提高东海大桥混凝土结构耐久性的措施

东海大桥是我国较为罕见的大型海洋工程。影响东海大桥结构混凝土耐久性的首要因素是Cl-在混凝土中的渗透性。针对这一情况,并考虑当地实际,提出采取高性能混凝土技术为核心的综合耐久性策略,及满足现阶段工程实际和技术水平的施工措施和质量保证措施,确保了高性能混凝土质量符合耐久性设计要求。     

基于输入(需求)的动态统计及组合查询系统设计

提出了一种基于输入（需求）的动态统计及组合查询系统的设计方法。此设计能满足用户动态增加统计的需求，使系统的灵活性大大加强，达到了自适应用户需求变化的效果，节省了开发成本和后续的维护成本。     

350 t落下孔车

介绍了350 t落下孔车的用途、主要技术参数、结构、分析计算、试验和运用情况等。     

改进的质量功能展开法在舰船装备研制技术风险分析中的应用

分析改进的质量功能展开方法中将顾客要求转换技术要求的要点,建立改进的质量功能展开法应用于风险分析的步骤,结合常规潜艇技术风险分析评估算例,说明该方法为大型复杂装备研制技术风险分析提供了有效的途径。。     

港口计算机监控系统的架构与功能

介绍CMS的构成、数据采集和传输方式,分析CMS的功能要求.一个功能完备的CMS系统至少应具备实时动态画面监控、故障诊断与排除、在线编程、实时趋势和历史趋势、数据库、统计报表、Web浏览等功能.     

NX17B型共用车

阐述了NX17B型共用车的用途、技术参数、结构、性能特点,并介绍了其试验、运用等情况。     

Estimates of Southern Ocean primary production—constraints from predator carbon demand and nutrient drawdown

In view of the wide range of estimates for the total primary production for the Southern Ocean south of the Subantarctic Front—current estimates range from 1.2 to 3.5 Gtonne C year⁻¹—we have examined two indirect methods for assessing primary production. First, we have estimated the primary production needed to sustain the carbon requirements of the endotherm top predators in the ecosystem. Estimation of the carbon requirements for crabeater seals of about 7 Mtonne C year⁻¹ is extrapolated to a value for all endotherm predators of 15–30 Mtonne C year⁻¹. Current data indicate that 70–80% of the diet of this suite of predators is zooplankton (predominantly the euphausiid krill), making for highly efficient transfer from primary production to top predators. Our best estimate of Southern Ocean primary production by this method is of the order of 1.7 Gtonne C year⁻¹, or an averaged areal primary production of about 30–40 g C m⁻² year⁻¹. Our second approach is to estimate primary production from the drawdown of inorganic nutrients, based on the limited suite of studies from which an annual nutrient deficit can be calculated. Again, this indicates annual primary production of the order of 1.5 Gtonne. Although both methods have inherent uncertainties, taken together they provide a relatively robust constraint on annual primary production. For both methods to underestimate primary production by the 1–1.5 Gtonne C implied by the higher current estimates, carbon export from the Southern Ocean pelagic ecosystem would need to be much higher than is normally found in other oceans.     

用隧洞工程优化南水北调中线方案

介绍了南水北调优化方案，对方案的实施期限、工程造价、优越性及可行性进行了分析。     

新型油压减振器的研制

介绍的新型油压减振器的主要技术参数，作用原理和结构特点，分析了油压减振器的阻尼特性与阻尼系数的关系，并简介了油压减振器应采用的新的试验方法。     

我国高速铁路轮轨系统尚应深入研究的几个技术问题

高速铁路轮轨系统技术是确保列车高速行驶安全的关键。轮轨系统技术条件的影响因素 ;最高行车速度、运输组织、机车车辆和线路结构等重大问题应深入研究。本文结合日、德等国高速铁路情况 ,提出设计运营工作中存在的问题 ,可供立题研究。