高强高性能混凝土配合比优化设计分析

现代工程施工中,高强高性能混凝土逐渐得到了广泛的应用和普及,它由于其自身的性质特殊性,在施工中可以起到良好的应用效果。而要获得与型钢混凝土组合结构相适应的高强高性能混凝土的最佳配合比,就需要对其配合比的优化设计进行科学的分析,通过对其各方面的影响因素的考虑,从实际的试验中确定其最小的配合比范围,以数学模型的引入来详细合理的分析研究,进一步的提高高强高性能混凝土的经济价值和应用价值。基于此,本文主要对高强高性能混凝土的配合比优化设计进行了简要的分析。     

梵吉雕塑园美术馆

本设计是为专门陈列意大利现代最著名具象派雕塑大师朱利亚诺·梵吉（Giuliano Vangi）作品的美术馆而做的园林设计。用地位于富士山麓广袤的丘陵地带,可俯瞰箱根的外轮山并远眺伊豆半岛的群山,自然风景明媚。     

稀土发光材料在印染加工中的应用研究

将具有余辉效应的稀土发光材料配制成添加剂,并按比例添加到染色和印花色浆中,对涤纶及苎麻织物分别进行了染色和印花实验,印染成品的得色深度和鲜艳度有明显提高;对添加剂及其在印染加工中的增深增艳机理进行了粗浅讨论。     

剩余活性污泥碱性发酵液用于厌氧交替好氧-缺氧序批式反应器生物除磷脱氮的碳源的研究(英文)

Activated sludge process has been widely used to remove phosphorus and nitrogen from wastewater. However, the nitrogen and phosphorus removal is sometimes unsatisfactory due to the low influent COD. Another problem with the activated sludge process is that large amount of waste activated sludge is produced, which needs further treatment. In this study, the waste activated sludge alkaline fermentation liquid was used as the main carbon source for phosphorus and nitrogen removal under anaerobic followed by alternating aerobic-anoxic conditions, and the results were compared with those using acetic acid as the carbon source. The use of alkaline fermentation liquid not only affected the transformations of phosphorus, nitrogen, intracellular polyhydroxyalkanoates and glycogen, but also led to higher removal efficiencies for phosphorus and nitrogen compared with acetic acid. It was observed that ammonium was completely removed with either alkaline fermentation liquid or acetic acid as the carbon source. However, the former resulted in higher removal efficiencies for phosphorus (95%) and nitrogen (82%), while the latter showed lower ones (87% and 74%, respectively). The presence of a large amount of propionic acid in the alkaline fermentation liquid was one possible reason for its higher phosphorus removal efficiency. Exogenous instead of endogenous denitrification was the main pathway for nitrogen removal with the alkaline fermentation liquid as the carbon source, which was responsible for its higher nitrogen removal efficiency. It seems that the alkaline fermentation liquid can replace acetic acid as the carbon source for phosphorus and nitrogen removal in anaerobic followed by alternating aerobic-anoxic sequencing batch reactor.     

浅谈毛织物品种(连载之六)

马裤呢(WHIPCORD或WHIP-CORDS,) 组织:急斜纹。马裤呢的组织图如图40所示。纤维:毛,毛和粘胶、涤纶、锦纶、腈纶等混纺。特点:马裤呢早精纺呢绒中比较厚重的品种,属于真呢类。常用急斜纹组织织造,     

水钢供水系统运行现状及发展规划浅析

针对水钢供水系统目前的运行情况，结合笔者的运行管理经验，全面地对水钢生活、生产用水现状进行分析，提出水钢供水系统存在的危机，按照公司可持续发展的计划，对水系统应增加及改扩建项目的可行性研究。     

多波勘探中一些物理负效应的野外补偿方法

ＰＳ转换波勘探采用纵波震源，具有采集成本低及劳动强度小的特点，在识别岩性、孔隙中的流体性质以及裂缝描述等方面发挥着日益重要的作用。但在实际多分量采集设计和施工中，或多或少忽略了ＰＳ波的传播特性、反射强度、波型转换、介质吸收以及检波器组合等因素的物理负效应，特别忽略了精细的采集设计和合理的采集参数所能带给资料上的细微变化对地质解释的贡献。归纳了导致Ｐ波和ＰＳ波的传播特性和造成地震成像差异的原因，给出了在野外采集中的补偿办法，并通过实例总结出以前勘探实践中忽略的因素，得出的结论对传统的Ｐ波勘探和转换波勘探都有着重要的借鉴作用。     

污水厂污泥中类二噁英类物质污染水平的研究进展

污水厂污泥的农业资源化利用是污泥处置的重要方法之一,但污泥中所含有毒有害的类二噁英类物质会制约污泥的农业利用.本文综述了污水厂污泥中类二口恶英类物质的污染水平和特点,为进一步制定和完善我国农用污泥中类二口恶英类物质控制标准提供科学的依据.     

阳离子荧光探针——咪唑鎓盐的大环四胺金属配合物的荧光性质研究

报道了一种含有大环四胺的咪唑鎓盐配体在吡啶/水为溶剂的条件下对Cu(II), Zn(II), Co(II)三种离子不同的荧光响应;在同种浓度下Cu2 配合物存在明显的荧光增强,Co2 、 Zn2 配合物存在较强的荧光翠灭,而Zn2 比Co2 荧光响应减弱得更多.     

VAV空调对风管系统施工的要求

本文针对VAV空调系统的原理及特性,并结合工程施工实践及教训,从VAV风管系统其中的四个主要组成部分,阐述了送风系统风管、变风量末端装置、回风管、风口在施工安装方面的特殊要求,目的是保证VAV系统顺利运行调试达到设计预期效果。