对铁路罐车准装高度的几点看法及建议

对现行准装高度的确定方法进行了分析，并提出了改进建议。     

河口隧道破碎地层洞口段施工技术研究

针对河口隧道洞口段工程实际,借鉴国内外先进的施工经验,对破碎围岩的进洞施工方案进行了分析,以实例说明在破碎地层隧道洞口段如何确保施工安全和结构稳定。     

冻土爆破钻孔机械的选用

结合青藏铁路格拉段多年冻土爆破开挖的钻孔实践,介绍冻土爆破钻孔机械选择原则及不同孔径的钻孔试验情况.     

软土地质地铁车站盖挖顺作法施工实践及关键技术

介绍上海延吉中路地铁车站以顶板为路面系统的盖挖顺作法的结构设计、施工步序、土方开挖及支撑安装工艺等，提出了盖挖顺作法中立柱与围护结构差异沉降控制、快速施工等关键技术成功运用的对策。     

开展现代物流提升我国铁路物流运作效率

针对铁路物流的现状，分析了铁路向现代物流拓展的优势和条件，并提出了提升铁路物流运作效率的措施。     

津滨快速轨道交通土建工程项目风险管理

结合津滨快速轨道交通的土建工程建设,采用半定性半定量的方法对轨道交通土建工程中的风险进行了辨识、评价,并提出相应的控制措施。分析认为:在一定条件下各个工程环节均可能出现风险事故,但各个环节对应风险的程度不同;应重点考虑风险等级高的各环节,采取相应的风险对策。其方法及结论可为同类工程建设的风险管理提供参考。     

地铁安全风险管理工作的实施与评述

根据城市轨道交通安全风险的特点,从技术和管理角度,介绍北京地铁9号线施工准备期及施工阶段安全风险管理工作的实施情况;对相关工程经验进行总结与评述,提出新建地铁施工中进一步加强安全风险管理工作的建议。     

船体结构CAD技术研究

分析了国内外CAD技术在船体结构设计中应用和研究的现状,介绍了自主研发的基于面向对象的船体结构三维建模系统,描述了该系统的设计思想,对一些技术做了探索和研究.通过可视化界面,自顶向下地构造出船体不同类型的结构模型,智能化的系统满足了船体结构优化设计的需要.     

面向嵌入式系统的组态支撑技术

描述了嵌入式系统和组态的定义，介绍了嵌入式系统的构成，通用组态软件的构成和特点。接看对面向嵌入式系统的组态软件和本组态支撑软件进行了分析。并对各模块的功能和模块工作流程进行了详细的介绍。软件设计体现了数据与代码分离的特点，并且采用数据驱动的工作方式。     

Dynamics of inorganic nutrient species in the Bohai seawaters

Within the frame of a Sino-German Joint Research Program, two cruises of “R/V Dong Fang Hong 2” were carried out in September–October 1998 and April–May 1999, respectively, to understand the dynamics of nutrients in the Bohai. Nutrient species (NO₃⁻, NO₂⁻, NH₄⁺, PO₄³⁻ and SiO₃²⁻) are determined colorimetrically on board for five anchor and 30 grid stations. In situ incubation experiments are performed to determine planktonic nutrient uptake and benthic exchange flux. Nutrient concentrations display short-term variability and seasonal change in the Bohai, with higher levels in shallow coastal waters than in the Central Bohai. The influence of riverine discharge on nutrient levels can be seen from salinity isopleths, nutrient distribution and species ratios. Near-bottom (nb) waters have similar nutrient concentrations as to the surface waters in the Central Bohai, whereas stratification takes place in the Bohai Strait and North Yellow Sea. In situ incubation experiments provide evidence that the uptake ratio (i.e. N, P) by phytoplankton is proportional to the ratios among nutrient species in ambient waters. Based on the data of this study and previously publications, a preliminary estimate of nutrient budgets via riverine input and atmospheric deposition is established. The results indicate that atmospheric deposition gains importance over rivers in delivering nutrients into the Bohai and sustain the new production, following recent decrease in riverine inflow caused by drought periods in North China and damming practices. A historical review of nutrient data indicates that concentrations of nitrogen increase and phosphorus and silica decrease in the Central Bohai over last 40 years. This potentially has an important influence on the health of ecosystem in Bohai (e.g. food web and community structure), though further study is needed to examine the scenario in more detail.