高效广谱微生物复合破乳剂的制备及其应用

为解决破乳剂的选择性强、破乳效率低的问题,采用化学破乳剂和微生物破乳剂复合的方法,研制出了广谱、高效、低成本的破乳剂,并用大庆三次采油采出液、塔河原油、南阳原油、蓬莱原油、俄罗斯混合原油进行了脱水、脱盐评价。结果表明:对于大庆油田采出液,微生物复合与化学破乳剂比较,脱水效率提高5%以上,脱出水含油可降低40%以上;对于易乳化的南阳原油、蓬莱原油,脱后含盐可达3 mg/L以下,脱出水含油可降低50%以上。工业应用表明:对于俄罗斯混合原油脱后含盐可达2 mg/L以下,脱出水含油可降低70%以上,脱后排水含油小于15 mg/L。所研制的微生物复合破乳剂适应性强,成本可降低20%~50%。     

“LOGO”在塑料机械中的应用

把可编程控制器“PLC”中“LOGO”集成块应用于塑料机械中,把可编程序输入到“LOGO”,来表达电器线路对塑料制品的记数和裁刀部分进行自动控制。     

A fundamental study on the control of the HCCI combustion and emissions by fuel design concept combined with controllable EGR. Part 1. The basic characteristics of HCCI combustion

This article investigates the basic combustion parameters including start of the ignition timing, burn duration, cycle-to-cycle variation, and carbon monoxide (CO), unburned hydrocarbon (UHC), and nitric oxide (NO_x) emissions of homogeneous charge compression ignition (HCCI) engines fueled with primary reference fuels (PRFs) and their mixtures. Two primary reference fuels, n-heptane and iso-octane, and their blends with RON25, RON50, RON75, and RON90 were evaluated. The experimental results show that, in the first-stage combustion, the start of ignition retards, the maximum heat release rate decreases, and the pressure rising and the temperature rising during the first-stage combustion decrease with the increase of the research octane number (RON). Furthermore, the cumulative heat release in the first-stage combustion is strongly dependent on the concentration of n-heptane in the mixture. The start of ignition of the second-stage combustion is linear with the start of ignition of the first-stage. The combustion duration of the second-stage combustion decreases with the increase of the equivalence ration and the decrease of the octane number. The cycle-to-cycle variation improved with the decrease of the octane number.     

Mass transport effects on the electrodeposition of iron-nickel alloys at the presence of additives

Iron-nickel (Fe-Ni) plating bath solution chemistry was studied by determining the Fe-Ni equilibrium concentrations at various pH levels. It was found that the alloy composition is determined by solution equilibria, mass transfer of the electroactive species within the diffusion layer and by the surface coverage of the additives on the electrode. The effect of the rotation speed of the disc electrode and the presence of organic additives on the deposition of Fe-Ni alloys are evaluated. Boric acid increases the absolute iron deposition rate, while it inhibits the rate of nickel reduction. Saccharin and ethylene diamine influence the metal deposition rate but are not as effective as boric acid.     

Electrically conductive composite of polypyrrole and liquid crystalline copoly(ester-amide)s

The modification of the mechanical properties of polypyrrole (PPY) by electrochemical preparation of conductive composite film from pyrrole (PY) and three kinds of liquid crystalline copoly(ester-amide)—PEA(H), PEA(C), PEA(O)—are presented. The electrical conductivity of the PEA(H)/PPY, PEA(C)/PPY, and PEA(O)/PPY composites are the same order of magnitude as PPY. The mechanical properties of the composite films are much better than that of pure PPY, and the composite films have good conductivity and thermostability. © 1994 John Wiley & Sons, Inc.     

热塑性硬质聚氨酯泡沫在汽车顶内饰中的应用

概述了汽车顶内饰用热塑性聚氨酯硬质泡沫塑料进展状况，介绍了硬泡及顶内饰成型方法，对影响该硬泡性能的一些因素进行了讨论。指出该顶内饰已批量生产。     

某综合楼深基坑信息化施工

开挖深度达 17m的深基坑施工中采用深基坑信息化施工技术进行安全监测。现场监测在确保基坑支护结构及邻近建筑的安全同时根据监测所提供的信息 ,及时组织了基坑抢险 ,保证基坑开挖工作顺利完成。     

基于GIS电子地图制定输电巡视计划的研究

输电巡视计划是输电线路开展日常巡维工作必不可少的部分。如何实现快速、便捷地制定巡视计划,提升巡视计划开展的实效性,已成为输电线路运维管理工作的迫切要求。文章从输电线路周边环境的特点出发,在对其真实环境的复杂程度进行分析的基础上,结合当前主流的地理信息技术,提出了基于GIS电子地图制定输电巡视计划的设计方案,并详细阐述了该方案的实现模式和实际应用成效。     

“2016·7”清江流域洪水调度方案分析

2016年7月,清江流域发生了特大洪水,湖北省防汛抗旱指挥部认真研究、贯彻、落实防洪决策部署,把保障人民群众生命财产安全放在首位,反应迅速、调度灵活。经过对汛情进行研究分析,制定出了相应的措施,即采取预泄腾库迎洪、汛中错峰拦洪、汛末适时收水等,取得了清江特大洪水防御的阶段性胜利。对"2016·7"清江洪水调度方案及措施的制定、落实情况进行了总结分析,可为今后清江流域防洪调度工作提供借鉴与参考。     

靶向壳聚糖基因载体与水溶性量子点的自组装

将透明质酸(HA)接枝到四种不同分子量的壳聚糖(CS)上,获得了靶向壳聚糖基因载体。将CS及接枝CS分别与水溶性量子点(QDs)自组装,研究发现,相对于纯QDs,CS/QDs复合物及接枝CS/QDs复合物的荧光强度均明显增强,荧光发射峰位发生红移。复合物呈核/壳结构,QDs被包裹在核内。和CS/QDs复合物相比,接枝CS/QDs复合物的尺寸更小,分布更为均一。