浅谈工程造价控制

介绍了控制工程造价的手段及工程造价控制的重要环节。     

分子质量调节剂对丙烯酸酯乳液压敏胶性能的影响

采用预乳化半连续聚合法,合成了丙烯酸酯乳液压敏胶。探讨了叔十二烷基硫醇、2,4-二苯基-4-甲基-1-戊烯、乙二醇以及异丙醇等分子质量调节剂对压敏胶聚合稳定性、黏度、初粘性、持粘性和180o剥离强度的影响。结果表明,叔十二烷基硫醇和异丙醇对压敏胶的性能影响较大,2,4-二苯基-4-甲基-1-戊烯和乙二醇的影响较小;随分子质量调节剂用量增大,压敏胶的初粘性增大,持粘性和180o剥离强度先增大后降低,黏度先降低后又增大;加入2,4-二苯基-4-甲基-1-戊烯和异丙醇的乳液压敏胶聚合稳定性随分子质量调节剂用量增大而变差,加入叔十二硫醇的乳液压敏胶的聚合稳定性则随用量增大先变差后又增强,而乙二醇则与之相反。     

水性免中涂工艺的色漆一遍成膜的技术研究

主要分析研究了水性免中涂工艺采用色漆一遍成膜工艺后涂膜的外观质量及颜色等方面的变化情况,以及相关调整措施和建议。     

Coat of Arctic Fox (Alopex lagopus L.) of Different Genetic Groups in Micro- and Macroscopic Studies and in DSC Investigations

The objective of this research project was to compare in different genetic groups of arctic foxes the composition of the coat, hair length, and thickness as well as the medulla of four hair types but, primarily, to investigate the hair of the two layers of the coat hair (the underhair and the overcoat) using, for this purpose, the differential scanning calorimetry (DSC) method. Generally speaking, Finnish foxes were characterized by the most favorable indices of these traits. Different proportions of genes exerted a different impact on the level of these traits.     

高渗透乳化沥青技术的实践与认识

对国内应用高渗透乳化沥青技术进行简单分析,介绍了RPS-2型高渗透性乳化沥青的开发与应用,提出国内应用高渗透乳化沥青技术存在的一些值得探讨的问题.     

远红外定向加热器导电涂层的研制

从四个方面研究了远红外定向加热器的导电涂层，使加热器的节约能源、提高热效率方面获得了显著效果。     

浅谈津汕高速公路下封层施工

结合津汕高速下封层施工，对单层式层铺法沥青表面处治方法施．T_-X-艺进行了研究，介绍了智能型沥青撒布设备、石屑撒布设备使用情况，对同类道路工程具有一定指导意义。     

Effect of seed coat fragments on cotton yarn structure: impact of fragment size,attached fibres and position within yarn core

Seed coat fragments are a major source of cotton yarn imperfections. This article discusses the factors influencing the disruption caused by seed coat fragments in ring-spun yarn structure with a focus on three characteristics: the fragment's size, the amount of fibres attached to it and its position relative to the yarn core. The three characteristics were investigated through two experiments involving various types of yarn defects and a range of ring-spun yarn counts. Results presented in this article indicate that the three factors considered have a significant influence on the intensity of the disruption the seed coat fragment causes in the yarn structure, and are determinant of the type of defect that this disruption engenders (short/long defect).     

螺旋轴喷焊修复工艺和材料的研究

在造纸亚铵连蒸设备螺旋轴表面喷焊一层耐磨涂层,可使螺旋轴寿命提高10倍以上。本文研究了这种耐磨涂层的组成、喷焊工艺及其耐磨机理。     

Roasting effects on the distribution of tocopherols and phospholipids within each structural part and section of soybeans

To clarify the effects of microwave roasting on the distribution of tocopherols and FA of phospholipids within soybeans, whole soybeans (Glycine max) were treated by microwave and further evaluted as compared to a raw sample. Tocopherol homologs, measured using HPLC, and phospholipid profiles, quantified with GC, were determined in the seed coat, the embryonic axis, and selections of cotyledons separated from three cultivars. The tocopherols were predominantly detected in the axis, followed by the cotyledons, and then very little in the coat. As much as 25% of the individual tocopherols originally present in the coat were lost at 12 min of roasting, whereas <25% was lost in the cotyledons and the axis after 20 min of roasting. The greatest rate of phospholipid loss (P<0.05) was observed in PE, followed by PC and PI, and their changing patterns were more pronounced in the coat than in the cotyledons or the axis. Thus, tocopherol content and phospholipid profiles change with microwave roasting according to tissue.