计量校准实验室的质量管理及应用

计量校准实验室的质量管理的依据方法及其应用,以及如何参与市场竞争。     

SYNTHESIS AND CHARACTERIZATION OF THE LAMELLAR MICROCRYSTALLINE ZINC PHOSPHATE α-Zn_3(PO_4)_2·4H_2O

It's well knownthat redlead and zinc chromateare extensively used as anticorrosive pigment in thefor mulation of protective paints due totheir anticor-rosive efficiency.However,their applications havebeen gradually discouraged since1990because theyare hazardous and high toxic.Among several non-toxic anticorrosive pigments developed so far,zincphosphate is a desired alternative to the toxic pig-ments for its superior perfor mance.Unfortunately,zinc phosphate still cannot completelyreplacelead o…     

关于船舶压载水管理的介绍

本文介绍了国际海事组织关于船舶压载水管理的有关要求和在设计中一般可以采用的置换压载水的方法，供参考。     

客运专线最大坡度研究

为满足我国客运专线建设需要,结合我国客运专线路网规划及在建项目研究,主要从工程技术经济及电动车组性能与坡度适应关系两方面,分析研究高速客运专线最大坡度标准的选用原则,提出适合我国国情并与国际高速铁路标准相适应的最大坡度标准。根据电动车组在不同坡度的坡段长度上模拟运行末速度分析提出最大坡度与坡段长度的匹配原则。     

国内外上市公司股权结构比较

文章从股权结构的含义出发,通过对西方成熟证券市场上市公司股权结构的特点进行对比分析,找出我国上市公司股权结构的特征和存在的问题,以期对我国上市公司股权结构的优化有所启示,并促进我国证券市场的健康发展。     

如何满足在华跨国公司的物流需求

中国加入WTO之后，进出口贸易额越来越大，同时海外企业在华投资也越来越多，向国内的物流业提出了强劲的需求。各行业跨国公司在中国投资，盛行“贴牌制造”(OEM)，对第三方物流的服务需求日益强烈，如何更好地满足跨国公司未来的物流需求，已成为目前国内以物流服     

马克思主义国家学说及其发展

本文拟从马克思主义创始人对国家的起源、演变、本质和职能所进行的系统分析,对国家的相关问题做一些有益的探索。     

企业战略性采购及其实施策略研究

提出了在常规采购管理中存在的三大问题,然后又通过比较从成本、整体观念、合作期限、关注层面等七个方面提出常规采购管理和战略采购管理的比较分析,最后提出了实施战略采购管理的四大对策。     

Assessment of alternative ventilation schemes at public transport interchange

The provision of mechanical ventilation in a semi-confined public transport interchange is mandatory in Hong Kong. The authority recommends the general use of low-level-supply and high-level-exhaust airflow schemes that different from the traditional ventilation concept in that low-level emitted vehicle pollutants are best removed at source. Analyses of air quality at typical public transport interchange environments are conducted for the two airflow schemes. The CFD simulations are generalized by studying light and heavy traffic conditions with adjusted ventilation rates to match the change in vehicle emission levels to examine pollutant concentrations at passenger waiting areas and the elevated footbridges. While the conventional high-level-supply and low-level-exhaust scheme could perform better during light traffic loads, the difference diminishes with increased traffic loads during peak hours. On the other hand, the high-level exhaust scheme has an advantage of serving as a smoke extraction system during a fire outbreak.     

行政执法中的博弈

运用博弈论最简单的模型,把行政执法分为被管理者之间的博弈、管理者之间的博弈和被管理者与管理者之间的博弈三方面来进行分析,为实现有效执法提供一种简单而有效的思路和方法。