改进的深度脱木素的硫酸盐蒸煮：第一部分 用硫化钠预处理的桉树硫酸盐蒸煮

用硫化钠水溶液预处理桉树，接着进行改进的深度脱木素硫酸盐蒸煮。结果表明，在１６０℃预处理后脱木素的选择性较常规硫酸盐蒸煮有显著提高，可得到低Ｋａｐｐａ值（约为１０）的浆而没有明显的强度损失。     

热钾碱法脱碳的缓蚀及钒化工艺技术改进的试验研究

介绍了热钾碱法脱碳钒化工艺技术改进的试验过程，开发了原始开车钒化，在一定条件下取消钒含量控制，实现了运行中不加钒、中修后开车不钒化的新工艺技术。本技术已通过化工部鉴定，处于国内领先水平，并具有可观的经济效益。     

Natural zeolite utilisation in pollution control: A review of applications to metals' effluents

This paper assesses the potential of natural zeolite utilization as a low-cost ion-exchange and sorbent material in pollution control and recovery of metals. The improvement of the purity of natural zeolites coupled with their chemical modification capabilities in order to provide specific properties may provide a cost-effective alternative for the treatment of heavy metal contaminated soil and water. The application of natural zeolites in industrial pollution control is becoming important and the level of technical effort is increasingly expanding. The extent of application is unlikely to be related solely to their low cost, but also to improved properties and performance characteristics, which will advance the practical implementation of natural zeolites' technology.     

脱苯工艺的节能改造

焦化厂富油脱苯工艺中，管式炉法较蒸汽法节能。本溪钢铁公司焦化厂产焦１８０万ｔ／ａ的装置，其富油脱苯工艺由蒸汽法改为管式炉法后，每年可节煤７０００ｔ。     

Modified oil agglomeration process for coal beneficiation. III. Grinding and agglomeration using different szego mill designs

The simultaneous grinding/agglormeration process has been used to beneficiate Minto coal. Experiments with the Szego Mill, a planetary ring-roller mill with grooved rollers, have given good results. Different roller ridge/groove sizes have been tested and favourable oil-coal-water ratios established. Ash removal is closely related to grinding performance. Very short mill residence times, of the order of 10 seconds, are sufficient for microagglomerate formation. Considerable equipment and operating cost savings are possible with the modified process.     

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本文简要介绍了国外在开发超酸性气体过程中遇到的材料选择、腐蚀监测、水化物堵塞、超酸性气的处理和加工等问题所采取的措施和办法。     

聚苯硫醚酰胺的合成与表征

用4-氯苯甲酰4′-氯苯胺和硫化钠为原料在常压下合成了聚苯硫醚酰胺,并对其进行了表征。结果表明所合成的产物为结晶性聚合物,并且有较高的热稳定性。     

'PURIFYING' NOISY SIGNALS

Abstract. A method is presented for obtaining the set of all possible pure origins of a given noisy ARMA(2,2) signal. By a transformation to a new set of variables the locus of this set becomes a straight line.     

硫化钠在黑白钨加温精选中的应用研究

介绍了柿竹园黑白钨混合粗精矿加温精选中 ,添加硫化钠与水玻璃混合剂比单一添加水玻璃能更有效地使白钨矿与萤石等含钙矿物及脉石矿物分离。论述了硫化钠在加温精选中的作用效果并探讨了其作用机理     

A survey of models and algorithms for winter road maintenance. Part IV: Vehicle routing and fleet sizing for plowing and snow disposal

This is the last part of a four-part survey of optimization models and solution algorithms for winter road maintenance planning. The two first parts of the survey address system design problems for winter road maintenance. The third part concentrates mainly on vehicle routing problems for spreading operations. The aim of this paper is to provide a comprehensive survey of optimization models and solution methodologies for the routing of vehicles for plowing and snow disposal operations. We also review models for the fleet sizing and fleet replacement problems.