steroidal anti-inflammatory drugs flurbiprofen, ketoprofen and etodolac with human serum albumin （HSA） was investigated using indirect chiral high performance liquid chromatography （HPLC） and ultrafiltration techniques. S-（-）-1-（1-naphthyl）- ethylamine （S-NEA） was utilized as chiral derivatization reagent and pre-column derivatization RP-HPLC method was established for the separation and assay of the three pairs of enantiomer. The method had good linear relationship over the investigated concentration range without interference. The average extraction efficiency was higher than 85% in different systems, and the intra-day and inter-day precisions were less than 15%. In serum albumin, the protein binding of etodolac enantiomers showed significant stereoselectivity that the affinity of S-enantiomer was stronger than R-enantiomer, and the stereoselectivity ratio reached 6.06; Flurbiprofen had only weak stereoselectivity in HSA, and ketoprofen had no stereoselectivity at all. Scatchard curves showed that all the three chiral drugs had two types of binding sites in HSA.     

明挖法地铁隧道箱涵平移施工方法

文章以某明挖法施工的浅埋地铁隧道箱涵平移工程为例,介绍了建筑整体平移技术在地下工程中的应用特点,以及平移系统布置和平移施工过程;并对箱涵基底摩擦力和平移推力进行了分析.工程实践表明,千斤顶分级平稳地进行顶推以及施工过程中的位移监测、反馈,是平移施工过程中的关键控制要素.     

论桥头跳车现象的分析与治理

公路是国民经济的重要命脉,从已投入使用的公路情况来看,路桥相接处不均匀沉降是常见的道路病害.主要分析引起跳车的主要原因,提出相应的预防与治理措施.     

桥头跳车的原因及防治措施

桥头跳车会给行驶车辆带来严重的危害.鉴于此,分析桥头跳车的成因并提出针对性的防治措施,可为相关施工提供参考.