高压加热器到除氧器疏水管道振动治理

通过对电厂125 MW机组高压加热器到除氧器疏水管道振动原因的分析,提出了解决安装有自动水位控制器的高压加热器疏水管道振动的治理方案,并对高压加热器疏水管道实施优化和改进,治理后管道振动显著降低,取得了良好效果.     

扰流色谱的研究：利用扰流色谱测定气体扩散系数

本文分别用返流色谱法和Ｒ（Ｆ）峰法测定了不同温度下有机气体乙烯、丙烯、乙炔在氮气流中的扩散系数和苯、环已烷、乙醇、乙酸乙酯等有机蒸气的扩散系数，讨论了各种操作参量对测量精度的影响，大量测量结果表明，返流色谱法的平均偏差为３．３２％，而Ｒ（Ｆ）峰法为４．４９％。     

网络O-D矩阵估计的两阶段交叉口回归分析方法

通过分析交通网络O-D矩阵估计与交叉口O-D矩阵估计问题的关系，获得从网络到交叉口O-D矩阵估计问题的转换条件，由此构建网络O-D矩阵估计的两阶段交叉口回归分析方法。该方法首先求解“叉点具有产生、消失流量的交叉口O-D矩阵估计问题”分离起讫点的通过流、产生流和消失流，然后根据网络构造交叉口，并求解“叉点无产生、消失流量的交叉口O-D矩阵估计问题”获得需要估计的网络O-D矩阵。该方法以路段观测交通流量为基础进行估计，无须进行交通分配等辅助手段。计算分析表明，该方法能获得较为满意的估计结果。     

污水泵站进水流态的分析及其改进

根据上海市污水治理二期工程SA泵站水力模型试验,分析城市污水泵站前池普遍存在的不良进水流态现象及其对水泵性能的影响,提出前池流态改善措施．试验表明,改进后的前池使流态得到明显改善,水泵机组效率明显提高,并可有数降低泥沙淤积．     

Antiviral activities of extracts from Hong Kong seaweeds

We extracted six Hong Kong brown seaweed species with hot water for their antiviral properties. The cytotoxicity and antiviral activity of these extracts were tested by MTT [3-（4,5-dimethylthiazol-2-yl）-2,5-diphenlytetrezolium bromide] method, cytopathic effect reduction assay, and plaque reduction assay. The antiviral effect was further determined by flow cytometric analysis. The results showed that most of these extracts inhibited the propagation of herpes simplex virus types 1 and 2 （HSV-1 and HSV-2） standard strains with very low cytotoxicity to the host cells. The extracts ofHydroclathrus clathratus and Lobophora variegata showed more potential anti-HSV activities than the extracts of the other four seaweeds. They also had moderate antirespiratory syncytial virus （RSV） activities but could not inhibit influenza A virus. Hydroclathrus clathratus was further extracted by diluted acid and alkali and the antiviral effects of the extracts were also detected. The result showed that the hot water extract contained the main carbohydrate components that exhibited the antiviral activities against various strains of HSV, including the acyclovir-resistant strain. HI-3, a compound fractionated from this hot water extract, showed a dose-dependent anti-HSV activity in flow cytometric analysis and plaque reduction assay.     

The mechanism of flow softening in subtransus hot working of two-phase titanium alloy with equiaxed structure

Understanding the mechanism of high temperature deformation is important for controlling the forming quality of the titanium alloy forgings. In the present work, the flow softening mechanism in subtransus deformation of titanium alloys with equiaxed structure was investigated by interrupted isothermal compression tests. The results show that limited strain hardening followed by continuous flow softening occurs in high temperature deformation of a twophase TA15 titanium alloy. The flow softening can not be rationalized by dynamic recrystallization. Instead, the increase of mobile dislocations during deformation is an important reason for flow softening. The grain boundaries （including the α-β interfaces） act as an important source for the generation of mobile dislocations. The continuous flow softening results from the significant deformation heterogeneity in subtransus working.     

大断面合金钢连铸坯洁净度的研究与控制

本文主要是针对45#、40Cr、20CrMnTiH等钢种大断面铸坯夹杂问题导致了在轧制Φ120圆钢时出现低倍夹杂以及顶锻裂纹缺陷提出的,为此我们从连铸设备、保护渣、保护浇注等方面进行了分析,采取了相关的措施,取得了良好的效果。     

论系统学“秩边流模型”

通过研究系统科学模型情况,提出＂秩边流模型＂作为系统学进行理论提炼的平台,旨在确立系统学基础模型,以期推动系统学发展。     

喷射技术研究及其发展空间展望

喷射技术是一门覆盖面大，应用范围广的高科技新兴学科。本文对喷射技术国内外概况进行了综述，介绍作者在这一领域的研究成果，并提出拓宽喷射技术发展空间的措施。     

流量可调燃气发生器压力闭环模糊控制算法

为了改进流量可调燃气发生器的调节精度,引入燃气发生器压力闭环控制,针对流量可调燃气发生器压力闭环控制特点,在压力闭环中引入了模糊积分控制,此控制算法响应速度快,超调量较小,不同工况及长时间工作下系统仍然有较好的动态特性。 